REVIEW

VOL. CXXXIX. NOVEMBER 8, 1946 NO. 3598

^HOW IT IS DONE

‘ Laying-up ' machines fitted with special devices to ensure that the pre-twisted cores of Aberdare Cable are correctly set into place to give Uniformity of construction and finish. Just one of .he many processes in which the application of really up-to-date methods ensures the consistently high quality and reasonable price of Aberdare Cables.

aberdare cables ltd., nineteen w oburn place, London, w . c . l . Tel: Term inus 2777

Works: aberdare, Glamorgan, south wales • ’Phone : Aberdare 416 Specialists in paper-insulated cable for power purposes up to and including 33,000 volts Manufacturers also of P.B.J. cables. Copper Wire and Strand

NIHEPENCE WEEKLY ( Electrical Review November 8, ^

Electric Infra-Red is successfully used for drying:— PAINT • RAW COTTON • CHEMICALS POWDERS • HOSIERY • LETTER- HEADINGS, etc. • BALSA WOOD PLASTICS • BOOTS & SHOES (dyes and pyroxlin cements).

(Photograph by courtesy of BETTS AND COMPANY LIMITED. LONDON.)

METROPOLITAN-VICKERS ELECTRICAL CO. LTD.-NUMBER ONE KINGSWAV • LONDON • W.C.?

SI/402 BlfiJOTEKA^ E l e c t r ic a l R e v ie w W ovgyfafofa ¡ 5 ^ 6

¿ea* ¿h d ettf fi£l# *cf^*+y ¿ y e J ?

This automatically-controlled HEATRAE Electric Water Heater is indeed a boon to us housewives. Just the type w e’ve always wanted, providing instant hot water when required.

Although men won’t acknowledge it, they A R E impatient, but my'husband cannot speak too highly of Heatrae for its instancy at all times.

leaders in electric water heaters

HEATRAE LTD., NORWICH GRAMS : HEATRAE, NORWICH PHONE : NORWICH 2513

W E MAKE THE "FACILE’’ ELECTRIC WELDING MACHINES TERMINAL SPOT, SEAM Send for Prices and List of all AND BUTT k i n d s of WELDERS Terminals 35 years’ experience ROSS COURTNEY \ $ S ; Automatic or Non- ASHBROOK ROAD, LONDON, N.I9 A u t o m a t ic With or without Electric Control

The quickest and most economical method of W elding Oil Drums, Bars 11 kVA Spot Welder TJrj.. to the spec­ ific require­ ments of our The WESTMINSTER ENG. Co. Ltd customers Victoria Road, Willesden Junction, N.W. 10 Makers of all types of repe­ Dynamos, Motors, Alternators and tition products from the bar in Transformers Rewound and Re-constructed. all metals “ Westminster ” Brush Holders. Process Arc Lamps. T elephone ; T elegrams ; M‘CLand REPETITION UP Elgar 7372 (2 lines) “ Regency, Phone, London.” POOL LANE • LANGLEY BIRMINGHAM 2 E l e c t r ic a l R e v ie w N ovem b er 8, ^

LINCOLN CATHEDRAL The building was begun in 1074 by Remigium, the first Norman Bishop. St. Hugh, the Carthusian monk, was consecrated Bishop in 1186

CRYSE

MADE IN ENGLAND

f i f t y y e a r s o f QUALITY & SERVICE . ^ M l a n d i e é

BIRMINGHAM BURY ST EDMUNDS LEEDS LONDON BRIGHTON CARDIFF LEICESTER MANCHESTER BRISTOL GLASGOW LIVERPOOL NEW CASTLE

C R Y SELC O LIMITED, K E M P S T O N WORKS, B E D F Q r d N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 3

THE SMALLEST TRIPLE POLE SWITCHFUSE EMINENTLY SUITABLE FOR MACHINE TOOLS (ffpRflDETTE. IOAMPERES. 5 0 0 VOLTS. CATALOGUE N °Q l438

BILL SWITCHGEAR LTD LONDON A.WZELLEV ASTON LANE, PERRY BARR 73 GT PETER ST , BIRMINGHAM-20 WESTMINSTER S.W.I.

PHONE'BIRCHFIELK 501! c r a m s: b i LSwrrcH bh a m

CO m FORT

Every home is awaiting electrical appliances that embody the latest achievements of our time. Thermostatic Control is an advancement that ensures economic running combined with comfort conditions

Your Product will benefit by the addition of an automatic control made to suit. Bear us in mind for your future production programme— we “ design for comfort.” THE BRITISH THERMOSTAT Co. Ltd. SUNBURY-ON-THAMES,MIDDX. Phone: Sunbury on Thames456 E l e c t r ic a l R e v ie w November 8, 1946

Maximum quality together with low maintenance cost, combineto make the name of Premier Fine- Quality outstanding in the world of electrical heating appliances. Present conditions limit supplies but distribution is being carried out as fairly as possible.

PREMIER ELECTRIC

FIRES

PREMIER ELECTRIC

HEATERS LIMITED BIRMINGHAM • 9

Rpl26ID N ovem b er 8, 1946 E lectrical Review FRACTIONAL HORSEPOWER MOTORS

The most popular in the country

Spigoted on Plain Endshields fon direct mounting on the machine

Vertical, Horizontal, BTH products include all or Inclined Mounting kinds of electric plant ana Sizes from i H.P. to I H.P. equipment ; and Mazda, Three-phase up to 550 volts Mercra, and Sodra lamps Single-phase up to 250 volts D.C. up to 520 volts BTH THE BRITISH THOMSON HOUSTON COMPANY LIMITED. RUGBY. ENGLAND. A J 144 6 E l e c t r ic a l R e v ie w N o ve m b er 8.

At the B.B.C. Accurate time is distributed throughout Broadcasting House by the Gents’ Electric Impulse Master Clock shown on the right. B B C. Engineers know that the Electric Impulse Clock System is ideally suited to large establishments where accurate, uniform time—inde­ pendent of mains variations—is of prime importance. That is why they chose GENTS ^ m O F LEICESTER Electric Impulse Clocks

GENT & CO. LTD.. FARADAY WORKS. LEICESTER LONDON : 47 VICTORIA ST., S.W.I N ovem ber 8, 1946 E l e c t r ic a l R e v ie w 7

until StuktiA H int 8>le.ctlcStaiic

Full particulars on application

STURTEVANT ENGINEERING CO. LTD., 25 WORCESTER RD., SUTTON, SURREY. LONDON OFFICE : VICTORIA STATION HOUSE, VICTORIA ST., S.W.I STREET LIGHTING

THE SPAN WIRE SUSPENSIONS USED FOR THE NEW LIGHTING IN

OLD BOND ST., LONDON, & HIGH ST., RUGBY

WERE SUPPLIED BY

ielephone LONDON ELECTRIC FIRM LTD. « TELEPHONE : E L E C T B IO , PHONE u p l a n d s 4871/2. SOUTH CROYDON, SURREY c e o t d o n . N ovem b er 8, 1946 E lectrical Review

OVERHEAD TRANSMISSION Erecting high towers and high voltage trans­ mission lines is part of our business at B.I. Callender’s ; many miles of the Central Electricity Board’s Grid System were constructed by us. One of our recent Grid extension contracts for the Board is the 52 miles 132 kV primary, double circuit line, linking sub-stations at Bournemouth, Salisbury and Andover.

BRITISH INSULATED CALLENDER’S CABLES LIMITED NORFOLK HOUSE, NORFOLK STREET, LONDON W.C.2 1 0 E l e c t r ic a l R e v ie w N o ve m b e r 8, 1946

Pulley wheel to carry control cables for rudder and ailerons on Horsa glider, machined from Bakelite Laminated. / , C A M 'T SA V E M O C H

6 U T , c a n s a v e BAKELITE n o W I'VE JOINED EHE STAE

s a v in g s g r o u p

REGD. TRADE MARKS LAMINATED for hard service

Bakelite Laminated combines lightness with re­ markable toughness. It is resistant to water, heat, acid, chemicals, oils, abrasion . . . gives excellent electrical properties . . . and can be machined to fine limits. The tensile strength of one standard grade exceeds 18,000 lb. per square inch. Available in 40 different grades and a variety of forms including æ M sheets up to 6 inches thick, rods, tubes and special shapes. Further information on request. BAKELITE LIMITED Pioneers in the Plastics World % 18 GROSVENOR GARDENS • LONDON S .W . I T 59 Even a shilling or two saved each week soon adds up to a really useful amount if it’s regularly put aside. But regular weekly saving is much easier when you belong to a staff Savings Group. Then OKERIN the money is collected weekly or monthly— just as you wish—-and invested for you. And it is by LOW POWER FACTOR regular saving that you help not only yourself but the Nation, which needs every penny saved for the vital work of reconstruction. If there’s already a WAXES Savings Group where you work, join to-day. If there isn’t, have a word with your departmental A N D COMPOUNDS manager, foreman or shop steward. T H E O K E R IN di-electrics, de­ ANOTHER GOOD SAVINGS IDEA! signed specially for impregnating, sealing, filling and finishing Coils, Every place o f employment can run a National Savings Cables, Condensers, Batteries, C lu b as well as a Savings Group. Clubs exist fo r the Transformers, etc., conform to special purpose of helping you to save without dis­ definite specifications and include turbing your normal Savings, fo r special occasions grades which are stable under such as Christmas, for holidays or for outings. extreme working conditions and Material for running Savings Clubs and Groups is resistant to moulds and fungus. supplied free. Explanatory literature from : Tested in service from the Arctic to the Tropics. THE NATIONAL SAVINGS COMMITTEE Manufacturers are in­ 20, Great Smith Street, Westminster, London, S. W. 1 vited to make use of ★ our specialised Re­ It's easier to save in a search Department Telephone : Temple Bar 5927. STAFF SAVINGS GROUP Astor Boisselier & Lawrence Ltd. Sales Dept. : Norfolk House, Issued by the National Savings Committee Norfolk Street, London, W.C.2 N ovem ber 8, 1946 E l e c t r ic a l R e v ie w 11

T H E F IR S T 10 k V . TRANSFORMER (I50h.p.) EVER BUILT This Ferranti Trans­ former, built 56 years ago, embodied a ducted core and ducted wind­ ings—Two fundamental features of design used in the large High Voltage Power Transformer o f to -d a y . 4 R A \ T I ïra n e t à-

A 40,000 kVA Ferranti Power Transformer of modern design

POPPY DAY N0V.9

FERRANTI LTD HOLLINWOOD, LANCS. London Office : KERN HOUSE • KINGSWAY WC2

FT70 12 E l e c t r ic a l R e v ie w November 8, 19^

ROTHmiLL CABLE INSULATING PAPER flUCHMUTY & LONDON MANCHESTER BIRMINGHAM — „ I I r i t x J ROTHES PAPER , 372 Corn Exchange , TiilllA IfillMtlL T Co Xtd. MILLS, MARKINCH 1 Tudor Street Buddings l i - M U f I SCOTLAND E C 4 Corporation Street Colmore R0w N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 1 3

F r o m the world - famous Terry factory come steel clips, bronze clips, stainless clips, big clips, little clips, wide clips, narrow clips — in fact clips in every con­ ceivable shape and size. Illustrated here are two of our stock patterns, 8o and 8i, made in a range of sizes to grip from J in. to if in. Maybe a clip of special shape would be necessary for the job you have in mind. Well, we can help you because we make clips for hundreds of uses. We can make to print or specifica­ tion, or our Research Department will design for you. Our knowledge of clips has advanced side by side with our 91 years’ spring-making experience, and we should like to send you our catalogue.

Soli Maktrs: HERBERT TERRY & SONS LTD., REDDITCH LONDON MANCHESTER BIRMINGHAM PS

h T E R R Y S P R IN G }

•fa and just a few special shapes we have made to order. TO EstablisbtA ilj5 1 4 E l e c t r ic a l R e v ie w Novem ber 8, 1946

The Britannia Battery of 11 6 cells of 500 ampere- hours capacity at a B.B.C . Transmitting Station.

STATIONARY LEAD-ACID BATTERIES . . . . embody the latest knowledge, the result of many years of technical research and battery manufacture, and are to be found where dependability and long life are of vital importance. BRITANNIA BATTERIES LTD • REDDITCH • WORCS 7/46

M E K E LIT E Industrial Lightinf Units are available with various lengths of arms and pillar. Bases for wall, bench or machine mounting; for conduit o r side entry w ith clamp for supply cable. Also heavy bases for portable use. Small reflectors for 12-volt 'amps can be supplied.

Catalogue sent free on request.

MEK-ELEK Engineering Ltd., 17 Western Road, Mitcham, Surrey Phone: MITcham 3072 Cables: Mekelek. London N o vem b er 8, 1946 Electrical Review 15

THE ENGLISH ELECTRIC COMPANY LTD. London Office: QUEEN'S HOUSE, KINGSWAY, LONDON, WC.2 INDUSTRIAL MOTOR WORKS ■ • • BRADFORD 1 6 E l jc t r ic a l R e v ie w N o ve m b er 8, 1946

% for every industrial purpose

TINMAN’S SOLDER

BLOWPIPE SOLDER

SOLDER PAINT

SOLID SOLDER WIRE

CORED SOLDER WIRE

SOLDER RINGS AND WASHERS

SOLDER TAPE AND STRIP

S i ^ REMEMBER generously || $pecja| flux for electrical work November 8, 1946 E l e c t r i c a l R e v ie w 17

This simple, compact service unit incorporates everything you need for the supply intake and control for domestic con­ sumer’s installations. The three main components, Supply Intake Chamber, Main Switch Chamber, and Consumers' Fuse Cham ber, can be assembled in various formations to suit most requirements.

W rite for details.

CONSUMER S SERVICE UNIT W.T.HENLEY'S TELEGRAPH WORKS CO.LTD.

5 1 - 5 3 HATTON GARDEN • LONDON E • C * I epA m s^henletbl, s%%h, l ondon

A t IS Electrical Review N o ve m b e r 8, TRANSFORMERS

with 132 kV o n -lo a d t a p changer, as supplied to the C.E.B. N ovem b er 8, 1946 E l e c t r ic a l R e v ie w 19

It feems hardly poffible that fuch tools as thif were ufed for fcrewing in fcrews by the thoufand. Nevertheleff they were. Fo filly ! Thank goodneff we know that for repetition affembly the fenfible way is to ufe fmall power tools and fo fave time, fatigue and l.f.d. Thofe poor perfons of a paft era never knew of Defoutter Tools. How fad! Areyou not forry for them ?

(Pleafe do not fend meffages to fa y that our ufe °f f ’s tf miftaken. We don’t give a faufage.)

DESOUTTU Specialists in Lightweight, Pneumatic and Electric Portable Tools.

DESOUTTER BROS. LTO. (DEPT. R ) THE HYDE, HENDON. LONDON, N.W.9. TELEPHONE : COUNDALE 6346-7-8-9. C J L C .I6 I 2 0 E l e c t r ic a l R e v ie w N o ve m b er 8, 1946

IN MORE MORE RENDEZVOUS of relaxation

the LIGHT entertainment is carried un iv e r s ally via

pioneers of the

CONDUIT TUBE

That so many of the lights, which go with the laughter, in the entertainment W orld are safely conducted by M ET A LLIC is a fitting compli­ ment to their consistent accuracy and quality.

METALLIC SEAMLESS TUBE CO. LTD- Ludgate H ill, B'uminghdm. Phone : C E N . 7167. G ram s: "F la s k ", Birmingham Sales Depots: L o n d o n :88 G o sw e ll Rd 3 a S .V i e N w castletle-on-Tyne: St. John Street. Leeds: 5 York Place. Swansea: 1 Grove Place. Glasgow: 137a St. V in ce ^Ne Street November 8, 1946 Electrical Review 21

CHECK THESE FEATURES —Features that emphasise the value of ELECTRIC COOKERS

E.D.A. Interchange­ ability (Grill Boiler Pressed Steel Hob and Boiling Plate). with Chromium Plated finish. Simmering device if required. Thermostatic Oven Control. 0 Precision building on modern Power tracks Plug-in Elements § ensure easy recondi­ © throughout. tioning. JACKSO N 192 SERIES IV. All these features plus —the exceptional fine quality— well planned mechanical construction— completely dependable electrical per­ E.D.A. Earthing formance— make the Jackson Cooker the logical © throughout. choice of all who buy with an eye to the future. JACKSON ELECTRIC STOVE CO. LTD., 143 Sloane Street, S.W .l ’P H O N E : S L O a n e 6248 2 2 E l e c t r ic a l R e v ie w N o ve m b e r 8, 1946

The ability to perform such a delicate operation is evidence of the efficiency and versatility of Pultra £ Lathesand theirequipment. fiThey! are ideal for all small ^work calling for maximum ^accuracy. Write for Catalogue CM.

PULTRA LTD 2 4 GRAVEL LANE,SALFORD 3. MANCH ESTER. Phone. BLA.9I8I. November 8, 1946 E l e c t r ic a l R e v ie w 2 3

.JJ ' S i ^

/ / / > I \ \ \ / / / \ \ \

To see the chemical content you need a spectroscope, but for good seeing—indoors and out—you need

BENJAMIN LIGHTING

By splitting up the light the spectroscope enables us to discover the details of the composition of a substance. By using Benjamin lighting in a factory we are able to discern clearly all the detail we require in any manufacturing process. The Benjamin Engineering staff is at your service to help you or to plan the lighting for all kinds of plant. BEN 7AM 1 N

THE BENJAMIN ELECTRIC LTD • BRANTWOOD WORKS • TOTTENHAM • LONDON • N 17 Telegrams: “ Benjalect, Southtot, London.” Telephone: Tottenham 5252 (5 lines) LOCAL SERVICE: 9& 10, Victoria Buildings, 5 Corporation Street; 49, Basinghall Street, BIRMINGHAM 2. LEEDS I. 24 E l e c t r i c a l R e v ie w November 8, 1946

ASSURANCE MADE DOUBLY SURE . . .

c ith a litc EMERG ENCY LIGHTING SYSTEM

The assurance of a good time at the Trocadero is made at the jfc doubly sure because the lighting of the Restaurant is safeguarded by the Katholite Emergency Lighting TROCADERO System which incorporates a D.P. Battery. RESTAURANT.

BAKEWELL L o n d o n O f f i c e : 5 0 Grosvenor THE D.P BATTERY C° LTD DERBYSHIRE G a rden s . Vic tor ¡a . S.W.1

¡INSTER BRIDGE ROAD. LONDON. S.E. I. TELE1 N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w 2 5

THE PROBLEM

T H E A N S W E R

T(PE M 35

DESIGNED TO THE SPECIFICATION OF THE MINISTRY OF FUEL & POWER MECHANISATION ADVISORY COMMITTEE

80 AMPS 2 2 " HIGH 2 10 / 2 4 0 LBS. 660 VOLTS DEPENDING ON FITTINGS 2 4 WIDE

PAMPHLET Kl 12/25 ON REQUEST (®i) m . &~cTs w it c h g e a r l t d . V ^ / KELVINSIDE WORKS, KIRKINTILLOCH, GLASGOW SALES & SERVICE: OLIVE GROVE RD SHEFFIELD. 1. LONDON OFFICE : 36 VICTORIA ST.. S.W.I 2 6 E l e c t r ic a l R e v ie w November 8, 1946 HEAVY DUTY P. & B. Insulating Tape is extensively used where rugged 'toughness ’ is essen­ tial — for motor leads, trolley poles, wrapping machine cables in mines and for a variety of purposes in shipbuilding. LONG LIFE... Proof against water and seawater and the fumes of acid and alkalis, P. & B. Tape retains its adhesiveness and provides per­ manent resistance to mechanical damage. Supplied in rolls from width upwards. W rite for samples and prices. THE RUBEROID COMPANY LTD. 92Commonwealch House, NewOxford St. HART BATTERIES London, W .C. I - F O R ------i HIGH RESISTANCE ELECTRIC POWER LIGHTING INSTALLATIONS

BY APPOINTMENT Accumulator Makers to H.M. The King. HART ACCUMULATOR CO. LTD. IM* M ARIH6ATE LANE. STRATFORD, LONDON, E.I5. Te/ephones : MARyland 1361 ¡3 INSULATING TAPES Branches at Birmingham, Bristol, Cork, Dublin, Glasgow, Manchester. Sewcastle-on-Tyne, Sottingham and Westminster A 11UB 1: 1101D PRODUCT

Specialists in Precision Woodturnerif Sincel8G2 & m

Enquiries to • ^ T H O M P S O N JOHN ISMAY & SONS irn (Woodturners Ltd) CROSS HILLS • KEIGHLEY 'YORKS 10 Bedford Street, London w C2 •Phm : CFCSSHIL LS 513 -3 TVRMWOOB CROKM US Telephone : Temple Bar 7347 * ‘ N o vem b er 8, 1946 Electrical Review 2 7

LIFT MOTORS unseen, unheard take the hard work out of stair climbing

BROOK MOTORS LTD HUDDERSFIELD

ENGLAND V E l e c t r i c a l R e v ie w N o ve m b er 8, 1946

IN S U L A R ELEC T R IC LA M P W O R K S LTD., 40 50 New Cleveland Street, Hull. Phone ; 3 3 8 3 6 . 'Grams : Insulalamp, Hull.

The registered Trade Mark on Ashley Elec­ trical Accessories is a guarantee of reliability and of q uality second to none.

It is regretted that supplies are still far short of customers’ re­ INCREASING DEMAND quirements, but output and the present man-power problem are respon­ is being distributed in strict fairness to all. sible for some delay in delivery of these efficient power units. But every endeavour is being made As the raw material to speed up manufacture and our customers can situation improves, be assured that prompt delivery will be resumed delays and shortages w ill be eliminated. at the earliest possible moment. TILLING-STEVENS LIMITED ASHLEY ELECTRICAL AND MECHANICAL ACC E SSOR|e S II- ENGINEERS LONDON - MAIDSTONE - HUDDERSFIELD i m M M n a a N ovem ber 8, 1946 E lectrical Review 29

. . . ’S * " G I a s £ ® * ^ >

REMEMBER GENEROUSLY T h e F a m o u s M.E.M Ironclad Switch re-designed for POPPYDAY H,R.C Fuses

The new “ Glasgow-Rex ” H.R.C. is the first o “ Kantark ” H.R.C. standard cartridge fuses with the M.E.M. programme of new developments. B.S.S. 88/1939 A.C.4 and D.C.3. Appearance, Its attractive styling is the work of a prominent workmanship and finish of these switches will industrial artist and is in keeping with the win the admiration of engineers everywhere. advanced design of the whole unit. Easily Yet this high quality equipment is offered at convertible for different duties and surprisingly reasonable prices. Only M.E.M. intensive compact, this new version of an already specialisation could produce such value. world-famous switch is convincing A descriptive list No. 278 is available proof of the M.E.M. leadership in giving full details of the new switchgear design. “ Glasgow-Rex ” range rated from The “ Glasgow-Rex ” complies fully I * ■ 30-200 amps. Send for your copy with Home Office regulations and the f°day.

Switch, fuse and motor control gear, electric fires and localised lighting equipment MIDLAND ELECTRIC MANUFACTURING CO. LTD., BIRMINGHAM, 11

BRANCHES IN LONDON & MANCHESTER 3 0 E l e c t r i c a l Rjtvte w November 8, 1946

MY FATHER AND HIS FATHER

BEFORE HIM . . .

When it comes to tradition G.K.N. can show as clean an escutcheon as the next firm — bolts, nuts and screws rampant all the way and never a bar sinister among them. But it’s the future we really specialise in. By con­ stantly improving old methods of fasten­ ing one thing to another, and by developing new methods a .little before their time, we The G.K.N. Advisory Bureau, Heath Street, try to make industry in general an easier job Birmingham, is willing to co-operate icith for you, your son and his son after him. those who are interested in modern fastening devices and assembly methods.

Screw Dept., heath street, Birm ingham . Bolt & N ut Section, darlaston, staffs. r HIGH EFFICIEDCYPL flflQ muniCIPRL POWER

RICHHRDSOnS WE5T G R R T I

BROWfl BOVERI LTD HRHTLEPOO N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 3 ]

A ccessibility i n R e l a y s

is a

¿ e c w t t cu n d

HEBBURN-ON-TYNE ENGLAND N o ve m b er 8, 1946 E l e c t r i c a l R e v ie w 3 2

Another new HOOVER product to be launched shortly SHADED POLE MOTORS of entirely new design If you make Refrigerator condensers, Air conditioning units, Room Heaters, Fans, or similar appliances you will find these motors particularly effective on account of their high starting Torque silence in reliability, and we would strongly advise that you get in touch with us now as to your future requirements. ALSO FRACTIONAL H P. MOTORS T W O TYPES TO BE AVAILABLE Squirrel Cage Induction Motors. Split Phase, Capacitor or Three L a r g e ...... 400 grm/cms. Phase Types. Solid or Resilient S m a ll...... 130 grm/cms. mounting. Ball or Sleeve Bearings. Overall Body Approx. ! Speed . . approx. 1,100 R.P.M. Length Diam eter W eight i on load. 10 7 32 in. 6 9/16 in. 24 lbs. Suitable for 200/250 volts 50 cycle A.C. 10 15/32 in. 6 9/16 in.

II 25/32 in. 6 9/16 in.

HOOVER LTD Performance curves and data or PERIVALE • GREENFORD ■ MIDDLESEX other types supplied on request

T h e com plete, up-to-date guide to telephony and telegraphy A Handbook of T elecommunication (Telephony and Telegraphy orer li'fre s )

B y BERTRAM S. C O H EN , O.B.E., M.I.E.E., F.Inst.P. E dited by F. G. C. Baldwin, o.b .e ., m .i .e .e . This book is by a well-known inter­ GREAT national authority, and is tremendously helpful to Post Office engineers concerned VARIETY with telephone and telegraph work, and to all students of these subjects. It includes particulars of the latest techni­ Sfo HAMPTON WORKS cal developments. 30/_ nst ( STAM PI N C S )( 0 ) L I M I T E D P R E S S W O Ii v L V E x P E R T s P IT M A N , Porker S t., Kingsway,London, W.C.2

STIRCHLEY, BIRMINGHAM TW YNING ROAD, (3 lines . G ram s: Radiagills, B ham. N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w 3 3

BE THANKFUL for PEACE . . .

To those who paid, and are still paying, the price of victory we owe an eternal debt. In thankfulness for their sacrifice let us do all we can to ease the physical hardships of those who have suffered, and of those who depended on the many who will not know the Peace. Let us then

GIVE GENEROUSLY on POPPY DAY

EARL HAIG'S BRITISH LEGION APPEAL FUND, RICHMOND, SURREY

It is with pleasure that Johnson & Phillips Ltd., donate this space as a small appreciation of their debt to our Fighting Aden. Novem ber 8, 1946 E l e c t r i c a l R e v ie w 3 4

CERAMIC INSULATORS FO R R A D IO

IN ADDITION TO A COMPREHENSIVE RANGE OF STANDARDISED SIZES, SPECIAL TYPES ALSO FOR ARE MADE AT HIGH TENSION SHORT NOTICE LOW TENSION Send particular» of your requirements a l w a y s IN s t o c k AND to o u r Technical Service Dept. IMMEDIATE DELIVERIES REFRACTORIES JAMES MACINTYRE & Co. Ltd. WASHINGTON’ WORKS BURSLEM PHOHKAgONCROS» b Tr m T Ñ G H ^ M

For Quiek and efficient identification for marking cables, components, etc., in the Electrical and W ireless PLATFORM ELEVATING & HIGH LIFT Electric TRUCKS IDENTIFICATION TAPE SELF-ADHESIVE FINGER TIP SEALING B.E.V. Type H.45 Hip L'ft Fork Truck. T*i "^cel steer in SAMUELJONES hydraulic ram lift &.p . CO.on LTDTTn 16-17 NEW BRIDGE STREET, E.C.4 TELEPHONE CENTRAI. 65CO 3 5 November 8, 1946 E l e c t r ic a l R e v ie w

"MY CUSTOMERS WANT QUALITY THAT'S WHY / ADVISE THEM TO WAIT FOR

.DOMESTIC ELECTRIC APPLIANCES

CLEANERS 'WASHING MACHINES ' IRONS IRONERS ' KETTLES IMMERSION HEATERS AND CIRCULATORS ETC. ' ETC.

The Hotpoint Electric Appliance Co., Ltd. Crown House, Aldwych, London, W.C.2

TRADE

MARK

Manufacturers of these and many other Electrical Accessories

BRITISH • GENERAL MÍP-c?,(1941) LT.P ».CHARLOTTE STREET, LONDON, W.l. N ovem ber 8, 1946 E l ec t r ic a l R eview

L‘lllllllllllllllllllUI*»lllll|l|,,,ll|ll,|l|,l,,,',,l,,,,,,l,m

j\\A yuU LU tcfs

The terminal blocks, two-way, three- way, and four-way, are a stock range which we sell in minimum lots of one § gross. Buy more, and they’re cheaper, 1 of course.

LEOPOLD ROAD, ANGEL ROAD, EDMONTON, LONDON, N.I8 |

TELEPHONE : TOTTENHAM 1491 (4 LINES)

1 llllll,llllllll,imli,iiiiiiiOii'i|" " i " i " " l" ,i|"l""-ll"li" MI"nl,"l''l" l"llilllil1 ...... N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w 3 7

Here’s where your eyes need the good light of a

S ie m e n s LAMP

Sell SIEMENS ... the all-British lamp

Made throughout at Siemens Lamp Works, Preston, Lancs. SIEMENS ELECTRIC LAMPS AND SUPPLIES LTD., 3 8 / 39 Upper Thames Street, London, E.C.4.

Branch« at : Belfast, Birmingham, Bristol, Cardiff, Dublin, Glasgow, Leeds, Liverpool, Manchester, Newcastle-on-Tyne, Nottingham, Sheffield. 38 Electrical Review November 8, 1946

WATER-

■ "TURBINE I r / m m ■ alterítors 1

(Photograph by courtesy of Messrs. Christy Bros. & Co. Ltd., Chelmsford) Three 810 kVA, three-phase, 50 cycles, 420 volts, 428 r.p.m. Salient-pole revolving field Alternators driven hy Gilkes’ Turbines ELECTRICAL DRIVES

c m s u ( t

MANUFACTURERS OF ALL KINDS OF ROTATING ELECTRICAL MACHINERY FOR ALL INDUSTRIES ^ELECTRIC CONSTRUCTION I » ? GEAR o RÄ WOLVERHAMPTON C û lM - lUMETAbPUTE ^RECTIFIERS. TELEPHONE 21455 (7 LINES)

London Office: 61 CATHERINE PLACE. WESTMINSTER, LONDON. S.W.I. Telephone: VICto, rio «62-3 39 November 8, 1946 E l e c t r ic a l R e v ie w

• Element of nickel-chrome cen­ trally embedded in refractory • Cool Insulated terminals with dome nose terminal screws • Can be fitted at any angle

BER R Y ’S ELECTRIC LIMITED . London .... Birmingham .... Manchester .... Edinburgh .... Newcastle . . . November 8, 1946 E l e c t r i c a l R e v ie w

Your production can be increased materially by up-to-date— E l e c t r ic a l

In sta lla tio n

Some Recent WE HAVE ON OUR Installations STAFF EXPERTS Henry Hope & Sons, Ltd. Smethwick TO ADVISE YOU Complete network of substations, ring mains, ON YOUR PAR­ power installation,Tung­ sten, M.V. Discharge TICULAR NEEDS and Fluorescent lighting Beans Industries, Ltd. Complete power install­ ation in Large Shell Forge and Gun Works MATERIALS ARE Joseph Lucas, Ltd. Complete areas of AVAILABLE TO works lighting, power Only three Com­ and allied installations MEET MOST ponents, easily Birmingham Railway assembled with­ Carriage & W agon Co. Ltd. REQUIREMENTS o u t tools. Installation of sub­ stations, ring mains and complete power install­ ation NEW MOULDED FITTING George Morgan, Ltd., Selly Oak CONSULT US in “ Beetle” Plastic (II Colours), carries Complete electric light­ a Maxtrip 2 opal or opalised lamp. ing and power and ON YOUR general engineering of The Bakelite base, carrying contacts, large Stamping Plant INSTALLATION can be fixed and wired independently Chance Bros., Ltd., Smethwick PROBLEMS of the cover, which may be screwed Complete lighting, on after decorating is finished. power, heating and en­ Drawings and gineering constructional “ Knockouts” at sides and ends for surface w ork Specifications wiring. Ample room Internally for wiring. prepared SPEEDY & EYNON LTD. I 63a, STRAND, LONDON, W.C.2 LINOLÏTE LTD. Established 1893 TEL: TEMPLE BAR 6067 MALMESBURY, WILTSHIRE Tel.: Malmesbury 2240 LION WORKS WATERLOO ROAD WARSTONE LANE STATION BUILDINGS London Office BIRMINGHAM 18 STOKE-ON-TRENT 158 BISHOPSGATE, E.C.3. TEL. : 9623 4

729 Gl°vERs a0 November 8, 1946 E l e c t r i c a l R e v i e w 41

c a M i s f t f i a SLOW SPEED DRIVE.

)

T IN P L A T E M ILL. Creeping speed of 2 r.p.m. provided by L.D.C. Geared Motor Unit.

pS LANCASHIRE DYNAMO & CRYPTO ltd TRAFFORD PARK. MANCHESTER, 17 WILLESDEN. LONDON, N.W.IO

Associated Companies .-—Foster Transformers & Swltchgear Ltd. • Crypto Ltd. • Crypton Equipment Ltd. 4 2 E l e c t r i c a l R e v i e w N o ve m b er 8, 1946

Every department, every office, warmed to a pleasant healthy temperature means comfortable workers, producing to the limit. The secret ?—thorough distribution of warmed air at just the right temperature ; in short an efficiently planned system of G.E.C. electric unit heaters. Inexpensive to instal and operating at low cost, these heaters need no floor space, no boiler house, and no labour. Each unit can be worked independently with or without thermostatic control. Hi

Highly skilled G.E.C. specialist engineers « are available to submit proposals on the ll Í planned installation of these Units or to advise on any heating problems. tti Hi G.E.C. Unit heaters of this type are available 8* from 5 to 20kW. The fan ensures adequate '* heat distribution during the winter, and is a useful adjunct to the ordinary ventilating Hi system during the summer. H i fcq *N| ELECTRIC UNIT HEATERS Advt. of The General Electric Co. Ltd.. Magnet House, Klngsway, London, W.C^ 1 N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w 43

G l e c t t ic

The type “ CS ” thermostat is specially designed for the automatic control of electric ovens and its reliability has been proved by years of operating experience. Sensitivity and ability to give trouble-free performance after years of hard work were the two principal objectives of design. The extensive use now made of the instrument is a measure of its success. THE RHEOSTATIC CO. LTD. SLOUGH Tel.: SLOUGH 23311/6. Grams: RESISTANCE, SLOUGH

THE

What it says is very much to the point! In the smoothest HACK SAW BLADE manner, it gets its teeth into the subject and with an easy per­ sistence cuts deeply into the toughest s p e a k . f r ^ problems.

This eloquent effi­ ciency is shared by many other “Eclipse” Specialities for the Engineer Craftsman. Obtainable from your usual Tool Dealer

JAMES NEILL Í CO. (SHEFFIELD) LTD.. SH E F F I E LD. 11 Novem ber 8, 1946 44 E l e c t r i c a l R e v ie w

OCIAL

The call upon equipment tor electrical supply is heavy and increasing.

When production and maintenance resources are strained it is more than

ever essential to ensure safety and freedom from trouble by installing only the best obtainable transmission material. specify .A. CABLES

MEMBERS OF THE C.M.A. The Anchor Cable W . T. Glover & Co. Ltd. Liverpool Electric Cable Co. Ltd. Plrelll-General Cable Greengate & Irwell Co. Ltd. Works Ltd. (General British Insulated Rubber Co. Ltd. Callender’s Cables Ltd. The London Electric Electric Co. Ltd.) Connollys(Blackley) Ltd. W . T. Henley’s Telegraph W ire Co. and Smiths Ltd. St. Helens Cable & The Craigpark Electric W orks Co. Ltd. Rubber Co. Ltd. Cable Co. Ltd. Johnson & Phillips Ltd. The Macintosh Cable Co Siemens Brothers & Crompton Parkinson The India Rubber, Gutta- Ltd. Co. Ltd.(Siemens Electric Ltd. (Derby Cables Ltd.) Percha & Telegraph Lamps and Supplies Ltd ) The Metropolitan Standard Téléphonés Enfield Cables Ltd. Works Co. Ltd. Electric Cable & Edison Swan Cables Ltd. (The Sllvertown Co.) & Cables I t-w Construction Co. Ltd. Union Cable Co. Ltd

Advt. of the Cable Makers’ Association, High Holborn House, 52-54 High Hoiborn, W .C.I. Holb0rn 7 6 j j November 8, 1946 E l e c t r ic a l R e v ie w 4 5

E ven i f y o n c o u l d

Even if you could open this lamp, you would not be able to see that the experi­ ence of more than half a century of lamp manufacture is built into it. Nevertheless, h it’s this experience that enables every Philips lamp to trans­ form electric current so economically into clear, bright light.

—the lamps the Public like LHakers of Good Lamps for over jo Years

PHILIPS LAMPS LTD., CENTURY HOUSE, SHAFTESBURY AVENUE, W.C.2. 46 E l e c t r ic a l R e v ie w N o ve m b er 8, 1946 r We don’t sell Transformers “OFF THE SHELF.:.

There is nothing “ ready-made" about SAVAGE transformers. W e build any model up to 5 kVA to suit your exact requirements. This may mean a little extra trouble at first but it is your guarantee that the finished article will fit into your production with the greatest possible efficiency.

LTD. 51 NORTHGATE STREET, DEVIZES. Phone 536

J & 7 ¿ ^ o u & d /

P.B.M. facilities include a complete, modern, highly efficient plant, equipped to handle any light alloy founding and machining job — and to produce anything from blueprint to finished assembly.

LET US HAVE YOUR ORDER NOW

O u r toolm aking departm ent, geared as it is for high capacity, is hard pressed. Until we can get more labour of the standard we require and materials to suit the specifications of the jobs, we must mark time on new orders. Outstanding work for which we have quoted can be allocated future capacity if you will inform us that capacity will be required. W e can still quote for capacity in sandcasting, heat-treatment, X-ray and chemical laboratory, and machine shop departments. So please help us to “ do the job by giving us yo u r orders in good tim e. PERRY BURR M L CORIPflRYITD

Laboratories : Oscot, E h e r i n g Works: Works, Shady Lane.lJ I j Middlemore Road. Great Barr, Birmingham Handsworth.Birmingham Tel.: GREat Barr 1794-5. Tel.: NORthern 3366-7 Foundries : Wellhead Lane, Perry Barr, Birmingham 22B. Telephone : BIRchfields 4592 & 4593 47 N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w

Illustrated here are specimen Window Displays and advertisements which are being used in our Autumn and Winter Lamp campaign. Please ask your nearest EDISWAN Depot for full details, and particulars of showcards and other interesting material available. Remember the public will be asking for Royal “ Ediswan” Lamps by name. ROYAL EDISWAN LAMPS

THE EDISON SWAN ELECTRIC CO. LIMITED Novem ber 8, 1946 48 E l e c t r i c a l R e v ie w CERAMIC

O R E L B A R I CAPACITORS E L E C T R I C D R Y S H A V E R

T h e u .i .c . Fixed Ceramic Pot Britain Capacitor—KO 2944— illustrated CAN make it ! above, has been primarily de­ Yes, but like so many other nice veloped for use things at the exhibition, not for the Specially in transmitter Home market—yet. suitable for circuits. Made From the large number of enquiries PULSE WORKING only from the received, we are pleased to see that Capacitance Range highest grade raw the OREL BABY Dry Shaver 3 pF - 50 pF has created so much interest, but W orking Voltage materials and many thousands have to be exported 2 kV R.M.S. subjected to the R F . L o a d before we can supply the Home most rigorous m arket. U p to 10 pF 2 kV A w ith 2 amps. tests, its rating We are afraid therefore, it will be a U p to 50 pF 0.8 kV A w ith 1.5 amps. for its size is wet shave this Xmas, but further announcements will be made in the unsurpassed. Trade papers as soon as we are ready. Capacitance Range : 120—250 pF. R .F . L o a d : 26 kVA with 14 amps. Working Voltage : 5 kV R.M.S. SIEGRIST (OREL) LTD. Further details on application. 39 BERNERS STREET UNITED INSULATOR CO. LTD. LONDON, W .l Oakcroft Road, Tolworth, Surbiton, Surrey Phone : Elmbridge 5241. Crams : " Ca/anel, Surbiton " M t THE pioneers OP low LOSS C [ | , M| n m November 8,1946 E lectrical Review 49

*« B V ” SWITCHGEAR is now giving efficient service in substations and industrial plants throughout the world.

Manufactured by FERGUSON, PAILIN LIMITED nchester. 11 N G L A N D 0„ , : D R O Y LSD EN 1301 (8 lines) BIRMINGHAM : Entinfton 3775 LONDON: Temple Bar 8711/3 GLASGOW : Central S080 E l e c t r i c a l R e v ie w N o ve m b er 8, 1946

PLEASURE

TO WORK WITH Qumpton WoOoDL COBLES

CROMPTON PARKINSON LIMITED, ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON w Telephone : TEMple Bar 5911 Telegrams : Crompark. Estra’nd La fd 'm November 8, 1946 E l e c t r ic a l R e v ie w 51

Cork insulated milk retarder fabricated in I8 s.w.g. stainless steel by the Fuller Carbo- Flux process. Each compartment holds a hundred gallons; special valves in the base allow the milk to be drained when the correct temperature has been reached.

Photo by courtesy of Metaducts Ltd., Brentford.

IT WILL PAY YOU TO INVESTIGATE THE CARBO-FLUX WELDING PROCESS Consult FULLER ELECTRICAL & MANUFACTURING CO. LTD. (Associated with Asea Electric Ltd.) FULBOURNE ROAD, WALTHAMSTOW, LONDON, E.I7 Phone : LARkswood 2350 (10 lines). Crams : Fullmage, Telex, London

Branches : MANCHESTER. Blackfriars 2238 BIRMINGHAM. Kings Norton 1953

______GLASGOW Fuller Eaglesham 399 5 2 E l e c t r i c a l R e v i e w N o ve m b e r 8, 1946 M e e t M r .

Triumph after triumph marks the brilliant career of D. C. BIAS. Born in the fertile minds of “ Standard” engineers in 1937, the prodigy graduated from the University of Southgate in 1938, thereby confounding many eminent bi(as)ologists who had declared such a rapid development to be quite impossible. Be that as it may, D. C. Bias tackled his new life with energy, taking up appointments with a number of important municipal undertakings, principally in control of street lighting and ‘ off-peak’ loads. In 1939, he join^vthe R.A.F. and was seconded to AirfieloNLighting Control, playing an important p ^ cK m jh e conduct of the air war. Whilst stifr'TOmning his Service appointment he yer< haiNqme to turn his genius once again to mhmdpal life—genius which has been responsibhsTqr the saving of vast amounts of money af great quantities of fuel, in addition to hisN yeoman services in simplifying the control of street lighting and ‘ off-peak’ loads. It may be that you are even now looking into the problem of controlling your own ‘ off-peak ’ loads and street lighting. If so, you may be glad to learn just how simply, how inexpensively and how reliably it can be done by the D. C. Bias system. We shall be glad to send full particulars on request. Sratidard D.C.Bias System of Remote Control Standard Telephones and Cables Limited (Remote Control Section)

Oakleigh Road, New Southgate, N .n . Telephone: Enterprise 1234 N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w 53 5 4 E l e c t r i c a l R e v ie w N o ve m b e r 8, 1946

IN VERTED VERTICAL ISOLATION E.H.T. METALCLAD SWITCHGEAR.

TYPICAL “ IVI 22 PANEL METALCLAD SWITCHBOARD FOR II Kv. ISO MVA SERVICE (HAND AND SOLENOID CLOSING)

YORKSHIRE IVI o Metaidad Unit A CATON or COMPOUND INSULATE SWITCHGEAR PATENTS SHORT CIRCUIT TESTE concL onciüneeÄ üuiC o Ü i) in excess of breaker ratii LEEDS TELEPHONE 51039/9 C certified to BSS116/19 TELEGRAMS CO/VTftOLLCK up to rated eapacit

L O N D O N 1 GRAND BUILDINGS, T . , O F F IC E J TRAFALGAR SQUARE, W.C.2 wh>Whitehall k ?,* N°'3530 November 8, 1946 E l e c t r ic a l R e v ie w 55

h ' C/1Wra r u n c h Z u l dh °o?

i HE sparkling and crystal clear — the tumbler would obviously appeal to your sense of hygiene, but supposing both were hidden from view ? Containers of most water heaters, being metal, stain and fur up. But you can guarantee the inner cleanliness of the Hotric— the container is glass— Pyrex glass. Out of sight, but for ever invitingly clean and clear. Choice — correct choice — of water heating appliances is a vital part of the electrical con­ tractors’ service to the building effort — you cannot go wrong with Hotric. Mmmt

| i GALLON THERMAL STORAGE HEATER

HOTRIC LIMITED Sales Office : 198, Fore Streetv Edmonton, London, N.I8. Tottenham 1321

Manufactured by BRITISH MADE ELECTRICS LTD., Hotric Works, West Lothian, Scotland. Broxburn 191 (PBX) 5 6 E l e c t r i c a l R e v ie w Novem ber 8, 1946

I RECKON IT WILL PAY TWICE OVER

A WELL-PLANNED and executed LIGHTING All concern- ADVI SORY ed w,,h ,he lighting scheme pays dividends in two S F R V I r F in5,allation or renewal of lighting are invited to com­ directions. Employees visibly respond to municate with our Lighting Advisory Service, Bridle better seeing conditions — suffer less Path, Watford. Telephone : W atford 7701-08 fatigue, work more accurately, more cheer­

fully. The sub-conscious effect on customers

is reflected in increased sales.

LAMPS IN FITTINGS

The British Thomson-Houston Co. Ltd. Crown House, Aldwych, London, W.C.2. ELECTRICAL REVIEW Managing Editor : Hugh S. Pocock, M.I.E.E. November 8, 1946 Technical Editor : Commercial Editor: C. O.Brettelle, M.I.E.E. J. H. Cosens C ontents Page Page Editorial.—Let’s Be Realists 717 Commerce and Industry . 743 Distribution in Lancashire 719 Electricity Supply . 749 Bradford Salary Decision . 723 Local Exhibitions . 751 Views on the News 724 Concrete Pole Tests . 753 Supply Industry’s Future. By a Forthcoming Events . 754 Special Correspondent 725 Circuit-Breaker Operation . . 755 Correspondence 727 Commercial Vehicle Hire. By Personal and Social . 729 F. E. Sugden, Barrister-at-Law . 757 Meter Design .... 732 Spain’s Electrical Imports . 758 Southern Electrification 733 Financial Section . 759 E.D.A. Conference 735 New Patents . 762 Reconstruction in Burma 736 Contract Information . . 763 Railway Points. By H. C. Towers, M.I.E.E...... 737 Classified Advertisements 63 Parliamentary News . 742 Index to Advertisers . 100

EDITORIAL, AD VERTISING & PU B LISH IN G OFFICES : Dorset House, Stamford St., London, S.E.I Telegraphic Address : " Elecrev, Sedist, London.” Code : ABC. Telephone No. : Waterloo 3333 (50 lines). Registered at G.P.O. as a Newspaper and Canadian Magazine rate of postage. Entered as Second Class Matter at the New York, U.S.A., Post Office. Annual Subscription, post free : Great Britain and elsewhere (except Canada), £2 7s. 8d. ; Canada, £2 3s. 4d. Cheques and Postal Orders (on Chief Office, London) to be made payable to ELECTRICAL REVIEW LTD., and crossed ” Lloyds Bank."

[METW«! MICRO METWAY JUMBO

METWAY H g LTD. WRITE FOR tl Governing Managing director. 0. G. E. BARRIE

MXT, BRIGHTON 1, SDSSEX, ENGLAND

BRIGHTON 4 4 S i f.S.X . C v ilt* : METWXT BSICHTON co E l e c t r i c a l R e v ie w November S, 19

*4t has tliat Berry’s look....

W e take this casual remark as a high tribute. So little said, so much implied. Distinctive style, flawless finish, personal (A Oí craftsmanship—that is the “ Berry’s look.”

TcoÉ ou ii

ta o«

BERRY’S ELECTRIC LTD., 86 newman ST., W.i ntvtic

ÉlWll resta K whi CAMBRIDGE kne ELECTRICAL patu mouse INSTRUMENTS ai lo ai

A REVISED EDITION of this list is liitl now available. It includes specifica­ tions of almost all the Cambridge electrical measuring instruments, and should be in the reference library of every undertaking or institution con­ cerned with electrical measurements. A copy will be sent free to responsible executives. ASK FOR LIST 163-X CAMBRIDGE *Go “ ft 13 GROSVENOR PLACE, LONDON SV\ WORKS ; LONDON 8. CAMBRIDGE

1 so ELECTRIC4L REVIEW THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXIX. No. 3598. NOVEMBER 8, 1946______9d. W E E K L Y

Let’s Be Realists 30LITECH*j Co-operation to Safeguard the Industry’s Future

T could hardly have been expected that whilst accepting the policy on which the Iour industry which has been so pro­ Government insists, may yet retain those gressive and has enjoyed such freedom principles in organization and control from overriding controls would ever which the industry as a whole believes take kindly to the idea of nationalization to be essential to continue good relations and the threat of bureaucratic manage­ within the industry, and to safeguard ment which this has implied. incentive and freedom for progressive But those who have opposed nationali­ development. zation with every right to express their views should realize that the time has now Experienced Guidance Needed come when violent opposition to the It must not be forgotten that when Government’s plans, if continued, can M r. Shinwell undertook his task he asked only result in breaking up the present for the co-operation of the industry, organizations within the industry and, although he made it clear that the policy as a consequence, compelling the Govern­ of public ownership would be carried ment to adopt an even greater measure of through with or without that co-operation. control than would otherwise have been Having failed to get full assistance he has considered necessary. There is an obligation no alternative but to work out his own to all in the industry to be realists in this scheme without the hand of experience m a tte r. at his side to help to steer his course. In this issue we publish a contribution Framing a Policy from an individual widely known and The Minister, M r. Shinwell, has told us respected in the supply industry. His that he did not choose the job he has been views are addressed to the industry, but given, but, quite properly, having been they constitute in fact an appeal to the given the job, he is going to carry out the Minister to safeguard those things which policy of his Government to the best of have made our industry virile and efficient his ability. It is perhaps rather beside the and to frame his legislation with these point that, in the view of many people, things in mind. the present Government was actually ' So far the industry has made its protests caught without a policy for the electrical against nationalization, but now the time industry. But the fact that the policy of has come when, if disaster is to be averted, the Government is to be one which the the industry must be prepared to assist Minister himself will frame gives to the the Minister to navigate the ship. Mr. industry an opportunity, which may never Shinwell would be ruthless in fighting ^ come again, to bring its experience and opposition but we are confident that his ideas to the aid of the Minister and object and that of our readers are the endeavour to influence his views so that same, both desiring to do the best for a scheme may be thrashed out which, our industry. Mr. Shinwell, however, 7 1 8 E l e c t r i c a l R e v i e w Novem ber 8 , 1946 must at the same time follow the line laid expected to add another 300,000 tons to down by the Government. Let neither the 400,000 tons of coal saved e a c h y ® a r party jeopardize the industry’s future by existing electrification schemes. W ith through obstinacy. It is in that spirit the largest electrified service in the world we write and in that spirit we hope we and with nearly one-third of its whole shall be read. system already electrified, the directors of the railway have already satisfied them­ W h i l e common dimen- selves, the travelling public and the com­ Meters sions for securing inter­ pany’s shareholders of the wisdom of their changeability of quarterly go-ahead policy. Apart from the coal- meters for residential premises have been saving considerations the scheme will not settled by discussions between manu­ only permit sei vices to be speeded up and facturers and supply undertakings, criteria augmented, but will make an important of performance are far from being at so contribution towards smoke reduction. advanced a stage. Considerable changes are to be expected in the next edition of T h e scope for “ in- B.S. 37, but Mr. L. J. Matthews, in his Intrinsic trinsically safe ” electrical chairman’s address to the I.E.E. Measure­ Safety apparatus has been ments Section, mentioned a number of greatly extended since matters that still need clearing up before 1916, when the late Professor R . V. Wheeler the temporary stability required for the and Professor W. M. Thornton (as a issue of a British standard is even result of research carried out after the approached. It is to be hoped that, in explosion at Senghenydd Colliery) showed the event of nationalization of electricity that sparking risks could be eliminated by supply, no attempts will be made to impose restricting the current and suppressing the conformity to detailed designs of meters, voltage rise due to self-induction in as M r. Matthews believes may ultimately signalling circuits. The term has certain happen, so long as the present possibility limitations, however, and in view of the of useful technical improvement remains. modern demand for such apparatus in

A l o n g - t e r m v a lu e o f a industrial processes in which inflammable H.V. transmission - distribution vapours are present, the technical inform a­ Transmission system as compared with tion given in the new Testing Mem orandum generating plant is that it No. 10 (Stationery Office, 6 d. net) of the does not become obsolete in the same way M inistry of Fuel and Power, together with through load developments which require an account of the procedure to be adopted more efficient units of greater output. when submitting apparatus for prescribed Higher-voltage systems can be super­ tests, should be of interest to both manu­ imposed on existing mains to reinforce facturers and users. them but the latter still serve their original O n e class of building purpose. A n illustration of this was given Cinema which should above all by M r. J. A . Lee, in his chairm an’s address Wiring be very soundly and care­ to the I.E.E. Transmission Section, when fully wired is the cinema. he envisaged the construction of a 264-kV An outbreak of fire in a “ blacked-out ” grid “ backbone ” to which the present auditorium of this kind is too likely to 132-kV sections would be connected at raise a panic for anything to be left to various points. Mr. Lee is among those chance. In most districts safety regula­ who hold that designers should be in close tions are imposed (they are very strict in touch with men engaged on the job. London) but apparently even in some of C lo s e on our leading the larger cities they are not yet strict Southern article last week drawing enough. A t Liverpool a Committee of the Extensions attention to the fuel-saving Licensing Justices has found that electrical and other advantages of repairs were being carried out by electrifying the railways comes the inexperienced youths. Accordingly it announcement from the Southern Railway has now been stipulated that all installa­ of its proposal to convert a further 284 tion and repair work is in future to be route miles to electricity and to use Diesel carried out only by qualified electrical traction on all the remaining unelectrified engineers and a certificate to this effect routes east of Portsmouth. This is must be furnished to the Justices. November 8, 1946 E l e c t r i c a l R e v ie w 7 1 9 Distribution in Lancashire Meeting the Needs of Rural Consumers rW lO bring supplies to its rural consumers Barton power station of the Manchester -h- and to improve facilities in small town­ Corporation to a central point on the com­ ships (see “ Serving Rural Consumers,” May pany’s 11-kV network and the first control 31st issue, page 835) the Lancashire Electric or distribution centre was established at Hill Power Co. spent £750,000 on extending and Top. (No. 1 on the map on page 720.) consolidating its distribution network To provide a bulk supply to the Rochdale d uring the three years 1936-38. T h e w a r Corporation the laying of 33-kV underground called a halt to further progress but now the cables between the Radcliffe power station company is ready to resume and complete and the Corporation’s electricity works the provision of electricity supplies through­ followed and these were later reinforced to out its area. It was with this end in view, meet the growing demand of the Corporation, and to provide for power station extensions, now exceeding 35,000 kW. W ith the com­ that the parent company, the Lancashire pletion of the company’s Padiham power Electric Light & Power Co., Ltd., early station in 1927 a 33-kV feeder for interchange this year obtained sanction to increase its of load was provided between the Radcliffe authorized capital by £2,000,000 and issued and Padiham stations. 1,000,000 £1 cumulative preference shares. When the Kearsley power station was commissioned in 1929 it was decided that all transmission from that station should be at 33 kV and the main feeders then connected to the Radcliffe station were trans­ ferred to Kearsley and the direct supply routes to Radcliffe power station, Padiham power station, the Hill Top control, and the Rochdale Corporation were established and

Typical rural substation serving Mawdsley village and (right) Post Office telephone poles carrying l.v. overhead lines

The main trans­ mission system was developed in 1905 by the provision from the co m p a n y ’s R a d c liffe power station of six 11-kV feeders, part underground and part overhead, additions to have since then been augmented as required. these being carried out until 1921. The first On the Rochdale route five 33-kV feeders 33-kV development occurred in 1923 when now supply direct to the Corporation, and two interconnectors were laid from the are not tapped for the com pany’s distribution ; 720 E l e c t r i c a l R e v ie w November 8, 1946 similarly three feeders interconnect the extensive 33-kV development has taken place Kearsley and Radcliffe stations. The inter­ and control stations have been erected at connector between the Kearsley and the p oints 5, 6, 7, 8, 9, 10, from which, through Padiham stations has been utilized at two on-load tap-changing step-down transformers, points for the purpose of the company’s 11-kV feeders supply adjacent power con­ general distribution, and control stations sumers and l.v. distribution networks. have been established (Nos. 2 and 3), from The provision of a number of attended which, through step-down transformers, controls, with engineers resident in adjoining twelve feeders carry supply at 11 kV to the houses, provides, by means of on-load tap- adjacent power consumers and l.v. distri­ changing transformers, voltage regulation bution networks. Similarly the 33-kV inter- adjusted to the requirements of the area.

Map showing power stations, prii ¡pal substations and 33-kV mains

connectors between the Barton power station Contact points are also thus provided of the Manchester Corporation and the Hill between the area consumers and the operating Top control of the company (No. 1) have and engineering staff, and the arrangement been utilized by the provision of a control moreover allows the 11-kV feeder system station (No. 4) for supply in bulk to the to be sectionalized and local transmission Eccles Corporation. to be kept within reasonable mileage. Instead In the western half of the company’s area of the original six 11-kV feeders 105 now November 8 , 1946 E l e c t r ic a l R e v ie w 7 2 1 provide for the requirements of the power operation the company's system is divided consumers and distribution networks, and into eight mains districts. The following more it is of interest to record that the original detailed descriptions relating to the Chorley feeders, now forty years old, are still quite and Ormskirk districts are typical of the general organization and development of the whole of the com­ p a n y ’s system. S u p p ly to the 140-sq mile Chorley area is by means of duplicate 33-kV feeders to a main control station at Chorley and a single 33-kV feeder to a control at Wrighting- ton. These controls are interconnected by

Botany Bay control station, Chorley 33-kV feeders with a similar control at Ley- as trouble-free as cables of more modern land. They are again interconnected by dup­ specification with cut dielectric thicknesses licate 10-kV feeders and the control at laid at later dates. Leyland is linked by duplicate 10-kV Future development of the company’s feeders from the Ribble power station of the mains system may follow similar lines, but Preston Corporation Electricity Department, the existing 33-kV network readily allows from which point again additional 10-kV fo r 66-kV feeders to be added to provide cables are taken into the Lancashire Electric power, iD bulk, from the Kearsley station Power Co.’s area of supply. to any of the control points and development From the above main controls duplicate along these lines is planned. These proposals 10-kV feeders are taken to substations and provide for stepping up transmission voltage transformer kiosks to provide l.v. supplies, on the duplicate feeders from Kearsley power pole transformers serving isolated houses and station to No. 10 control, and later for these farms. A number of 3-kV feeders is also d up licate 66-kV feeders to be extended from used to supply certain rural areas. L.v. No. 10 control to No. 11 control to reinforce distribution is dealt with by underground the more distant fringes of the present cables and by four-wire overhead distribution. 33 - kV development and to allow for future 33-kV extensions in a westerly and north­ westerly direction. The 11-kV mains system provides the supplies required by the in­ dustrial power users and the distribution networks, and to meet these needs 452 sub­ stations have been erected as well as a considerable number of kiosks and pole transformers. In every case an effort has been made by the company Interior of Bow Lane substation, Leyland to ensure that the substation harmonizes with its surroundings. During the past ten years about forty For the purposes of mains and distribution substations, kiosks and pole-mounted trans- 7 2 2 E l e c t r i c a l R e v ie w Novem ber 8, 1946

formers have been provided to deal with The above arrangements provide adequate y various forms of supply, while the length of for operating the system under all con­ 11-kV and 3-kV transmission lines has been ditions. Duplicate feeders are provided in increased from 122 to 169 miles, l.v. dis­ certain instances and a system of ring mains tributors now extending a distance of 386 is established wherever this has been practic­ m iles, 138 m iles m o re than in 1935. T h e able. In parts of the district 3-kV distributor number of consumers connected in this area mains are installed where the anticipated during this period has increased by over loading conditions do not justify the estab­ 75 per cent, the total now being about lishment of a 11-kV main distribution. 20,000. Large consumers are supplied from the The main distribution in the Ormskirk 11-kV system at substations on the consumers’ district is at 11 kV, supply to the main prem ises. control at Ormskirk being provided by the The networks are supplied at 400/230 V, Central Electricity Board on two 33-kV 3-phase, and in most cases there are either feeders in parallel through two 7,500-kVA five-core cables or five-wire overhead lines 33/11-kV transformers and distributed to in order to provide for street lighting. Here the western portion of the district at 11 kV. again the main distributors are, wherever Supply to the eastern portion of the district possible, interconnected between substations, is from the company’s main distribution by and ring mains are established in order to three 11-kV feeders. provide alternative supplies. The whole of the system is interconnected To-day there are no villages of any size so that it is possible to transfer load as in the company’s area without supply. The required and also provide adequate alterna­ only small villages or hamlets yet to be tive supplies. An example of this flexibility connected are four groups of property each is illustrated by Hanging Bridge substation, consisting of between forty and sixty premises where there are four feeders, each of which within a radius of \ mile, and six groups of may provide an incoming supply for dis­ property each comprising over twenty-five tribution on the three remaining circuits. but fewer than forty premises within a radius The substation is equipped with a 11/11-kV, of J mile. One of the above groups is star/star 1,000-kVA transformer fitted with now being dealt with, and most of the on-load tap changing, with a by-pass arrange­ remainder will be connected as soon as ment so that the transformer may be made material and labour are available, provided “ dead ” for maintenance requirements with­ there is a wholehearted response to a out interrupting supply. canvass. Other property in rural areas not Control of the main distribution is pro­ connected comprises isolated farms or very vided by means of three 1/1 transformers small groups of farms and property. Few people realize that it costs four or five times as much to reach the average con­ sumer in a rural area as it does in a town, even making due allowance for the fact that underground cable in the town costs more than the Control station (33-kV) just completed at W rightington overhead construction

and four main control points. This ensures The costliness of the'‘S L S S ’S f S that if a fault occurs on the 11-kV system the fault conditions are limited to the Farm,F .r ifiHdesiey,h,heT Hesketh. The r nearest °f habitable £ £ Ormskirk district and are dealt with by the property to the farm was 1,700 yd awav local staff without involving any other and the premises were 2,000 yd from tJ' district in the company’s area of supply. fringe of the company’s l.v diciriu To provide for sectionalization, 11-kV line mains. To extend from the l.v. m!d ” switches are installed at various key points ordinary distribution pressure over a |B a/ . on the feeders. o f 2,000 yd would not have provided^an 723 November 8, 1946 E l e c t r i c a l R e v ie w adequate or usable supply at the farm. So this supply, 31 miles of e.h.v. or h.v. feeders the company decided to extend its 11-kV have to be maintained between Kearsley mains 900 yd from the Hesketh Bank station power station and Ribble Bank Farm. (admittedly this would be required at some distant future date in the normal course of development), and provide a transformer kiosk at the termina­ tion of the above main (to utilize the supply both for l.v. distribu­ tion and h.v. supplies beyond, which might develop on the fringe o f the area in question), Cable laying plough in action a 2,240 yd h.v. cable service from the kiosk to the farm, and a We have to thank the management and house transformer at the farm. The total staff of the company for the assistance we expenditure involved was £3,142 with a very have received in the preparation of this and small return. Furthermore, to transmit the previous article. Bratlford Salary Decision Tribunal Rejects E.P.E.A . Claim

EFER EN C E has already been made in the per annum). Salaries paid to other Corporation R Electrical Review to the adverse finding of officials were mentioned and the Corporation the National Arbitration Tribunal in the claim submitted that Mr. Carr was aware on accepting brought by the Electrical Power Engineers’ the appointment that the terms and conditions Association that Mr. E. H. Carr, city electrical did not comply with the 1941 agreement. engineer, Bradford, should be paid according to Moreover it contended that the National Joint the scale of the National Joint Committee of Committee was not empowered to make any Local Authorities and Chief Electrical Engineers. agreement and that in any case the method of Representatives of the parties were heard at computing salaries under the agreement was a sitting of the Tribunal on October 15th. inappropriate as it failed to take account of Statements were made regarding the constitution individual qualifications and responsibilities of and operation of the National Joint Board of chief electrical engineers. Employers and Members of Staff (Electricity The E.P.E.A. contended that there was no Supply Industry) which covered the conditions recognized or generally applied method of and salaries of technical engineers up to and computing the salaries of chief electrical including the grade of deputy chief engineer engineers other than that provided by the and on which the Bradford Corporation was agreement. The Central Electricity Board represented. Reasons were given for deciding recognized the applicability of the agreement or to omit chief engineers from the scope of the was paying salaries not less than the appropriate National Joint Board and evidence was pre­ ones which the agreement laid down. Evidence sented giving the history of the negotiations was given of the extent to which the agreement leading to the formation of National and had been adopted by local authorities. District Joint Committees of Local Authorities On the other hand the Bradford Corporation and Chief Electrical Engineers and the adoption showed that many of theTarger local authority of a salaries agreement in 1941. undertakings, both in Yorkshire and in other It was shown that no District Committee parts of the country, had not adopted the was formed for the No. 2 (Yorkshire) area agreement. It was mentioned in the course of until July, 1946. Mr. Carr was appointed the proceedings that the maximum salary deputy electrical engineer and manager at payable to Mr. Carr as provided by the agree­ B ra d fo rd in Septem ber, 1941, and as electrical m ent was £2,371 per annum. engineer and manager in April, 1943. The In its aw ard (N o . 883, Stationery Office, Id .) present salary applicable to his appointment the Tribunal states that having given careful was said to be £1,700 per annum on a scale of consideration to the statements and submissions £1 500 rising by annual increments o f £100 to on behalf of the parties it finds against the £2,000 (plus cost-of-living bonus of £36 16s. claim and awards accordingly. 724 E l e c t r i c a l R e v ie w Novem ber 8, 1946 Views on the News Reflections on Current Topics

NCE regarded as an astronomical proportion of the cost is debited to power O curiosity, sunspot activity has become (as against flood control and irrigation). of serious practical significance owing to its All this leaves room for differences of effect on wireless communications. There opinion between the “ pro ” and “ anti ” seems to be no evidence that it influences the parties. Engineering considerations come weather, as had been supposed by some, but into the other argument— that a dam designed fading of long-distance wireless transmission for power generation is unsuitable for has been attributed to absorption, instead of effective flood control. The Authority was reflection, of short radio waves by the forced to employ a compromise which, it is ionosphere. Here the disturbing factor is claimed, serves no useful purpose well. It ultra-violet light which, with the emission of is feared that such tactics might be adopted wireless waves, accompanies an uprush of in this country but I doubt, as I have said gas from the sun’s interior to form on its before, whether there can be anything surface (relatively) dark patches of electrified remotely resembling the T.V.A. here, in particles, usually in pairs of opposite polarity. spite of vociferous advocacy. That aurora and other magnetic manifesta­ tions are connected with periods of maximum activity of sunspots, which occur at intervals I see from the Chatham News that while the o f a b o u t 11 years and 4 months, is well ratings on the cruiser K e n y a are “ having established by observation. So is the con­ their food cooked in the latest electrically nection between these and recent irregularities equipped kitchens, the captain and his officers in radio communications everywhere, of are having their three-course dinners sent which, it has been suggested, the circum­ up from a galley which still uses the old- stances of the recent air-liner disaster in fashioned oil-burning cookers.” Other im­ Newfoundland offer an example. provements installed for the benefit of the • * * lower deck include an electric laundry. I am reminded of W. S. Gilbert’s good ship But for the commercial risk which the Mantelpiece and her kindly commander, B.E.T . was willing to take (and municipalities Captain Reece, R.N., who told his crew: were naturally precluded from taking) in “ By any reasonable plan I’ll make you providing electricity supplies and tramways happy if I can, in the smaller towns, the inhabitants would have been long deprived of two outstanding M y own convenience count as n i l : it is my duty and I will.” social benefits due to technical progress. The close association of small companies made the analogy of swings and roundabouts applicable to the exiguous or negative Mr. W. E. Lawton, chairman of the profits almost inevitable in those early days. Electrical Machinery Traders’ Association, Ultimate success probably owed much to the has shown me some pamphlets which he power of initiative devolved on local engineers picked up during his visit to the recent in the management of their undertakings Prague Fair. They were put out by the within the broad framework of a policy Skodawerke the large Czech armaments which they themselves had helped to devise. concern, and illustrate (with full details in English) a wide range of motors of various * * * ypes, from 0-25 to 230 H.P. These appear Another pamphlet on the Tennessee to be of good design and are made to accepted Valley Authority’s scheme has reached me. specifications-,nduding British Standards It is a well-illustrated production devoted Mr. Lawton found that Bata’s, the boot and to proving that the scheme is not only shoe manufacturers, were also producing uneconomic but actually dangerous. As motors. Deliveries appear to be long-dated has been contended before, it is considered however, and much of the production is for to be uneconomic because it pays no Federal Russia whose influence in Czechoslovakia taxes and only token interest— said to be Mr. Lawton says, is very marked in nil a b o u t 0 1 per cent— and an insufficient directions.— REFLECTO R. Novem ber 8, 1946 E l e c t r ic a l R e v ie w 7 2 5 Future of Electricity7 Supply Some Dangers Which Must be Avoided MSI fW^HE purpose of this Government should have a ios). article is not to argue By a Special Correspondent debate in Parliament on the S«f the merits or otherwise of whole policy of nationaliza­ anf any scheme for the nationalization of the tion. The Minister of Fuel and Power has toa electricity supply industry. That issue is made it abundantly clear that he intends to mainly a political one and it will be settled carry out his Party’s programme, and in this by Parliament. Arguments are taking place democratic country he is fully entitled to do in the Press, and later they will take place in so whether the programme be good or bad. ¿15 Parliament, on the desirability for this drastic Having agreed with the Minister thus far ISi !; type of reorganization. A t the moment it may we feel that a few words of warning should be aisçK be helpful if the following comments are given to him. It is often said that Mr. avts m a d e :— Shinwell finds it difficult to suffer fools gladly. ® i n (1) Anomalies have existed in the industry W e would therefore ask him to accept our tes.- for many years past which the industry itself assurance that these words are written in no , has unfortunately been unable to remove by spirit of foolish bickering, or with any idea voluntary methods. of making his position more difficult than (2) The industry has never been united on it is already. Pin-pricking is not the purpose niea any of the main proposals for reorganization of this article, and in any case it is not a i " f e — the M cGowan Report or the multi-coloured profitable occupation where Mr. Shinwell is skcffiaj memoranda submitted by concerned. teoSies the various associations in This article is addressed both Since the decision was inerssE 1943-44. to the electricity supply indus­ taken to nationalize the coal i tis di- (3) The Labour Party has try and to the Minister of Fuel industry there has not been Oita b for some years past had in and Power, counselling them the improvement in output fit of the view, as part of its to so arrange matters that or in the mental attitude liy. la® legislative programme, the under nationalization the public of the miners which ood ship nationalization of this in­ will be given the best possible many people had hoped service. fflMBH, dustry; and it has always to see. There may be crew: been open for the opponents good reasons for this late yo» of nationalization to raise their objections. lack of improvement but we mention the (4) Even in the days of the wartime Coali­ point to show that the mere act of nationaliz­ nil: its tion Government it was reported to be the ing an industry does not automatically bring Government’s intention to introduce a greater an improvement in its efficiency or in the measure of public control into the industry; spirit of the people working therein. Indeed, and ultimate public control has been the it may never do so. W hat guarantee has Mr. Shinwell that by nationalizing the electricity of the national policy since 1882. ociation, (5) At the General Election in 1945 the supply industry he is going to remove the Labour Party asked for a mandate, inter alia, existing anomalies and increase the general hich hf to nationalize this industry, and, whilst they efficiency ? Although weaknesses un­ : recent did not obtain a majority of the votes cast at doubtedly exist in the industry there can be by the no doubt about the enormous progress which nameiffi the election, they obtained an overwhelming majority of seats in the House of Commons. has been made during the past twenty-five stails in It is useless to argue that the average elector years or the splendid way in which supply various knew little and cared less about the organiza­ undertakings met the demands and faced the appear tion of electricity supply. Under our par­ emergencies of war and enabled the nation ccepted ticular political system the Government now to win its life and death struggle. The main □dards. has the right to nationalize the industry if cause of this success was not merely the otani it so desires, provided it obtains the reliability of the electrical plant or the ex­ I ucing necessary support in Parliament. cellence of organizations in different parts of fated, In view of the above facts it is somewhat the country. To those of us inside the in­ is for late in the day to argue that it is against the dustry it has long been apparent that the aida, national interest to nationalize the industry keenness of individuals and the spirit of all or that before introducing its scheme the adventure which have always existed in our 7 2 6 E l e c t r i c a l R e v ie w Novem ber 8, 1946 midst have been more responsible for our incurred without the consent of some ou i progress and success than any schemes of body. A modest increase of 2s. 6d. pe> wee organization; and one of the greatest dangers in the salary of a junior typist c a n n o t be p ai which Mr. Shinwell faces is the destruction without higher approval. This kind ot thing of the enthusiasm which has animated us in may conform to the traditions of the Civil the past. Service, but it will be disastrous in a business Nothing is easier than to make a blue print like that of supplying electricity. of an organization for an electricity supply Danger of Political Influence undertaking. It can be done by people with no experience of electrical matters and it can The number of regions to be created by be quite unworkable. Mr. Shinwell should the Minister is not yet known, but it will ask himself whether his scheme, which may probably be between fifteen and thirty. seem to be ideal on paper, is likely to damage Assuming for the moment that each Regional in any way the goodwill and the enthusiasm Board will consist of six members, it will be which have for so long existed in the industry. seen that great patronage will be in the hands In the course of his questioning he should of whatever Minister is responsible for making ask himself and his colleagues what are the the appointments to these Boards. Hence chief requirements to make certain that this the danger is likely to arise that political industry shall continue to be progressive and influence will creep into the industry. Each efficient, and the people working therein still successive Government will be tempted to energetic and keen. Speaking from the inside remove from office people who may have we would suggest a few of these requirements incurred its displeasure in previous years in and we would urge the Minister to pay some order to make room for others who have a regard to our comments. more sympathetic political outlook. It is here that there is likely to be the greatest Dynamic Business Enterprise cause of dissatisfaction and disaffection Supplying electricity to millions of homes amongst the responsible members of the throughout the country, to farms and ind ustry. factories, and for innumerable uses, is a The engineers and the commercial ad­ dynamic business enterprise requiring expert ministrators will work cheerfully and ener­ knowledge and a wide technical and business getically under Boards composed of able men experience. As conditions vary in different who are chosen because of their knowledge parts of the country there should be a very and experience in dealing with problems large measure of regional control. Any which have to be confronted; but there will attempt by the Minister to bring the industry be a sullen resentment if seats on these Boards under the control of Whitehall will lead to are given to men whose main qualifica­ confusion, delay and dismay. There must, tions are that they have not been too success­ of course, be a central co-ordinating body of ful in other walks of life, or are thought to some kind, but each region of the country— be deserving of some reward for past political we are assuming that Regional Boards will be services. Equally unfortunate will be the created— should have a considerable degree effect of appointing inexperienced people to o f r e a l autonomy. In Lancashire, for represent workmen or customers or some example, they have problems which differ group of town councils. By all means let from those in other parts of the country, there be machinery created for liaison between and they speak with a bluntness and an accent the Regional Boards and local authorities, which is peculiarly their own. To make the employees and customers; but let the men supply of electricity in Lancashire subject in upon whom the great burdens of the future all things to the control of W hitehall will not will rest be chosen solely because of their be a happy policy; and one cannot envy a ability to deal with the administrative, gentleman with a correct Oxford accent being technical or financial branches of the industry. sent up North to tell them how to run their Rewarding Ability business. An equally important freedom which the Again we emphasize that unless the Govern­ industry should have is freedom from ment s scheme makes this a certainty rather Treasury control. Such control can be than a possibility, it will lead to inertia and deadening and also irritating beyond words. perfunctory work on the part of those people It is notorious that at the Electricity Com­ who will have to carry on from day to dav mission, for example, no expenditure can be Nothing can be more disturbing or depressing November 8, 1946 E l e c t r i c a l R e v ie w 7 2 7

4 to people in a technical and competitive wishes, as we are confident that he does, to eel business— we hope that a little competition maintain and even increase the efficiency of pit will be left to us—than to live in an the industry in any scheme of reorganization, atmosphere of political uncertainty and he will do well to be sympathetic to the views Civ; intrigue. Another matter already causing herein expressed. The fears may be un­ an® grave concern is the question of the salaries founded, but that is no reason why they which will be paid under the Government’s should be ignored. scheme. Are these salaries to be fixed by There is no large measure of ill-will in the some Government Department whose mem­ industry towards the Minister, but rather the iWl bers possess neither professional qualifications reverse. Whilst there are a few people who . lit, nor a wide business experience, or are they are so opposed to the whole of the Govern­ i Ur to be fixed according to the scales generally ment’s policy that they would prefer the RfSfl: adopted throughout British industry ? In electrical industry to go to pieces rather than ¡11 other words, are the people with the best see it progress under nationalization, most of ibek brains to shun electricity supply, because of us wish to see it serving the community with Mmt its restrictions and niggardliness, and go to ever-increasing success. W ith his large Parlia­ ms other industries where the rewards are more mentary majority Mr. Shinwell can force l pot generous and the scope for advancement and upon the country almost any scheme he 1?. Ee adventure more promising ? chooses to father. Those of us who have i[ii The Minister should know that the above spent our working lives in helping to build may b misgivings are not merely those of the w riter; up the great electricity supply industry hope B ja they are widely held throughout the industry that the Minister’s scheme will be a workable (kite by thoughtful people amongst both munici­ one and sufficiently sound to avoid the x i1 palities and companies. If Mr. Shinwell dangers mentioned in this article. hi (16! disfe SIS of: CORRESPONDENCE m i l Letters should bear the writers' names and addresses, not necessarily for publication. and c. Responsibility cannot be accepted for correspondents' opinions. ifaHes t o i Razors in Bathrooms exempted from earthing under 1001 (A) (IX), but the heads on most of the razors I prols M S more goods become available, the have examined cannot be fairly described as t theiei electric razor will, no doubt, shortly be separated by non-conducting material from ieseBoc seen in large numbers. Unfortunately, many current-carrying parts in such a way that in qualii people will insist on using electric razors in normal usage they cannot become alive. 30 W their bathrooms, even though this is quite What is “ normal usage ” and what task unnecessary and against all competent advice. happens if the razor is dropped, dislodging it polk Old habits die hard, and we must face the an internal part, or if the whole thing gets ill It: fact that large numbers of these appliances splashed with water ? peopk will be used in these circumstances in the A refusal to carry out the work only leads or st future. to the job being done by a possibly incom­ means The dry shaver presents a pretty problem petent and certainly less conscientious mbeWi in earthing. Many of them are fitted with a person, or worst of all, the appliance is fitted uthorin thin waterproof two-core flexible, but let us with a* b.c. adaptor and plugged into the t the d hope that in the future they will not be sold bathroom lamp-holder. the# without an earthing conductor. I should be very interested to hear the ; of tk Whether or not this hope is realized, what opinions of other readers who have had nistnc is the best and safest method of installation ? experience of this problem, and who have lind usr Is one to install a 5- or 15-A B.S. three-pin switch socket with fused adaptor, thus solved it successfully. inviting the use of other appliances in the E d g w a re . J o h n B l a n d . bathroom ? If the obsolete 5-A two-pin is Gove Unsafe Installations tyrati installed solely for the use of the razor, it .will irfia £ not admit the plugs of other apparatus, but •W W O ULD like to see Rule 1108 of the on the other hand, it is a contravention of spee': I.E.E. Regulations brought into practice. I.E.E. Regulation 1001 (Eleventh Edition). This would naturally take some time, but if to it The cutting heads of some razors may be jresi a move were made by the contractors and 7 2 8 E l e c t r i c a l R e v ie w Nor ember 8, 1946

the contractors’ associations, then it would Load Test— Complete Dinner ” is in line with be up to the Supply authorities to give them the gas Standard, but again is not very precise. the necessary backing and co-operation Although weights and sizes of meat are which would make the scheme workable and given there are no definite means of deter­ effective. mining if it is cooked. In the gas Standard The adoption of the rule involves a con­ a definite minimum temperature rise is called siderable amount of pioneer work, but those for, this being measured in the centre of the who have the interest of the electrical industry m eat. at heart will agree that it is time a halt was For potatoes the maximum weight of each called to indifferent installation work and only is stated, so it would be possible to use appliances. Persons deliberately not- wiring small pieces, which would cook through more to the I.E.E. Regulations should not be easily, whereas in the gas Standard both allowed to practise. minimum and maximum weights are laid S p a ld in g . L . A d l i n g t o n . d ow n . In the electric Standard no time is School Lighting mentioned for the test for Yorkshire pudding. 1 1 JE have read with interest Mr. G. V. In Appendix “ B ” under “ Complete Dinner ” Downer’s letter in your issue of it is stated that “ the rice pudding is to be October 25th and would like to add our omitted if rice is unobtainable,” and no protest against the danger to schoolchildren’s mention is made of a substitute for it; surely eyes of excessive lighting and the additional these conditions make it hopeless to use as a cost to the ratepayers. S ta n d a rd . The gas Standard states a There is another factor of interest to house­ maximum time for the whole and separate wives who dread the potential threat of less item s. electricity when it is being wasted in excessive As I see it, the electric Standard is worth lighting as demanded by fluorescent lighting. very little as it can be interpreted differently L o n d o n , W. B . M . Y o u n g , by every cook or person competent to judge. Se cre ta ry , Finally, I would suggest that a Standard The Women’s Guild of Empire. is required for “ Cooking Tests for Domestic [The illumination values' prescribed are the Ovens ” which should include electric, gas, lowest that leading authorities consider can be oil and solid fuel, for surely the housewife used without risk of eyestrain due to inadequacy expects the same performance from all, of light when reading small print over extended although the manipulation may be different. periods. One advantage of fluorescent lamps E.G. is their low surface brightness, which is very considerably less than that for which shielding Registration of Engineers and other precautions are legally required in was interesting to read your editorial factories, for instance, in order to avoid harmful I T comment on “ Registration of Engineers” glare. Since fluorescent lamps consume less in your issue of October 18th. The arguments than half the amount of electricity taken by gasfilled lamps to give the same light, the in favour of establishing a definite status for question of waste does not arise. Even if the the qualified engineer have already been cost were more, the. addition would surely be stated many times, but I should like to raise worth while in the circumstances.— Editors, the question of the method of achieving this Electrical Review.} result. Standard Baking Tests • Cannot the main professional engineering institutions of this country set up a joint M S a designer of both electric and gas committee to consider the matter and prepare domestic cookers I find B.S. 1315 (Pt. 1), proposals in draft form for submission to Domestic Electric Ovens, very disappointing the Government? While agreeing that the in comparison with B.S.948, Cooking Tests advocates of this idea may have, to use your for Gas Ovens. own words, a “ hard row to hoe ” the main Cooking tests for scones, small cakes, thing is to get some concrete proposals on sponge sandwich and rich fruit cake are paper. May I therefore suggest that all almost identical in the two cases, except for engineers interested in protecting their pro­ the “ Result of Test.” Taking scones for fessional status should write to their institu example, definite minimum values are given* tion pressing for this matter to be given for gas, but the electric Standard depends on attention and for steps to be taken on a the persons judging, and this at once intro­ united front to achieve success. duces many variable factors. The “ Full- Hampstead, N. W.3. G. E. B. White N ovem ber 8, 1946 E l e c t r ic a l R e v i e w 7 2 9 PERSONAL and SOCIAL News of Men and Women of the Industry

I M E Central Electricity Board has appointed was made by Mr. T. Dyke, joint secretary of the Mr. W. B. Noddings, M.Eng., A.M .I.E.E., company, who had served as chairman of the to be deputy commercial manager in place of the Well-Wishers’ Club throughout both world late Mr. J. B. M. Gubbins. Mr. Noddings, who wars, and the piano was received by Mr. Leslie has been assistant com­ Gamage, vice-chairman and joint managing mercial manager for the director, in his capacity as chairman of the past two years, joined Social and Athletic Club. Mr. Dyke said that the Board’s staff in 1928, between 1939 and 1946 the Well-Wishers’ Club having previously held had raised over £9,500 and had sent out more an appointment as than 41,000 parcels. After the presentation the assistant engineer with company was entertained by brief piano Merz & McLellan. He recitals by Miss A. E. R. Jones, Mr. A. J. is a graduate o f L iv e r­ Burbidge and Mr. V. J. Sanders. pool University, where Ten members of the Barnsley Electricity in 1923 he took the Department staff who have retired during the B.Eng.(Hons) degree past twelve months between them total four with first class honours, hundred years of service. Mr. E. A. Barker, and he received his early the borough electrical engineer, Mr. J. A. Burton, Mr. W . B. Noddings training with Metro- station superintendent, and Mr. W . Sugden, politan-Vickers. turbine driver, each had forty-six years’ service The Bingley Urban District Council has con­ to their credit, while Mr. A. Atkinson, a labourer, firmed the recommendation of the Salaries and could claim no fewer than fifty. Wages Committee to .increase the salary of As announced last week, Mr. Basil R. Vickers, Mr. 0. G. Cook, A.M.I.E.E., chief electrical of the Manchester Corporation Electricity engineer and manager, by an amount equivalent Department, has been appointed by the British to the scale as recognized for chief electrical Electrical Development Association as its Area engineers. The Council has also adopted the Officer in Scotland with scales of the National Joint Council for Local headquarters in Glasgow. Authorities, Administrative, Professional, Throughout the war Technical and Clerical Services. M r. Vickers, who is Mr. W . J. Collins, at present acting deputy thirty-four, served as an electrical engineer with the Bromley Corpora­ electrical officer in the tion Electricity Department, has been appointed R.N.V.R., and attained deputy borough electrical engineer at Tun­ the rank of lieutenant- bridge Wells. Mr. Collins takes up his new commander. After being post on December 1st. engaged on mining and mine-sweeping duties, he The Stockton-on-Tees Corporation has was for two years a increased the salary of Mr. N. Hunter, M .I.E.E., liaison officer with the the general manager and engineer of the Russian Navy to which M r, g, r. vickers electricity undertaking, by £150 per annum. he was technical adviser Mr. C. H. Neale has resigned his appointment on mining, minesweeping and torpedo problems. as director and has severed his connection with Mr. Vickers, who was educated at the Grammar Tanjon (Newcastle), Ltd. School and Technical School, Stockport, and Cardiff Corporation Electricity Committee the Manchester College of Technology, joined has appointed Mr. G. J. Higgs, of Llantwit Major, the Manchester Corporation Electricity Depart­ as assistant sales engineer at a salary of £521 per ment in 1929 and latterly has specialized in space annum. heating, industrial heating and large-scale cooking problems. Since his return from the A large crowd of G.E.C. employees who have Navy Mr. Vickers has been engaged on a pro­ returned from the Forces, and members of the posed district heating scheme for a new housing wartime Well-Wishers’ Club who kept them estate. supplied with parcels throughout their service, met at Magnet House, London, on October Mr. T. H. Skelton, manager of Edgar Allen 23rd to see the presentation of a grand piano & Co.’s Electric Melting and Tropenas Steel to the G.E.C. Social and Athletic Club. The Converting and Foundry Heat Treatment piano had been bought with the balance remain­ Departments has retired, for reasons of health. ing in the Well-Wishers’ Fund, the amount being He joined, the company in 1901 and when in brought up to the required sum by subscriptions 1909 the first Heroult electric arc furnace to be from G.E.C. ex-servicemen. The presentation erected in this country was installed M r. Skelton 7 3 0 E l e c t r i c a l R e v i e w Novem ber 8 , 1946

took charge of it, becoming responsible, as the Association to the welcome extended by the use of the electric furnace process developed, for chairman, Councillor Sinfield. An indication all the steel produced in this way. At the of the development of the undertaking is given beginning of 1919 he became permanently by a comparison of the number of personnel responsible for the production of all steel for the twenty-five years ago and the number now steel foundry. Mr. Skelton, who is sixty-one, em ployed— 462. will be succeeded by Mr. W. H. Everard, Mr. S. M. Harris, O.B.E.,. sales manager of who has been with him for thirty-two years. T.M.C.-Harwell (Sales), Ltd., has been Mr. Skelton will still be available as a consultant. appointed to the board as sales director. Commander T. D. Galbraith, R.N., M.P. has Mr. A. J. Robinson, manager of Christy Bros been appointed a director of the Clyde Valley & Co., Ltd., and the Aldeburgh Electric Supply Electrical Power Co., and of its three subsidiaries, Co., has retired and he has been presented with the Lanarkshire Hydro-Electric Power Co., an armchair by Mr. Frank Christy, chairman, the Strathclyde Electricity Supply Co., Ltd., on behalf of the directors and staff of the Alde­ and the Clyde Valley Accessories, Ltd. burgh and Chelmsford Companies. Mr. Robin­ Mr. M. I. Lipman, M .B.E., general manager son has been with Christy Bros, since 1899, and of the Special Products Division (Government has been m anager at A ld eburgh since 1912. Mr. contracts, Thermovent heating, car radio) of W . E. Wisbey is succeeding him as manager at E. K. Cole, Ltd., relinquished his position with A ldeburgh. the com pany on O ctober 31st. The Midland branch of the Association of Bury Electricity Committee has recommended Mining Electrical and Mechanical Engineers the appointment of Mr. J. Mills, deputy electrical held its annual dinner in Nottingham on engineer and manager of the St. Helen’s Cor­ October 26th. Mr. R. E. S. Mills, branch presi­ poration electricity undertaking, for the position dent, presided, and the chief guest was Mr. C. of engineer and manager at Bury, at a salary of Charles Bleach, national president. Mr. A. W. £1,208, rising to £1,422. For six months there Williams, past national president, said that in has been controversy over the salary for this 1922 the Midland branch had fewer than 100 appointment. members, but to-day there were 700, and they were the second largest branch in the country. Mr. C. W . Saddington, burgh electrical engineer, Oban, retires on November 15th on super­ Mr. W . Heald informs us that he has termin­ annuation. ated his contract with the Sun Electrical Co., Ltd. Mr. Heald has been with the company Miss Caroline Haslett and Miss Vera Norvick, for eighteen years, apart from war service in director and assistant secretary respectively of the R.A.F., and latterly has represented the the Electrical Association for Women, have been company in the counties of Hampshire, Bed­ appointed members of a National Advisory fordshire and Oxfordshire. Council which the Ministry of Labour and National Service has set up under the chairman­ Mr. A. Everett, who has been employed by ship of Miss Violet Markham to advise the Claud Hamilton, Ltd., for fifty years, has been National Institute of Houseworkers on any presented with a cheque by Mr. A. J. Ferguson, questions relating to the supply of, or the chairman of the company. The staff has demand for, domestic labour that may be presented him with a wallet and an electric clock. referred to the Council. Miss Norvick has just returned to England after three months in the O b itu a ry United States and Canada. Mr. Richard G. Botting, manager and director Twenty-five years ago there were only seventy- y ', Aberdeen Electrical Engineering Co., five employees at the Luton Electricity Works, ,Street’ Aberdeen, died on but of those twenty-one are still with the October 27th. Among contracts carried out undertaking and there are eight others on the w aiHlnV ''^ re , electrical installations at the retired list with twenty-five years’ or more service. Therefore, nearly 40 per cent of the home°ofhome of the n Duke v of r T Richmond ’ and at and G°°dwood, Gordon. employees in 1921 have spent twenty-five years Mr. James Ford, chief clerk of the Electricity with the undertaking and this fact was recog­ nized recently at the opening of the Sports and Social Club’s new premises, when members Board since January, 1934 died at h u I were welcomed to the Long-Service Association. Danesmoor, Old Hall Mnt, 1 h,s h° me’ The longest service was that of Mr. Dorrington, Chester, on O ctober ’ 24th a r ’ t h T “ ^ f the present power station superintendent, who fifty-nine. A native of Burv Lancs h*^' ° i has been with the undertaking forty-four years, the Bury Corporation staff’as a yout^anl the next being Mr. Gregory, chief clerk, and passed through the various denar, Mr. Chandler, meter superintendent, both with finally becoming chief clerk “n the EU ?® " ’ thirty-eight years’ service. Mr. W . H. Cooke, Department. He joined the staff formerly chief engineer, who was with the Stalybndge Board in January 1934 u the undertaking from 1901 to 1939, replied on member of the Committee of the North " w ! behalf of the members of the Long-Service Centre of Electricity Supply A d n X r S November 8, 1946 E l e c t r i c a l R e v ie w 731

ssociation and all his life had been a member in smaller towns, apart from its pioneer work ° N A.L. g .O. The funeral service was held at in launching the County of Durham, S.W . and S. Mottram Parish Church on October 28th, and and Northmet companies, which were later the interment took place at Bury. transferred to other interests. Particulars given in “ Five Decades of the B.E.T.” showed that Mr. W . H. F. Colebrook.—The funeral took in 1945 there were companies in the group place at Andover recently of Mr. William 88 with a total subscribed capital of £30 million. Henry Frederick Colebrook, of Over Wallop, who assisted Marconi in his early experiments O f these only Gateshead still operated tramways at Bournemouth. Mr. Colebrook, who was (18 route miles). Electricity, 306 million kWh, born in 1873 and educated at Andover Grammar was supplied to approxim ately 107,000 con­ School, became station superintendent and sumers. Mr. Howley considered that there was chief assistant engineer to the Bournemouth & cause for disappointment in the Government’s District Electric Supply Co., Ltd. (now the proposals, in view of the fine record of the B.E.T., Bournemouth & Poole Electricity Supply Co., which furthermore was, in regard to its staffing, Ltd.) and in 1899 was appointed consulting and a “ happy house.” resident engineer to the Watford electricity Replying to the toast of “ Our Guests,” undertaking. He retired in 1931 but during the proposed by M r. J . S. W il l s (managing director), war joined the staff of the Wessex Electricity S ir F r e d e r ic k H a n d l e y P a g e deplored the Co. Shortly before he died Mr. Colebrook present influence of ideology without experience. presented his scientific and electrical apparatus Under socialism, he said, only a few men could to Andover Grammar School. come from the bottom to the top— the reverse of what happened under private enterprise. Mr. F. Twitchett.— The death has occurred at The health of the chairman was proposed by Benfieldside (Co. Durham) of Mr. Federick S ir J o s e p h N a l l , who referred to Mr. Howley’s Twitchett, Northern area manager at New- forty-seven years’ service with the company. castle-on-Tyne for the Splendor Lamp Co., Ltd. Mr. Herbert Taylor, rolling stock superinten­ dent to Darlington Corporation, has died at the Electricity Supply History age of fifty-nine. He had been at Darlington about thirty years and before then was with T the South Wales Institute of Engineers Bradford Corporation. A on October 22nd, Mr. C. G. Morley New (Electricity Commissioner) delivered the William Wills.— Mr. Thomas Richard Martin, of Rod- Menelaus Memorial Lecture. Mr. D. Ifor combe, Aston-sub-Edge, Chipping Campden, Evans, president of the Institute, was in the Gloucs., late a director of British National chair. Mr. Morley New first presented a Electrics, Ltd., and Archibald Low Electrics, masterly survey of the electricity supply legisla­ Ltd., and for many years associated with J. H. tion of this country, dealing in passing with the Tucker & Co., Ltd., who died on February reports of the various committees upon which 13th last, intestate, aged sixty-six years, left legislation had been based. He described £5,394 gross, w ith net personalty £5,078. in some detail the functions of the Electricity Mr. F. C. Curtis, founder and principal Commissioners and the operations of the Central of the Curtis Manufacturing Co., Ltd., left Electricity Board and the Scottish Hydro- £79,796 (net personalty £74,172). Electric Board. The next section of the lecture traced the rapid development of the industry, B.E.T. Jubilee due credit being given to the supply authorities themselves, the Electrical Development Associa­ W N celebration of its jubilee, the British Electric tion and the Electrical Association for Women. Traction Co., Ltd., held a dinner at the Technical developments were similarly dealt Savoy Hotel, W.C., on October 26th, at which with and Mr. Morley New mentioned the M r. R . J. H o w l e y , chairman of the company advantages which the industry had gained from from 1929 until June last, presided in the its support of the E.R.A. absence abroad of Mr. H. C. Drayton, the present chairman. S ir R o b e r t R e n w ic k , proposing “ The British Institution of Radio Engineers B.E.T.” expressed himself on principle as against any compromise in regard to nationaliza­ V E R Y representative gathering of scientists, tion, the tendency in favour of which he con­ A members of Government departments, the sidered a result of war strain. In the case of Services and the radio industry met at dinner at the B.E.T. it might take away 97 per cent of the Savo y on October 31st to celebrate what had been built up during the past fifty the 21st anniversary of the British Institution years. He regretted that the Conservative of Radio Engineers. The speech of the President, Party had not put forward a policy of “ de­ Admiral The Viscount Mountbatten, has nationalizing ” when returned to power. already been widely reported in the daily Press. In his reply the chairman summarized the The toast of the Institution was proposed by past history of the undertaking from its founda­ Sir Robert Robinson, President of the Royal tion by Em ile G arck e in 1896, when it was chiefly Society, and that of the guests was responded to identified with tramways and electricity supply by Professor Sir William Bragg. 732 E l e c t r i c a l R e v ie w Novem ber 8, 1946 Meter Design Advances in House-Service Types

H E trend in watt-hour meter design with After indicating that administrative aspects T some reference to the development of of the Electricity Supply (Meters) Act, 1936, indicating instruments was the subject chosen were open to criticism, Mr. Matthews by M r. L. J. M a t t h e w s (Electrical Apparatus referred at greater length to certain conse­ Co., Ltd.) for his inaugural address as chair­ quences of standardization which needed to man of the Measurements Section of the be considered. For instance, information Institution of Electrical Engineers. about actual short-circuit conditions, based It was pointed out that during the past on proper tests, would be most valuable in fifteen years the design and performance of relation to the proposed new method of house-service meters had advanced con­ rating meters. It was questionable whether siderably, especially in respect of prepayment the proposed extension of the loading range meters. Wartime production was reduced was really necessary for domestic services. to 5 per cent of the normal, but some research Therefore it might be economically unsound continued with considerable thought and to strive for greater accuracy throughout the discussion from which it was evident that extended range and M r. Matthews suggested meter practice was entering upon a period that when revising B.S.37 there should be of important change. more consideration of practical service The more enlightened treatment of meters requirements instead of squeezing perform­ in service was new and commendable, but ance to the lim it. Mr. Matthews regretted that some con­ Fewer Sizes sumers’ “ unit ” panels had been designed from too narrow an outlook and, furthermore, The proposed reduction of the number of an excellent opportunity of standardization different sizes to three c.m.r. of 10, 40 and had been missed. 80A had received much support. But the chairman’s graphical representation of the Improvements in Components proportions called for showed that 45 p er Turning to functional components, British cent of the demand was for the 25/50A size magnets were described as at least as good as and 40 per cent for a 10/20A rating. those produced in any other country. But The address concluded with a reference there was room for considerable improvement to the contribution made by instrument in casting to shape and finishing by grinding. engineers in general to the war effort, pointing Also methods of magnetizing and ageing out that whereas much had been said of the should be chosen to suit the different alloys. employment of radar, it was not so fully The E.R.A.-Shotter research into meter appreciated that instrumentation had made bearings constituted the greatest advance in the use of radar possible. meter practice during recent years. Most development work had been directed to the improvement of stability. Was there Edinburgh Electrical Society any other piece of commercial electrical /% [ a meeting of the Edinburgh Electrical equipment for which a comparable perform­ Society held recently, M r . H . E . P a r t r id g e ance was specified ? Whether compensation read a paper on “ Heat Transmission in Steam Boilers.” He referred to the im­ for ambient temperature, not yet general, was provements in boiler design which had reduced strictly necessary in commercial grade meters the weight of a plant to one ton for each ton of was perhaps open to question. steam per hour produced. Exposure of as Prepayment meters had developed notice­ much as possible of the boiler surface to the ably, mostly in mechanical respects. A radiant heat from the furnace and the mainten­ recent design of single-bearing synchronous ance of as high a furnace temperature as possible motor for actuating this class of meter was were essential features. Pulverized firing was not considered to have any advantages whatever for illustrated. There had not been any notable high-efficiency boilers. Finally the use of development in respect of polyphase meters, oxygen instead of air for promoting combustion but was it outside the bounds of possibility was suggested and it was claimed that such a that domestic loads might increase to the scheme would result in an enormous increase extent of justifying three-phase services ? steaming capacity for a given size of plant m Novem ber 8, 1946 E l e c t r i c a l R e v ie w 7 3 3 Southern Electrification F urther 284 Route Miles to be Converted

£15,000,000 scheme announced by Faversham via Canterbury to Dover. A the Southern Railway last week will (3) Tonbridge via Tunbridge Wells to involve the conversion to electric traction Bexhill and Hastings. of a further 284 route miles (610 miles of (4) The secondary line to Haywards single line track, including sidings) and the Heath and Brighton from South Croydon adoption of Diesel traction for subsidiary via Oxted, East Grinstead and Horsted services. Steam locomotives will thereby be K eyn es. completely eliminated on all routes east of (5) The secondary line from Horsham Portsmouth, that is, on the lines of the former via Steyning to Shoreham. London Brighton and South Coast and To-day the Southern Railway owns over South-Eastern and Chatham Railways. With 1,800 steam locomotives. When the pro­ 714 miles of its 2,156 miles of track electrified posed conversion is completed the number and 55 per cent of the total train mileage will be reduced to under 800. Approximately worked electrically the company already 70 per cent of the trains will be composed possesses, even before embarking on this of multiple electric units with an average new scheme, the largest electric suburban of 225 H .P. per coach, the remaining 30 per service in the world. cent being operated by Diesel and electric The new routes to be electrified in the locomotives. About 200 Diesel units of order in which they are to be carried 400-600 H.P. will be required and 150 electric out are :— locomotives. The latter will probably be (1) Sevenoaks via Tonbridge and Ash­ of generally similar construction to the two ford to Folkestone, Dover, Deal, Sand­ 1,500-H.P. experimental units which have wich and Ramsgate with the secondary been giving satisfactory service for hauling lines from Maidstone to Ashford, Maid­ freight trains for several years. Some higher stone to Paddock Wood, and Ashford via powered units of about 2,000 H.P. will be Canterbury to Ramsgate. required to give speeds up to 90 m.p.h. on (2) Gillingham to Margate and Rams­ the cross-Channel ferry services. gate with the secondary line from Electrification schemes already undertaken

All the Southern Railway’s routes shown above are already, or will be, electrified. (New routes shown by dotted lines.) Diesel traction will be used on the remainder 734 E l e c t r i c a l R e v ie w Novem ber 8, 1946

save about 400,000 tons of coal a year and meter and all the necessary instruments, the latest extensions, together with the with electrical braking and steam heating adoption of Diesel traction, will result in a equ ipm ent. further saving of 300,000 tons a year. Sir Energy is collected from the conductor rail Eustace Missenden, general manager of the by eight shoes mounted on each side of the Southern Railway, hopes that it will be locomotive and there is a pantograph mounted on the roof for coll ecting electri ci ty from overhead wires in certain sidings. The controller has twenty- six positions for con- trolli ng the voltage applied to the traction motors. Each func­ tion is a “ running ” position which can be used for any length of

One of the electric loco­ motives which the South­ ern Railway has had in r e g u la r s e r v ic e sin c e 1942

possible to start work on the scheme in time, thus giving very smooth acceleration six months’ time and that, provided that and a large number of “ running ” speeds. materials and labour are available, the work A novel feature embodied in the design of will be completed in five years. Additional the electrical equipment enables the loco­ light signalling will be required to cope with motive to continue to exert a drawbar pull the speedier and more frequent services when passing over the unavoidable “ gaps ” provided. Sixty new substations will have in the conductor rail which occur at junctions to be provided with the main one probably and crossings. at Canterbury. The present scheme is only the first stage in comprehensive plans for modernizing the company’s system and the use of more Senior Demonstrators’ Course powerful Diesel locomotives of about 1,600 Q N October 30th Mr. L. Silkin, Minister of H.P., perhaps in pairs, is already being Town and Country Planning, opened a three- contemplated for the West Country routes. day course for senior demonstrators and sales­ The two electric locomotives already in ser­ women in the electrical industry at the Connaught Rooms, London, W .l, organized vice were constructed at the company’s works by the British Electrical Development Associa- at Ashford and incorporate English Electric t'° n a" dthe Electrical Association for Women. equipment. Each machine is capable of M r Silkin said that the trend for population to dealing with freight trains of 1,000 tons in rift from the country to the town was disastrous weight and can also haul passenger trains at speeds of up to 75 m.p.h. The locomotive arrested' Om> ^ P6° ple and k had to be fn th ! ? WJly Was t0 Provide amenities consists of a box type cab carried on two in the countryside which would attract the six-wheel bogie trucks. Each of the six housewife and keep her there. To-day there axles is driven by an electric motor through was a great temptation to lower standards in order to put up houses quickly. He was being single-reduction spur gearing. urged to agree to the building of houses in most The box cab contains an electric boiler unsuitable places, and the electrical in d ^ ry for supplying steam for heating passenger was being urged to reduce standards He honed trains, as well as electrically driven compressors and exhausters for operating , t s s g i » * brakes. It also contains the electrical trend of the future would be for" more * a*nd more married women to work o u k i h u apparatus for controlling the traction home. A few households might have one Sr motors. At each end there is a motorman’s two servants, but the m ajority o f neoni«. driving cab containing his controller for employ a trained domestic worker for tw brake operating levers, together with speedo- three hours a day. 0 or November 8, 1946 E l e c t r i c a l R e v ie w 7 3 5 E.D.4. Conference Equipping New Houses. Cotton Mill Electrification. ijlPEA K IN G at a conference of the E.D.A. detailed the different types of permanent North-West Area at Preston last week on prefabricated houses which have been approved, the subject of “ Electricity in New Houses,” and urged that local housing authorities should M r . J. I. B e r n a r d , chief technical officer of the insist on adequate electric wiring and equipment Association, said that the introduction of the in all new houses. dual-heat principle, by which a small quantity of water was kept hot continuously and larger Conversion of Cotton Mills quantities were made available at the touch of a At the morning session Mr. R. H. Harral, switch, had brought about the lowest possible M.I.E.E., electrical engineer and manager, consumption of electricity for water-heating. Blackburn, spoke of the work done to bring Self-contained water-heaters of the dual-heat about the electrification of cotton mills and type, o f 20-gal capacity, were designed for factories by the E.D .A. Textile Sub-Committee, fixing under a kitchen draining board, and a of which he is chairman. Complete electrification considerable number of installations of this type of the cotton industry, he said, would save already in use were producing very satisfactory 750,000 tons of high grade coal to the value of results. Properly designed electric water-heating £1,875,000. The N .W . Area Textile Committee installations required a negligible amount of in a recent survey of 1,391 mills, found fewer maintenance and gave an automatic constant than 350 factories were completely equipped hot-water service in which the consumption of with electricity and 670 partly equipped. electricity was practically in direct proportion to the amount of hot water used. Mr. Bernard drew attention to the wide variety of electric fires, both portable and for Photography in Engineering wall-mounting, now available. For any part of C iO M E representative instances of the the house where additional background heating ^ value of photography in engineering were was required an electric convector heater could discussed by M r . P . P h il ip (Dundee electricity be provided—if fitted with a self-contained undertaking) in his inaugural address as chair­ thermostat advantage was taken of the savings man of the Scottish Centre of the Institution of so easily made with automatic control electric Electrical Engineers. The address was delivered heating. Suitable equipment for the all-electric at Glasgow, Edinburgh, Aberdeen and Dundee heating of a small dwelling consisted of and it represented work done partly as a hobby, fires in the principal rooms, together with one but mainly with serious intent, to make or two thermostatically controlled convectors records for systematic study, which had been providing background warmth throughout the of the utmost value relative to plant main­ ground floor; the hot air finding its way tenance, and for conveying accurate impressions upstairs would air the bedrooms. to others who were concerned with development work. Automatic Laundering The technique of photographic processes was Need for a wringer was avoided in the latest not of great moment to engineers, but the scope idea in home laundry equipment. The tub was and limitations of this means of obtaining run at high speed to remove most of the water permanent records were worthy of more than by centrifugal force. An automatic washing passing interest. Not only did it give the machine had been produced in which the whole observer a comprehensive idea of the subject sequence of operations— soaking, washing, recorded, but also deepened his knowledge of it rinsing and partial drying— was carried out by enabling him to observe details which had with no more trouble to the housewife than the not been evident in the limited time at his setting of a control dial. disposal for ordinary examination. Post-war electric cookers had been improved “ Photostat ” copying of drawings and by incorporating quicker oven-heating (thermo­ documents saved time, money and errors ; while statically controlled), facilities for simmering, cinematography was no less important as a and increased grilling and warming space. medium of education, research and salesmanship Elimination of corners and ridges had made than of entertainment. High-speed cinemato­ cleaning easier, while standard sizes had assisted graphy of events of short duration, stroboscopy the architect to utilize kitchen space to the full. and panchromatic photographic thermometry Referring to the wiring of new houses, Mr. were mentioned. Cathode-ray oscillography Bernard said that the problem of providing was explained in general terms and the similarity cheaply an adequate number of plug points to in principle of optical and electron micro­ ensure the convenient and safe use of electricity scopes for microphotography was commented had been largely solved by the introduction of on, the address terminating with references to an all-purpose fused plug. Mr. Bernard X-ray examination. 7 3 6 E l e c t r ic a l R e v ie w Novem ber 8, 1946 Reconstruction in Burma Hydro-Electric Possibilities

W M 7AR brought devastation to practically all mentioned that it was the largest body of its the towns of Burma, with the destruction kind in the world; the membership had now of the electricity supply systems. The Govern­ reached the 30,000 mark. Mr. V. Z. de Ferranti, ment of Burma realizes that the restoration of President of the I.E.E., responded to the toast; electricity supply is one of the country’s first In giving the toast of “ Electrical Exports, needs and it has appointed Mr. E. A. Logan, Mr. H. E. Midgley (Brush Electrical Engineering M.Sc., M.Inst.C.E., M.I.E.E., M.I.Mech.E., Co.) gave credit to Mr. V. Watlington, who has as chief electrical engineer and manager to just retired from the position of director of the carry out this work and put into effect a contem­ British Electrical and Allied Manufacturers plated nationalization- scheme. Association, for the way in which he had Mr. P. Nimmo (Electricity Commissioner) presented the electrical manufacturers export presided at a farewell dinner to Mr. Logan at case to the Government. They had got more the Waldorf Hotel, on October 29th and in or less what they wanted— in fact rather more. proposing the toast of “ Burma,” spoke from The speaker referred to the electrical manu­ his twenty years’ experience in that country facturers’ training schemes which had produced of the problems and opportunities facing Mr. some excellent engineers. It was men of this Logan. H e said that Burm a was as big as type who would help Mr. Logan in his work. France but had a population of only 15 millions. Replying to the toast, Mr. Watlington said The earliest and largest supply schemes were that electrical manufacturers found it difficult those in Rangoon and Mandalay but altogether to meet the demands made upon them. He there were about a hundred licensed under­ hoped that there eventually would be a greater takings most of which supplied power mainly exchange of goods between this country and for fans and lighting. Mr. Logan would have Burm a. the supervision also of electricity supplies to The health of the guest of the evening was mines, oilfields and other industrial under­ proposed by Mr. E. E. Hoadley (borough takings which had secured very good service electrical engineer, Maidstone) who said that from plant supplied by British manufacturers. Mr. Logan had drive and initiative and the Mr. Nimmo introduced Mr. Saw Tha Din, Government of Burma had chosen wisely. He a member of the Karan mission to this country. was another spearhead of Britain’s export trade. The Karans, hill folk, had maintained their Mr. Logan in the course of his reply said that independence through many political changes. he hoped to be able to develop Burma’s water Mr. Saw Tha Din said that Burma had very power as a means of restoring prosperity to the little fuel, a situation which could only be country. overcome by the harnessing of the country’s Mr. L. Weight, Financial Adviser to the water power. In this matter they pinned their Government of Burma, mentioned the country's hopes on Mr. Logan. The Burmese realized straightened economical position and said that that many British had given the best part of value had to be obtained from all public expen­ tfreir lives in Burma’s service. They hoped one diture. day to be able to do something in return but as The party of about thirty was representative yet they still had to ask for Britain’s help. of the electrical supply and manufacturing Mr. V. W. Dale (E.D.A.), proposing the industries and of concerns with interests in toast of the Institution of Electrical Engineers, Burm a.

Rural Electrification in Russia NDER the new five-year plan for wiring, fittings and electrical instruments. C Uzbekistan, U.S.S R., a thousand 60-kW Manufacture of generators will start in the near hydro-electric stations are to be built on small future. Electricity is supplied to a great many rivers and irrigation canals for supplying remote villages and in some districts such electricity to collective farms. Last year, 45 were processes as threshing, hulling and the prepara­ built and this year 300 more are under con­ tion of fodder have been electrified. Experiments struction. As a result it is expected that in 1950 are being made in regard to agricultural processes the daily consumption of oil in the villages of to which electricity has hitherto not been widely this Republic will be reduced by about 1,000 applied, such as ploughing; models of electric tons. A number of rural areas are also being tractors have already been completed. linked up with the transmission lines of in­ Collective farms are providing money (in dustrial power stations, such as the Farkhad addition to that provided by the Soviet hydro-electric station now being completed and Government) and labour for building the power the Central Asian Syr-Darya River. stations and engineers of urban industrial Factories in Uzbekistan have started pro­ enterprises are rendering technical aict __

duction of turbines, transformers, insulation. A . V a s il n jt s k y . November 8, 1946 E l e c t r i c a l R e v ie w 7 3 7 Railway Points Long-Distance Electrical Operation

p era tio n of railway the switches and the other By H. C. Towers, m j .e .e . O switches or points by for the facing point lock and power originated nearly half a century ago, bar. The locking bar is made of angle or but the application of electrical engineering tee iron fixed on rockers clipped to the rail to railway signalling did not show a very and is capable of a certain amount of radial great advance until the last two decades. movement from one side to the other; in Nowadays electricity is used in nearly every the middle of the operation the rockers are branch of signal engineering— only a small vertical and the bar is above rail level. section of which is covered in the present Consequently the bar would be held down by article, i.e., the opera­ tion of points by power instead of manually. The term “ points ” covers the two switches used to change the direction of vehicles from one line to another, one “ closed ” and the other “ open.” Both switches are rigidly coupled to­ gether so that only one can be up against the stock rail at a time.

In the early days of Diamond crossing with moving frogs railways, the switches were coupled by a rough form of rod and the wheel flanges of a vehicle standing on it. operated by some kind of hand lever adjacent The bars are longer than the longest wheel to the points. In some cases a clamp was base in use. The facing-point lock consists provided to fix the closed switch against the of a substantial plunger working in a casting stock rail. In 1860 new regulations required parallel with the rails. At right angles to the plunger is a stretcher joined to both switches and having notches cut to receive the plunger so that the points can be locked one way or the other, according to the lie of the switches. The plunger is connected to the locking bar so that it cannot be completely withdrawn from the stretcher to unlock the switches until the bar has thrown. The points cannot be unlocked while a train is passing over them. The Electric shunt signal distance from which mechanical points can be all facing points to be provided with locks operated from the signal cabin is limited by and locking bars. Usually two levers are legislation. Considerable load is imposed installed in the signal cabin, one for operating on the lever in the signal cabin by the weight 738 E l e c t r i c a l R e v ie w N ovem ber 8, 1946 of point rodding, the resistance of switches atmosphere. The piston is forced irom and the frictional losses of all the attendant normal to reverse, driving the point-operating connections. In a busy cabin, therefore, gear, while the air from the normal side is point movements are slow and the signal­ forced back through the normal pipe to man’s fatigue is proportional to the number atmosphere, the escape port being opened of movements performed during his term by the passage of the slide valve from normal o f duty. to reverse. These considerations and a desire to work This type of point valve has been in use points over an unlimited distance led to now for several years and has proved very several experiments with operation by means reliable. A more recent type employs three of low-pressure and high-pressure air and magnets, the third operating a valve which hydraulic and gas power. To-day the power cuts off the air-main connection after the operation is mainly electro-pneumatic or points have been operated, but a special all-electric. The photographs reproduced circuit immediately reconnects the air supply are all of the latter type. should anything occur at the points to open W ith electro-pneumatic layouts, the facing- the closed point switch. W ith this type of point lock is incorporated in an escapement, valve air leakage due to worn piston leathers which is usually fixed outside the track but is minimized. which may be fixed between the rails. The This type is now more or less standard for mechanism has a backward and forward electro-pneumatic point operation. Air is movement, accomplishing the locking of the supplied at 60 lb per sq in. If there is one switches driven through the escapement. cabin only the air supply is obtained from a The air motor driving the escapement is compressor and storage tank, but for a coupled direct and consists of a compressed number of stations a signal air main can air cylinder and piston. advantageously be run between two sub­ The auxiliary motor consists of two small stations containing air compressors. Two pistons operating a slide valve, which controls advantages are claimed for electro-pneumatic the admission of air to the point motor. point operation: First, the apparatus is The auxiliary is provided with two electro­ simple and can be maintained by the ordinary magnets, one for normal and one for reverse, signal fitter; secondly, the points can be and these control the auxiliary pistons work­ thrown rapidly. ing the slide valve, The magnets are When power operation was first introduced connected to the point lever in the signal cabin. On the points being thrown from normal to reverse, the sequence is as follows. The. point lever is reversed (at this stage indication is not considered) and this de-energizes the normal magnet and energizes the reverse. The reverse auxiliary c y lin d e r b e c o m e s charged with air at the same time as air supply is cut off from the normal side. The re­ verse piston pushes the

slide valve over, at Point-machine layout seen from above the same time pushing the normal piston back, The slide valve has the Practice was to operate the locking bar now connected the air main to the pipe also by the point motor so that the points leading to the reverse side of the point could not be changed while a train was motor, while the normal pipe is connected to passing over them. During the ias“ ^ November 8, 1946 E l e c t r i c a l R e v ie w 739

ecades track circuiting has made such which also incorporates the electrical switch progress that with power-operated points, and lock-detector and special contacts for as with mechanical points, the locking bar cutting out the motor when the points are has been done away with, the track circuit correctly set and locked. through the points locking the point lever These machines can be operated at low when the track is occupied. An electrical point detection circuit in­ dicates to the signal­ man that the points have responded to his lever movement, and are correctly set and locked. A special circuit-controller box fitted to the points makes contact normal or reverse according voltage from local batteries connected by to the position of the points. The contacts polarized control or by 110-V d.c. motors can be made only if the switches are properly supplied directly from the mains or from a set and the point lock fully home. This cabin battery on float. A.c. point machines circuit controller acts as a pole changer and are also in general use with series motors. operates an interlocked d.c. relay or a.c. vane The current taken by these machines is high relay in the signal cabin. The relay is and in order to obviate undue voltage drop provided with normal, reverse and de­ the motor circuit is supplied from a local energized contacts. By the normal and transformer situated close to the points. reverse contacts small dials reading “ N ” The polarity of the circuit is controlled and “ R ” at the back of the point lever are through a polarized point controller which is illuminated. For colour-light or other elec­ reversed according to the position of the trically operated signal, the control circuit lever in the signal cabin. is taken over the point relay, so that no signal can exhibit a “ proceed ” indication Hand-Generator System unless all the points over which it reads are Where a power supply is not available, correctly set and locked. For a mechanically points can be operated by d.c. machines on operated signal, an electric lock is used on the hand-generator principle. This system the signal lever. The de-energized contacts is used in Northumberland on the Ashington on the detection relay are used for various Colliery line, where facing points are operated warning circuits and for reconnecting the 1,500 ft from the signal cabin, and, in Ireland, point valve of the cut-off type to the air at 5,550 ft from the cabin. main should the point-detection circuit fail The points are operated by all-electric through the opening of a switch. machines which work switch and lock movements. Signals, of the semaphore type, All-Electric Operation are operated by low-voltage machines. All Point operation by all-electric machines is signals and points are controlled by full-sized very much in favour to-day because no levers mounted in a regular signal frame and compressed air is necessary. The system is provided with the usual mechanical inter­ therefore most suitable for the operation of locking. The levers work electrical contacts a few outlying points which could not connecting the various circuits controlling ordinarily be controlled from an existing signals and point machines. Adjacent to the mechanical cabin. Many of the largest lever frame is a hand generator. Indication railway yards in Great Britain and other is usually provided in the form of an electric parts of the world employ all-electric lock preventing the final movement of a lever. operation. This may be understood by considering a The point machine consists of an electric complete point movement. To reverse a motor which drives the switches and operates pair of points the lever controlling them is the point lock through a train of gears. pulled over but cannot be fully reversed The whole of this mechanism, including the owing to its being held in the indication terminal panel, is enclosed in a cast-iron case, position by an electric lock. When the 740 E l e c t r i c a l R e v ie w Novem ber 8, 1946

points are correctly reversed the electric lock movements take longer and slow up the on the point lever is released. The lever frame Without the locks several points can may then be fully reversed and the signal be thrown at once; in all electric operations lever or levers pulled. this may impose an overload and blow the If several point levers are provided it may main fuse. In a busy cabin, in the event of be difficult to operate the generator and still a point failing, the signalman may not notice be within reach of the levers. Indication that the signal has remained at danger slides are therefore provided close to the though the lever has been reversed and this generator and within easy reach of the leads to delay in bringing the train in. There operator. These, when fully pulled or pushed are many arguments for and against both back, release the locking in the frame. The methods; the choice between them has to be locking may be made to release the signal settled by circumstances and the policy of the levers direct, dispensing with the point lever. administration concerned. W ith this system all points and signals can be Acknowledgments are due to the Westing- power-controlled from a central position, the house Brake & Signal Co., Ltd., for per­ signals being held “ off ” by battery power. mission to reproduce the photographs in The question of point indication has this article. occasioned some controversy. As explained previously, the position of points is elec­ French Electricity Supply trically detected, the circuit operating some From Our Paris Correspondent form of polarized relay. The relay operates H E recent cutting off of electricity in Paris, normal and reverse visuals behind the point T without warning, has given rise to gloomy lever and also controls signals which read prognostications for the future in spite of official over the points concerned. pronouncements which deny that restrictions are likely to be so severe this winter. But there Indication Locks are so many qualifications that the reassurance On some railways, normal and reverse is nullified. Four reasons have been given why cuts are indication locks prevent the final or likely to be introduced:—The cessation of indicating movement of the lever until the imports of power from the British Zone of points correctly respond and the “ indica­ Germany, amounting to at least 50,000 kW ; tion ” is received. For example, take the several thermal plants are out of use undergoing operation of a point lever with indication repairs; lack of rain has reduced storages to locks. The lever is moved from normal to 69 per cent of the normal level ; and individual the reverse indication position, where the consumption has risen from an average of 450 final movement is prevented by an indication kW h in 1938 to 650 kWh. It has been estimated lock. W hen the points are correctly reversed that there has been a 30 per cent increase in consumption this year over last year. and locked, the point-indication relay reverses Production, however, has increased by 10 and the indication lock is released, permitting million kWh, which will enable a larger allo­ the lever to be fully reversed. This releases cation to be made. It is expected that France the mechanical locking in the lever frame and will be divided into three sectors, the consump­ enables the signal lever to be reversed. If tion in each of which will be reduced one week the reverse indication had not been correctly in three. Paris is -likely to be divided into two received the point lever would have held zones, with each suffering cuts of 45 minutes at mid-way and the signal lever would have given times. been locked in the normal position. It is mainly domestic consumers who are responsible for the increased demand. Al­ Without indication locks, the point lever though there is little coal available for domestic can be fully reversed, followed by the signal purposes, most people thought that the days of lever. If the points do not set correctly the electricity cuts were over, and have been buying visual light behind the point lever does not electric heaters. show “ R ” and the signal does not “ clear.” On November 1st, thermal plants which have (This refers to operation from a power frame undergone repairs were expected to be in with colour-light signals.) The signal aspects operation again. To solve the problem per­ are also repeated behind the lever and in manently, however, it will be necessary for the hydro-electric plan to be achieved. This is this case, due to the points not reversing, expected to make available a supplement of 900 the red visual would continue to be illumi­ m illion k W h in 1947 and 8,000 m illion by 1950. nated with the signal-lever reverse. Total production will then be about 40 000 It has been claimed that the disadvantage million kWh. L ’Electricité de France asserts of check locks on point levers is that lever that by 1948 there will be no further cuts Novem ber 8, 1946 E l e c t r i c a l R e v ie w 7 41

arranged by Mr. H. C. Hoban (research Telecommunication Networks laboratory) and Mr. J. H. Savage (Woolwich Pulse-Testing Methods works). These covered a wide range; some H r H E pulse-testing of wide-band telecom­ were related to the company’s work and munication networks is the subject of a products, others were outstanding examples of paper prepared by M e s s r s. D . C . E s p l e y , E . C. arts and crafts not directly concerned with these. C h e r r y and M . M . L e v y (G.E.C. Research Laboratory) for the Radio Section of the Institution of Electrical Engineers. The authors Heaters in Hard Water describe equipment that has been designed for f k D ESIG N of base-plate that would permit rapidly and directly assessing the characteristics the use of a more widely spread heating of networks to assist the study of line-cable and element for immersion water heaters having feeder matching, testing delay lines and band­ handholes in the storage tank or cylinder was pass filters; as well as the mismatching of radio suggested in the aerials and feeders and the study of feed back paper presented be­ amplifiers. The complete equipment is mounted fore the Institution in five panel units contained in a cabinet on of Electrical Engi­ wheels and it provides information that can neers by Messrs. usually be obtained only by laborious attenua­ Ronald Grierson tion and phase measurements. and Forbes Jackson last March. Since then a 2-kW ele­ Henley Students ment has been tested by the North- TUDENTS taking the courses under the met Power Co., in education scheme of W . T. Henley’s Tele­ a 24 in. by 24 in. graph Works Co., Ltd., held their fourth conversazione at the Gravesend Technical Institute on Saturday last. The proceedings Spread immersion heater in hard-water began with orchestral music under the direction of Mr. W. Hill and the function was then opened by Mr. E. Judge, manager of the by 15 in. galvanized Gravesend works. Sir Montague Hughman, mild-steel tank with Henley’s chairman, presented awards to the a 27 gal. capacity students and there followed an address by Mr. The water used E. W. Woodhead, Kent county education had a temporary officer, who was thanked by Dr. P. Dunsheath, hardness that was consulting engineer and director of the one of the highest company. Mr. P. E. Bacon spoke on behalf in the country, viz., 24 deg (Clark), giving 3-43 lb of the students and the proceedings closed with o f scale-forming m atter per 1,000 gal. Corres­ a speech by Mr. V. B. Twiss, education officer. ponding figures for permanent hardness were 4 After tea there was an inspection of an deg and 0- 57 lb. A storage temperature of approxi­ exhibition of students’ handicrafts and demon­ mately 140 deg F was maintained and 60 gal of strations of scientific and technical apparatus water were drawn 'per working day. By the time the accompanying photograph was taken, 6,500 gal had passed through the tank and the energy consumption had reached 2,227 kW h. This is equivalent to a run of thirty-two weeks in the average low-cost house. The weight of the scale and sludge on the floor was 2 i oz. Fu rth er tests are to be taken after a further run of the same quantity of water and will be continued until the accumulation of scale is found to inter­ fere materially with the Mr e. W . Woodhead addressing Henley students. The platform e r o u o includes Sir Montague Hughman, Sir Edward Crowe and free circulation of water * K Dr. P. Dunsheath or until the element fails. D 742 E l e c t r i c a l R e v ie w Novem ber 8, 1946 PARLIAMENTARY NEWS By Our Special Reporter

AST week in the House of Commons, electrification in Scotland had been held up by L Mr. N. Smith asked the President of the the lack o f poles. Board of Trade whether he would consider an Answering a number of questions by Mr. amendment of company law to prevent statutory Glossop, Mr. Belcher, for the President of the monopoly concerns from circularizing political Board of Trade, said that the first imports of poles propaganda to their customers. after the end of the war arrived last February, Sir Stafford Cripps said he did not think and were only just becoming ripe for preservative that such an amendment would be appropriate treatment. They, therefore, had not yet been for inclusion in the Companies Bill. allocated. About 17,000 timber poles were Asked by Mr. Smith whether he was aware imported into this country during September that only last week every customer of the for all essential requirements, including the West Kent Electricity Company received a electricity supply industry. leaflet saying that under nationalization the Cutting Off Electricity price of coal would go up and if he thought it was desirable to mix business with mendacity Mr. Shinwell said that all possible steps were and malice, Sir Stafford Cripps said that that taken by the C.E.B. to issue warnings through seemed to be a matter for the shareholders. the B.B.C. and the press and to individual There was no reply when Mr. Chamberlain electricity undertakings when there was a likeli­ asked Sir Stafford Cripps if he was aware that hood that generating capacity would not be the South London Electric Supply Corpora­ able to meet the demand. Also electricity tion had been distributing this “ lurid pamphlet ” undertakings were instructed to avoid as far as which ended by saying that nationalization possible cutting off supplies without telephone would mean higher prices and bad service, and warning to hospitals, factories engaged in if that was not entirely unwarrantable, mislead­ continuous process .work, and other establish­ ing and untrue. ments where sudden interruption would be dangerous. It was not, of course, practicable New Power Stations to give individual notice except to a small On October 29th Mr. Shinwell, Minister of proportion of consumers. The choice lay be­ Fuel and Power, said that the Central tween having a pre-arranged interruption of Electricity Board had arranged for forty-five new supply which might have been avoided or a stations or extensions of existing stations with sudden interruption which occurred only when a total generating capacity of 3,209,000 kW. it became inevitable. The best solution would Fifteen with a capacity of 521,000 kW were be for everyone to reduce consumption as far nearing completion. He was not aware of any as possible during the peak hours of 8 to 10 in case in which completion was being delayed the morning and 4 to 6 in the afternoon. owing to shortage of materials. Asked by Mr. Churchill if it was not possible The maximum capacity of generating plant to give a momentary flick two or three times by operated under the control of the C.E.B. was way of a five-minutes’ warning that there was 10,689,000 kW but deductions must be made for going to be a stoppage, Mr. Shinwell said he plant being unavailable owing to breakdowns, was not certain whether the proposal would be overhaul, etc. It was estimated therefore that practicable, but they would give it consideration. not more than 8,738,000 kW could be relied on for this winter. In severe weather it was esti­ Electrical Fittings mated that the maximum simultaneous demand In reply to questions by Mr. J. J. Robertson, would be about 10,000,000 k W . W h e n occas­ Mr. Tomlinson, Minister of Works, said that ionally load had to be shed, it was due to the production of electrical fittings was in the absence of adequate plant. Priority was general adequate for the demands of priority taken into account, with the supply of generating building, which included all new housing and plant to the C.E.B., but of course there were other essential work. It could, however, meet other priorities to be considered. only a proportion of the remaining requirements. No licence was required to export these goods, Overhead Line Poles so that detailed figures of exports were not Replying to Mr. Spence as to the percentage available, but it was estimated that 17 per cent of the electric transmission line poles imported of production of electric lighting appliances, from Germany that was allocated to Scotland, accessories and fittings and 11 per cent of Mr. Shinwell said that the wooden poles which production of electric cooking and heating were beginning to arrive would require seasoning apparatus were at present being exported These for six months at least before they could be used. percentages mainly resulted from substantial No allocation so far had been made to the exports of particular items which were not in electricity supply industry. Schemes for rural short supply. November 8, 1946 E lectrical Review 743 COMMERCE and 1M H S I H 1 Notification of Accidents. Factory Construction Schemes.

^ Minister of Labour and National Service for hire at 16s. 3d. per quarter or Is. 3d. per has given notice that he proposes to make week. Now available to any householder in under Section 65 of the 1937 Factories Act, the borough, subject to the premises being regulations entitled the Dangerous Occurrence suitable for installation, the hire plan is primarily (Notification) Regulations, 1946. intended for operation in conjunction with The Dangerous Occurrences (Notification) Council and other housing and conversion Order, 1935, which these Regulations would schemes. During the first week of the scheme revoke, extended the provisions with regard to fifty hire agreements were completed, and it is notice of accidents, to the same classes of occurrences as are speci­ fied in the Schedule to the new Regulations. It was, however, limited to factories or work- shops within the meaning of the Factory and Workshop Act, 1901, and places which for the purpose of the provisions of that Act with respect to accidents, were a factory or work­ shop or part of such premises. The proposed Regula­ tions require notification of the same classes of occurrences in factories St. Pancras Electricity Department’s showroom display arranged in as defined in the F a c ­ conjunction with its refrigerator hire scheme tories A ct, 1937, or in premises or places to which Part V of that Act expected that a high rate of application will (which relates to the notification and investiga­ continue. The refrigerator offered is the tion of accidents and industrial diseases) is Electrolux 1-6 cu ft built-in model which is at applied by Sections 103 to 108. Copies may present being supplied for Government tempor­ be obtained from the Stationery Office, price Id. ary housing schemes. Safeguarding of health, low costs, and labour-saving are points stressed Progress in Factory Building in a special showroom display arranged by the undertaking in connection with the hire scheme. The Board of Trade announces that up to September 30th, 2,236 building projects for new House-Building Industries’ Committee factories and extensions had been approved. These should eventually provide additional A conference is being arranged by the House- em ploym ent for about 190,000 men and 150,000 Building Industries’ Standing Committee (82, women. Out of the total number of projects Cavendish Street, W .l) at the Seymour Hall, approved, 901 are in the development areas and Marylebone, on November 28th. At this a should eventually provide additional employ­ report upon the Committee’s work during the ment for about 100,000 men and 101,000 last eighteen months will be presented and women; 313 are for the North Eastern area, problems now facing the house-building industry 213 for South Wales, 312 for Scotland, 38 for w ill be discussed. West Cumberland, 20 for South Lancashire, and five for the Wrexham area. Building has New Accrington Station begun on 380 of the development area projects, The proposed appointment of an adviser to of which 40 projects had been completed by the Corporation on the design, construction Septem ber 30th. and commissioning of the new £5,000,000 Refrigerator Hire Recommences power station at Huncoat referred to in our issue of November 1st (page 693) came before First news of resumption of refrigerator Accrington Town Council at its last meeting. hire trading by supply undertakings comes from The town clerk (Mr. P. D. Wadsworth) reported St Paneras, where the Electricity and Public that the matter was now before the Central Lighting Department is offering a refrigerator Electricity Board which indicated that it would 7 4 4 E l e c t r i c a l R e v ie w Novem ber 8, 1946 be giving a wrong lead if they agreed to the fluorescent tubes of the cold cathode ty p e are appointment as adviser of Mr. Hubert Clarke employed, while throughout the tourist class (director of a concern which might possibly lounge and dining saloon the main lighting is be a contractor for the new station). The by laylights of flushed opal glass and ceiling chairman, general manager and chief engineer fittings in silver-bronze employing standard of the Board, however, confirmed that the Board lamps in Superlux glass bowls. All these had every confidence in Mr. Clarke as an fittings were manufactured by the G.E.C. to the engineer of high standing. The question of designs and specifications of Mr. Grey Wornum, Mr. Clarke’s ability and integrity was outside the architect responsible for the interior decora­ the point under consideration. It was empha­ tion of the liner, and Mr. Waldo Maitland, the sized he was well able to carry out the work as lighting consultant of the Cunard-White Star an engineer. A recommendation that the Line. matter should be referred back for further consideration in the light of the new information Delivering a Large Transformer now available was accepted. Recently a 45,000-kVA, 3-phase, 132/33-kV Batti-Wallahs’ Society transformer for the Central Electricity Board was taken from the English Electric Co. s The way architecture influences our lives and Stafford works by road to Nottingham. The reflects the spirit of the times was the subject complete transformer weighed 125 tons and as of an address given by Mr. T. Graham Crump, carried on the transport vehicle 92 tons. On F.R.I.B.A., at a lunch held last week by the its journey this load had to descend the 500-yd- Batti-Wallahs’ Society. long Weston Bank, near Stafford, with an Lighting in the “ Queen Elizabeth ” average gradient of 1 in 9 and a maximum of 1 in 7. This was negotiated with one tractor The General Electric Co.’s main contribution at the front end of the vehicle and a second to the internal lighting of the Queen Elizabeth tractor coupled to the rear. included the manufacture of fittings for the first class salon, lounge and wing staircases, the Lift Calculations cabin class cocktail bar, the tourist class lounge, dining saloon and smoke room. In the first Preliminary information usually needed by class salon illustrated,the central lighting feature architects for the planning of passenger, goods, is a large silver-bronze fitting 27 ft 6 in. long by hospital, motor-car and service lifts is provided 12 ft wide which employs architectural and rom the calculating rule devised by Marryat & standard lamps. The outer margin ceiling lights Scott, Ltd. The rule makes such data as the are of special pressed glass and contain standard following readily accessible:— Size to which floors should be trimmed for a lift to carry various numbers of persons; load on lift-shaft walls; passengers dealt with per hour at different lift speeds; dimensions of car for conveying beds and stretchers in a hospital ; and limiting dimensions of shaft for general goods. Post - war “ reprints ” are now available, but can be supplied under present conditions only to practising architects, quantity surveyors and consulting engineers.

Bo'ton Engineer’s Salary A representative of the Electrical Power Engineers’ Association, is to address Bolton Council Labour Group on Sunday to explain the demand for a starting salary of Attractive lighting in the first class salon of the £1,916 15s. rising to £2,255 for the 11 Queen Elizabeth ” borough electrical engineer. The Association has advised a lamps as do the wall fittings and those at the boycott of the appointment at the advertised back of the dais, whilst the outboard “ soffit ” salary of £1,600 a year. The Electricity Com­ lighting is by architectural lamps. Engraved mittee has decided to protest against the boycott “ glamour ” glass with a rich sandblast finish is to Mr. Shinwell. Mr. John Lewis, M.P. for used throughout. Bolton, has now written saying he was asked to In the cabin class cocktail bar, “ Osram ” intervene by the E.P.E.A. Novem ber 8, 1946 E l e c t r i c a l R e v ie w 7 4 5

aving considered the resolution from Bolton that types can be created of the qualities desired orporation protesting against the action of in any particular industry. One of them has a ® standing Joint Committee of the A.M .E.E. melting point as high as 280 deg C, whereas and the E.P.E.A. requesting engineers not to the highest known melting point of natural apply for the post of electrical engineer and wax is 88 deg C, and it is said that cables pro­ manager at the salary offered, the Brighton tected with “ Abril ” are proof against termites, Corporation Electricity Committee have re­ while machines coated with it or wrapped in solved: “ That nationally negotiated agree­ treated paper are impervious to humidity ments are desirable and that the resolutions of and heat. the Bolton Council be not supported.” Lamp Publicity Metrovick Export Drive in Portugal The lamp publicity of the Metropolitan- As an indication of the special efforts it is Vickers Electrical Co., Ltd., this winter is based making in the national export drive, the Metro- on the slogan “ When daylight fades, switch to politan-Vickers Electrical Co., Ltd., has sent us Metrovick ' Cosmos ’ lamps.” Attractive press a composite picture of showcards displayed in advertising designs the windows of its agents in Lisbon. The show­ are supported by cards are all 6 ft high and in two colour schemes, large window dis­ red and black and yellow and blue; they call plays opening to 9 ft attention to various schemes carried out by the and small displays company in different pqrts of the world. The measuring 3 ft 6 in. exhibition is in a popular square and forms part The small display of the drive for business in Portugal. has been designed especially for small Iron and Steel Control The Minister of Supply has made the Control Cosmos aluminium counter stand of Iron and Steel (No. 54) Order (S.R. & O. No. 1728 1946, Stationery Office, price Id.) windows and for which came into force on October 30th. The Order amends the maximum prices of certain those windows where the contractor steel products, the principat alterations including wishes to include increases in certain goods and a reduction in products other than the price of alloy steels containing molybdenum lamps in his display. and vanadium. In preparation is a new comprehensive Electric Vehicle Demonstration lamp catalogue with a distinctive orange cover, and a pin-up folder for the contractor. To supplement the course of lectures on This folder will contain not only list prices but electric vehicles now being given at the L.C.C. also prices with purchase tax. Much of the Smithfield Institute, E.C., by Crompton Metrovick literature is still confined to descrip­ Parkinson specialists, a practical demonstration tive leaflets, each leaflet covering a separate was given in Smithfield Market on October fitting either industrial or street lighting, but as 29th. Assembled for the occasion were two the manufacturing position becomes stabilized 1-ton “ M orrison-Electricar ” vans and a 1-ton catalogues and brochures will be produced to chassis. After demonstration and inspection, show the whole range of the company’s lighting those taking the course were given the oppor­ equipment. Literature is being prepared cover­ tunity of driving either an electric van or the ing the whole subject of infra-red electric lamp chassis. heating. This literature will take the form of Composition of “ Stalloy” a series of coloured folders, and the first one (No. 4108/3-1) is now available. This folder has In the article entitled “ Electrical Sheet an attractive cover showing the Gloster Meteor Steel,” describing the new research laboratories on its record breaking run at Herne Bay in 1946. of Joseph Sankey & Sons, Ltd., which appeared in the Electrical Review of October 25th, “ Stalloy ” was referred to as 4 per cent nickel Utilization of Waste Gas steel. This should of course, have read 4 per A b o u t 5,000 tons o f coal will be saved annually cent silicon steel. as a result of a “ mutual aid ” scheme between the Renishaw Iron Co. in North Derbyshire and “ Abril” W axes the Derbyshire and Nottinghamshire Electric In March, 1946, at a former Royal Ordnance Power Co. Just over a year ago a blast furnace, factory at Bridgend, Glamorgan, manufacture which had been rebuilt and modernized during was begun of a range of waxes as alternatives the later war years, was put into operation at the to natural waxes. This group of substances, ironworks, and some of the waste gases have known as “ Abril,” has as its basis the by­ been used to generate electricity required within products o f the m argarine, soap and other fat- the works. On October 23rd a second furnace, splitting industries of this country. It is claimed which has been overhauled and modernized, 746 E l e c t r i c a l R e v ie w N ovem ber 8, 1946

was “ blown in,” and the two will have an out­ An amendment was moved that the recorn put of some 2,300 tons of pig iron a week. To mendation should be merely to instruct the avoid wasting the furnace gases representatives general manager to submit a full report on the of the ironworks and the power company have matter at the next meeting of the Electricity devised a scheme whereby a 1,000-kW turbo­ Committee. In favour of this course, it was generator is to be installed and about 7,500,000 contended that the proposal would lead to the kW h a year will be fed into the power company’s Department’s competing with men who had mains. spent some years in the country s service. There was already available adequate service in Boilers for New Glasgow Station this respect. The amendment was rejected Glasgow Corporation has accepted a revised and the original recommendation adopted. offer of £2,614,000 by Babcock & Wilcox, Ltd., for the construction and erection of six boiler Kearsley Extensions units at the new generating station at Braehead. In a few copies of the Electrical Review of Babcock & Wilcox were originally to have October 25th, the boiler diagram in connection installed four boiler units, but following agree­ with the description of the Kearsley power station ment between the Central Electricity Board and extensions (p. 642) was unfortunately shown the Corporation to extend the station, they were inverted. The caption to the same illustration asked to supply two more. was also somewhat misleading, although it is quite clear from the text that the boilers in Belfast Plant Contract question are by Babcock & Wilcox, Ltd., fired The Belfast Corporation Electricity Com* by Babcock-Detroit “ Rotograte ” stokers. mittee has placed a contract with the Stirling Boiler Co., Ltd., for the supply and installation Illumination Design Course of steam boiler plant with auxiliaries, pipework, Applications for seats for the next Illumination feed pumps and coal-handling plant at the Design Course (an evening one) arranged by Harbour power station. The value of the E.L.M .A . Lighting Service Bureau, which was to contract is £752,721. commence yesterday (Thursday) exceeded the seating capacity. It will not be possible to Flour-Mill Electricians’ Wages repeat the course this year, owing to the very Electricians in the flour milling industry in a full programme, but the Lighting Service Bureau specified category are to receive an increase in hopes to hold a similar course in the early part their base rate of wages from £3 9s. 6d. to £3 13s. of next year. under a National Arbitration Tribunal award, following a claim by the Electrical Trades Rubber Market Freed Union. The tribunal has decided against the The Secretary of the Export Promotion claim that the base rates of the electricians Department of the Board of Trade (Mr. concerned should be related to the base rates Marquand) announced on Monday last that applicable to the electrical contracting industry. from November 18th the rubber market would Fluorescent Lighting in Silk Mills be free to resume its normal activities. This would enable the importation of rubber on The value of fluorescent lighting in the many private account as from January 1st by which fine processes in the silk and rayon industry is date the Board of Trade would have ceased to well illustrated by the number of installations purchase rubber. This had been made possible which have been made during the past year or by the rapid improvement in the supply of two. Prominent amongst them is the hosiery natural rubber. mill of Kayser-Bondor, Ltd., at Dowlais, Glam., which has a floor area of 25,830 sq ft and has Pattern Makers’ Strike Notice been relighted by means of Revo “ Trufolite” reflectors and 80-watt 5-ft tubular fluorescent At a delegates' meeting of the United Pattern lamps. In the hosiery manufacturing shop Makers’ Association last week-end it was decided 230 Revo “ Trufolites ” are mounted 7 ft 3 in. to hand in strike notices to the employers to high to lamp centre. take effect on November 23rd. It was also agreed that no overtime should be worked after Electrical Contracting at Stoke this week. These decisions arise from the At a recent meeting of the Stoke-on-Trent employers’ refusal to meet a claim for an City Council the Electricity Committee reported increase in wages from 2s. 5Jd. to 3s. an hour. that it had considered a proposal that the Electricity Department should carry out installa­ Reports on German Industry tion, repair and maintenance work and it Among the latest reports upon German recommended that the proposal should be industry prepared by British and Allied in­ adopted and the general manager should report vestigating teams are the following:— B.I.O.S. on the extension of the installations division of 725, “ German Research on Rectifiers and the Department to enable it to undertake the Semi-Conductors” (4s. 6d .); F .I.A .T . 288 w ork. “ Rural Telephone Service, Dial Switching for November 8, 1946 E l e c t r i c a l R e v ie w 7 4 7

Teletypewriter Systems and Miscellaneous and asks for manufacturers’ catalogues of Items (is. 6d.); F I.A T 669> Survey of fittings, cooking and heating apparatus, motors, German Low Voltage Motor Control Equip- meters, switchgear, wires and cables, etc. m ent (3s. 6d .); J.I.O .A . 56, “ Selenium Brooks & Bohm, Ltd., have opened a new ® eveI°Pnient in Germany ” (4s.). branch at Ulster Bank Chambers, 4-6, Ann F.I.A.T. 115, “ Survey of the Carbon Brush Street, Belfast (telephone: Belfast 24447) Industry for Electrical Equipment of Germany ” The Purchasing Department of British (2s.) ; J.I.O.A. 59, “ Synchronized Broad­ Mechanical Productions, Ltd., is now operating casting Systems in Upper Austria : Principle from the com pany’s works at 23-39, Bendon of Operation ” (Is.). Valley, Wandsworth, S.W .l 8 (telephone: Batter­ sea 8630). Trade Publications Britannia Batteries, Ltd., has moved to new Philips Lamps, Ltd., Electronic Heating offices at Trafalgar House, 9, Great Newport Depot, Aboyne Road, London, S.W.17.— Street, London, W .C.2 (telephone: Temple Bar Quarto brochure of 20 pages entitled “ The 2354/5). ABC of High-frequency Heating of Metals,” Antiference, Ltd., has moved to 67, Bryanston which is intended briefly to explain the Street, London, W .l. elementary principles and some applications of induction heating. Fine drawings illustrate Five-Day Week the range of work made possible thereby, as Allen West & Co., Ltd., have adopted the well as types of coupling coils, automatic five-day week and their Brighton works and feeding devices and quenching methods. offices are closed from Friday night until Dalyte Electrical Co., Ltd., West Row, North Monday morning. Kensington, London, W.10. — Illustrated The Dalyte Electrical Co., Ltd., has adopted brochure describing “ Deco ” cable reeling a five-day week and therefore its premises will drums for a variety of industrial purposes. be closed on Saturday mornings. Delco-Remy & Hyatt, Ltd., Ill, Grosvenor Road, London, S.W .l.— Illustrated and priced leaflet (EF.46.1) on exhaust fans. Tucker & Edgar, Berkeley Road, London, TRADE MARKS N.W .l.— Illustrated catalogue with price list of modern “ Teeanee ” lighting pendants, wall TB1HE following applications have been brackets, lanterns and table lamps. made for trade marks. Objections may be Midland Electric Manufacturing Co., Ltd., entered within a month from October 30th :— Reddings Lane, Birmingham, 11.— Illustrated Runtact. No. 642,941, Class 7. M achine and priced folder on “ Glasgow-Rex ” switches, tools.— Donovan Electrical Co., Ltd., Safuse redesigned for cartridge fuses with larger Works, Northcote Road, Stechford, Bir­ capacities. m ingham , 9. I n t e r v o x . N o . 6 4 2 ,6 3 3 , Class 9. Electrical E.C.D., Ltd., Tonbridge, Kent.— Priced leaflet on “ Ozono ” air conditioning cabinet. apparatus and instruments included in Class 9; scientific,cinematographic and teaching apparatus Changes of Name and instruments, coin or counter freed apparatus and talking machines.— Trix Electrical Co., Ltd., Beaconectric, Ltd., wholesale electrical dis­ 1-5, Maple Place, Maple Street, London, W .l. tributors, trading as the Beacon Electrical Co., 42, Richmond Road, Kingston-on-Thames, Surrey, have changed the title of the company to the Beacon Electrical Co., Ltd., with branches INFORMATION at Guildford and Reading. Mr. W. Runnalls has been appointed to the board. DEPARTMENT Southam pton Electrix, Ltd ., o f 126a, Mac- ^ ''lEN ER A L inquiries from readers relating naghten Road, Bitterne Park, Southampton, has to sources of electrical goods, makers’ changed its name to Southern Electrical Acces­ addresses, etc., are replied to by our Information sories, Ltd. The nominal share capital of the Department through the post. Inquiries com pany was increased on O ctober 14th from should be accompanied by a stamped addressed £7,500 to £15,000. envelope. Our extensive records enable us to reply to Trade Announcements most queries, but occasionally we ask for our The Mercantile Credit Co., Ltd. (hire-purchase readers’ assistance in tracing names and finance), has removed from its temporary war­ addresses not known to us. We should be glad time offices at 208a , Regent Street, London, to have such information regarding the W.l, to new and permanent offices at Argyll following:— House, 246-250, Regent Street, Lo nd on , W.l. Makers of screwed socket portion of Edison Mr John Peirson, electrical contractor, has lampholders, also of slotted tubes for bayonet nnened new offices and a showroom at 31, cap lampholders, not makers of complete Charles Street, Bradford (Tel. Bradford 6265), lampholders. 7 4 8 E l e c t r i c a l R e v ie w Novem ber 8, 1946

but those who have not had any previous International Standardization training in industry and o n l y limited technical T a conference of representatives of the experience in the Services will require a lull A national standards bodies of twenty-five two years’ apprenticeship and should follow nations held in London from October 14th to an approved graduate apprentice scheme. 26th, a draft constitution and by-laws for a new The arrangements will be administered by international organization was unanimously the Appointments Officers of the Ministry of agreed upon. The object of the “ International Labour and National Service whose officers Organization for Standardization ” or ISO, as will be in contact with local representatives of the organization will be known in its the Institution’s Advisory Service. Intending abbreviated title, is to facilitate the co-ordination applicants for grants should notify the secretary and unification of the industrial standards of of the I.E.E. when they apply to the Ministry. the different countries. The seat of the secretariat of the new body is to be in Geneva. The first president is to be “ Britain Can Make It ” Mr. Howard Coonley, chairman of the Executive H E Council of Industrial Design announces Committee of the American Standards Associa­ T that the “ Britain Can Make It” Exhibition tion, with Mr. Gustave L. Gérard, president of will remain open until December 31st next. the Belgian Standards Institution, as vice- The Council has considered many suggestions president. For the next five years, the five which have been received for sending the major countries, namely, China, France, United Exhibition on tour, but owing to the difficulties Kingdom, U.S.A. and U.S.S.R. will each have involved has decided not to -do so. It has also a seat on the Council. The other countries been decided that the technical difficulties and which were voted for and now have seats on the cost involved and the inevitable lapse of the Council are Australia, Norway (for four time, will be too great to justify the Government years) ; Belgium, India (for three years) ; and in sending the Exhibition overseas. Brazil and Switzerland (for two years). The Council announces from November 12th Although the establishment of ISO is subject the Exhibition will be closed to the public every to ratification by national standards bodies Tuesday and Friday morning from 10 a.m. to within six months, it was unanimously agreed 1 p.m. On Tuesday mornings the Exhibition by those present at the London Conference that will be reserved for school parties and on the International Standards Association should Friday mornings, beginning at 9.15 a.m., be considered as having been dissolved as from directors, managers and buyers of industrial A p ril, 1942. Subjects o f m ajor im portance and commercial establishments and foreign suggested for immediate consideration, include visitors can obtain admission on presentation iron and steel (including cast iron and cast steel), of their signed business cards. Children cannot rubber and coal and coal products. be admitted under this arrangement. The present arrangements whereby all these cate­ Grants for Training gories of visitors can obtain entry on week­ days from 9.15 a.m. and after 10 a.m. (except O R many years it has been the practice in Sundays) without queueing, still holds good. Fthe electrical engineering industry for candidates for positions to follow a course of practical training appropriate to their educa­ tional standards; the normal course for univer­ Neasden to Burn Oil sity graduates lasts for two years and is known A BOUT 70,000 tons of coal a year or 64 as a “ college apprentice ” course. Provision per cent of the present coal consumption has now been made under the Further Education will be saved by the partial conversion, just begun, and Training Scheme of the Ministry of Labour of the London Passenger Transport Board’s and National Service for grants to enable those Neasden generating station from coal to oil who have obtained university degrees in elec­ burning. This is believed to be the largest trical engineering, or who have qualified in single coal to oil conversion job in the country. some other way as graduates of the Institution Neasden station, together with Lots Road, of Electrical Engineers, and who have been supplies power for London’s Underground and prevented by their national service from com­ Metropolitan Railways and it has a capacity pleting their practical training to undertake of 80,000 HP. The first of its six pulverized fuel a specially designed course of practical training boilers will be converted to oil firing during the conforming to By-law 12a of the I.E.E. Decem ber quarter o f 1946. T h e other five w ill Employers of these men will be expected to follow, and will take at least eighteen months pay the usual national scale applicable to to complete. When all these boilers are con­ engineering graduates and the awards under the verted they will consume about 45,000 tons of scheme will take these salaries into account in oil a year. The main contractors are British the normal manner. The majority of those Combustion Equipment, Ltd., and the sub­ who have served in certain technical branches contractors are Hamworthy Engineering Co., of the Services should be able to complete their (oil transfer pumps) and Babcock & Wilcox practical training in a twelve months’ course, (“ Simplex ” oil firing units). November 8, 1946 E lectrical Review 749 ELECTRICITY SUPPLY Leicester Lighting Scheme. Yorkshire Tariff Concession.

Barrow-in-Furness. — Supply Extensions.— H astings.— Supply Schemes. — The Electricity The Electricity Committee is to extend the supply Committee has approved schemes for extensions to Outgate, Marton, Newlands and Tower Wood and developments costing £70,913. at a cost of £11,130. Leicester.— Street Lighting Conversion.— Battersea.—Cable Replacement.— The re­ The City Council has approved a recommenda­ maining obsolete vulcanized bitumen distributors tion of the Public Lighting Sub-Committee that are to be replaced by 4-core paper-insulated lead the street lighting over an area within half a mile sheathed and armoured cable at a cost of of the city centre shall be converted from gas £11,330. to electricity. The chairman of the sub­ Extensions.— A supply is to be provided at committee stated that the estimated cost was a cost of £17,724 to the Hibbert Street area £16,450 and an annual saving of £700 would be which is being developed by the L.C.C. effected. The Council also approved a scheme Bexhill.—C h a n g e - o v e r .— Estimates are being costing £1,565 for electric lighting in Glenfield prepared for changing over the system of supply R o ad . in the St. Leonards Road area. Lighting of Public Clocks. — A special sub­ committee has been set up to consider the Birkenhead. — Lighting Conversion. — The fighting and synchronizing of the city’s public borough electrical engineer has been asked to clocks. submit an estimate of the cost of converting 2,922 gas lamps to electricity, including the London.— J.E.A. Extensions. — Mains exten­ provision of ripple control. sions and services, estimated to cost £69,433, Distribution W orks. — Obsolete switchgear are being carried out by the London and Home is to be replaced at three substations at a cost of Counties J.E.A . £8,438, six substations are to be built to meet Loans Sanctioned. —Loans sanctioned rapid growth of load (£34,835) and supplies recently include £15,000 for cookers, £10,000 'afforded to new housing estates at Little Neston for consumers’ electrical apparatus, £50,000 for and Brackenwood (£21,638). mains and services, £30,000 for substations and equipment and £ 10,000 for meters. Cannock.— Increase in Charges. — In our October 25th issue the increase in charges to Mansfield.— Colliery Supply. — T he C o r­ ordinary consumers was given incorrectly as poration Electricity Committee has obtained 3 per cent instead of 5 per cent. sanction to borrow £20,400 for supplying the Cardiff.— Extensions. — The Electricity Com­ Mansfield colliery. mittee has approved a number of supply ex­ Rotherham .—New Feeder.— At a cost of tensions, including those to the Renold & £14,000 the Electricity Committee is to provide Coventry Chain Co., Currans Yard (£1,649), an additional feeder to Wincobank. and 206 houses on the Ton-yr-Ywen estate Scarborough.—Loans Sanctioned.— Sanction (£2,561). An additional transformer at Roath has been received to borrow £11,448 for mains power station will cost £19,761. and services, £2,000 for meters and £4,765 for Clitheroe.— Supply Extension. — T h e E le c ­ substations and equipment. tricity Committee is affording a supply of Southwark.— D e f i c i t . —The Electricity Com­ electricity to Holden Clough. mittee reports a net deficit of £14,378 for the Cupar.— S treet Lighting Com pleted. — C o m ­ year. pletion of Cupar’s electric street lighting was Stoke Newington.—Purchase of Cookers.— marked by a dinner on October 24th, when the Having considered particulars of the latest Metropolitan-Vickers Electrical Co., Ltd., which models of cookers the Electricity Committee has carried out the installation in record time, has placed an order for 300 offered by the entertained town councillors and county officials. General Electric Co., Ltd., at £19 6s. 4d. each. Darlington.— Housing Supply. — The T o w n This type is equipped with automatic control, Council has received sanction to borrow £1,416 two hot-plates and a griller. for the supply of electricity to a temporary Loss on Year’s W orking.— A net loss of housing site in Lansdowne Road. £3,881 fo r the year ended M a rch 31st last is E a lin g .— L o a n s . — Sanction has been obtained reported by the Electricity Committee. by the Electricity Com m ittee to borrow £9,800 Swindon.—A llocation of Surplus.— There for m a i n s , £27,300 for substation equipment was a surplus of £26,615 on the past year’s and £3 000 for transformer modifications. working of the electricity undertaking and the Falkirk. — Ash-handling Plant. — Tenders accumulated surplus now amounts to £36,760. are to be obtained for the installation of a The Town Council has decided to transfer £1,000 new ash-handling plant at the electricity works to the reserve fund, £13,150 to the general rate at a n e s ti m a t e d cost o f £4,562. fund, and carry the remainder forward. 7 5 0 E l e c t r i c a l R e v i e w Novem ber 8, 1946

W a lla se y.— Ripple C ontrol. — The Electricity River have been drawn up on instructions from Committee has obtained sanction to borrow the Italian state-owned railways. The plant £12,225 for ripple control equipment. would provide energy for the electrification of the Turin-Venice and Bologna-Padua railway W a ls a ll.—Y ear’s Surplus.— The Electricity Committee reports a net profit for the year of lines. Plans have also been prepared for another hydro-electric plant in the valley of the £15,553, of which £4,534 has been contributed to rate relief. Limenta river in the Bolognese Appenines to provide energy both for the railways and for Winchester. — Lower Charges. — R eco m ­ agriculture.— Reuter. mended reductions in the lighting and heating N orw ay.— Large New Power Station. flat rates and the “ all in ” domestic and business The Nore II power station, the building of which tariffs will in effect restore the charges to those started before the war is starting normal pro­ operating before the increases made in April, duction after trial operations. The plant has a 1940. capacity of 225,000 kW and is therefore one of Yorkshire.— Reduced Charges. — The Y o r k ­ the biggest in Europe.— Reuter. shire Electric Power Co. has announced its decision to reduce charges for electricity supplied under agreements including a coal clause. The TRANSPORT reduction will be effective from January 1st Brighton. — Additional Trolley-bus Ser­ this year and consumers affected will be notified v i c e s . — The Corporation Transport Committee by the company, as soon as possible, of all is seeking powers for the provision of more necessary details. trolley-bus services. B u ry .— Buses to Replace Tram s. —-A t a Overseas meeting of the Town Council it was stated that China.—Condition of Power Stations.— if trolley-buses replaced the trams on the The Compagnie Française de Tramways et Walmersley-Tottington route, a re-alignment of d’Eclairage Electriques de Shanghai reports the overhead equipment would be involved. that, although its plant and installations suffered To renew the overhead equipment would cost no damage during the war, the Japanese carried something like £41,000 and the trolley-buses off a large quantity of material from the power required would cost approximately £80,000. station. It has, however, been found possible The Transport Committee has decided to to continue operations, although this is proving replace the trams with oil-engine buses which, very difficult owing to the depreciation of the it was stated, could be operated at 0-67d. a mile value of Chinese money and the confused cheaper than trolley-buses. political situation ruling in Shanghai. The Cardiff.— T rolley-buses. —The Corporation Compagnie de Tramways et d’Eclairage de has obtained powers to provide trolley-bus Tientsin reports that its plant and installations services along a route commencing in Queen were seized during the war by the Japanese, Street. who dismissed the whole of the European staff. Glasgow.—New Generating Plant.— The The property was handed back to the Chinese Corporation Transport Committee has decided authorities in November of last year but so far to renew its application to the Electricity Com­ the owning company, owing to the unacceptable missioners for sanction to the installation at conditions laid down by the Chinese, has not Pinkston power station of a new 25,000-kW been able to regain possession of its property turbo-alternator. nor to issue any accounts since the end of 1939. North-East Coast.— Railway Electrifica­ Cyprus. — Ten-Year Plan. — The Cyprus tion Plans. —The L.N.E.R. Co. has given an Government has published a ten-year £6,000,000 undertaking to Sunderland Corporation to development plan, including an island-wide electrify the Sunderland-Newcastle and the electrification scheme which may cost £3,359,000. Sunderland-South Shields lines as soon as R e u te r. circumstances permit. E ire .—Completion of Pollaphuca Station. — It is expected that the Liffey hydro-electric RADIO and TELEPHONY station at Pollaphuca will be in full com­ London.—Overhead W ires.— The General mission at Christmas, the second 15,000-kW Purposes Committee of the Poplar Borough generator being now at the test stage. With Council reports on the increasing number of both generators in operation, together with the overhead wires which are being erected in the station at Golden Falls, there will be from 40 borough in connection with the operation of to 45 million kWh annually at the disposal of radio relay services, the practice reaching the Electricity Supply Board. Work continues proportions not envisaged at the time of the on the erection of the 4,000-kW plant at Leixlip, passing o f the O verground W ire s A ct, 1933. but this will not be ready for operation before It expresses the view that legislation is needed 1948. to enable local authorities to exercise a greater Ita ly .— H ydro-Electric Schemes. — Plans for measure of control in connection with such the construction of a hydro-electric plant using installations. The matter has been referred to the waters of the higher reaches of the Rienta the Metropolitan Boroughs Standing Committee. November 8, 1946 E l e c t r i c a l R e v ie w 751

Local Exhibitions Recent Electrical Displays

A N exhibition was held recently in Spen- Covering all aspects of municipal activity an borough at which a wide range of domestic exhibition was held at Aberdeen recently, under electrical apparatus was shown to the-public. the auspices of the National Association of Local The E.L.M.A. stand demonstrating the main features of good lighting occupied a prominent place, as did the mech­ anical unit lent by Dorman & Smith which demonstrated the making and breaking of the switch controlling

Section of the Spenbor- ough electrical exhibition the new universal socket outlet. In support of the exhibition a film show was given, the pro­ gramme including the E.D.A. film, “ Their Invisible Inheritance.” At a pre-view of the exhibition [ which was attended by architects, electrical and building Government Officers, and attracted considerable contractors, and members and officials of the interest, being visited by over 32,000 people. Spenborough Council, Councillor G. T. Ellison, The Aberdeen Corporation Electricity Depart- chairman of the Electricity Committee, spoke ment occupied stands which depicted the on the work of the Department. He was generation, distribution and utilization of electricity. The genera­ tion and distribution stand, shown .in the accompanying picture, had models o f steam- raising equipment and a turbo-alternator, together with distribu­ tion equipment including

Part of the electrical display at the Aberdeen e x h ib itio n

a 6-kV ring main isolator and a feeder pillar. The utilization stand, besides exhibiting the latest domestic appliances, had additional attractions in a variable speed, belt- coupled motor-genera- supported by the chairman of the Council, tor, with a drum-type controller operated by Councillor L. Mallard, J.P. The exhibition was younger members of the public. A photo­ organized by Mr. N. Ashton, engineer and graphic record of the history of the Aberdeen manager, and members of his staff. undertaking was also shown. Mr. L. B. 7 5 2 E l e c t r i c a l R e v i e w N ovem ber 8, 1946

Perkins, consumers’ engineer, was responsible Before the carnival a competition for all house­ for the arrangement of the stands, under the wives in the area was organized in which they direction of the city electrical engineer, Mr. were invited to send in their favourite recipes. A. Gardner. These were judged by the members of a To publicize the personal aspect of the Luton “ Brains Trust ” and the winners received their Corporation Electricity Department’s service as prizes from the Mayoress after the Cookery “ Brains Trust.” The first prize was an electric iron presented by the Electricity Department and other prizes were LUTON presented by the E. A. W . iovuc nOCtttl #*0« m&a *** **ï A selection of recipes was printed and sold

The Mayor and Mayoress with the chairman of the Electricity Committee, * x t x i i ! at the “ Electricity in the r . Home ” exhibition at L u t o n i- fA>CMAt^SNCiO e s s s s s * «1«

'tvERve»DV * 2Z during the carnival. The electricity showroom was thronged during all the demonstrations and the Council Chamber was packed with an appreciative audience of women during the a means of assisting the tenants of temporary Cookery “ Brains Trust.” The demonstrations and permanent houses to get the best value from were given by Miss Weedon, of the Jackson expenditure on electricity, an “ Electricity in Electric Stove Co., Miss Leader of the G.E.C. the Home ” exhibition has just been held. The and Mrs. Clare and Miss Scripps of Alfred charts shown in the accompanying illustration Bird & Sons. indicate the past ten years’ growth in the use of motor cars and electric cookers, both of Southampton Jubilee which are produced at Luton. Staff Celebration Dinner Devon Farming Exhibition ■ N connection with the jubilee of the South- There was a large attendance at a four-day ampton Corporation electricity undertaking exhibition, “ Electricity on the Farm,” which (reference to which was made in our issue of concluded at the Drill Hall, Bideford, North May 3rd last) a celebration dinner was held at Devon, on October l'9th. It had been organized the Guildhall, Southampton, on October 28th by the Bideford and District Electricity Supply at which the staff and employees together with Co., and drew visitors from all over North their wives and retired employees attended. Devon’s agricultural area, as well as from the Mr. W . G. Turner, borough electrical engineer, market towns of Barnstaple, South Molton and presided. Torrington. Interest was aroused by an In proposing the toast of the staff and em­ electric corn mill and the latest types of steriliz­ ployees, Councillor R. J. Stranger, the Mayor, ing apparatus, and an official of the company said that sales were now 140 million kW h per told a press representative during the exhibition annum; there were nearly 60,000 consumers in that farmers were showing particularly keen an area of 44 sq miles. He paid a tribute to interest in the application of electric motors to Mr. Turner for his efficient management of the farm tools. Cookery demonstrations were undertaking, and to the technical staff, especially held and agricultural films shown. A short for their service during the bad periods of the account of the exhibition was broadcast in the w ar. Western programme on October 15th by Mr. Mr. Turner, responding, said that the staff A. Porter, of the Devon County branch of had carried out their duties with ability. W ith­ the National Farmers’ Union. out their loyal co-operation the development, operation and efficiency of the undertaking Tunbridge Wells Cookery Carnival could not have been achieved. Mr. W . Deacon A cookery carnival organized by the Tun­ (vice-chairman, Works Whitley Committee) bridge Wells Branch of the Electrical Associa­ proposed the toast of the Electricity Committee tion for Women was held in the Corporation and guests and Aid. G. B. Bascomb (chairman electricity showroom on October 29th and 30th. of the Electricity Committee) responded. November 8, 1946 E l e c t r i c a l R e v ie w 7 5 3 Concrete Poles Demonstration Tests at Makers’ Works in Lincolnshire rB IH E world shortage of timber which is doubled in area, is manufacturing a variety expected to persist for some years, and of concrete products on the conveyor-line the scarcity of wood poles in Britain and system by mould-casting as well as pre­ Eire have combined to revive interest in the stressing methods with the aid of machinery employment of ferro-concrete posts for that mixes the aggregate in a manner which supporting overhead minimizes the water- power lines. to-cement ratio while Reinforced - concrete the casting moulds poles have been in use themselves are electric­ for that purpose in this ally vibrated to ensure country for some six­ intimate bonding of teen years. Lighter the concrete with its types of dependable steel reinforcing mem­ consistency may be­ bers. Both gravel and come practicable by cement are obtainable reason of the line- in bulk locally. constructional experi­ The overhead-line ence of Dowsett poles are formed to the Engineering Construc­ design of Mr. G. I. tion, Ltd., in associa­ Faulkner Nuttall (con­ tion with modern sultant) as formerly manufacturing facil­ made by Ferro Con­ ities now provided at Deflection of pole top under transverse test stress crete and Electrical the Tallington factory Construction, Ltd. of Dow-Mac (Products), Ltd., near Stam­ They are rectangular in shape and completely ford in Lincolnshire, where demonstration cored through the upper section, thus pre­ pole tests were witnessed last week by senting an appearance similar to lattice steel representatives of the Electricity Commis­ poles, the slanting members being particularly sioners, the Electricity Supply Boards of valuable during transit. The cored sections Northern Ireland and Eire, consulting reduce weight and permit the insertion of engineers, power companies, cable makers crowbars for turning the poles over when and the G.P.O. moving them; they also serve as steps for The factory, which reached full production climbing during line erection. Core holes in 1943-44 and has this year been almost are provided for bolting fittings to the pole-top and, if desired, a stranded copper earthing conductor is cast longitudinally into the pole, so obviating the risk of breakage to which an exposed wire is subject. The specimen poles tested last week, seventeen days after casting, were constructed to comply with B.S. 607/1946 requirements. They were 28 ft long, mounted horizontally, and secured 5 ft from the butt; designed for a minimum ultimate transverse load of 1,250 lb, representing a working load factor of two (625 lb) 2 ft from the top of the pole. Some specimens were tested on their major axes and others on the minor, the stress being applied transversely, as illustrated, in stepped increases up to 100 per cent working load, then maintained for two minutes before being further increased to the proof stress, repre­ Paint m arks indicating even spacing of hair cracks senting 120 per cent of the working load, 754 E l e c t r i c a l R e v ie w Novem ber 8, 1946 which caused hardly measurable permanent Installations Section. “ Electrical Control of set. The second illustration indicates the Dangerous Machinery and Processes,” by W. regularity of hair-crack spacing in the lower Fordham Cooper. S w a n s e a .— I. E . E . West Wales (Swansea) section of the pole. Subsequent stressing Sub-Centre. Address by R. W . Biles, chairman beyond 200 per cent of the ultimate designed of Western Centre. working load finally caused failure at 1,610 lb, Southam pton. — Polygon Hotel, 6.30 p.m. a 3-5-in. permanent set resulting from the Institution of Rubber Industry, Southern 20-in. deflection of the top of the pole. Section. Discussion on Electrical Test Methods o f B .S . 903. M anchester. —Engineers’ Club, Albert Forthcoming Events Square, 6.30 p.m. Women’s Engineering Monday, November 11th.— C a r d i f f . — A t Society, Manchester Branch. “ Textile Engineer­ the South Wales Institute of Engineers, Park ing,” by J. S. Taylor. Place, 5 p.m. I.E.E. Western Centre. “ Power Birmingham. —Imperial Hotel, 6.30 p.m. Supplies to Generating Station Auxiliary Institution of Heating and Ventilating Engineers, Services,” by S. Szwander. Birmingham and District Branch. “ Industrial New castle-on-Tyne. —Neville Hall, West- Ventilation Research,” by R. Poole. gate Road, 6.15 p.m. I.E.E. North-Eastern Friday, November 15th.— L o n d o n . — Ju n io r Centre. “ Engineering Principles Applied to Institution of Engineers, 6.30 p.m. Annual the Design of Domestic Water-Heating Installa­ general meeting. tions of the Solid-Fuel/Electric Type,” by Caxton Hall, Westminster, S.W.l, Diesel R. Grierson and Forbes Jackson. Engine Users’ Association. Informal discussion B r a d f o r d . — Tech nical College, 7.15 p.m. on “ Operating Problems.” Bradford Engineering Society. Charnock St. Stephen’s Tavern, Bridge Street, West­ Night. “ Engineering in Physics,” by H. G. minster, S.W.l, 6.30 p.m. E.P.E.A. Meter H o w ell. Engineers’ Group (Southern Division). “ Some M anchester. — At 16, St. Mary’s Parsonage, Notes on Meter Errors,” by G. F. Tagg. 7 p.m. Junior Institution of Engineers, North- New castle-on-Tyne. — King’s College, 6.30 Western Section. “ Modern Factory Lighting,” p.m. I.E.E. North-Eastern Students’ Section. by J. W . Howell. “ High-Frequency Carrier Telephony,” by Tuesday, November 12th.— M anchester. — M r. M o o n . Engineers’ Club, Albert Square, 6 p.m. I.E.E. Saturday, November 16th.— I.E.E. Tees-side North-Western Centre Measurements Group. Sub-Centre, 3 p.m. Visit to Darlington power “ A Precision A.C./D.C. Comparator for Power station. and Voltage Measurements,” by G. F. Shotter L o n d o n . — I.E.E. London Students’ Section, and H. D. Hawkes. 3 p.m. Visit to Willesden power station of the L e e d s . —Corporation Electricity Depart­ Northmet Power Co. ment, Whitehall Road, 6 p.m. I.E.E. North Monday, November 18th. — L o n d o n . — Midland Centre. “ Electrical Control of Institution of Electrical Engineers, London Dangerous Machinery and Processes,” by W. Students’ Section, 7 p.m. The Students’ Fordham Cooper. Lecture. “ The Trend of Modern Tele­ G l a s g o w . — Royal Technical College, communication,” by A. H. Mumford. 6.15 p.m . I. E . E . Scottish Centre. Paper Birmingham. — Grand Hotel. Birmingham by R. Grierson and Forbes Jackson (see above.) Electric Club. “ The German Electric Supply L o n d o n . — At the Institution of Electrical System, 1933-1946,” b y G . R . Peterson. Engineers, Savoy Place, W .C.2, 5 p.m. Institu­ Tuesday, November 19th.— L o n d o n . — tion of Post Office Electrical Engineers. Magnet House, Kingsway, W.C.2, 6.15 p.m. “ Economic Telephone Exchange Area Association of Supervising Electrical Engineers. Planning,” by H. T. A. Sharpe. “ Notes on Present-day Cable Practice,” by Wednesday, November 13th.—London.—- J. R. Harding. (Joint meeting with the Institu­ Institution of Electrical Engineers, 5.30 p.m. tion of Engineers-in-Charge.) Transmission Section. “ The Development of the Gas-Cushion Cable System for the Highest Voltages,” by T. R. P. Harrison. Nautical Instrument Makers W olverhampton. —Victoria Hotel, 7 p.m. r§7HE twenty-eighth annual general meeting Electrical Power Engineers’ Association. Mid­ *- of the British Nautical Instrument Trade land Technical Group. “ Maximum Demand Association was held at York on October 31st. Control,” by A. H. Gray. A presentation was made to Mr. Albert Cater, Birmingham.— James Watt Memorial Insti­ who had completed three-and-a-half years’ tute. 6.45 p.m. I.E.E. South Midlands Students’ service as president. Section. “ Lightning Protection of High-Voltage The president and vice-president for 1946-47 Systems,” by J. Mitchell. are Mr. Francis Hughes (Marine Instruments, Thursday, November 14th.— L o n d o n . — Ltd.) and Mr. Leslie Harris (Lilley & Reynolds' Institution of Electrical Engineers, 5.30 p.m. Ltd.). November 8, 1946 E l e c t r i c a l R e v ie w 7 5 5 Circuit-Breaker Operation Air-blast and Resistance Switching

T|W O papers were submitted at this dynamic conditions at the nozzle and the week’s meeting in London of the minimum insulation level of the contacts Institution of Electrical Engineers. The first must be carefully determined. of them was concerned with arc extinction in The authors do not consider that resistance air-blast circuit-breakers, which has been the switching necessarily renders the breaker subject of research by A. Reyrolle & Co., independent of circuit severity. Multi-breaks Ltd., for the past eighteen years. The authors, greatly enhance performance; the best Messrs. A. A llan and D. F. Amer, have number to use is determined for any given shown that nitrogen is equivalent in properties duty by practical and economic con­ to compressed air. Some investigators siderations. It is possible to substantially consider carbon dioxide to be slightly better ensure equal pressure distribution on than air, but it is extremely difficult to control multi-breaks, which j ustifies part testing. owing to freezing at valves and in restricted passages. Resistance Switching Other investigators have indicated that In parallel with the development of small- hydrogen w ill increase the breaking capacity, oil-volume and air-blast types, continuous but its cost and that of the ancillary apparatus progress has been made in England and the are a serious objection. Breaking capacity United States with the dead-tank oil circuit should also be increased by the use of breaker. The authors of the second paper, “ Freon ” because of its great electric M e s s r s . H . E . C o x and T . W . W i l c o x strength, but it is expensive and is decom­ (B.T.H. Co.), claim that improvement of arc posed by the arc into acid-forming elements. control pots has so reduced the fire hazard that it is now no greater than the risk to Air Turbulator which wooden houses or warehouses full of The greater part of the research which this textiles are liable. Both arc duration and total paper represents concerns the aerodynamic break time have also been reduced and design of circuit breakers; its authors describe compressed air mechanism for switch actua­ the development of an “ air turbulator ” tion is declared to have now made the oil and its application to 66- and 132-kV breaker a match for the air-blast type in breakers. This device, which includes means respect of speed of operation and instan­ of controlling the arc length, comprises taneous automatic reclosing cycles. three basic components: a metal arcing Cost considerations are claimed over­ chamber with a nozzle and an arcing elec­ whelmingly to favour the dead-tank oil trode, constituting the upper terminal; a breaker when assessed, not alone, but com­ fixed arcing electrode near the orifice of the plete with all its associated equipment. This nozzle, constituting the lower term inal; and claim is based on the fact that primary a laterally movable bridging contact. insulation for both the current transformers All are supported by an insulating tube and capacitance voltage dividers already through which the blast of air passes. The exists in the oil-breaker terminal bushings, bridging contact is attached to a piston, whereas it has to be provided separately for which moves to the open position on the small-oil-volume and air-blast types. admission of compressed air to the arcing Side-vented Explosion Pots chamber and thus draws an arc between the central (fixed) electrode and the moving The paper reviews the improvement of contact piece. Initiation of the lateral arc in performance of side-vented explosion pots the “ turbulator ” causes a pressure dis­ when they are shunted by resistors and turbance in the flow of compressed air, thus subsequently explains how the latter can also transferring the hot gas (arc) in 1/400 second be utilized to even the voltage distribution to a central position along the axis of the over several pots in series. A description is nozzles, so that it offers the maximum drag included of the incorporation of such resistors to the air flow. . in a 132-kV switch rated at 2,500 M V A . The performance, which is definitely The effect of the resistors when breaking predictable, is greatly affected by the aero­ small currents in inductive and capacitive 7 5 6 E l e c t r i c a l .R e v ie w Novem ber 8, 1946

circuits is discussed in detail. This is followed The conclusions are that resistance switch­ by a commentary on the validity of testing ing improves the operation of the explosion separately one pole of a three-phase separate- pot at critical current values, when arc tank breaker, having two breaks per pole, length and duration are greatest and therefore by applying the full three-phase output of the constitute a design limit. It is claimed to test plant. The third terminal is obtained by enable complete control to be exercised over bringing out through the tank wall a con­ the distribution of the restriking transient nection from the moving crossbar. Actual voltage on individual pots of a series. It performances are illustrated with test results reduces switching over-voltages, whether (Switchgear Testing Co.) from one pole of a caused by rupturing capacitive or small three-phase, 132-kV, 2,500-MVA breaker, inductive currents and also reduces switching thus rendering it possible greatly to extend surges on transformers and other inductive the proving capacity of testing plant. ap p a ratu s. Fluorescent Train Lighting* Experiments at Sheffield

H A T is claimed to be the first use in this i The lamp fittings for the upper deck and country of fluorescent lighting on a tram- platform are of the surface-mounting type and car was made during the Sheffield Corporation accommodate the control auxiliaries; in the Transport Jubilee. These tests in service are saloon they are fully recessed. One fitting in intended to assess the relative merits of the the saloon on each side of the car is fitted with lamps on a.c. and d.c. circuits. The former are a white opal “ Perspex ” reflector to illuminate supplied at 110-V and 500 cycles per sec from a the side destination indicators. The fluorescent motor-driven inductor alternator, while the d.c. tube lamps throughout the installation are the lamps are fed from the 600-V traction system. Metrovick experimental 20-W warm-white, bi-pin The motor generator is mounted on rubber supports and suspended from the car underframe. On the a.c. circuit eleven fluorescent lamps are fed in parallel and, for starting, individual straight resonance is employed. Nine of these lamps illuminate the major part of the upper deck and the remaining two lamps the destination indicator at one end of the car. A rotary switch on the platform bulkhead controls the d.c. motor driving the generator. The motor-man’s dashlight at each end of the car is an incandescent lamp supplied from the a.c. circuit. The d.c. lighting is in three separate circuits of six, five and four fluorescent lamps, which are Sheffield tram car with fluorescent lighting stabilized by two, three and two incandescent lamps, respectively, with a resist­ pattern, 2 ft. in length by l i in. in diameter. ance in the last case. The lamps are started Comments of the travelling public have been by chokes and thermal switches. Eight lamps most favourable. The level of illumination is illuminate the saloon, two the destination approximately 10 lumens per sq ft, with a high indicator at the other end of the car, two the degree of uniformity and freedom from glare. platform, and three complete the lighting of the Acknowledgments are due to Mr. R. C. Moore upper deck. In order to avoid the dark-end (general manager, Sheffield Corporation Trans­ effect which is liable to occur on continuous port Department) for permission to reproduce running with the current in one direction, a the accompanying photograph, and to Mr. rotary switch on the platform reverses the S. W . A. Sturman, A .M .I.E.E., the rolling-stock polarity of the supply every time the lights are engineer. The equipment was supplied by the switched on. The seven stabilizing lamps (of Metropolitan-Vickers Electrical Co., which the series-burning type) are applied to the signal worked out the scheme in collaboration with the lights and air brake gauges. Corporation engineers. November 8, 1 9 4 6 E l e c t r ic a l R e v ie w 7 5 7 Commercial Vehicle Hire Responsibility for Repairs

By F. £. S u g d e n , A.C.I.S., Barrister-at-Law

WING to the high cost of vehicles and issued what is termed an " interpleader." The « their uncertainty of performance many Master of the Court decided eventually that electrical contractors prefer to hire or hire- the lien could not be enforced. purchase vehicles from large motor concerns. The Court of Appeal further held that the Many vehicles now actually have the hirer's authority to the trader had been duly deter­ name prominently displayed, the owner's mined under the terms of the agreement, name being very inconspicuous. This prac­ and at the time when the trader took the car tice has given rise to many knotty points, to the appellants' garage to be repaired, he particularly where the van comes to grief, had no more right to the car than a thief not through a collision on the road but owing would have. Therefore the appellants who to some mechanical defect which in many had executed the work, could not establish instances could not be foreseen. Defects a lien on the car against the owners, who have to be remedied in due course and the were no parties to placing it with them for work has to be paid for. repairs. The Lord Chief Justice, Lord Goddard, Recent Court Case stated in his judgment that an arrangement Recently an important case arose bearing between the owner and the hirer, that is the on the situation; briefly the facts are these: trader, that the hirer should not be entitled In accordance with a hire-purchase agreement to create a lien did not affect the repairer. dated August 1st, 1945, the respondent in the A repairer had a lien although the owner had case let on hire a motor vehicle to a trader purported to limit the hirer’s authority to on the terms, inter alia, that the trader was create a lien in that way. Once an artificer to keep the vehicle in good order, repair and exercised his art upon goods the law gave condition at his own expense. Incidentally him a lien upon those goods which he could it was understood that the trader was not to exercise against the owner of the goods, if have any authority to pledge the cred't of the latter was the person who had placed owner of the vehicle for repair purposes or to the goods with him or had authorized create a lien, that is a legal claim, in respect another person to place the goods with the of such repairs. artificer. On December 12th, 1945, the trader being Effect of Judgment at that time in arrears in his payments Briefly this case lays down that the Com­ to the owner of the vehicle, the owner mon Law lien arising on execution of repairs decided to terminate the agreement by letter to a car is only enforceable against the owner dated December 19th, 1945, and issued a writ if the hirer has authority to send the car for against the trader for the arrears, at the same repair, and that such authority is normally time claiming the return of the vehicle. On implied while the hirer is in lawful possession December 27th, 1945, the trader, who had of the car. When the hire-purchase agree­ disregarded the notice, met with an accident ment has terminated, however, the possession and left the car at the appellants’ garage for is against the will of the owner and it is held repair. That is to say, at a third party’s that a repairer cannot exercise a lien for garage. repairs which the hirer has no longer any Third Party Action authority to have executed. On January 30th, 1946, judgment was In my opinion this judgment cuts across obtained against the trader by the respondent, the present system of hire-purchase governed who obtained leave to obtain recovery, and by the Hire Purchase Act, 1938, which lays on March 1st, the sheriff levied execution at down that the legal ownership of the property the appellants’ garage in respect of that does not pass from the vendor to the pur­ judgment, to recover the hired vehicle. The chaser or hirer until the final instalment has appellants, the people who had executed been paid. Incidentally, the hirer must not the repairs, claimed an artificer's lien for the part with possession of these goods during amount of the repairs and the sheriff com­ the time that the hire-purchase agreement is menced a third party procedure action and in operation. 7 5 8 E l e c t r i c a l R e v ie w Novem ber 8, 1946 Spain’s Electrical Imports Large Proportion from Switzerland fM^HE Spanish Government has recently pub- appreciably. France, Holland and the United lished the returns of the country’s foreign Kingdom showed more activity. The values of trade for 1945. The accom panying statement imports are given in gold pesetas (45 pesetas gives the values of the principal electrical equal £ 1). imports, with supplying countries, for that According to the British Board of Trade year and the increase or decrease compared with returns, exports of electrical goods and 1944. It w ill be seen that decreases in the apparatus to Spain (not including machinery, imports of power plant of the smaller sizes were separate figures for which are not given) during offset by increases in those of the larger sizes. the first nine months of the current year have

Inc. or dec. Inc. or dec. 1945 1945 Class of Goods and Supplying on 1944 Class of Goods and Supplying on 1944 Pesetas Pesetas Countries Countries Pesetas (000) Pesetas (000) (000) (000;

Dynam os, motors, fans, alterna­ Electrical meters, voltmeters, am­ tors, transformers, starters, meters and electro-medical rheostats and parts up to apparatus— 2,301 ~r 279 5 kg— 349 — 318 From Germany 21 — 518 From Germany 62 — 299 Switzerland ...... 1,476 + 863 „ Switzerland 123 — 28 ,, Sweden 515 -r 291 ,, Great Britain 99 + 86 S wi tchboards— 644 -f- 248 ,, United States.. 24 + 24 From Switzerland 542 -j- 270 Ditto, from 5 to 25 kg — 569 — 409 ,, United States.. 62 4- 61 From Germany 45 — 188 Heaters, cookers, hot-plates, etc.— 63 _ 72 „ Switzerland 333 14 From Switzerland 14 _ 38 „ Sweden 90— 27 ,, France 49 49 ,, United States 34 + 2 Lamps, complete— 113 185 25 100 — 861 356 Ditto, from to kg From United States 69 + 42 From Germany 60 428 „ Great Britain 5 1 „ Switzerland .. 542 66 „ Holland + 28 „ Great Britain 34 + 22 31 ,, United States.. 11 -f 9 Mercury-vapour lamps— 119 ,, Sweden 74 + 47 From Germany 6 — 94 D itto fro m 100 to 500 kg— 1,567 159 „ United States.. 50 + 47 From Germany 107 — 453 ,, Holland 10 + 10 „ Switzerland .. 1,207 + 95 Cables over 1 cm diam .— 127 — 159 „ Great Britain 15 __ ■ From Germany 1 — 125 ,, United States. . 71 ~r 70 „ Great Britain 102 — 56 ,, Sweden 79 -f- 26 Cables not exceeding 1 cm d ia m - 216 + 185 D itto from 500 to 1,000 kg— 825 168 From France 210 -i- 210 From Switzerland 671 4- 373 Insulated wire less than 0.5 m m — 52 + 11 ,, Sweden 93 + 26 From Great Britain 20 -I- 20 D itto from 1,000 to 3,000 kg— 1,206 + 446 „ United States. . 20 • 12 From Switzerland 1,101 + 509 ,, Switzerland 3 _ 3 „ Sweden 62 + 12 Telegraph and telephone apparatus 2,832 T 255 41 United States. . 41 + From Germany 113 1,808 D itto from 3,000 to 5,000 kg— 668 — 299 ,, United States. . 40 16 147 147 From Great Britain . . 4- ,, Great Britain 1,226 1,223 434 „ Switzerland — 491 ,, Sweden 93 United States. . 74 74 112 + ,, Switzerland 492 -f 370 D itto over 5,000 kg— 8,042 4,428 Radio valves— From Switzerland 7,663 -i- 6,348 566 473 Sweden 247 548 From Germany 248 406 ,, United States.. 44 _L 22 Generating sets and rotary con­ _i_ vertors up to 1,000 kg— 204 520 Great Britain 186 185 From Germany 8 — 379 Switches, circuit-breakers, lamp­ „ Switzerland 190 + 113 holders, etc., up to 1 kg— 100 — 170 D itto from 1,000 to 5,000 kg— 87 24 From Germany 3 — 178 From Sweden 28 -L 6 United States. . 10 -f 3 ,, Switzerland 31 — 58 Switzerland 81 -f- 25 D itto over 5,000 kg— 1,904 + 1,604 D itto, 1-100 kg— 1.036 + 170 From Switzerland 1,848 + 1,548 From Germany 42 344 Dry batteries and parts— 2 — 133 ,, Switzerland . . 754 + 406 Accumulatorf— 38 — 66 ,, Sweden 162 + 87 From Sweden 11 — 64 D itto 100 kg and over— 1,633 + 487 ,, United States.. 24 + 18 From Switzerland .. 1,519 844

Business in telegraph and telephone apparatus amounted in value to £506,365 (22,786.425 (which group includes radio receivers) also was pesetas). This was over five times the value in bigger, although there was a decline in radio the corresponding period of last year— £91.795 valves. (4,130,775 pesetas). The comparative figure Germany’s share of the Spanish market was for 1938 (three-quarters of the year’s total) dwindling, but that of Switzerland expanded was £34,272 (1,542,240 pesetas). Novem ber 8, 1946 E l e c t r ic a l R e v ie w 5 9 CONTROL

OF IMPORTANCE TO YOU In order that we may give you the best service under the present difficult conditions we appeal to you to utilise standard equipment; avoid “ frills ” whenever possible. Your co-operation in this respect will enable us to concentrate on standard production with consequent reduction in despatch time. USE “ STANDARD”

A IR B R E A K STAR-DELTA STARTER

Sales BRETTENHAM HOUSE VERITYS Ltd'*9. Headquarters : LANCASTER PLACE, W.C.2 W orks: ASTON, BIRMINGHAM 6

The most efficient, light weight, portable blowers ever built. Martin- dale Super Blow ers are precision built, and carefully balanced to eliminate vibration. Arm atures, windings and field coils are impregnated to withstand use in tropical climates and under the most exact­ ing industrial conditions. \Write for particulars. Martindale Super Blowers are guaranteed for twelve months against faulty workm anship and material. M ARTINDALE ELECTRIC CO. LTD., W ESTMORLAND ROAD, LONDON, N.W.9. Phone : Colindale 8642. Grams : " Commstones, Hyde, London.*1 6 0 E l e c t r i c a l R e v ie w Novem ber 8, 1946

the metal of unique quality

Mallory 73 Beryllium Copper is a non-ferrous alloy having high tensile and fatigue strength, great hardness, good electrical conductivity, and resistance to wear and corrosion. These properties have led to the wide use of Mallory 73 in electrical and precision engineering and in the instrument and radio industries. Complete informative literature has been collated by Mallory metallurgists and this is available by request. MALLORY BERYLLIUM Contact Blades. Helical Springs. Diaphragms and capsules. Instrument hairsprings. Fuse clips. Circuit breaker springs. Bourdon pressure tubes. Snap action switch blades.

JOHNSON, MATTHEY & CO., LIMITED, CONTROLLING— MALLORY METALLURGICAL PRODUCTS LTD., 73 83 HATTON GARDEN, LONDON, E.C.I N ovem ber 8, 1946 E l e c t r i c a l R e v ie w 7 5 9 FIW MIAL SECTIO\ Company News. Stock Exchange Activities. Reports and Dividends debit balance carried forward was increased from £113,110 to £140,561. The board recently Peto Scott Electrical Instruments, Ltd.— requested the Federal authorities to accept Mr. Campbell Jones, the chairman, stated at responsibility for the continuance of the com­ the annual meeting last week that during the pany’s operations by appointing a controller, year an opportunity occurred to take up modern who took up his duties at the end of October. factory accommodation at Weybridge. They had to equip and organize these new works at Glenfield & Kennedy, Ltd., are paying an the same time as the transition was taking unchanged dividend of 5 per cent on the ordinary place from war to peace production, and in shares excluding those newly issued. view of these factors the trading profit for the year of £41,310 compared with the record New Companies profit of £62,400 earned in the previous year Globe & Simpson (National), Ltd.— Registered could not be considered unsatisfactory. The directors felt that the benefits of the up-to-date October 28th. Capital, £20,000. Manufacturers production unit at Weybridge would be felt in and repairers of, and dealers in, magnetos, due course. dynamos, starters, batteries, appliances, etc. Directors: J. A. Duffy and E. B. Wake. Regd. Johnson & Phillips, Ltd.— The directors have office: Pitt Street, Sheffield. resolved to increase the issued share capital of Electrical Installations & Motor Rewinds, Ltd. the company by the issue of 200,000 further — Registered O ctober 28th. Capital, £2,000. ordinary shares of £1 each at a premium of Electrical engineers and contractors, manu­ £2 5s. per share. These shares w ill ra n k p a r i facturers of, and dealers in, dynamos, motors, passu with the existing issued ordinary shares. armatures, etc. Directors: F. P. Abbott and Shareholders registered on October 19th are E. Anderson. Regd. office: 52, Rawthorpe to have the right to an allotment of these Lane, Dalton, Huddersfield. additional shares in the proportion of one new share for every four shares held. The Duplex & Pearson, Ltd.— Registered October subscription list will be closed on November 19th. Capital, £5,000. Manufacturers and 18th. These shares are being issued to finance repairers, importers and exporters of, and part of the capital expenditure on land and dealers in, dynamos, motors, armatures, mag­ buildings, and plant and machinery and also netos, batteries, etc. Directors: A. J. Hicks, to finance the increase in liquid assets, which has J. Pearson, W . Smith and R. J. Boggis. Regd. arisen during recent years and which hitherto office: 63-65, Upper Brook Street, Manchester. has been financed by the company’s bankers. Jack Harvey, Ltd.—Registered October J. & F. Stone Lighting and Radio, Ltd.— 24th. Capital, £7,000. Manufacturers of, and In the course of his speech at the annual meeting dealers in, electrical and mechanical apparatus, held on October 30th Mr. N. W. Wild (chair­ accessories and components, particularly wire­ man) said that they had been able to re-open a less loudspeakers, sets, etc. J. W . H. Harvey is number of their branches which were closed the first director. Regd. office: 7 and 9, South during the war. The turnover of the retailing Street, Havant, Hants. business had increased substantially and returns f. B. R. Electrical, Ltd.— Registered Octooer for the current year continued to show improve­ 23rd. Capital, £500. Electrical, radio and m ent mechanical engineers, etc. Subscribers: R. H. Crabtree Electrical Industries, Ltd., reports a Tuck and J. H. H. Russell, both of 109, Great net profit of the manufacturing subsidiary of Russell Street, W .C .l. Secretary: R. H. Tuck. £107,178 fo r the year ended Ju ly 31st as com ­ Park, Gate & Co., Ltd.— Registered October pared with £77,982 for the preceding year. 23rd. Capital, £1,000. Electrical engineers and The ordinary distribution for the year is main­ contractors, etc. Directors: G. W. S. Park tained at 17| per cent by a final dividend of (chairman), E. Gate and J. Burrow. Regd. 5 per cent and a bonus of I k per cent. office: 9a, Fisher Street, Carlisle. Richard Johnson & Nephew, Ltd., have Electric Utilities, Ltd.— Registered October declared an interim dividend of 3£ per cent. No 24th. Capital, £1,000. Electrical and mechanical interim was paid in the previous year, but engineers, etc. Directors: F. A. French, A. the final payment was 9 per cent. W . Hemmings, M. S. Neville and F. V. Wiggett. The Para Electric Railways & Lighting Co., Secretary: T. J. Williams. Regd. office: Bridge Ltd., reports a gross revenue for the year to House, Christchurch, Hants. November 30th, 1945, of £218,713 (against Tower Electric Co. (London), Ltd.— Registered £221 856), and there was a net working loss on October 23rd. Capital, £100. To acquire the the year of £24,226 (£17,517). After providing business of a radio and electrical engineer and for London expenses, directors’ fees, etc., the contractor carried on by P. E. L. Mitchell at 7 6 0 E l e c t r i c a l R e v ie w Novem ber 8, 1946

25a and 27, Holland Street, Kensington, W . 8. television sets. Secretary: C. Johnson. Regd. Directors: P. E. L. Mitchell and W. J. Orpin. office: Mossburn Buildings, Stamford New Secretary: W. J. Orpin. Regd. office: 25a, Road, Altrincham. Holland Street, Kensington, W . 8. Gray & Barr, Ltd. -Registered October 16th. ,H. Millwood, Ltd.— Registered October 25th. Capital, £1,000. Manufacturers and repairers of, Capital, £500. Electrical engineers and con­ and dealers in, electrical and mechanical appar­ tractors, etc. Directors: H. Millwood and B. atus and accessories and components, wireless Millwood. Regd. office: 5, Churchbury Lane, sets, etc. D ire c to rs : M . S. Bark er, M rs. M . R. Enfield, Middlesex. Barker and R. M. Barker. Regd. office: 140, R. C. W . Ballinger, Ltd.— Registered October Morley Hill, Enfield, Middlesex. 18th. Capital, £1,000. To acquire the business Electric Boiling Plates, Ltd.— Registered of an electrical engineer and contractor carried October 17th. Capital, £7,000. Electrical and on by R. C. W . Ballinger at 33, Liverpool Road, general and mechanical engineers, manufacturers Trading Estate, Slough. Directors: R. C. W. of electrical apparatus, etc. Solicitors : Herbert Ballinger and P. W. Ballinger. Regd. office: S m ith & Co., 62, L o n d o n W a ll, E .C .2 . 33, Liverpool Road, Trading Estate, Slough. Autronic Developments, Ltd.— Registered Car Electrical (Finchley), Ltd.— Registered October 17th. Capital, £1,000. Manufacturers October 7th. Capital, £5,000. Electrical equip­ of, and dealers in, electrical and mechanical ment specialists, manufacturers of, and dealers in, apparatus, etc. Directors: E. T. Williams, batteries, accumulators, magnetos, dynamos, G. N. de T. Pownall and R. J. Elsome-Jones. etc. Permanent directors: W . W. Clark, L. J. Regd. office: 63, The Strand, Cheltenham. Stinton and R. A. James. Regd. office: 1003, Colley & Co., Ltd .— Registered O ctober 18th. High Road, Finchley, N.12. Capital, £2,000. Electrical engineers and general Horwood-Cranston, Ltd.— Registered October electrical installation contractors, etc. Directors: 8th. Capital, £3,000. Manufacturers of, and G. MacFarlane and H. W. Blackburn. dealers in, radio, television and electrical appara­ Secretary: S. C. Brannon. Regd. office: 51, tus, appliances and accessories. Directors: Lambs Conduit Street, W .C.l. J. W. Horwood and W. M. Cranston. Regd. Electric Vehicles (Western), Ltd.— Registered office: Scienta Works, Harwich, Essex. October 15th. Capital, £500. Electric vehicle Green Electrical & Engineering Co., Ltd.— suppliers and repairers, etc. Permanent direc­ Registered October 15th. Capital, £2,000. tors : Mrs. F. K. J. North and A. North. To acquire the business of an electrical engineer Regd. office: 5, St. M ary’s Road East, Newquay. carried on by L. C. Miles at Laburnum Farm, Arthur Cozens, Ltd.— Registered October Seacroft, Leeds, as the “ Green Electrical & 15th. Capital, £5,000. Electrical engineers and Engineering Co.” Directors: H. Clarkson and L. contractors, radio engineers, etc. Directors: C. Miles. Regd. office: 35, Burley Street, Leeds. Mrs. F. K. Cozens, E. G. Norman and G. H. Electric Maintenance & Repair Co., Ltd.— Ross. Regd. office: Queen’s Road, Ascot. Registered October 22nd. Capital, £3,000. Chevron Electric Co., Ltd.— Registered October To acquire the business of electrical maintenance 23rd. Capital, £1,800. To acquire the business and repairs now carried on by A. E. Mason at of a dealer in electrical apparatus carried on by 72, Summer Lane, Birmingham, as Electric Samuel Best at 5a, Salop Street, Wolverhampton. Maintenance and Repair Co. Directors: A. E. Directors: S. Best and A. J. Groves. Regd. Mason and W. A. Mason. Regd. office: 72, office: 5a, Salop Street, Wolverhampton. Summer Lane, Birmingham, 19. Beers Bros., Ltd.— Registered October 22nd. Russell Bros. & Brown, Ltd.— Registered Capital, £1,000. Electrical engineers and con­ October 16th. Capital, £1,000. Manufacturers tractors, etc. Directors: D. B. Fletcher, E. H. of, and dealers in, electrical plant and accessories, Beers and R. J. Corner. Regd. office: Copthall wireless and television requisites. Directors: House, Copthall Avenue, E.C.2. Olive M. Russell, J. E. Russell and J. A. Brown. Regd. office: 4, Ferriby Road, Sheffield, 6. Bankruptcies K. E. Bader, electrical equipment manu­ Robert Lyon, Ltd.— Registered October 18th. facturer, late of Westmoreland Road, Hendon. Capital, £1,000. Insulation engineers and — At the London Bankruptcy Court on October electrical contractors, etc. Directors : R. Lyon, 24th an order of discharge was granted subject R. R. Lyon and A. J. Lyon. Regd. office: to a suspension of nine months. The Official 40c, Peckham Rye, S.E.15. Receiver reported that the applicant failed in Daco Refrigeration, Ltd.— Registered October October, 1940, the liabilities amounting to 15th. Capital, £3,000. Directors: D. A. Cross, £3,599. In M a y , 1946, the trustee paid a A. G. Walker and F. Jones. Regd. office: dividend of 20s. in the £ to all the creditors 137, Lich field Street, W alsall. with the exception of the bankrupt’s wife, who Mossburns, Ltd.— Registered October 15th. had a substantial claim for money advanced. Capital, £10,000. Manufacturers, hirers, T h e bankrup t cam e to this country in 1932 and repairers, importers and exporters of, and attributed his failure to difficulties which arose dealers in, radio receivers and transmitters, through his internment during the war. November 8, 1946 E l e c t r i c a l R e v ie w 761 STOCKS AND SHARES valued at practically gilt-edged level. Regarded at the worst, as short-term investments repayable ■ T is increasingly apparent that the Treasury in Government stock within a few years, the decision to repay the 3 per cent Local Loans, shares are attracting the attention of investment and to issue at par a new 2 i per cent stock with that is dissatisfied with gilt-edged yields and is no compulsory redemption date, is influencing prepared to accept the nationalization un­ investments over a much wider field than that certainty. of the gilt-edged market. In reducing still more the yields on Government stocks, this further Railways and Traction advance of the cheap money policy automatically Following upon last week’s rise in British lowers the return which money is prepared to Electric Traction deferred, the stock has added accept from more speculative issues. At the another 20 points to the price, which now stands same time, the plethora of funds for investment at 1265. T h e 8 per cent preferred is 8 higher is augmented by the prospective release next at 190. Home rails have returned to popular January of some £429 million Local Loans favour. Southern 5 per cent preference at 124j money, some of which at any rate will seek is 5^ points to the good. The company antici­ better yields than are afforded by purely safety- pates spending about £15 million upon extension first stocks. The search for 3 per cent with good of its electrification system. Thomas Tilling security has aggravated the shortage and raised shares are better at 57. the prices of sound industrial debentures and Cable & Wireless preference has gained 2, at other prior charges. On electrical equipment 121$; the ordinary at 115| lost 1£ of its last ordinary shares, yields are down in a number week’s rise of 5. International “ Tel. & Tel.” of cases to the neighbourhood o f 3 to 3^ per dipped to 19, in a W all Street slump, but rallied cent. to 21. Radio shares are steady. Many Price Gains G.E.C. Outstanding in the week’s long list of improve­ An advance to 5-xV in the price of General ments in electricity supply shares are the gains Electric ordinary shares reflects in part the of 4s. in British Power & Light, now 37s. 6d., increased demand for industrials of the best and 3s. 6d. in Lancashire Electrics at 37s. investment character. It also owes something M etropolitans, at 48s. 6d., are also 3s. 6d. to to the direction of notice to the company’s the good. Rises of 2s. or more are shown in interests in the electricity supply field. These City o f Lo nd on s at 34s., N o rth Easterns at interests are not shown separately in the balance 36s. 6d., Scottish Power at 45s., and Electrical sheet item of close on £3 million, representing Distribution of Yorkshire at 51s. Advances of investments in subsidiaries. Evidently, however, Is. to 2s. 6d. are common. Electrical equipment they are of substance and there is a general shares have again advanced, but at a more staid impression that they are worth something more pace. Associated E lectrical Industries have done than the value at which they stand in the particularly well with a gain of half-a-crown to company’s books. Recent appreciation in the 68s. 6d. English Electrics are Is. better at price of electricity supply shares has awakened 61s. 6d., and Lancashire Dynamos are noticeably interest in the possibility of a useful capital strong at 5$. Reyrolles, at 74s., show no re­ profit to G.E.C. if these subsidiaries were to be sponse to the report of a working agreement bought out at anything like present market value. with Imperial Chemical Industries for the production of fire-proof cables. The latter Company Results company’s shares, on the other hand, are higher Crabtree Electrical Industries have distributed at 43s. 6d. British Rola at 7s. are Is. up and an 17% per cent (including 74 per cent bonus) for active market. Plessey and Burco are both each year since the registration of the company Is. 3d. better at 35s. and 30s. respectively. in 1936. Preliminary figures accompanying this year’s dividend announcement indicate a rise Electricity Supply Shares of £29,000 to £107,000 in the net profit, after Midland Counties Electric shareholders who tax, of the operating subsidiary. The announce­ decided to take up the new shares recently offered ment drew attention to the consistently sound to them at 35s. have been quickly rewarded. investment character of the 10s. shares, which Dealing in the new shares began on the 18th of have responded with a rise of about Is. to last m onth at a prem ium o f 9s., which has since 46s. 6d. Allowing for the dividend in the price, expanded to 13s. 6d. In the same-period, the the yield works out at £3 17s. 6d. per cent. old shares have risen from 47s. to 51s., ex rights Murex is another steady dividend payer. Trad­ to the new issue. Having put up a signally ing profits for 1945-6 fell sharply, but as a result successful resistance to the drift of prices during of savings in taxation, the net figure was little September, electricity supply shares as a whole changed. At the annual meeting the chairman, have remained in the van of the upward reaction. as m entioned in last week’s Electrical Review, In both phases the chief supporting consideration indicated that the difficulties which lowered last has been to regard the nationalization factor as year’s profits are still persistent, but he expressed well discounted in yields of 4 to 4* per cent confidence in the longer prospect. The price of from securities which in normal times, were thejihares at 4-\ is 3s. 9d. down. Novem ber 8, 1946 762 E l e c t r i c a l R e v i e w \i;n PATENT'S Electrical Specifications Recently Published

facsimile transmission systems.’ 3056/44. The numbers under which the specifications will be Fe b ru a ry 20th, 1943. (581485.) printed and abridged are given in parentheses. G. R. Fountain, Ltd., and A. E. C. StoelL— Copies of any specification (Is . each) may be “ L o u d speaking telephone systems. 11625. obtained from the Patent Office, 25, Southampton Ju ly 12 th, 1940. (581562.) Buildings, London, W.C.2. W. T. Henley’s Telegraph Works Co., Ltd., KT.-GES. Brown, Boveri & Cie.— H. W. Breeze and H. Hubbard.— “ Carriers for A “ Control system for pneumatically electric cartridge fuses.” 15163. August 9th, operated electric circuit-breakers.” 17320/44. 1944. (581509.) , , „ Septem ber 11th, 1943. (581544.) W . T. Henley’s Telegraph Works Co., Ltd., Allmanna Svenska Elektriska Aktiebolaget.— H. A. Tunstall and H. A. Macdonald. “ Means for obtaining a constant current from “ Floats more particularly for use with buoyant a slightly variab le alternating voltage.” 3974/44. electric cables.” 11392. September 6th, 1941. F e b ru a ry 1st, 1943. (581487.) Automatic Telephone & Electric Co., Ltd., ^ H o o v e r , L td .— “ Suction cleaners.” 17375/44. C. Gillings and C. E. Beale.— “ Telephone or Septem ber 24th, 1943. (581547.) lik e systems.” 10079. A p ril 21st, 1945. Igranic Electric Co., Ltd. (Cutler-Hammer, (Addition to 563504.) (581679.) Inc.).— “ Controllers for electric towing winch Birlec, Ltd., and R. J. Lean. Electric m otors.” 18523. N ovem b er 8th, 1943. (581641.) couplings for use with thermo-couples, thermal Igranic Electric Co., Ltd., and J. R. Taylor — fuses and the like.” Cognate applications “ Polyphase electric-motor protective equip­ 17557/44 and 1097/45. Septem ber 14th, 1944. m ent.” 17590. Septem ber 14th, 1944. (581609.) (581591.) E. G. Johnson.—“ Electric heating and A. D. Blumlein and E. L. C. White.— cooling systems for horticultural houses and “ Pulse generating thermionic valve apparatus.” cloches.” 11105. Ju n e 9th, 1944. (581498.) C ognate applications 10484/40 and 910/41. B. F. J. Johnson and Power’s & Dean, Ju n e 17th, 1940. (581561.) Ransome’s, Ltd.— “ Electric welding.” 18270. British Thomson-Houston Co., Ltd. Septem ber 25th, 1944. (581631.) “ Lum inescent m aterials.” 15066/44. August Linde Air Products Co.— “ Electrical control 12th, 1943. (581588.) “ Safety systems fo r arrangements for flame cutting devices. tap changing devices.” 9328/43. Ju n e 13th, 12443/44. J u l y 14th, 1943. (581585.) 1942. (581640.) “ Mercury dispensing appara­ Maschinenfabrik Oerlikon.— “ Contact device tus.” 18799/44. O ctober 2nd, 1943. (581656.) for circuit-breakers of the column insulator R. B. Canning.— “ Electric cable joint boxes.” type.” 2701/45. F e b ru a ry 4th, 1944. (581550.) 4342. F e b ru a ry 21st, 1945. (581552.) “ Compressed air blast electric switch systems.” Compañía para la Fabricación de Contadores 19514/44. N ovem b er 2nd, 1943. (581669.) y Material Industrial Soc. Anon, and P. Viteau. Okonite-Callender Cable Co., Inc.— “ Ter­ “ Electrical measuring apparatus.” 17694. m inating o f electric cables.” 3485/45. M arch Septem ber 15th, 1944. (581611.) 29th, 1944. (581551.) E. C. Cork and M. Bowman-Manifold.— Pirelli-General Cable Works, Ltd., and H. “ Radiation projection systems.” 2509. Barron.— “ Manufacture of electrically insulated F e b ru a ry 15th, 1943. (581570.) w ires.” 9238. M a y 15th, 1944. (581492.) J. A. Crabtree & Co., Ltd., and R. T. Waite.— Plessey Co., Ltd.—“ Electric contact “ Socket tubes o f electric couplings.” 17562. elements.” 4243/45. February 23rd, 1944. Septem ber 14th, 1944. (581608.) (581597.) A. G. Crossland.—•“ Electric light fittings. Soc. Anon, pour l’Industrie de 1’Aluminium. 19115. O ctober 5th, 1944. (581664.) “ process for the manufacture of furnaces R. J. Dippy.— “ Wireless signalling systems.” for the electrolytic production of aluminium.” 18287. Decem ber 23rd, 1942. (581602.) 18064/44. A ugust 23rd, 1943. (581625.) “ W ireless systems fo r navigation.” 18288. T. B. Somerville and Metropolitan-Vickers D ecem ber 23rd, 1942. (581603.) “ Cathode ray Electrical Co., Ltd.— “ Mechanical constraining oscillograph devices.” 6602/45. Decem ber 23rd, means and devices for relatively movable 1942. (D ivid e d out o f 581603.) (581638.) members.” 3458. M a rc h 2nd, 1943. (581482.) English Electric Co., of Canada, Ltd.— Standard Telephones & Cables, Ltd.— “ Transform ers.” 14863/44. Ju n e 1st; 1944. “ Electric high-frequency coupling circuits.” (581506.) ... 19244/44. Ja n u a ry 31st, 1944. (581667.) C Eveson.— “ Cooking utensils particularly Standard Telephones & Cables, Ltd., and f o r use on electric stoves.” 18974. O ctober 4th, C W . Earp.— “ Oscillation generators.” 17730. 1944. (581661.) „ Septem ber 15th, 1944. (581613.) Finch Telecommunications, Inc.— syn­ Standard Telephones & Cables, Ltd., and chronizing and phasing arrangements for electric November 8 1946 , E l e c t r i c a l R e v ie w 763 mmino ‘!?<;obsen-—“ Arrangements for deter- Svenska Turbinfabriks Aktiebolaget Ljung- waves ” MTns6 xt“ *1 bearin8 by electromagnetic strom .— “ Elastic fluid turbines.” 17969/44. c? a j N ovem b er 14th, 1941. (581568.) N ovem b er 15th, 1943. (A d d itio n to 534844.) »wndnrd Telephones & Cables, Ltd., and (581623.) . . om’ln-—“ Thermionic devices for use Walsall Conduits, Ltd., and E. Gough.— . , ‘electric wave guides.” 11078. August “ Electric tum bler switches.” 9429. A p ril 16th, 29th, 1941. (581481.) 1945. (581556.) Standard Telephones & Cables, Ltd., G. C. C. F. Whitehead and F. N. R. Baker.— Hartley and W. J. Reynolds.— “ Electrically “ Electromagnetically operated valves.” Cognate operated calculating equipm ent.” 5716. M a y applications 11012/44 and 363/45. Ju n e 8th, 2nd, 1941. (581565.) 1944. (581645.) CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work Contracts Open Manchester.—November 15th. Electricity Committee. One motor-driven air compressor Where “ Contracts Open " are advertised in our and receiver. (October 25th.) “ Official Notices ” section the date of the issue is given in parentheses. North Scotland. — Hydro-Electric Board. Abertillery. — November 21st. Sheet-steel Supply, delivery and erection of a 132-kV kiosks and equipment, e.h.v. and l.v. under­ transmission line. (See this issue.) ground cables and l.v. service cables in connec­ •November 25th. H.v. and l.v. lines, Gairloch tion with the Council’s housing site at Penrhiw, distribution scheme. (October 25th.) Bryn Ithel, Llanhilleth. (See this issue.) Plympton St. Mary.— December 6th. R.D.C. Birmingham. — November 25th. Electric Electricity Departm ent. 6,600/415/240-V, three- phase transformers. (See this issue.) Supply Department. Domestic electrical apparatus. (See this issue.) Stoke-on-Trent. — November 25th. North Colwyn Bay.— November 15 th. Borough West Midlands J.E.A. Outdoor type static Council. Two electric centrifugal sewage pumps transformers. (See this issue.) for Rhos-on-Sea pumping station. Borough Wallasey.— November 23rd. Corporation. engineer, T o w n H a ll. One 500-A three-phase meter testing set. Edinburgh. — November 22nd. Electricity (See this issue.) Committee. Meters for twelve months. (Nov­ Woolwich.—November 27th. Electricity ember 1st.) Department. Electricity meters, transformers, November 28th. Cables for switchgear ex­ h.v. and m.v. cable for twelve months. (Novem­ tensions. (See this issue.) ber 1st.) Epsom and Ewell.— December 16th. Elec­ tricity Department. One 500-kVA three-phase Orders Placed transformer and one ten-panel 11,000-V 150- Birkenhead. —■ Electricity Committee. Ac­ MVA truck type switchboard. (See this issue.) cepted. Six boiler units and ancillary plant Glasgow.— November 26th. Public Health (£2,545,780).— Babcock & Wilcox. Department. Five electric vehicles. (See this Chester-le-Street.— R.D.C. Accepted. Elec­ issue.) trical installations in 80 houses in Plawsworth Great Yarmouth.— November 29th. Electri­ Road and 80 houses on the Barley Mow site.— city Department. Domestic appliances for B. L. Oliver. twelve months. (N ovem b er 1st.) Glasgow.—Transport Committee. Accepted. Harwich.— December 6th. Borough Council. Cables (annual contract).— Scottish Cables. Six sets of electrically driven sewage pumps.— Copper bonds.— British Insulated Callender’s John Taylor & Sons, Artillery House, West­ Cables. Materials for new cars : Gear cases.— minster, S .W .l. G.E.C. Switches.— Maley & Taunton. Trolley Keith (Banffshire).— N ovem ber 16th. Tow n feeder cable.— Scottish Cables. Asbestos wire. Council. Electrical work at houses (14) at — London Electric Wire Co. & Smiths. South Cuthil. Burgh surveyor, Balloch Road. Electricity Committee. Accepted. Four Littleborough.— November 25th. Electricity boiler units (revised tender £2,614,000).— Department. One 350-kVA transformer, e.h.v. Babcock & Wilcox. 50,000-kW turbo-alternator and l.v. underground cables and switchgear. (£311,880).— C. A. Parsons & Co. Completion of buildings for Braehead power station (See this issue.) London— M etropolitan Water Board. 25- (£190,000) and construction of piles (£111,000). H P 200/220-V, 1,450 r.p.m . vertical-spindle —J. Mowlem & Co., Ltd. for suitable for adaptation as vertical spindle) Prescot.— U.D.C. Accepted. Electrical work m o to r a n d starter. (See this issue.) at 38 houses.— Portus & Rhodes (£1,330). 764 E l e c t r i c a l R e v ie w Novem ber 8, 1946

Havant and Waterloo.— Permanent houses Contracts in Prospect (34), Victoria Road, Emsworth; surveyor, Particulars of new works and building schemes for Council Offices, Park Road North. the use of electrical installation contractors and Hexham.— Houses (24), Wylam, for R.D.C.; traders. Publication in this section is no guarantee R. C. Williamson, builder, Rowlands Gill, Co. that electrical work is definitely included. Alleged D urham . inaccuracies should be reported to the Editors. Ilkeston.— Additional classrooms at the Gram­ Aberdeen.— School (£200,000) for Corpora­ mar School; F. H. Crossley, county architect, tion Education Department; city architect. County Offices, Derby. Aldershot.— Houses (64), Kingsway site Kingston-on-Thames.— B lo c k o f 168 flats, (£79,887); C. K. Davis, builders, Shepperton site of Cambridge Homes; borough engineer. Estate Office. Lanarkshire.— Extensions at Crawford Hotel, Barnard Castle.— Houses (102) in Station Crawford (£10,000); D. McDougall, general Road for the North-Eastern Housing Associa­ manager, Public House Trust, Glasgow. tion; J. R. Wetherell, architect, Picton Place, Newcastle-on-Tyne.— Covered-in bus station N ewcastle-on-T yne. in the Haymarket; city engineer, Town Hall. Barnet.— Houses (188), Chesterfield Estate Extension of existing cooking arrangements for U.D.C.; Henderson Building Co., Ltd., for school meals and dining accommodation; 94, Priory Park Road, N .W . 6. Education Committee Architect, Education Beddington and Wallington.— Houses (140); Offices, Northumberland Road. Prestige & Co., Ltd., builders, 149, Grosvenor Portsmouth.—New factory for Leethems, Road, S.W .l. Ltd., Station Road, Farlington. Beverley.— Houses (56), Cherry Tree Lane; St. Albans.— Houses (42), Hatfield Road and R. Preston, town clerk, Municipal Offices, Sleapshyde Lane (£58,667), for R .D .C .; Davies Lairgate. & Rentowl, builders, Victoria Street. Bristol.— Group of three primary schools, St. Pancras.— Extensions, Middlesex Hospital, Southmead; J. N. Meredith, city architect, C h arlotte Street; V ic to r C u llen & Sorts, Eagle House, Colston Avenue. surveyors. Flats (85), Peckwater Street (£167,268); J. M. Cardiff.— Houses (150); city architect. Contractors, Ltd. Chipping Norton.— Houses (40), for R.D .C .; Salford.— Redevelopment West Fleet Street H. Cooper & Sons, 51, Cornmarket Street, area (£ 100,000); city engineer. O xford. Skipton.— Houses (32), Keighley Road, for Consett.— Houses (20), at Hamsterley Colliery; U.D.C.; K. B. Robinson, surveyor, Town Hall. J. J. Eltringham, U.D.C. architect, Derwent South Shields.—Houses (150) for T.C.; Street, Blackhill. Cussins (Contractors), Ltd., Jesmond, New- Cuckfield.—Permanent houses (76), Barn castle-on-Tyne. Cottage Estate, Haywards Heath; R. J. Canteen on the premises of Jackson’s Willett, surveyor, Council Offices, “ Oaklands,” (Clothiers), Ltd., King Street; E. M. Lawson, Haywards Heath. Barras Buildings, Barras Bridge, Newcastle. Dumfries.— Houses (54), to cost £70,000; Cinema, Ocean Road for W. B. Bolam; burgh surveyor. J. H. Morton & Son, architects, Martins Bank Enfield.— Accumulator room and boiler house Chambers, Fowler Street. for Cosmocord, Ltd., 700 Great Cambridge Houses ( 66); Carruthers & Sons, 1, Heugh Road; C. H. Chaston & Co. Terrace. Fence Houses (Co. Durham).— Factory for Thornaby.— Extensions to factory, Thornaby N. Hyer, Ltd.; Cordingley & McIntyre, Road for J. A. C. Hoyle. architects, The College, Durham. Wallsend.— Additions to the Monitor Works, Fifeshire.— Rehabilitation centre for miners Kings Road; T. Clements & Son, builders, (£120,00"0); secretary, Miners’ Welfare, Dun­ Selborne Gardens, Newcastle-on-Tyne. ferm line. Wembley.— Houses (64), Sudbury Farm Fort William.— Houses (122); burgh sur­ estate; borough engineer. veyor. West Hartlepool.— New offices, Stranton Glasgow.—Two temporary schools; city Sawmills, for Christopher Brown, Ltd.; Turn­ architect. bull & Rowe, architects, Scarborough Street. Gosforth.— B.I.S.F. houses (100) for U.D .C.; Weymouth and Melcombe Regis.— Houses M . Harrison & Co. (Leeds), Ltd., builders,Leeds. (36), Shortlands Road, Upwey; borough Three-storey block of flats for U.D .C.; M. J. engineer, 6, Pulteney Buildings. Liddell & Sons, builders, Hunters Road, Whitley Bay.— Houses (96) on Roker Avenue; G osforth. E. Roberts, U.D.C. surveyor. Gower.— Houses (40), C'abati Isaac, and Killay, Wokingham.— Houses (42), King Street Lane, for R.D.C.; surveyor, 8, Uplands Crescent, Winnersh, for R.D.C.; Eric G. V. Hives, Swansea. architect, 3, Cork Street, Reading.

November 8, 1946 E l e c t r i c a l R e v ie w

'T i O overcome these insidi- ous enemies of High Ten­ sion System operation calls for long and intimate experi­ ence of the problems involv­ ed. It entails intensive tests and trials carried out in lab­ oratories equipped with the most modern plant and facilities. This insulator incorporates the very latest developments in design for combating foul air and fog — and like all Bullers products, stands up to its job. Whatever your insulating problems, bring them to Bullers.

BULLERS LTD., 6. Laurence Pountney Hill. London, E.C.4. Phone: Mansion House 9971 a lines) Telegram*! " Bullers, Cannon, London •• 6 2 E lectrical R e v ie w November 8, 1946

very successful application of G.E.C. Infra-Red Lamp Heating Is here illustrated. This plant, installed in the works of Messrs. Carbodies Ltd., Coventry, is stoving the surface primer coat on Hillman-Minx Coupe bodies. Stoving time, 20 minutes. Loading 79 kW .

For all Infra-Red Lamp Heating consult the C.E.C.

Advt. of The General Electric Co. Ltd.. Magnet House, Kingsway, London, W .C .2 Novem ber 8, 1946 E l e c t r i c a l R e v ie w 63 c l a s s i f i e d ADVEKT!si:ni:\rs A D V E R T I S E M E N T S for insertion-! n the following R E P L I E S T O advertisements published under a s lssue are accepted up to F ir s t P o st on Box Number if not to be delivered to any particular S E ° * at House, Stamford Street, London, firm or individual should be accompanied by instruc­ tions to this effect, addressed to the Manager of the TIBS CHARGE f o r advertisements in this section E L E C T R IC A L R E V IE W . Letters of applicants in ULzlTJR^F, ne (aPProx. 7 words) per insertion; ONLY such cases cannot be returned to them. The name ? AND GOVERNMENT announce­ m ents CAN NOW BE DISPLAYED:— 30/- per of an advertiser using a Box Number will not be inch. Where the advertisement includes a Box disclosed. All replies to Box Numbers should be Number this counts as six words and there is an addressed to the Box Number in the advertisement, additional charge of 6d. for postage of replies. c/o E L E C T R IC A L R E V IE W , Dorset House, Stam­ S IT U A T IO N S W A N T E D . — Three insertions ford Street, London, S .E .l. Cheques and Postal under this heading can be obtained for the price of Orders should be made payable to E L E C T R IC A L two if ordered and prepaid with the first insertion. R E V I E W LT D . and crossed. Original testimonials should not be sent with applications for employment.

OFFICIAL NOTICES, TENDERS, ETC. BOROUGH OF EPSOM AND EWELL ELECTRICITY DEPARTMENT COUNTY BOROUGH OF GREAT YARMOUTH ELECTRICITY DEPARTMENT ^ P E N D E R S ar£ invited for the supply, delivery and erection of the following: (a) 1 500-kVA. 3-phase Domestic Appliances Transformer: (b) 1 10-panel, 11,000-v.. 150-MVA Truck Type Switchboard. r p E N D E R S are invited for the supply and delivery of Specifications and tender forms may be obtained from -1- Domestic Appliances required during the period of W . B1. Hayden, M .I.E .E .. Borough Electrical Engineer, 1*2 months ending 31st March. 1948. Specification, con­ Electricity Showrooms, Church Street, Epsom, upon pay­ ditions and form of tender for all or any items as listed may ment of one guinea, which will be refunded on receipt be obtained from G. T. Allcock, Esq., Chief Engineer and of a bona fide tender. Additional copies may be purchased Manager, Electric House, Great Yarmouth :— at a cost of 5s. each. Large, small and breakfast cookers, boiling rings, Tenders, on the prescribed forms, in sealed envelopes toasters, electric kettles, percolators, waterheaters. endorsed “ Tender for Transformer ” or " Tender for wash boilers, refrigerators, washing machines, irons, Switchgear ” as the case may be. must reach the under­ vacuum cleaners, fires, clocks, towel rails. signed not later than 10 a.m. on Monday, 16th December. Tenders, enclosed in plain sealed envelope, properly 1946. No name or mark indicating the sender must be endorsed “ Tender for Domestic Appliances.” must reach placed on the outside of the envelope. Any tender not me not later than 12 noon on Friday. 29th November. complying with these requirements will not be considered. 1946. The Council do not bind themselves to accept the The Council do not bind themselves to accept the lowest lowest or any tender. or any tender. FARRA CONWAY. EDWARD MOORE. Town Hall. Great Yarmouth. Town Clerk. Town Hall, Town Clerk. 19th October. 1946.______3242 The Parade. Epsom, Surrey. METROPOLITAN BOROUGH OF WOOLWICH 31st October. 1946. _ 3357 ELECTRICITY DEPARTMENT LITTLEBOROUGH U.D.C. ELECTRICITY DEPT.

Annual Contracts for the Supply of H.V. and M.V. r p H E above Council invite tenders for the supply and Cables delivery of the following: One 350-kVA Transformer: E .H .T . and L.T . Underground Cables: E.H .T . and L.T. T 1 E N D E R S are invited by the above Council for the Switchgear. supply of H .V . and M .V. Cables required during Specifications and forms of tender may be obtained on the year 1st January, 1947, to the 31st December, 1947. application to Mr. George Hill. Electrical Engineer and Specification and form of tender may be obtained from Manager, Council Offices, Littleborough. No tender will the Borough Electrical Engineer, Electric House, Powis be received except in a plain sealed envelope endorsed Street. Woolwich. S.E.18. upon receipt of a deposit of “ Tender ” followed by the subject to which it relates, £1 Is., which will be refunded within one month of the which must not bear any name or mark indicating the receipt of a bona fide tender. sender. Tenders, enclosed in a plain sealed envelope and Tenders, on the prescribed form, sealed and endorsed endorsed “ Tender for Cables,” must be delivered to the as above, must be delivered to the undersigned not later Borough Electrical Engineer, Electric House. Powis than 9 a.m. on Monday, 25th November. 1946. The Street. Woolwich. S.E.18. not later than 12 noon on Council do not bind themselves to accept the lowest or Wednesday. 27th November, 1946. The Council do not any tender. bind themselves to accept the lowest or any tender. R . C. CLOUGH. DAVID JENKINS. Council Offices, Clerk of the Council. Town Hall. Woolwich. S.E.18. Town Clerk. Littleborough. Lancs. 18th October. 1946.______3199 6th November. 1946.______3342 METROPOLITAN BOROUGH OF WOOLWICH METROPOLITAN BOROUGH OF WOOLWICH ELECTRICITY DEPARTMENT ELECTRICITY DEPARTMENT

Annual Contracts for the Supply of Transformers Annual Contracts for the Supply of Electricity Meters

^ PE N D ER S are invited by the above Council for the r p E N D E R S are invited by the above Council for the supply of Transformers required during the year supply of Electricity Meters required during the : 1st January. 1947. to the 31st December. 1947 year 1st January. 1947. to the 31st December. 1947. Specification and form of tender may be obtained from Specification and form of tender may be obtained i the Borough Electrical Engineer. Electric House. Powis from the Borough Electrical Engineer, Electric House. f Strept Woolwich S.E.18. upon receipt of a deposit of Powis Street, Woolwich. S.E.18. upon receipt of a deposit % £1 Is.’, which will be refunded within one month of the of £1 Is., which will be refunded within one month of the receipt of a bona fide tender. re°Tendersa ^ndo^ed ^ n ^ a plain sealed envelope and Tenders, enclosed in a plain sealed envelope and enrinrcpri T e n d e r for Transformers.” must be delivered endorsed “ Tender for Meters.” must be delivered to the S th^ R nrou -h Electrical Engineer. Electric House. Borough Electrical Engineer. Electric House. Powis Pnwic ^fSpt Woolwich. S.E.18. not later than 12 noon Street. Woolwich. S.E.18, not later than 12 noon on 5? w ? c L ? 7th November. 1946. The Council do Wednesday, 27th November. 1946. The Council do not Sot b ^ nthem^lves to accept the lowest or any tender, bind themselves to accept the lowest or any tender. not bind them_eiv D A V ID JE N K IN S . DAVID JENKINS. * Town HaU. tt n wnnlwich.Wooiwu-u. S.E.18. Town Clerk. 3igg Town Hall. Woolwich. S.E.18. Town Clerk. 18th October. 1946. 18th October. 1946. 3200 64 E l e c t r i c a l R e v i e w Novem ber 8, 1946

CITY OF BIRMINGHAM ELECTRIC SUPPLY DEPT. NORTH-WEST MIDLANDS JOINT ELECTRICITY AUTHORITY Domestic Electrical Apparatus E N D E R S are invited for the following contracts: — r p H E Electric Supply Committee invites tenders for the T Contract A .296—Outdoor Type Static Transformers. following Domestic Electrical Apparatus, to be Contract A .297— Painting of Chimney Stacks. delivered as required for a period of twelve months from Copies of specifications and forms of tender may be date of contract: — obtained from the undersigned on payment of £2 (Two Specification No. Item. Pounds) in currency notes. A P P . 31 ... Kettles. Tenders must be delivered to the Clerk and Accountant .. 32 ... Aluminium Saucepans. by the first post on Monday, 25th November, 1946. The 33 ... Cookers. Authority do not bind themselves to accept the lowest 34 ... Wash-boilers. or any tender. 35 ... Water Circulators. F . F A V E L L , .. 36 ... Storage Water Heaters (1 J gallons). York Chambers, Chief Engineer and Manager. ,, 37 ... Cooker Control Units. Kingsway. Stoke-on-Trent. 38 ... Circulator Control Panels. 30th October, 1946.______3335 The General Conditions of Contract (which include the Corporation’s Fair Wages and Conditions of Labour THE CORPORATION OF GLASGOW PUBLIC Clause), specifications and forms of tender may be obtained HEALTH DEPARTMENT on application to the undersigned, stating which speci­ fications are required. Electric Vehicles Sealed tenders, enclosed in the official envelope pro­ vided and endorsed for the purpose, must be delivered r p H E Corporation invite tenders for Five Electric to the undersigned not later than 10 a.m. on Monday, 25th November, 1946, when they will be-opened. Tenders -L Vehicles. Specifications and forms of tender may be not complying with the foregoing will be rejected. obtained on application to the General Manager, Corpora­ tion Electricity Dept., 75, Waterloo Street, Glasgow, C.2. F. W. LAWTON. Sealed tenders, marked outside “ Public Health Dept., 14, Dale End, Chief Engineer and Manager. Tender for Electric Vehicles,” must be lodged with the Birmingham, 4.______3394 Subscriber not later than 10 a.m. on Tuesday, 26th November. 1946. The lowest or any tender may not be ABERTILLERY URBAN DISTRICT COUNCIL accepted. WILLIAM KERR. Tenders for Electrical Works City Chambers, Glasgow, C.2. Town Clerk. 1st November, 1946. 3414 r p E N D E R S are invited for the supply, delivery, con- struction and erection of Sheet Steel Kiosks and METROPOLITAN WATER BOARD Equipment, E .H .T . and L.T . Underground Cables and L.T . Service Cables in connection with the Council’s Tenders for Electric Motor and Starter Housing Site at Penrhiw, Bryn Ithel, Llanhilleth. Specification, schedule of quantities and conditions of contract can be obtained upon application to the Elec­ H E Metropolitan Water Board require an Electric trical Engineer and Manager, 40, Somerset Street. Aber- T Motor and Starter, 25 h.p., 200/220 volts, 1,450 tillery, on payment of a deposit of £2 2s., which deposit r.p.m., vertical spindle or suitable for adaptation to will be refunded upon receipt of a bona fide tender. vertical spindle drive. New or secondhand. Particulars Tenders, in plain sealed envelopes endorsed “ Tender of plant available should be enclosed in sealed envelope for Electrical Equipment.” are to be delivered to the endorsed “ Tender for Electric Motor and Starter,” and undersigned not later than noon of Thursday, the 21st addressed to the undersigned at the offices of the Board November, 1946. The Council do not bind themselves (Room 122). to accept the lowest or any tender and reserve the right C. W . S T O K E R . to accept the whole or part of any tender. Offices of the Board, Clerk of the Board. New River Head. H. J. WILLIAMS. Rosebery Avenue, London, E.C.l.______3384 Council Offices. Clerk of the Council. Abertillery, Mon. COUNTY BOROUGH OF WALLASEY 2nd November, 1946.______3401 CITY OF EDINBURGH E N D E R S are invited for the supply and installation T of a 500-ampere. 3-phase Meter Testing Set. The H E Lord Provost, Magistrates and Council of the City Corporation do not bind themselves to accept the lowest T of Edinburgh invite tenders for the following works or any tender. at Portobello Power Station: 33-kV, 6.6-kV, 600-v. and Tenders must be endorsed ” Tenders for Meter Testing 250-v. Paper-insulated Cables for the switchgear exten­ Set ” and forwarded to reach the undersigned at the Town sions to Specification No. E .D . G.C. 193. Hall, Wallasey, by noon on Saturday, the 23rd Novem­ The specification, form of tender. General conditions ber. 1946. Specification and form of tender can be obtained and drawings are now obtainable from the Corporation’s from the Borough Electrical Engineer. Wallasey Road, Consulting Engineers, Messrs. Kennedy & Donkin, 12, Wallasey Caxton Street. Westminster, London. S .W .l, on payment E M R Y S E V A N S . Town Clerk. of a deposit of £1 Is. for each copy, which will be re­ ______3375 funded on receipt of a bona fide tender, and on the return RURAL DISTRICT COUNCIL OF PLYMPT0N of the specification, general conditions and drawings. ST. MARY ELECTRICITY UNDERTAKING Tenders in duplicate, on the prescribed form, endorsed on the outside with the title of the specification, must be delivered at the office of the undersigned not later than r p H E above Council invite tenders for the supply of 12 noon on Friday, 22nd November, 1946. The Cor­ 6.600/415/240-volt, 3-phase Transformers. Specifi­ poration do not bind themselves to accept the lowest or cations and forms of tender can be obtained from the any offer. undersigned. J. STORRAR. S.S.C., Tenders to be delivered not later than 12 noon on the City Chambers, Edinburgh,1. Town Clerk. 6th December, 1946. The Council do not bind themselves November, 1946.______3420 to accept the lowest or any tender. PERCY T. LOOSEMORE, NORTH OF SCOTLAND HYDRO-ELECTRIC BOARD Council Offices. Plympton. Clerk to the Council. 1st November. 1946. 3428 E N D E R S are invited for the supply, delivery and T erection of a 132,000-volt Transmission Line. Copies SITUATIONS VACANT of the tender documents may be obtained from the Engineers. Messrs. Kennedy & Donkin. 32. Alva Street. A Midlands house of repute will shortly require the Edinburgh, 2, on sending to them a cheque for £1 Is., ■*-*- services of two Salesmen, whose qualifications should returnable on receipt of a bona fide tender. The Board incorporate a sound knowledge of the electrical and radio do not bind themselves to accept the lowest or any tender. trades, coupled with first-class selling ability and retail T. L A W R IE . trade connections. Remuneration will be by salary, 16, Rothesay Terrace. Secretary. commission and expenses. Applicants should state, in Edinburgh, 3. qq. confidence, full details of their previous exnpripnpp__ 29th October, 194G. 3340 Box 3075. c /o The Electrical Review. *penence. November 8, 1946 E l e c t r ic a l R ev ie w 65

METROPOLITAN BOROUGH OF FULHAM RURAL DISTRICT COUNCIL OF PLYMPTON , E L E C T R I C IT Y d e p a r t m e n t S T . M A R Y ^Dcsitinno0'- in,v,'t°s applications lor the following 1 H E above-named Council invite applications for the Station : in Fulham Base Load Generating T following appointments :— (a) District Engineer, at a salary of £330 per annum, a Candidates must have hac* rising by three annual increments to £375 per knowledge pJS? * also have gocd Seneral engineering Spntifli o n i i-nce in clerical systems of progressing annum, plus bonus (at present £59 16s.). Srip iop applicants must have had considerable (b) District Engineer, at a salary of £330 per annum, o?S' v isiting contractors’ works, assessing pro­ rising by three annual increments to £375 per gress and interviewing at management level. Applicants annum, plus bonus as above. muSL J t k ave ia Peasant personality which commands (c) Ju n io r Draughtsman, at a salary of £270 per respect. T h e salary w ill be in accordance w ith Class L , annum, rising by two annual increments to £300 i o n National Joint Board Schedule, at present per annum, plus bonus as above. £585 18s. Od. per annum. It is anticipated that the Applicants for post (a) should have practical experience Station will be re-classifled in 1947 to Class M when the in construction, operation and maintenance of transmis­ commencing salary would be £626 17s. Od. sion and distribution systems up to 33 kV in rural areas. TWO JUNIOR TECHNICAL ENGINEERS. — Applicants for post (b) should have practical experience Applicants must be not more than 25 years of age and in the layout of high and low pressure systems in must have obtained Inter. B.Sc. or give an undertaking respect of supplies to temporary and permanent housing that studies will be continued to this end. Candidates estates and large industrial consumers. A knowledge of must have also served a total of at least nine months as the Electricity Commissioners’ Regulations and procedure apprentice in an engineering works. Salary according to is essential. ability and experience in one of the following grades of Applicants for post (a) and (b) should have passed the N .J.B . Schedule. Class L , Grade 10 £426 6s. Od.: 10a qualifying examination of the Institution of Electrical £400 Is. Od.: 10b £374 17s. Od. or 10c £352 16s. Od. per Engineers, or equivalent. annum. I t is anticipated th a t the Station will be Applicants for post (c) should have had experience in re-classifled in 1947 to Class M when the commencing a modern drawing office, and preference will be given to salary would be Grade 10 £454 13s. 0d.. 10a £428 8s. 0d.. candidates having knowledge of design and layout of 10b £400 Is. 0d.. 10c £375 18s. Od. substation buildings. ASSISTANT CONTROL ROOM ENGINEER. — The appointments will be subject to the provisions of Applicants who must not be more than 30 years of age the Local Government Superannuation Act. 1937. and to must have obtained the Inter. B.Sc., and must have had determination by one month’s notice on either side. The a sound technical training. Practical experience and successful applicants will be required to pass medical knowledge of working on H.T. supplies, load dispatch and examinations. control of unit, including isolating and earthing equip­ Applications, in writing, giving age, state, qualifica­ ment. Salary in accordance with N .J.B. Class L in one tions and experience, accompanied by copies of two recent of the following grades according to ability and ex­ testimonials, must be forwarded so as to reach the under­ perience: Grade 10 £426 6s. 0d.. 10a £400 Is. Od. or signed not later than the 23rd November. 1946. 10b £374 17s. Od. per annum. It is anticipated that the Canvassing, either directly or indirectly, will be a dis­ Station will be re-classifled in 1947 to Class M when com­ qualification. mencing salary would be Grade 10 £454 13s. 0d.. 10 a PERCY T. LOOSEMORE. £428 8s. Od. or 10b £400 Is. Od. per annum. Council Offices. Clerk to the Council. BOILER HOUSE INSPECTOR (MECHANICAL).— Plym pton. Applicants must be not more than 40 years of age and 25th October, 1946. 3234 must have educational qualifications equal to Inter. B.Sc. CITY AND COUNTY OF KI N GSTON-U PON-H U LL They must also have served at least a 3 years recognised ELECTRICITY DEPARTMENT apprenticeship and have full practical knowledge of fitting and alignment to close limits. Candidates must also have have at least 5 years in a position of responsibility as a Assistant Mechanical Maintenance Engineer (Turbine Mechanical Engineer, preferably on maintenance of heavy House) plant. Salary will be in accordance with N .J.B. Class L Grade 9a. a t present £468 6s. Od. per annum. I t is A PPLICATIONS are invited for the above position anticipated th at the Station w ill be re-classifled in 1947 from persons available from civilian positions, or to Class M when commencing salary would be £501 18s. Od. from those serving in H.M. Forces. ELECTRICAL INSPECTOR.—Applicants must be not The candidate appointed will be required to take charge more than 40 years of age and must have obtained Inter. of the mechanical maintenance of all plants in the turbine B.Sc. or equivalent and have served at least 3 years house. Preference will be given to applicants who have recognised apprenticeship. Candidates must have held served an apprenticeship with a firm of turbine manufac­ a responsible position for at least five years in main­ turers. and have had subsequent experience in the overhaul tenance or m anufacturing control of electrical apparatus of large turbines. A graduateship of the Institute of as found in a Base Load Power Station and must have Mechanical Engineers or the holding of a 1st Class Board also had considerable personal experience in handling of Trade Certificate (Steam) would be an advantage. H.T. and E.H.T. apparatus. Salary will be in accordance The salary will be in accordance with the N.J.B. with Class L. Grade 9a. of National Joint Board Schedule, Scale, Class J. Grade 8. rising to Grade 7 (Grade 8. £521; at present £468 6s. Od. per annum. I t is anticipated Grade 7, £563/£589) after one year’s satisfactory service. that the Station w ill be re-classified in 1947 to Class M, The appointment is subject to a medical examination. when commencing salary would be £501 18s. Od. On appointment, the applicant must reside within the Forms of application may be obtained on sending city boundary (waived during present conditions) and. stamped addressed foolscap envelope to the undersigned after three months’ satisfactory probation, will be required to whom completed applications must be returned not to contribute to the Local Government and Other Officers’ later than 12 noon on December 11th, 1946. Superannuation Scheme. CYRIL F. THATCHER. Applications should give names of references who may Town H all. Tow n Clerk. be consulted and should be submitted to the General Fulham, S.W . 6. 3418 Manager. Electricity Offices. Ferensway, Kingston-upon- H u ll, fry 18th November. 1946.______3229 METROPOLITAN BOROUGH OF BETHNAL GREEN ELECTRICITY DEPARTMENT BARNSLEY MINING AND TECHNICAL COLLEGE Principal: H. L. Haslegrave, Wh.Sc.. M.A., Ph.D.. fpH E Council invites applications for the position of M.Sc., M.I.Mech.E., M .I.E.E. Junior Mains Engineer and Draughtsman. Salary in accordance w ith the N .J- B . Scale, Class F (Grade 10), at A present £321 6s. per annum (inclusive of cost-of-living PPLICATIO NS are invited for the position of Head of the Electrical Engineering Department. Can­ The appointment will be subject to the Council’s Super­ didates should hold an Engineering Degree and have had annuation Acts and By- Law s and Standing Orders, and industrial and teaching experience. The salary will be the successful candidate must pass a medical examination. in accordance with Grade I (Head of Department) of the Applications stating age experience, and accompanied Burnham Scale for Technical Colleges, i.e.. £600-£25-£750. by conies of two recent testimonials and endorsed “ Ju n io r Further particulars and forms of application may be Maim FnSineer" must reach me at the Town Hall, obtained from the Principal, Technical College, Church Bethnal G?een London. E.2 by 10 a.m. on Friday, 15th Street, Barnsley, to whom applications must be sent by _ loVfi Canvassing will disqualify. Wednesday, 20th November. November. 1946. g. P. FERDINANDO. H. V. LIGHTFOOT. Town Clerk. Director of Education. 3383 3339 6 6 E l e c t r ic a l R e v ie w Novem ber 8, 1940

BOROUGH OF EPSOM AND EW ELL CITY OF BRADFORD ELECTRICITY DEPT. ELECTRICITY DEPARTMENT A PPLICATIO N S are invitedjfor the following appoint- Demonstrator mentsts on thetne sistaff of the Department ■ "(a) O N E E L E C T R I C A L D R A U G H T S M A N . (b) ONE MECHANICAL DRAUGHTSMAN. A PPLICATIONS are invited from suitably qualified (c) ONE CLERK OF W ORKS (Substations). female candidates for the above appointment. Appli­ Candidates must have a sound knowledge of Drawing cants must be not less than 25 or more than 35 years Office practice and have had experience in the preparation of age, be capable of conducting demonstrations and of drawings and specifications for power station and sub­ advising consumers on the use of all kinds of electrical station plants. Corporate Membership of the appropriate apparatus, and be willing to undertake general showroom Professional Institution or exempting qualifications will be duties when req uired ; a good general education is essen­ an advantage. . , . tial. Applicants Should hold the E.A.W. Diploma or Applicants for the post of Electrical Draughtsman should equivalent. have sound knowledge of high voltage and low voltage Salary according to age in the General Division of the switchgear installation, and experience of cable work and National Scale of Salaries, maximum £240 per annum at electrical eauipment generally. , ^ ... 30 years of age, plus £24 weighting for London area, Applicants for the position of Mechanical Draughtsman plus cost-of-living bonus, at present £48 2s. per annum. should have experience in the lay-out of boiler plant, The appointment will be subject to the provisions of the turbine plant and pipework , . Local Government Superannuation Act, 1937, and the Applicants for the post of Clerk of Works should have successful candidate will be required to pass a medical experience in the superyision of erection of buildings and examination. the installation of electrical equipment. _ Applications, in candidates’ own handwriting, stating The salaries and conditions of employment will be in age, qualifications, experience, and when able to take up accordance with the N .J.B. Agreement, the salary for duties, together with copies of not more than three recent positions (a) and (b) being that attaching, to Class H, testimonials, endorsed “ Demonstrator,” must be sent to Grade 8b (£429/438/447) and for position (c) that the Borough Electrical Engineer. Electrictiy Offices, attaching to Class H, Grade 9a (£365/373/381). Church Street. Epsom, so as to reach him not later than The selected candidates will be required to pass a the first post on Monday, the 18th of November. 1946. medical examination and contribute to a Superannuation Canvassing of members of the Council, directly or in­ Scheme under the provisions of the Local Government directly, for the appointment will disqualify candidates. Superannuation A ct, 1937. Candidates are required to state in their applications Applications, stating age and giving details of educa­ whether or not to their knowledge they are related to tion, technical training and experience, together with any member of, or the holder of any principal office copies of two recent testimonials, must reach the under­ under, the Council; candidates who fail to do so will be signed not later than Tuesday, the 26th November, 1946. disqualified for the appointment, and if appointed will be T. H. CARR, liable to dismissal without notice. 45-53. Sunbridge Road. Electrical Engineer and EDWARD MOORE, Bradford. Manager. Town Hall, Town Clerk. N ovember, 1946.______3386 The Parade. Epsom. 28th October. 1946. 3377 METROPOLITAN BOROUGH OF WOOLWICH ELECTRICITY DEPARTMENT COUNTY BOROUGH OF ST. HELENS ELECTRICITY DEPARTMENT Engineering Draughtsman

PPLICATIONS are invited for the appointment of A PPLICATIONS are invited for the position of A Deputy Borough Electrical Engineer at a salary in Engineering Draughtsman in the. Electricity Depart­ accordance with Class G, Grade 1 of the N .J.B . Schedule, ment, a t a commencing salary of £446 5s. per annum, and commencing a t £833 per annum. increments in accordance with the National Joint Board Candidates, preferably not more than 45 years of age. Schedule. Grade 9, Class J . should possess an Engineering Degree or its equivalent and Candidates should have had a good general technical also Corporate Membership of one of the leading education and training, followed by drawing office experi­ Engineering Institutions. Thorough experience in ence in generating station details and layout. Generating generation, distribution and the commercial development station experience would be an advantage. of an electricity supply undertaking owning a selected, The appointment will be subject to the provisions of generating station is essential, particularly in regard to the the Lo cal Governm ent Superannuation A ct, 1937. and the layout and erection of modern power station plant. successful candidate will be required to pass a medical Applications, accompanied by copies of not more than examination. three testimonials, must be made on the form Pbtainable Applications, stating age, qualifications and experience, from the undersigned, and be received not later than together with not more than three recent testimonials, 25th November in an envelope clearly endorsed " Deputy should be addressed to the Borough Electrical Engineer, Borough Electrical Engineer.” The appointment will be Electric House, Powis Street, Woolwich. S.E.18. and subject to the provisions of the Local Government received not later than the 20th November, 1946. Superannuation Act, 1937, and the successful candidate Canvassing members of the Council, either directly or will be required to pass a medical examination. indirectly, will be a disqualification. P. BREGAZZI, DAVID JENKINS. Electricity Works. Engineer and Manager. Woolwich. S.E.18. Town Clerk. Carlton Street, St. Helens, Lancs. 7th October. 1946.______3240 1st Novem ber. 1946. 3382 CORPORATION OF GRAVESEND ELECTRICITY CENTRAL ELECTRICITY BOARD DEPARTMENT North-West England and North Wales Area Draughtsmen Electrical Fitters for Instrument Work T7A C A N C IES exist in this department for two Draughts- fT lH E Central Electricity Board have vacancies at their ▼ men, at a salary of £413 per annum. Grade 8a. Class F . rising to £429 and thereafter to £442 or £459 J- office in Manchester for two electrical fitters with skilled experience in the maintenance and repair of poly­ according to ability. Considerable extensions are in progress on the distribution system and new offices and *11 phase integrating, indicating and recording meters, etc. Remuneration will be in accordance with the rates laid workshops are being designed. Power station reconstruc­ down by the Board, the present rate of pay being 28.61 tion is also in hand. Applicants will be considered from both manufacturing firms and supply undertakings. pence per hour for a 47-hour week. One draughtsman will be specifically required to deal Applicants should state their age and give full par­ ÏRI ticulars, with dates, of their education, training and with building construction work, while the other will be experience. The selected applicants will be required to concerned with mains records, wiring, diagrams, etc. pass a medical examination and to join the Board’s The conditions of employment are those of the N.J.B. Agreement and successful candidates will be superannuated superannuation scheme. Applications must be submitted, in writing, addressed after passing a medical examination. Applications should be sent to the undersigned before 16th November. to the District Manager. Central Electricity Board. Grid House. Wilmslow Road, East Didsbury, Manchester. 20. G. V. HARRAP. A.M.I.E.E., M.I.I.A., and be received by him not later than November 21st, General Manager and Engineer. 1946. 3304 3164 November 8, 1946 E l e c t r ic a l R e v ie w 6 7

BOROUGH OF LUTON ELECTRICITY COUNTY BOROUGH OF SWANSEA ELECTRICITY UNDERTAKING DEPARTMENT Appointment of Generation Engineer are mvitec* for the following appoint- A (lmdidate?mT:)IiT M AINS EN G IN EER (Development), PPLICATIO N S are invited from qualified Engineers, class ctttphI?, t?ave sound technical training and first- not over 45 years of age. unless at present in the riptjM lenF5Jf55\ of distribution technique and should give service of a local authority, for the position of ha« hiJn • on work on which planning experience “ Generation Engineer.” Applicants must have had a nSfrJSI °^ tain?d- The successful candidate will be re- thorough mechanical and electrical engineering training, «Irfi orLoc on development work in urban and preferably including experience in a manufacturing 5555* f -r5 n* - "'id work in close co-operation with the engineering works ; possess a degree or equivalent technical rkvitiK?*- ^h^ihution Engineer (Operation) under the qualifications admitting to Corporate Membership of the iJistriDution and Mains Engineer and in close liaison with Institution of Mechanical or Electrical Engineers, and the Technical and Constructional Engineer. He will be have held a similar appointment in a large Power Station responsible for the detailed layout, estimates and pro­ operating under the direction of the Central Electricity gramming of schemes involving underground cables, over­ Board. head networks¡and substations, also changeover from D.C. The successful candidate will be required to take to A.O. of the remaining D.C. portions of the urban charge of the operation and maintenance of the Depart­ areas. S alary w ill be in accordance w ith the N ational ment’s Generating Station with any extensions or Joint Board Schedule. Class J. Grade 6 (a t present £616. modifications thereto and to devote the whole of his time rising to £644 per annum). to the duties of his office. (2) DOMESTIC REPRESENTATIVE (2 Vacancies). The salary will be in accordance with Grade 2. Class J. The successful candidates will be required to carry out of the N .J.B . Schedule of Salaries, which, at the present consumer service activity with domestic consumers within time, is £874, rising to £913 per annum. The appoint­ the undertakings area of supply. Candidates should be ment will be subject to the provisions of the Local between 25 and 35 years of age and m ust possess practical Government and Other Officers Superannuation Act 1937. experience of domestic wiring installations, be fam iliar and the successful candidate will be required to pass a with positioning service terminals and meters and have medical examination. a full knowledge of domestic appliances and the applica­ Applications, which must be made on a prescribed form tion of electricity. Preference will be given to candidates obtainable from the Borough Electrical Engineer and who possess specialist experience on w ater heating. Manager. Guildhall. Swansea, together with copies of not Salary will be in accordance with the National Joint more than two recent testimonials, must be delivered to Board Schedule. Class J. Grade 10 (present salary £355. the undersigned not later than Saturday, the 30th rising to £371 per annum). November, 1946. Canvassing, either directly or indirectly, The successful candidates will be required to pass a is prohibited and will be a disqualification. medical examination and to contribute to the Corpora­ T. B. BOWEN. tion’s Superannuation Scheme. Guildhall. Swansea. Town Clerk. Applications giving age. details of training and 2nd Novem ber. 1946.______3403 experience, present position held, and accompanied by copies of three recent testimonials, should be delivered BOROUGH OF HASLINGDEN ELECTRICITY not later than F rid a y . 22nd Novem ber. 1946, to C. T. DEPARTMENT Melling. M.Sc.Tech.. M .I.E.E.. M.LMech.E.. Borough Electrical Engineer. Electricity Offices,*St. Mary’s Road. Mains Assistant Luton. Canvassing directly or indirectly will be a dis­ qualification. A PPLICATIO NS are invited for the position of MainMains W. H. ROBINSON. Assistant in the Electricity Department, at a salar:salary Town Hall. Town Clerk. in accordance with Grade I of the Administrative. Luton. Beds. Professional and Technical Division. National Joint B f- 31st October. 1946.______-______3392 Council’s Scale for Local Authorities’ Staffs (£330 x £15 to £375 per annum). METROPOLITAN BOROUGH OF FULHAM ELECTRICITY DEPARTMENT Candidates must possess the Higher N ational Electrical Engineering Certificate and must have had experience in the laying of 6.6 k V high tension mains, three-phase T1HE Council invites applications for the following distribution, and maintenance and operation of static A position in the Electricity Undertaking : — substations. Second Architectural Assistant.—Candidates must be The appointment is subject to the provisions of the not more than 35 years of age and must be either a regis­ Local Government Superannuation Act. 1937. The tered Architect or preferably an Associate of the R . I.B .A . successful candidate will be required to pass a medical Applicants must have had training and experience in the examination by the Council's Medical Officer of Health. preparation of plans and specifications, bills of quantity, Applications, accompanied by copies of three recent etc. for all types of buildings, including electricity sub­ testimonials, must be forwarded to the Borough Electrical stations. showrooms, etc. Engineer. John Street. Haslingden. Lancashire, not later The salary will be in accordance with the A.P.T. than Wednesday. 20th November. 1946. Division TV of the National Joint Council for Local L. M. BURTON. Authorities Administrative, Professional. Technical and Municipal Offices. Haslingden. Town Clerk. Clerical Services commencing a t £440 per annum and 28th October. 1946. 3305 rising by annual increments of £15 to maximum of £485. including London Weighting. Salaries are at present BOROUGH OF ABERYSTWYTH ELECTRICITY subject to an addition of cost-of-living bonus amounting DEPARTMENT to £59 16s. Od. per annum. Forms of application may be obtained on sending A PPLICATIO N S are invited for the following appoint- stamped addressed foolscap envelope to the undersigned m ents:— to whom completed applications must be returned not (a) Mains Foreman, at salary on D.J.I.C. Scale. later than 12 noon on Decem ber 11th. 1946. D istrict 4. £328 9s. per annum. CYRIL F. THATCHER. (b) Plumber-Jointer. D .J.I.C . Scale. District 4, South Town H a ll. Town Clerk. W ales. 2s. 53d. per hour. Fulham. S.W .6. 3419 (c) Junior Draughtsman and Mains Recorder, wages IMPERIAL COLLEGE OF SCIENCE & TECHNOLOGY £4 per week, plus cost-of-living bonus. Candidates for (a) should have experience with 11.000- volt overhead and underground transmission, and 4.000/ City and Guilds College 230-volt distribution, both new construction and main­ tenance. and should be capable of controlling men engaged H E R E is a vacancy in the Electrical Engineering on this work. Candidates for (b) should have experience T Dpnartment. on the side of electrical machine and of all types of jointing and substation work up to 11.000 Dower f o r a n Assistant Lecturer. The appointment is for volts, and preference w ill be given to those possessing S T r i o d of tbFee years w jth salary of £400 p.a. with overhead line construction experience. Candidates for F S R T J superannuation An Honours Degree and some (c) will be required to keep all mains records, prepare practical S perience of heavy electrical engineering are plans, and assist in surveys. Some previous experience is desirable but not essential. accompanied by full statement of qualifl- Applications, together, with not more than two recent Application. references, should be sent to the Head references, should be sent to the Borough Electrical cations, ana Engineering Department. City and Guilds Engineer. Electricity Works, Mill Street, Aberystwyth, Ä ^ b irio n Road. London. S.W.7. 3397 not later than Novem ber 15th. 1946. 3385 68 E l e c t r ic a l R e v ie w Novem ber 8, 194b

METROPOLITAN BOROUGH OF ISLINGTON BOROUGH OF HARROGATE ELECTRICITY DEPT. ELECTRICITY DEPARTMENT Appointment of Borough Electrical Engineer’s Temporary Electrical Engineering Draughtsman Se cretary

A PPLICATIO NS are invited for the above-mentioned PPLICATIONS are invited from suitably qualified position from persons having a sound experience in A persons, male or female, for the above permanent the following : Design and erection of substation buildings. position. The duties will include the supervision of the Design and layout of E.H .T. substations, switchgear and shorthand-typing and filing staff. Applicants should be transforming plant for 33 and 6.6-kV, 3-phase systems. expert shorthand-typists and conversant with modern L.T. distribution switch and fuse gear for 415/240 volts. filing methods, whilst a knowledge of the terms m use in Layout of 33 and 6.6-kV transmission and distribution the electricity supply industry will be an advantage. networks. The post is graded within the Clerical Division of the The engagement is for a period of twelve months, and N atio nal Jo in t Council’s Scales, salary £315 to £360 the salary and conditions of employment will be in (males) and £252 to £288 (females), subject to cost-of- accordance with the National Joint Board Schedule and living bonus, a t present £59 16s. and £48 2s. respectively. the Lo cal Governm ent Superannuation A ct. 1937. The The appointment will be subject to the National Joint salary will be from the commencement of Grade 9a to Council Scheme of Conditions of Service, the provisions the maximum of Grade 8, according to experience and of the Local Government (Superannuation) Act. 1937, qualifications, and the engagement will be terminated or and to the successful candidate passing a medical examina­ reviewed in light of the obligations which may arise to tion. Canvassing, directly or indirectly, will be deemed change over the Undertaking's voltage and system to the a disqualification. Candidates, when making applications, new standard. must disclose in writing whether, to their knowledge, they Forms, on which application must be made, can be are related to any member or senior officer of the Council. obtained from the Engineer and General Manager, 341/3, Applications, giving full particulars of qualifications, Holloway Road, N.7, and must be returned to him not should be addressed to me at the undernoted address, later than the 16th November, 1946. the envelopes being endorsed “ Secretary,” and should Candidates are required to disclose in writing whether, reach me not later than the 15th November. 1946. to their knowledge, they are related to any member or Copies of testimonials are not required but the names of holder of any senior office under the Council. The Coun­ three referees should be given. cil are unable to make any arrangements whatsoever for A . K E L S O . the provision of housing accommodation for the successful Municipal Offices, Borough Electrical Engineer. candidate. Canvassing, either directly or indirectly, will - Harrogate, Yorks. be a disqualification. 30th October, 1946. 3322 W. ElitC ADAMS, Town Hall. Upper St. N.I. Town Clerk. PORTLAND URBAN DISTRICT COUNCIL October, 1946.___ 3330 METROPOLITAN BOROUGH OF WOOLWICH Appointment of Electrical Engineer ELECTRICITY DEPARTMENT PPLICATIO NS are invited for the post of Electrical Combustion Engineer A Engineer, at a salary in accordance with the Agree­ ment made by The National Joint Committee of Local Authorities and Chief Electrical Engineers dated 9th July. A PPLICATIONS are invited for the position of Combustion Engineer in the Selected Generating 1941, viz. : F irs t year £524, second year £570, third year Station of the Borough Electricity Department at a com­ £616, plus w ar bonus (a t present 23s. per week), and car allowance of £60 per annum. The above salary is based mencing salary of £591 3s. per annum and increments in on the units sold during the year ended 31st March. 1946, accordance with the National Joint Board Schedule, which were* 4,704,557, and of w hich 1,624,350 were sold Grade 7, Class J . The successful candidate will be required to advise and to a large consumer. assist the Station Superintendent with respect to the Applicants should be competent to undertake the com­ efficient and economical operation of the boiler units, plete control and management of the Council’s Under­ taking. comprising E.H.T. transmission and L.T. 3-phase their associated plant and instruments. 4-wire underground and overhead distribution systems. Candidates should have had experience in the capacity The appointment will be subject to the provisions of the described, preceded by a good general technical education Lo cal Governm ent Superannuation A ct. 1937, and the and training. A sound theoretical knowledge of thermo­ dynamics and power station heat cycles is essential, and person selected will be required to pass a medical examination and to reside within the Urban District. He experience of automatic combustion control will be an will also be required to devote his whole time to the advantage. Candidates should be members or associate members of a recognised engineering institution. duties of his office. The appointment will be subject to The appointment will be subject to the provisions of two calendar months’ notice on either side. Applications, stating age, experience, and qualifications, the Local Government Superannuation Act, 1937, and and accompanied by copies of three recent testimonials, to the successful candidate will be required to pass a medical be sent to me in sealed envelopes endorsed " Electrical examination. Engineer ” not later than Wednesday, 20th November. Applications, stating age, qualifications and experience, 1946. Canvassing, directly or indirectly, will disqualify. together with not more than three recent testimonials, should be addressed to the Borough Electrical Engineer. HARRY WALKER. Electric House. Powis Street. Woolwich. S.E.18, and Council Offices, Portland. Clerk to the Council. received not later than 20th November. 1946. Canvassing 1st N o v ember. 1946.____ 3423 members of the Council, either directly or indirectly, will SCARBOROUGH CORPORATION ELECTRICITY be a disqualification. DAVID JENKINS. DEPARTMENT Woolwich, S.E.18. Town Clerk. 7th October. 1946. 3241 Junior Shift Engineer

PARK PREWETT MENTAL HOSPITAL, PPLICATIO N S are invited for the position of Junior BASINGSTOKE, HANTS A Shift Engineer, at a salary in accordance with the National Joint Board Schedule. Class F, Grade 9a, at EPU T Y Engineer required at above hospital (1,578 present £327 per annum. D beds), male, having served full engineering appren­ Candidates should have had a sound technical and ticeship and possessing professional qualification of a practical training in electrical and mechanical engineering technical character preferred. and some experience in a modern generating station. The Person appointed will assist chief engineer in super­ appointment will be subject to the provisions of the Local vising the repair and maintenance of plant and buildings, Governm ent Superannuation A ct, 1937. and the successful keep records of stores and prepare drawings, etc. candidate will be required to pass a medical examination. S alary £430 per annum rising by £12 10s. per annum Applications, giving age, .experience, and training, to­ to £455. In addition a house, light and fuel are provided gether with copies of three recent testimonials, should be free Deductions (3% on the total value of the office) forwarded to the undersigned not later than 23rd will be made under the Asylums Officers’ Superannuation Novem ber, 1946. A ct, 1909. . . . W. K. FLEMING. M.I.E.E.. Applications, together with copies of three testimonials, , Borough Electrical Engineer to reach the Clerk to the Visiting Sub-Committee at above 89. Westborough, and Manager. address not later than 14th Novem ber, 1946. 3346 Scarborough. 338I November 8, 194h E l e c t r ic a l R e v ie w 6 9

L o n d o n c o u n t y c o u n c i l COUNTY BOROUGH OF MIDDLESBROUGH ELECTRICITY DEPARTMENT t^lc School of Engineering and Naviga­ Appointment of Lady Demonstrator tio n men t e a c h m ^ 1' P°PlM'- E ' W ' the iOll0Wing ,.'1 Graduate Assistants in the Mechanical and Elec- PPLIC A TIO N S are invited for the above appointment hiSi ir S w ®eiring Dt'Partments. Apphcants should have A at a salary of £252 per annum rising by annual ? experience and be capable of taking all increments to £288 per annum, plus a cost-of-living bonus grades of National Certificate work up to A.2 standard. of, at present. £48 2s. per annum. Knowledge of electronics and ability to take the lower Candidates must have had a, good general education, 8r{!of a .eiectrical engineering an advantage. hold the E.A .W . Diploma or Certificate or other approved U) Assistant in the Marine Engineering Department. qualifications, and have a thorough knowledge of domestic Applicants should hold the Extra First Class Board of electrical appliances; they must be competent to conduct Irade Certificate, or have completed the course for this lectures, cookery demonstrations, advise on the selection certificate. This post is temporary in the first instance, and use of electrical apparatus, and competent to advise but may lead to permanency. consumers on the use of such appliances in their own Other things being equal, preference will be given to houses. The appointment will be subject to the provisions registered disabled persons. Burnham scale salary £300 x of the Local Government Superannuation Act, 1937, and £15 to £525 (men), plus London allowance, minim um £30 to the successful candidate passing satisfactorily a medical a year, and additions for training and qualifications as examination. applicable. Commencing salary according to teaching Applications, giving full particulars of training and and industrial experience. Application forms from the experience, and accompanied by copies of recent testi­ Education Officer (T.l). County Hall. S.E.l (stamped monials, must reach the Borough Electrical Engineer, addressed foolscap envelope necessary), returnable by 7th Corporation Electricity Works, Snowdon Road, Middles­ December. 1940. H.M. Forces personnel abroad should brough, not later than 9 a.m. Monday, 2nd December. apply by letter. ___ 3332 1946. E. C. PARR. BOROUGH OF WATFORD ELECTRICITY DEPT. Municipal Buildings, Town Clerk. Middlesbrough. A PPLICATIONS are invited for the position of 31st October, 1946.______3374 Salesman-Representative. Applicants, who should be between the ages of 25 and 35 years of age and have CITY OF GLOUCESTER ELECTRICITY DEPT. had experience in electricity showrooms, should be familiar with tariffs and general showroom routine, whilst prefer­ Assistant Mains Draughtsman ence w ill be shown to those having display ability. The salary offered is £255/£300 per annum, plus a cost-of-living bonus of £59 16s., in accordance w ith the A PPLIC A TIO N S are invited for the position of Assistant Miscellaneous Division. Grade 1, of the National Joint Mains Draughtsman at a salary in accordance with Council Scale of Salaries. The appointment will be Class G, Grade 9, of the N.J.B. Schedule (£380 per subject to the provisions of the Local Government Super­ annum rising by biennial increments to £395 per annum). annuation A ct. 1937. Applicants must be fully qualified draughtsmen with a Applications, giving full details of age, education and sound knowledge of modern drawing office practice and experience, together ' w ith copies of testimonials, to be general mains records, and be familiar with building and forwarded to the undersigned and be received not later structural engineering as applied to substations, etc. The than 5th December. 1946. successful candidate will be required to pass a medical A. W. BARHAM. examination, and the appointment is subject to the Local Chief Engineer and General Manager, Government Superannuation Act, 1937. Borough of Watford Electricity Department, Applications, stating age. qualifications and experience, Electricity House. The Parade. Watford.______3323 accompanied by copies of three recent testimonials, should be addressed to reach the undersigned not later than first METROPOLITAN BOROUGH OF WOOLWICH post on Monday, November 25th, 1946. ELECTRICITY DEPARTMENT EM IL BRAATHEN. Commercial Road. Chief Engineer and Appointment of Two Control Room Engineers Gloucester. General Manager. 3359

APPLICATIO NS are invited for the appointment of CITY OF LANCASTER two Control Room Engineers for shift duties at the Woolwich Power Station. Candidates should have had Assistant Shift Charge Engineer previoùs experience in a sim ilar position, m ust have first-class technical qualifications and sound practical PPLICATIONS are invited for an Assistant Shift experience in the operation of a modern power station. A Charge Engineer at Caton Road Generating Station. The salary will be in accordance with Grade 9. Class J. Salary in accordance with the N.J.B. Schedule, at of the National Joint Board Schedule, commencing at present Grade 9, Class H . £402 per annum. £446 5s. per annum. The appointment will be subject The appointment will be subject to the provisions of the to the provisions of the Local Government Superannuation Local Government Superannuation Act, 1937, and the Act. 1937, and the successful candidates will be required selected candidate will be required to pass a medical to pass a medical examination. examination. Applications, stating age. qualifications and experience, Experience of the operation of large boilers and general together w ith not more than three testimonials, should be power station operation desirable. addressed to the Borough Electrical Engineer. Electric Applications, stating age. qualifications and particulars House. Powis Street. Woolwich. S.E.18. to reach him not of training and experience, also probable date on which later than 23rd Novem ber. 1946. Canvassing, either duties can be taken up. together with copies of two directly or indirectly, w ill disqualify. testimonials, must reach the undersigned not later than DAVID JENKINS. Saturday, Novem ber 16th, 1946. Town Hall. Town Clerk GEO. C. MILNES, M.C.. M.I.E.E., Woolwich. S.E.18.______3316 " Electricity,” City Electrical Engineer. SOUTHERN RAILWAY North Road, Lancaster.______3233 LONDON TRANSPORT Electrical Draughtsmen

A PPT T C A T IO N S are invited for two Senior Draughts- ONDON Transport has a vacancy for an Electrical A niln in the London area. Applicants must be L Tester for maintenance work on supervisory control filialiflpR in electrical engineering with workshop training. equipment of the automatic telephone type used for the 25 Jm Jvnerience of the layout and design of electrical remote control of traction substations. Previous experience one having expe an(j one having similar experience of of this type of equipment or of auto-telephone exchange traction e9ulP*** ' sUbstation layout and design, equipment is essential. Inclusive rate of pay 134s. per mercury arc rect , w jn be engaged on a temporary week of 47 hours. Successful .can if suitable, for appointment to Applications, stating age and giving full particulars of basis, but will n * t position. Salary according to experience and qualifications, together with references a progressive PeJ ^ perience. regarding general and technical education should be sent Qualifications aim s^a^ ng age> qualifications and experi- to the Superintendent of Recruitment and Training Apply in wriWHMi trical Engineer. Southern Railw a y, (WR.S.2273), London Passenger Transport Board, 566. ence. to—Chief Liecir don BrUJ g E x 3314 High Road. Chiswick. W.4. 3380 15, St. Thom as Street, 70 Electrical Review Novem ber 8, 1946

A British firm of Telephone Manufacturers in India has A SSOCIATED Portland Cement Manufacturers Ltd. vacancies for experienced Telephone Engineers. A Senior Assistant Electrical Engineer, with initiative Applicants should be* capable of planning automatic and experience of the installation and maintenance of telephone exchange networks, developing area layouts, distribution systems in large factories. Applicants should assessing traffic data, and generally advising customers on be capable of negotiating contracts with equipment manu­ technical requirements. The post offers good prospects to facturers. and should preferably have a degree and have suitable engineers who should, preferably, be aged about spent some years on the manufacturing side. The post 30. Good salary with kit and travelling allowances and carries with it gcod prospects of advancement. Salary usual leave. Apply, giving full details of qualifications w ill be between £600 and £700 per annu m , dependmg and experience and whether married or single, to— Box upon experience, plus £105 per annum war bonus plus No. 112, Dorlands. 18/20, Regent Street. London. S.W .l. staff bonus. Pension fund. Applications, which should 3221 give full details of training and subsequent experience, large retail organisation is willing to consider applica­ should be submitted not later than the 22nd November. A tions from ex-Servicemen for a Senior Buyership. 1946. and should be addressed to the Chief Engineer, electrical goods; initial salary w ill be £700 to £800 a year. A .P .C .M . L td .. 192. A shley Gardens. S . W . l . 3211 It is essential, however, that the candidate should have RIT ISH Insulated Callender’s Cables Ltd. require detailed knowledge of radio, as it is hoped that this B urgently a number of Draughtsmen for steel struc­ appointment will lead to a Directorship responsible for tural work. Positions permanent, with superannuation buying all electrical and radio goods and will command scheme; salary according to experience. Apply, giving a salary of between £1.500 to £2.000 a year. Officers who full particulars, to— Staff Officer, B.I.C.C. Ltd., Prescot, have had outstanding careers in the Signals or Radar Lancs. 3402 branches of any of the three Services would be suitable /'"I A BLE Makers in Midlands require experienced candidates. Preference would be given to applicants V_y Foreman capable of taking complete charge of pro­ between 35-40. but candidates between 30 and 45 would duction of rubber longitudinal and forcing machines, also be considered. W rite — B o x 336. L . P . E . , 110. S t. M artin 's rubber m i r i n g , callendering. etc. Apply, stating age. Lane. W .C .2 . 3369 experience and salary required, to—Box 3263, c/o The A CCOUNTANT for senior position required by the Electrical Review. Sussex Electricity Supply Co. Ltd. at Littlehampton. H A R TERED Electrical Engineer required for leading Preference given to one with experience of electricity C group of cinemas with head office in London. _ Ex­ supply or similar public utility undertaking. Appoint­ perience of the cinematograph industry not essential if ment will be permanent and pensionable. Applications other qualifications compensate. State age. details of in writing, giving details of age. experience, etc.. and experience and salary required. Reply in confidence to salary required, to— Electricity Office. Littlehampton. 3302 Managing Director.— Box 3337,c/o The Electrical Review. N important engineering concern in the Croydon p iH IE F Storekeeper, with experience in handling stocks A district invites applications from males who have Vy of piece parts, required by a firm mass producing passed their matriculation (or equivalent) for the follow­ light engineering and electrical products. Orpington area. ing: (1) Junior Engineers, age up to 26 years, technical — Box 3409. c/ o The Ele ctrica l Re view . education up to the Ordinary National Certificate in Elec­ /^ITVTT. Service Commission. Applications are invited trical Engineering and studying for the Higher National, for the following poste at the Royal M ilitary Academy, experience in telecommunications engineering, specialising Sandhurst: Head of Department of Applied Science and in telegraphy an advantage, working knowledge of French. Electro-Technics; Head of Mathematics Department ; German or Spanish also an advantage; (2) Technical Head of Department of Modem Studies; Head of Depart­ Literature Writers, age up to 26 years, technical educa­ ment of Languages (French. German. Spanish); Senior tion up to Ordinary National Certificate in Electrical Lecturers and Lecturers in Science (Physics. Chemistry. Engineering. Ability in the preparation from technical Engineering); Senior Lecturers and Lecturers in Mathe­ data and under the guidance of a supervisor of technical matics: Senior Lecturers and Lecturers in Modem Studies; descriptions of apparatus and technical articles for pub­ Senior Lecturer in Languages (French. German. Russian). lication in a lucid and attractive manner; (3) Engineer The inclusive scales of salary are (Heads of Departments) to Supervise Technical Literature, technical education up £950 x £30 to £1.100, (Senior Lecturers) £650 x £25 to to Higher National Certificate in Electrical Engineering, £850, (Lecturers) £400 x £20 to £600. E v e r y assistance experience in the preparation of technical literature, will be given in finding accommodation. Candidates must including descriptions of apparatus and articles for publi­ be cf British nationality and must have not less than a cations. etc.. able to supervise the work of technical writers. second class honours degree. Successful candidates should Applications, giving full particulars of qualifications and be prepared to take up d u ty on 1st Ja n u a ry . 1947, or as experience and salary required, should be addressed to— soon as possible after that date. The posts are permanent B o x 3334. c/ o The Ele ctrica l Re view . with superannuation benefits under the Federated Super­ A PPLIC A TIO N S are invited by a factory in the North- annuation System for Universities. Full particulars of West for Electricity Meter Testers. Candidates must the posts and a form of application may be obtained have had sound technical experience and should be from the Secretary. Civil Service Commission. Burlington thoroughly conversant with the construction and use of Gardens. W .l. quoting No. 1677. Application forms must single and polyphase metering equipment. Previous be returned to him b y 28th Novem ber. 1946. 3350 experience is essential. Write, giving particulars and IV IL Service Commission. The closing date for entry - salary expected, to— Box 3413. c/o The Electrical Review. C into the recently announced competition for posts as RM ATURE Winder or good Improver required, used Assistant Engineers in the Ministry of Transport has been A to all types of motors. Knowledge of dismantling extended to 1st Ja n u a ry . 1947. T h e salary scales have and assembly of motors a good advantage. Apply to— also been revised since the original announcement; they r Messrs. Charles H. Harwood & Co. Ltd.. 32, Meyrick Road. are subject to provincial differentiation, and in London r WOlesden. N.W.10. 114 are £400 (at age 26) rising by annual increments to £650 ; A RM A T U RE Winders and Improvers urgently required. for m en and £380 rising b y annual increments to £550 f Top rates and good conditions.— Collins Electrical for women. There is also a consolidation addition of £90 ; L td .. 22. S t. A lb an ’s Place. London, N . I. 85 for men and £72 for women. Selected candidates aged ~ A RM ATURE Winders and Improvers required, A.C. 26 on appointment will enter at the minimum of the and D.C., top rates, good working conditions.— scale; those under 26 w ill receive £25 less for each year ; Electrical Power Repairs (Gillingham) Ltd., Strover by which they are below that age. and those over 26 . Street. Gillingham. Kent. 9664 may receive an increment for each completed year by A RM A T U RE Winders and Improvers urgently required. which they exceed that age. subject to a maximum of * four increments on entry. Assistant Engineers are eligible - Top rates and good conditions.— Box 113, c/o The for consideration for higher posts in the engineering grades. - Electrical Review. Candidates must have been bom on or after 2nd August. A SSISTANT Accountant (Lady) required by city firm 1905. and have reached the age of 25. Selection w ill be £ of exporters. No Saturdays. Write—Box N.E.G.. by competitive interview in London held in conjunction 7 c / o 95. Bishopsgate. E.C .2 . 3421 with the Civil Service Commissioners. Application forms A SSISTAN T Engineer required by consulting engineers and further particulars may be obtained from the Prin- - in London. Must have good education to degree cipal Establishment Officer. Room 8022. Ministry of ' standard in electrical engineering and works apprentice­ Transport. Berkeley Square House. W .l. or from the - ship. including test bed experience. Salary up to £450. Chief Officer. Civil Service Commission, at the following y according to age and experience. Apply, giving full addresses: (India) 10. Underhill Lane. Delhi: (Egypt) particulars, to— Box 3393. c/o The Electrical Review. 8. Sharia Tolumbat. Garden City. Cairo; (Italy) c/o SSISTANT Engineer required by established firm of G.H.Q.. C.M.F.; (Germany) c/o 2nd Echelon. G.H.Q.. A electrical contractors (London). Applicant must be B.A.O.R. The last date for the receipt of completed r* of good education, with practical, technical and commer­ applications is 1st Ja n u a ry . 1947, but applications from L cial experience. Full particulars to—Box 3201, c/o The candidates now serving in the Forces will be accepted up Electrical Review. to 31st March. 194?. 3351 f November 8, 1946 E l e c t r ic a l R e v ie w 71

C ^Vni-,.'* r in^ ormer Designer wanted, w ith wide experi- T ^ N G IN EER S and Draughtsmen are invited to apply to salary snitiS8e and high-voltage transiorraers. Liberal a large electrical engineering firm in the Midlands Parsons ¿ m£n- Apply—Personnel Manager. C. A. which has vacancies in the switchgear department for Tvne fi ctaf; Ltd., Heaton Works. Newcastle-upon- Technical Sales, Contract. Costing and Design Engineers; /^ T P r ’t p a t ! age* experience and salary required. 3306 also experienced Technical Engineers capable of handling Assistant required for stores office. Must large projects for generation, transmission and distribution. rf00<* knowledge °* electrical material.— London Vacancies also exist for Draughtsmen for circuit diagram Blackfriars Road, S.E.l. 104 and general work.— Box 69. c/o The Electrical Review. | |lLLLC7riilCS. oil manufacturing company. S.E. INEXPERIENCED A.C. and D.C. Winders required, area, requires graduate, not over 35. to take charge i N.W. London.— Box 9839, c/o The Electrical Review. or electrical test laboratory for development and produc­ tion. tealary according to experience and qualifications. In ex p erien ced Constructional Steelwork Draughts- Position is pensionable and has excellent prospects.— Box man, used to transmission lines and masts, required Electrical Review. for mast design section. Location of work is at D R A U G H T SM A N required, experienced up to 500 kVA. Chelmsford. Basic salary up to £7 10s. per week, Promising and well-paid position. Apply, stating according to experience and ability, plus 25% staff war age and experience, to— Brentford Transformers Ltd.. bonus.— English Electric Co. Ltd., Queens House, Kings- Windmill Road. Brentford. Middx. 3237 way. W.C.2. 3232 T\RAUGHTSMAN, with experience of H.T. and L.T. Tn 'X PER IEN C ED Electrical Inspector and Tester wanted U oil circuit breakers and metalclad switchgear, A- i for mercury arc rectifiers and air-cooled transformers. required for South Midlands. Technical man preferred. South London district. State experience and salary Write, giving full details of experience, technical educa-- required.— Box 3354, c/o The Electrical Review. tion. age and salary required.— B o x 3214. c/o The ~ O X PER IEN C ED Production Engineer required by elec- Electrical Review. trical engineering company (South-West Country), RAUGHTSMEN required by switchgear engineers. to be responsible for mass production of all types of D Experienced in contract work, protective gear dia­ fractional h.p. motors. Must have initiative and organis­ grams or design. Applications in writing, with full parti­ ing ability. State experience and salary required.— B'ox culars. to— Ferguson, Pailin Ltd., Manchester, 11. 86 3358, c/o The Electrical Review . RAUGHTSM EN required in N.E. London area. Two "Jn 'OREMAN required, take charge electrical assembly D Seniors with sound mechanical knowledge and -1- and testing fluorescent lighting units. Able train experience in E.H.T. outdoor switchgear of the oil and control male and female staff. East London area.— minimum type. One Senior with experience of steelwork, B o x 3327, c/o The Electrical Review . cable ducting, overhead lines, etc.. for outdoor switching 'J n'OREMAN wanted by leading firm of cable manufac- stations. One Intermediate with experience of control turers for copper wire mill, including pickling plant boards, indoor cellular gear and kiosks, knowledge of and annealing ovens. Applicants should be between 30 diagrams an advantage. Good salary offered to suitable and 40 years of age and must be conversant with all men. A p p ly, stating age and experience.— B o x 3243, c/o modern methods and fully capable of taking complete The Electrical Review. charge of plant, including die room for the refinishing of RAUGHTSM EN, preferably with telecommunications synthetic and diamond dies. The position, which is a D experience, required by large firm in the Midlands. staff appointment, is progressive, and superannuation Maximum salary £350 plus cost of living bonus. Write, benefits are available.— Box 3390, c/o The Electrical giving details of experience, age, and salary required.— Review . Box 11, c/o The Electrical Review. TN D IA. Wanted, for 4 or 6 years only, by European RAUGHTSM EN (Senior) required for layout of elec­ -1- firm in India, experienced Electrical Engineer, age trical services, substations and lighting for new D about 45-50, with administrative experience in the wide strip mill. Must be familiar with electrical controls generation and distribution of electricity for public of tandem mills and reversing mills. Office situated supply. Education, good standing necessary, and Newport. Monmouthshire, later may move to Banbury. previous service in India most desirable. Salary Rs.2.500 Apply—Northern Aluminium Company Ltd., General per month, plus Rs.500/- overseas allowance if domiciled Engineering Department, Banbury. 3110 in U.K., but no pension or provident fund. Free fur­ LECTRIC Lamps (miniature) Foreman Charge- nished quarters, light and fuel, and four months’ leave E hand, South London factory. Qualifications, stem on full pay every other year. Write—Box 1390, c/o making, head lamps in particular, sealing, etc. Some Charles Barker & Sons Ltd., 31. Budge Row, London. knowledge of filaments an asset.— Box 3152, c/o The E.C.4. 3329 Electrical Review. U N IO R Engineer with experience of large lighting and T^LECTRIC Wire and Cable Makers in the Midlands J power installations, estimating, correspondence, pro­ invite applications for a vacancy as Chief Inspector. gressive post. Write fully, giving particulars of training Duties will include quality control of all products during and qualifications and salary required, to—C. A. Newton manufacture and final inspection. Applicants should give & Co. Ltd., St. James Street, Derby. 3355 age, past experience and salary required to— B o x 3264. T c/o The Electrical Review. AMP Production Engineer. A vacancy exists in a "p'LECTRICAL Engineer for Burma, with B.Sc. degree North of England factory for a Lamp Production Engineer with wide experience in the manufacture of all or equal, or Associate Member of the Institution of classes of electric lamps. Only applicants with the right Electrical Engineers. Must have experience of power and experience nee'd apply, giving full details, references and boiler plant and running maintenance of works plant. salary required.— Box 3373, c/o The Electrical Review. Cement works experience desirable but not essential. Three years' agreement, renewable thereafter by mutual A N A G E R or Manageress of good appearance and consent. First agreement terms according to qualifica­ M personality required for high-class electrical and radio tions. Company provides free passage, partially furnished retail and art goods business, 30 miles from London. Must accommodation and medical attendance. Write, stating be thoroughly capable and able to take full control. Write age. whether married or single, and enclosing copies of with particulars, stating age, experience and salary re­ references, to — B o x B.487, c/o Streets. 110, Old Broad quired.— Box 115, c/o The Electrical Review. Street. E.C.2. 3274 lY/rECHANIC to assist foreman. Small but rapidly TT^LECTRICAL Engineer with practical and general expanding organization. Electro-mechanical experience of installation, maintenance and fault- engineers, world export, require all-round mechanic to localising required, for permanent employment in the understudy and assist machine shop foreman. Eventual specialised field of X-ray engineering. Applicant must promotion for right applicant. First-class opportunity for be willing to travel in the United Kingdom. Apply by energetic man who desires progression. London area.— lptfpr R a tin e age. experience, etc.. to— V ictor X -ray Cor- Box 3400. c/o The Electrical Review . Doration Ltd 15/19. Cavendish Place. London. W .l. 3371 Tl/rETER Repairer and Tester: Applicants must have ^TFGTRICIANS wanted. Apply—J. H. Plant Ltd.. -Lt-L had considerable experience in the repair and test­ J L i 99, S t Martin’s Lane. W.C.2. 3319 ing of all types of watt-hour meters, indicating instru­ T ^ N C IN EER required by large firm in London area for ments and tim e switches; rate Is. 10.3d. per hour, plus H i Hp^iizn and development work on fractional horse- 8d. per hour war bonus per 47-hour week. Installation “ motors P re v io u s experience essential. A degree Inspector: Applicants must be experienced electricians, K^SiLtr&al engineering is desirable. Write giving full conversant with the I.E.E. wiring regulations and able in electrica . an

"lyrORTH-East Coast firm requires Engineers between EPRESEN TA TIVES required by Internal Telephone 25 and 30 years of age, as follows: (1) For Turbo- R Company (rental) for London. Cardiff. Newcastle. Alternator Department to assist with tenders and following Glasgow, Norfolk and Suffolk, Kent. Thorough training up contracts, etc. Preferably with degree in electrical given. Applicants must have had previous experience engineering. (2) For Turbine Works Department to assist speciality selling and must not be older than 45. Very with technical work, testing, etc. Preferably with good income for right men.— Box 3297, c/o The Electrical engineering degree covering thermo dynamics. (3) For R eview . Land Boiler Department to assist with tenders, testing, EPRESEN TA TIVE required to obtain contracts for etc. Preferably with engineering degree. Please give full R well-established firm of electrical contractors wishing particulars with application and state salary required.— to expand. Expenses allowance or fixed salary and liberal B o x 3208, c/o The Ele ctrica l R eview . commissions. Excellent prospects for right man. Previous FFIC E Assistant for Malaya, about 25, accustomed experience and good connections essential.— B o x 9842, O sales electrical equipment, experience stock record­ c/o The Electrical Review. ing. correspondence and general office routine, with some EALER-in required for electric lamp factory. Good knowledge accounts. Salary £35 to £40 per month, plus S prospects for right man. Applications, giving full temporary cost of living allowance. Passage paid. Write details of age, experience and salary expected, to—The — B o x P H . 595, D eacon’s Advertising, 36, Leadenhall Manager, British Luma Co-operative Electric Lamp Society Street. E.C .3 . 3345 Ltd.. Shieldhall, Glasgow. , 3372 PER A TO RS wanted, cable trade. North Midlands, for EN IO R Design Draughtsman for electrical and mechani­ O all branches wire drawing, tinning, extruding, S cal design work, experienced in detailing for domestic diamond polishing, etc. Good steady job and housing electrical products for fractional horse-power and small arranged for right types. Write in confidence, giving universal motors. Salary from £450 per annum. Age not details of experience, etc., to— B o x 3121, c/o The under 25. Please apply, giving details og age, experience, Electrical Review. salary required, to—Box 3379, c/o The Electrical Review. PPO RT U N ITY for young man with flair for publicity QHOWROOM Assistant required, previous experience O and sales promotion and to act as assistant to sales ^ essential. Apply in writing, stating experience, age manager in transport engineering concern. Write, stating and salary required, to— Giles (Electrical Engineers) Ltd.. experience, age, salary, etc., to—Box 3081, c/o The 9/11, Victoria Colonnade, Southampton Row, W .C.l. Electrical Review. 3223 O W ER Station Attendants for industrial installation. Q K ILLED Armature Winder required for India. £45 P Conversant with switchboard and turbine driving. ^ per month plus ten per cent, of Bombay concern’s R a te , 21s. 5d. per shift of 8 hours, 6 shifts worked, 7 paid. profit. Fare paid out and home after four-year period. — City of Birmingham Gas Dept.. Lord St.. Birmingham. Must be single man with full winding tradesman 3389 apprenticeship.— Box 3191, c/o The Electrical Review. RODUCTION Engineer with good knowledge of QOUTH Shields Marine School. Principal, J. Har- P modern methods for electrical engineering firm ^ greaves, M.A.. Ph.D. Required as early as possible employing 1,000. Must be able to understand and enforce a Lecturer in Electrical Engineering. Graduate or rigidly the system operating throughout the works, stores, equivalent qualifications, and industrial or professional etc. Good disciplinarian. Reply, stating experience and experience required. Salary according to the Burnham salary required.— Box 3228, c/o The Electrical Review. Technical Scale with appropriate allowances. Residential RODUCTION Engineer, with planning experience, accommodation available for a single man. Immediate P required for mass production of light engineering application is requested. Further particulars and an and electrical parts on assemblies. Good scope and salary application form may be obtained by sending a stamped for man well-acquainted with modern flow production and addressed envelope to the Principal, Marine School. methods, time study, shop loading, etc. Orpington area. South Shields. 3308 — B o x 3410, c/o The Ele ctrica l Review . S T O R E K E E P E R Assistant required with knowledge of RODUCTION Manager required by engineering firm electrical contractors’ stores. Apply in writing, giving P engaged in the manufacture of A.C. and D.C. motors previous experience, age and salary required, to— Giles and switchgear. Applications will be considered from (Electrical Engineers) Ltd.. 9/11. Victoria Colonnade. engineers with good academic qualifications together with Southampton Row, W.C.l. 3224 executive works experience. The position demands SW IT C H BO A R D Attendant required for Class F station. capability of controlling functions such as production ^ should possess technical knowledge and have had planning, manufacturing methods, time study and tool experience in the operation of E.H.T. and L.T. switch­ design. Excellent prospects with an expanding company boards. Present rate of p ay 2s. 7£d. per hour. A pplica­ for a person with initiative and drive.— Box 3313, c/o tions to the Chief Engineer. Slough Estates Ltd.. Trading The Electrical Review. Estate. Slough. 3309 X> AD IO Engineers. Large firm in London area requires W ITCHGEAR Draughtsmen required for expanding experienced Radio Set Designers, previous experience essential. Write, stating age, experience and salary S company in the Midlands, some experience circuit required, to— B o x 3320, c/o The Ele ctrica l R eview . breaker equipment for power and substation installations EFRIG ERA TIO N . Sales Engineer-Manager required essential. State age, experience and salary required.— Bo x 3411. c/o The Ele ctrica l R eview . R to take complete control of commercial refrigeration department of a large electrical establishment in York­ rpEC H N IC A L Sales Engineer required by London com- shire with many branches. Applicants must have a wide pany to develop the sale of high-grade insulating knowledge of all types of domestic and commercial material in this country. Applicants should have wide refrigerating plant; also suitable practical and technical practical and selling experience and preferably possess a knowledge together with commercial and sales organising knowledge of French. Send full details training, quali­ abilities. Reply fully, stating age, details of experience, fications and experience and remuneration required to— sales results and salary required.— Box 3326, c/o The Bo x 3360. c/o The Ele ctrica l R eview . Electrical Review. npRA N SFO RM ER Design Engineer required, experienced EPRESEN TATIVE for London, with connections in all types up to 500 kVA. Promising and highly- R wholesalers, shippers, etc., required at once by paid position. Write, stating age and experience, to— makers of lighting fittings. Commission basis.— Box 9849, Brentford Transformers Ltd.. Windmill Road, Brentford. c/o The Electrical Review. Middx. 3236 T> EPRESENTATIVE for South Coast required by RA N SFO RM ER Draughtsmen required for Production -t*' manufacturer of electric appliances. Must reside in T D.O., up to 2,000 kVA. Experienced men are the area. State age, experience and salary required.— invited to apply, stating full particulars, to— Personnel B o x 3325. c/o The Ele ctrica l R eview . Officer. Foster Transformers & Switchgear Ltd., Apex EPR ESEN T A T IV E (Junior) required by manufacturer Works. South Wimbledon. S.W.19. 3255 R of electric appliances to cover Midlands and South \\JTO RK S Manager required for electrical manufacturers Wales as deputy to senior representative. Must reside in * * with works in Brazil. Must be experienced produc­ B ’ham and be car driver. Good progressive opening for tion man. high grade executive ability, modern ideas, ambitious young man. State age and salary required.— knowledge of Portuguese an advantage. Only energetic B o x 3324, c/o The Ele ctrica l R eview . men of high calibre sfiould apply with fullest particulars. EQ UIRED , for extensive development programme, —B o x 3338, c/ o The Ele ctrica l Re view . R Electrical Draughtsmen with experience in steelworks \\J rO RK S Manager with experience radio and electrical H.T. and L.T. distribution schemes, substation design and instrument manufacture is offered permanent past layout. A.C. and D.C. heavy industrial control gear. w ith good salary and prospects.— B o x 3429 c /o The Draughtsmen with similar experience in other industries Electrical Review. would be considered. Apply by letter, stating age, experi­ V - ra y Technician required for India. • Must be able to ence and salary required, to— Chief Draughtsman, Dorman construct, repair and service X-ray equipment of all Long & Co. Ltd., Central Engineering Dept., Britannia types. Apply m first instance to Box 3269 c/o The Works, Middlesbrough. 41 Electrical Review. N o vem b er 8, 1946 E l e c t r ic a l R ev ie w 73

Di'îsaticf . APPOINTMENTS FILLED LEC TRIC A L Contractors’ Supervising Engineer, long experience, electrical and mechanical, capable, prac­ s i i ,V p Ml 0 IY havin* 1)6611 so often expressed that un- E fhn : ,lr>plicants are left in ignorance of the fact that tical. energetic.— Box 9757, c/o The Electrical Review. that AHimt1- aPPlied for has been filled, may we suggest pLEC TRIC A Ii Engineer (46) seeks progressive appoint- ■irrivr.,1 Mf ^ n<>tify us fo that, effect when they have Î 4 ment leading to advancement, supervisory or a decision? We will then insert a notice free managerial. Design, lay-out, estimating of large private and industrial lighting, power and heating installations. r ï r 1 Rn,,y.'l.ï''r this h™ iinK- H 4 • H ol Luton Assistant Station Supt.. District Conversant with office management, control of skilled and Engineer (Urban) and Junior District Engineer; unskilled labour.— Box 9786. c/o The Electrical Review. City and County of Lichfield—E.H.T. Plumber Cable LECTRICAL Engineer (25) D.F.H.(Hons.), Grad. Jointer, City of Oxford. Senior Demonstrator; County E I.E .E . seeks permanent progressive position South Borough of Brighton— Chief Constructional Assistant. of England or Continent. Four years as electrical officer All applicants are thanked. R.N.V.R. following thorough practical training. At present engaged on switchgear development.— Box 9833, SITUATIONS WANTED c/o The Electrical Review. A production executive (34), desires responsible position T^LEC . Foreman, 20 yrs.’ exp., large installations and in instrument or radio factory. Good technical and maintenance, requires progressive position, London production experience, 14 years in industry.— Box 981G, area, own car.— Box 9827, c/o The Electrical Review. c/o The Electrical Review. ‘p 'L E C T R I C I A N , 25 years’ first-class experience, charge- D VERTISER (41) desires change. Over 22 years’ hand, screwed conduit and heavy industrial installa­ A experience electrical instrument making (18 years tion and maintenance, A.C. and D.C. motors, control, chargehand instrument assembly «Sc calibration).— Box switchgear and plant erection.—Box 9870, c/o The Elec­ 9783. c/o The Ele ctrica l R eview . trical Review. A .M .I.E.E. (32), seeks responsible position in or near T^N ERG ETIC Elec. Eng. requires position at home or London with a growing firm. Flair for compiling abroad as Sales. Buying, or Tech. Rep. Served advertising literature, technical letters, and replying tech. college, bench, D.O., buying, production and plan­ speedily to customers’ correspondence.— Box 9864, c/o ning; 4 i years’ W .O .l Arm. Art. E., I/C Base W/Shops, The Electrical Review. R .E . M .E . — B o x 9855. c/o The Electrical Review . A N Electrical Installation Engineer and Draughtsman TU 'N G IN EER, A.M .I.E.E., Representative with 12 years’ wishes to open negotiations for a permanent execu­ contacts in Birmingham and Midland Counties, tive appointment in London, Herts, or Beds. Preferably desires change; details.— Box 9865, c/o The Electrical in surveyor’s dept, of organisation controlling hotels, Review . multiple stores, etc., or with insurance co.. manufacturers X ^ N G I N E E R , A .M .I.E .E . (36), 20 yrs.’ exper. manu- or contractors. Sound technical and practical background. facturing and development. Chief draughtsman all 25 years’ experience in all branches of contracting and types dynamo electric machinery. Requires progressive maintenance. Well versed in building and allied trades, position as Assistant Production Manager or Assistant and in general engineering. Minimum salary £800 p.a.— Chief Engineer. London or Home Counties. Minimum Box 9871. c/ o T h e Ele ctrica l R eview . salary £650.— Box 9772, c/o The Electrical Review . A R M A T U R E Winder. A.C. Bootle 2697) or 28. Victoria Street. W estm inster. London. Traders buying and selling hereunder must observe the S.W.l (Telephone Number. Abbey 2101). 96 Restriction of Resale Order, S. R. & O. 1942 No. 958. TT'LECTRIC Lamps. Flashlights. Flashlight Bulbs, Port- abie Fires. Accessories. Prompt delivery.— Suplex CARDIFF RURAL DISTRICT COUNCIL Lamps Ltd., 50, Gray’s InnRoad, London. W.C.l. Holborn 0225. } J £ TT'LECTRIC Motors. 1/3 h.p., 3.000 r.p.m., D.C. 110 N E Brush 150-kVA Outdoor Transformer, 11.000/ volts. Also 220 volts. Stock delivery. £6 each.— O 6,600 volts, 3-phase, 50 cycles, wound delta/star, John Steel. Clyde Mills, Bingley, Yorks. 84 w ith cable and boxes, m anufactured 1938. F u rth e r p arti­ X^LEC TRIC Motors and Dynamos. We hold one of the culars from, and offers to. the Electrical Engineer and -XL largest stocks of new and secondhand motors. Second­ Manager. 20. P a rk Place, Cardiff. 3344 hand machines are thoroughly overhauled. Inspection and tests can be made at our works. For sale or hire. Send Cooksley & Co. Ltd. offer large selection of used your enquiries to— Britannia Manufacturing Co. Ltd.. A • Electric Motors. A.C. and D.C. Write— 21/25. 22-26, Britannia Walk, City Road. London, N .l (Phone, Tabernacle Street. London. E.C.2 (Monarch 3357/58). 46 5512-3 Clerkenwell). 13 A Diesel Generating Set by Davey Paxman. 25 h.p.. XT'LECTRIC Motors. A.C. and D.C. We supply all types single cylinder, vertical, cold start with belt-driven T j and sues 0f electrical machinery. f Slow speed reduc­ alternator. 15 kVA, 400/3/50. 1.000 revs. Cheap for tion gears can be supplied to customers’ requirements with quick clearance.— Box 3426. c/o The Electrical Review. short deliveries. Send your enquiries to— Be-Be Engineering. .C. and D.C. House Service Meters, all sizes, quarterly 3. Retreat Close, Kenton, Middx. (VTordsworth 4928). 42 A and prepayment, reconditioned, guaranteed one year. Repairs and recalibrations.— The Victa Electrical Co., 47. TJ'LEC TRIC Welding Plant. Engine and Electric, A.C. Battersea High Street. S.W .ll. Tel. Battersea 0780. 19 X.L driven. 300 amps, output, complete with weather­ .C. and D .C . Motors, all sizes, large stocks, fully proof covers.— B o x 34, c/ o The Ele ctrica l Re view . A guaranteed. — Milo Engineering Works, Milo Road. TT'TRE Elements. Good quality, pencil type. Wound E a s t D ulw ich, S.E .2 2 (Fo rest H ill 2278-9). 102 -L nichrome wire. 9£", 1 kW. 48/- dozen; 500 lots, .C./D.C. 5-valve Superheterodyne Sensitive 3-wave 3/7 each; 1.000 lots. 3/6 each; 5.000 lots. 3/3 each. A Band Receiver. Excellent tone. Attractive modern 8".’ 750 w .. 42/- dozen; 500 lots. 3/1 each; 1.000 lots, cabinets in ” Plastele ” or polished wood. £16 16s. Usual 3/-; 5.000 lots. 2/9. Q uotations for other sizes. trade terms and facilities. Early delivery. Trade only.— Immediate delivery all sizes. Carriage paid 500 and over, Morgan, Osborne & Co. Ltd., Southview Road, Warling- otherwise 4/2 per 100 extra. Samples 5/- each.— Box ham, Surrey. 110 9812. c/o The E le ctrica l R e v iew . » .C. Motors, l/75th h.p. to 5 h.p., all voltages. Also "C^LUORESCENT. from stock. 18". 24", 36", also 5 ft. A D.C.— The Johnson Engineering Co.. 319, Kennington L 80-watt Trough and Flush with Constead unit. Road. London. S .E .ll. Telephones. Reliance 1412/3. 57 Complete with tubes.—Box 9731, c/o The Electrical LT ERN A TIN G Sets,80 kVA. 400/3/50. enginedriven, Review . • A direct coupled; 2 cold start Diesels (1944) and 2 X^LUO RESC EN T Chokes, 80 watt. Low noise level, for semi-portable Petrol Sets, unused, all ex-Gov. surplus. L satisfied users; long life, for low replacement costs: Many others.— The Electroplant Co., Wembley, Middx. characteristics matched with lamp, for rated lamp life and 3427 light output. Prompt deliveries.—Micramatic Ltd., Meico R G E N T Solder. Q.380. in sticks.— B o x 3310, c/ o The Works, Congleton, Cheshire. 73 A Electrical Review. X^LUORESCENT Lighting. Constead Units for sale. A UD A X Ltd. now have available an extensive range of L Dispenses with all starter gear and gives instantaneous -¿X. new season’s designs of high-class L a m p Shades in lighting, prevents maintenance worries, each unit guaran­ Plastics and Parchment, together with a range of Table teed. Apply— Seemco Ltd., 6/7, Soho Street, London, W .l Lamps. Prompt delivery available to all parts of the (Tel. G E R . 2034). 117 country. Enquiries particularly invited from wholesalers T^LU ORE SCENT Lighting in several designs can be and electrical factors.—84, Preston Road, Brighton (Tel. -L supplied from stock to meet all requirements. Send Preston 5565). 9583 your enquiries to— John Phillips & Co. (Electrics). 31. . & W. Water Tube Boilers for disposal. Two 50.000 Fortune Green Road, N .W .6 (P a r k 8132). 3014 lbs. evaporation. 310 lbs. w .p .; tw o 50.000 lbs. B T^LUORESCENT Lighting. 18"-15w.. 24"-25w. and evaporation. 220 lbs. w.p.; four 30.000 lbs. evaporation, 260 lbs. w.p.; one 20.000 lbs. evaporation. 175 lbs. w .p.; L 36"-45w. fittings complete with tubes. Colours : White, warm white, daylight and pink. Delivery 7 days. one lbs. evaporation, lbs. w .p .; two 16,000 lbs. 12.000 200 We are pleased to state that we are now in a position to evaporation. 190 lbs. w.p.; one 9/10,000 lbs. evaporation, allow increased discounts outside the London area.— 200 lbs. w.p. We install complete including brickwork. Scemco Ltd., 6/7, Soho Street, London. W .l. Tel. GER. Economisers. Pumps. Piping. Valves. Generating Sets and 2034. 120 Motors in stock. Please send us your enquiries; we can give immediate delivery.— Burford, Taylor & Co. Ltd.. Ij^LUO RESCENT Lighting. Self-contained Ballast Units Boiler Specialists, Middlesbrough. Telephone, Middles­ X- by Hi-Craft. Complete with Glow Starter Switch brough 2622. 32 and Power Factor Condenser for 80-watt tubes. Supplied a lt. Bearings. 120 only of new unused with cage, from stock.— Scemco Ltd.. 6/7, Soho Street. London. W .l. B size %" o/d x 7/32" bore x 7/32" width, at 3s. 6d. Tel. G E R . 2034. 12 1 each. One lot.— Box 3353, c/o The Electrical Review. ■^LUORESCENT Lighting Fittings. Extensive range A TTERY Chargers for home and export. 4 models, XT available, complete units, factory and domestic types. B 2-6-12 v., 1 . 2 or 4 amp. D.C., any mains voltage. — Engineering Sales & Export Ltd.. Abford House, Wilton Generous trade terms. Write for catalogue.— The Banner Road, S.W .l. 3399 Electric Co. Ltd., Hoddesdon, Herts. Tel.: Hoddesdon “■FLUORESCENT Lighting Fittings. Extensive range, 2659 07 X- including Trough and Flush type, fitted with “ All in .T .H . Cap. Motors, 230 v ., 1.425 r.p.m ., 1/5, i . One ” “ Constead Unit.” Delivery 7 days, with tubes. B * h.p. Offers.— B o x 9838, c/o The Ele ctrica l Write—Scemco Ltd., 6/7, Soho Street. London. W 1 Re view . Phone. G E R . 2034. ' 1(^ November 8, 1946 E l e c t r ic a l R e v ie w 75

o 1iS,are: D>e louuwiiiollowing ______Motors: 220/230_ _. v. D.C.. E T R O L Electric Generating Sets, from 120 w to 1.5 kW. I 4« n " r „ h P- Delco. 1.750 r.p.m . ; 1 1/6 h.p. Century. P new designs, good deliveries. — A rthur Ly o n & Co. t 'i i r, ,ni' • 1 1/8 h.p. Singer Sewing Machine type: (Engs.) Ltd., Africa House. Kingsway, W.C.2. 70 h.p r w , . ® ,:r.so_n' 1.750 r.p.m .: 400/440 y . D .O.. 1 11 HO N E 98 Staines. 90-kW Ruston Diesel Set, 110 vo. D260 r.p.m .T'ilO V. D C.. 1 1 h.p. T..D.C./ P D.C.; 25-kW Mirrlees ditto. 110 vo.: 7/9-kW Ruston minor n’dnp 400 v - 3-phase. 50 cycles. 1 i h.p. Electro- ditto. 110 vo.; 5-kVA Ruston ditto. 400/1/50; Weir Feed i T m I n 00 r D m- S.C.; 1 to 1 h.p. Brook. 3.000/720 Pum p, 8£" x 6" x 13".—Harry H. Gardam & Co. Ltd.. v io iT ' i 7/; 400 v -. single-phase, 50 cycle. 2 h.p. Metro- Staines. 60 Vick.. 1.455 r.p.m ., S .C .: 230 v.. single-phase. 50 cycle, I3 LA T IN G Generators, unused, several ranging from 350 -a P i L kD, C - 1-440 r.n.m .. S .C .; 230 v.. 3-phase. to 700 amps., 6 to 12 volt, plain or with A.C. or ' o0 cyc“ -; 2 h.p. c. & P .. 2.900 r.p.m .. S .C .; 6-volt, 100- D.C. motor drive. Particulars from—Stewart Thomson gating Generator, self excited.—Hywood Ltd.. (Liverpool) Ltd.. Fort Road. Seaforth. Liverpool. 21 5 ^ C-£’xT§?.g;v.,18* Coram Street. W .C .l. 3088 (Bootle 2697); or 28, Victoria Street, Loridou. S.W .l EN ER A lO R s. three Tilling Stevens Generators. 100 (A bbey 2101). , ¿3 , vu~^-. Cohen & Sons. Dynascrap Works, London T>.V.C. Flex and Bell Wire, coloured and transparent. ltoad. Barking. Essex. Phone. Rippleway. 3715. 3388 -1- single, twin, triple and four core. Large variety, GEO RG E Cohen, Sons-& Co. Ltd. for guaranteed Elec­ from 6s. 9d. per 100 yards. Send 6d. for samples and trical Plant. Motors. Generators, Switchgear, etc.— lists. Also in stock. Fires, Irons, Extension Speakers. Wood Lane, London. W.12 (Telephone. Shepherds Bush Plugs. Sockets, Cable. Radio Accumulators and Car 2070) and Stanningley. near Leeds (Telephone, Pudsey Batteries, etc.— Northern Industries, 199, Broughton Lane. 2241). Established 1834. 27 Salford. 7. 3424 T N D U C T IO N Motors. 230 volt. 1-phase capacitor and E B U IL T Motors and Generators. Long deliveries can -1- shaded pole, flange mounting, suitable hairdryers, fans, R often be avoided by purchasing rebuilt secondhand etc.. with impellers up to 12" dia. Quotations large or plant. We can redesign or replace surplus plant of any small quantities.— Alleyne Foster (Engineering) Ltd.. size. Send us your enquiries. O ver 1.000 ratings actually Ottways Avenue. Ashtead. Surrey. 9777 in stock here.—Dynamo & Motor Repairs Ltd.. Wembley TNSTALLATION Tester. 500 v. Record Minor, £1 1 . Park. Middlesex (Telephone, W em bley 3121, 4 lines); also A From stock.— Ro b ins Electrics, 222 & 222b, W est End at Phcenix Works, Belgrave Terrace, Soho Road. Hands- Lane. N . W . 6. 83 worth. Birm ingham (Telephone, Northern 0898). 26 UNCTION Electric Irons, superior design and quality, .M.R. Electric Fires. 1 kW and 2 kW, reflectors, J supplied with suitable stand. Also Junction Nickel- R Radiant heaters 300 w.. Attracta 2-kW portable plated Torch Cases. Supplied for home trade and export. reflector fires, Reelek 1-kW reflector fires and a multitude Distributors— Brooks & Bohm Ltd.. 90. Victoria Street. of others now in stock. Good deliveries. Generous trade London. S .W . l. Tel. V ic. 9550. 49 discounts. Write for list.—Brooks & Bohm Ltd.. 90, A D D ERS, single and extension, from— Ramsay & Sons Victoria Street. S .W .l. Phone. Vic. 1441/9550. 3412 L (Forfar) Ltd.. Forfar. 9004 OTARY Converters in stock, all sizes; enquiries T ARG E number of Plating and Anodising Generators R invited. — Universal Electrical, 221, City Road. up to 1.200 amps., for the most part unused. Send London. E.C.l. 16 requirements to— Fyfe. Wilson & Co. Ltd. Bishop’s Stort- O TARY Converters, 200-kW, 6,600/3/50 input, 230 ford. Tel. Bishop’s Stortford 1000/1. 3404 R volts, 2-wire D.C. output, complete with Trans­ ARGE range of toasters, fans, portable and wall former and switchgear. seen running in Liverpool. 2.000- L electric fires, radiators, convector heaters, floor kW, 6.600/3/50 input. 418/462 volts, three-wire D.C. standard and table lamps, electric irons (heat controlled output, complete with transformers, starting panels, D.C. and others), vacuum cleaners, hair dryers, novelty bowl machine panels. First-class condition. Two sets avail­ fires, boiling rings, electric kettles, immersion heaters. able.—Stewart Thomson & Sons (Liverpool) Ltd.. Fort (Radios very shortly available.) Large range of torch Road, Seaforth, Liverpool, 21 (Bootle 2697); or 28. Vic­ cases, cycle lamps and all types of lighting and H .T . toria Street. London, S .W .l (Abbey 2101). 72 batteries, etc. Detailed list and catalogues available. ACKS and Bags in excellent condition for all com­ Place your orders in good time.— Brooks & Bohm Ltd.. S modities. as low as 4d. each. W rite — Jo h n Braydon 90, Victoria Street, London, S.W .l. Phone, Victoria Ltd ., 230, Tottenham Court Road, W .l. Tel. No. 9550/1441. Inland Telegrams, “ Beebats, Sowest. Museum 6972. 79 London.” 66 E S L IE Dixon & Co. for Dynamos, Motors, Switchgear. E L E N IU M Metal Rectifiers for A.C. to D.C. conversion. L Chargers and Telephones.— 214, Queenstown Road. S Many sizes in stock, also Transformers. Meters and Battersea. S.W . 8. Telephone, M A C aulay 2159. Nearest Sliding Resistances for low voltage D.C. supplies. Send for list.—S. G. Lewis F, Portland Court, New Brighton. Rly. Sta. : Queen’s Road, Battersea (S.R.). 18 Cheshire. 9825 Goodman (Radio) Ltd.. 9. Percy Street, Tottenham L• Court Road. W .l, are sole London agents for the S IN G L E Flexible Co-Axial Cable (to Government speci- “ Midco ” Elongated Fluorescent Choke and Fluorescent fication Uniradio 1), consisting of 1/.056 copper Starter Switches. Museum 0216. 76 inner conductor, solid polythene insulation, braided tinned 1\/| O T O R Generator Sets and Convertors, all sizes and copper outer conductor, sheathed in P.V.C., .45" 0/d.— voltages from £ kW up to 500 kW in stock.- Box 3396, c/o The Electrical Review . Britannia Manufacturing Co. Ltd., 22/26, Britannia Walk. P IR A L Elements for electric fires, boiling rings, and City Road. Ldndon, N .I. Telephone, Clerkenwell 5512. S other appliances, supplied to order.— Electrothermal 5513 & 5514. 28 Engineering Ltd., 270. Neville Road. London. E.7. 54 XTAM EPLATES, Engraving, Diesinking. Stencils, Steel P I R A L S , first quality, 500, 600, 750 and 1.000 watt, Punches.—Stilwell & Sons Ltd., 152, Far Gosford S all voltages, for immediate delivery.— Box 59, c/o Street. Coventry. 14 The Electrical Review. EW or Secondhand A.C./D.C. Motors can be supplied O T A FF Time Checking and Job Costing Time Recorders N from stock or at short notice. Specialists in rewinds (all makes) for quick cash sale. Exceptional con­ and repairs. Send your requirements to— John Phillips & Co. dition. Write — Box 528, Smiths, 100, 'Fleet Street, (Electrics),31. Fortune Green R d .N .W .6 (P a rk 8132). 3015 London. E.C.4. 31 'V T E W Motors. 2. 3 and 5 h.p., 400 v .. 3-phase, 50 cycles. TEAM Generating Plant. The following is a selection Also Secondhand Motors, 4 and 5 h.p. 400 v.. 3- S of sets available in our comprehensive stock : 2,000-kW phase, 50 cycles, 3.000 r.p.m .— B o x 3376. c/o The E le c ­ B .T.H .Turbo-A lternator, 6.600/3/50.180/210-lbs. pressure, trical Review. complete with suiiace condenser and all auxiliaries, seen X T E W Porthole Fans. 12" and 18" sizes. Motorised running. 1,250-kW Brush Ljungstrom Turbo-Alternator. l l either 400/3/50 or 230/1/50. Ex-stock.—A. 400/3/50. 200 lbs. pressure, complete with surface conden­ Cooksley & Co. Ltd.. 21/25, Tabernacle Street. E.C.2. ser and all auxiliaries, seen running. 750-kW Adamson/ E r n e Nos. Monarch 3357/8. 3416 Mather & Platt High-pressure Pass-out Turbo-Generator. XTTSSEN Type Huts. 24 x 16 . £52: 36' X 16'. £72. 200-lbs. initial steam pressure, passing out 25,000 lbs. per -W Plasterboard Huts, 31' x 19', £80. Secondhand. hour at 80-lbs. pressure, 500 volts, three-wire D .C.. with Wanv other sizes; also other types of buildings now in balancer, complete with surface condenser and all auxili­ 3o?l? some with floors. Immediate dispatch arranged aries. First-class condition. Full particulars from— lirpnces required. Inspection welcomed, or write Stewart Thomson & Sons (Liverpool) Ltd.. Fort Road. t — 1!c+ from—u. Thorn -mum &06 ouiia Sons L td .. doxB o x cju. 80. isramp- Bramp- Seaforth, Liverpool. 21 (Tele. No. Bootle 2697): or 28. for full j R p v le y heath. Kent. Phone. Bexleyheath 305. 47 Victoria Street, Westminster, London. S.W .l (Tele. No. - vrnT? Radio Heart equals complete first-class 5-valve Abbey 2101). 98 0 S iuo p e rh rinpt et. positively only small condensers and resist- Q U R PLU S Stores. New and used Ironclad Switch and ’ Super-efflcient components. Building in- ^ Fuse Gear, up to 100 amp. capacity. Appointment ances to üna. ^ ______3 to nn g. 16g> Cabinets. Trade invited.—Morgan to inspect in writing to—The Engineer, Metropolitan structions. gouthview R d .. U p p er W arlingham 2560. Osborne Ltd.. 1Q1 Police Electrical Stores Department. 1. Flint Street. Walworth. S.E.17. 3205 Surrey. 16 E l e c t r ic a l R e v ie w Novem ber 8, 1946

Q U PER IO R Type Builders' Ladders now in production; 100 yds. coils 19/064 unused V .I.R . Cable, not braided ^ also Steps, Trestles and Extension Ladders. Phone— but extra rubber sheathed, suitable tube or outdoor Shaftesbury Ladder’s Ltd., 453, Katherine Road, E.7. work, sample sent. £8 per 100 yds. -GB, 44, Broxholm Grangewood 3363/4. 15 R d .f London, S.E.2 7. »853 r p H R E E Plating Generators, 1,100 amp.. 6 volt, coupled i V k W and 2£-kW. 230/250-volt. D .C. Generating Sets. to D.C. motors, with switchgear and ammeters. complete with 4-cylinder. 10-h.p. Austin Engines, Generators by Canning, switchgear by Allen West.— with petrol tanks, radiators, fans and switchboards. Large Scottish Electromill Ltd., 51, Lanark St., Glasgow. 9843 number available.— Britannia Manufacturing Co. Ltd.. 22/26, Britannia Walk, London. N.I. 103 ^TRANSFO RM ERS, new. 110 A.C. intake. 220/230 A.C. Ellison 500-v. oil-immersed, triple-pole C ircuit Break er output, working 100 watt, suitable fluorescent. 8 Panels with isolation switch and ammeter up to 15 Q uantity available, 200 a t 22s. each.— H am ilto n & Co., amp. On stand complete.—Scottish Electromill Ltd., ol. 108, Shaftesbury Avenue, W . l (G errard 8491). 3378 La n ark Street, Glasgow. »844 W O D .C. Generating Sets, comprising 9-h.p. Lister 1 rV^wts. " Clear Space ” Massey Pneumatic Hammer, T Diesel enfeines, 1,000 r.p.m ., direct-coupled to E .E .C . J- w stroke 27", capacity M.S. Bar 10", M.D. 400/3/50; 5-kW, 220-v. D.C. generators, in excellent condition; ditto Guided type, clear between slides 12i", 400/3/50. one D.C. Generating Set, comprising Petter S type —Thos. W. Ward Ltd.. Brettenham House. Lancaster 18/21-h.p.. cartridge-starting oil engine, direct-coupled to Place. Strand. W .C .2 . Tel. Temple B a r 9631. 3391 V e rity ’s 13£-kW, 230-v. D .C . generator; brand new set of 5-kVA Diesel-driven Alternator Set. consisting of Tungstone batteries, 57 cells, for 230 v., 75 amp. hour; 27-:Lister 4-cylinder Diesel Engine and direct-coupled one Lighting Set, comprising 3-h.p. Lister Diesel engine, to 27.5-kVA. 3-phase, 50-cycles, 400-volt Alternator, direct-coupled to l£-kW, 110-v. D.C. generator; complete complete with switchboard and automatic voltage regulator set of Pritchett & Gold size 5 batteries, 52 cells; one (two sets available).— Newman Industries Limited, Yate, B .T .H . 90-kW, 510-v. D .C. Generator, 250 r .p .m .; one Bristol. 3415 Electrical Co. 4-kW, 230-v. D .C . Generator, 1,400 r.p.m .; -h.p., 400/3/50, Vertical Mounting Slip-ring Motor one 5-h.p. Ellis & Ward, 415/3/50, drip-proof Electric 75-' by Parkinson, 975 r.p.m., complete with auto­ Motor, 1,485 r.p.m., with slide rails and Star Delta starter; matic starter.—Selwood, Wide Lane, Southampton. one 30-h.p., 400-v., single-phase B .T .H . Ele ctric Motor, Phene, Southam pton 75238. 3422 975 r.p.m., with capacitor starter and condenser; one O C /T-kW Rotary Converters (2), with transformers and 50-h.p., B .T .H ., 500-v. D .C. Motor, 960/1,100 r.p.m .; switchgear, input 6,600 volts. 3-phase, 50 cycles, one li- h .p ., 230-v., single-phase, geared Commutator output 420/210 volts; also A.C. and D.C. Motors, Switch­ Motor, 1,450 r.p.m., ball bearings, double reduction gear gear, Generating Sets. Welders, etc.— Midland Counties to 341 and 132 r.p.m .; one 1/10-h.p., Em erson. 220-v. Electrical Engineering Co. Ltd.. Grice Street. Spon Lane, D.C. Motor, 900 r.p.m., compound wound.—Selwood, W est Brom w ich. 36 W id e Lane, Southam pton. Phone, Southam pton 75238. ¿f_/Y/VkVA oil-cooled Transformer, 6,600 v. primary, 3321 7*v4\_/ secondary 100, 90, 80, 60 and 50. Three truck- N USED D.C. Motors. Fifteen 21 h.p., 220 volt; six type Switch Cubicles. Infra-Red Mould Drying Units.— U 21 h.p., 105 volt, and many others.— Fyfe, Wilson S. C. B ilsb y, Crosswells Ro ad , Langley, N r. B ’ham. 3192 & Co. L td ., Bisho p ’s Stortford. 3405 Electric Motors. Dynamos, Transformers, Con- ACUUM Cleaner Parts. Hoses, braided, all diameters. O w v / verters, etc., etc., at low prices.— S. C. Bilsby, V Commutators, bearings, fans, carbon brushes, driving A.M.I.C.E., A.M .I.E.E.. Crosswells Road, Langley, near belts, brushes, attachments and fittings for all makes. Birm ingham . Phone. Broadw ell 1359. 21 Wholesale only.— Vacuum Cleaner Supplies, 543, Moseley /TiT/T oz. (Troy) Johnson Mattheys Easy Flow Road. Birm ingham , 12. 80 2 Silver Solder, in perfect condition arid as ACUUM Cleaner Spares and Accessories. Bags, bear­ supplied by the maker. Price for quick sale, 40s. lb. V ings, belts, brushes, fans, switches, etc. Repairs, (Troy).—W. D. M., 16, St. Thomas’ Road, St. Annes- rewinding, rebristling. Send for price list.—Reliance on-Sea. 3336 Vacuum Cleaner Service, 152-154, Broadway, Bexley- /T/T/Y good strong Crates, inside measurements 29" heath, Kent. 93 5 » " " v / x 9£" x 9f", £" thick, battened all round, E E Meggers, Evershed, 500 v., 20 meg., in carrying a t Is . 9d. each, ex works.— K . Goldser & Sons, 14a, R e c ­ W case, £12 5s. 6d., ex stock (new).—Robins Electric. tory Square, London, E .l (Tel. Stepney Green 2550). 75 222, W est E n d Lane. N . W . . 82 6 ARTICLES WANTED E E Megger, 500 v., and Weston Lightmeter, new; .C./D.C. Motors wanted urgently, all sizes and voltages. W offers.— Hewitson, Southview, Straight Road, Old W indsor, Berks. 9862 A Best prices offered.— John Phillips & Co. (Electrics), 31. Fo rtu n e Green Ro ad , N . W .6 (P a rk .8132). 3016 EL D IN G Controllers or Current Regulators by E.M .B. A .C. Motors, all sizes. Burnt-out machines acceptable W Co. and Quasi Arc Ltd. Sheet steel housing, screen providing mechanically sound.— Fyfe, Wilson & Co. protected, with built-in control panel and heavy knife L td ., Bisho p ’s Stortford. — 3406 switches, ranging from 10-200 amps, at from 80-110 volts .C. Motors urgently wanted, any condition, 400/3/50 A.C. or D.C., 80% ratings, sectionalised resistance con­ A type, sizes from 1 to 20 h.p., speeds 1,500 and 1,000. struction. These units- are in new condition and can be State price. — Bowie Electrical Service, Roscoe Street, supplied with the following accessories if required : Elec­ Scarborough (Tel. 1264). 2881 trode holder; 15 ft. electrode cable; 15 ft. main cable; A C ET A T E and other thermoplastic scrkp; polythene one operator’s screen; one pair leather gauntlets. They and P.V.C. in any form; also scrap cable and in­ are also suitable for conversion to heavy industrial re­ sulated wire; urgently wanted.—Elton Levy & Co. Ltd.. sistances. Ispection can be made at any of the following 18. St. Thomas Street, S.E.l. 30 branches, who would be pleased to forward illustrations LL materials for Lampshade Manufacture.—E. H. on request.—Cox & Danks Ltd., Plant & Machinery Dept. Rayner, 22, Gilliatt Street, Scunthorpe. Lincs. 9861 London: Faggs Road, Feltham, Middx. (Phone, Feltham A UTT and Spot Welders, all sizes.— Fyfe, Wilson & Co. 3471). B irm in g h a m : Langley Green. O ldbury (Phone, B Ltd . Bisho p ’s Stortford. 3408 Broadwell 2011). Manchester: Frederick Road, Salford, 6 /C ELLU LO SE Acetate Offcuts urgently wanted. Send (Phone. Pendleton 2481). 3352 ^ samples and prices to— Box 107, c/o The Electrical T IT ELD in g Sets, two mobile petrol-driven Welding Sets, Review . ’ ’ 100 v., 300 amp.— S. Cohen & Sons, Dynascrap NAM ELLED Copper Wire, 45 s.w.g. and 29 s.w.g., Works, London Road, Barking, Essex. Phone, Rippleway E urgently required. Particulars of any surplus 3715. 3387 enamelled or cotton-covered wire to— Service Electric Co. JL-h.p., 2 3 0 -v ., A.C. or D.C., 6,000-r.p.m.. B.B., S.P. Ltd., Alperton, Middx. 3315 4 Motors, new at five pounds fifteen shillings each, N G IN EERIN G Technical Books (new or secondhand) delivered.— B o x 9860, c / o T h e Ele ctrica l R eview . E wanted in any quantity. Attractive cash offers. Call British Westinghouse D.C. Motor, 7.5 h.p., shunt —Third floor, 356, Oxford Street, W .l, or " Stoneleigh,” 1 wound. 440 volts, 900 r.p.m., sleeve bearing, with St. George's Avenue, Weybridge. 62 starter; 1 Veritys D.C. Motor, 7.5 h.p., crane rated. 900 IR E Bar Elements (Flat). 9" x 3", 1 kilo.; also 5 to r.p.m ., 440 volts, 14.5 am p .; 1 Cam pbell & Isherwood F 15-amp. Switches. La rg e or small quantities. Offers D.C. Motor, shunt, 10 h.p., 1,100 r.p.m., 440 volts; to—Supreme Electrical Manufacturers, 3, Downs Road. 1 Campbell & Isherwood, 15 h.p., D.C., shunt, 750 r.p.m.. Epsom. Surrey (Phone, Epsom 1358). 9712 440 volts, w ith starter; 1 £ A .C ., single-phase, 250, LUORESCENT Lamps, 5 ft., urgently required, any 1,425-r.p.m. Capacitor.— B o x 3370, c/o The Ele ctrica l F quantity, retail prices paid. Collected London area R eview . — Box 111. c/oThe Electrical Review. 8-h.p., 500-volt D.C. variable speed, 400/1,600 r.p.m.. LUORESCENT Tubes, 5 ft., wanted urgently.— John 1 £35; and 1 14-h.p. Bro o k Motor. 400 volt, 1-phase, F Phillips & Co. Electrics, 31. Fortune Green Road 970 r.p.m .. £55.— A. E . Regan, 14-15, C raw ley Mews. West Hampstead. Phone. Hampstead 8132. Evening. Eversholt Street, N.W.l. 3341 Ham pstead 7245. 3262 N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 77

Motors. l/50th to 1/100th h.p. Small IRM INGHAM Electrical Rewinds Co., 38, Brighton W in o h frf, 1v.able to supply 1.000 oft for early delivery.— B R d .. Birm ingham (Tel. South 0143), specialists in Phone 1... .J-ntdneering. 294-6. Lillie Road. Fulham, S.W . 6. the rewinds and repair of fract. h.p. motors. All types. 15 days’ delivery. 6 months’ guarantee. Reasonable x r i o i c « h-im 3081' j \ _ Wlvches. Regular substantial supplies urgently3417 prices. 9837 /'CAPACITY available for light assembly. December, ParadeFui ~ G'N' (Elect' Mnfg J Co' Ltd- 28’ Avm95 January. Some machining, London area.—Box 91. LA M IN A T IO N S. types 75A.4A., required in substantial c/o The Electrical Review. /^IQIL Winding undertaken to your own specification. /«.«» i S S i i ies- Sm all quantities also considered.— Corner- ^ Fluorescent chokes wound.— Box 9845. c/o The it /i-iririr 00nie R°ad- Macclesfield. 95 Electrical Review. Jy l ERC URY (Quicksilver) wanted. Write for packing . instructions. Gold. Silver and Platinum also pur­ LECTRICAL and Mechanical Drawings and Tracings chased. Collingridge & Co. Ltd.. Riverside Works. River­ prepared. Illustrations for technical publications a side Ro ad . W atford (Tel. 5963). 20 speciality.— Ashley Drawing Office Ltd.. 4. Totnes Villas. Telford Road. London. N.ll. 9821 "JV/TOTOR-driven Sinking Pum p. 300 galls, per minute T^NGINEERS, Precision, South England, seek mauu 7" ,caPacity. max. head 1,400 ft. Flameproof motors facture of electrical, mechanical or domestic and electrical gear, electric supply 500 volts. 3-phase, assemblies or components. Press tools, gauges, small 50 cycles, or 3.300 volts. 3-phase. 50 cycles. Complete stampings, capstan turning, also Internal and External installations required with cables, winches, pipes, etc.— Grinding. Write— Box 74, c/o The Electrical Review. Box 3203. c/o The Electrical Review . T S a bottle-neck holding up production in the machining REQ UIRED: Mica Electric Iron Elements; Toaster RE department? Six inch lathe available in Sheffield, also Elements; Spirals, nichrome wire; Cotton-covered light assembly work if required.—Box 9863, c/o The Flexes: Brass, Copper and Steel Sheets, min. size 9" x 6" ; Electrical Review. Alu. Strip, g" x i"; Machinery, new and used; Timber; Glazing; Rubber Grommets; Asbestos; Switches; Iron T AM PSH AD E Wires, any design, from own drawings or Connectors, etc.. etc. Offers to—British Diamix Ltd.. - u samples. Enquiries invited.— Regent Wares. 57a, Metrum Works. Beatty Street. N.W .l. Euston 5951. 44 Queen’s Road. Walthamstow, London, E.17. 9711 S W I T C H B O A R D wanted for 12-h.p. D .C. Generator. TV/TACHINING Work, for Centre Lathes up to 64 in. ^ State price.— Burton. Holly House. Astley. Salop. iT1- centres and medium-sized milling (good grade work 9841 preferred).—The London Electric Firm, Croydon. Up­ lands 4871. 56 T T R G EN T LY wanted, for priority export work, all sizes U of Enamelled Copper Wire, especially 40 and 48; "VTANUFACTURER of Porcelain Elements wanted. also Laminations. 28A and other types. Offers to— J. P. able to execute an order of 10,000 pieces. Sample Short, 4. O akhill Road. S .W . 15. P U T n e y 0873. 9800 can be supplied.—The British Bright Light Co. Ltd.. 266-286. Battersea Park Road. S.W . 1 1 . 3195 \\^ANTED, D.C. and A.C. ball-bearing Motors. Full * * details to— Britannia Manufacturing Co. Ltd., 22/26, Q HOT Blasting, Metal and Paint Spraying. We are able Britannia Walk. London. N.I. 29 ^ to undertake the efflicient and prompt handling of all goods sent for treatment. Large capacity available. Y\^ANTED for export. Electric Fans. Boiling Rings. Enquiries to—Commercial Structures Ltd.. Staffa Works, »* Kettles. Toasters and all kinds of electric wire, Staffa Road, E.10. 112 switches, lamp-holders and fittings. Also small plastic E plate in Silver. Cadmium, or Nickel. Send large or lamp shades. — Quilliam Products. 22. High Street. Kingston-on-Thames. 3348 W small quantities to— Stainless Electro Platers, Back 473, Waterloo Rd.. Blackpool. 9835 "lATANTED. Rotary Converters, any size.—Universal. 221, C ity Ro ad , London, E . C . l. 22 AGENCIES -h.p.. 230-v. A .C. or D .C . M otor.— Universal Electrical, A D V ER T ISER , long associated with electrical trade in 1 221. C ity Ro ad . London. E .C .l. 25 Australia, desires agency lines or rights for manu­ inch to 14 inch Steel Chain, suitable for electrical facturing processes and designs. Reply first instance to— I fittings.— B o x 9857, c/o The Ele ctrica l Review . Box 9848, c/o The Electrical Review . 1,-kW fully-automatic Diesel Generating Set, preferably A G EN C IES required for London, South of England, for 2 2 a Lister.— B o x 3258, c/o The Ele ctrica l R eview . the following: ( 1 ) Domestic electrical appliances; and 15-amp. Single-pole Skeleton K ic k Switches.— (2) Brass electrical accessories, switch plugs, etc.; (3) Con­ 5 Rowe Bros. & Co. Ltd.. Pall Mall. Liverpool. 3. 3312 duit. Advertisers have clientele with every wholesaler in or 8 level P.O. pattern 25 contact Rotary Line Switches. the territory mentioned. Immediate turnover can be —S. G. Lewis. F, Portland Court. New Brighton. 9826 guaranteed. Either commission or buying basis. Post­ 5 war arrangements considered.—Box 64, c/o The Elec­ dozen 11" Secondhand Green Enamelled Benjamin trical Review. 6 Coolican Shades.— John J. Dewhurst, The Mill, Dud- dington, Stamford. 3333 G EN C IES required. South of England, including the A London area: (a) Cables; (b) Small Switchgear; (c) .1-h.p. Squirrel Cage Motors, foot or flange mounted, Transformers; or any lines suitable for distribution for 72 3-ph.. 50 cycles, 960/1.440 r.p.m ., 220/380 and/or wholesalers’ business.— Box 40. c/o The Electrical Review . 400/440 volts, in good condition.— T.M.A., Leatherhead G E N T , with first-class Scottish connection, wishes Road. South Chessington, Surbiton. Surrey (Tel. Epsom A representation.— B o x 9836, c/o The Electrical 2634). 3361 Review . O P s.w.g. Nickel-Chrome-Iron (65/15/20) Resistance E N T L E M A N , w ith office in London and knowledge of W ire. State q uantity and price.— B o x 9866, c/o G electrical engineering, would undertake representa­ The Electrical Review. tion of firms.— Box 9840, c/o The Electrical Review. 1 Rotary Convertor. Output 220 volts direct MPORTANT branch of leading British manufacturers - L O U current. Incom ing supply 3.300 volts. 3-phase, I opening new showrooms and offices in Buenos Aires 50 cycles. Two sets making above capacity would be on 1st March. 1947. would consider additional agencies considered or. alternatively. Motor Generator Sets. Write for allied lines. Communicate—Box 3398, c/o The Elec­ full details and price to—Box No. 877, Mason-Peacock trical Review. Ltd ., 184, Strand. W ,C .2 . 3328 ONDON company experienced in successful distribu­ Q rr/V k W Alternator. 400/440 volts. Particulars to— L tion of electrical products through wholesale trade ¿ D U Box 3343. c/o The Electrical Review. seeks sole representation for V.I.R. and P.V.C. Flexes O C / V k W Generator, 220 vo lt D .C.. 600 r.p.m .— Fyfe. and Cables, Brass and Bakelite Accessories. Would con­ ^ O U Wilson & Co. Ltd. Bishop’s Stortford. 3407 sider Continental if import possible.—Box 81, c/o The 4 r\/"v-volt. 3-phase M otor required. 200 h.p. or larger. Electrical Review. tfc U U 580 r.P-m. or less.— Smith Brothers Ltd.. Ayle- 1\/rANUFACrURERS’ Agents, covering the whole of stone P a rk . Leicester. 3222 -Lt-L Great Britain and Colonies, are desirous of contact­ ing manufacturers with a view to sole selling rights (either WORK WANTED a n d o r r & R E D commission or buying), post-war arrangements considered. t t tytoItps and kinds of Electrical and Radio Measuring — Box 23. c/o The Electrical Review. A t ^friiriients repaired by skilled technicians. A.I.D. ANUFACTURING and Distributing Company, cover­ j All work quoted by return without charge, M ing the British Isles, and having important export approved. large variety of Voltmeters. Ammeters. connections, arc desirous of handling additional products Also for • o" an(j 24" dials, reconditioned ex-Air suitable for the electrical, hardware and ironmongery Milli-annneie •> ^ Gertler, Dept. A. 29-31. Cowcross St.. trades, preferably sole distributing lights. Substantial Ministi;?,Vi Cle. (5783). 9670 contracts will be placed for suitable lines. Reply— Box R .» h’ttrE Winding: Vacuum Cleaners, etc.. single or T.P.195. c/o Maurice Vernon Ltd.. 2. St. Andrew’s Hill. A ^^ltntities.— Vac. 80, Cranbrook Road. Hf< 9612 Queen Victoria Street. E.C.4. 61 7 8 E l e c t r ic a l R e v ie w N o ve m b e r 8, 1946

IV/TANUFACTURERS’ Agents, with offices London and T is desired to secure the full commercial development South Coast, wish to hear of additional lines, includ­ I in the United Kingdom of British Patents Nos. 470386 ing Cables and Domestic Appliances, for sale to corpora­ and 511953, which relate to Ind uction H e atin g Apparatus, tions, wholesalers and retailers.— Box 9676, c/o The Elec­ either by way of the grant of licences or otherwise on trical Review. terms acceptable to the patentee. Interested parties "V TERR IBU LL Black Heaters are being extensively desiring copies of the patent specifications and further advertised in the national Press. We need area particulars should apply to— Stevens, Langner, Parry & distributors. Write for booklet and details of areas avail­ Rollinson, 5 to 9, Q u ality Court, London. W .C .2 . 3362 able.—J. F. Merison & Co., Ruislip, Middx. 3347 T is desired to secure the full commercial development e p resen ta tive, covering south of England in I in the U nited K ing d om of B ritis h P a te n t N o. 538364. R own car. visiting elec. shops and ironmongers, is which relates to Quenching Method and Apparatus, either open for additional lines.—Box 9846, c/o The Electrical by way of the grant of licences or otherwise on terms R e v iew. acceptable to the patentee. Interested parties desiring C O U TH Africa. Representative, 18 years’ experience copies of the patent specifications should apply to— ^ wholesale electrical accessories and domestic ap­ Stevens. Langner. Parry & Rollinson, 5 to 9, Quality pliances trade, desires contact firm requiring representa­ Court, London, W .C .2 . 3363 tion in S.A. Excellent ref. Passage booked.— Box 9787, c/o The Electrical Review. T is desired to secure the full commercial development I in the U n ited K in gdom of B ritish P a te n t N o . 554849, BUSINESSES FOR SALE AND WANTED which relates to Illuminating or Signalling Devices, either LEC T R IC Supply Shop, complete with most extensive by way of the grant of licences or otherwise on terms E stock. Wide clientele of 25 yrs. standing. Living acceptable to the patentee. Interested parties desinng accommodation consists of 2 bed., 2 rec., kit., etc. Battery copies of the patent specifications should apply to— charging plant and garage facilities. Owner retiring Stevens, Langner, Parry & Rollinson, 5 to 9, Quality through ill health asks £5,500 for fhld., including goodwill. Court, London, W .C .2 . 3365 —Gascoigne-Pees, Charter House, Surbiton. Elmbridge T is desired to secure the full commercial development 4141. 9850 in the U n ited K in gdom of B ritis h Pate n ts Nos. 547579 ADIO Sales and Service and Electrical Sales and I and 555902. which relate to E le ctrica l Ind ucing Coils and R Service Business. Established 20 years. West Induction Heating Apparatus, either by way of the grant Wales coastal resort. Select agencies. Stock and fixtures of licences or otherwise on terms acceptable to the at valuation approx. £750. Attractive double-fronted patentee. Interested parties desiring copies of the patent lock-up shop, showroom and workroom on lease with specifications and further particulars should apply to— option to purchase. Nominal goodwill value. Splendid Stevens. Langner, Parry & Rollinson, 5 to 9, Quality opportunity for practical man. Electrical service man Court. London. W .C .2 . 3364 retainable if desired.—Box 9852, c/o The Electrical R e v iew . T is desired to secure the full commercial development I in the U n ited Kingdom of B ritish P a te n t N o. 555638. BUSINESS OPPORTUNITIES which relates to Circuit Controlling Apparatus and Tele­ LUORESCENT Starter. Inventor of new thermal phone Systems including such Apparatus, either by way F device (non-bi-metallic). with better starting and of the grant of licences or otherwise on terms acceptable resetting than usual type, wishes to contact control gear to the patentee. Interested parties desiring copies of manufacturer to promote commercial development of the the patent specifications should apply to— Stevens, Lang­ switch.— B o x 9867, c/o The Ele ctrica l R e view . ner. Parry & Rollinson, 5 to 9, Quality Court, London. OCEM CO Ltd., Fluorescent Lighting Specialists, wish to W .C .2 . 3367 ^ contact manufacturers of electrical equipment and accessories, including " Novelty ” and “ Improved ” T is desired to secure the full commercial development appliances. Domestic fluorescent fittings and components I in the U n ited King d om of B ritis h P a te n t N o . 554953. of particular interest. When possible complete output will which relates to Electrical Systems for Transforming D.C. be taken, and full co-operation given in exchange for sole into A.C., either by way of the grant of licences or other­ distribution rights. Replies will be treated with strictest wise on terms acceptable to the patentee. Interested confidence.—Man. Director, Scemco Ltd., Scemco House, parties desiring copies of the patent specifications should 6/7, Soho Street, London, W.l. 119 apply to—Stevens. Langner. Parry & Rollinson, 5 to 9. Quality Court. London, W.C.2. 3366 PATENT NOTICES T is desired to secure the full commercial development ATEN T Agents.— A. E. Hill. Chartered Patent Agent, I in the U nited Kingdom of B ritish Patents Nos. 556092 P 27. Chancery Lane, London, W.C.2. Tele. Chancery and 556161, w hich relate to Ele ctrica l System s for Con­ 8444. 65 verting Direct Current into Alternating Current, either by way of the grant of licences or otherwise on terms accept­ BUSINESS PREMISES able to the patentee. Interested parties desiring copies T^ACTORY Extensions, Warehouses, Canteens, etc.. of the patent specifications and further particulars should erected complete. Plans and licence applications apply to—Stevens. Langner, Parry & Rollinson, 5 to 9. prepared. Consult— The Universal Housing Co. Ltd.. Quality Court, London. W.C.2. 3368 Rickmansworth. 109

Not to the same extent as in the good old days of course, but supplies are im proving. CLOCKS

Products of TELEPHONE MANUFACTURING CO.. LTD. ij0 Marketed by T.M.C.-HARWELL (SALES) LTD., 233, SHAFTESBURY AVENUE, LONDON, W .C.2. Telephone : T EM tie Bar 0055. The CURRENT way of t e U i a # t h e T I M E N ovem ber 8, 1946 E l e c t r ic a l R ev ie w 79

T V R PAR TNERSHIPS XT wholesale house, main road lease, needs pxT)an c/o The Ele ctrica l R eview . Y P rivate limited company, situated in Nth. elepfriiii 11 aud engaged in manufacture of domestic aPPliances and general engineering, wishes to *aniL re(iuires a new director, qualified to take control of office, who is prepared to invest £2.000. Salary to be agreed.— Box 3317. c/o The Ele ctrica l Review . MISCELLANEOUS "D A T T E R Y Chargers Modernised. Your old Charger made like new by specialists. Conversion from valve to metal rectification. Send for interesting leaflet “ Q.D.” on this service.— Runbaken Electrical Products. Manchester. 1. 45 T X IR E plant to solve your delivery problems. We have COILS set up a Special Hire Dept, where customers can obtain at moderate rates Motors. Generators, Engines, etc., to satisfy their immediate needs. Please send your enquiries, stating approx. hire period, to—^G. P. U. Ltd. DETERMINE (Hire Department). Wembley. Middx. Phone: Wembley 3691; 'Grams: Powaguide, London. Maintenance and PERFORMANCE service stations at W’embley. Huddersfield, Leicester and near W rexham . 3425 HORTHAND Typists. Private Secretaries, Clerks, etc. ★ ACCURACY S If you are in urgent need of staff, contact Embassy Secretarial Employment Bureau. Excel House. Whitcomb UNIFORMITY Street. W.C.2 (Whitehall. 5924). We specialise in efficient ★ personnel. 90 \ \ f ORLD Export: Air or Sea Freight Charges. Write ★ RELIABILITY »»or phone— Dept. D l. Polish Steamship Agency Ltd.. 6. Carlisle S t.. London. W . l (Gerr. 9441-5). 3331 ★ SERVICE O R K SH IR E Business Agencies specialise in' advice Y regarding the sale and purch. of businesses. Skilled ★ COMPETITIVE PRICES in investigation on behalf of purchasers, and can give sellers the benefit of expert opinion on the value of their business. All prospective buyers and sellers will find an TheVarlem Magnet Company interview with us to their advantage.— Yorkshire Business PROPRIETORS Agencies, Business Consultants. 15. East Parade. Leeds. 1. 3217 OLIVER P E II CONTROL LIP EDUCATIONAL NOTICES 'Jeiephone:- WOOLWICH 1422 NGINEERING Careers and Qualifications. Both E Government and industry have announced and CAMBRIDGE ROW WOOLWICH S E 18 emphasised that young men with technical knowledge and qualifications must receive every chance of rising to the highest posts within their capacity in post-war engineering and allied industry. Write to-day for “ The Engineer’s Guide to Success ” — 200 courses— free— which gives particulars of the first-class training supplied by the T.I.G.B. for the A-.M.I.E.E.. A.M.Inst.C.E., A.M.I.Mech.E.. A.F.R.Ae.S.. A.M.I.P.E.. B.Sc.(Eng.). C. & G.. etc.. examinations in which T.I.G.B. home-study students have gained 44 first places and over 1.000 passes. The Guide covers careers in all branches. Electrical. Mechanical, Radio, Aeronautical, etc.— The Technological Institute of Great Britain, 35, Temple Bar House, London, E.C.4. 77 ATEST A.M .I.E.E. Results. In the recent examina L tions held by the Institution of Electrical Engineers 477 candidates sat who had taken B.I.E.T. courses. Of these 457 were successful in passing the examinations. W e believe this record of 457 successes out of 477 entrants has never before been approached by any oral or correspondence tutorial organisation, and indicates the very high efficiency of the modern system of technical training which we have laid down. The B.I.E.T . tutorial organisation is waiting to assist you either with a short specialist course or com­ plete training for a recognised examination. We have available a large full-time staff of instructors, while the efficiency of our extensive organisation is a byword among engineers. W e guarantee— “ N o pass— no fee.” M ay we send a copy of “ Engineering Opportunities ” ? Containing a great deal of useful advice and detailed information on over 200 home-study courses and examinations, this hand­ book is of very real value to the ambitious engineer. Our highly informative handbook will be sent free and without obligation on request.— British Institute of Engineering Technology (established 1927— over 200.000 students). LITHOLITE INSULATORS & 12 Shakespeare House 17. 18 & 19. Stratford Place. Oxford Street. London. W.l. 33 T A^TTCS offers particularly good prospects to ST. A LB A N S M O U LD IN G S LTD P experienced Engineers with a sound knowledge of !Technology- A uth oritative home-study courses Plastics Tec ! jQ Qenerai piast1Cs and specialised are now aT£ ” science. F u ll details of these courses and branches oi ^ the rapidly-expanding plastics industry WATFORD the 0ur handbook ” Opportunities in Plastics.” w ill be fo u n a ues^ — British Institute of Plastics Tech- 'PHONE : WATFORD 4494 sent free on ^ 17> gtratf0rd Place, London. W .l. nology (Dep^- 3318 8 0 E l e c t r ic a l R e v ie w N o ve m b er 8, 1946

A COMBINATION OF RELAYS FORETHOUGHT IN DESIGN

an d EXCELLENCE OF MANUFACTURE

SPEC IA L RELAYS S T A N D A R D RELAYS

TIME DELAY RELAYS LIMIT SWITCHES MERCURY SWITCH CONTACTORS LABOR TORY APPARATUS

^ / ’c o n t r o l e q u i p m e n t t o CUSTOMERS’ REQUIREMENTS

TOOLMAKERS & DESIGN Brays Lane (C O V .) L T D . COVENTRY Telephone 4051-2 Send to-day for full details, trade terms, etc. of Invite Enquiries for the ‘ easy-to-sell’ C L A N G range which includes:- JIGS, TOOLS, FIXTURES & MOULDS ADAPTORS • APPLIANCE CONNECTORS FOR THE ELECTRICAL INDUSTRY CEILING FITTINGS • JUNCTION BOXES AND THE PLASTICS TRADE PLUGS • ETC. Highest Accuracy and Finish Guaranteed

Trade Mark A U T O M A T IC ELECTRICAL FITTINGS VOLTAGE, A.C. FEEDER SPEED AND OTHER Made In England by REGULATORS CLANG LTD . CROWN YARD CRICKLEWOOD . LONDON . N.W.2 COX=WALKERS LTD.

Phone: , *Sra,T?: . , COXPAR DARLINGTON Gladstone 4201 (4 lines) Clangllm, Crickle, London. N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 81

A S T O N ” obom COPPER RODS The rods are perfectly round, straight and true to size; they are guaranteed high conductivity copper and are suitable for all Electrical applications such as the manu­ facture of switchgear, electrical machinery, bus-bars and earthing rods. Copper rods in standard sizes are in stock, and non-standard sizes can be supplied in very short delivery times. Rectangular copper conductors with similar qualities are also available from stock. ASTON CHAIN AND HOOK CO. LTD.

Bromford Lane, Erdinglon, Birmingham, 2 4 Phone: ERDington 2235-6-7 Grams: Chainwork, Erdington

For Electric Lighting and Power, WEATHERPROOF Transmission, METAL - CLAD Communication, S.P., D.P. & T.P. SWITCHES C I. Switch Portable Tools, etc. SWITCH SOCKETS N D PLUGS

Current Price List cancelled. \'e:c List available.

Interlocked Switch Socket with Cover and 3- or 4 pole Plug

Manufactured by SIMMONDS ft STOKES LTD. V IC T Q N I * HOUSE, SOUTHAMPTON HOW. LONDON, W.C.I HOLBORN U 1 7 82 E l e c t r ic a l R e v ie w N o ve m b er 8, 1946 A Vest Pocket CABLE STRIPPER Pat. N o . 571461 Now fitted with Robust Cutter for all types of BRAIDED, P.V.C., COPPER SCREENED, POLYTHENE, LEAD AND STANNOS Specialists In the moulding of Poly­ CABLES styrene, Polythene and Cellulose Diameters up to 7/044 v.i.r. equivalent ; Acetate as applied to the Electrical no damage to Copper Cores Industry. W e shall be very pleased to forward Lateral or Transverse Cutting any information requested. Adjustable Depth of Cut, Clean and Accurate INJECTIO N For Production Lines, Electricians, MOULDERS Wiremen and Cable Operatives (Bureau I )

Write for Brochure : Westmoreland Road, London, N.W.9 CABLE STRIPPERS LTD. Telephone : COLindale 8868/9 LEIGHTON HOUSE, POTTERS BAR. MIDDX.

G.G.C. DEVELOPMENT CO. “ BRITAIN CAN INDUSTRIAL ELECTRONIC ENGINEERS Designers of Process and Delay Timing MAKE ST” Apparatus, Precision Measurement of Time Intervals, Electronic Relays and Photocell Units, Machine Tool Control by W E’VE BEEN Electrical and Electronic means. MAKING IT All enquiries to sole Manufacturers and Distributors:— W. H. SANDERS WE ARE Bedwell Lane, Stevenage, Herts MAKING IT Phone: Stevenage 517/8/9 WE SHALL MAKE IT pat . -p MANUFACTURING, First Grade MECHANICAL AND PLASTIC ELECTRICAL ENGINEERS PLUGS NO CABLE CLAMPS OR S C R E W S I0YCE ENGINEERING LTD. EXTRA SAFE EARTH THE QUADRANT, N.W.4 SELF-ALIGNING PINS H ENDO N 7437-8-9 November 8, 1946 E l e c t r ic a l R e v ie w 83

‘WELVIC’ pvc compositions

‘CORVIC’ polyvinyl chloride

‘ALKATHENE’ polythene

for electrical applications

imperial chemical industries limited LONDON - S.W.I

P.227 8 4 E l e c t r ic a l R e v ie w Novem ber 8, 1946

MANUFACTURERS of “ BROW LECO ” Electric Soldering Irons (60-500 W) COMMUTATORS MAGNETIC SPECIAL and SLIPRINGS SEPARATORS SWITCHGEAR BROWNING’S ELECTRIC CO. LTD. Boleyn Castle, Green Street, Upton Park, London, E.I3 Telephone : GRANGEWOOD 4004/5 ESTABLISHED 1919 also REPAIRS and REWINDINGS of a l l classes of Electrical Plant FRACTIONAL BREAKDOWN and MAINTENANCE WELL-EQUIPPED TO 1500 H.P. SERVICE SITE REPAIRS MACHINE SHOP

A.C. or D.C. UNIVERSAL FRACTIONAL H.P. MOTORS for every purpose Delivery of urgent priority orders as follows :— 1/15 0th—1/3Oth h.p. 6-- 7 w e e k s 1 /20th—1/8th h.p. 7-- 8 w e e k s 6-250 volts FRACTIONAL These approved and certified Conduits and Fittings are consistently reliable under the most arduous conditions H.P. MOTORS of service. You can specify none better. Ltd.. Rookery Way HI L DICK & HILDICK WALSALL TUBE WORKS PLECK ROAD.WALSALL . WAH°.2f23, London Stores: 9 Howland Mews West. Howland St.. W.l. Phone: Mnseum 6225

‘Phone: Molesey 556.'

MILD STEEL GABLE HANGERS AND RACKS. KNIGHTON LANE, BUCKHURST HILL ESSEX. ROBERT McGREGOR & Co., ELECTRIC HEATING APPLIANCES ALPINE STEEL WORKS, EAST MOLESEY. SURREY. “ T H E R M O N E T S ” for INDUSTRIAL HEATING November 8, 1946 E l e c t r ic a l R e v ie w 85

« « i t s

Safe progress

where , his whiskers can go—the cat also can go. It’s a way ol safeguarding him against rash adventures. The rich endowment of experience in the

Crompton Parkinson organization is a similar safeguard against ill-timed and dubious experiments—an assurance that every advance is proved beyond doubt before it is incorporated in new plant. That is why Crompton Parkinson plant has earned the respect of engineers everywhere—it is always progressive along the right lines.

( rompton^Parkinson* i ■ LIMITED PLANT DIVISION a B u s i#d ■ * „ , . « 11«. irucrs E L E C T R A HOUSE. VICTORIA EMBANKMENT LONDON. W.C . 2 86 E l e c t r ic a l R e v ie w Novem ber 8, 1946

Solve your lifting problems by installing a M O R G A N Patent Electric Hoist. Less effort, less space, less cost. Phone or write for full particulars

. W IRES, TAPES & RODS H O I S T

r BLOCKS W SMtcm tXFURNACES :;- MORGANp*Tt*T SO .W ILK IN ST.N.W .S.* PHON E : GUL.II47

EX A ÇT .TO S.P ECIFI CAT IO N — LET US QUOTE YOU— DUBOIS PLUS ACTIVATED m /N C

SOLDER VACTITE G.P.O. and AIR MINISTRY APPROVED • NOW AVAILABLE IN 60/40 ALLOY • ORDER NOW ANO BE SURE OF YOUR SUPPLIES • SPECIAL TERMS FOR WAVERLEY WORKS, WHOLESALERS 75 ST. SIMON STREET, Supplied on Mb.. 4 lb., 7 lb.. 10 lb. SALFORD 3, LANCS. Telephone: BLACKFRIARS 9831 The DU BOIS CO. Ltd. Telegrams : VACTITIC, SALFORD IS, 8RITANNIA STREET • KING’S CROSS ■ W.C.1. f«/«ph»n« i lermlnaj 6624/5 fe/egromj i B’ertrao, Lin cross, London November 8, 1946 E l e c t r ic a l R e v ie w 87

Made by Ellison craftsmen in one of the World’s great switch- gear factories, Ellison starters are controlling the electrically driven pumps in breweries, factories and water works throughout the country. Their sound design and robust construction ensure many years of unfailing service.

G e o r g e E l l i s o n LIMITED

BIRMINGHAM 2 2 B E N G L A N D

E t E l e c t r ic a l R e v ie w N o ve m b er 8, I V4t)

100 k.V A. Air Cooled Power Transformer

râ FOSTER TRANSFORMERS &SWITCHCEAR lid K (INCORPORATING FOSTER ENGINEERING COMPANY) SOUTH WIMBLEDON. LONDON, S.W 19

Associated Companies : Lancashire Dynamo & Crypto, Ltd. Crypto Ltd. Crypton Equipment, Ltd. November 8, 1946 E l e c t r ic a l R e v ie w 89

THE SAM E M ACHINE — TW O DIFFERENT JOBS/

SUC t ® \ # » » o

THE IDEAL MACHINE FOR OFFICE, SHOWROOMS and ALL INDUSTRIAL and COM­ MERCIAL PREMISES. Designed and made by a firm who have specialized for years O N LY in floor maintenance equip­ ment, it performs its dual task of vacuum cleaning and polishing better than com­ petitive machines designed forone purpose only. Thus you get the initial saving plus the advantage of permanently better results. To convert from a polisher to a vacuum cleaner is only a matter of seconds.

THE COLUMBUS FLOOR POLISH SPRAYER (Illustrated on left) Automatically liquefies and sprays polish over large areas of floors in an incredibly short time. Used in conjunction with the Columbus suction polisher it gives floors of which you can be justly proud. Full particulars of all above from the manufacturers ROLLNICK & GORDON LTD Capitol W orks, Empire W ay, Wembley, Middlesex Telephone : W EM BLEY 4139 Showrooms : 80-82 Regent Street (Quadrant Arcade) London, W .l Telephone : REGENT 5771-2

NOW YOU CAN HAVE PROMPT DEL! VERT 0F ME!CÛ FLUORESCENT FITTINGS

Illustrated above is a typical example of a MEICO Trough Fitting. Other designs and types are available. Full details, specifications, and prices on request. MEICO FLUORESCENT LIGHTING

MEICO WORKS ' CONGLETON • CHESHIRE - Tel. : C0NGLET0N 607, 571, 572 90 E l e c t r ic a l " R e v ie w Novem ber 8, 1946 Announcing “Ashlam ASHDOWNS’ NEW INSULATION MATERIAL

To meet Electrical Industry “ ASHLAM" — RESIN BONDED PAPER BOARDS:— needs, Ashdowns Ltd. have Grade P W .. to meet B.S.S. 1137 Type 1 and B.S.S. 547 where low moisture absorption is required, produced “ A S H L A M ” — Grade P E .. to meet B.S.S. 1137 Type 3 and B.S.S. 316 registered trade mark — for where higher electrical strength is required. sheet materials classified by “ ASHLAM” - ■RESIN BONDED COTTON CLOTHBOARDS: — the B.S.I. as “ Synthetic Grade FF to meet B.S.S. 972 Type A, and B.S.S. 668 Resin Bonded Materials Grade FM .. to meet B.S.S. 972 Tvpe B. and B.S.S. 668 Grade FC .. to meet B.S.S. 972 Type C, and B.S.S. 668 “ ASHLAM” is manufac­ where high mechanical strength is required, and tured in a variety of grades. especially for machining gears, pinions, etc.

FOR FURTHER INFORMATION —

A s h d o w n s

Ashdowns Limited, Eccleston Works, St. Helens, Lancs. Tel: St. Helens 3206

THE ERG’S HAVE THE URGE TO GO ABROAD CLIFTON BREAKFAST COOKER SELECTED BY THE COUNCIL O F INDUSTRIAL DESIGN F O R T H E ‘BRITAIN CAN MAKE IT’ ERG Resistors have EXHIBITION an exceptional elec­ trical specification and perform ance, w ith mechanical strength. High Grade Vitreous Enamels used on all our Tropical Resistors give long life, and definitely assist in the trouble-free manufac­ ture and performance of Radio Receivers, Television and Test Equipment. Processed to the highest Service Standards at a com petitive price. ERG INDUSTRIAL C O R P O R A T IO N Ltd. ERG Sales O ffice : 10 Portman Square. London, W .l Phone : W E L b e c k 8114/5 CLIFTON AIRCRAFT LTD. 2959 LYTHAM . LANCASHIRE N o vem b er 8, 1946 E l e c t r ic a l R e v ie w 91

10 to 1,000 watts.

1,000, 750, 500, 200, 100, 50, 25, 10 watt. (All models can be supplied ganged) (OX TOROIDAL POTENTIOMETERS CERAMIC INSULATION ONLY — AND APPROVED FOR TRO PICAL CONDITIONS (K.110). COMPLETE CERAMIC RINGS FOR STRENGTH. APPROVED BY ALL GOVERNMENT DEPARTMENTS EXCELLENT DELIVERY ALL TYPES OF TOROIDAL WINDINGS

Telephone p )( FOX LTD.

HORSFORTH • • YORKSHIRE

"POWER

The technicalities of modern power problems require not only a fund of detailed knowledge and experience but a continuous study of industrial economics .... Thereby, the purchase, installation, and consequent running of plant may be planned and carried through as one complete scheme, eliminating wastage of time, man-power and money. Backed by resources, research and experience, ' Electro Dynamic ’ experts are adept at solving the power problems of others ; suggesting ways and means best applied to existing conditions and ensuring that economy is dovetailed with the maximum industrial efficiency. Whatever your problems, whether on installation or modification, we can assist you. ELECTRO DYNAMIC CONSTRUCTION CO. LTD. OFFICES & WORKS: ST MARY CRAY, KENT & BRIDGWATER, SOM. 9 2 E l e c t r ic a l R e v ie w Novem ber 8, 1946

Rail Transport

Your local Goods Agent and Station Master are there to help you on all matters relating to transport by rail. They will be pleased to assist, so help the Railways to help you by keeping close contact with your local — GOODS AGENT for freight traffic S T A T IO N M A S T E R for passenger and parcels traffic

GWR • LMS • LNER • SR

Members of E.W.F. & R.W .F.

STOCKISTS OF e .l .m .a. lam ps C.M.A. CABLES B.V.A. VALVES a n d a l l r a d i o a n d e l e c t r i c a l S U P P L IE S

PROMPTEST FACTORS

At present in production are two types of fluorescent chokes, types “ U ” and “ S ” for use w ith 80 w att lamps. Typ e “ U ” is 3J*x3J*x4i* and is for external use o r with industrial type troughs. Type " S ’* is 2 * X ¥ x 8 * and is Intended for incorporation in very shallow troughs—as < GREAT BRITAIN > small as 2" deep. n o r Type " U ” has an external tapping block giving tappings ROAD, STRATFORD, of l90/260v. Type “ S ” is at present made for one voltage W A R T O N E.I5 only. Both chokes are made of first class materials, (MARyland 6611) vacuum impregnated and compound filled. They are AINTREE ROAD, PERIVALE completely silent in operation, and conform with the (PERivale 3300) usual high standard of W O D EN Workmanship. Branches ; Chester, Sheffield, Leicester, Cambridge, Further details gladly sent on request. Ipswich, Oxford, Croydon, Canterbury, Brighton, and Northern Factors Ltd., Crescent Rd., Middlesbrough WODEN TRANSFORMER COMPANY, LTD. MOXLEY ROAD, BILSTON. STAFFS. Tel : Bilston 41959 N ovem ber 8, 1946 E l e c t r ic a l R e v ie w {Supplement) 93

r

Selecting the correct equipment for the job is the most important factor in secur­ ing efficient and trouble free ventilation. Airspin Fans are designed by Ventilating Engineers and are available in a range of sizes to meet a wide variety of require­ ments. Full details are given in our new list. Send for your copy now. CtihSfiU1 V E NTILATING FANS

1 I K A l T C F k 52 CLERKENWELL CLOSE IF.H. B ID D L E LI m il LU LONDON E.C.I

TEL: CLERKENWELL 6345 TELEGRAMS : EFB/DDLE SMITH LONDON

THE ^ tyotc Cast, $ £ £ APPELBE u / J u / f f o y ¿ c ¿ e B U LB FIX ER NO LADDERS REQUIRED Telescopic appliance for fixing and removing electric bulbs. SAVES Any reasonable height can be reached. TIME ELECTRODE BOILERS Made of Aluminium and can be carried with ease on any cycle. LABOUR MONEY STANDARD MODEL for 60 to 200 watt lamps at 16' 6' from ground. 6' 0' closed. 12' 0' ex­ tended. Weight 3 lb. Cycle clips and Extension Tubing supplied.

“ A ” MODEL 30 K .W . Boiler supplying steam for three pressing machines. for 200 to 500 watt lamps E. S; Caps at 20' 0' from ground. 7' 0' Electrode boiler3 are the cleanest and most con­ closed. 1 6 '6 'extended. W eight venient sources of heat available. They need no 5^ lb. Cycle clips and Extension Tubing supplied. boiler house, no chimney, no fuel store. There is no difficulty with fuel supplies and where Used by the leading corporations and electric supply companies have favourable rates, “ B. 4 A . " light companies throughout the World. boilers show great over-all economy. Prices and particulars on request. FOR STEAM SUPPLY Carriage paid in Great Britain. FOR HEATING & HOT WATER (6) _ J. F. APPELBE & CO. LTD. r T T & A U E N LTD.. I t BEDFORD SOUflRE. W.C.1 GREAT UNION STREET, HULL BAST i A 52 Robertson Street, Glasgow, C.2 Telephones : 33522, 31212 & 8725 Northtrn OW Telegraphic Address : "Appelbeco, Hull ” 9 4 (Supplem ent) E l e c t r ic a l R e v ie w Novem ber 8, 1946

WEIR CHARLES CLIFFORD PO R T A B LE P roducts INSTRUMENTS INCLUDE Ammeters and Volt­ BRASS, COPPER & PHOSPHOR BRONZE meters. Moving-iron or and the undernoted SPECIALITIES Moving-coil. Single, dual \T u b e S Copper Tubes for all purposes. Brass Tubes in various alloys and specifications. Aluminium Brass Con­ or triple range. denser Tubes Al-dur-braPhosphor Bronze Tubes, solid-drawn. Gun Metal Tubes, solid-drazcn. AVAILABLE FOR EARLY Sheet ÓL S trip Brass and Copper Sheet and Strip to any specification and in suitable temper for requirements. DELIVERY Phosphor Bronze Sheets and Strip.

4in. SQUARE PATTERN. Flush or Projecting, C a s tin g s Chill-cast Phosphor Bronze and Gun Metal Bars. BAKELITE CASES, Moving-iron or Moving-coil. R o d s Phosphor Bronze Rods (Drawn). Gun Aletal 3yin. FLUSH PATTERN. Moving-iron or Moving- Rods (Drazcn). Zinc Battery Rods. coil BAKELITE CASES. Wire All Wires for the Metallisation process of Metal THE Spraying. Zinc Wire. Phosphor Bronze Wire. WEIR ELECTRICAL I n g O t S Phosphor Copper. Phosphor Tin.

INSTRUMENT CO. LTD. CHARLES CLIFFORD & SON LTD BRADFORD-ON-AVON, WILTS. WORKS AT: FAZELEY STREET MILLS, Telephone: Bradford-on-Avon 2378 BIRMINGHAM 5 (HEAD OFFICE) & DOG POOL MILLS, BIRMINGHAM 30

450 C. is a '•—Ä.SÄ

W tftr y ï*

H e is the man who has to use the tools you r e s i s t o r s provide and he knows their merits. There is a Flextol machine for every job, — Filing, Grinding, Scurfing, Polishing, Flexible Disc Thanks to special quality Grinding, Screw Driving, Nut Setting, etc enamel, Welwyn Vitreous Send for Catalogue No. F 22. Resistors can operate con­ tinuously at 450° C, moFe than twice the safe tem­ perature for ordinary vitreous resistors. Sizes : lw to 300w. High Stability POWER-DRIVEN HAND-- TOOLS ifga T’Odt Mori Carbon Resistors-Jw to2w. New Trade Catalogue ready. Alore Power to your elbow * WELWYN ELECTRICAL LABORATORIES LTD. Sole Manufacturers and Patentees : WELWYN GARDEN CITY, F L E X T O L E N G I N E E R I N G CO. LTD HERTS. THE GREEN» EALING, LONDON, W. S Ph o n e : W e i. G a r . 3816-8 "Phones : EALing 6444/5,'6. "Grams : “ Dominating " , Ealux. London.

® 95-13^ N o vem b er 8, 1946 Electrical Review (S u p p le m e n t) 9 5

* • • far all vlvvl rival Installation*

Head Office : 39 Victoria Street, London, S.W.I. Tel. : ABBey 8080 (18 lines)

Branches : Manchester, Bournemouth, Glasgow, Birmingham, Hull, Southampton, Hereford, Sheffield, Thetford, York, Bristol, Edinburgh, Aberdeen

DRUMS- REELS L.T.P. FOR TRANSFORMERS CHOKES, MERCURY ARC RECTIFIERS We have generations of experience in woodworking; up to the minute machinery for every Part °f the job, and a properly Write for latest Technical Brochure organised production line for every part of the job. Small wonder then, that many to of the largest Cable makers in the country come to us for their drums. LONDON TRANSFORMER PRODUCTS LTD. THE AUSTIN-HALL GROUP OF COMPANIES COBBOLD ESTATE, WILLESDEN AUSTINS or EAST HAM LONDON, N.W.IO LIMITED Wil 6486 LONDON, E.6. GRAngewood 3444 9 6 (Supplem ent) E l e c t r ic a l R e v ie w November 8, 1946

PRECISION BUILT ROTARY SELECTOR SWITCHES Series MRL and HD Series MRL are designed for low power control circuits and provide for up to 50 contacts, and can be ganged when required. Series H D operate at currents up to 200 amps, and voltages of several thousands, APPLICABLE TO ANY SYSTEM OF BUILDING according to type. Octopus ensures Both Series can be supplied with or without 1. Speedier and more efficient installation. click detents. 2. Considerable economy in labour & installation costs. Octopus has been officially approved by governing Some Models ex stock authorities. Write for illustrated brochure to Designed and built by PROVED AND PRODUCING PROPERTIES LIMITED, 5, Cheapside, London, E.C.2, or HARTLEY & COMPANY, 57, Victoria St., London, S.W .I. WATFORD INSTRUMENTS Sole Agents for Northern Ireland : JAMES McCREEDY, LTD., LOATES LANE, WATFORD, HERTS Private Road, Cregagh, Belfast. Telephone : W atford 3944

FLUORESCENT STARTER SWITCHES “RADIANT (Thermal Type). Individually tested ELECTRIC EARLY DELIVERY Also BEMO 80 watt chokes, condensers, etc. BED WARMERS Supplies now available FLUORESCENT SPARES A p p ly to your local Wholesaler WHOLESALERS’ ENQUIRIES SHOULD BE HADE TO— Dept. ER/A, 53 Goodge St., London, W .l SOUND, 483-489 Barlow Moor Rd, Manchester 21 nPhone : CHOrlton 2294i C /E R 3

Ml!!! III ¡IB M A L I jfied. Impregnated Insulating Material Outstanding for ST R E N G T H * TiNSl

Write for Data Booklet 24B, giving Electrical and Physical Properties and Mechanical t_ Characteristics of this extremely usefnl material =-==" to the NEW INSULATION CO. LTD. Gloucester (Eng.) Telephone 4941 N o v e m b e r 8, 1946 E l e c t r ic a l R e v ie w {Supplement) 9 7

PROTECT ELECTRIC CABLES AGAINST FIRE BY COVERING THEM WITH NEWALLS BRAND Regd. MOULDED ASBESTOS

Made in sheets and sections. It can also be supplied in almost any shape to form covers for cables and cable ducting. Its weight Is less than one quarter of ¿hat of concrete. Application is quick as cutting and mltreing are easy. Samples and copies of tests under B.S.I. conditions are available. NEWALLS INSULATION COMPANY LTD

HEAD OFFICE : WASHINGTON, CO. DURHAM. OFFICES & DEPOTS AT LONDON GLASGOW, MANCHESTER, NEWCASTLE UPON TYNE, BIRMINGHAM, BELFAST BRISTOL AND CARDIFF ffltFORATED METALS SOLUTION FOR ALL ELECTRICAL REQUIREMENTS OF THE CYCLE Perforated Lead for Batteries STORAGE PROBLEM CABLE-TRAYS a n d BENDS

FOR ELECTRICAL WIRING

W l/lT E fo r c a t a l o g u e I BARNSi SON ER/20I (Established I860) CLOBE WORKS, QUEENSLAND ROAD, ^.o i LOWAY, LONDON. N.7 Telephone: NO RTH 3347/8 ..PERFORATION, HOLWAY, LONDON” T.I.grams: " 9 8 (Supplement) E lectrical Review November 8, 1946 ATLAS PRODUCTION SPOT WELDER FOR IRON, STEEL, BRASS A N D C O P P E R

200-250 V O L T S A .C , Single-Phase

2 KVA "... and when you’re in the CAPACITY market, just con­ tact me. I can 2x.002" MIN. promise it will pay you.'’ 2x22 GAUGE MAX. Components and Assem­ blies in Drop Forgings. IN MILD STEEL Hot Brass Stampings. Cold Stampings and Press- This machine has been designed for the work. Springs and Wirework. repetition production of Small Components Special Tools & Wrenches. in the Lamp and Valve Industry and its use A uto, Capstan and General on small sheet metal articles of a semi­ Machine W ork. luxury nature such as Lamp Shades, Powder Bolts, Nuts, Screws, Compacts, Lighters, etc., where it eliminates Washers, etc. g a q g ą ę j S ł e » 1 brazing and soldering, has proved a source of considerable production increase. The machine is bench mounted and is complete with all electrical gear. Operation is by foot pedal. BEVERLEY WORKS, ALMA ST. BIRMINGHAM. 6. PRICE ON APPLICATION. EARLY DELIVERY ASTßN ÇK OSS . !5i>7 ? ENGINES & ELECTRICS LTD. YOUR REQUIREMENTS TO .- BLUE-PRINT OR PATTERN 22-26 STAFFORD PLACE, LONDON, S.W.1 S . & U

ELM.A THREE SPECIAL LINES LAMPS. CABLES BELL CELLS, l+ v . AUTO and Retail and Round 6" X 2 |" 3/• FLASH FLEXES Red. 44" X I f " 9d, Red. 54" X 2" 1/- LAMP Govt. Surplus BULBS 244 TOTTENHAM COURT ROAD LONDON, W.l MUSeum 5351 Established 1919

WRITE FOR STEWART TRANSFORMERS LTD. CATALOGUE We E.R./110 manufacture H.T. & LIGHTING TRANSFORMERS & CHOKES FOR ALL PURPOSES UP AltASTKA TO 1-5 K.V.A. LOW CHOKES FOR FLUORESCENT TENSION POLES LIGHTING EQUIPMENT

1037 FINCHLEY ROAD, N.W.II Phone : Speedwell 3000 Nove,, i her 8, 1946 E l e c t r ic a l R ev ie w {Supplement) 99

A‘GEN’

-JOB

A ‘gen’ job, a genuine job, a gentleman’s job (W e ll, a real engineer Is always a gentleman), a job with a genealogy ; and there is also the geniality engendered by the use of HOFFMANN BEARINGS THE HOFFMANN MANUFACTURING CO. LTD., CHELMSFORD, ESSEX

A CHANGING WORL D --- \ O' , - c iiv 'O WHAT A HEADACHE!

1939 Powerful publicity and skilled representation were concentrated on “ Selling ” to you. 1946 A “ Sellers Market.” To-day the problem is no longer Selling but Buying. Buyer and Seller are handicapped by inadequate sup­ plies, quotas and restrictions that bar the way. SUNCO POLICY Is to distribute available stocks fairly among their clients—a square deal for all—even though the problem gives us many a sick headache.

THE SU N ELECTRICAL COMPANY LIMITED M 8-!20 CHARING CROSS ROAD, LONDON, W.C.2 Also at Leeds, Newcastle upon Tyne and Slough 1 0 0 {Supplement) E l e c t r ic a l R e v ie w Novem ber 8, 1946 Index to Advertisers PAGE Aberdare Cables Ltd ...... Cover i Appelbe, J. F., ,& Co. Ltd ...... 93 Arcolectric (Switches) Ltd ...... 114 ■ T H H Ashdowns Ltd . , . 90 Ashley Accessories Ltd ...... 28 Associated Pumps Ltd ...... 102 Aston Chain & Hook Co. Ltd ...... 81 SWITCHGEAR Astor Boisselier & Lawrence Ltd ...... 10 Austinlite Ltd ...... 106 Austins of East Ham Ltd ...... 95 Bakelite Ltd ...... 10 Barns, W ., & S o n ...... 97 Bastian & Allen Ltd ...... 93 Benjamin Electric Ltd ...... 23 Berry’s Electric Ltd ...... 39 & 58 Biddle, F. H., Ltd ...... 93 Bill Switchgear Ltd ...... 3 Birmingham Mica Co. Ltd ...... 108 Brentford Transformers Ltd ...... 113 Britannia Batteries Ltd ...... 14 British Electric Resistance Co. Ltd ...... 117 British General Manufacturing Co. (1941) Ltd 35 B ritish Insulated C alle n d e r’s Cables L t d ...... 9 B ritish K lo c k n e r Sw itchgear L t d ...... 120 British Railways ...... 92 British Thermostat Co. Ltd ...... 3 British Thomson-Houston Co. Ltd ...... 5 & 56 Brook Motors Ltd ...... 27 Browning’s Electric Co. Ltd ...... : ...... 84 Bullers Ltd ...... 61 SPECIALISTS IN FUSES. DISTRIBUTION B u rc o L t d ...... 8 BOARDS, SWITCH FUSES, SWITCH Cable Makers’ Association ...... 44 BOARDS, CONTROL PANELS. ETC. Cable Strippers Ltd ...... 82 Cambridge Instrument Co. Ltd ...... 58 Canning, W., & Co. Ltd ...... I l l Carter, H. W ., & James Ltd ...... 110 Churchouse, C. M., Ltd ...... 108 City Electrical Co ...... 102 (rP-Dennis L C lang L t d ...... 80 FLtMIING ISUAU .it'tK t, LlV tK K JO LI*. Hunts Cross 1217/8 Clifford, Charles, & Son Ltd ...... 94 LONDON OFFICE-ABFORD HOUSE, W ILTON RD.. S.W. I Clifton Aircraft Ltd ...... 90 Telephone : Victoria 5957/8 Collins Electrical Ltd ...... 115 Constructors Ltd ...... 97 ContactumLtd ...... 114 Cossor, A. C., Ltd ...... 116 Cox-Walkers Ltd ...... 80 C ressall M an u factu rin g C o . L t d ...... 34 Crompton Parkinson Ltd ...... 50 & 85 Cryselco Ltd ...... 2 Darwins Ltd ...... 22 D a v is & Timmins Ltd ...... 120 Dennis, G. P., Ltd...... 100 Designs & Installations Ltd ...... 101 D esoutter Bro s. L t d ...... 19 Donovan Electrical Co. Ltd 112 & 114 D.P. Battery Co. Ltd ...... 24 Du Bois Co. Ltd ...... 86 M A.P. Type Approved Dynamo «Sc Motor Repairs Ltd ...... 53 To specification D .C.D Edison Swan Electric Co. Ltd ...... 47 W .T . 1548 Elcordia Ltd ...... 24 Electric Construction Co. Ltd ...... 38 E L I M I N A T E Ele ctricity Services L t d ...... 112 VIBRATION AND Electro Dynamic Construction Co. Ltd ...... 91 Ellison, George, Ltd ...... 87 BANISH SHOCK Engines & Electrics Ltd ...... 98 "Equiflex’’ Mountings, English Electric Co. Ltd ...... 15 which proved so valu­ APPLICATIONS : There are Erg Industrial Corporation Ltd ...... 90 able in w ar w ork, have ranges of Standard Evans, Adlard & Co. Ltd ...... 108 now been released. “ Equiflex ” Mountings for Ferguson, Pailin Ltd ...... 49 suspension and mounting of FEATURES : Flexible in equipment, instruments, Ferranti Ltd ...... 11 all directions at an equal Flextol Engineering Co. Ltd ...... 94 electrical apparatus, motors, deflection. Can be Fluorescent Spares...... 96 etc., w here elim ination o f vi­ loaded on any side, thus bration and shock is required. Foster Transformers & Sw itchg ear L t d ...... 88 eliminating vibration in F o x , P . X ., L t d ...... 91 “ Equiflex ” Metal Mountings VERTICAL, HORI­ Fractional H.P. Motors Ltd ...... 84 operate on a new Dampdd Z O N T A L and L O N G I­ Spring System. Fry’s Metal Foundries Ltd ...... 16 T U D IN A L planes. F u lle r E le ctrica l & M an u factu rin g C o . L t d ...... 51 General Electric Co. Ltd ...... Cover iv, 18, 42 & 62 Constant performance. Rubber “ Equiflex ” types Gent & Co. Ltd ...... 6 Unaffected by tempera­ are now available giving Gordon & Gotch Ltd ...... 116 ture changes. similar characteristics . G re lco L t d ...... 110 Write for Brochure and send us details of your requirements Guest, Keen & N ettlefold s L t d ...... 30 Hackbridge Electric Construction Co. Ltd ...... 118 A . W E L L S & C O . L T D . Hampton Works (Stampings) Ltd ...... 32 Hart Accumulator Co. Ltd ...... 26 (Dept. F.), Stirling Road, Walthamstow, E.17 Heatrae Ltd ...... 1 Phone : Larkswood 2691 (Continued on page 102) November 8, 1946 •E l e c t r ic a l R e v ie w (Supplement) 101

SELF-PRIMING PUMP

Characteristics—Simple and Efficient Requires little power when priming or delivering. Will not stall when air enters the pump. W orks well on “ Snore” and primes when operating against a delivery head.

Pulsometer engineering CLÍ., H int Elms Ironworks. R eading

C o n t a c t o r T y p e S t a r t e r s Fo r A . C S e r v i c e

IG R A N IC ELE C T R IC C O LTD. SDecialise in the manufacture of Contactor Type Starters for all types of Electric Motors for all classes of Service. Equip your electrically driven machine with the correct control gear to protect your motor and machine by specifying IGRANIC.

Illustration shows type 1080 Combined Stator and Rotor Starter.

IGRANIC ELECTRIC C9UP BEDFORD 6 LONDON

DO YOU WANT HELP WITH YOUR DRAWING OFFICE WORK? D ESIG N and Development of Electrical and Mechanical Equipment, DRAWINGS and GENERAL DRAWING OFFICE WORK produced from r o u g h sketches, basic information, to your requirements. W id e experience of Manufacturers’ Drawing Office systems, special provision made to ensure close co-operation. You can get the assistance of an efficient D R A W IN G O FFICE by writing to or telephoning— DESIGNS & installations l t d . 163 HIGH STREET, GUILDFORD, SURREY. Telephone: Guildford 3919 1 0 2 (Supplement) E l e c t r ic a l R e v i e w Novem ber 8, 1946

Index to Advertisers {Continued from page 100) p age Heayberd, F. C., & Co. Ltd ...... 120 H edin L t d ...... 84 ASSOCIATED Hendrey Relays Ltd ...... 80 Henlev’s, W. T.. Telegraph Work* Co. I td. 17 Hildick & Hildick...... 84 Hoffmann Manufacturing Co. l td ...... 99 PUMPS Homeshade Co. Ltd ...... 119 LTD. H o o v e r L t d ...... 32 Hotpoint Electric Appliance Co. Ltd ...... 35 H o tric L t d ...... 55 ALL PURPOSES Igranic Electric Co. Ltd ...... 101 DOMESTIC & Imperial Chemical Industries Ltd ...... 83 INDUSTRIAL Injection Moulders Ltd ...... 82 Insular Electric Lamp Works Ltd ...... 28 Insulators Ltd ...... 36 Ismay, John, & Sons Ltd ...... 26 73-77 Britannia Rd. Jackson Electric Stove Co. Ltd ...... 21 Fulham Johnson, Matthey & Co. Ltd ...... 60 Johnson & Phillips Ltd ...... 33 LONDON. S.W .6 Jones, Samuel, & Co. Ltd ...... 34 Joyce Engineering Ltd ...... '. . 82 Kautex Plastics Ltd ...... 105 Kerry’s (Great Britain) Ltd ...... 92 Lancashire Dynamo & Crypto Ltd ...... 41 Lancomotors Ltd ...... 104 Legg (Industries) Ltd ...... 104 Linolite Ltd ...... 40 Litholite Insulators & St. Albans Mouldings Ltd 79 Lo nd ex L t d ...... 120 London Electric Firm ...... 8 London Transformer Products Ltd ...... 95 Macintyre, James, & Co. Ltd ...... 34 Martindale Electric Co. Ltd ...... 59 Maul & Murphy Ltd ...... 112 McGregor, Robert, 8c C o ...... 84 M. & C. Switchgear Ltd ...... f . . . 25 M.C.L. & Repetition Ltd ...... 1 M e k - EIe k Eng ineering L t d ...... 14 Mercury D.L. Co ...... 104 Metafiltration Co. Ltd ...... 106 Metallic Seamless Tube Co. Ltd ...... 20 Metropolitan-Vickers Electrical Co. Ltd ...... Cover ii EMERALD STREET, LONDON, W. C L TELEPHONE HOLBORN 9722. Metway Electrical Industries Ltd ...... 57 Micramatic Electrical Instrument Co. Ltd ...... 89 M id la n d Ele ctric M a n u fa c tu rin g C o . L t d ...... 29 ELECTRICAL REVIEWS ------Morgan, Albert, & Co ...... 86 National Savings Committee ...... 10 INSTRUCTION CHART Neill, James, & Co. (Sheffield) Ltd ...... 43 F O R DEALING WITH APPARENT New Insulation Co. Ltd ...... 96 Newalls Insulation Co. Ltd ...... 97 DEATH FROM ELECTRIC Parmiter, Hope & Sugden Ltd ...... 103 Perry Barr Metal Co. Ltd ...... 46 Philips Lamps Ltd ...... 45 SHOCK Pitm an , S ir Isaac, & Sons L t d ...... 32 In Bccordanc* with H.O. ELECTRICITY REGULATION 29 Po les L t d ...... 98 Premier Electric Heaters Ltd ...... 4 ELECTRICAL REVIEW SD^ ^ ‘ s?°sul.î Proved & Producing Properties Ltd ...... 96 Pulsometer Engineering Co. Ltd ...... 101 Pu ltra L t d ...... 22 PAGE Record Electrical Co. Ltd ...... 107 Thew, Edward H., Ltd ...... 120 Redfern Stevens Ltd ...... 98 Thompson, W . & J. R.. (Woodturners) Ltd ...... 26 Reyrolle, A., & Co. Ltd ...... r ...... 31 Tilling-Stevens Ltd ...... 28 Rheostatic Co. Ltd ...... 43 T .M .C .- H a rw e ll (Sa les) L t d ...... 78 Richardsons Westgarth-Brown Boveri Ltd ...... 30 Toolmakers & Design (Coventry) Ltd ...... 80 Robinson, Lionel, & Co. Ltd ...... 113 Trustful Products Ltd ...... 104 Rockman Engineering Co. Ltd ...... 112 Tucker, J. H., & Co. Ltd ...... 109 Rollnick & Gordon Ltd ...... 89 Tullis Russell & Co. Ltd ...... 12 Ross Courtney & Co. Ltd ...... 1 United Insulator Co. Ltd ...... 48 Ruberoid Co. Ltd ...... 26 Vactite W ire Co. Ltd ...... 86 Runbaken Electrical Products ...... 116 Vacuums Ltd ...... 105 Sanders, W . H ...... 82 Varley Magnet Co ...... 79 Savage Transformers Ltd ...... 46 Veritys Ltd ...... 59 Scophony Ltd ...... 110 Walker, W . G., & Co. (Engineers) Ltd ...... 104 Service Electric Co. Ltd ...... Cover iii Ward & Goldstone Ltd ...... 117 Siegrist (Orel) Ltd ...... 48 Wardle Engineering Co. Ltd Cover iii Siemens Electric Lamps & Supplies Ltd ...... 37 Watford Instruments...... 96 Simmonds & Stokes Ltd ...... 81 Webber, J. M., & Co. Ltd ...... 98 S o u n d ...... 96 Weekes, L., (Lutoji) Ltd ...... 110 Speed Tools Ltd ...... 106 W eir Electrical Instrument Co. Ltd ...... 94 Speedy & Eynon Ltd ...... 40 Wells, A., & Co. Ltd ...... 100 Standard Telephones & Cables Ltd ...... 52 Welwyn Electrical Laboratories Ltd ...... 94 Stanton & Co ...... Westminster Engineering Co. Ltd ...... 1 Stewart Transformers Ltd ...... Wheeler. F. H „ & Co. Ltd ...... 95 Sturtevant Engineering Co. Ltd Wiggin, Henry, & Co. Ltd ...... 114 Sun Electrical Co. Ltd ...... Wingrove & Rogers Ltd ...... 34 Tempered Spring Co. Ltd ...... Woden Transformer Co. Ltd ...... 92 Terry, Herbert, & Sons Ltd ...... Yorkshire Switchgear & Engineering Co. Ltd ...... 54 Thermolectrics Ltd ...... Zenith Electric Co. Ltd ...... 108 November 8, 1946 Electrical Review (S u p p le m e n t) 103

FUSEGEAR

Aeroflex fuses are particularly adapted to the protection of distribution circuits. The high tested breaking capacity ensures safety under severe overload conditions, and the time-lag element enables opera­ tional overloads, such as motor starting currents, to be passed without interrup­ tion or ageing.

The fuses are easily and cheaply rewired in the event of faults.

PARMITER, HOPE & SUGDEN LTD. Longsight, Manchester 12. London : 34 Victoria Street, S.W .I 1 0 4 (Supplement) E lectrical Review N o ve m b er 8, 1946

W. G. WALKER & CO. (ENGINEERS) LTD. FOR GUARANTEED ARMATURE RE-WINDS AND REPAIRS TO ALL KINDS OF ELECTRIC MOTORS

VERY PROMPT SERVICE Specification :— Polished Conal Metal sole plate; Steel clamping plate; Polished aluminium body ; Black Plastic PHONE: VICTORIA 1622 & 0709 handle; Rubber insulated contacts from iron; W eight approx 4 lbs.; 6-ft. 3-core flex; Individually cartoned ; 200-220 o r 230-250 volts— W . 450 w atts G. W ALKER TRUSTFUL PRODUCTS LTD. & CO. (ENGINEERS) LTD. 100 ST. M A R TIN ’S LANE, LONDON, W.C.2 EMERY HILL STREET Telephone: TEM PLE BAR 0691/2 S. African Agents: E. Donald & Co.. P.O . Box 3292, Cape Town WESTMINSTER, S.W.I ©E.R.6. f ' of LANCOMOTORS BATTERY CHARGERS LIMITED RECTIFYING EQUIPMENT TRANS F O R M E R S Manufacturing • Electrical • ( INDUJTRIEJI LTD. • Engineers . T — > 1 f WILLIAMfON XT, Specialists in the manufacture of COILS WOLVERH AMPTÖM 24(191 * Shunt, Series, Commutating, Brake, Armature, etc., etc. FLUORESCENT Electric Motors and Equipment made to Customers' Specification LIGHTING Chokes, Starter Switches and all necessary spares supplied to Trade from stock CLOUGH ST., HANLEY MERCURY D.L. CO. STOKEsONsTRENT 96a, Holloway Road, N.7. Tel.: North 1257 Sole distributors for TELEPHONE 237S-9 B.E.S. and Mejer Fluorescent Lighting and Spares N ovem ber 8, 1946 E l e c t r ic a l R e v ie w (Supplement) 105 NEO KTEX

ALSO SUITABLE FOR MOULDINGS ETC. KAUTEX PLASTICS l t d AVOID SU BSTITUTES ELSTREE WAY, ELSTREE, HERTS PHONE: ELSTREE 1777/8

• VACUUM CLEANER

• HANDIE CLEANER

• POLISHETTE

0 is a combination, light and easy to use—stairs, draperies, carpets, upholstery, picture railings, cupboards, the radio and the family automobile, etc., etc. ALL domestic cleaning taken in its stride. A iscompact and handy, it merely suspends in the cleaning cupboard. As with a household broom it is always ready for immediate action. A ¡s a domestic appliance and is constructed ONLY to the highest standards. m is s o ld complete. There are no extra cleaning tools to buy. 0 ¡s in heavy demand for export but production is improving slowly. ALL ENQUIRIES WILL RECEIVE CAREFUL AND CONSIDERATE ATTENTION VACUUMS LTD. ALDRIDGE ROAD TENBY STREET NORTH BIRM IN G H AM 22B BIRMINGHAM 1 Tel. : BIR. 4793 Tel.: CEN. 2124 Telegrams: "BUSTLER. BIRMINGHAM“ 106 (S u p p lem en t) E l e c t r i c a l R e v ie w N o ve m b er 8, 1946 A Monument to E f f i c i e n c y In a single passage through the Metafilter, transformer and heavily carbonized switch oils can be completely freed from all suspended impurities; and all traces of sludge and moisture removed—a monumental tribute to the efficiency of the Metafilter. The Metafilter is economical and easy to operate; and can be used on switches and transformers while under load.

( Jfletajwmtiori

THE METAFILTRATION COMPANY LTD. BELGRAVE ROAD - HOUNSLOW - MIDDLESEX Telephone - - Hounslow 1121/2/3 Telegrams - - Metafilter, Hounslow

A new, heavy-

duty switch of

robust construc­

tion suitable for

** S p e e to l ” Tap Grinding multi-circuit opera­ Attachment provides an inexpensive m e an s o f tions and capable of giving sharpening broken or dull taps of all types and sizes up to Jin . diameter. a long and trouble-free life. Can It is extremely simple to operate and can be fixed to any off-hand bench or pedestal be built up into i, 2, 3, 4 or 5 -cell units providing grinder in a few minutes. Right and left hand large range of contact combinations. Send for taps are accommodated with equal ease and the attachment grinds taper, second and plug folder giving full chamfers accurately. particulars.

PRODUCT S p e e d T e e is lf i MADE BY AUSTINLITE LTD. VEREKER BUILDINGS. GRESSE ST.. LONDON W.l. Mussum 1039/1099. (PROPRIETORS: CHANCE BROTHERS LTD.)

TAYLOB 1031 LIGHTHOUSE WORKS SMETHWICK • BIRMINGHAM vent be r 8, 1946 E l e c t r ic a l R e v ie w ( S u p p le m e n t) 107

1. Moving Iron or Moving Coil Ammeter and Volt­ meter 2. Cirscale Test Set 3. Dynamometer Wattmeter 4. Frequency Meter 5. D o u b I e ended ■ Ammeter and Volt­ meter 6. Change Coil Test Set 7. Induction W att­ meter 8. Power Factor Meter

THE RECORD ELECTRICAL CO. LTD. BROADHE* FH, ALTRINCHAM, CHESHIRE Telephone : Altrincham 3221/2 Lo n d o n Office: 28 VICTORIA ST., WESTMINSTER, S.W I Telegrams : “ Infusion,” Altrincham 108 (Supplement) E l e c t r i c a l R e v ie w N o ve m b e r 8, 1946

— a a j i H —

( r e g d . trade-mark)

Improved Type CERAMIC EMBEDDED RESISTORS

of the highest quality, complying with all Government Specifications

Please allow us to send you a copy of our descriptive catalogue THE ZENITH ELECTRIC CO. LTD. Zenith Works, Villiers Road Willesden Green, London, N.W.2

Phone: WILIesden 4087-8-9 Gram s: ” Voltaohm, Phone, London ”

Natural in all Grades and Qualities, Stove Micas, Plates, Washers, Commutator Seg­ ments, Condenser Films, etc. Moulding, Commutator, Flex­ r 'h e RIGHT ible, Heat-resisting Qualities, Gommutacor Rings, Spools, Tubes, etc. AHGLEON Mouldings of any shape or form, Tubes, Plates, Washers, Sheets In all thicknesses, LIGHT etc. SEND TO THE MANUFACTURERS The BIRMINGHAM MICA Co. Ltd. South Road, Hockley, Birmingham Telegrams: “ Insulation, Phone, Birmingham.“ Phone : Northern 0118.

pure

for CLEANINC f i l t e r • nd DRYING TRANSFORMER C. M. CHURCHOUSE LTD. p a p e r OIL CLARENDON WORKS • CLARENDON CROSS W rite for Samples and Prices to EVANS, ADLARD & Co. Ltd. LONDON, W .ll POSTLIP MILLS, WINCHCOMBE. CHELTENHAM N ° 'e m ber 8, 1946 E l e c t r i c a l R e v ie w (Supplement) 109

B4000 r a n g e SURFACE, SEMI- RECESSED a nd FLUSH HEAVY DUTY SWITCHES with COMPLETE Positive Action

The underslung switch movement which has Catalogue Numbers— S U R F A C E B 4010 successfully dealt with SEM I-REC . B 6010 SIX TIMES the rated F L U S H C 2007 also in IR O N C L A D current load types

I, h. TUCKER & to. LTD., Kings M„ Tyselqi, Biraiinalwm II

Makers of First Grade Electrical Accessories for over 50 Years 110 (S u p p lem en t) E l e c t r i c a l R e v ie w N o ve m b er 8, 1946

1 3 ¿¿C

W e are not interested in Bill Sykes, but, when it comes to “ Safe Blowing ” we can supply you with “ Safetee ” Cartridge Fuses of a type to suit your particular requirements and which guarantee you safe blowing under overload conditions.

O f the many types available, those of 2-amp. size and over give definite indication when “ blown.”

Be on the safe side— specify and use ILWIIIKCIS WEEKES’ “ SAFETEE” (LUTON) LIMITED (Indicating) WINGATE ROAD, LUTON, BEDS. CARTRIDGE FUSES Telephone : Luton 278.

THE SCOPHONY Grelco TORQUE MOTOR TERMINAL BLOCKS Best quality, black bakelite, Terminal an unorthod ox synchronous Blocks or Connectors. Used extensively A.C. Motor with an exceptionally high torque for low input. for telephones, telegraphs, radio, bells, signals, relays, Instantaneous stopping traffic signals, etc., 2, 3, 4, 5, 6, 8, 10 and 12 w a y in F o u r Types • Some applications for which Fully illustrated descriptive Folder on application i t is particularly suitable GRELCO Ltd., Grelco Works. Hopcott, Minehead.Somerset ★ AUTOMATIC TUNING DEVICES ★ TELE-COMMUNICATION ★ GYROSCOPIC CONTROL ★ REMOTE CONTROL — and it is A SCOPHONY PRODUCT WIRE WIRE GRIDS GUARDS ScpphonyLjd. RACKS HANDLES

36 V IC T O R IA S T R E E T LONDON, S.W.I FRAMES BASKETS Telephone Abbey 485*2 BALSALL HEATH WIREWORKS G ra m s : , DIDMIMPU All m Phone: 'Wiring, B’ham DlnlrlllibnAm M Calthorpe I733 N ovem ber 8, 1946 E l e c t r ic a l R e v ie w (Supplement) 111

—,—

ELECTRO ZINCING by TH E G A LV A N A X PROCESS

is approved by the A.I.D. when a zinc coating is specified as a substi­ tute for Cadmium plating owing to a shortage of the latter metal. For fast deposits on wrought iron and steel it is unequalled in colour, simple to operate, and has excellent throwing power besides providing efficient protection from rust.

mm & C° LT-D GREAT HAMPTON STREET BIRMINGHAM 18 112 (S u p p lem en t) E l e c t r i c a l R e v ie w N o ve m b er 8, 1946

The truth of the saying that “ Nothing succeeds like success ” was never more apparent than in the case of “ Donlok” Switches. Thousands installed in industrial plants, power stations, etc., over periods of up to 20 years ago are still giving efficient and trouble- free service.

‘ D o n lo k ’ Switches are standardised in sizes up to 400 amps, and made in larger sizes in special cases, for which enquir­ ies are Welcomed. DONOVANS THE DONOVAN ELECTRICAL CP LT.° BIRMINGHAM, 9 ELECTRICAL ENGINEERS AND STOCKHOLDERS. pHiwe-STECHFORD 2277 (P.B.X.) G r a m s - DONOVAN,Birmingham'

Rockman INVISAFLEX INDUSTRIAL L0< SOLDER GUNS LIGHTING UNIT E N C t o ^

B m c k ,- u K t M oruriM w saJl ^ o u g h o v ) ^ urtduiJtO ose

ELECTRICITY SERVICES LTD- 86 CANNON ST.E.C.4

Maui dC Mu^pfitf £td. ^ 7 / , , /-... \ • Minimum Heat Loss f • Maximum Efficiency UAith Itie. ■ • Perfect Balance— Effortless INSULATING MATERIALS . g P ?™ '?"Powertnd Labour EBONITE Sheets, Rods and Tubes LAMINATED BAKELITE SHEETS ß o c J e m a n Cut Pieces and Turnings a Speciality ENGINEERING CO. LTD. 3 INGLEWOOD ROAD, LONDON, N.W.6 16-18 Russell Street, Manchester I Telephone: HAMpatead 3938 N ovem ber 8, 1946 E l e c t r ic a l R e v ie w ( S u p p le m e n t) 113 CONTROL

ELECTRIC furnaces ELECTROPLATING PLANTS X-RAY EQUIPMENTS SUPPLY SYSTEMS TESTING PLANTS RECTIFIERS

HAND OPERATION REMOTE OR AUTOMATIC CONTROL

BA.EC 0 ON LOAD VOLTAGE REGULATOR BRENTFORD TRANSFORMERS LTD. BRENTFORD MIDDX

Lionel Robinson & Co. Ltd. 3 Staple Inn London, W.C. I Telephone . . HOLborn «322 114 (Su p p lem en t) E l e c t r i c a l R e v i e w N o ve m b e r 8, 1946

A QUESTION OF RESISTANCE

Rolling Resistance

Amongst the many forms of resis­ tance, several can be extremely tiresome. If, however, your problem is concerned with electrical resis­ tance materials, it would be worth your while to investigate the proper­ ties of the well-known Brightrav series of nickel-chromium alloys. It will save you a deal of trouble.

Write fo r a free copy o f our booklet ‘Electrical Resistance Materials' HENRY WIGGIN AND COMPANY LTD.

Wiggin Street; Birmingham 16 w s 2ab

ARCOLECTRIC EARTHING CLIPS WITH STAIRCASE SPECIAL BITE AND GRIP INTO TUBE OR ARMOURING SWITCH Note the tongue which ensures perfect and S u rfa c e permanent contact. Semi-recessed Easy to fix. Nuts o r cannot turn. All sizes Conduit Box Fitting front half to two inches. THE W rite for Catalogue DONOVAN ELECTRICAL CO. ARCOLECTRIC (SWITCHES) L™ EDWIN RD., TWICKENHAM

CONTACTU M SWITCHES, SWITCHPLUGS, SOCKETS, PLUGS CEILING SWITCHES, BELL PUSHES, ETC.

are in great demand, but still in short supply owing to the difficulty of obtaining certain raw materials CONTACTUM LTD. Victoria Works, Edgware Road

G LA dstone 6366-7 CRICKLEWOOD, LONDON, N.W.2 N ovem b er 8, 1946 E l e c t r ic a l R e v ie w ( Supplement) 1 15

Much of the work of Britain’s Premier Electri­ cal Repair Service is for Central Stations all over the Country. For the discriminating engineer there could be no greater tribute to the reliability of Collins workmanship. You can rely on Collins.

COLLINS Collins Electrical Ltd. Head O/Rct US Clcrkenwell Road London EC I , Hoi born 0212-3-4 I i 92 St. Alban» Place Upper St. lalington N I J Cmnonbary 2227-9 Mk Q L 9 ds It Featherstone Rd. Southall J v M k Southall OUt J H w d 9 116 {Supplement) E l e c t r i c a l R e v ie w Novem ber 8, 1946

/ m ' y

f o T IDENTIFICATION ! Ł "W ///Ę

• Transparent or Coloured, in 72-yard rolls, many widths.

Official Distributors : GORDON & GOTCH LTD. Dept. E.R.2, 75/79 Farringdon St., London, E.G. 4

VISUAL TWO - DIMENSIONAL lineation of any recurrent law. RELATIVE TIMING OF EVENTS and other comparative measurements with extreme accuracy. PHOTOGRAPHIC RECORDING of SELF-ADHESIVE CELLULOSE TAPE transient phenomena. SIMULTANEOUS INDICATION of two variables on a common time axis. “ THERMOLECTRICS LTD.” Completely embracing all the above func­ tions, the unique Cossor DOUBLE BEAM ELECTRIC HEATING Cathode Ray Tube as embodied in Model 339 PADS AND Oscillograph, is inherently applicable to all BLANKETS problems arising in the R E C O R D IN G IN D IC A T IN G and EXPERT MONITORING REPAIRS of effects and events In Electrical engineer­ SERVICE (ALL MAKES) ing ; and in Mechanical engineering when the effects can be made available as a voltage. CHAPEL WORKS. CHURCH Recurrent traces are studied visually and ST., HAMPTON-ON-THAMES transients may be photographically recorded with Model 427 Camera. A. C. COSSOR Ltd Instruments Dept. Cossor House, London, N.5 ’Phone : CANonbury 1234 (30 lines). 'Grams: Amplifiers Phone London. Trouble-free Chargers fitted with selenium all-metal rectifi­ cation. Thirty years’ experience behind every Runbaken pro­ duct. Good allowance on your old charger. Booklet Q.5, giving useful informa­ tion and describing 12 models, on request.

RUNBAKEN-MANCHESTER / November 8, 1946 E l e c t r ic a l R e v ie w ( Supplement) 117

Illustrated are a few of the many types of Connectors manufactured by us for use w it h PORTABLE APPLIANCES We specialise in complete flexible assemblies. Let us quote for your requirements

WARD&GOLDSTONE Lt d . P e n d l e t o n , M a n c h e s t e r . 6 ESTABLISHED OVSR HALF CENTURY

RESISTANCES

Although present circumstances render it difficult for us to give our pre-war service to all customers we are still working in their interests.

New materials and manufacturing processes which we are now using to increase output also contribute in large measure to improved perfor­ mance and reliability of our products. Thus, when normal times return, all users of Berco Resistances will benefit by our work to-day.

t h e BRITISH ElECTRIC RESISTANCE CO., ITD. Q U E E N S WAT, PONDERS END, MIDDLESEX

Telephone : HO W ARD 1492 Telegrams: “ VITROHM, ENFIELD.*• R.3 118 (S u p p lem en t) E l e c t r i c a l R e v ie w N o ve m b er 8, 1946

The illustration shows a Hackbridge T ransform er supplying an air-compressor. (By courtesy of Messrs. Rubery E v E R Y new plan for industrial development must Owen Ltd.) first take into account the matter of electricity supply. In

the main factory substations and throughout the factory, IN ALL TYPES, SIZES whenever reliability of electrical distribution is essential, A N D VOLTAGES the answer to this problem, backed by a quarter-century of for a wide range of experience, is the installation of HACKBRIDGE industrial applications. transformers.

TRANS FORMERS

HACKBRIDGE ELECTRIC CONSTRUCTION CO LTD W A LT ON-ON- THAMES SURREY N °v e m b e r 8, 1946 E l e c t r ic a l R e v ie w (Supplement) 119

'U e f t & i t o - t / c e ¿t£\t tiuce"

THE DIRECT ROAD In some new product you con­

to template, in some improvement In c r e a se d S ales to a machine in production, Packed with customer-appeal, the Home- there is certain to be a use for shade range of attractive Lamp Shades and a new type of spring, perhaps Standards will draw the attention of people who insist on having beautiful things in never thought of before. We their homes. Your sales must increase if you stock Homeshade Products . . prompt have been thinking, designing delivery is assured. Don’t forget we also supply everything else electrical, Radio, and making springs for nearly Heaters, Cleaners, etc. W rite to-day for Catalogue and full informa­ 50 years. There is a wealth of tion of our ever-growing range of easy selling electrical goods. enterprise, experience and tech­

nical knowledge at your service.

g g S S S g ^ r . THE TEMPERED SPRING (o. Lid. HCL ATTERCLIFFE ROAD, SHEFFIELD 4 ELECTRICAL distributors D o m e s t ic Electrical Appliances Table and Floor Standards and Shades H O M E S H A D E c o m p a n y l t d .

9 9 D -I ,.r St.. L o n d o n , N.W .I. Tel. : WELbeck 3003 120 (Supplement) E l e c t r ic a l R e v ie w N o ve m b er 8, 1946

Q itii Vkdûi

M O D E L N o . 53 Charges 6 2-volt ENGRAVED BRASS, CAST BRASS AND ALUMINIUM. cells at I to 5 amps. ENAMELLED BRONZE AND CHEMICALLY ENGRAVED P ric e : £8 3 I PLATES OF ALL TYPES IN ALL LANGUAGES MANU­ FACTURED BY THE EMPIRE’S LARGEST GENERAL Send [o r List No. i 042 ENGRAVERS. SAMPLES AND QUOTATIONS ON REQUEST. EDWARD H. THEW LIMITED 11. Dean Street N e w castle - on Tyne

SNAP-ACTION LIMIT SWITCH LONDEX ^ RELAYS T Y P E A K F R R E L A Y L Q A approved (D by the OTHER PRODUCTS: G. P. O. AUTOMATIC STARTERS ROTARY SWITCHES Ask fo r Leaflet CONTACTORS 2051ER OVERLOADS LONDEX LTD SYD cnh. m British Klockner Switchgear Ltd. MANUFACTURERS OF RELAYS 6258-9 Chertsey, Surrey. phot»: chertsey 2221/2 207 ANERLEY ROAD LONDON S.E .2 0 N o ve m b er 8, 1946 E l e c t r ic a l R e v ie w iii ffinxvzituf fa ea Mf with the ‘SECOMAK’ (REGD.) GAS TORCH the high-pressure flame of this inexpensive equipment enables brazing, hardening and all forge work to be done quickly and efficiently The cost of installation is negligible This gas torch is another attachment to the versatile ‘ SECO M AK’ Portable Blower which latter can be instantly unshipped and used for blowing out motors, suction cleaning, etc. Data Sheet I03/33E gives full particulars

SERVICE ELECTRIC CO. LTD. S i v v W t m b L E Y ABBEY MANUFACTURING ESTATE, ALPERTON, MIDDX. 0 / 9 4

horizontal or VERTICAL MOUNTING FOR LARGE BSS CONDUIT BOX WARDLE T O ® ( L c

Price List L587 on application

WARDLE ENGINEERING CO. LTD. OLD TRAFFORD. MANCHESTER 16. LONDON 34 VICTORIA STREET. SW.I. . ÏV 1946

'

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THE WONDERFUL LAMP

. e . G . e . P A oavtr

A new era of brightness in the hotn^,

office and factory’. Brightness, cheerful­

ness, cleanliness, fresh air, good healt

and good lighting are the order of

day. Good lighting is a tonic —

with Osram!.

Advt. of The General Electric Co. Ltd., Magnet House, Kingsway, London, W .C .2

Printed in Great Britain at The Chapei, R iver TRESS, Andover, Hants, and imblished by E lectrical Review, Limited, at Dorset House, Stamford street. London. S.E .l.