REVIEW

VOL. CXXXIX. DECEMBER 27, 1946 NO. 3605

[POUTECHNIKI)

I S t #

“ a n d w i t h regard to LIGHTING... ^

I must say the Mazda people were tremendously helpful. Qualified engineers from their Lighting Advisory Service took voluminous notes of the number of people to be employed; the class of work they will undertake; the arrangement of the machines to be installed, etc., etc. Later they submitted the finest lighting plan I have ever known.”

LIG H TIN G All who are concerned with the A D VISO RY installation or renewal of light- ing are invited to communicate SERVICE wtth our Lighting Advisory Service, Bridle Path, Watford. Phone 7701

LA M PS AND FITTINGS The British Thomson-Houston Co. Ltd. Crown House, Aldwych, London, W.C.2

M4064 ii E l e c t r i c a l R e v i e w December 27, 1946

LONDON ELECTRICAL COMPANY K ™ - ) LTD WATERLOO 5620 LONDON• S E-I E l e c t r i c a l R e v i e w

This automatically-controlled HEATRAE Electric Water Heater is indeed a boon to us housewives. Just the type we’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 M A K E ELECTRIC WELDING MACHINES SPOT, SEAM

AND BUTT FOR WIRELESS AND SIM ILAR A W ID E WELDERS CONNECTIONS SIZES IN STOCK 35 years* experience

Automatic or Non- ROSS COURTNEY *LTco ° A u to m atic ASHBROOK ROAD, LONDON N.I9 With or without Electric Control

The quickest and most economical method of Welding Oil Drums, Bars STOPS Tyres, Wheel Rims’ to the spec­ Tubes and Angles’ ific require­ ments of our T„e WESTMINSTER ENG. Co. Ltd! customers Victoria Road, Willesden Junction, N .W . 10 Makers of all Dynamos, Motors, Alternators and types of repe­ Transformers Rewound and Re-constructed. tition products from the bar In “ Westminster ” Brush Holders. Process all metals Arc Lamps. Telephone: Telegrams; M C L and REPETITION LTD. Elgar 7872 (2 lines) "Regency, Phone, London Pool Lane • Lanqlcij • Birmingham.

A 2 F l f .c t r i c a l R f.v if .w December 27, 1946

Battery operated shuttle

car at a charging station

in a Scottish coal mine..

Typical Mobile Oil-immersed Rectifier for charging shuttle car batteries underground. Note the rigid design of the tank, the strong underbase and fender, and the stepped axle slots for different road le ve ls.

W ith this new M OBILE OIL-IMMERSED RECTIFIER battery charg­ ing direct from the A.C. mains becomes a simple and economical operation. *

It is completely self-contained, transportable, takes up com paratively small space, and simplicity in design reduces maintenance to a m in im u m . ADVANTAGES

Compact — Light Weight. Battery Cannot Discharge Supplied Ready for Use. into Rectifier. Transportable. No Moving Parts — No Wear. Easy to Install. Fool-Proof. Simple to Operate. Low Maintenance.

BRUCE PEEBLES Be CO. LTD.,ENGINEERS, EDINBURGH. December 27, 1946 Electrical Review

AW*

WE REGRET OUR INABILITY TO KEEP OUR FRIENDS FULLY SUPPLIED WITH (§) SWITCH AND DISTRIBUTION GEAR WE HOPE TO MORE THAN SATISFY EXISTING DEMANDS WHEN THE CERAMIC POSITION IMPROVES IN THE MEANTIME PLEASE REMEMBER THAT WE ARE DOING OUR BEST UNDER DIFFICULT CONDITIONS

BILL SW ITCHGEAR LTD Manchester ASTON LANE. PERRY BARR London. GLASGOW h8RAMHALL.h.poliaro . RIRMINOUAMD I l\/Y\l INVjPlM/Vl ■ Z90 U BURTON 0aF#sr - ON - TRENT

PHONE BIRCHFIELDS 5011. GRAMS:'BILSWITCH'BHAM. 4 E l e c t r i c a l R e v i e w Decem ber 27, 1946

THE TOWER OF LONDON Famous as .a fortress, palace, and prison. The corps of Beef-eaters was instituted m the reign of Edward VI.

Tvt TOW6R. s j Lo nson

SwÄ^ae-. CRYSE

MADE IN ENGLAND ¿ a m f v j

FIFTY YEARS OF QUALITY £, SERVICE

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

CRYSELCO LIMITED, KEMPSTON WORKS, BE D F O R D Decem ber 27, 1946 E l e c t r i c a l R e v i e w 5

A nnouncem ent

DYNAMO AND MOTOR PRICES

The Associated Dynamo and Motor Manufacturers named below announce that on and from 1st January, 1947, all outstanding price lists will be cancelled.

Details of new prices may be obtained on application to your usual suppliers.

British Thomson-Houston Co., Ltd. Laurence Scott & Electromotors Ltd.

Brush Electrical Engineering Co., Ltd. Macfarlane Engineering Co., Ltd.

Bull Motors (E. R. & F. Turner Ltd.) Mather & Platt Ltd.

Crompton Parkinson Ltd. Mawdsle/'s Ltd.

Greenwood & Batley Ltd. Metropolitan-Vickers Electrical Co., Ltd.

Harland Engineering Co., Ltd. Bruce Peebles & Co., Ltd.

Hopkinson Motors & Electric Co., Ltd. A. Reyrolle & Co., Ltd.

Lancashire Dynamo & Crypto Ltd. Veritys Ltd. Decem ber 27, 1946 ELECTRtCAL REVIEW

An un-retouched photograph of a Harland concen- tric-wound stator before impreg­ nation.

It is easier to believe a photograph such as this than it is to believe glib phrases about “ quality ” and “ craftsmanship.” This is indisputable evidence— proof of the skill employed and craftsmanship displayed in the production of Harland motors. These qualities are reflected in the lasting-power and operational efficiency of all Harland Electrics— be they A.C. or D.C. motors, generators or alternators.

# THE HARLAND ENGINEERING CO. LTD. Works: ALLOA • SCOTLAND £ London Office:— HARLAND HOUSE, 20 PARK ST., W .I., Telephone Grosvenor 1221 • OTHER BRANCHES AT MANCHESTER GLASGOW, BIRMINGHAM, BRISTOL, HULL, LEEDS NEW 6-3*1 CASTLE-ON-TYNE. NOTTINGHAM AND SWANSEA December 27, 1946 E l e c t r i c a l R e v ie w 7 HISTORIES No. 2

PROBLEM: Drilling and Tapping on Loco. Work. CASE REPORT. In one boiler repair shop staybolt drilling and tapping had always caused a serious bottleneck. Y\\cyc\e tools were recommended for the work and were eventually adopted by the work’s engineers. The high constant-speed V\\cyc\e Drills with their air-feed cylinders and balance- suspension immediately cut drilling times to a fraction . . . VY\cy£\e Tappers followed up to give clean threads, free from distortion, and, instead of lagging behind as formerly, this bottleneck no longer existed. CONCLUSION. V\\cyc\e efficiency, constant speed, lightness, safety, reliability, economy and less operator fatigue represent the greatest step forward of recent years in the application of power electric tools to locomotive construction and repair. This advertisement describes a problem solved by (p on locomotive work. You also will have production problems which can be solved by (p engineers.

AIR COMPRESSORS • PNEUMATIC TOOLS 1 ELECTRIC TOOLS • DIESEL ENGINES ' VACUUM PUMPS CONTRACTORS’ EQUIPMENT 1 ROCK DRILLS ■ DIAMOND DRILLS • OIL WELL TOOLS 8 E l e c t r i c a l R e v i e w D ecem ber 27, 1946

THE BEST WORK FOR INVARIABLE DEMANDS THE BEST LIGHT

T H E D & G GIRDER FITTINGS # Gives Concentration of Light on the JOB. # Shielded from operator's eyes. # Horizontal or Vertical Mounting # Single, Double or Three Arm Extension. # Illustrated Catalogue sent on request. TIME DRAKE & GORHAM WHOLESALE LTD. SWITCHES 77 LONG ACRE, LONDON, W.C.2 Telephone : TEMple Bar 3993 THE M ANCHESTER— 29 Piccadilly. BR IG H TO N — 24 Marlborough Place. G L A S G O W — 182 St. Vincent Street. HORSTMANN GEAR BRISTO L— 2 fit 4 Church Street, Temple. D U BL IN — 2 Church Lane, College Green. CO. LTD. Midland Representative : NEWBRIDGE WORKS, BATH. W . T. B O W ER , 184 Jockey Road, Sutton Coldfield. Teh B ath 7 2 4 !. Telegram s:H orstm arm , B ath . December 27, 1946 E l e c t r i c a l R e v i e w 9

B.I. Callender’s National Sales Service covers the British Isles. There is an office in your district fully staffed and equipped to meet the special needs of the electrical industry in the area.

BRITISH INSULATED CALLENDER’S CABLES LIMITED NORFOLK HOUSE, NORFOLK STREET. LONDON W.C.2 2 7, 1946 10 E l e c t r i c a l R e v i e w December

700C

MULTI-POLE WEATHERPROOF METAL-CLAD PLUGS & SOCKETS S • Pole and over

For Electric Lighting and Power, Transmission, Communication, Portable Tools, etc.

Plain Socket

Manufactured by SIMMONDS & STOKES LTD. VICTORIA HOUSE, SOUTHAMPTON ROW, LONDON, W.C.I HOLBORN 8637

IOCO varn ished glass fabrics and tapes VARNISHED GLASS FABRICS and TAPES . . . Build smaller and more efficient motors by using loco varnished glass fabrics and tapes. They are specially designed to resist high voltage at elevated temperatures.

W e also manufacture INSULATING AND OILED FABRICS FOR CABLE WORK. SWITCHBOARD RUBBER MATS. A N D ELECTRICIANS’ RUBBER GLOVES. IOCO LTD. Anniesland GLASGOW December 27, 1946 E l e c t r i c a l R e v i e w 11

FERRANTI

A scientific and practical recognition of the require­ ments of the USER and the NATION. Its compactness conserves material resources.

1 ' : , I ...... bh allI meant i I ccnoeU w m ateluU ied ou teet

FERRANTI LTD., HOLLINWOOD, LANCS. i London Office: Kern House, Kingsway, W.C.2. ■ ______-•FM 79J 27, 194-6 12 E l e c t r i c a l R e v ie w Decem ber

IN MORE & MORE RENDEZVOUS

OF RELAXATION

THE PORTABLE [LECTMC CLOTHES HORSE

... the LIGHT entertainment is carried universally via

pioneers of the This remarkable new drier is now in quantity production and stocks are available to CONDUIT TUB recognised retailers. If you have not sent in a request for information you are invited to do so. The LECTROSS portable electric clothes horse That so many of the lights, which enables every woman to be sure that her urgently go with the laughter, in the needed personal laundry is thoroughly dried and entertainment World are aired, even on damp and rainy days. Safe it safely conducted by cannot harm baby or scorch the most delicate METALLIC isafitting fabrics. Economical— its B LA C K H EA T element compliment to their never glows and consumes less than one unit consistent accu­ per hour. Specially useful to the young mother. racy and quality. Supplied with chromium rails & w hiteor pastel bases

JO H N A.GREY METALLIC SEAMLESS TUBE CO. LTD. ludsaie Hill, Birmingham. Phone CEN7167. Grams. car^ i' Birmingham. Sales Depots: London : 88 Goswell Rd., E.C.1. AND PARTNERS LTD. Newcastle-on.Tyne : St John Street Leeds. 5 York P‘ac Swansea. 1 Grove Place Glasgow: 137a St. Vincent Street PICCADILLY HOUSE. LONDON, S. W. I .M.S.a December 27, 1946 E l e c t r i c a l R e v ie w 13 For Electridty Cervtce—

These illustrations show Henley Cables being laid by the Luton Electricity Undertaking, at the Corporation’s estate of Lea- Luton uses grave. Like many local councils play­ HENLEY ing an active part in the Nation’s housing programme, Luton are C a b l e s using Henley Cables to carry the current. Famous for over a Century

W. T. HENLEY’S TELEGRAPH WORKS CO. LTD 51— 53 HATTON CARDEN, L O N D O N . E C ! 27, 1946 14 E l e c t r i c a l R e v ie w Decem ber

THE FLUXITE QUIBS '* AT WORK “ I ’d just Wes to know the big goose Who turned all then ball bearings loose ; And also the kite Who yelled ‘ Fetch the FL U X IT E .’ I ’m whacked to the wide. What’s the usef’’

SPARKLETS For all SO LD ERIN G work—you need FLUXlTE- the paste flux—with which even dirty metals art soldered and ** tinned.** For the jointing of lead —without solder and the ** running ** of white m etal bearings— w itho ut** tinning ** the bearing. It is suitable for ALL METALS—excepting A LU M IN IU M —and can be used with safety on ELECTRICAL and other sensitive apparatus. W ith F L U X IT E joints can be '* wiped ** success* fully that are impossible by any other method. Used fo r o ve r 30 years in G o ve rn m e n t works and by leading Engineers and Manufacturers. OF PRAM PRESSURE % A LL IR O N M O N G ER S in tins— I0d., I/O and 3/-. V- The ** FLUXITE GUN ’ puts FLU X IT E where you DIE want It by a simple pr« sure. Price 1/6 or filled 2/i CASTINGS ""”' .... FLUXITE SIMPLIFIES A l l SOLDERING wun rot rutilar re* t’!,0bl'^Kd SPARKLET! LTD. BIT CASTWCS WmtOR, LMOOII. H18, 18,6 Write for Leaflets on Case- Hardening Steel and Tempering Teels with F L U X IT E , alee on " Wiped ” join to. Price 14. each. F L U X I T E L T D . (Dept. R.E.), Bermondsey St., S.E.I

CAXTON METER BOARDS AS SUPPLIED TO LEADING CORPORATIONS AND ELECTRIC SUPPLY COMPANIES FIBRECONDUIT FOR UNDERGROUND CABLES EXTREMELY EASY TO LAY, NO PRO JECTIO N AT JOINTS, LONGjLENGTHS,[FEW JOINTS, PERFECT ALIGNMENT. W rite for details and specification. CAXTON WOOD TURNERY U ? THE MARKET HAAeOROUOM. IEICI- K E Y ENGINEERING CÖ.LTD 4 QUEEN VICTORIA ST., Ä * « t224S (tntw) TRAFFORD PARK, LONDON. E.C.4. and MANCHESTER. Tel. : City 2235 Tel.: Tr afford Park 1903 % December 27, 1946 E i -Ec t r i c a l R e v ie w I?

NALD "Too

Mit NSTRUMENTS

NALDERS Hyper-Scale, Air- Damped, Soft Iron Instru­ ments— Gravity Control — are available for alternating or continuous current. Readings are accurate and dead-beat, dials being 3", 4", 5", 6", or 8", diameter as re­ quired. Power consumption is low and working parts are completely insulated from casings.

N.C.S. PR O D U CTS include all types of Electrical Measuring Instruments as well N .C .S . EXCELLENCE as Protective Relays, Synchronisers, IS A RECOGNISED Circuit Breakers, etc. In the complete range every need of accuracy, reliability, STANDARD durability and convenience is fully met, prices being competitive without sacrifice of quality. Quotations on request.

NALDER BROS. & THOMPSON LTD. DALSTON LANE WORKS, LONDON, E.8.

Telephone : Clissold 2365 (3 lines) Telejrams: OCCLUDE, HACK, LONDON 16 Electrical Review D e c e m b e r 27, 1946

Adjustable general u tility Lamp The model illustrated above is undoubtedly the most popular product of its kind in the industry. A very large output has been distributed through­ out the world. Each lamp is supplied complete with removable ash or pin tray, space for pen and pencil, flex, convenient switch control, and the efficient adjustable re­ flector. The overall height fully extended is 21 inches. It is indeed very adjustable, and the light can be directed into practically any position.

Cat. No. LGH. 1018.

CITY TUBE AND CONDUIT MILLS L. G. H AWKINS & Co. Ltd. SMETHWICK. BIRMINGHAM 30-35 Drury Lane, London, W.C.2 Telephone Smethwick 1511 (5 lines) London: 70 Finsbury Pavement, E.C.2 Telephone : Temple Bar 5811 Liverpool: CaledonianBldgs., 14 TithebarnSt. 2

dm 1294 December 27, 1946 E l e c t r i c a l R e v ie w 17

In spite of continued restrictions all available supplies of “ Britmac ” Electrical Accessories are reaching the recognised Electrical Wholesalers who, we know, are doing their utmost to meet your demands.

The Socket and Plug illustrated, List No. P43I2, Is the 5 amp. Surface pattern.

ELECTRICAL CCESSORIES

ELECTRICAL ACCESSORIES FOR ALL INSTALLATIONS

BRITMMSALES ORGANISATION M T OF R C. M H. PARSONS 10 LTD LTD. Head Office. BRITANNIA WORKS • WHARFDALE ROAD • TYSELEY • BIRMINGHAM • II Telephone : ACOcks Green 1191 (3 lines) Telegrams : "B R IT M A C , B IR M IN G H A M ” Glasgow Office : GRESHAM CHAMBERS, 45 WEST NILE STREET. GLASGOW, C.l. Telephone : Central 9106

A t Decem ber 27, 1946 18 E l e c t r i c a l R e v ie w

I J EMARKABLE chap, this D. C. Bias. Here we show him, ^ ^ as it were, on his native heath—the sub-station—where, at lighting up time and at dawn, his modest, 6-volt D. C. finger prods the mains, reaching out to every lamp in the service area and switching it on or off—a thousand times a day if need be. He has a crafty eye on the revenue value of * off-peak ’ loads, too. That slender, 6-volt finger of his is itching to get to work on your ‘off-peak’ problems. Send for particulars and let us tell you just how simple, inexpensive and reliable the D. C. Bias system is. What’s more, we can prove it BEFORE you place your order. Standard Telephones and Cables Limited (Remote Control Section) OAKLEIGH ROAD, NEW SOUTHGATE N Telephone : Enterprise 1234 Telegrams : “Essteecee, Telex, London” December 27, 1946 E l e c t r i c a l R e v ie w 19 PRESSED STEEL TANKS

An example of the adaptability of the Braithwaite Pressed Steel Tank. A tank of unit sectional construction ready to receive, for testing purposes, a pontoon of the type used during the ‘ D ’ Day landing operations. BRAITHWAITE & CO ENGINEERS LTD

Tem porary London Office : Telephone: WHIteha.il 3993 KINGS HOUSE HAYMARKET LONDON S.W-1 D e c e m b e r E l e c t r i c a l R e v ie w

SWITCHES & ^JL^THERM OSTATS ELECTRIC OVEN SWITCHES AND THERMOSTATS — also ROTARY AND TOGGLE SWITCHES FOR EVERY PURPOSE S.P. and D.P. D.P.-D.T. MULTI-CIRCUITS

DIAM ON BISW ITCHES

V-esty/iess ana/ /fta/ia/aefaeers fe r 30 p ears GUNNERSBURY AVENUE. CHISWICK. LONDON,""'w7 PLANTDecember 27, 19.6 MOTORISATIONE l e c t r i c a l R e v i e w 21 USING ENGLISH ELECTRIC MOTORS AND OVERHEAD BUS-BAR SYSTEM

View in a factory containing 105 belt driven machine tools.

105 machine tools changed over to in­ dividual motor drive, Including all electrical connectionsand motor­ isation of the machines. This changeover is fully described in our publication entitled ‘PLANT MOTORISATION’

WRITE FOR YOUR COPY to Fusegear Dept. STAFFORD. THE ENGLISH ELECTRIC COMPANY LIMITED London Office: QUEEN'S HOUSE, KINGSWAY, LONDON, W.C.2 W O R K S : STAFFORD - PRESTON - RUGBY - BRADFORD - LIVERPOOL December 21, 1946 E l e c t r i c a l R e v ie w

IIO I ELECTRIC ™ E Hol FENCING UNIT eliminates costly fencing lor The Designed to withstand rigorous con ditions and extremes of temperature. Speedily erected with ease. Always safe and cheap to run. Further details o n _____ application r-Q^fEOF to Dept. IM P U L S E ,.! ER/IIF. ADJUSTMENT)

+SELF it EXTREMELY LOW STARTlFK CURRENT CONSUMPTION '¿■■HERMETICALLY SEALED LEAK- PROOF COIL * DESIGNED TO COM­ PLY WITH BSS 1222

WARTON ROAD , - i crcjj mnm i STRATFORD LONDON. E .IS MARyand 6611

T H E CHOICE o F-

HIG H-CLASS GOODS BEARING SUCH NAMES AS CRABTREE, G.E.C., KERSON, M.K, M.E.M.. REVO, SANDERS, SIMPLEX, TENBY, TUCKER, etc., PLUS A FULL RANGE OF CONDUIT, CONDUIT FITTINGS CABLE, FLEXIBLES AND ALL THOSE S M A L L ACCESSORIES ESSENTIAL TO ELECTRICAL THE CONTRACTOR MAKE OUR STOCKS PRODUCTS THE BEST THAT C A N BE O FFER ED TO DEPENDABILITYfor -THE TRADE A/y/ex must be qooc/ f r a n k & GEORGE H. SCHOLES & CO. LTD. /WESTERMAN> Wylex Works, Wythenshawe \ e l e c t r ic a l and rad i «^fa c to r s MANCHESTER 94 DALEeEnd, BIRMINGHAM81? TSA,i Electrical Review, December 27, 1946 jj ■** * * â M IO i

C a S>

7 w / > a 4

It doesn't yet meet the demand — but we are doing all we can to hasten the happy day. There are

VfcU many factors contributing to the continued shortage,

SiEAWEiC but one by one we are overcoming them and CK, ® rets m narrowing the gap between order and delivery. And production is not being achieved at the expense NGE HT PK of quality. In fact, J. & P. have now demobbed )AU TSE SENTI*! 1 “ W ar Em ergency" and reinstated OUI sw full C.M.A. standards — the standards FFEIEDÜ that are acknowledged the world over as the buyer's surest guarantee of . reliability. Decem ber 21, 1946 2 4 E l e c t r i c a l R e v ie w

in the manufacture of... metals such as tungsten, in­ volving reduction processes, hydrogen of highest purity is safely and economically obtained from a Knowles Electrolytic Plant. Hydrogen is guaranteed direct from the cell at a purity of 99-95%, together with oxygen 98-8% pure. Knowles equipment is operating in all parts of the world, in plants from the smallest to the largest sizes.

iffl ELECTROLYTIC PLANT M FOR HYDROGEN G- OXYGEN THE INTERNATIONAL ELECTROLYTIC PLANT CO. LTD., SANDYCROPT, CHESTER

HO.M n,»t December 27, 1946 E l e c t r i c a l R e v ie w 25

p « « c o ^

IO]0 V'S

An important feature in the design of Reyrolle A. C. variable-speed commutator motors enables the end-bracket to be entirely removed without any disturbance of the brushgear.

HEBBURN-ON-TYNE D ecem ber 27, 1946 2 6 E l e c t r i c a l R e v ie w PRAT-DANIEL (STANMORE) LTD.

DALSTON GARDENS, STANMORE, MIDDX.

Makers o f lAMA^ FANS and ^HS DUST COLLECTORS

ANNOUNCE: Don’t keep his nose to THE SUCCESSFUL COMPLETION IN BRITISH POWER STATIONS the grindstone! OF CONTRACTS FOR THEIR While your cutters are at the grindstone they are not pro­ ducing and every time they PATENT require regrinding it slows up output. TUBULAR If your tool regrinding were reduced, your output would be increased and costs re­ duced. M A C R O M E treated DUST COLLECTORS tools do this, because they give a much bigger average IN OPERATION ON output per regrind than similar untreated tools. STOKER FIRED This would give you the following economies : A S W E L L AS (a) Higher output. (b) Reduced outlay on tools. PULVERISEDCOAL FIRED (c) Reduced production cost per unit. BOILERS These savings can be obtained quite simply in two ways : (1) When new tools are re­ quired, we can supply your full requirements already MACROME treated. The high guarantees for efficiency (2) We can treat your own tools. given have actually been exceeded. W rite to us for details.

MACROME WHEN ASKING FOR FURTHER INFORM­ ATION, TEST RESULTS, ETC., PLEASE TitnTeuqii^fToM uttk, (Mid STATE METHOD OF FIRING AND TYPE MACROME LTD. (dept. C.u) ALCESTER OF BOILER OR FURNACE. WARWICKSHIRE ,1) December 27, 1946 E l e c t r i c a l R e v ie w

m m t

SINCERE GQOD WISHES..,: CHRISTMAS and the NEW YEAR

WALSALL CONDUITS LTD ♦ WEST BROMWICH ♦ STAFFS Hcc ember 27, 1946 2 8 Electrical Review u c l

ORMOND ENGINEERING CO. LTD. Head Office and Trade Counter Ormond House, Rosebery Avenue, London, E.C.I. Telephone : Terminus 2888 (6 lines) ; Telegrams : “ Ormondengi, Smith” !

All hands qo f o r ,

ELECTRIC WASH BOILERS Everywhere the demand is for BURCO ELECTRIC WASH BOILERS for the main housing programme. Customers should place their orders now, for forward requirements, quoting the correct W.B.A. Symbol, and specifying the period during which delivery is required. Every effort will be made to ensure supply. Acceptance of orders will indicate the month of delivery. PARTICULARS FROM BURCO LTD • ROSE GROVE ■ December 27, 1946 E l e c t r i c a l R e v ie w

POWER TRANSFORMERS

SIZES UP TO 30.000 kVA

1he BRUSH ELECTRICAL ENGINEERING CO. LTD. LOUGHBOROUGH, ENGLAND. Write for T'uiiicotions FI26 4 FH7 TURBO-GENERATORS, TRANSFORMERS, E.H.T. and M.T. SWITCHGEAR, A.C. and D.C. MOTORS and GENERATORS, BATTERY ELECTRIC VEHICLES and TRUCKS, TRACTION EQUIPMENT, BUS and COACH BODIES BR AN CH ES London, Birmingham, Cardiff, Manchester, Bath, Leeds, Newcastle, Glasgow, Belfast, Dublin. D e c e m b e r 27 , 1946 3 0 E l e c t r i c a l R e v ie w m f < S o . £ h l . W H O L E S A L E *^ LECTRICAL DISTRIBUTORS

AND AT 544/550, LEY ST.-ILFORD • ESSEX VALentine 3461

m f. MEMBERS STOCKISTS OF C.M .A. CABLE & E.L.M.A. LAMPS

o V m e r c u r y s w it c h e s

For instrument work, domestic and industrial apparatus and power control plant. Standard switches available or designed to any individual requirement. Write for catalogue or technical advice.

THE MERCURY SWITCH MANUFACTURING CO. LTD. DAVALL BROS LTD. co m p ton ave. WEST DRAYTON : MIDDLESEX CAN. S 3 6 2 CANONBURY.N.I. Decem ber 27, 1946 E l e c t r i c a l R e v ie w 31

■MOTORS ALTER r. HIGGS MICE LTD BIRMINGHAM 6 ENGLAND

RATIONED OUTPUT The very term and all its attendant dissatisfaction are extremely abhorrent to us. Yet we are com­ pelled in our customers’ interests to resort to these measures to ensure equitable distribution of HIGGS MOTORS, the huge demand for which considerably exceeds current output.

Belfast, Birmingham, Bristol, Dundee, Glasgow, London, Manchester, Nottingham, Peterborough, Sheffield, Wolverhampton. 32 Electrical Review December 27, 1946 FL UORESCENT Light in a NEW setting!

UNIQUE “ PERSPEX” FITTING IN FROSTED PEARL FINISH This unique “ Perspex ” fitting In radiant FROSTED PEARL finish puts Fluorescent Light in a new and beautiful setting that lends itself perfectly to a host of decorative lighting uses. Top is open for maximum upward light ; under part is an open-work scroll in clear “ Perspex ” allowing full downward light. In two sizes, to fit standard 4 ft. or 5 ft. Tube. Designed and made by O ’Connor Electrical Industries Ltd. Write to-day for full details. LIST PRICE (Fitting only) ... £11.5.0 Plus Purchase Tax, £2 . 10 . 0

O ’C O N N O R Dept B„ 79 & 80 PETTY FRANCE, LONDON. S.W.I Telephone: WHITEHALL 4208 (3 lines)

TURNED PARTS

N’ dla. up

Ferrous andNon- Ferrous

BOLTS AND SETSCREWS NUTS, STUDS, ETC. STANDARD SIZE8 FROM STOCK TORMO LTD. ENDERSLEISH GARDENS, WATFORD WAY HENDON, LONDON, N.W.4 Telegrems : "FRAMING, HEND, LONDON " ______Telephone : HENDON 7446-7 WORKS : ENFIELD, MIDDLESEX O E M 7 December 27, 1946 F.i. f.c t r i c a l R f.v if w 3 3

Ground level cleaning and maintenance of public lighting fittings for safety IT S A ONE-MAN JOB with contact gear!

ESI ' 13(81 One man with the Eleco contact gear can service 6 tings in the time 2 or ore men with a tower Sladder can service 1. And I Ait’s safer, too !

Write for full particulars of this Eleco quick, easy | and cost-saving raising and lowering equipment, which is suitable for concrete and steel columns.

ENGINEERING & LIG H TIN G EQUIPMENT CO. LTD., DEPT. W.S., SPHERE WORKS, ST. ALBANS, HERTS. PHONE: 2258/9

k 34 Electrical Review D e c e m b e r 27, 1946 ‘FLEXILANT’ COUPLING

SOLVING TRANSMISSION PROBLEMS

FROM I to1 .0 0 0 h.p. 'FLEXILANT' PA 11 NT No «»JOS BOBBIN TYPE COUPLING i his Flexilant coupling, covering a range from 1 to 1,000 h.p., is remarkable for its simplicity of assembly ; ease of servicing. It accommodates radial and conical mis­ alignment and absorbs torsional shock and vibration. Replacement bobbins can be supplied separately.

W I L L B E

RUBBER BONDERS LIMITED S H O R T L Y e n g i n e e r s in r u b b e r b o n d e d t o m e t a l FLEXILANT WORKS ■ DUNSTABLE • BEDS. ,jV AVAILABLE T K I. K e H o N E D U N S T A B L E B O 3 ■ 1-S KliOTI STOCK R .B .6 I

V ^ H C S r * * /

For sheer value you cannot 'star' a more attractive line to your customers than the BYLOCK "Triplex" cleaner. £ 1 2 . 1 2 . 0 (Plus £3.3.0 Tax) 'Ill-Ill'ELECTRIC LAMP LllUnu Complet» with all accessories Hundreds of bayonet type electric lamps are pilfered 3 710 CE every week because a simple precaution is not adopted. You cannot lock up the pilferers, but ^ ¿g fo e /jf / you can lock up your lamps. BRITISH MADE BY BYLOCt ELECTRIC LTD. S a m p le t o PONDERS END. MIDDLESEX

' C H E C K L O X , ’ 169, Piccadilly, London, W.l Phone : PE Cent 1900. December 27, 1946 E l e c t r i c a l R e v ie w 35

Mechanical and Electrical properties

Ley’s ' Black Heart ’ malleable has a high tensile strength and great ductility coupled with free machinability at high speeds. It is extensively used in many industries where strength and high resistance to shock are needed. In addition, it has a high degree of magnetic permeability with low hysteresis loss. LEY’S MALLEABLE CASTINGS CO. LTD. DERBY

‘itlack Heart' M alleable

m p u t i t - IT S T A Y S

CORNERCROFT (PLASTICS) LTD. A subsidiary of Cornercroft Ltd. ACE WORKS, COVENTRY B 27, 1946 36 E l e c t r i c a l R e v ie w December

FRILLED LIZARD (Cblamy- dosaurus kingii). A peculiar feature of this habitant of Northern Australia, is the frill of skin which encircles its neck. W hen fleeing from a foe, the animal folds up the frill like an umbrella and runs swiftly on its t hind legs. Its power of endur­ ance is limited and it soon turns at bay, with frill again erected and mouth open, to present as defiant an attitude as possible, as shown in illustration They sometimes attain a length of as much as three feet.

but it’s easier to say ENFIELD for all Cables up to 132 kV PAPER ■ R U B B E R • P. V. C.

* ° M r a w m aterial to p e r - e ^ 0 8 * EN FIELD CABLES LIMITED. BRIMS DOWN, M ID D LE S E X W o rks: Telephone: HOWard 2661 . London Offices. Telephone: HOLborn 0591 December 27, 1946 ALLENE l e c t r i c a l R e v ie w 37 DIESEL ENGINE - d r i v e n PUMPING PLANT

HE plant illustrated is installed in the Hatfield Pumping Station of the T Barnet District Gas and W ater Company, and comprises one Allen 4-cylinder Diesel engine developing 250 b.h.p. at 350 r.p.m. and driving, through bevel speed increasing gears, an Allen three-stage well pump. The discharged water is returned to the suction of a force pump (fore­ ground), which is driven through gearing by an Allen 3-cylinder Diesel engine developing 188 b.h.p. at 350 r.p.m.

For a period of 61 W E E K S , between January 1945, and March 1946, the 4-cylinder well pump engine ran continuously, day and night without a stop, while in the case of the 3-cylinder force pump engine, a period of SPECIALISTS IN COMPLETE 57 W E E K S * continuous running, day and night without a stop was achieved between July 1944, and September 1945. In each case, the abnormally long WATERWORKS PUMPING run was entirely due to shortage of staff to carry out the usual routine maintenance. The shut down at the end of these periods was merely PLANT INSTALLATIONS routine for the sole purpose of inspection, and in each case the engine was found to be in excellent running condition.

W e are indebted to the Directors of the Barnet District Gas and W ater Company for permission to use this Information. 38 E l e c t r i c a l R e v ie w December 2 7 , 1 9 4 6 r BRITANNIC \ FOR PAPER MAINS CABLES

For E.H.T. and L.T. paper mains Cables up to and including 22,000 volts. Also Varnished Cambric C.T.S. Colliery Cables for drills and conveyors. And Thermoplastic Cables (P.V.C.) for 250 volt lighting circuits for buildings of all types.

BRITANNIC CABLE

BRITANNIC ELECTRIC CABLE & CONSTRUCTION CO., LTD., iV£R BUCKS • Telephone : Iver 491 • Telegrams: “Britannic, Iver.” • An independent Company December 27, 1946 E l e c t r i c a l R e v ie w 39

W H ICH is W H ICH Y o u KNOW,, t / but do your customers

To follow the “ Safety First ” recommendation, make sure your electrical leads, whether to Domestic Appliances or to Machine Tools, etc., are clearly defined. “ Viskrings” simply slipped over the core-wires and/or the outer casing of the leads do the job and put an end to confusion or doubt.

No Tools required No rubber used Impervious to oil and petrol Indelibly printed Supplied in all colours as well as white Self-fixing Do not increase diameter of lead

. 1

for PERMANENT IDENTIFICATION OF ELECTRIC LEADS 40 Electrical R e v ie w Decem ber 27, 1946

THIS WAS ) To provide a bearing surface between housing and central shaft, allowing con- THE PROBLEM) siderable angular movement.

SELF-ALIGNING, SELF-LUBRICATING BEARING Designed and produced for the Aircraft industry by Miles Aircraft Ltd.

MOULDED IN BAKELITE MATERIAL XIIO 6O (Actual size)I

— solved by moulding in BAKELITE MATERIAL

The shaft and the concave housing were moulded into a solid block, the space between the two being filled with a

graphite-loaded B a k e l it e material. Shrinkage o f the material was so adjusted that the necessary clearance between the bearing surfaces was obtained on cooling. Expensive and time-wasting machining operations were eliminated.

TREFOIL BAKELITE <®> PLASTICS REGD. TRADE MARKS Pioneers in the Plastics World December 27, 1946 E l e c t r i c a l R e v ie w 41

/nsu/a/inp ß eä Js

O r Lionel Robinson & Co. Lto. 3 Staple Inn London, W.C. I

It's hot— all the time! That's because the heating element is housed inside the bit in Complete with 6 ft. the Solon Electric Soldering Iron. Soldering Henley 3-core flex­ is easier ; you get a neater, cleaner job in ible, Solon Irons are made less time. All internal connections are for the following st-ndard housed at end of handle, a way from voltages— 200 220, 230/250. heat. A robust cord grip Illustration shows a 125 watt prevents sharp bend­ standard model. ing of the flexible lead.

SOLDERING IRON for INDUSTRIAL USE M a d * in E n g la n d W. T. HENLEY'S TELEGRAPH WORKS CO, LTD., Engineering Dept. 51 -S3 Hatton Garden, London, E.C.1 Electrical Review D ecem b er 27, 1946

PLEASURE ♦ « •

TO WORK WITH

(r o m p to n

WoOo^lHBLES

CROMPTON PARKINSON LIMITED, ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W .C.2 Telephone: TEMple Bar 59 /1 Telegrams Crompark. Estra’nd, London December 27, 1946 E l e c t r i c a l R e v ie w 43 PAWÛUIP fo r service and safely

The “ AUTOFF.” A n Automatic Switch with Thermal Trips. Also fitted with surge protecting trip coils if required (as illustrated). Single, Double or Triple Poles.

The “ NODARK.” A miniature Single - pole Circuit Breaker from 1 to 15 amperes with instantaneous, time lagged or shunt trip. Household model in Bakelite Case, Industrial model in Metal Case, or Stormproof as illustrated. I SWITCHBOARD INSTRUMENTS 2£ ins. to 8 ins. diameter. Manufactured in accordance with British Standard Specification for First Grade Instruments.

CONTACTORS from 10 amperes to 300 amperes open and enclosed types. Contactors for Welding Plant, etc. A.C. and D.C.

The “ ROCON” SWITCH. A four - position, snap action, unit construction switch. From one to ten 30-amp. blades.

COMPANY LIMITED. I KINGSBURY WORKS, THE HYDE HENDON, N.W.9

OIL CIRCUIT BREAKER Telephone: COLINDALE 6196 up to 660 volts, from 30 amps, to Telegrams: " PO W Q U IP, HYDE, 600 amps. Also Back of Board LO N D O N ” types up to 1,200 amperes. Decem ber 27, 1946 4 4 E l e c t r i c a l R e v i e w

WRITE FOR FULL DETAILS TO ENSIGN LAMPS LIM ITED . p r f R T w DEPOTS: LONDON (N ) : Cla, HM. Busb.,, Wctfcrd Hern. • J- O N T O N (S) : IO K i , H m Kixtnm-on-Ticm.s, S urry . MANCHESTER I : 5} IVbtw urtb St. • BIRMINGHAM 3 : 40 c r 12 S w n u r s Z G L A S G O W C 2 : i l -27 Cudotun Sir,,: . CARDIFF : 50 Bndf, Stmt Jummtr Kcw. December 27, 1946 E l e c t r i c a l R e v ie w 45

T H E F IR S T 10 kV . TRANSFORMER (I50h.p.) EVER B U ILT 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 of to-day. 4

A 40,000 kVA Ferranti Power Transformer of modern design

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

FT70 27, 1946 46 E l e c t r i c a l R e v ie w December

T H E MARCH OF LIGHT

Q ueer EUj& óetA.

t o f u r fupper t&Ckrur uutdUf ..,

today there’s

the wonderful lamp a su s.e . PRODUCT Advt. of The General Electric Co. Ltd., Magnet House, King!icay, London, W C .2 Uty December 27, 1946 Electrical Review 47

^ MORE POWER TO LOCHABER!

Despising all other weapons, the clansman trusted to his claymore and superb swordsmanship

h e old-time history of Lochaber is that of highland clans, highland feuds and the ‘forty-five’. But today the power of this wild and pictur­ Tesque district no longer lies in the claymore ; it comes instead from one of the greatest industrial developments of recent times, which, promoted at a cost of millions of pounds, harnesses the waters of the countryside to generators that give an immense output of electrical power. A new page to highland history indeed ! . . . and one in which it is recorded that an Alton battery has been installed in the hydro-electric station for emergency and other important duties.

ALTON BATTERIES OF MERIT THE ALTON BATTERY COMPANY LTD., ALTON, HANTS Sole Suppliers of Fuller Stationary Batteries Telephone : Alton 2267 and 2268 Telegrams : ' Battery, Alton ’ All 145 *

48 Electrical Review D ecem b er 27, 1946

solves many production SERIES 35 problems MINIATURE MOVING IRON INSTRUMENTS

- P H t i l \ - Provided with clear, open scales 3\" long. Flush pattern moulded cases. W ell damped ; suitable for D.C. & A.C. There are distinct advantages in the use of hot brass stampings up to 100 cycles. Readings independent of wide vari­ compared with rough sand ations in wave form. Movement of spring-controlled, castings. repulsion type with high torque/weight ratio. Ammeters Sometimes machining is elimi­ self-contained to 50 amps ; power consumption does nated entirely by the employ­ not exceed IVA. Voltmeters self-contained to 500 volts; ment of McKechnie stamped power consumption 7.5VA. parts. This may be a reason why “ the MEASURING INSTRUMENTS (PULLIN) LTD other people ” sometimes seem Dept. C Great West Road, Brentford, Middx. Ealing 0011 to be producing quicker, cheaper and even better than you had thought possible. M C K e ch n ie BROS. LTD. ROTTON PARK ST., BIRMINGHAM, 16 'Phone: Edgbaslon 3581 (7 lines) Branches : London — 62, Brook Street, W.l. ’Phone: Mayfair 6182/3/4. Leeds — Prudential Buildings, Park Row. ’Phone: Le.eds 23044. M anchester — 509-513, Corn Exchange Buildings, 4. ’Phone : Blackfriars 5094. Newcastle- on-Tyne—90, Pilgrim Street. ’Phone : Newcastle 22718.

A 4 % December 27, 1946 Electrical Review 49

SINGLE ROW

ENDLESS

- TURNERS CORD ¥ BELTS TURNER BROTHERS ASBESTOS COMPANY LTD. LONDON OfflCL : ^ ^ ROCHDALE• ENGLAND UfR^PAAnTOFSTMC WORLD 50 E lectrical Review December 27, 1946

★ ★★★★★★★★★**** first RADAR

now DISTRENE foil Radar, one of the most epoch-making inventions of this century, would not have been possible without the help of a material possessing a very low power factor, a high resistance to moisture and great dimensional stability. D IST R E N E R e g d . (Polystyrene) was the material that completely met these needs. Power Factor Now, in the change over from war to peace, you have your problems of high-frequency radio and 0-0002-0-0004 electrical insulation. DISTRENE FOIL can help Tensile Strength you to surmount them. 10,000 lbs/sq.in. In DISTRENE FOIL (Orientated Polystyrene Thickness Film) the molecules are specially arranged during manipulation so that the tensile strength is in­ 0 001' to 0 008T creased by 3 times and the flexibility by io times.

★ ★ ★

BX PLASTICS LTD larkswood works • LONDON ■ E.4 Telephone: Larkswood 4491 Branches: King Street Buildings. I Ridgefield, Manchester 2. Telephone: Manchester Blackfriars 0258. 42 Wellington Street, Sheffield. Telephone: Sheffield 25517 Works: London, Manningtree and Dundee

T A Y LO R 1 66 December 27, 1946 E l e c t r i c a l R e v i e w 51

If starters

trere tike rabbits If starters could reproduce themselves the present heavy demand lor M.E.M. motor control gear would be met without delay. But as it is, labour, material and extensive planning are needed. Yet in spite of shortages, controls and restrictions, supplies from the M.E.M. Factory are being steadily increased and goods are going out as quickly as possible to the whole­ salers. Their’s is the job of distribution and they are doing it magnificently in allocating all available goods fairly and equitably. So keep in touch with your wholesaler and he will see that your needs are met as quickly as supplies permit.

MIDLAND ELECTRIC MANUFACTURING CO. LTD., TYSELEY, BIRMINGHAM, 11 SWITCH, FUSE AND MOTOR CONTROL GEAR, ELECTRIC FIRES AND LOCALISED LIGHTING EQUIPMENT

London Showrooms & Stores: 21-22 Rathbone Place. W .l : Manchester Showrooms & Stores: 48-50 Chapel Street.Salford, 3

C 5 2 E l e c t r i c a l R e v i e w D e c e m b e r 2 7, 1946

METROVICK FRACTIONAL MOTORS are ideal for unit heaters, small pumps and fans used in heating, ventilating and air conditioning plants. This company, as a result of years of research in the reduc­ tion and elimination of noise in electric motors, can offer a motor con­ forming to the highest possible standards of QUIET RUNNING

'.MOTORS

The photograph shows a Metrovick quiet-running Fractional Horse-power motor driving an Oil Burner. |/Q SOI ELECTRICAL REVIEWManaging Editor : D e c e m b e r 27, 1946 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor : Contents :— C. O. Brettelle, M.I.E.E. J. H. Cosens Page Page EDITORIAL—All-Purpose Electricity 1045 NEWS SECTIONS — A R T IC L E S — Personal and Social, 1057 ; Parliamen­ Reducing Farming Costs 1047 tary, 1066 ; Commerce and Industry, Industry and the House. By F. J. 1067 ; Electricity Supply, 1071 ; Erroll, M.A., A.M.I.E.E., M.P. . 1053 Financial, 1072 ; Contracts, 1083. Railway Claims. By Graham Saville . 1077 VIEWS ON THE NEWS . . 1056 PAPERS AND ADDRESSES — CORRESPONDENCE . 1060 Production and Export . 1060 Pulverized Coal Firing . . 1063 Motor Inquiries ; Heat Pumps ; Switches in Bathrooms. REPORTS- ELECTRICAL INVESTMENTS . . 1075 Transformers in Germany . 1050 Simon Report Rebutted 1051 NEW PATENTS .... 1079 New Stockholm Trams 1052 FORTHCOMING EVENTS 1080 Ordnance Factory Conversion 1059 Boiler Plant ..... 1061 RECENT INTRODUCTIONS . . 1081 E.D.A. Activities .... 1062 Safeguards Against Fire 1064 The Power Situation 1065 Classified Advertisements .... 59 E.I.B.A. Home ..... 1066 Index to Advertisers ..... 74

EDITORIAL, ADVERTISING & PU BLISH 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.”

KflnCDS’ TYPE ELECTRIC HAMMER The lighter ttammer /rcr the Lighter fo t

The new 'S' Type Kango Electric Hammer has been introduced to fill an essential need for a light yet powerful hammer designed to stand up to hard and continuous wear. The most importantfeatureis that because of its light weight it can be used for all ceiling work where the larger and heavier hammers may be too cumbersome for the workman to operate. For the electrician and maintenanceengineerthishammer is particularly useful for all Rawlplug and similar work, its speed In drilling is phenomenal having regard to its light weight. The hammer can also be used for light cutting away, hacking, brick raking and boiler scaling, etc.

K R n C O £ tec trie H am m ers L t d . MORDEN FACTORY ESTATE, LOMBARD ROAD, LONDON, S.W.I9.

R.P.I056A D e c e m b e r 2 7, 1946 54 E l e c t r i c a l R e v i e w SYNCLOCK TIME INTERVAL METERS For Trip settings, Relay Testing and automatic ill measurement of timing periods. INDUSTRIAL MODEL

PRECISION MODEL. Measures time intervals from I/20th of a second up to 10 seconds. Accuracy I/100th of a second. INDUSTRIAL MODELS. I. Measures time intervals from I/5th of a second up to 5 minutes. Accuracy I/2.0th of a second.

I I . Measures time intervals from I second up to 30 minutes. Accuracy ^ of a second.

Hand or electrical resetting on Industrial models.

EVERETT EDGCUMBE COLINDALE WORKS LONDON, N.W.9 Telephone : COLINDALE 6045

Manufacturers of all kinds of indicating and recording electrical instruments. Photometry experts ELECTRICAL REVIEW THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXIX. No. 3605. DECEMBER 27, 1946______9d. W E E K L Y

A1I-Purpose Electricity>'-1TECH,i'K', Countering Retrogressive Proposals r|AWO reports published this year under seems no good reason for asking them to M Government auspices have made a make the attempt when a better and serviceable addition to the information proven alternative already exists in com­ generally available on the use of heat plete electrification, requiring for the for all domestic purposes. The first— purpose under discussion only the granting the “ Egerton” Report—was, in effect, the of facilities for the construction of gen­ work of a fact-finding commission: the erating plant and electrical equipment of second—the Simon Report—sought mainly all kinds. Moreover, any expectation that to canalize the data presented in the improved solid fuel appliances can be earlier Report, to define the objectives of a mass-produced inexpensively seems to be national domestic fuel policy and to negatived by the warning given in the recommend how the latter could best be Egerton Report regarding the effect of the carried out. While further investigations varying constituents of coal in different and developments with time may prove parts of the country. some of the data to be based on incomplete information, the general aims—the need Pre-Electric Ideas for improved standards of heating, lower A principal weakness of the Simon costs, greater convenience, fuel economy proposals is that, although drawn up with and smoke abatement—are just those that a view to meeting the housing urgency, electrical engineers have always done their they have little to offer that promises best to further. immediate appreciable betterment of the admittedly unsatisfactory methods of solid- Distant Prospect fuel combustion. They formulate what is The means recommended for fulfilment essentially a long-term programme that of these admirable ideals are a very harks back to pre-electric days. The different matter. The Simon Committee, relegation of electricity generally to inter­ which included no electrical engineer, mittent and subordinate duties appears to argued the case of those who hold that the be out of harmony with the view expressed end may best be achieved by saddling the by the Minister of Fuel and Power that public in perpetuity with myriads of cheap electricity should be abundantly individual solid-fuel systems. These, it is available to all, since such a course would hoped, could be developed within the seriously prejudice the economics of its next twenty years to consume smokelessly production and distribution. the 50 million tons of bituminous coal Mr. Shinwell has also referred to the (out of a total of 62 million tons) burnt desirability of avoiding wasteful over­ annually in homes at upwards of twice lapping of different services. While elec­ the present thermal efficiency. tricity, as the rising tide of public favour While it would be rash to set limits to makes evident, need not fear competition, what engineers could do in this way, there it can justly claim, as the Memorandum D e c e m b e r 2 7, 1946 1046 E l e c t r i c a l R e v i e w of the Electricity Supply Joint Com­ to the increase in actual expenditure on mittee and E.D.A. states (summarized in frequency standardization over earlier this issue), to be the only agent that is provisional estimates illustrates how costly capable of being the sole medium for may be delays in carrying out measures of providing all domestic services. The standardization (e.g., of voltages) even views we expressed in commenting on the though their desirability is accepted. two Reports at the times of their publica­ tion have gained in cogency in the light of N o t h in g can be done Mr. V. Z. de Ferranti’s presidential address “ Super- to avoid the next two to the LE.E. Domestic heating require­ Priority ” winters being as bad and ments would be far better met by burning probably worse than the low-grade coal in power stations than by present one in regard to electricity supplies. isoint tinkering with obsolescent small fireplaces Mr. Harold Hobson, chairman of the '[a® that would still require selected fuels. Central Electricity Board, declared, how­ i i i l ever, last week that it would be possible At last the threatened to prevent the shortage extending into The Electricity measure for the nationali- 1950 if “ super priority ” was given to *11 Bill zation of electricity supply generating plant for labour and materials. has been launched ; it was As we have repeatedly emphasized, this introduced by Mr. Shinwell last Friday. priority must be given if the country’s At the time of going to press the text was progress along the road to recovery, not available but the extended title of the industrial expansion and a higher standard Bill foreshadows a “ British Electricity of living is not to be impeded. Exports Authority” with area electricity boards, represent only about 10 per cent of the one of which will be North of Scotland total production and if restricted or banned Hydro-Electric Board. Existing supply would, in view of the competition from undertakings’ “ property, rights, obliga­ other countries, certainly be very difficult tions and liabilities ” will be transferred to to resume when the present shortages at the Authority or boards. Further interest home have been overcome. In any case lies in the proposals to “ amend the law the banning of exports would produce no relating to the supply of electricity, to immediate benefit here. So much of the make certain consequential provisions as work on power stations is civil engineering, to income tax.” that it would probably be at least two IS1 years before any effect of the ban would muni S om e conclusions to be become noticeable. Boiler drawn from the research a a pin Availability activities of the Boiler A t a recent meeting of Availability Committee Farmers and the Warwickshire branch mm have been issued as an Interim Report, Nationalization of the National Farmers’ stricl particulars of which are included in this Union a speaker advo­ . p issue. This Report is a digest of much of cated nationalization of electricity supply ncont the matter discussed at the recent “ Fuel to get over a situation in which there was ilG. and the Future ” Conference, particulars “ one law for the townsman and another of which were published by us on October for the countryman.” He thought that 8 Ms 10th, and has an immediate bearing on no capital charge for the supply of elec­ present problems. It should be read in tricity should be made to the farmer. conjunction with the paper on pulverized- We wonder if he has ever tried to get a Wei fuel firing by Mr. C. H. Sparks, summarized telephone from a nationalized service teap in this issue. without paying for the necessary extension. m W h e n coal can be These repeated demands for electricity at Cost of regarded as a store of somebody else’s expense really invite a soce Delays raw chemicals and not tu quoque in the form of advocacy of principally as a means to the nationalization of the farming industry. raise steam or to warm buildings, it will This is very seldom suggested although greatly accelerate the maturing of the food is as important as electricity and electrical era, which really began, Mr. might be cheaper than it is considering the sq E. R. Wilkinson suggested at Liverpool, heavy subsidies which are paid for it. Krai with the part played by the grid in making Why should the consumer have to pay for electricity generally available. His reference its cartage to the markets ? à

December 27, 1946 E l e c t r i c a l R e v i e w 1047 01 Reducing Farming Costs Electrical Methods in Northamptonshire HOUGH greatly increasing numbers of 15 per cent being due in each of the winter T farmers are beginning to “ see the light ” quarters and per cent in each of the in regard to the adoption of electricalsummer quarters. The r.v. for even quite a methods, far too many still look on electricity large farm is rarely above £20, so that this as desirable but outside their reach financially. annual charge is generally well below £10. In point of fact under present-day conditions In addition there is a kWh charge of fd. no farmer who wishes to be successful can All accounts are subject to a discount of 5 afford not to take full advantage of the per cent for cash. The restrictions relating facilities offered by electricity to increase to use of extra large sterilizers and production, to reduce labour costs, and to motors are not important and were really included in the tariff as a safeguard against apparatus that was not of a truly farming nature. Few farm sterilizers take more than 6 kW and since the introduction of the “ Essex ” mill there are few mechanical duties for which a 3-H.P. motor is not adequate. Altogether about half a million kWh was consumed last year under

Nearly 150 “ Essex ” mills have been installed. Here is one mounted on a trailer for demonstration purposes obtain a better price for his produce by improving quality. A visit we recently paid to a number of farms in the Northampton Electric Light & Power Co.s’ area provided strong evidence of this and also supported the contention of Messrs. W. D. Kennedy and G. O. McLean (see Electrical Review, August 9th, 1946, page 215) that this country has little to learn from the American Rural Electrification Administration with regard to adequate and cheap supplies of electricity. Under the R.E.A. tariff a typical farmer pays approximately 2-2d. per kWh for his energy. The average price paid under the Northampton Company’s farm tariff is only just over a penny per kWh, several consumers actually getting their energy at little more than fd. This special farm tariff, which was introduced in 1932 and has now been adopted by nearly 900 of 1,500 farms in the company’s 800 sq mile area, covers supplies for all Examples of 16,000-egg incubators installed at general purposes except motors over 3 H.P. Turney Brothers’ farm and dairy sterilizing equipment exceeding this tariff, the availability of which may be 6 kW. A fixed charge of 45 per cent is paid said to be responsible largely for the extensive on the net rateable value of the farm house, use made of electrical equipment for bona fide D e c e m b e r 2 7, 1946 1048 E l e c t r i c a l R e v i e w farm purposes. This is not an area where has shown that this is a very promising field “ farm supplies ” consist of a few lamps and of application of electricity to farming a radio set. With a very few exceptions all processes. The experimental plant has been but the smallest of the dairy farmers have installed at Turney Brothers’ farm at Quinton, electric milking machines, while there are which is also of especial electrical interest now about 200 sterilizers in use as well as for many other reasons. It is one of the large numbers of electrically operated pumps, largest and most extensively equipped in the corn grinders, chaff cutters, thrashers, milk area and its 70-kW connected load covers a coolers, cold rooms, incubators, brooders, 25-H.P. hammer mill, 10-H.P. thrashing saws, etc. In the farmhouses, too, electric machine, 1-H.P. winnowing machine, cookers, water heaters, refrigerators, washing 5-H.P. mixer, 2-H.P. cake breaker, 2i-H.P machines and vacuum cleaners are quite root cutter, Alfa Laval milking machine commonplace. (two 3-H.P. motors, one as standby), 1-H.P. The company is particularly receptive to hoist, 3-H.P. grain elevator, two 3-H.P. new ideas and was one of the first to appre­ straw and grain elevators, two 3-H.P. pumps, ciate the possibilities of the 3-H.P. “ Essex ” four 16,000-egg incubators (6 kW each), ten mill. Nearly a hundred and fifty of these electrically heated brooders (380 W), 3-H.P. remarkable units have now been installed in poultry-food mixer, 1-H.P. tyre compressor, and a refrigerator, clocks and domestic apparatus. In addition a 10-H.P. plate mill is just being installed. A 100-kVA transformer provides the 230/400-V, three-phase supply and the metalclad switchboard installed is probably the largest we have seen on a farm, being of the type usually to be found in a small factory. The p.i.I.e.a. 4-core cables are taken in 6-in. ducts to the main points in the

Milk cooler at Galley Lane Farm, Bletchley buildings. For this comprehensive range of electrical facilities this farm, which has a rateable value of £22 per annum, in a typical year (1943) con­ sumed 57,814 kWh and received a bill for £217 13s. 7d. After allowing for the 5 per cent discount the average price paid per kWh works out at 0- 86d. An even lower average price has been achieved at Mr. R. Barbour’s Galley Lane Farm, Bletchley. Here for a the area and to demonstrate their operation herd of about a hundred Ayrshire cows in on site one of them has been mounted on a milk use is made of a milking machine, trailer. In view of the difficulty of getting sterilizer, electrode boiler (20 kW), and a or making up bins for feeding the mills, the milk cooler as well as cattle food preparation company has also made up considerable plant and domestic appliances. The premises numbers of these out of corrugated iron, have a rateable value of £18 and in last June which unlike sheet metal, has been readily quarter the cost for 10,512 kWh was only obtainable. £33 6s. 5d., which, after the 5 per cent discount, Besides having installed a number of grass- represents an average charge of only 0-73d. drying plants, the company has recently been Even when consumption is quite small the co-operating with the British Electrical and average price paid per kWh is remarkably Allied Industries Research Association in low. With an unusually high rateable value experiments on hay finishing, and, although of £22, Mr. J. W. Shirley, of Pear Tree it is too early to draw final conclusions from Farm, Woughton, who used 1,451 kWh in the results obtained, the preliminary work the June quarter for his “ Essex ” mill, f

December 27, 1946 E l e c t r i c a l R e v i e w 1049 milking machine and a 6-kW sterilizer, paid week were previously entered on the cost only 0-98d. per kWh. With a still lower sheet for grinding. consumption (only 213 kWh) Mr. E. Dunker- Besides the mill, Capt. Jones has one of ley, of the Old House, Staverton (rateable the most compact dairies we have seen. To handle the milk from his sixteen cows there is a Manus milking machine, a 15-gal water heater (1,500 kW) and a 6-kW sterilizer. A novel feature is that access to the sterilizing room from outside the building is discour­ aged by having the entrance from the dispatch room just large enough for a man to pass through, though of course of ample size for cans, etc. With a rateable value of £10, the cost for the 3,498 kWh consumed in

Compact water-heating and steriliz­ ing plant arrangement at Capt. C. Jones’ farm, Stoke Goldington value £8), paid 1-33d. Milking only about the June quarter of this year was £11 13s. 6d. a dozen cows Mr. Dunkerley does not less discount, or 0-76d. per kWh. consider the installation of a milking machine This installation, like practically all in the as an economic proposition but he has an area, has been carried out by the company’s electric sterilizer, a bottle washer and an own Installation Department. Complete “ Essex ” mill. Incidentally he uses the schemes are prepared and carried out and mill to grind for fifteen other farmers in the the company has the services of an agricultural district, having laid out the bin and tubing engineer, Mr. Arthur P. Crooke, who, being arrangements to facili­ tate reception of the grain and dispatch after grinding. Another novel arrangement of an “ Essex ” mill is to be found at the Old Park Farm,Stoke Goldington, where Capt. Clifford Jones has taken the out­ let tube direct to a receiving hopper in the cow byre. Capt. Jones says the mill has paid for itself in eight months. Apart from

Gascoigne auto-recorder milking plant just installed at Mr. W . H. Jones’ farm, Staverto n the fact that it costs about 12s. 6d. a ton for a farmer himself, and is still running a small ■ grinding elsewhere he reckons that using an farm in his spare time, is well qualified to ri&t “ Essex ” all the requirements of the farm advise on agricultural matters. One of the ^ . can be met with only half an hour’s attention most recent schemes for which the company by a farm hand a week. Eight man-hours a has been responsible is nearing completion 1 pi

1 D e c e m b e r 2 7, 1946 1 050 E l e c t r i c a l R e v i e w at Mr. W. H. Jones’ Vine Tree Farm at spread over five years while in the case of Staverton. Here a completely new building new connections guarantees of consumption is being erected to accommodate a herd of are required only for the larger installations. fifty Friesians. Fluorescent lighting is pro­ Apart from the normal farm advisory vided throughout, and the milking parlour service, special demonstrations of equipment with its Gascoigne auto-recorder for eight are given from time to time at the county cows is warmed with tubular heaters. There agricultural shows, as well as at the company’s is a water heater for washing hands and an main showrooms. electrode boiler is on order. It speaks well for the company’s methods At the moment farm installations are being that not once during our tour did we hear undertaken at the rate of about two or three anything but praise of the facilities offered. a week. Each application is carefully studied Far from complaining that electricity is still with a view to giving the maximum service too dear, the farmers we spoke to boasted and efficiency, with minimum cost, both of the smallness of the accounts they had capital and operating. Special attention is to pay. paid to the elimination of as much manual We thank Mr. E. G. H. Jackson, general labour as possible, a feature which has a manager of the company, for giving us strong appeal to the farmer to-day in view facilities to visit the farms, and also Mr. J. B. both of the difficulty in obtaining farm hands Wilson, sales manager, Mr. A. P. C. Crooke and also of the rising wages. Apparatus of and the various farmers, for their help in all kinds is available on hire-purchase terms the preparation of this article. Transformers in Germany Report of Investigating Committee ¥ N a series of reports, some of which have 96-6 per cent quoted for a German transformer. been reviewed in this journal, the Intelligence For a 1,000-kVA transformer of the same ratio Objectives Sub-Committee has dealt with the the corresponding figures are 98-55 per cent German heavy electrical industry. The subject and 99-1 per cent. Butt-joint yokes appear to of “ Item No. 31 ” is “ Motors and Power be used in Germany, but have not been British Transformers ” (Stationery Office, 3s. net), practice for many years, interleaved yokes giving which records the results of visits to five large less reluctance in the magnetic circuit. works. Owing to war damage some of the It is stated that the use of “ corrugated fins information “ had to be obtained by verbal arranged all round the periphery of the tank discussions, which cannot be relied upon without . . . is considered superior to that . . . with reservations.” tubes or pipes ” and “ the tube cooling method Some of the reservations necessary will be is only used on very large units about 15,000 clear from perusal of the transformer section kVA, and this to a limited extent.” Corrugated in particular. For example, it is stated that tanks were discarded in this country over twenty flux densities of B = 16,000 to 24,000 lines per years ago in favour of tubular tanks which give sq cm were used in Germany. Stalloy is a higher cooling area. The height o f a corru­ saturated at approximately 20,000 lines, and a gated tank is greater than that of a tubular tank transformer designed with B approaching this for the sam e output, and more oil is required. figure would quickly burn out. No sheet steel Elliptical tubes do not increase the range of capable of being used at B=24,000 is known in dissipation of heat per unit area of surface; this country or in America, where B normally they enable a given length of tube to be does not exceed 13,500. The losses in watts “ nested ” in a smaller space, which, however, per kg given at B = 10,000 show that the steel reduces effective radiation. The recurrent- mentioned is inferior to British steels and does surge generator is not new and has been in use not justify the claim that “ German practice in this country for some years. seems to be a little ahead of others.” The permissible temperature rise of 60 deg C is stated to be “ enormously high on the basis N.A.L.G.O. Branch Meeting.—The Central of standard British Specifications,” but this London Electricity Branch o f the National figure (if it relates to resistance) has been used Association of Local Government Officers, in B.S. 171 since 1936. A current density of which was among the first to be formed by 2,400 A per sq in. seems very high for ON a public utility company, held its annual transformers. general meeting on December 9th. Since the The efficiencies given should be related to formation of the branch eight months ago voltage. The TMA standard losses for a membership has grown rapidly and the branch 100-kVA transformer for 11,000/400 V give a now represents approximately 80 per cent of the full load efficiency of 97-5 per cent against eligible staff. December 27, 1946 E l e c t r i c a l R e v i e w 1051 Simon Report Rebutted Electricity the Only All-Purpose Medium

• M E M O R A N D U M on the Report of the in all rooms of small houses. Between 1929 and Fuel and Power Advisory Council (Cmd. 1939 the average domestic price was halved, 6762) on Domestic Fuel Policy has been drawn while the number of electric cookers increased up by a committee appointed by the Electricity from 50,000 to 1,750,000. Supply Joint Committee and the Electrical The objectives of the Simon Report are the Development Association. After citing the first same as those of the electricity supply industry reference of the Advisory Council, which was (namely good standards of heating, low costs, set up under the chairmanship of Sir Ernest more convenience, national fuel economy and Simon by the Coalition Government in Novem­ smoke abatement), subject to revision of its ber, 1944, to consider the efficient use of fuel in recommendations in the light of the foregoing domestic and similar premises and the prevention observations. Since electricity is the only of atmospheric pollution, the Memorandum medium which can be used as the sole source refers to expressions of Ministerial views since of all domestic power, heating and lighting, the Report was presented on January 17th last. it is urged that, subject to the preservation of At Blackpool in June, the present Minister individual choice, the industry and the Govern­ of Fuel and Power, Mr. Emanuel Shinwell, put ment should combine to ensure the widest use first the provision of electricity to all as cheaply of electricity for all domestic purposes at an as possible and gave as one of his primary economic price. The Committee holds that objectives the integration of all forms of power while the nature of the supply of electricity and the avoidance of overlapping. In the same into residences will remain unaltered for all month the Ministry of Health commended the foreseeable time, the methods of producing, attention of the Simon Report to all housing distributing and using it will improve and that authorities, requesting that each estate should housing policy, therefore, should not be com­ be supplied, if practicable, with both electricity mitted to a system of heating that may shortly and gas. In July the Department of Health become out-of-date. for Scotland sent out a similar communication. Counter-Proposals In view of the increase in expenditure entailed in providing electricity, gas and solid fuel, the Comments upon the recommendations of the present Committee suggest joint consultations Simon Report follow. The use of solid fuel between the Ministries concerned and the should be minimized to avoid cost of transport, electricity supply industry before any such action refuse disposal, domestic labour, internal is taken. decorations, material deteriorations and atmos­ pheric pollution. Electric heating appliances Committee’s Formulae Challenged should be developed on a mass production basis The formulae used in the Report in arriving to minimum standards, the Government in at efficiencies (derived from the “ Egerton consultation with the electricity supply industry Report,” Ministry of Works Post-War Building being responsible for ensuring proper testing. Studies No. 19) and the conclusions based on Codes of Practice that insist upon a general use them are challenged. It is pointed out that the of solid-fuel appliances are not acceptable; the trend of public opinion is indicated by the annual use of such appliances as a condition of subsidy, increase in electricity supplied for domestic whether for new or old houses, or their free heating (which includes water-heating, cooking issue is deprecated. The Committee accepts and auxiliary services). This advanced between central heating as the main means of heating 1921 and 1941 from 564 million to 9,874 million blocks of flats or large houses, but holds that kWh. In 1943 the Standing Joint Committee the recommendation regarding the use of avail­ of Working Women’s Organizations found that able supplies of smokeless fuel in individual “ electricity is first choice for cooking with a houses and of bituminous coal in central plants majority in every area.” The next year an should not be acted upon without investigations inquiry instituted by the Scottish Housing into modern developments. It does not accept Advisory Committee showed substantial majori­ the proposal that the main winter space- and ties in favour of electric booking and space water-heating load should be taken by solid heating, leading to a recommendation that fuel, in view of the greater costs of construction socket outlets should be installed in all rooms of premises and transport and handling of except the bathroom. In Hull 80 per cent of fuel and the atmospheric pollution this would prospective tenants of council houses preferred entail. Electricity is fundamentally an all­ electricity for the same purpose. This trend is purpose agent and when so used affords maxi­ particularly noticeable among younger women. mum benefits in price and service. Further, the Housing Manual (1944) issued by No objection is raised to free competition the Ministries of Health and Works recom­ with other fuels over the whole range but only mended the provision of a 3-kW socket outlet to its limitation to a sphere which would lessen 1052 E l e c t r i c a l R e v i e w December 27, 1946

the benefits obtainable with free competition. supply heating appliances should not be Any division of load between different fuels restricted to solid fuel, but the suggested would also militate against the furnishing of provision of electric points in the main rooms supplies in rural areas, since this depends upon is supported, and attention is drawn to the the development for all purposes throughout considerable saving through the elimination of the country. flues; ventilating systems could, it is believed, The Simon recommendations regarding solid be provided at lower cost. Where electricity is fuel would prevent free competition between available, the solid-fuel store recommended electricity and gas, the prices of which are already in the Report would be unnecessary. regulated by the Ministry of Fuel and Power Information centres, which already exist, in consumers’ interests. The industry, it is should remain the responsibility of the industries stated, would strongly object to any outside concerned, possibly with some co-ordination, authority having jurisdiction over prices as a and should not be established by the Govern­ basis of competition and would disagree with ment; their function should be explanatory in the method of assessing electricity supply order to prom ote healthy competition and ensure tariffs set out in an appendix to the Report. a free choice to consumers. While it is held that only by the most extensive The establishment of smokeless zones is not electrification can the prescribed standards of regarded as practicable and the need for them heating be provided at “ lowest possible cost,” would disappear under electrification. The objection is not raised to a flue for solid-fuel target aimed at in the Report of replacing in appliances in the living room but to the limiting twenty years the 50 million tons of bituminous of the means of heating by electricity or gas coal now burnt at a working efficiency of 20 per elsewhere to one bedroom, which is contrary cent by smokeless methods having a coal to codes suggested by other Departments. The economy of 40 per cent is considered to be out­ proposed obligation on the building owner to dated already by the possibilities of electrification. New Stockholm Trams Modernization and Extension Scheme

¥ N view of the gradual abandonment of tram- and weighs 17 tons without passengers. The ways in London it is of interest to learn four 70-H.P. motors give it rapid acceleration that the system in another capital, Stockholm, and a maximum speed of 60 km per hour. The interior arrangements are com fortable and tasteful. Some of the standing pas­ sengers are accommodated in the aisle between the rows of seats and others on the rear platform. A separate cabin is provided for the driver, the vehicle being de­ signed for passing round a loop at termini. Six pneumatically-operated doors are provided to facili­ tate loading and unloading and the stops are announced through loud-speakers by the driver. There are also illu­ minated stop indicators. The ventilation system effects a complete change of air every two minutes. So far twenty of these new One of the new Stockholm trams trams have been put into service; a further seventy are is being extended and modernized. One feature still under construction. The cost o f the vehicles of the modernization is the introduction of a is said to be about £9,650 each. new type of tram which we are able to illustrate by the courtesy of the Anglo-Swedish Review Municipal Radio. St. M arylebone Electricity (published by the Swedish Chamber of Com­ Committee reports that it does not contemplate merce in London). the sale of radio and television sets as there are This is a single-deck vehicle accommodating many firms m the borough dealing with such 104 passengers (70 standing). It is 52-6 ft long equipment. 27, 1946 December E l e c t r i c a l R e v i e w 1 053 Industry and the House Electricity Supply and Transport ERHAPS, by seeking in each of these “ inevitable that some of the fuel supplied P fortnightly articles a main theme should be of poorer quality than formerly.” linking the diverse Parliamentary referencesNo improvement in the quality could be to the electrical industry, I am straining looked for, he disconsolately added, where­ unduly to force a series of fragments into an upon Mr. Thornton-Kemsley leapt in with a unreal pattern of unity. Even if that is true, suggestion as ingenious as it was imprac­ however, I still believe the attempt worth ticable. Why not, he asked, import supplies making. Parliamentary discussions are a by submarine cable connecting Norway with current index of the importance which these the North-East of Scotland ? “ No, sir,” various issues are assuming in the public was the Minister's brief but clear reply. mind—they indicate where the shoe is Giving details of cuts, Mr. Shinwell said pinching, and how successful we are as a that since November 1st the C.E.B. had nation in cutting any particular suit according found it necessary on eighteen days to issue to our very limited cloth. instructions to undertakings to shed 5 per In writing “ finis ” to Parlia­ cent or 10 per cent of its load ment in 1946 my opening By F. J. Erroll, for periods averaging about half subject will be the generation of M.A., A.M.I.E .E ., M.P. an hour. All seven areas into power, and I will conclude with which the Board divided Great a - survey of the great clash on transport Britain had been affected, but the districts nationalization. Listening to the ebb and flow most affected were the Midlands and South- of discussion at question time these last two East. Reduction of load, he pointed out, weeks I have been struck by the repeated did not necessarily involve cuts in electricity references to power generation. Perhaps it is supplies. In many cases the strain was the shedding of load that has prompted the lightened by a reduction in voltage; in outburst; perhaps a preliminary lining up of other cases large industrial consumers, on facts and forces for the debate on supply receiving an intimation, transferred part of nationalization; perhaps even the issue by their load to off-peak hours. the Conservative Political Centre of a Ultimately, of course, it is a question of timely and aptly titled booklet on “ Power.” increased plant, and in details of progress the Maybe all three have played a part. House is constantly interested. Mr. A. M. F. The question of cuts was revived by Mr. Palmer, formerly on the staff of one of the H. D. Hughes from the Government benches, power companies and now M.P. for Wimble­ and the Minister in his reply stressed that the don, asked for steps to be taken to reduce present shedding of load was due to shortage the delays in obtaining consent to the building of generating plant, which was insufficient to of new power stations. The Minister’s reply meet peak loads on the public supply system. was little more than formal: “ Close con­ It did not arise from shortage of coal. sultation is already taking place between the Perhaps this insistence that coal supplies Departments concerned, which it is hoped were not to blame was yet another example will expedite the issue of the formal statutory of Mr. Shinwell’s now famous inconsistencies. consents required under the Electricity For only a week earlier he had conceded to Supply Acts and Town and Country Planning Major P. Roberts that the quality of coal legislation.” supplied for the purpose of generating was More specific in character were references not all that could be desired. Major Roberts to Manchester and Neasden power stations. had referred to the C.E.B. statement that an The former city is to have a new station at occasional reduction of the load was caused Carrington in Cheshire adjacent to my own by a regular loss of about 300,000 kW due constituency, and Mr. Shinwell was asked to to inferior quality fuel delivered to power say what provision was being made to utilize stations feeding the grid. What action, the the waste heat for houses and other develop­ Minister was asked, was he taking to improve ment works. Particularly it was suggested the quality and overcome the difficulty? that some arrangement should be made to Mr. Shinwell in turn blamed the increased supply such heat in the Urmston locality consumption, which had caused it to be where the local authority had been authorized D e c e m b e r 1 054 E l e c t r i c a l R e v i e w 27, 1946 to carry out a district heating scheme, and licensing, making it necessary for them to for the important industrial extensions in manufacture in this country. hand at Carrington and Partington near the Denying that it was the intention of the site of the proposed new station. Through clause under discussion to make dollar Mr. Shinwell, the Electricity Commissioners, investment in Britain difficult, the Solicitor- the responsible authority, replied that no General said there was no objection to the proposals had been submitted by Manchester process in principle, “ but each case must be Corporation. considered on its merits, in order to see whether it is in accordance with the national Neasden Coal to Oil Conversion interest.” How such investment might fail The Neasden inquiry concerned a fuel oil to accord with the national interest was in no conversion at the L.P.T.B. power station. way clearly or satisfactorily defined. Perhaps The Minister of Transport, asked why he Mr. Cobb’s warning was being borne in had approved the change-over, said it was mind. The whole issue, I feel, needs more not a matter for which his approval was careful examination, followed by a frank necessary. Mr. Barnes gave the estimated discussion. additional operating cost as approximately i'45,000 a year on the basis of existing prices Shortage of Steel for coal and oil fuels, and added that the A general sense of frustration must measure was to be regarded as a permanent unfortunately persist in the electrical indus­ one. Questioned on the same subject, the tries during the present marriage of exhorta­ Minister of Fuel said the conversion was a tion and short supplies. How many electrical matter of expediency to ease the coal position. firms, I wonder, have had the experience It was impossible to predict the exact effect related by Mr. E. H. Keeling, who drew on operational efficiency, but no great change attention to posters urging greater output was likely. which had been sent to a company whose It is my impression that the Minister of raw materials and coal had been cut to an Fuel himself pressed for this change, and extent that made it impossible to respond ? that the L.P.T.B. acceded to the request Steel sheet continues to be one of the supply because, being in a monopoly position, it problems of the industry, and there was would' be able to pass on the additional cost little comfort in the reply of Mr. Wilmot to to the transport “ consuming ” public. If I a challenge from Mr. W. N. Warbey (on the am right in this analysis, it is the first example Government side of the House) to say what of what may prove a regular practice: the steps were being taken to stimulate an dictation to owners of electric power stations increase in the output. by a Government Department of the fuel to Until the proposed new continuous strip be used. mill comes into operation, replied the Minis­ ter, the problem was primarily one of attract­ Foreign Capital for British Industries ing more labour to the older handsheet mills Light from a new angle was shed this which were “ concentrated ” during the war. fortnight on another subject I have previously Special arrangements had been made by the reviewed. It may be remembered that Mr. industry for the training of new entrants and F. A. Cobb, in the debate on the Ministry of for the payment of a bonus above the un­ Defence Bill, warned that foreign capital in skilled rate to trainees retained in the industry. British electrical firms might remove the Production from the two existing continuous effective control of research from this country. strip mills was already very near its maximum, In the debate on the Exchange Control Bill, but efforts were being made to increase it. came an almost directly contrary viewpoint Subsequently an assurance was given by Mr. from Mr. David Eccles. Deprecating the Belcher for the Board of Trade that no great placing of obstacles in the way of Americans quantities of steel sheet were being exported investing money in this country, the Member in the present emergency. for Chippenham appealed for a wider approach to this problem. Americans and Debate on the B.B.C. Canadians, he said, considered that the In the broadcasting debate, arguments British workman would turn out a good about programmes and charges of corruption article at an economic price; they also stole the news headlines, but there were a believed that we could not fulfil our Bretton few references of interest to our industry* Woods obligations without stringent import In opening, the Assistant Postmaster-General December 27, 1946 E l e c t r i c a l R e v i e w 1055 recalled earlier discussions on the possibilities when first announced; but when the Bill was of frequency modulation and said the B.B.C. published the attitude changed, which Mr. was keenly alive to the situation. One dis­ Dalton was not slow to drive home in a advantage lay in the fact that new receiving light-hearted reference to the fact that “ quite sets, or adaptors for present sets, would be an agitation seemed to have been started up required; but this had been foreseen, and on behalf of the railway stockholders.” The discussions were proceeding between the reason for the change in outlook and the Post Office, the the radio industry strong opposition to the compensation terms, and the manufacturers. a subject which occupied a full day in the Touching on television, Mr. Burke stressed three-day debate, was because, as Mr. W. S. the fact that after the wartime shut-down Morrison vigorously asserted, “ of a novel London was now the only place in the world and malignant departure from normal from which daily programmes were sent out. practice in compensation. There had always He added the information that the number been some element of arbitration. The of wireless licences is now in the neighbour­ House had never before been asked to com­ hood of 10,700,000, and the number of bine the roles of purchaser and valuer.” television licences 4,450. On December 16th an apathetic House No Guarantee of Efficiency listened to the announcement of yet another The Opposition then attacked the new advisory council for industry. This time it organization which the Bill will set up. The was Mr. Wilmot blandly giving birth to an Minister of Transport becomes the head of “ Engineering Advisory Council.” Its object the greatest monopoly in the country with is to provide him with a means of consultation direct power to appoint nominees to the with employers and workers in the mechanical, fifty-five most important positions. The electrical and radio engineering industries Government did not reveal how this new “ on matters of general concern in the monopoly was to be truly efficient and no engineering field.” For some time Mr. Jack one on the Government side was able to Tanner, President of the Amalgamated reply effectively to Mr. Peter Thorneycroft’s Engineering Union, has been pressing for denunciation. this council, though no one seems very clear Doubtless when the Bill for the nationaliza­ what useful purpose it will serve. Names tion of electricity supply is debated we shall have still to be announced, and some familiar hear much of the same sort of thing again faces will meet round the table. Employers and the electricity undertakings will be in particular wonder what good the Council blamed for shortcomings which it was not in can do, but dislike opposing the formation of their power to remedy. Thus Mr. Dalton additional consultative machinery in case claimed that the railways were not in a they are accused of being obstructive. position to finance maintenance or recon­ struction of stations and other big permanent Transport Bill Doubts works. The House of Commons passed the second Mr. Anthony Eden pointed out, however, reading of the Transport Bill by 362 votes to that “ the arrears of maintenance were piling 204. This was the first time that the Opposi­ up not because the railways had not the tion vote had passed the 200 mark and money to pay for renewals but because they indicated the widespread criticisms of a could not get the necessary official sanction measure which will effect every man, woman for the materials.” With the prospect of and child in the country. With nationaliza­ continuing power cuts the Government will, tion of the electricity supply industry only a if it continues its present style of argument, little way off this Transport Bill poses the blame the electricity undertakings for lack of very pertinent question—how will electricity equipment and point out that a great deal of supply fare ? money will be required to provide it, but There are four different forms of com­ make no mention of the ban on new con­ pensation in the Bill, but the railway stocks struction during the war. correspond most nearly to electricity stocks and the Government’s method in this case Electricity Bill Introduced may provide the answer for electricity com­ As a fitting tailpiece to 1946 the Minister pensation. Compensation on the basis of of Fuel and Power formally presented the current stock exchange quotations of the Electricity Nationalization Bill on the last various railway stocks had a good reception day of the sitting, December 20th. 1056 Electrical Review D e c e m b e r 27, 1946 Views on the Hews Reflections on Current Topics OST of us hoped that one relief (and certain articles, but if the washing and rough- reliefs have been none too plentiful) drying processes are to become fully auto­ when the war ended was to hear no more air­ matic, the use of a wringer is out of the raid sirens. But many misguided authorities question. In my opinion, the normal routine are using them to call out the Fire Service and eventually will probably be spin-drying now some Yorkshire towns—Hull and followed by pressing on a rotary ironer. Huddersfield for example—are using them However, there is a long way to go yet to warn citizens of impending power cuts. before the average housewife is induced to Few people like the system; the exceptions give up her wringer and iron and before no doubt include those who have been her prejudices against the newer methods are caught in a lift between floors when a power overcome: prices too will have to come stoppage has occurred. Manchester (being down considerably. in Lancashire) has adopted a much better * * * method. About seventy industrial concerns Central Europe has frequently been the are on a system of special red lights which source of strange inventions which, once flash to an accompaniment of ringing bells mentioned in our press, are never heard of when a cut is imminent. again. The latest is the production of a * * * “ 62-year old Austrian shoemaker,” who, says Although it is proverbially ungracious to the Sunday Exp/ess, has devised electrically- look a gift horse in the mouth, fear of the warmed shoes. These are of normal shape, animal’s bite is sometimes unavoidable. I but between the outer and inner soles there earnestly hope that recipients of electrical is a duralumin plate surrounded by asbestos, presents this Christmas fared better than a connected with a small battery which fits correspondent who was given a small portable into the cavity of the heel. This arrange­ immersion heater. Its 380-W element, ment, rather unexpectedly, keeps the shoe housed in a 6 by | in. nickel-plated cylinder, constantly warm. The Sunday Express goes is connected by long screws passing through on to say that the invention was taken over a fibre disc (a tight sliding fit in the cylinder) by the Wehrmacht. Was this their Achilles’ to two terminals mounted very close to one heel? another on the far side of the disc. To * * * these terminals are attached the ends of The Dundee Courier and Advertiser reports some twin twisted flex which are taken that the Fife Electric Power Co. is attaching through a wide hole in a wooden stopper to to its accounts a tab bearing the statement:— a b.c. lampholder. How long it would be “ Nationalization means bad service and before a steamy atmosphere might have high prices.” This may possibly prove to unfortunate consequences is anybody’s guess. be true, but I think that until it is put to the Yet, I am informed, such contraptions are test it is little wiser than the opposite slogan obtainable locally at something under a “ Nationalization now means better times pound. Can no legislative attention be paid sooner.” The proof of the pudding (or the to protecting the man in the street against “ pie in the sky ”) will be in the eating. potential dangers of this kind? * * * * * * It is reported that the chairman of the U.S. With the increasing availability of electric National Farmers’ Electrification Conference washing machines the relative merits of held recently in Chicago expressed the view wringing and spin-drying are likely to come that a large part of the staffs of most American in for a good deal of discussion. There is farms would be replaced by electrical equip­ some difference of opinion as to their effective­ ment within five years. This is an ambitious ness, but probably it is safe to say that project which will be followed with great wringers are generally found better for close- interest by British farmers and electricity weave materials, while spin-drying is better supply authorities. By the way, the chair­ for open-weave. A considerable saving in man’s name, rather appropriately, was George ironing is achieved by dry wringing of Kable. —REFLECTOR. December 27, 1946 E l e c t r i c a l R e v i e w 1057 PERSONAL and SOCIAL News of Men and Women of the Industry^

A S we report elsewhere in this issue, Harland Engineering Co., Ltd., and Lancashire T»- Sir Stanley Angwin, B.Sc., M.I.E.E., has Dynamo & Crypto, Ltd., all of whom are been appointed chairman of the new board of represented by Bepco Canada, Ltd. directors appointed for Cable & Wireless, Ltd., The British Trade Mission to China, of upon the transfer of the company's undertaking which Mr. D. M. Buist of B.E.A.M.A. was a to the State. We are informed that Sir Stanley member, returned by air to England last week. Angwin will relinquish the appointment of The following appointments in the Depart­ ment of Posts & Telegraphs, Palestine, have been announced: Mr. E. J. Prichard, O.B.E., M.I.E.E., to be engineer-in-chief, filling the vacancy resulting from the appointment of Mr. D. H. Mackay, B.Sc., M.I.E.E., as Deputy Postmaster-General. Mr. A. G. Coates, M.I.E.E., recently chief engineer of the Iraqi Posts & Telegraphs, becomes deputy engineer-in-chief, and Mr. E. E. Cassell fills the new appointment of assistant postmaster-general (telegraphs and telephones). Another recent appointment is that of Mr. A. F. E. Evans, O.B.E., M.I.E.E., as divisional engineer, Northern Division, Haifa. Sir Stanley Angwin and Mr, J. Innes, chairman Mr. Evans was until recently district manager, and managing director respectively of the new Alexandria, in the Egyptian State Telephone Cable and Wireless board Administration. Messrs. Prichard, Coates, engineer-in-chief of the G.P.O., being succeeded Cassell and Evans all previously served in the by his deputy, Mr. A. J. Gill. The managing British Post Office. director of the board is Mr. J. Innes, C.B., B.Sc., Mr. R. L. Axford, who as we briefly reported M.I.E.E., who was formerly director of G.P.O. in our last issue has been appointed deputy Telecommunications, but since 1942 has been borough electrical engineer at Newport (Mon.), with the Ministry of Fuel and Power. received his education at Chafryn Grove In a farewell message to the staff, among School, Salisbury, and the last official acts of Sir Edward Wilshaw as at Bradford Technical chairman of Cable & Wireless, Ltd., Sir Edward College. He joined the says that by every constitutional measure open Bradford Corporation to him he opposed the Government’s designs Electricity Department because he believed that they would bring in 1910 as junior switch­ disaster on the service. Now having finished board attendant, and the fight, he wishes the State well with its new two years later went to responsibility, and hopes that his misgivings Portsmouth as switch­ may be proved to have been groundless. If board attendant. In he can be of service to the Government in an the following year he honorary capacity, he is willing to place himself was appointed charge at their disposal. He asks the staff to give engineer with the Wal- Mr. R. l. Axford Sir Stanley Angwin, the new chairman, the same thamstow Electricity loyalty as had been given to him. Department, and in 1928 became generating The directors of the Stirling Boiler Co., Ltd., engineer. He left Walthamstow in 1930 to announce that, after thirty-nine years of service, join the Newport Electricity Department as Mr. G. Summers is retiring on December 31st station superintendent, and has subsequently from his position of general manager of the held the appointments of second technical company, but will retain his seat on the board. assistant and chief technical assistant. He is an Mr. S. J. Whybrow has been appointed to associate member of the Institution of succeed Mr. Summers and has been elected to a Mechanical Engineers. seat on the board. Mr. J. E. Rapp, who was with Berry’s Electric, Mr. B. M. Burt, formerly with the Harland Ltd., for a number of years before tire war, has Engineering Co., Ltd., and, since 1933, vice- returned to open a new branch of this company president and chief engineer of Bepco Canada, at 5, Bystock Terrace, Richmond Road, Exeter. L td , flew to Britain on December 13th. He He will be in charge of the South West area. will ’spend several weeks visiting Bruce Peebles In April, 1940, Mr. Rapp rejoined the Merchant & Co.. Ltd.. Crompton Parkinson, Ltd., the Navy for service in the Atlantic.

C+ 1058 E l e c t r i c a l R e v i e w D e c e m b e r 27, 1946

At the annual meeting of the British Engineers’ for a radio engineer (£446 per annum). Other Association held in London recently the positions advertised are:—Deputy electrical following were elected new members of the engineer and manager for Cheltenham (£833); Governing Council:—Mr. E. B. Ball, managing chief technical assistant for Scunthorpe (£640); director of Glenfield & Kennedy, Ltd., Mr. installation engineers for Southend (£442) and C. D. H. Macartney-Filgate, managing director, Sheffield (electrical contracting) (£478) ; lecturer Tubes, Ltd., and Mr. W. J. Ruston, director, J. in electrical engineering for the South-East Stone & Co., Ltd. London Technical Institute (£300-£525 plus Major R. Stanley Smith has been released from allowances); and power station superintendent R.E.M .E. and has resumed practice as a consult­ for St. Helens (£681). ing management and production engineer Thorn Electrical Industries, Ltd., held their under the style of R. Stanley Smith & Associates, Christmas dance at the St. Pancras Town Hall with temporary office accommodation at 359, on December 13th. Over 400 people attended, Strand, London, W.C.2 (telephone : Temple including members of the staff from the Ferguson Bar 5647). Radio factories. Mr. A. S. Shier, a director of On and after January 1st Messrs. Alexander the company, deputizing for Mr. Jules Thorn Gothard & Partners, consulting engineers, will who was prevented from attending by illness, be at 8, Adam Street, Adelphi, London, W.C.2 made a short speech during which he read a (telephone Temple Bar 4688). telegram sent to the gathering by the managing director. Mr. H. Weenan, M.C. (in company Mr. C. B. Lewis, associate director of Oliver with Mr. G. A. Shea) then read the text of a J. Nilsen & Co. Pty., Ltd., Melbourne, who reply sent on behalf of the staff, wishing Mr. has recently completed Thorn a very speedy recovery. The ballroom twenty-five years’ ser­ was gaily decorated, and prizes distributed vice with the company, is visiting this country during the evening included champagne and compacts. early in 1947. Mr. Lewis spent his boyhood The staff of Falk, Stadelmann & Co., Ltd., in Taunton, Somerset, held their first post-war dance and social on and as a young man December 12th at the “ Paviour’s Arms” was assistant engineer Hotel, Page Street, Westminster. This function at the Taunton Electric which signalized the revival of the Veritas- Light Works. After a Efesca Social Club also included an excellent few years of wheat cabaret, and despite foggy weather over 200 farming and cattle drov­ attended. Those present included Mr. Gustav ing in Australia, he Falk, chairman of the company, and several Mr. C. B. Lewis gravitated back to the of the directors. electrical industry. Although the primary object of Mr. Lewis’s Obituary visit will be to see his family, he will make a Mr. G. Wiithrich.—We regret to record the number of contacts in the electrical industry. death of Mr. Gottlieb Wiithrich, M.I.E.E., Mr. J. H. Greenwood, who is at present with general manager and chief engineer of Oerlikon, the Willesden Corporation, has been appointed Ltd., which occurred on deputy electrical engineer and manager of December 16 th at a Walsall Electric Supply Department. London nursing home at A number of new appointments and promo­ the age of sixty-seven. tions have been made to the staff of the Ports­ Mr. Wiithrich came to mouth Corporation Electricity Department, this country in 1899 under Class J of the N.J.B. schedule. These after obtaining the dip­ include Mr. J. G. Thomas, who has been loma of the Burgdorf appointed civil engineering assistant (Grade 8), Technical College and Mr. F. H. Edwards, combustion shift engineer serving in the design (Grade 8), Messrs. A. H. Cooper and J. C. department, works and Parton, district mains engineers (Grade 8), and testing laboratories of Mr. E. L. Farrands, assistant shift engineer the Ateliers de Con­ (Grade 8b). struction Oerlikon, Switzerland. Further T h e late Mr. E. S. Waddington, M.lnst.W., A.M.I.E. Mr. G. Wuthrich (S.A.), Associate I.E.E., of Philips Industrial experience was obtained (Philips Lamps, Ltd.) has recently been elected in Vorarlberg, Scotland, Norway, Sweden, a vice-president of the Society of Engineers. France and Italy. Mr. Wiithrich was then engaged in the recon­ Torquay Corporation Electricity Committee struction o f slow-speed vertical steam engines has appointed Mr. V. E. Fisher, of Worcester, for driving Oerlikon flywheel generators in the as assistant district engineer. Pigeon House generating station of the Dublin Appointments Vacant.—In this issue the Corporation. At the beginning of the century Woolwich Electricity Department is advertising he was associated with the installation and setting December 27, 1946 E l e c t r i c a l R e v i e w 1059 to work of plant in a number of power and Mr. W. A. Potts, chief electrical engineer of convertor stations in London. the Power Production Department, State In 1903, Mr. Wiithrich became resident Electricity Commission of Victoria, died recently engineer, and in 1907 was appointed chief at the age of fifty-five. He was responsible for engineer and manager of the Ingenieur Bureau, the electrical design work of the Newport London. The most important contract was power station and the preliminary electrical the electrification of the Euston-Watford designs for the Kiewa hydro-electric project. Line for the London & North Western Mrs. J. E. Edgecombe.—We learn with regret Railway (now the L.M.S. Railway), which was of the death on December 19th, at the age of carried out during the 1914-18 war. Another eighty, of Mrs. Dorothy Lucy Edgecombe, the of Mr. Wiithrich’s undertakings was the wife of Mr. J. E. Edgecombe, who .vas for many planning of the works and its hydro-electric years borough electrical engineer of Kingston- plant for the Vigeland Aluminium Works in on-Thames and later a director of the Steam Norway. In 1921, Oerlikon, Ltd., was formed Electric Co., Ltd. and Mr. Wiithrich became general manager Wills.—Mr. S. V. Williams, chief metallurgist, and chief engineer. G.E.C., Wembley, who died on August 8th last, Mr. R. N. Vyvyan.— We regret to announce left £7,602 gross, with net personalty £5,782. the death of Mr. Richard Norman Vyvyan, Mr. M. J. Chapman, electrical contractor and formerly engineer-in-chief of the Marconi Co. founder of the Electric Instal'ation Co., Wimble­ In recent years he had been living in retirement don, S.W., who died on September 17th last, at Falmouth, and it was there that he died left £4,981 gross, with net personalty £4,953. on December 14th, at the age of seventy. Mr. Vyvyan joined the technical staff of Marconi’s in 1900, and after a short period at Ordnance Factory Conversion the Chelmsford works and at the wireless Manufacture of Electrical Apparatus station at Dovercourt, was one of the party who MBESIDES indicating the contribution of the selected the site of the station at Poldhu, in Royal Ordnance Factories to the war preparation for the first transatlantic experi­ effort, an exhibition now being held at the ments, and he supervised the erection of the Carlton Hotel, Pall Mall, London, until January station. Later he held the position of 18th shows how these establishments are now managing engineer in Canada for the Marconi helping to produce fittings and components for Co. Returning to this country from Canada the housing drive. Under the stress of war the in 1908, he was made superintending engineer Royal Ordnance Factories increased from three of the company. to 44 and at the peak employed nearly 350.000 After his return to England he started upon people as against under 10,000 in peacetime. the erection of stations for the original Imperial Among the factories now making goods for wireless chain which were never completed domestic use is that at Radway Green, Crewe. owing to the outbreak of war in 1914. After One of the largest of its kind in Europe, this that war Mr. Vyvyan was intimately connected establishment was during the war engaged with Marconi and Franklin in the development entirely in making 20 mm cannon shells and of the short-wave beam system, and he was fuzes. Conversion of a 5-acre section to peace­ responsible for the construction and engineering time use began in March and now production design of the Imperial wireless stations. has commenced of electric cookers for marketing Mr. Vyvyan was appointed engineer-in-chief of by Falco Electrical Appliances, Ltd. The the Marconi Co. in 1923 and consulting models are, of course, of the company’s latest engineer in 1932. From 1930 till 1932 he also peacetime design and will in a few months’ time held the position of joint engineer-in-chief of be turned out at the rate of one every five Imperial & International Communications, minutes. By about the middle of 1947 pro­ Ltd. (now Cable & Wireless, Ltd.). He retired duction of refrigerators for temporary houses in 1936. will commence under the supervision of the Professor P. Langevin.—The death occurred Pressed Steel Co., Ltd. At two other factories in Paris last week of Professor Paul Langevin, at Swinnerton and Poole, ceramics are being the eminent French physicist. In his work on made, including components for Falco, Jackson radio-activity, X-rays and the electron which and Revo cookers. Negotiations are also pro­ extended over a period of about fifty years he ceeding for the manufacture of thermal storage was associated with the Curies, J. J. Thomson water heaters. ______and Rutherford. Professor Langevin was seventy-four. Salaries and Conditions of Service Mr. J. M. C. Field.—We regret to record the The National Association of Local Govern­ death of Mr. J. M. C. Field, managing director ment Officers has asked six London electricity of the Borth & Ynyslas Electric Supply Co., companies whether they would be prepared to Ltd., and director of the Towyn, Aberdovey participate in a conference to discuss Whitley & District Electricity Supply Co., Ltd., which Council machinery for salaries and conditions occurred on December 18th, at the age of forty- of service, and its application to company six, after a short illness. electricity undertakings. 1060 E l e c t r i c a l R e v i e w D e c e m b e r 27, 1946

enable more articles to be made per man-hour Production and Export than hitherto. Industrial Progress at Stake Re-examination of production processes at frequent intervals would show where further UJRITAIN'S need to export on a scale economies could be made, while the incentive never previously reached and possible for the operator to work his machine to its reasons why the output per man-hour was now maximum capacity could only come from some so much less than it had been during and before form of output bonus, plus restoration of pride the war were the theme of the outspoken address of craftsmanship. b y S i r C l a u d e D . G ib b (chairman, C. A . Finally, more cheerful factory surroundings Parsons & Co., Ltd.) as North-Eastern Section would stimulate a man's pride in his work and president of the Institution of Production his desire for a brighter home, producing a Engineers. cumulative effect. There was much talk of loss of incentive on the part of the workers, the actual producers, but not a word about the managers being tired, Correspondence stale, suffering from malnutrition, and depressed Letters should bear the writers' names and addresses, not by heavy taxation; yet nothing could be more necessarily for publication. Responsibility cannot be dangerous than management fatigue. Sir accepted for correspondents' opinions. Claude had recently been in Australia where he found the food so good in variety, quality and Motor Inquiries quantity that he could not remember whether AS an engineer responsible for the it had ever reached such excellence at home. correct interpretation of purchasers’ Yet no one wanted to work there any more specifications for fractional-H.P. electric than here. Food could certainly not be blamed for the industrial unrest and “ go slow ” tactics motors, I have noticed during the past few that were so evident in Australia. years an increasing tendency to specify Was loss of pride in one’s home, products of “ synchronous ” motors. The fact often manufacture and country nearer to the root emerges after a few discreet questions that cause of low output ? He found it difficult to for only a proportion of such inquiries are believe that pride could not be restored; or synchronous motors actually required, and that fear of unemployment and old age, which some inquiries even specify 50-cycle syn­ no longer existed, was necessary to spur any chronous motors running at 1,420 r.p.m. Britisher to give his employer a fair return for These inquiries usually emanate from a fair day’s pay. designers and others better versed in the Alarming Rise of Costs characteristics of their own machines than During 1933-46 works costs of electrical of the motors which drive them, but a little engineering plant increased 120 per cent, despite publicity given to this increasingly common advances in manufacturing methods which error may do a little good. prevented the increase being even larger. Harrow. H . G. P o xon. Costs, prices of materials and wages were still rising at a rate that alarmed anyone who Heat Pumps exported a large proportion of his total pro­ duction. fM^HE recent discussion on this subject indi­ Blunt talking was needed; unless someone cates that heat pumps may have great started in the right direction, there would be no scope in the near future. One method would one for the masses to follow. The gospel of be to heat the boiler feed water and to use hard work and why it was necessary must be the refrigerated water to help cool the spread. condenser: or it could be used to cool the Sir Claude’s company had adequate export air which takes the heat from the generator. orders for electrical generating plant, but a recent example of competition indicated the This might be of service in hot climates. “ shape of things to come.” Tendering for a Tynemouth. C. T u r n b u l l . turbo-alternator to a European country which was a food exporter, his company’s price of Switches in Bathrooms £123,000 was the lowest British price and lower • NOTE at the end of I.E.E. Regulation than Swiss and Swedish tenders, but the order No. 1002 refers to the desirability of went to Czechoslovakia at £68,000. Coal providing a ceiling switch operated by a and steel in Czechoslovakia cost half what they non-conducting cord in a bathroom in place did in England and their workmen were highly skilled and industrious. of a switch on the wall. Would it not make Sir Claude had no wish to be a dismal prophet, for greater safety if the Regulation specified but facts must be faced. If further industrial that only ceiling switches were to be fitted progress was to be made, it must be through in bathrooms, kitchens and similar places 2 more utilization of power by every producer to Dorchester. S t a n l e y R o g e r s. H f I P i ; December 2 7, 1946 E l e c t r i c a l R e v i e w 1061 Boiler Plant External Deposits and Corrosion N Interim Report has been published by (distinguishable microscopically), i.e., bird- Al the Boiler Availability Committee (chair­ nesting, bonding and phosphatic. The first man, Mr. M. H. Adams) on External Depositsnamed is found most frequently on the first and Corrosion in Boiler Plant. In this bank of tubes when set low over the fire, Bulletin, No. MC/153, which is addressed as in older boilers or in boilers having a high more particularly to power-station engin­ eers, the Committee has co-ordinated in­ vestigations carried out for over seven years by the British Coal Utilization Re­ search Association, the Fuel Research Station of the Depart­ ment of Scientific and Industrial Research, Babcock & Wilcox, Ltd., E. Green & Co., Ltd., International Combustion, Ltd., the County of London Electric Supply Co., Ltd., the Lancashire Electric Power Co., and the London Power Co. Ltd. Deposits are divided Inlet to pendant superheater (right) after 718 hours into two main groups —high temperature (furnace, superheater superheat temperature that calls for very and boiler proper) and low temperature high gas temperatures at the furnace outlet; (economizers and air heaters). In the first generally it is the only troublesome type of group with stoker-firing are the hard deposits deposit in pulverized-fuel boilers. Gas tem­ peratures in the furnace or superheater should be as low as economically possible. Unlike the two other high-temperature deposits it resembles coal ash in composition and softening temperature and consists of sintered (surface-softened) particles or of particles fused on the tube. Bonded deposits, which occur mostly on

Relationship between phosphate and sulphate con­ tents of economizer deposits as it affects cleaning A = Very little affected by steaming. B= Partially softened by steaming. C = Softened by steaming. D=Removedby spray and wash. (Wetting agent used.) E= Removed by water washing. superheater tubes and are probably the most serious in their effect on availability, are a result of a matrix produced from the sodium potassium and sulphur in the coal. They differ from birdnesting in containing S 0 5 (PER CENT) from 10 to 50 per cent of water-soluble 1062 E l e c t r i c a l R e v i e w D e c e m b e r 27, 1946 matter composed of the sulphates or bi­ Phosphatic deposits cause more trouble sulphates of sodium and potassium, the where combustion conditions are strongly bisulphates being the more harmful, but reducing and fuel-bed temperatures are high; these are operative only when the ratio of high-phosphorus coals (more than 0 04 per sulphur to chlorine in the coal is high. cent) are less harmful on travelling-grate Temperatures of flue gas in the regions than on retort-type stokers. They should affected are high enough to cause sintering probably be burned in specially designed of the cement but not to soften the fly-ash. boilers. Fundamental research has indicated Phosphatic deposits are bound together that bonded deposits particularly can be chemically and by digestion of fly-ash beneficially affected by introducing fine particles, which are attached by phosphorus dusts of silicon, zinc oxide or magnesium in compounds. As few British coals contain the gas, but it is not yet certain whether sufficient phosphorus that can be released equally efficacious hvdro-carbon “ smokes ” during combustion to cause deposits, this can be liberated from the fire bed. trouble is not widespread, but when it Deposit troubles can be minimized by occurs it is serious. providing facilities, including good access Nature of Low-Temperature Deposits and means of draining the sludge after Low-temperature deposits on economizers washing, for cleaning the plant both on and mainly result from the presence in the gas off load (see “ Methods of Cleaning Modern of free sulphuric acid and are harder the higher Stoker Fired Boiler Plant,” MC/101 of the the feed-water temperatures; they are com­ Boiler Availability Committee). Tempera­ posed of fly-ash and condensed substances tures of leaving gases should be no higher and products of chemical reactions after than is required for economical super­ deposition. Generally the higher the phos­ heating of the steam. Turbulence of gases phate content the lower is the sulphate (and in the furnace reduces high-temperature vice versa) and the less soluble is the deposit deposits. By fitting a diaphragm across the which increases the difficulty of removal. furnace below the grate, closer control of Troublesome deposits and corrosion in combustion of difficult coals has been air heaters are all characterized by the obtained. The Report is well illustrated by presence of free sulphuric acid. They have typical examples of deposits. two distinct causes: First, the temperature of the heating surfaces may fall to that of the water dew-point of the flue gases, due to E.D.A. Activities too-cold inlet air or to unequal distribution DpHE second of the series of E.D.A. South- of gas and air flows; secondly, at higher E ast and E ast England Area lecture- temperatures, 200 to 300 deg F, small meetings was held at the Croydon Electricity quantities of H2S04 may raise the dew- Show room s. With an attendance of 140 sales point of the gas to upwards of 300 deg F, assistants, the meeting was again a highly successful one. The subject on this occasion coal of high sulphur content. was “ Electric Water Pleating Development,” The mechanism of deposit formation is and the lecturer was Mr. P. Honey, who dealt discussed with reference to analytical and with development during and since the war. physical determinations, results of combus­ The different types of water heater were tion experiments the, significance of sulphur explained and special attention was paid to the oxides and the effect of fine dusts and avoidance of common installation errors which “ smokes.” Studies at thirty-six power result in circulating currents of water being set stations have shown that deposit-forming up, and consequent abnormal pipe losses and waste of electricity. The value of the load to the characteristics are shown by sulphur, phos­ electricity supply industry and the fact that phorus and chlorine and that the relative electricity could solve any water heating proportions of these are approximately problem were stressed. A discussion followed constant for any given coal field. and the proceedings term inated with a tour With high-sulphur coals (3 or 4 per cent), round the showroom and office premises. air-heater corrosion can hardly be avoided Recently a programme of films which, in at present temperatures. Much of it can each case, featured “ Cooking for the Million ” be avoided, however, by re-circulation of was presented in London on December 12th to over a hundred m embers o f the South- heated air or parallel flow for air and flue Eastern Branch of the Institutional Manage­ gases. Experiments to prevent the catalytic ment Association. At the end of the film show formation of sulphuric acid in superheaters the Area Officer gave a short talk on “ The are proceeding. Economic Aspects of Electric Catering.” December 27, 1946 E l e c t r i c a l R e v i e w 1063 Pulverized Coal Firing* Development in Great Britain HIS country has been slow in adopting outside the furnace. Therefore those who T pulverized coal firing in electric power have been longest associated with this method stations. Only within the last ten yearsview with misgiving its selection as the means have boiler units in home stations attained of burning all fuel which cannot be disposed to a size which, on that account, warrants of in other ways. the burning of fuel in suspension rather than The tendency to divert a large proportion on stoker grates. When fuel conditions are of the poorest quality coal to new power favourable, travelling grates compete at any stations is viewed with alarm. Owing to the evaporations up to 250,000 lb per hr and variable quality of the ash and the limitations retort-type stokers are in some cases employed imposed by its presence in increasing quantity, for slightly larger outputs. boiler units must be moderately rated to A paper which M r . C. H. S p a r k s (chief maintain satisfactory availability. Combus­ engineer, Babcock & Wilcox, Ltd.) read tion rates must be controlled to obviate in London last week at a joint meeting of slagging and “ bird nesting ” with unfavour­ the Institutions of Electrical and Mechanical able fuel, which necessitates the provision of Engineers shows that the amount of coal larger furnaces than might otherwise be consumed in powdered form in power needed. stations in Great Britain increased from For boilers exceeding 400,000 lb per hr 900.000 tons in 1930 to 4-4 million in 1945, rating a strong case can be established for or 20 per cent of the total; it is expected to the use of specially selected fuel; alterna­ be 10 million tons, or 35 per cent, in 1950. tively, liquid ash removal may be employed, The average capacity of the boilers is but in either case disposal of the fine flue 225.000 lb per hr, the largest units in service dust from the arrestors frequently proves to being of 364,000 lb per hr. So far as can at be difficult as well as expensive. present be foreseen units are not expected to exceed 540,000 lb per hr in size. Cyclone Furnace The real reason for the sudden increased With a view to solving this serious problem utilization is that boilers fired with pulverized and to offset the disadvantages of variable coal have a proved reliability at least as ash characteristics, the Cyclone furnace has satisfactory as that of the best stoker-fired been evolved as the result of patient research units and, in addition, when well designed by the Babcock & Wilcox Co., of New they may be kept commercially clean by the York, which has been experimenting for use of soot blowers only between annual more than fifteen years with the firing of overhauls. crushed, as opposed to pulverized, coal with the object of reducing the whole of the ash to Freedom from Bonded Deposits the fluid state. By this means it can be The fortuitous freedom from the formation tapped and quenched to the solid state for of bonded deposits on the boiler super­ disposal, thereby obviating the necessity for heater and economizer pressure parts is one cleaning the boiler surfaces externally or of the most important of the many advantages providing means of protection for induced- claimed for pulverized coal. That statement draught fans, incidentally also eliminating all represents operating experience in Great fly-ash and carbon losses. Britain at moderate ratings, although air Such a boiler, of from 150,000 to 180,000 lb heaters are not immune. The result is that per hr capacity, has been in operation in the a smaller margin of standby plant is generally Calumet station of the Commonwealth acceptable. A number of new installations Edison Co. since 1944 without trouble. are being designed as units with a single There is nothing of special importance in boiler delivering steam to one turbo-generator the design of the boiler itself, but the cyclone of 30,000 or 50,000 kW. (8 ft in diameter and length) and the arrange­ Furnaces with a dry-ash bottom are ment of the furnace (only 9 ft wide between preferred in British power stations because walls) are quite novel in every respect. Details the coal is bituminous, but ash is a draw­ and drawings are included in the paper. back with pulverized fuel both inside and Crushed, as opposed to powdered, coal 1064 E l e c t r i c a l R e v i e w December 2 7, 1946 is likewise utilized for overfeed firing on to is at the moment under review by a com­ forward-moving grates with Babcock- mittee upon which are represented the coal Detroit “jet ” spreader stokers (see “ Kearsley and electricity supply industries as well as the Extensions,” Electrical Review, October 25th), manufacturers of appropriate equipment and a method which is claimed to compare furnaces. favourably with any other within its yet Now that boilers have reached (in some undetermined range of size. cases passed) the capacity at which the firing A considerably increased output of dust of coal by other methods is causing anxiety, fuel seems probable as the result of greater attention is being focused upon the use of mechanization of coal mines, so that pul- pulverized coal, presumably because it is verized-coal-fired boilers will always be in generally considered to possess advantages demand to dispose of it. The whole subject over all other systems. Safeguards Against Fire New Research Organization

t|'H E Government, through the Department testing station at Elstree to the Government. of Scientific and Industrial Research, has The broad subjects on which research will be decided to establish a comprehensive Fire Re­ conducted are fire prevention, fire fighting, search Organization, jointly with the Fire fire protection of buildings and other fire Offices’ Committee. For purposes of day-to-day hazards, e.g. ships, aircraft and special industrial administration it will operate as a normal hazards. organization of the fhe Fire Offices’ Committee, which is an D.S.I.R. A Fire Re­ association of fire insurance companies, has search Board has been for the last 150 years taken a leading part in appointed jointly by the the encouragement of fire protection in this D.S.I.R. and the F.O.C. country and in 1932, the Committee set up the The chairman is Lord testing station at Elstree (mentioned above) to Falmouth, Companion provide facilities for fire resistance tests required, I.E.E., M.I.Mech.E., not for fire insurance purposes, but to furnish and the members include essential data to the central and local authorities Dr. S. F. Barclay and industry generally in connection with the (Mather & Platt, Ltd.), construction of buildings. The station was Dr. P. Dunsheath, immediately made available to the D.S.I.R. for C.B.E., M.I.E.E. (W. T. research work. Henley’s Telegraph Now the Fire Offices’ Committee has decided Works Co., Ltd.) and to establish the “ Fire Offices’ Committee Fire Professor D. T. A. Protection Association ” and to undertake fire Townend, D.Sc., F.R.I.C. (director, British research jointly with the Department of Scientific Coal Utilization Research Association). The and Industrial Research through the formation members of the Board serve in their personal of the Fire Research Board. capacity and not as representatives of any organization to which they may happen to Fire Grading of Buildings belong. Underlying principles of fire protection in The Fire Research Organization is a joint buildings are reviewed in “ Post War Building body in which an industry and the Government Studies No. 20—Fire Grading of Buildings ” are partners, the cost being shared equally which is the work of a joint committee of the between them. The organization will be Building Research Board and of the Fire Offices’ responsible for the conduct of research on all Committee (H.M. Stationery Office, Is. 6d. net). aspects of the prevention and extinction of Fire grading assigns precautions to a building fires, on the safety of life in fires and the mitiga­ in order to relate safety to fire hazard. This tion of damage, except that on the fire resistance report covers primarily the construction of of buildings it will collaborate with the Buildings buildings (according to the fire load carried) Research organization of D.S.I.R. where much so as to avoid collapse and tc minimize risk of research on this subject has already been done. fire spread. Means o f escape and fire-fighting A fire research station will be jointly established. installations will be dealt with in succeeding The capital cost is likely to be of the order of parts. Fire load is the number of B.Th.U.’s £75,000 to £100,000 and the ultimate annual which could be liberated per sq ft of floor running cost up to £50,000, both shared equally area by the combustion of the building and its between the D.S.I.R. and the Fire Offices’ contents. An appendix gives a list of the fire- Committee. As part of their contribution to the resistance gradings of walls and floors and capital cost, the F.O.C. will transfer its fire protected steelwork. December 27, 1946 E l e c t r i c a l R e v i e w 1065 Tlie Power Situation Shortage Until 1949 or 1950 tB^HERE is no physical possibility of re- The use of mobile power stations suggested ■*- establishing the proper balance between by Mr. Shinwell recently was only a “ fleabite.” generating plant and production in this country If it were thought proper to cease all exports of before 1949 and probably 1950, and the next generating plant—they accounted for not more two winters are going to be even more difficult than 10 per cent of the total production— it than this. Making this statement last week, would be possible to speed up the provision of Mr. Harold Hobson, chairman of the Central plant here. It was, however, important to Electricity Board, added, however, that if the preserve the overseas market and the C.E.B. Government said tha generating plant was had never made any request to the Government to have first call on labour and materials it to ban exports. Generating electricity was a should be possible to overcome difficulties long-term problem and it would be useless to by 1949. try to cure the present trouble by taking Announcing the introduction of an extension machines about to be shipped abroad. The civil of the broadcast warnings of electricity cuts, engineering work alone accupied two or three Mr. Hobson said that they would be given years. between items in the Light Programme and would be of use particularly to firms which Ministry of Supply Explains used “ Music While You Work.” He suggested Questioned about Mr. Hobson’s statement that factories should arrange to have someone that the Government had arranged to reduce listening all the time during the critical period drastically the output of electric fires, etc., for just before 4 p.m. and during the morning the home market by the control of raw material, peak. a Ministry of Supply official told us that the Ministry was not aware of any request to reduce Plant Extensions Delayed the number of electric fires being produced. Mr. Hobson stressed again that the present As from the beginning of November the licensing cuts had nothing to do with coal shortage but of the manufacture of all domestic appliances said that possibly they might be in difficulty was cut down because of the shortage of raw from that cause in the New Year. He explained materials and the allocation of these appliances that adequate generating plant was not available would continue to be restricted for some because in 1941 the Government deliberately months. banned the production of new generating plant The productive capacity of the industry is so as to ensure that sufficient armaments should greatly in excess of essential requirements for be available. The demand for electricity had electric fires and in view of the present supply continued to grow—during the past few weeks situation raw material allocations are already it was at least one million kW higher than at not so great as formerly. The Ministry expects the same time last year— and we were now to meet all estimated essential requirements paying the price. Before the war it took three for the production of such appliances as fires, years to build a generating station: to-day, cookers, washboilers and immersion heaters. because of shortages of materials and labour The approximate average monthly production and through a falling-off in production, it was of electric fires has risen from 115,000 in 1937 taking four years or longer. There were still to 220,000 in the third quarter of 1946. bottlenecks in production and of the 900,000 kW Rationing Not Contemplated of plant planned for service by the end of this year only 200,000 kW had been put into com­ Last week the Ministry of Fuel and Power mission. He doubted whether more than stated that there was no foundation for press half of the programme would be completed by reports that plans had been worked out by the the end o f February. Ministry for an electricity rationing scheme or Domestic consumers, who accounted for that private consumers would be subjected to about 30 per cent of the total consumption sorrie form of supervision to prevent waste. (industry took 60 per cent and public lighting, The Birmingham Electric Supply Committee shops, hospitals, etc., 10 per cent) could alleviate has suggested to the Minister of Fuel and Power the position and reduce cutting off supplies if that arrangements should be made for factories they switched off fires, cookers and water heaters to close on one day a week in “ staggered ” during peak periods. The C.E.B. had been order; that penalties should be instituted for pressing the Government to control the manu­ domestic waste of fuel; and that the sale of facture of radiators (of which half a million had electric heating apparatus should be prohibited. been sold during the first half of 1946) and The Committee says that at the present rate its other appliances and he had reason to believe coal stocks will be exhausted by the end of that the supply of materials for manufacturing January and unless the position is ameliorated these articles was at last to be restricted. a 25 per cent power cut will be necessary. 1066 Electrical Review December 27, 1946 PARLIAMENTARY NEWS By Our Special Reporter

YN the House of Commons last week Mr. general concern in the engineering field. Matters Erroll asked the Minister of Works whether normally handled by the joint organization of he intended to encourage the use in Government employers and trade unions in connection with buildings and housing schemes of the universal wages and conditions o f employment were domestic electric plug and socket recommended excluded. The engineering industries for this by his Electrical Installations Study Committee purpose would comprise mechanical, electrical in Building Studies No. 11 ; and when the and radio engineering, but not shipbuilding or relevant British Standard Specification would the iron and steel industry, which fell within the be published. purview of the Iron and Steel Board. The Mr. Tomlinson said that the British Standards Council would consist of trade union and Institution had prepared a draft specification employer members with himself as chairman. for the universal domestic electric plug and socket which had been circulated to all interested Electricity Bill parties for observations. Until the specification On December 20th the Minister of Fuel and was issued in final form no decision could be Power introduced the Electricity Bill which was made as to its adoption. Manufacturers were read a first time. The Bill provides for “ the proceeding with development work, pending establishment of a British Electricity Authority the issue in the near future of a British Standard and area electricity boards and for the exercise Specification. Owing to the necessity for re­ and performance by that authority and those tooling, however, substantial supplies were not boards and the North of Scotland Hydro- likely to be available for about twelve months. Electric Board of functions relating to the supply of electricity and certain other matters, Engineering Advisory Council for the transfer to the said authority or any In answer to Sir R. Young, Mr. Wilmot said such board as aforesaid of property, rights, that, following the discussion which he had had obligations, and liabilities of electricity under­ with the engineering trade unions, he had takers and other bodies, to amend the law decided to set up an Engineering Advisory relating to the supply of electricity, to make Council to provide him a means of consultation certain consequential provision as to income- with employers and workers on matters of tax.”

V AST week we referred to the gift of Broome rooms, besides other apartments. It has a Park, Betchworth, Surrey, to the Electrical central heating system and is up-to-date in Industries Benevolent Association by Mr. and every respect. The 25-acre grounds include Mrs. Joseph Cunning. A brochure which we two lodges, a number of cottages, a park, have now seen shows that the estate possesses woodland and a chain of lakes. a wide variety of domestic and scenic amenities It is proposed for the time being to use the which will make it ideal for its new purpose. existing buildings to house the Association’s The Georgian mansion (a view of which is beneficiaries. Later, small bungalows may be reproduced) contains four large reception rooms, erected in suitable spots, care being taken not to sixteen bed and dressing rooms and four bath­ mar the character of the estate.

A view of Broome Park showing the east front of the house December 27, 1946 E l e c t r i c a l R e v i e w 1067 COMMERCE and INDUSTRY Electronic Instrument Manufacture. Assistance for Students. W^OURTEEN member firms of the Scientific that, in respect of unwrought metal, our existing Instrument Manufacturers’ Association stocks plus our outstanding purchases, plus of Great Britain, Ltd., have formed an Elec­ the tonnage now being applied for, will not tronics Section. The first chairman is Capt. exceed six months’ consumption at our average A. G. D. West, director of Cinema-Television, monthly rate of consumption in September Ltd., and the companies forming the Section and October, 1946.” Applicants for licences are:—Baird & Tatlock (London), Ltd., Baldwin to acquire hot rolled copper wire rods are not Instrument Co., Ltd., Cinema-Television, Ltd., required to furnish the second of the above Adam Hilger, Ltd., Henry Hughes & Son, Ltd., declarations. The issue of a rod licence, however, Kelvin, Bottomley & Baird, Ltd., Marconi does not guarantee that the holder will be able Instruments, Ltd., Mullard Wireless Service Co., to place contracts against the licence, either with Ltd., Scophony, Ltd., Short & Mason, Ltd., rod manufacturers or the Directorate of Non- the Sperry Gyroscope Co., Ltd., Sunvic Ferrous Metals. Controls, Ltd., Taylor Electrical Instruments, Ltd., and Taylor, Taylor & Hobson, Ltd. One Electrical Machinery Prices of the main objects of the Electronics Section In this issue the Associated Dynamo & Motor will be to further and improve the manufacture Manufacturers, comprising sixteen concerns, of British electronic instruments and apparatus. announce that outstanding dynamo and motor It will encourage the design and manufacture of price lists will be cancelled on and from January British electronic apparatus, both in research 1st. Details of new prices are obtainable from and industry, thus helping production at home inquirers’ usual suppliers. and entering world markets abroad where there are, at present, first-class opportunities for Physical Society’s Exhibition British goods. Instead of holding its annual exhibition of Electric Torch Batteries scientific instruments at the beginning of the The Board of Trade, in consultation with year as has been customary, the Physical the Central Price Regulation Committee, has Society has decided to arrange the display from made the Electric Torch Dry Batteries (Maxi­ April 9th to 12th. It will be at the usual place— mum Prices) Order (S.R. & O. 1946 No. 2100), the Imperial College, South Kensington. permitting increased maximum prices for certain types of home-produced electric torch dry Civil Service Appointments batteries. The Order came into force on Particulars will be found in our advertisement December 23rd and copies (price Id.) can be pages to-day of the Civil Service Commis­ obtained through any bookseller or newsagent sioners’ special competition for appointments or direct from H.M. Stationery Office. as assistant engineer (new style), male, in the Post Office Engineering Department, and Sulphuric Acid Prices assistant traffic superintendent in the Telephone In the Control of Sulphuric Acid (No. 3) Department of the G.P.O . Approximately 100 Order, 1946 (S.R. & O. 1946 No. 2033, Station­ vacancies in each grade will be filled by exami­ ery Office, Id.), the additions to the basic price nations spread over a period of two or three chargeable for sulphuric acid by a United years. Kingdom producer are specified in a schedule. This replaces the method of issuing Directions B.T.H. Educational Grants under the No. 2 Order and at the same time To commemorate the jubilee of the British the additions are revised. Thomson-Houston Co., Ltd., this year the directors arranged for a number of financial Unwrought Copper and Zinc grants to be awarded over the next three years The Ministry of Supply has revised the to assist employees of at least ten years’ service licensing procedure for the acquisition of in the education or training of their sons or unwrought copper and zinc and copper wire daughters of school-leaving age or over. These rods. Applications for licences to acquire awards will be made where the circumstances unwrought copper and zinc will in future only merit such additional assistance, and it is not be granted if accompanied by the following intended that they should be confined to signed declarations: (1) “ We certify that the engineering training, as the B.T.H. apprentice­ quantity requested on the accompanying applica­ ship and fellowship schemes meet nearly all tion is needed to cover orders for our products, such requirements. Under the new Education and that in the case of applications for virgin Act, State and county scholarships should be metal full allowance has been made for our available for all pupils capable of taking expected intake of scrap.” (2) We certify advantage of a university or other collegiate 1068 E l e c t r i c a l R e v i e w December 21, 1946

training, but it is possible that in the next three that he would have to serve the com pany with years there may be cases where this is not fully satisfaction for twelve months before he would available although the candidate may have been be eligible to rejoin. Mr. Ricketts, for the accepted for admission to a college. The company, said that membership of the schemes scheme is intended to assist such persons. was a privilege and not a condition of employ­ In addition to university or technical college ment. The company was prepared to receive education, it is intended that assistance shall him into the schemes at the- appointed time. be given for other forms of training such as in The Committee unanimously found that the com­ commercial or art colleges; colleges of music; pany had fulfilled its obligations under the Act. in chartered accountancy; agriculture, etc. Courses of advanced study may be undertaken Commercial Travellers’ Benevolence in such subjects as medicine, dentistry, zoology, physical training, municipal engineering, physio­ Accounts for the past year for presentation therapy, architecture, auctioneering, bacteri­ at the annual meeting to-morrow (Saturday) ology, physics, mathematics, and many branches show that the receipts of the Commercial of teaching. Travellers’ Benevolent Institution amounted to Following the decision to initiate this scholar­ about £16,000 and the payments to a similar ship scheme, a committee was appointed under amount. The balance in hand rose from the chairmanship of the company’s chief £4,230 to £4,644 and the investments by electrical engineer to consider applications. £2,000 of 3 per cent savings bonds. Of the total number received, 28 per cent were outside the scope of the scheme, 40 per cent Electric Hammer Fatality were deferred as no expenditure was involved An inquest was held at Poplar on December during the present academic year, and 32 per 17th on S. H . Doyle, a builders’ labourer, who cent were considered for awards. In 20 per received a fatal shock when using a portable cent of the cases, grants were made up to £100 electric hammer for chasing walls in a block of each for 1946-47, and where expenditure is flats in course of construction. Evidence was involved next year or the following year the given by Mr. J. L. Wood, H.M. Electrical granting of awards will be continued. Recipients Inspector of Factories, that the cable had been of the grants are employed at various works partly pulled out from the handle of the hammer, and offices of the B.T.H. Co. In general, the and that the insulation of one of the current grants are additional to awards being received carrying conductors had become punctured due from other sources, but in several cases the to a sharp edge at the point of entry into the grant made by the company provides the only switchbox. Although the earth continuity of the assistance being received by a parent. flexible cable was unbroken, the earthing of the switch socket from which it was supplied Infra-Red Paint Storing was unsatisfactory. A temporary earth con­ To speed up the production of water heaters nection had been made to a length of steel of the lagged storage type, Johnson & Phillips, conduit driven about 24 in. into the ground, Ltd., have recently installed a “ Metrovick ” which when measured was found to have a infra-red “ oven ” capable of paint stoving resistance in excess of 50 ohms. In the course cylindrical outer cases from ly to 30 gal. capacity. of the evidence it was brought out that artificial This method, which completely paint stoves respiration was applied for about ten minutes each body in five minutes, is a considerable before an ambulance arrived to take Doyle to improvement on the older methods of drying. hospital. A verdict of death by misadventure Ninety-six infra-red lamps are used, with a total was returned. loading of 24 kW. In addition to saving time, this plant occupies the minimum floor space Large Transformer for France (12 by 4 by 13 ft) and is readily adapted to any As part of the programme for the develop­ change in factory layout. ment of the French electricity network the British Electric Transformer Co., Ltd. (in Reinstatement and Pensions association with Crompton Parkinson, Ltd.), An employee’s appeal that by not admitting has just built a 50-MVA, 150/15/6-kV trans­ him to the company’s co-partnership and former. for the Vendin station of the Société de pension schemes the Mid-Southern Utility Co. Transport d’Energie Electrique de la Région had failed to carry out the decision that he du Nord. It is 3-phase 50 cycles, star/delta should be employed on terms and conditions connected, and fitted with a twin “ A ” type such as he enjoyed before joining the Army cooler unit. A special construction provides an came before the Reinstatement Committee at end door in the tank to enable the carcase to be Worthing recently. The employee, Mr. L. A. removed horizontally as there is insufficient Brown, said that when he joined up he was headroom in the site workshop for it to be paid out of the schemes, but not at his request. lifted vertically. The carcase slides into the On returning he notified an official that he was tank on rails, and is pulled in by a tackle passing ready to pay into the schemes the money that through a door at the opposite end of the tank. had been paid to him, but it was pointed out The transformer and the twin “ A ” type December 27, 1946 E l e c t r i c a l R e v i e w 1069 cooler unit are designed to be fitted with bogies, two-thirds of her oil-bearing territory to Russia, carrying flanged rollers mounted in roller but had gained coalfields in Silesia. The great bearings, which enable them to be moved on need of Poland to-day was capital equipment standard French gauge railway lines, or, by for the reconstruction of her industries. Mr. rotating them 90 deg, on the special tracks Neville thought that much could be done on an provided for moving them into their final exchange basis by this country in meeting this position on site. The cooling is ON/OFB, the need. Poland was prepared to exchange food artificial system being controlled thermostatically and coal for equipment. The three-year plan to come into operation at 50 per cent load. provided for the re-equipment of all her indus­ Type LS on-load tap-changing gear provides a tries, and included plant for power stations and voltage regulating range of 30 per cent, plus or for her iron and steel industries. minus 15 per cent in twenty steps. The total weight of the whole unit is approxi­ Belgian Electrical Trade mately 112 tons, and the carcase in the tank During the first half of 1946 Belgian imports weighs 82 tons. This part was transported of electrical machinery apparatus, accessories from the works at Hayes, Middlesex, to the and spares were valued at 409,083,000 fr. and Royal Albert Docks on a 35 ft long 100 ton side exports of such goods at 129,911,000 fr. girder wagon, with two eight-wheeled bogies, Switzerland was a notable supplier of electrical propelled by two 45-ton haulage capacity, goods and Holland of certain descriptions, 100-H.P. Scammell tractors. while Spain appeared as a customer. Coventry Apprentices’ Association Film Studio Lighting Mr. F. W. Godden, the electrical engineer Since the end of the war the General Electric and manager, is the president of the Coventry Co., Ltd., has designed a complete new range Electricity Department Apprentices’ Associa­ of film studio lighting equipment, and the first tion which has just been formed. Mr. G. deliveries were recently made at the newly- Woodward, one of the twenty-four apprentices opened Southall Studios of Alliance Film now being trained in the Department, is Studios, Ltd. Mr. James Carter, managing secretary of the Association, the objects of director of these studios, has placed large orders which are to form a link between past and with the G.E.C. The equipment delivered so present apprentices, to facilitate discussion of apprenticeship matters and to organize social events and visits of educational value. Situation in Poland At the recent Congress of the General Technical Federation in Poland, the British Engineers’ Association was represented by Mr. N. Neville, a member of the Association’s Export Committee. On December 18th at Charing Cross Hotel, Mr. Neville spoke of some of the impressions gained during his visit. He said that the conference was held to discuss a three-year plan for the reconstruc­ tion of Poland. That country had suffered severely during the war and had lost about eleven million people. A large proportion First consignment of the new type of G.E.C. film lighting of this number were Jews equipment being carried into the Southall Studios who were the chief distributors, and this had had a serious effect on far includes fifty 2-kW incandescent units, Polish industry. In addition to the loss of twelve single light broadside units with diffusers, man-power, 40 per cent of the railway facilities snoots and stands, and eight 5-kW incan­ had been destroyed, bridges had been blown descent units. All these units are equipped up and the majority of the passenger wagons with “ Osram ” lamps. had disappeared. Transport was one of the main handicaps to industrial recovery. Staff Magazine’s Hundredth Issue The principal industry of Poland was agri­ The Christmas issue of “ 600,” staff magazine culture, the number of workers in which had of George Cohen, Sons & Co., Ltd., and fallen by about eight million. Poland had lost associated companies, celebrates a double 107 0 E l e c t r i c a l R e v i e w December 27, 1946

anniversary. It is both the hundredth issue Treatment, Ltd., will commence operations in and the twenty-first birthday of the publication. Great Britain as from January 1st, and will be The current issue returns to normal format for responsible for business in Great Britain, the first time since the war and includes, as a Ireland and the Colonies. The temporary new feature, a special staff supplement. There is address is St. Mary’s, Blackmore End, Wethers­ a pictorial feature humorously illustrating field, Essex (telephone: Shalford Green 315), the very early days of the group. and the manager is Mr. H. R. Wolfenden, lately contracts superintendent with the Britannic Cable and Wireless Transfer Electric Cable & Construction Co., Ltd. Mr. Dalton announced in a written reply to Electrical Exports Rise a question that he had fixed January 1st next as the date upon which the balance of the shares Figures of overseas trade for November of Cable & Wireless, Ltd., would pass into the show that there was a further rise in exports of hands of the Government. As from that date electrical goods and apparatus. Details of the there would be a new board of directors with trade will appear in next week’s issue. Sir Stanley Angwin (engineer-in-chief of the G.P.O.) as chairman and Mr. John Innes, Calendars and Diaries C.B., B.Sc., M.I.E.E., as managing director. The calendar of Johnson, Matthey & Co., The other members were Maj.-Gen. L. B. Ltd., has daily slips, each of which bears a Nicholls, Mr. A. Black and Mr. C. N. Gallie, quotation, mounted on a tastefully designed card. the last two being part-time members. There Ferranti, Ltd., has sent us a useful engage­ might be a further part-time member. ments pad in a pleasing blue leatherette cover. Each weekly sheet has also a calendar for the Threatened Power Stoppage preceding, current and following months. At the end of last week representatives of The calendar of Technical & General works committees in some of the London power Advertising Agency, Ltd., has monthly sheets stations informed their unions that unless the with bold figures. unions did something by December 31st to secure increased wages and improved conditions, including a 40-hour week, there would be a Trade Marks complete shut-down of the London power f|7H E following applications have been made stations. The men complained that the unions for the registration of trade marks. Ob­ had not proceeded rapidly enough with negotia­ jections may be entered within a month from tions. In reply, the representatives of the December 11th:— unions said that a meeting to discuss these D elaflex. No. 634,035, C lass 9 . Insulated matters had been called for December 30th electric conductors. Also No. 6 3 4 ,0 3 6 , Class and that no good purpose could be served by 17. Electrical insulation material.—De la Rue “ direct action.” Plastics, Ltd., Avenue Works, Walthamstow Avenue, London, E.4. House-Building Committee D.K.B. (design). No. 641,366, Class 9. As from December 30th, the address of the Electrical apparatus and instruments included organizing secretary (Mrs. M. Pleydell-Bouverie) in Class 9. Also No. 641,367, Class 11. of the House-Building Industries’ Standing Electric heating, lighting, cooking, drying and Committee will be 4, Manchester Square, ventilating apparatus.—D.K.B. Electric, Ltd., London, W.l (telephone: Welbeck 1356). 109, Kingsway, London, W.C.2. A l c o s a . N o. 643,157, Class 9. Electric Electricity Board for Northern Ireland soldering irons, arc welding apparatus, resistance The head office of the Board is now at welding apparatus and blowers.—William All­ Danesfort, 114, Malone Road, Belfast (tele­ day & Co., Ltd., 3 8 a , Paradise Street, Birming­ phone 68211; telegraphic address: Norelect, ham, 1. Belfast). D iffusalux. No. 643,733, Class 9 . Elec­ trical apparatus and appliances included in Trade Announcements Class 9.—Thorn Electrical Industries, Ltd., T.M.C.-Harwell (Sales), Ltd., are removing to 1 0 5 - 1 0 9 , Judd Street, London, W.C.l. 37, Upper Berkeley Street, London, W.l Minwink. No. 643,932, Class 9. Electric (telephone: Paddington 1867) and the removal vacuum cleaning apparatus and electric flat will be completed by January 13th. irons.—S. T. Meggitt & Son, Ltd., Bourne Mr. G. F. Sargent, buyer of Radio Trans­ Chambers, St. Peter’s Road, Bournemouth. mission Equipment, Ltd., has been appointed Siemax. No. 643,969, Class 9. Electric purchasing agent for Philips Transmission, Ltd., batteries.—Siemens Brothers & Co., Ltd., Brathway Road, Wandsworth, S.W.18. Caxton House, Tothill Street, Westminster, We are informed by the Cobra concern, of London, S.W.l. Paris, whose process of re-impregnation in situ Nico-Caloray. No. B641,023, Class 11. can be applied to increase the life of wood poles, Electric fires.—Nico Light Engineering Co., that its affiliated company, Cobra Wood Ltd., 1, Laud Street, Croydon. December 27, 1946 Electrical Review 1071 ELECTRICITT SUPPLY Nelson Tariff Decision. Deputation on Severn Scheme.

Billesdon.— Supply to Camp Cut Off.— abolish separate tariffs and make one all-in So heavy has been the load on the wiring at charge for light and power in new houses. It the camp occupied by “ squatters ” at Thurnby, will be similar to the rateable value tariff. Leicestershire, due to the use of unauthorized electrical appliances, that the Rural District Nottingham.—Power Station Extensions.— Council has cut off the supply to the camp Extensions to North Wilford power station, until matters are remedied. Repeated warnings estimated to cost £6,000,000 when the whole to the squatters have all been ignored. scheme is completed, are progressing satis­ factorily, and it is probable that the first of the Carmarthen Bay.— Proposed Power Station. new units being installed will be put into —Notice is given in the London Gazette that commission about the end of January. application has been made to the Electricity Commissioners by the Carmarthen Bay Power South Wales.— Severn Proposals.— At the Station Co., Ltd., for consent to the establish­ House of Commons last week, Messrs. Shinwell, ment of the Carmarthen Bay power station in Bevan and Williams received a deputation the area of the Llanelly & District Electric from the Montgomeryshire County Council Supply Co., Ltd., the site being partly in the which urged that the Government should urban district of Burry Port and partly in the undertake an inquiry into the possibility of rural district of Llanelly. Objections by harnessing the upper reaches of the Severn. It either of the local authorities or by the owner or was suggested that such a scheme would provide lessee of any property within 300 yd of the a full water supply to Montgomeryshire and proposed site must be submitted to the Secretary, Radnorshire as well as other areas; constitute Electricity Commissioners, Savoy Court, a method of flood control; and provide a source Strand, London, W.C.2, within thirty days from of electric power. The Ministers promised that December 6th. the matter would receive careful attention. Walton and Weybridge.—Price Increases.— Dartford.— Sale of Radio Sets.—The Elec' In view of the deficit of £9,760 on the past year’s tricity Committee reports that four types of working of the electricity undertaking it is “ Civic Concord ” radio sets have been placed proposed to increase the charges as from the on sale at the showrooms. The sets are end of the March quarter. The lighting flat offered for sale outright or on hire-purchase rate will be raised by Id to 6d per kWh and terms. the heating and cooking rate by id to ljd Douglas (I. O. M.).—Payment to Contrac­ (domestic) and lid (commercial). Under the t o r s . —The Electricity Committee has increased two-part tariff the present charge of l jd will be the payment to contractors for cooker wiring increased to lid and the lid charge to 1 ^d. from Is. lOd. to 2s. per ft. Before the war the lighting flat rate was 4d and Glasgow.—Installations for Gas Depart­ the running charge under the domestic “ all in ” ment.^—The Gas Committee has arranged for the tariff id where an electric cooker or water Electricity Department to provide services at heater was installed. the canteen, baths, etc., at Provan chemical Warrington.— Rate Contribution.— A sum works at a cost of £450, and electricity is to be of £10,000 is to be contributed in aid of the installed in 19 staff houses at a cost of £1,050. rates by the Electricity Department, which last London.— Hospital Installations. — In 1938 year made a net profit of £11,095. the L.C.C. approved an estimate for rewiring West Hartlepool.—Payment of Accounts.— Queen Mary’s hospital for children, Carshalton. During the war the Town Council decided that Only the first year’s programme costing £2,636 electricity accounts should be paid on a four- was finished and it is now proposed to complete monthly basis instead of three-monthly. The the work at an estimated cost of £8,500 spread borough electrical engineer has reported that over four years. The final instalment of the introduction of the four-monthly system rewiring the electrical installation at Tooting coincided with a 15 per cent increase in consum p­ Bee hospital is also to be undertaken, the tion and the cumulative effect has been to estimated cost of £8,450 being spread over produce an exaggerated impression of the cost three years. of electricity. The Town Council has therefore Musselburgh. — Electric Lighting to agreed to revert to three-monthly accounts at Replace Gas.— The Town Council has decided the beginning of 1947. that as soon as practicable all gas lighting Willesden.—Substation Equipment.— The installations in houses erected under the Housing Electricity Committee has approved a scheme Acts shall be replaced by electric lighting. for the extension and modification of the bulk Nelson.—Single Tariff for New Houses.— supply equipment at Gibbons Road substation. Confronted with a serious shortage of meters Application is to be made for sanction to the Electricity Committee has decided to borrow £6,177. 1 072 E l e c t r i c a l R e v i e w December 27, 1946 FINANCIAL SECTION Company News. Stock Exchange Activities.

Cape Electric Tramways, Ltd., reports a Reports and Dividends revenue for the year ended June 30th last of Barcelona Traction, Light & Power Co., Ltd.— £98,628 (against £60,985). The dividend is At the annual meeting on December 17th a maintained at 6 per cent and £109,790 (£67,505) statement was made regarding the company’s is carried forward. proposals for dealing with the amounts due The Bagdad Light & Power Co., Ltd., reports to the holders of its sterling bonds, interest on a profit for the past year of £21,733, as com­ which has not been paid, owing to the company’s pared with £17,246 for the preceding year. The inability to convert pesetas into sterling, since dividend for the year is 6 per cent (against 5 1936. The bondholders, by a large majority per cent). accepted a plan by which they would be paid a capital sum in sterling instead of running the Johnson Matthey & Co., Ltd., are maintaining risk of a possible continued accumulation of their interim dividend at 3 per cent. arrears of interest. Although the company secured the necessary commitment from “ a New Companies group interested in the successful operation of Daveen Manufacturing Co., Ltd.—Registered the company ” it had failed to secure the December 10th. Capital, £3,000. To acquire necessary permission of the Spanish Govern­ the business of manufacturers of, and dealers in, ment and the British Treasury was not prepared lampshades and standards and electrical and to consider the plan until that permission was other fittings carried on by A. J. Stockford and obtained. D. I. Phillips at 41, Howland Street, W.l. It has been intimated to the company that an Directors: A. J. Stockford and D. I. Phillips. offer may be made by parties substantially Regd. office: 506, Ulster Chambers, 168, interested in the prior lien bonds to purchase' Regent Street, W.l. the bonds of other holders at a price equal to or slightly above the December 14th market Slaters Electricals, Ltd.—Registered December price. The company is continuing to press for 2nd. Capital, £5,000. Electrical, mechanical, the Spanish Government’s sanction to the marine, constructional, internal combustion and conversion of pesetas to sterling to enable it general engineers, etc. Directors: H. W. to meet its liabilities to holders of the sterling Slater and H. F. Slater. Regd. office: 34, bonds. Princess Way, Team Valley Trading Estate, Gateshead-on-Tyne. Crossley Bros., Ltd., last Friday offered for subscription 475,000 5 per cent 5s. cumulative C. A. Pocock & Co., Ltd.—Registered Novem­ preference shares at 6s. each and 475,000 5s. ber 30th. Capital, £1,500. To acquire the deferred ordinary shares at 15s. 6d. each. The business of an electrical engineer and con­ deferred ordinary shares are entitled to tractor carried on by Charles A. Pocock at narticipate in the profits remaining after divi­ 10, Mill Street, Somercotes, Derbyshire. Direc­ dends have been paid on two classes of 5 per tors: C. A. Pocock and J. O. Clark. Regd. cent preference shares and 7 per cent preferred office: 10, Mill Street, Somercotes. ordinary shares. The company has no deben­ W. E. Rawcliffe, Ltd.—Registered November ture or mortgage debt. In the past three years 29th. Capital, £500. Manufacturing electricians the existing deferred ordinary shares have and mechanical engineers, radio engineers, received dividends of 5, 10 and 12i per cent, electrical engineers, etc. Directors: W. E. respectively. The proceeds of the issue will be Rawcliffe and Mary A. Rawcliffe. Regd. used to finance the company's large programme office: 18a, Church Road, St. Annes-on-Sea. of extension and development. Interboro Electrical Installations, Ltd.- The Mexborough & Swinton Traction Co. has Registered Decem ber 3rd. Capital, £500. called an extraordinary general meeting for Electrical and general engineers and dealers, January 8th at which a Provisional Order for etc. D irectors: S. G . Griffiths, C. O. Smith, which application has been made to the Minister A. W. Main and W. H. Boyd. Regd. office: of Transport will be submitted. This Order 3, Holly Hill, Hampstead, N.W.3. relates to the use of trolley-buses on certain Rolls Products, Ltd.—Registered November routes in the urban districts of Mexborough 29th. Capital, £100. Manufacturers of, and and Conisborough, West Riding. dealers in, electrical apparatus and appliances, The Great Northern Telegraph Co., Ltd., has tools, radio and television equipment, etc. announced an unchanged interim dividend of Secretary: Eileen R. Pinnell. Regd. office: 2£ per cent in respect of the second half of 1946. 22, Charing Cross Road, W.C.2. The Globe Telegraph & Trust Co., Ltd., is Rolls Switches, Ltd.—Registered November again paying an interim dividend of 1 per cent, 29th. Capital, £100. Manufacturers of, and tax free. dealers in, electrical switches and all kinds of December 27, 1946 E l e c t r i c a l R e v i e w 1073

electrical switchgear, tools, radio and television Rowland, and (2) the business of an electrical apparatus and equipment, etc. Other particulars contractor carried on by E. W. Colbourne. similar to Rolls Products, Ltd. Directors: A. R. Rowland, E. L. Rowland, Northern Electronic Industries, Ltd.—Regis­ A. E. P. Knapp and E. W. Colbourne. Secre­ tered November 27th. Capital, £500. To tary: A. Knapp. Regd. office: The Elms, ■■ life acquire the business of retail radio and electric Sompting Road, Lancing, Sussex. : 30thla supply shops now carried on by G. A. Taylor e Jiflig, and R. M. Taylor at 372, Rochdale Road, Collyhurst, Manchester, and 38, Mumps, Increases of Capital Oldham. Directors: G. A. Taylor and R. M. Laurence, Scott & Electromotors, Ltd.— Uti» Taylor. Regd. office: Windsor Works, 349, Increased by £400,000 in 400,000 4J per cent ¡Ity','; Manchester Street, Oldham. non-redeemable preference shares of £1 each (entitled to vote only in special circumstances), *!?« Lewis Battery Service, Ltd.—Registered beyond the registered capital of £700,000. (Note: cemnjg December 4th. Capital, £3,500. Wireless and 6,000 of the company’s redeemable preference television manufacturers and service engineers, shares were redeemed in October.) ireuc etc' Directors: T. R. J. Lewis (permanent governing director), Mrs. L. V. Lewis and W. D. Electrical Components, Ltd.—Increased by Buckingham. Registered office: 6/7, Queen £100,000, beyond the registered capital of Street, Cheapside, E.C.4. £150,000. John Sylvester, Ltd.—Registered December E. P. Allam & Co., Ltd.—Increased by £14,000 beyond the registered capital of £6,000. “T ■ 4th. Capital, £1,000. Manufacturers, assemblers ;M - - and makers of electrical and electronic goods Electron Equipment (Portsmouth), Ltd.—In­ Im k i and equipment, etc. Permanent directors: creased by £4,500 beyond the registered capital “ / ' J- D. Sylvester, D. C. Moore and E. G. Warland. of £500. Regd. office: 89, Wandsworth Bridge Road, C. & D. Electric (Appliances), Ltd.—Increased ¡Hi Strati S.W.6. by £11,000 beyond the registered capital of Electron Engineering Co., Ltd.—Registered £1,000. L December 4th. Capital, £1,000. Maintenance F. J. Lloyd & Sons (Burnham), Ltd.—In­ and installation contractors and engineers, creased by £1,000 beyond the registered capital gistirelD® general, consulting, radio and television en- o f £500. licalisfa gineers, manufacturers of, and dealers in, alcomb®:::, electrical goods, etc. Secretary: F. Dirs, 76, Liquidations isctor>: 11 New Cavendish Street, W .l. Coventry Automatic Telephones, Ltd.—Wind­ Resl ita A. G. Earwicker, Ltd.—Registered December ing up voluntarily. Liquidator, Mr. W. E. (Traiia it 4th. Capital, £3,000. Manufacturers, designers Fordham, 31, Copthall Avenue, London, E.C.2. and repairers of, and wholesale or retail dealers Particulars of claims to the liquidator by tees' in, electrical, radio, television and associated January 7th. This notice is entirely formal as losp apparatus and appliances, etc. Subsctibers: all known creditors have been, or will be, »giiMr: A. G. Earwicker and R. H. Foster. Solicitors: paid in full. lies A. ft« Wills Chandler & Burrows, Basingstoke. Hollinwood Electric Light & Power Co., Ltd.— DeAfife. Folco (Radio Services), Ltd. — Registered Winding up voluntarily. Liquidator, Mr. S. L. LO.Ostfc November 12th. Capital, £1,000. To acquire Stapleton, 1, Sixth Avenue, Limeside Estate, Htoia. the business of radio servicing carried on by Hollinwood, Oldham. : G. R. A. Foil at 18, Rose Bank, Rawtenstall. Larne Electric Light & Power Co., Ltd.— i'aaiBidet® Directors: L. P. Talbot, W. Ashworth, G. R. A. Particulars of claims by January 31st to the ■"'nit ss Jane Foil and J. Ainsworth. . Regd. liquidator, Mr. S. Boyle, 38, Donegall Place, office: Brook Street, Rawtenstall. Belfast. fadfe H. L. Bolton Engineering Co., Ltd.—Registered Bankruptcies SlUM-s November 27th. Capital, £7,000. Electrical, ilmg, li mechanlcal> etc-> engineers, manufacturers of, R. J. Thurlow, electrical engineer, 13, Bolton .. and dealers in, domestic appliances, wireless Lane, Ipswich, carrying on business at 27, 1 77 parts, etc. Directors: H. L. Bolton and Mary Fore Street, Ipswich, as Electrical & Radio ? f r(7. Bolton. Regd. office: 106, Queen’s Head Road, Repair Services.—Trustee, Mr. K. E. Fisk, Birmingham, 21. 13A, Great Colman Street, Ipswich, released Electropower Co., Ltd.—Registered December December 7th, 1946. . . 4th. Capital, £500. M anufacturers of, dealers H. H. Moore, Junior, electrical engineer, in, and agents for, the sale of electrical and “ The Lindens,” West Cliff Gardens, Bourne­ [¡cluitn mechanical apparatus, etc. Directors: L. P. mouth.—First and final dividend of 11s 9d > w®®, Bevan and Mrs. E. W. Bevan, both of 3, Retreat in the £, payable December 30th at 10, Rock- equip»1. dose, Kenton, Middlesex. stone Place, Southampton. Rowland & Colbourne, Ltd.— Registered W. T. Spencer, electrician, 376, Oldham Road, December 13th. Capital, £200. To acquire Newton Heath, Manchester.—Receiving order ¡red m f ( ¡ ) the business of builders and decorators made December 11th, 1946, on a creditor’s dureis et; carrjed on by A. R. Rowland and E. L. petition. i ill to«1 1074 E l e c t r i c a l R e v i e w December 27, 1946

inclined to think that, at the appointed time, STOCKS AND SHARES conditions for reinvestment to maintain the Stock Exchange being closed on Christ- income may be even more difficult than they mas Eve and the two following days, it are now. The contrary view, however, does- was not to be supposed that business in advance not lack supporters. Southern Railway 5 per would show any considerable degree of activity. cent preference has gained 4 points since a The Government’s decision to proceed with month ago. London Passenger Transport the Transport Bill, in the teeth of extensive issues are also better: the “ C ” stock is 1 up opposition, aroused more regret than surprise. at 65^. Thomas Tilling rose abruptly from It had no effect upon the prices of Home 58s. 6d. to 61s. 3d. Railway stocks, and electricity supply shares Changes on the Month have hardly moved from the levels of a week ago. The high-priced preference shares are Cable & Wireless 5) per cent preference at rather easier. The radio group continues dull. 119) has shed 5) during the past month, but On the other hand, the ordinary shares of the the ordinary is a point up at 118. Both classes ' equipment and manufacturing companies remain of Globe Telegraphs have hardened, the 6 per very firm. New issues compete with existing cent preference being 3s. 6d. higher. A rise of stocks and shares, but without having any 3) to 38 in Great Northern Telegraphs has material influence upon the quotations of the reflected a m oderate dem and in a narrow latter. Vague talk of money being still cheaper market. International “ Tel. & Tel.” at 20 in the New Year is responsible for the strength recovered S2 of month’s fall of S3. Marconi that continues to be shown by gilt-edged Marines are a better market, but Canadian securities. M arconis have receded to 13s. 9d. Anglo- American Telegraphs further continued their •? Home Electricity Supply earlier improvements. The radio group has - Business in Home electricity supply shares is, lost favour for the time being: there are falls in -= for this season of the year, fairly active. The Radio & Television, E.M.I., Scophony and same tendency is noticeable as that to which C ossor. E. K . Cole at 29s. 6d., and Plessey attention has already been drawn here. That at 37s. 6d.— the latter on the increased dividend [ is to say, the smaller holder of shares has been, —are two exceptions to the dullness in this and is, inclined to dispose of his interests on market. ^ account of the probably reduced income which Upward Movements nationalization would entail. Trust companies Amongst the notable changes of the past and other large concerns have come, however, month, General Cables are prominent with a e into the market as substantial buyers, in order to 9s. gain at 33s., the dividend having been raised — obtain the Compensation Stock at a lower from 15 per cent to 25 per cent. Tube Invest- — price than that which obtains at the present ments are 10s. higher at 6 § on the expansion time for similar British Government securities. in the company’s interests recently announced. Ljj Cross Currents A rise of 5s. lifted De la Rue to 13J, following ! upon the previous month’s advance of 20s. p* Although no official announcement has been Mather & Platt at 60s. gained 4s. 3d. Johnson made on the subject, it is taken for granted, if & Phillips at 85s. 6d. and Greenwood & Batley r “ prematurely, that any new security issued in at 55s. are 4s. to the good. English Electrics exchange for shares in the Home electricity rose 3s. 6d. to 66s. 6d. Reference to the table supply companies, will take the form of 2 \ per of prices will show a number of other cent stock at 100. Thanks to the cross currents improvements. —the selling by small holders, and buying by institutional investors—the market keeps toler­ Equities on Offer ably steady. As compared with a month ago, On Associated Electrical Industries shares, the majority of changes are against holders, for which are on offer at 74s. 3d., the yield on the which the cuts in electricity and the constant current dividend is now no more than £2 13s. 6d. fears of coal shortage are to some extent per cent—a return which measures the degree responsible. of confidence held in the chances of a more ss; Home R ails liberal distribution next year. Of the other OT2! 1974-94 .. 3* 3 * 111 38 6 LondonElec.Trans. 2* 2* 101* 2 9 3 Greenwood&BatleylS 15 55/- + 4 /- 5 9 1 k -* H.T.A. (10/-) Lond JPass.Trans. B d. 12* 10 21/3 4 14 0 Heatrae (3/-) ¡jeaniti A . . . . 4 * 4* 127* 3 11 0 12* 12* 7/6 -3 d . 5 0 0 Henley’s (5/-) 20 20 28/6 + 6d. 3 10 0 . b ß i B . . . . 5 5 123* + * 4 1 0 4 *% Pref. 4 * 4 * 30/- + 1/6 3 0 0 C . . . . 3 3 65* + 1 4 11 7 Hopkinsons 17* 20 3 17 3 2à s i 5 * Overseas Electricity Companies Intl. Combustion 30 32* 10* + t 3 1 0 Johnson & Phillips 15 15 86/- Atlas Elec. .. Nil Nil 9/9 + 1/- — + 4/6 3 9 9 Calcutta Elec. .. 6* 6 * 51/3 — 3/9 2 6 8 LancashireDynamo2 2 * 22* 6 3 15 0 Cawnpore Elec. . . 13 13 57/6 -II- 4 11 0 Laurence, Scott(5/-)12* 12* 15/6 + 3 d . 4 0 8 London Elec. Wire 7* 42/- . 'cSź'- EastAfricanPower 7 7 47/- + 1/- 2 19 7 7* 3 11 5 ¿«gig. Jerusalem Elec... 5 5 2 4 /- 4 3 4 Mather & P la tt.. 10 10 60/- +4 /3 3 6 8 Metal Industries(B) 9 10 61/3 —6d. 3 5 9 BBSS- Madras Elec. .. 4 6 37/- + 6d. 3 4 9 Montreal Pow er.. 1* 1* 25/- — Mid. Elec. Mfg. .. 25 25 9 * + Ä 2 14 6 + * Murex .. .. 20 Nigerian Elec. .. 10 12* 47/6 + 5/6 5 9 3 20 97/6 + * 4 2 0 Xewman Ind.(2/-) 22* ¿jflÖ*1 PalestineElec.“A” 5* 6* 36/6 3 5 6 22* 9/6 + 3d. 4 14 6 Plessey (5/-) . . 20 30 a* Oí 3 Perak Hydro-elec. 6 7 15/- — 37/6 + À 4 0 0 Power Securities. 0 G Tokyo Elec. 6% . 6 6 44* — 5 — 32/— 3 15 0 Pye Deferred (5/-) 25 25 32/6 3 17 0 V ictoria F allsPo werl 5 19 5 * + t 3 6 0 ■ S M Radio

Dividend Middle Month’s Dividend Middle Month’s Price Rise Yield Price Rise Yield Company Pre­ Dec. or p.c. Company Pre­ Dec. or p.c. vious Last 18 FaU vious Last 18 Fall

Equipment and Manufacturing (Continued) £ s. d. Traction and Transport (Continued) £ s. d. T.C. & M. . . 10 10 55/— + -ft- 3 12 9 T. Tilling . . 10 10 61/3 + 3/3 3 4 0 TelephoneMfg.(5/-) 9 9 14/6 + 1/- 3 2 1 West Riding . . 10 15 52/6 -1 1 - 5 14 3 Thorn Elec. (5/-) 20 20 30/- 3 6 8 Telegraph and Telephone Tube Investments 20 224- 6 # + 10/- 3 8 2 Vactric (5/-) .. Nil Nil 18/- + 6d. — Anglo-Am. Tel. : 6 1471 + 4 4 1 6 Yeritys (5/-) . . 74 n 81- 4 13 10 Pref...... 6 WalsallConduits(4/-)55 55 58/- + 21- 3 15 10 Def...... 11 H 371 + 2 4 0 0 Ward & Goldstone Anglo-Portumiese 8 8 28/6 — 6d. 5 12 4 (5/-) .. ..25 35 53/- + 1 /- 3 6 0 Cable & Wireless : Watford (2/-) .. 15 15 7/9 + 6d. 3 19 0 51 Pref. . . 51 54 1191 - 5 1 4 12 0 WestinghouseBrake 14 14 78/9 3 11 1 Ord...... 4 4 118 + 1 3 7 10 West, Allen (5/-) 71 7* 10/- + 6d. 3 15 0 CanadianMarconiSl Nil 4 cts. 13/9 — tV — Globe Tel. & Tel. : Traction and Transport Ord...... 81* 5 * 46/6 + 1/6 2 3 5 Brit.Elec.Traction : Pref...... 6 6 39/6 +3 /6 3 0 8 Def. Ord. . . 45 45 1230 + 10 3 9 3 GreatN orthernTel. Pref. Ord. .. 8 8 195 + 3 4 2 1 (£10) . . ..20 18 38 + 34 4 14 9 Calcutta Trams.. 61 74 55/6 -2 1- 2 14 0 Inter. Tel. & Tel. Nil Nil 19 + 1 — Cape Elec. Trams 5 6 37/6 3 4 0 Marconi-Marine.. 71 n 33/6 4 9 7 Southern Ely. : Oriental Tel. Ord. 4 4 53/6 - 2 1 - — 5% Prefd. .. 5 5 751 + 1 6 12 3 Telephone Props. Nil 6 21/6 5 11 7 5% Pref. .. 5 5 122* + 4 4 1 8 Tele. Rentals(5/-) 10 10 15/- 3 6 8 * Dividends are paid free of Income Tax.

Stocks and Shares {Continued from p. 1074) are difficulties enough in finding satisfactory alternatives which would maintain the income. per cent. On Plesseys, which can be bought at For the trustee with limited investment powers, 38s. 3d., the return on the recently increased the problem is yet more acute. A pressing dividend is Is. under 4 per cent. Chloride demand has arisen for widening the range of Electrical Storage “ A ” shares are offered in a securities eligible for the investment o f trust small way at 5|. They give £2 18s. per cent on money. Many people consider that the latitude the money. in this respect could be widened without danger, affording much needed relief to those dependent Preference Shares on trust funds from which the income is being A return of 4 per cent is available from the steadily whittled away by redemptions, conver­ recently issued Aberdare Cables 5^ per cent sions and, now, by nationalization. The Govern­ preference, now quoted at 27s. 6d. Brush ment recently refused to assent to the suggestion, 5% per cent preference are on offer at 25s. 6d. but hope is by no means quenched that such to yield £4 3s. 6d. per cent; and Laurence an obvious relief will be accorded later on. Scott 4 i per cents at 23s. 6d. giving £3 12s. 3d. per cent. E. K. Cole 7 per cent preferred ordinary are entitled, after the fixed dividend, D ictograph Telephones, Ltd., point out that to participate up to a further 3 per cent when the reference to their new preference shares in 7 per cent has been paid on the ordinary. They the “ Stocks and Shares ” column of our have received the full 10 per cent in each of the December 13th issue was incorrect. The dividend last four years. At 40s. the shares give a 5 per is 5, not 5-$-, per cent making the yield £4 per cent return on that basis. Yields on the cent, not £4 8s., at the issue price of 25s. preference shares of English Electric and General Electric are in the neighbourhood of 3 per cent. Rather more can be obtained from Contract for Road Signs the less familiar high-priced preference issues. rffcN E o f the largest contracts for road signs Watford Electric 6 per cent 10s. preference are ” " placed in this country has been received by available at 16s., and Electric Construction the Tube Investments’ subsidiary, Gowshall, “ sevens” at 41s. 3d., the respective returns Ltd., for erection in the City of Westminster. being £3 15s. Od. per cent and £3 8s. Od. per cent. The order is for 600 gas and 600 electrically illuminated “ Keep Left ” guardposts designed Trustee’s Headache according to the Report of the Departmental Stock Exchange brokers are confronted every Committee on Traffic Signs and approved by day with cases of genuine distress arising from the Ministry of Transport. The new guardposts, the prospect of a severe cut in income when the which are 4-ft high with both the upper and nationalized stocks are replaced by a presumably lower glass panels illuminated, are the result of much lower-yielding security. For the stock­ some months’ development and tests on the holder with no restriction on his actions, there part of Tube Investments’ engineers. December 27, 1946 E l e c t r i c a l R e v i e w 55

MOTORS GENERATORS

CONTROL GEAR A IR B R EA K OIL IMMERSED HAND OPERATED AUTOMATIC

SWITCHGEAR SW IT C H E S FUSES SWITCHBOARDS A IR B R EA K OIL IMMERSED FANS C EILIN G D ESK and B R A C K ET VENTILATING

OF IMPORTANCE TO YOU LIGHTING FITTINGS In order that we may give you the GAS FILLED best service under the present difficult DISCHARGE conditions we appeal to you to utilise standard equipment, ratings, etc., whenever possible. Your co-operation in this respect will enable us to concentrate on standard production with consequent reduction in despatch time.

USE “ STANDARD”

VERITYS Ltd. 5 Sales Headquarters : BRETTENHAM HOUSE, LANCASTER PLACE, W.C.2 ¡•' W orks : ASTON, BIRMINGHAM 6 E l e c t r i c a l R e v i e w December

HEAVY DUTY FANS.

MECHANICAL DRAUGHT FANS.

SINTERING FANS.

HOVDEN.LJUNGSTROM AIR PREHEATERS.

HO¥DEN TURBULENT F L O W A IR PREHEATERS.

HOWDEN I.C.I. GAS WASHERS.

HOWDEN VORTEX DUST COLLECTORS.

Hoivden auxiliaries for all types of boilers, from the largest power station plant to the smallest industrial installation. HOWDEN

Jam es Howden & Company (Laud) Ltd. 195, Scotland Street, Glasgow. C.5, and 101-105, Baker Street, London, W .l. December 27, 194fi E l e c t r i c a l R e v i e w 1077 Railway Claim« Conditions of Carriage Surveyed B y Graham Saville riTH traffic dispatched by railway goods equipment which can, if the consignor so « service, three sets of conditions are desires, be forwarded under owners risk of principal interest to electrical firms.(or “ B ”) conditions ; some examples are :— These are lettered “ A,” “ B ” and “ E,” and Electric batteries (not containing liquid) ; cover merchandise as follows :— electric lamps or torches (pocket); electric “A” Merchandise (other than dangerous lighting fittings (without lamps) for exterior goods and merchandise for which lighting (without glass) ; electric stoves, terms and conditions are specially grates, heaters and ranges; and regulating provided) when carried by merchandise resistances (except motor starting switches). train at company’s risk rates. Under these conditions the railway “ B ” (a) Merchandise (other than company is not liable for loss, damage, dangerous goods and deviation, misdelivery, delay merchandise for which In view of the increase in or detention of or to a con­ terms and conditions pilferage, loss and damage signment or any part of a are specially provided) it is imperative that the consignment unless it can be when carried by mer­ conditions of carriage proved that it arose through chandise train at should be understood in the wilful misconduct of the owners risk rates; and order that compensation railway company or its ser­ (b) Merchandise which may be obtained vants. Electrical concerns is included in the Classi­ will, however, be interested fication of Goods by merchandise in the three exceptions to this liability train as accepted for carriage at which apply if the railway company is unable owner's risk only. to show that the non-delivery, pilferage or “ E ” Damageable goods not properly misdelivery of goods was not caused by its protected by packing when carried by negligence or misconduct. The exceptions merchandise train at company’s risk are as follows :— rates. (1) Non-delivery of the whole of a consign­ It will be found that a very large proportion ment or of any separate package of traffic is covered under conditions “ A.” forming part of a consignment, In this case the railway company is liable for properly packed and addressed in any loss, misdelivery or damage unless it accordance with the requirements can prove that such arose from any of the of the Standard Terms and Conditions, following circumstances:—Act of God: act unless non-delivery is due to accidents of war or of the King’s enemies; arrest or to trains or to fire. restraint of princes, or rulers, or seizure under (2) Pilferage from packages of mer­ legal process; orders or restrictions imposed chandise protected otherwise than by by the Government or any Department paper or other packing readily remov­ thereof; act or omission of the trader, his able by hand, provided the pilferage servant, or agent; inherent liability to is pointed out to a servant of the wastage in bulk or weight, latent defect or railway company on or before delivery. inherent defect, vice or natural deterioration (3) Misdelivery where merchandise of the merchandise; or casualty (including addressed in accordance with the fire or explosion). requirements of the Standard Terms Even when such loss, misdelivery or damage and Conditions is not tendered to, or arises from any of these causes, the railway placed at the disposal of, the consignee, company, to escape liability, must be able to within twenty-eight days, or in the prove that it used all reasonable care and case of perishable merchandise, within foresight in the carriage of the goods. On a reasonable time which shall not be the other hand, if there has been fraud on less than seventy-two hours after the part of the trader, the railway company is receipt of the consignment by the relieved of all liability. railway company to whom the goods There are various classes of electrical were handed by the sender. 1078 E l e c t r i c a l R e v i e w December 27, 1946 Electrical firms are also concerned with having regard to all the circumstances they the conditions lettered “ E,” as certain types consider it equitable, declare that nothing of electrical apparatus when not conforming in this condition shall be a bar to the with certain packing regulations come under maintenance of proceedings against the this heading. Under these damageable goods company.” conditions, the railway company is not Another important bearing on the possi­ liable for loss or damage except when it can bility of obtaining compensation in the be proved that it arose through the wilful event of loss or damage is the signature misconduct of the railway company or its given for the receipt of merchandise. Where servants, or would have occurred had the there has been obvious damage or pilferage goods been properly protected by packing it is of course essential that the merchandise and the railway company would have been should be signed for “ Damaged ” or with liable had the goods been carried under the some similar remark. It is also generally ordinary company’s risk conditions. advisable that even when the goods are in apparently good order the signature be Observing Time Limits qualified with such a remark as “ Not Perhaps the most important point with examined.” The effect of this is to prevent regard to present day presentation of com­ the railway company from being able to state plaints and claims is to observe the time that it holds a clear signature for the goods. limits laid down. In connection with this It will be recalled that with regard to the there has been an extension of the periods second exception for owner’s risk traffic it is from those which were laid down in the stipulated that the pilferage should be Standard Terms and Conditions of Carriage. pointed out to a servant of the railway In cases of partial loss, consisting of damage, company on or before delivery. In such pilferage, loss, delay or detention, the circumstances it is also advisable that the complaint must now be made within six qualification should be given on the railway days and the claim within ten days of the company’s delivery sheet or warehouse termination of transit. With the loss of a book, but it must also be borne in mind that whole consignment or a complete package the requirement for a written complaint is or packages forming part of a consignment, not complied with by any qualification on the complaint must be made within twenty- railway company’s documents. eight days and the claim presented within forty-two days of the dispatch of the mer­ Miscellaneous Points chandise. There are, of course, a considerable The regulation indicates that all claims number of other points which have to be and complaints must be in writing and attended to if claims are to be successful, addressed either to the forwarding or deliver­ some being the disposal of salvage, the ing stations or to the district or head office protection afforded by the Carriers Act and of the forwarding or delivering railway “ inherent vice.” Consignors will also find company. Recently, railway companies it to their advantage to give full details to the have been very particular in maintaining their railway company when presenting their rights to reject claims which are not made claim, and it will often be found that con­ within these time limits. Provision is, siderable clerical labour is saved by having however, made in the Standard Terms and special forms printed for this purpose. Conditions for dealing with exceptional The conditions of carriage by passenger circumstances which prevent the lodging of train are very similar to those for goods complaints and claims within the statutory train traffic, the only major exception being periods: the appropriate section reads with regard to merchandise carried under “ Provided that if in any particular case owner’s risk conditions. With owner’s risk a trader before action is brought proves to traffic, the railway company is normally the satisfaction of the company, or where only liable in respect of loss or damage the company is not so satisfied, of the arising from wilful misconduct. There are Railway Rates Tribunal, that it was not again exceptions dealing with non-delivery, reasonably possible for him to advise the pilferage and delay similar to goods train company in writing or to make his claim traffic, but in any case the railway liability in writing within the aforesaid times, and is never in excess of 75 per cent of the net that such advice or claim was given within invoice value of the merchandise. a reasonable time, the Tribunal may, if Finally, large electrical concerns may be December 27, 1946 E l e c t r i c a l R e v i e w 1079

it dih interested in Ihe special commuted claims on the traffic covered by the agreement. at tt | agreements which it is now possible to It may be mentioned that the percentage arrange with the railway companies. Under under existing commuted claims arrangements this scheme the trader refrains from lodging has been affected by the increase in railway i ftt [I claims on the railway company, and in return charges and firms having such agreements in ion i ; the railway company makes a bulk payment operation may find it an opportune time to it Sifc to the trader. Normally there is a limit to review the whole scheme in view of the list, % the value of the claims not lodged and the enhanced value of goods generally and the or pi payment by the railway company is in the greater number of cases of damage and loss mitt form of a percentage of the carriage charges now arising. »T’tti

gOOdse NEW PATENTS sigmtc Electrical Specifications Recently Published ik s'! The numbers under which the specifications will i is lop* for self-propelled vehicles.” 19042/44. October be printed and abridged are given in parentheses. 6th, 1943. (582920.) “ Electrical insulators.” igablctoi Copies of any specification (Is. each) may be 23396/45. September 14th, 1944. (582929.) obtained from the Patent Office, 25, Southampton British Thomson-Houston Co., Ltd. Buildings, London, W.C.2. (General Electric Co.).—“ Control of the trans­ nsktnli A KT.-GES. Brown, Boveri & Cie.—“ Multi- mission of electromagnetic waves.” 17456. St sW break electric gas blast circuit-breakers.” October 22nd, 1943. (582848.) “ Noise re­ 17319/44. September 11th, 1943. (582835.) it the i duction in radiolocation and communication Automatic Telephone & Electric Co., Ltd.— systems.” 18439. November 5th, 1943. very, hi “ Telephone substation circuits.” 4793/44. (582849.) “ Pulse generating systems.” 18561. isable to May 10th, 1943. (582801.) November 8th, 1943. (582850.) “ Pulse oafcn. Automatic Telephone & Electric Co., Ltd., generating systems.” 19228. November 17th, or rti and C. E. Beale.—“ Telephone or like systems.” 1943. (582851.) ne inii 17737. September 16th, 1944. (582838.) L. F. Broadway, N. C. Barford and A. F. Automatic Telephone & Electric Co., Ltd., in couple Pearce.—“ Coupling of hollow electrical resona­ and G. A. Burns.—“ Indicating boards for tors.” 10352. June 25th, 1943. (582714.) electric power transmission systems or the N. E. W. Carter.—“ Telephone receivers.” like.” 7845. April 27th, 1944. (582741.) 6311/44. April 5th, 1945. (582735.) R. W. Bailey, P. P. Starling, H. H. Burton, Cinema-Television, Ltd., and H. G. Flood.— oints A. B. Winder, Metropolitan-Vickers Electrical “ Electron discharge devices and methods of Co., Ltd., and English Steel Corporation, Ltd.— manufacturing such devices.” 18621. Sep­ const “ Casting metals.” Cognate applications tember 28th, 1944. (582913.) 7408/40 and 6274/41. April 24th, 1940. (582846.) Farnsworth Television & Radio Corporation. [0 K SMS J. B. Birks.—“ Electromagnetic radiators or —“ Thermionic impulse amplifier." 8929/44. oi sal'«. receivers.” 12864. July 5th, 1944. (582856.) March 18th, 1943. (582744.) R. H. F. Boot and Under Water Welders & General Electric Co., Ltd., and E. Fried- 015 «I Repairers, Ltd.—“ Electric arc cutting devices.” lander.—“ Electrical multi-turn windings.” 4027. March 3rd, 1944. (582731.) 18005. December 18th, 1942. (582888.) lUtdf K. W. Branczik and O. L. B. W estergaard.— D. L. Hings.—“ Radio-frequency generating plESfflBffi • “ Cooling towers.” 3094. February 18th, and modulating systems.” 10326. July 23rd, : foil to 1944. (582727.) 1942. (582795.) British Electricon (London), Ltd., and W. A. V. Hope.—“ Protecting devices for electric Chambers.—“ Electrical relays.” 5959. March circuits and apparatus.” 2676. February 14th, 9th, 1945. (582793.) 1944. (582726.) British Thomson-Houston Co., Ltd.— H. W. K. Jennings (B. F. Sturtevant Co.).— “ Electromagnetic wave propagation systems.” “ Dust collecting apparatus." 11910. May 6159/43. April 16th, 1942. (582757.) “ Im­ 11th, 1945. (582883.) in am- pedance transformer systems.” 17310/43. Landis & Gyr Soc. Anon.—“ Contacts of October 24th, 1942. (582760.) “ Secret carrier electrical switches.” 13003/44. July 13th, 1943. (582817.) my s ® wave signalling systems.” 19732. November Marconi's Wireless Telegraph Co., Ltd.— loss » to 25th, 1943. (582798.) “ Electric insulating compositions.” 20287/43. December 7th, 1942. “ Combined transmitter and receiver for radio tact W (582799.) “ Washing machines.” 6431/44. signalling." 2827/44. February 15th, 1943. tl non* April 9th, 1943. (582804.) “ X-ray generating (582766.) "Oscillation generator.” 3108/44. to go* apparatus.” 13881/43. August 26th, 1942. February 20th, 1943. (582767.) “ Switching in aiIwylfc (582889.) “ Insulating bushings for electrical wave guide transmission systems.” 3487/44. ¡sat of to apparatus.” 18797/44. October 1st, 1943. February 25th, 1943. (582768.) “ Apparatus for controlling the velocity of a cathode-ray se. (582915.) “ X-ray tubes.”' 18798/44. October (582916.) “ Headlight indicators beam.” 1725/44. January 30th, 1943. (582892.) cens 0 2nd, 1943. 1080 E l e c t r i c a l R e v i e w December 27, 1946

P. L. Millwood and E. A. Cox.—“ Automatic Under Water Welders & Repairers, Ltd.. kettles or electrically heated water boiling and R. H. F. Boot.—“ Electric arc welding." receptacles." 6715. April 12th, 1944. (582897.) 6773. April 12th. 1944. (582769.) M-O Valve Co., Ltd., and R. W. Sloane.— F. E. Waller.—“ Lamp supports.” 18647. “ Velocity - modulated frequency - changers.” September 29th, 1944. (582914.) 9479. July 25th, 1941. (582886.) F. Watson (Aktiebolaget Ljungstroms Ang- Mullard Radio Valve Co., Ltd., J. A. M. Van turbin).—“ Turbines.” 14725. August 2nd, Moll, A. J. Van Hoorn and G. L. Sutherland.— 1944. (582825.) “ Methods of applying emissive coatings to the W estinghouse Brake & Signal C o., Ltd. cathodes of electron discharge devices.” 3779. (Union Switch and Signal Co.).—“ Electrical February 29th, 1944. (582729.) control apparatus.” 17723. October 27th, Siemens Bros. & Co., Ltd., and B. A. Hensler. 1943. (582761.) —“ Telephone systems.” 13599 July 17th, 1944. Westinghouse Electric International Co.— (582786.) “ Protective systems for X-ray apparatus.” Soc. Anon, des Industries Radio-Electriques 10902/43. July 7th, 1942. (582715.) (S.A.D.I.R.).—“ Arrangements of aerials for H. G. White, A. Middleton and Metropolitan- radio-beacons.” 3674/42. May 29th, 1941. Vickers Electrical Co., Ltd.—“ Resilient gear (582755.) wheels.” 18277. September 25th. 1944. (582878.) Standard Telephones & Cables, Ltd.— F. C. W illiams.— “ Electronic relay circuit “ Arrangements for ensuring a given angular arrangements.” 10351. June 25th, 1943.(582758.) relation between the rotors of two electric Amended Specifications motors.” 1677/44. February 6th, 1943. (582724.) “ Cathode-ray oscillograph circuits.” 535127. Marconi’s Wireless Telegraph Co., 17689/44. September 23rd, 1943. (582836.) Ltd.—“ Antenna circuit modulation systems.” Standard Telephones & Cables, Ltd. (Inter­ 570188. H. G . Solom on.— “ Electric con­ national Standard Electric Corporation).— densers more particularly intended for the “ Means for amplifying and translating electrical production of h.f. impulses and for use in impulses.” 14669. November 14th, 1941. h.f. circuits.” (582753.) Standard Telephones & Cables, Ltd., and C. W. Earp.—“ Arrangements for obstacle Forthcoming Events detection and measurement of distances by Friday, January 3rd. — Birmingham. — electromagnetic waves.” 4506. April 3rd, Imperial Hotel, Temple Street, 6 p.m. Illuminat­ 1942. (582708.) ing Engineering Society (Birm ingham Centre). Standard Telephones & Cables, Ltd. (trading “ Industrial Decoration,” by J. H. Nelson. as Stanelco Products) and J. Handley.—“ Elec­ Monday, January 6th. — Birmingham. — tric soldering apparatus.” 15926. August 21st, Jam es W att Institute, 6 p.m. I.E .E . South 1944. (582829.) M idland Centre. “ Development and Design Standard Telephones & Cables, Ltd., and of Colonial Telecommunications Systems and M. M. Levy.—“ Electrical oscillation genera­ Plant,” by C. Lawton, and “ General Planning tors.” 3881. March 21st, 1941. (582752.) and Organization of Colonial Telecommunica­ “ Apparatus for measuring the duration of tions System s,” by V. H. Winson. (Joint electric impulses or signals.” 969. January meeting with the Institution of Post Office 24th, 1941. (582885.) Electrical Engineers). Standard Telephones & Cables, Ltd., and L o n d o n .— A t the Institution of Electrical J. D. Weston.—“ Means for discriminating Engineers, 2, Savoy Place, W.C.2, 5 p.m. between complementary keyed electrical Institution of Post Office Electrical Engineers. signals.” 13497. July 14th, 1944. (582784.) “ The Provision of Line Communications for Standard Telephones & Cables, Ltd., P. K. the Fighting Services,” by H. R. Harbottle. Chatterjea and L. W. Houghton.—“ Secrecy B r a d f o r d . — Technical College, 7.15 p.m. communication systems.” 14938. October Bradford Engineering Society. “ Fuel Economy 23rd, 1942. (Addition to 580843.) (582709.) in Facts and Figures,” by W. Goldstern. Standard Telephones & Cables, Ltd., W. J. L. Tuesday, January 7th. — M anchester. — Wildbore and J. M. Kennan.—“ Wire lapping Engineers’ Club, Albert Square, 6 p.m. I.E.E. or like core-covering machines.” 18577. North-W estern Centre. “ The Influence of September 28th, 1944. (582911.) Resistance Switching on the Design of High- P. P. Starling, H. H. Burton, A. B. Winder, Voltage Oil Circuit Breakers,” by H. E. Cox Metropolitan-Vickers Electrical Co., Ltd., and and T. W. Wilcox. English Steel Corporation, Ltd.—“ Production L o n d o n .— Oddfellows' Hall, 186, Hammer­ of metal castings.” 13194. August 19th, 1940. smith Road, S.W., 7. p.m. Association of (582847.) Supervising Electrical Engineers (West London T. W. Tattersall.—“ Switching arrangements Branch). “ Some Applications of Electricity and for electric vehicles.” 2257. February 7th, G as.” 1944. (582893.) G l a s g o w . — Ca’doro Restaurant, Union W. E. Tomlin.—“ Washing machines.” Street, 7.30 p.m. Electrical Society of G lasgow . 7059/44. April 17th, 1945. (582739.) “ Power Factor Correction,” by R. H. Bannister. D e c e m b e r 27, 1946 Electrical Review 1081 RECEXT LXTRODITTIOXS Notes on New Electrical and A l l i e d Products

Plunger Switch with caterpillar tracks for mobility and capable yS N industrial switch which can be employed of being driven either by a miniature petrol w®- in place of a distant push-button for engine, or by a 1-5 H.P. three-phase motor of starting and stopping motors driving weaving 400 440 V at 2,800 r.p.m. through an enclosed loom s and machine 'V igglesworth belt. The motor is mounted tools, is being made upon a steel frame above the TM-6 exhauster, by British Klock- of the multi-stage turbine type, with six NER SWTTCHGE AR, impellers on a shaft running in ball bearings. L t d . , of Guildford The 36-in. filter container has a removable top St.. Chertsey, Surrey. to enable the internal dust bag to be emptied. It is operated byr An assortment of cleaning tools and brushes the depression o f a is prosided, but an extra charge is made for plunger, which must single-phase motor drive. remain depressed while the machine Automatic Oven Control All household cookers supplied by the Plunger switch for actuating motor General Electric Co., Ltd., Magnet House. sta rte r Kingsway, London, W.C.2, are eventually to be fitted with “ Ovenmaster ” automatic control is running; us re- as a standard feature. When possible the DC.6 lease will stop the M b thermostat is to be replaced by the DC.29, w hich is smaller and will be used in conjunction This " L AT ” type with either of two control units, the DC.38 for switch is most useful the new’ DC.113 cooker and the DC.39 for the when the m otor is older cast-iron type. controlled by a lever |B In both arrangements the thermostat is housed that also actuates a in a moulded bakelite case with electrical mechanical brake, connections brought out to external terminals because application of the latter will auto­ for easy connection in the wiring chamber. matically stop the motor and prevent its restart­ The movement of the expanding member of the ing until the brake is released again. This switch thermostat is conveyed to a quick make-and- merely furnishes impulses to the normal starter, break switch capable of controlling 15 A at so that the latter will maintain its no-volt 200 to 250 a.c., the setting knob, which moves protective circuit (when included) through over a calibrated scale, being coupled to the separate contacts provided for the purpose. The thermostat through a connecting rod. The hard brass plunger can be fitted with a rocker thermostat can be set to operate at any tem­ roller attachment, if desired. The housing is perature between 200 and 550 deg F. die cash of a zinc base alloy, being 3 in. wide by The new control is standard equipment on 5 in. long and T5 in. deep; two 0’75 in. tapped conduit entries are provided. Animal Grooming Equipment It does not seem to be gener­ ally appreciated that a suction cleaner can be an effective means of grooming animals, as well as of cleaning farm buildings, harvesters, reaping machines and food carts, and the collection of grain. A suitable machine for these purposes is one of the industrial models made by the British Vacuum Cleaner A Engineering Co., Ltd.. Goblin Works, Leatherhead. Surre> The equipment is mounted on a small push-handle base fitted Grooming a racehorse with a suction machine 1082 E l e c t r i c a l R e v i e w December 27, 1946 the DC.113 cooker and will be fitted to the Although the instrument indicates the peak DC.438, 100 and 105 models, but it cannot be value of the wave, it is calibrated in r.m.s. volts, fitted to all G.E.C. cookers and the following assuming a sinusoidal input. The short-period will still use the DC.6 thermostat: DC.334, overload capacity is extremely high; even if 434, 734, 1034, 435 and 735. full mains voltage, say 440 V, is accidentally applied to the lowest range (15 mV) no damage Domestic Convector will result if the instrument is disconnected Hitherto De Renzi Holmes & Co., Ltd., Fox’s quickly. The greatest overload which can Lane, Wolverhampton, have concentrated their possibly be applied to the moving coil approxi­ production on rustless unbreakable grid resist­ mates to 100 per cent and is not sufficient to ances, cam-operated contactor controllers, slider burn out the coil, even if continued indefinitely. pattern rheostats and The m easuring ranges are 15, 50, 150 and welding rheostats. 500 mV and 1-5, 5, 15, 50 and 150 V, the Recently, however, consumption being 50 W at 200-250 V and the company has 40-100 c/s. The resistive component is approxi­ entered the domestic mately one megohm throughout the frequency market with a neatly- range and input capacitance is approximately designed 2-kW con­ 20 picofarads. The indicating instrument is vector. of robust moving coil design with an open Measuring 28} in. 5-in. scale which is appreciably longer than is high by 18} in. wide usually provided in instruments of the valve- by 6} in. deep, this voltmeter class. The net weight of the milli­ “ Deren ” convector voltmeter in its polished walnut case is 27} lb is available in six and it measures 16 x 10 x 10} in. attractive finishes, blue, pink, green, Anti-frost Refrigerator Windows bronze, silver and A glass screen which perm its good visibility cream. Special ele­ at a tem perature equivalent to 125 deg frost ment units are being has been evolved for experimental refrigerating made up of mica and plant by the Triplex Safety G lass Go., Ltd., nickel-chrome wire Eckersall Road, King’s Norton, Birmingham, construction of an being an adaptation of the principle used to improved shape. [ Deren ” convector prevent aircraft windscreen “ mist up,” which Four elements are obscures the pilot’s vision. The company arranged vertically in the base of the convector overcame this problem by means of thoroughly with gills between each in order to provide a dried air enclosed in hollow chambers. The greater heating surface and so accelerate the flow adaptation of this method will be useful for of hot air, the temperature of which at the vent is industrial and scientific units necessitating approximately 150 deg C. A switch is provided observation of results during refrigeration. in the front whereby 1 or 2 kW may be brought into use at will, and there is a red pilot lamp to indicate when the apparatus is switched on. A Export Inquiries similar 1-kW model measures 15} X 11 X 5 in. WB/E have received the undermentioned Audio-frequency Millivoltmeter inquiries regarding agencies for British A convenient instrument for measuring in electrical equipment and appliances or to import a simple way the small voltage drop that occurs them into the territories named. We shall be in a.c. circuit-breaker contacts, busbar connec­ glad to pass on replies received from readers tions, heavy duty cable links, etc., is available which should be addressed to the Editors, from the General Electric Co., Ltd., M agnet quoting the number given in parentheses. We House, Kingsway, London, W.C.2. The instru­ cannot vouch for the standing of inquirers and ment is really an audio-frequency (25 to m anufacturers replying to them will no doubt 20,000 c/s) millivoltmeter for high impedance require the usual references :— circuits in communication equipment and China.— London exporters to China wish to sonic-frequency amplifying apparatus, its get into touch with makers of 5-A, two-pin accuracy being approximately 3 per cent full plugs and sockets, 5-A s.p. switches, side-entry scale reading on all ranges with true sine wave iron connectors and lampholders—all of output. bakelite. (X.169.) The circuit comprises a two-stage amplifier India.—A representative from India now in with negative feed-back which stabilizes the gain England is seeking agencies for medium-sized at 100, and is followed by a diode rectifier firms who are not yet represented in India. and a d.c. amplifier with a degenerative action, He is interested in small motors, fans, domestic so eliminating errors due to change in valve appliances, electrical accessories, fluorescent parameters. The amplifier is connected in a lamps and fittings, incandescent lamps, small bridge circuit and the out-of-balance current ironclad switchgear and scientific electrical indicates the voltage. novelties. (X.170.) December 27, 1946 E l e c t r i c a l R e v i e w 1083 CONTRACT INFORM ATION Accepted Tenders and Prospective Electrical Work

Southport.—Estates Committee. Accepted. Contracts Open Electrical installations in 66 houses at Rufford Where “ Contracts Open ” are advertised in our Road (£1,922).—Brooks & Southworth. “ Official Notices ” section the date of the issue is given in parentheses. Stalybridge.—Markets Committee. Accepted. Electric lighting installation at Victoria Market Dundee.—January 15th. Corporation. Multi­ Hall (£180).—Phillips Electricity Supplies, Ltd. core, high- and low-voltage paper-insulated cables. (See this issue.) Swansea.—Electricity Committee. Accepted. Chlorination plant (£4,968).—Wallace & Gainsborough.—Electricity Department. One Tiernan. Modification of milling plant of 6-6-kV switch unit. (See this issue.) boilers at Tir John station (£20,930).—Inter­ Isle of Ely.—January 4th. County Council- national Combustion. Six 750-kVA trans­ Installation of electric lighting at the Orchards formers (£4,998).—British Power Transformer Nursery, Wisbech. R. D. Robson, county Co. architect, County Hall, March. Kingston - upon - Thames. — January 13th. Contracts in Prospect Borough Council. Self-interlocking type Particulars o f new works and building schemes for underground cable covers. (See this issue.) the use of electrical installation contractors and traders. Publication in this section is no guarantee London.—Metropolitan Water Board. New that electrical work is definitely included. Alleged or second-hand alternators, three-phase, inaccuracies should be reported to the Editors. 400/440 V, for coupling to Diesel engines running at 600 r.p.m. (eighteen approximately Ashton-under-Lyne.—Two nurseries, welfare centres and clinics (£17,500); A. T. Kemp, 200 kW and six approximately 300 kW). borough surveyor. (December 13th.) Bedlington (Northumberland). — Factory for Newark-on-Trent.—January 16th. Borough Welwyn Laboratories; W. Stockdale, 73, Council. P.i. and armoured cable. (December Howard Street, North Shields. 13th.) Birmingham.—Motor omnibus garage, Quin­ North Scotland.—January 20th. Hydro- ton; general manager, City Transport Depart­ Electric Board. High- and low-voltage distribu­ ment, Congreve Street. tion lines (wood poles) on the island of Arran. (December 13th.) Blackburn.—Departmental stores, Victoria Street and Church Street; Littlewoods Mail Weymouth and Melcombe Regis.—Electricity Order Stores, 100, Old Hall Street, Liverpool. Department. Two 500-kVA three-phase trans­ formers. (See this issue.) Brampton.—Houses (50), Cotehill, for Bramp­ ton Public Society; J. Millar & Sons, builders, 15, London Road, Carlisle. Orders Placed Brighton.—Adaptation of Buckingham House, Carlisle.—Electricity Committee. Accepted. Shoreham, as children’s nursery (£12,000); Transformers (£3,104). — Yorkshire Electric borough engineer. Transformer Co. Buckingham.—Houses (30) for R.D.C. Dartford.—Electricity Committee. Accepted. (£43,948); Y. J. Lovell & Son, Ltd., builders, Extension panel (£302).—A. Reyrolle & Co. Marsham Lane, Gerrards Cross. 450-kVA transformer (£517).—Hackbridge Elec­ tric Construction Co. Chesterfield.—Houses (500), at Eckington, for R.D .C.; J. B. Wikeley, surveyor, Rural Council Hackney.—Electricity Committee. Accepted. House. Air heater elements (£2,610).—International Clay Cross.—Hosiery factory, Bridge Street; Combustion. John Smedley, Ltd., Lea Mills, Matlock. London.—Metropolitan Water Board. Ac­ cepted. Fluorescent lighting at Battersea works. Clitheroe.—Houses (32) for R.D.C. (£42,176); —Carlin Engineering Co. (£3,988); G.E.C. W. Houghton & Sons, builders, Tower House, (£3,008). Three electrically driven pumps for Grimsargh, Preston. Cricklewood works (£10,929).—Harland Engin­ Dalton. — Works for Imperial Chemical eering Co. Industries, Ltd.; John Mowlem & Co., Ltd., Paisley.—Corporation. Accepted. Electrical builders, 91, Ebury Bridge Road, Pimlico, London, S.W.l. installation at the Saucel Hill housing scheme (£1,893).—Henry C. Mort. Dartford.—Houses (102), Temple Hill estate Salford.—Light, Heat and Power Committee. (£132,537); Gough-Cooper & Co., Ltd. Accepted. Transformers for twelve months.— Denton (Lancs).—Public baths; J. B. Cooke, Bryce Electric Construction Co. surveyor, Town Hall. 1 084 E l e c t r i c a l R e v ie w D e c e m b e r 27 , 1946

Easington.—Central bus station at Easington North Riding.— Schools at Whitby and Village; R.D.C. surveyor. Ormesby (£70,000); county architect, County Erith.—Houses (42), Riverdale Road and Hall, Northallerton. Lesney Farm estate (£49,340); H. Friday & Perth.—Houses (560); burgh surveyor. Sons, Ltd., builders, Northend Works. Plymouth.—Reinstatement of wards at city Felling-on-Tyne.—Bottling factory for A. hospital, flats at Peel Street, Stonehouse, and Towers & Co., Temple Street, Newcastle; part of Salisbury Road School; city architect, E. M. Lawson, Barras Buildings, Barras Bridge, Weston Lodge, Seymour Road. Newcastle. Portland.— H ouses (54), Pound Piece, for Fence Houses (Co. Durham).—Factories on U.D.C.; Kent & Sussex Contractors, Ltd., new trading estate for North-Eastern Trading Carlton Road, Erith. Estates, Ltd., Gateshead; Mauchlen & Weight- Prescot.—Houses (200), Bryer estate; U.D.C. man, architects, 12, Saville Row, Newcastle-on- surveyor, Council Offices, High Street. Tyne. Redditch.—Three schools and Grammar Filton.—Nursery school; county architect, School; L. C. Lomas, county architect, 60, Shire Hall, Gloucester. The Tything, Worcester. Foleshill (Coventry).—Rebuilding works, Rushden.—Permanent houses (120), Higham Kingfield, for J. & J. Cash, Ltd., textile manu­ Road estate; surveyor, Council Buildings. facturers; J. Parnell &* Son, builders, Oliver St. Helens.—Factory for Tootal-Broadhurst Street, Rugby. Lee Co., Ltd., Manchester; R. T. James, Glasgow.—School buildings at Cardonald consulting engineer, 6, Lower Grosvenor Place, (£40,000), at Bernard Street Junior Secondary London, S.W.l. School (£45,000), and at Whitehill Junior Sheffield.—Works extensions, Stocksbridge; Secondary School (£50,000) for Corporation Samuel Fox & Co., Ltd., steel manufacturers, Education Department; city architect. Stocksbridge. Golborne.—Houses (80) and bungalows (10), Shildon (Co. Durham).— Factory for the Barry Derby Road site, for U.D.C.; A. Clough, Manufacturing Co.; W. Moss & Co., St. surveyor. Mary’s Place, Newcastle-on-Tyne. Heywood.—Works additions; Ames Crosta South Shields.—Rebuilding of war-destroyed Mills & Co., Ltd., Moss Ironworks. stores in King Street for F. W. Woolworth & Co., Horden Colliery (Durham).— Kitchen for Ltd., London. 2,000 meals; J. Berriman, Fence Houses, Co. Three dining rooms at Mortimer secondary Durham. and primary schools ; borough engineer. Jarrow.—Garage, Station Street, for the Houses (152), Cussins type; Gustavus Northern General Transport Co., Ltd., Chester- Bailey, Ltd., builders, King Street. le-Street. Stalybridge.—Garage and workshop, Tame Houses (146), Bilton Hall estate ; H. W. T. Valley, for Joint Transport Committee; S. T. Perkins, borough engineer. Davies, acting transport manager. Kearsley.—School canteen (1,000 meals), Stanley (Co. Durham).—Houses (42), Pike Lord Street; G. Noel Hill, county architect, Street, Dipton ; U.D.C. surveyor. County Offices, Preston. Stourbridge. — Extensions to Children’s Keighley.—Houses (100); Thomas Feather & Homes, Clent Grove, Clent; secretary to Co. (Bradford), Ltd., builders, Six Lane Ends, Sunfield Homes Trustees, Clent. Bradford. Sunderland.—Two factories on the Pallion Kelso.—Housing scheme (electric), for Town Estate, for North-Eastern Trading Estates, Ltd.; Council; borough engineer. R. G. Finlay, Ltd., builders, West Sunniside. . Lambeth.—Houses (46), Elder Road Tynemouth. — H ouses (50); J. H. Rogers, (£71,473); borough engineer. Queen Alexandra Road, North Shields. Leith.—Building to house radar equipment Wadebridge. — Houses (28) for R.D.C.; for Leith Nautical College; principal. W. E. Blackwell, clerk, Council Offices. Liverpool.—Houses (73), Woolton (£81,954); Walsall.—County and nursery schools, Har­ J. W. Jones & Sons, Ltd., builders, 158, Allerton den Road (£75,132); borough engineer. Road, Wavertree. H ouses ( 1 0 0 ) , Dudley Fields estate (£136,080); Newcastle-on-Tyne.—Houses (114), at Walker, Tarslag, Ltd., Wolverhampton. for City Council; Harvey & Co., Milburn Watford.—Houses (1,000), L.C.C. Oxhey H ouse. estate (£1,498,044); Unit Construction Co., Newcastle (Staffs).—School kitchen and dining Ltd., Westminster. hall, Ellison Street Schools; A. Cotton, schools West Hartlepool.—Eleven primary schools; architect, Lancaster Building. borough engineer. Ice-cream factory; Cotton, Son & Richards, Worsborough. F acto ry ; Johnson & Barnes, architects, Tunstall. Ltd., hosiery manufacturers; Stapleford, Notts. December 27, 1946 E l e c t r i c a l R e v ie w 57

Which Stop Nut will you choose— Simmonds or Pinnacle— fibre collar or metal diaphragm ? The Pinnacle is the newer product and has some advantages over its older brother. But there are still many conditions which are best satisfied by the fibre collar of the Simmonds Nut. Simmonds have learned the virtues and limitations of Stop Nuts in the only school that matters—the school of experience; ten solid years of it. In that time 90% of Stop Nuts used in British Industry have been supplied by Simmonds. We don’t need to tell you that all we know, all we have learned is at your service. And you can be sure of an unbiased opinion because we design and make both types of nut; and—in our modest way—have no doubt at all that we make the best o f both.

SIMMONDS STOP NUTS

Simmonds Aerocessories Lim ited ■ Great 11 7esl Road • London • A Company o f the Simmonds Gump 58 E l e c t r i c a l R e v ie w December 27, 1946

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Sots the three with your nearest fuses in the transformer, * ooe to each cole G.E.C. Branch for os the second­ ary side, thus complying folly all requirements 1 with I.E.E, T'; R e g u la t io n s in Bell installation So. 210. material

D F AAP AARPD there is no substitute for quality ; Kfc/Vlt/VlDllrv in everything electrical

Advt. of The General Electric Co. Ltd., Magnet House, Kingstoay, London, W.C .2 December 27, 1946 E l e c t r i c a l R e v ie w 59 -CLASSIFIED ADVERTISEMENTS- A D V E R T IS E M E N T S for insertion in the following REPLIES TO advertisements published under a Friday’s issue are accepted up to First Post on Box Number if not to be delivered to any particular Monday, and should be addressed to Classified Advertisement Department, Dorset House, Stamford firm or individual should be accompanied by instruc­ Street, London, S.E.l. tions to this effect, addressed to the Manager of the THE CHARGE for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in is 2/6 per line (approx. 7 words) per insertion ; ONLY such cases cannot be returned to them. The name OFFICIAL AND GOVERNMENT ANNOUNCE­ of an advertiser using a Box Number will not be MENTS CAN NOW BE DISPLAYED:— 35/- per disclosed. All replies to Box Numbers should be inch. Where the advertisement includes a Box 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 ELECTRICAL REVIEW, Dorset House, Stam­ SITUATIONS WANTED. — 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 ELECTRICAL two if ordered and prepaid with the first insertion. REVIEW LTD. and crossed, Original testimonials should not be sent with applications for employment.

SURREY COUNTY COUNCIL Please address Selected Contractors A List of Contractors is now being prepared for the your envelope . . Council’s building and maintenance works. Con­ tractors and manufacturers are therefore invited to make application for consideration in respect of one or more of CLASSIFIED the following classes of work or materials :— 1. General building. ADVERTISEMENT DEPT. 2. Redecorations and repairs. 3. General maintenance and repairs. 4. Tar paving and tar macadam. 5. Heating, hot water and gas installation. OFFICIAL NOTICES f TENDERS, ETC . 6. Electrical installations. 7. Fencing and railings and gates. ROYAL BOROUGH OF Kl NGSTON-UPON-TH AMES 8. Lifts. 9. Refrigeration and cold storage. rpENDERS are invited for the supply and delivery of 10. Sterilizing and disinfector plant. self-interlocking type Underground Cable Covers. 11. Swimming pool filtration and treatment plants. Tenders and all documents (which must be in plain sealed 12. Water softeners. envelopes not bearing any name or mark indicating the 13. X-ray apparatus and hospital equipment. sender), endorsed “ Tender for Cable Covers." must be 14. Land works. delivered to the Borough Electrical Engineer. 17, High 15. Cooking equipment. Street. Kingston-upon-Thames, from whom specification 16. Structural steel. and form of tender may be obtained. 17. Reinforced concrete. Tenders must be delivered before noon on Monday, the 18. Masonry (natural and artificial). 13th January, 1947. No tender will be considered which 19. Ironmongery. does not comply with the above conditions, and the 20. Sanitary fittings. Council do not bind themselves to accept the lowest or 21. Roof tiling and slating. any tender...... 22. Joinery. A. W. FO R SD IK E. 23. Plastering (general and fibrous). Guildhall. Eangston-upon-Thames. Town Clerk. 24. Asphalte, etc., water proofings. December. 1946.______4103 25. Paints, varnishes and distempers. 26. Floor finishing (all types). GAINSBOROUGH U.D.C. ELECTRICITY DEPT. 27. Patent roof coverings. 28. Metal windows. ENDERS are invited for the supply and delivery of 29. Plumbing installations. T one Outdoor 6.6-kV Switch Unit consisting of one Those contractors applying in connection with Items 1. air break isolator and two oil circuit breakers. 2 and 3 should state the limit of cost (maximum and/or Specification and form of tender may be obtained on minimum) of work for which they are prepared to tender, application to Reg. C. Hammersley. A.M.I.E.E.. Engineer and also some indication of the labour force normally and Manager, Electricity Offices, Lord St., Gainsborough. employed. The Council does not bind itself to accept the lowest or Applications should be addressed to the County Archi­ any tender. e r i c r m q r g a n tect, County Hall. Kingston-on-Thames, to be received not later than 31st January, 1947. Lord St., Gainsborough. Clerk of the Council. DUDLEY AUKLAND. Clerk of the Council. 11th December. 1946. 41uz ______4077 BOROUGH OF WEYMOUTH AND MELCOMBE REGIS SITUATIONS VACANT ELECTRICITY DEPARTMENT FIRST GARDEN CITY LIMITED TENDERS are invited for the supply and delivery of JL two 500-kVA . 11.000/ 415 / 240-volt. 3-phase Trans- r p H E following vacancies are open:— ormers. Copies of specification may be obtained on J- (a) FIT T E R AND TU R N ER for general maintenance «plication to the Borough Electrical Engineer. The lowest work, experience with Brush-Ljungstrom turbines de­ )r any tender will not necessarily be accepted. sirable. T. WHITEHOUSE. A.M.I.E.E.. (b) FIT T E R for water-tube boiler and pump main­ Slectric House. Borough Electrical Engineer. tenance. experience with Babcock & Wilcox stoker-fired units desirable. Westham Road. Weymouth. „ Rates of pay 2s. 4d. per hour for day work, plus extra 12th December. 1946. for superior ability and experience. THE CORPORATION OF DUNDEE (c) CONTROL EN G IN EER , experienced with E.H .T. feeders and turbo-altemators. also D.C. rotary plant, rate HE Dundee Corporation invites tenders for^multicore 2s. 7Jd. per hour for shift work. H V and L.V. Paper-insulated Cables. Particular» The above to be in accordance with J.I.C. (No. 9 Area) he obtained on application to the City Electrical conditions : subsistence allowances will be considered pend­ rin^r. Tenders to be lodged with the Town Clerk. ing permanent settlement in the district. Applications to 7 Chambers. Dundee, not later than loth January. 1941. the undersigned by 11th January, 1947. p PHILIP. M.I.Mech.E.. M.I.E.E.. W. A. BROWN. Jhope Crescent Rdi, City Electrical Engineer.^ Works Road. Electrical Engineer and Manager. Letchworth. Herts. 4060 >undee. 60 E l e c t r i c a l R e v ie w December 27, 1946

BOROUGH OF CHELTENHAM ELECTRICITY DEPT. BOROUGH OF SCUNTHORPE ELECTRICITY DEPT.

A PPLICATIONS are invited from Corporate Members Appointment of Chief Technical Assistant of the Institution of Electrical Engineers for the following appointm ents: — A PPLICATIONS are invited for the above appointment (1) DEPUTY ELECTRICAL ENGINEER AND from Engineers who are Corporate Members of the MANAGER. A sound training, wide experience and I.E .E . or who possess equivalent technical qualifications, progressive record in the technical development and and are not more than 45 years of age. Applicants should administration of large or medium-sized undertakings in have had a thorough training and experience in electricity the electricity supply industry is essential. The salary supply, preferably with a Lcjcal Authority. They must will be in accordance with Grade 1, Class G. of the be conversant with the design, construction, operation National Joint Board Schedule (at present £833). and maintenance of 33-kV transmission, E.H.T., H.T. (2) SERVICE AND DEVELOPMENT ENGINEER. and L.T. distribution (overhead and underground systems) The applicant must have had a sound training and and substations. experience in the sales and development section of a The salary scale for the position will be that of Grade 3, medium or large electricity undertaking, and must be Class F. as prescribed by the National Joint Board for capable of reorganising and expanding a domestic appa­ the Electricity Supply Industry, commencing at £640 ratus repair workshop, of preparing reports on schemes per annum. The appointment will be subject to the for development, and of dealing efficiently with all matters provisions of the Local Government Superannuation Act. relating to a consumers' department. The salary will be 1937, terminable by one month’s notice on either side, in accordance with Grade 3, Class G, of the National Joint and the successful candidate will be required to pass a Board Schedule (at present £681). medical examination. (3) TECHNICAL ASSISTANT. Candidates must have Further particulars, conditions attached to the appoint­ had a thorough grounding in electrical technology, experi­ ment and form of application may be obtained from me ence in the preparation of distribution schemes, and must on receipt of a stamped addressed envelope. Applications, be capable of dealing critically and statistically with all which must be made on the official form, should be matters relating to an electricity undertaking. The salary delivered to me, in envelopes marked “ Chief Technical will be in accordance with Grade 5, Class G, of the Assistant,” not later than 10th January, 1947. Canvassing, National Joint Board Schedule (at present $573). either directly or indirectly, will be a disqualification. In addition to the above three appointments there is W. P. ERRINGTON. also a fourth appointment set out below, for which the 34, High St., Scunthorpe, Lincs. Town Clerk. applicant is not required to be a Corporate or a Graduate 9th December, 1946. 4044 Member of the Institution of Electrical Engineers. (4) EX-SERVICE TRAINEE. Training, principally in SHEFFIELD CORPORATION ELECTRICITY DEPT. the Distribution Section, for a period of two years is offered to a young ex-Service man, who has a sound basic Installation Engineer (Electrical Contracting) knowledge of electrical engineering. The applicant will be required to show that he intends and is reasonably A PPLICATIONS are invited for the above position from capable of passing, if he has not already done so. the applicants who have had a sound training and con­ Graduateship Examination of the Institution of Electrical siderable practical experience in the electrical contracting Engineers during or at the end of the two-year period. industry. Applicants should be able to prepare estimates The salary payable will be in accordance with Grade 10, and specifications for all classes of electrical installation Class G (at present £312) and, subject to satisfactory work, to supervise the carrying out of the work, and to progress, will be increased during the second year to control staff. Experience of development work in the Grade 9a, Class G, of the National Joint Board Schedule domestic, commercial and industrial applications of elec­ (at present £343). tricity would be an advantage. The successful candidates will be required to pass an The salary will be in accordance with Class M. Grade 9a. examination by the Medical Officer of Health, and to of the National Joint Board Schedule, commencing at contribute to the Council’s Superannuation Scheme. Con­ £478 per annum. ditions of service, except those laid down in the National The appointment will be subject to the provisions of Joint Board Schedule, will be those included in the scheme the Local Government Superannuation Act. 1937. Appli­ of the National Joint Council for Local Authorities’ cants must preferably be not more than 40 years of age. Administrative, Professional. Technical and Clerical or have had previous Local Authority service carrying Services. Candidates must disclose any relationship which transfer value within the meaning of the Act. The selected may exist between them and members of the Borough applicant will be required to pass a medical examination. Council or its chief officers. Applications, on forms to be obtained from the under­ Applications, stating age, whether married or single, signed, are to be returned to me not later than Monday. and present appointment, together with full details of 6th January, 1947, accompanied by copies of not more training and experience, and accompanied by not more than three recent testimonials. Canvassing or any com­ than three recent testimonials, must be sent to the under­ munication to a member of the Council, either directly or signed not later than 31st December, 1946, the envelope indirectly, is prohibited and is a disqualification. being clearly marked with the designation of the post for JOHN R. STRUTHERS. which application is being made. Commercial Street, General Manager. R. W. STEEL. A.M.I.E.E., Engineer and Manager. Sheffield, 1. 4043 ______4021 METROPOLITAN BOROUGH OF WOOLWICH METROPOLITAN BOROUGH OF WOOLWICH ELECTRICITY DEPARTMENT ELECTRICITY DEPARTMENT Radio Engineer Appointment of Two Junior Mains Engineers A PPLICATIONS are invited for the position of a Radio Engineer in the Electricity Department, at a com­ A PPLICATIONS are invited for the position of Junior mencing salary of £446 5s. per annum and increases in Engineers in the Mains Section of the Woolwich accordance with the National Joint Board Schedule, Electricity Department at a commencing salary of £408 9s. Grade 9. Class J . per annum, in accordance with the National Joint Board Applicants should be (a) Associate Members of the Schedule, Grade 9a. Class J. Institute of Radio Engineers or hold equivalent technical Applicants should have had experience in (a) The laying qualifications on radio: (b) Have had at least one year’s and jointing of medium and high-voltage underground apprenticeship with a firm of communication engineers; rabies: (b) The operation of an urban district network: (c) Have had necessary practical experience to take com­ (c) Should be a Graduate Member of the Institution of plete control of radio repair shop, including diagnosing Electrical Engineers, or possess equivalent qualifications. and testing. The appointment will be subject to the provisions of The appointment will be subject to the provisions of the Local Government Superannuation Act, 1937, and the Local Government Superannuation Act, 1937, and the the successful candidate will be required to pass a medical successful candidate will be required to pass a medical examination. examination. Applications, stating age. qualifications and experience, Applications, stating age, qualifications and experience, together with not more than three recent testimonials, together with not more than three recent testimonials, should be made to the undersigned not later than Satur­ should be made to the undersigned not later than Satur day. 11th January. 1947. Canvassing members of the day, 11th January, 1947. Canvassing members of the Council, directly or indirectly, will be a disqualification. Council, directly or indirectly, will be a disqualification. DAVID JENKINS. „ „ DAVID JENKINS. Town Hall, Town Clerk. Town Hall. Town aerk, Woolwich. S.E.18. 4123 Woolwich, S.E.18. 4122 December 27, 1946 E l e c t r i c a l R e v ie w 61

METROPOLITAN BOROUGH OF ISLINGTON METROPOLITAN BOROUGH OF ISLINGTON ELECTRICITY DEPARTMENT ELECTRICITY DEPARTMENT

Appointment ol General Clerks—Meter Reading Section Appointment of Assistant Engineer A PPLICATIONS are invited from persous of not. less A IMPLICATIONS are invited for the permanent appoint- than 21 years of age for the permanent positions of ment of an Assistant Engineer on advisory and Male or Female General Clerk (two vacancies) in the inspection work in the Consumers’ Service Section. Meter Reading Section of the above undertaking. Applicants must be between the age of 25 and 40 years The salary and conditions of service will be in accordance and have had a sound secondary and technical education with the General Division of the National Joint Council and must possess technical qualifications to not less than Scheme, as follows :—- ordinary National Certificate standard, and be experienced Male.—From £180 per annum at 21 years of age. rising in the testing and inspecting of electrical installations for by annual increments to £330 at 30 years of age. plus heating, lighting and industrial application. A sound temporary cost-of-living bonus, at present £59 16s. per knowledge of current regulations of the I.E.E.. Home annum. Office and Electricity Commissioners is essential. Salary Female.—From £144 per annum at 21 years of age. and conditions of employment will be in accordance with rising by annual increments to £264 per annum at 30 the National Joint Board Schedule. Class G. Grade 9. years of age, plus temporary cost-of-living bonus, at For first two years £399. third and fourth years £406 7s.. present £48 2s. per annum. after four years £414 15s. The commencing salary will be the salary appropriate The appointment will be subject to the provisions of to the age of the successful candidate at the date of the Local Government Superannuation Act. 1937, and the his/her appointment. successful candidate will be required to pass a medical Applicants should have a sound general education, examination. aptitude for accurate figure work, and preferably some Forms, on which applications must be made, can be experience in dealing with filing systems and records obtained from the Engineer and General Manager. similar to those used in a meter reading records depart­ 341/343, Holloway Road. N.7, and must be returned to ment. him by not later than the 4th January. 1947. Candidates The appointments will be subject to the provisions of are required to disclose in writing whether, to their know­ the Local Government Superannuation Act. 1937. and the ledge. they are related to any member or holder of any successful candidate will be required to pass a medical senior office under the Council. examination. Candidates are required to disclose in The Council are unable to make any arrangements writing whether, to their knowledge, they are related to whatsoever for the provision of housing accommodation any member or holder of any senior office under the for the successful candidate. Canvassing, either directly Council. Canvassing, either directly or indirectly, will be or indirectly, will be a disqualification. a disqualification. The Council are unable to make any W. ERIC ADAMS. arrangements whatsoever for the provision of housing Town Hall. Town Clerk. accommodation for the successful candidate. Upper Street, N.I.______4131 Applications, stating age. particulars of education, qualifications and experience, accompanied by copies of METROPOLITAN BOROUGH OF ISLINGTON not more than three recent testimonials, should be for­ ELECTRICITY DEPARTMENT warded to the Engineer and General Manager. 341/343. Holloway Road. N.7. so as to reach him not later than Appointment of Engineering Draughtsman noon on Friday. 17th January, 1947. W. E R IC ADAMS. \ PPLICATIONS are invited for the position of Town Hall. Town Clerk. Engineering Draughtsman on the permanent staff of Upper Street. N .I.______4130 the Council. The salary and conditions of service, in accordance with WEST MIDLANDS JOINT ELECTRICITY the National Joint Board Schedule, wi’.l be from Grade 9a. AUTHORITY £360 3s. per annum, to the maximum of Grade 8. £499 16s. per annum, in Class G, according to the qualifications Appointment of Meter Repairer (Mechanician), Grade 1 and experience of the successful candidate. The position offers scope for initiative in design con­ rpHE above-named Authority have a vacancy for a nected with the development of a superimposed 33 kV -*- Meter Repairer (Mechanician). Grade 1, at their transmission scheme, the reinforcement of the existing Meter Repair Depot. Shrewsbury. Applicants must have distribution system and future planning in connection had practical experience in the repair and testing of all with the standardisation of voltage and supply. types of meters, both A.C. and D.C. single-phase and The appointment will be subject to the provisions of polyphase, and- of time switches. A knowledge of general the Local Government Superannuation Act. 1937. and electrical instrument and trivector meter repairs would the successful candidate will be required to pass a medical be an advantage. examination. Candidates are required to disclose in The rate of pay and conditions of service are in accord­ writing whether, to their knowledge, they are related to ance with the District Industrial Council for the Elec­ any member or holder of any senior office under the tricity Supply Industry (No. 5 West Midlands Area. Council. Canvassing, either directly or indirectly, will be Zone B). The rate is at present 29.28d. per hour. a disqualification. The Council are unable to make any Applications, stating age and full particulars of experi­ arrangements whatsoever for the provision of housing ence, should be addressed to the undersigned. accommodation for the successful candidate. H. F. CARPENTER. Application forms, which may be obtained from the Engineer and General Manager. Electricity Department. Phoenix Buildings. Clerk and Manager. 341/3. Holloway Road. N.7. should be completed and Dudley Road. Wolverhampton. returned to him. endorsed “ Engineering Draughtsman.” 13th December. 1946. ______by not later than noon on Friday. 10th January. 1947. LONDON COUNTY COUNCIL W. ERIC ADAMS. Town Hall. Town Clerk. T> EQUIRED at South-East London Technical Institute. Upper Street. N.I. . 4129 -aA' Lewisham Way, S.E.4. a full-time Lecturer m the NORTH OF SCOTLAND HYDRO-ELECTRIC BOARD Electrical Engineering Department, Candidates must be graduates, or hold equivalent qualifications, and have had PPLICATIONS are invited for the post of Develop­ good industrial experience either in the generation ana A ment Representative in the Board's Distribution distribution of electrical energy or m the design and Areas in the Highlands of Scotland. Applicants should manufacture of electrical machinery The work includes have experience of dealing with enquiries about electricity Ordinary and Higher National Certificate courses day and sales in a rural area. Possession of E.D.A. Salesman­ and evening students and may include some teaching in ship Diploma will be an advantage. Commencing salary the Secondary Technical School. -»in« £350 p.a. Burnham scale salary, £300 X £15 to £520 The successful applicant will require to pass a medical London allowance (minimum £36). a year, examination and contribute to the Board’s Superannuation for training and Qualifications as applicable. Commencing Scheme. salary according to teaching and industrial experience. Application forms can be obtained by sending addressed Other thines being equal, preference will be given to foolscap envelope to The Secretary. North of Scotland registered disabled Persons Application forms from the Hydro-Electric Board, 16. Rothesay Terrace, Edin­ Fdnention Officer (T .l). County Hall, S .E .l (stamped burgh. 3. Final date for receipt of applications will be addressed foolscap envelope necessary), returnable by 18th itnuary 1947 H-M. Forces personnel abroad should 3r^,i?nS.arT’11th December. I947-,«,* 1946. T- LAWRIF. Secretary. 414g apply by letter. 62 E l e c t r i c a l R e v ie w December 27, 1946

CIVIL SERVICE COMMISSION, DUBLIN WALTHAMSTOW CORPORATION ELECTRICITY UNDERTAKING Assistant Engineers (6) in the Department of Posts and Telegraphs, Dublin Switchboard Attendants (Two)

A PPLICATION forms for and particulars of the above- PPLICATIONS are invited for the above positions at named posts may be obtained from the Secretary, a salary in accordance with D.J.I.C. (Area No. 10) Civil Service Commission, 45, Upper O’Connell Street, A Conditions, at present £7 6s. 3d. per 48-hour week. Dublin. Applicants will be required to undertake shift duties at Salary Scale: Man, £150-£15-£400 a year plus bonus: the power station and at a large substation, and must have Woman, £150-£10-£300 a year plus bonus. At present had previous experience in the control of high and low the bonus (including emergency bonus) on £150 is £164 2s. pressure switchgear, including operation of rotary and A successful candidate who can show to the satisfaction motor converter plant for D.C. supplies. Applicants must of the Minister for Posts and Telegraphs that he/she has be members of their appropriate trade union, should state had approved practical experience of (a) telecommunica­ whether related to any member or senior officer of the tions engineering or (b) general engineering (i.e., any Council, and should not be more than 45 years of age. branch of engineering other than (a)) or (c) both, may be The appointment will be subject to satisfactory medical allowed to enter the appropriate salary scale at a point examination for the purposes of the Local Government above the minimum equal to one increment for each Superannuation Act, 1937, to the Council’s Sick Pay completed year of such experience, subject to limits of Regulations, and to determination by one week’s notice seven increments for (a) or three for (b) or seven for (c). on either side. Age L im its: 21-35 years on the 1st December, 1946. Forms on which applications must be made can be An extension of the upper age limit may be allowed in obtained from E. S. Riley, Borough Electrical Engineer the case of persons with certain specified service in the and Manager, Electric House, Church Hill. Walthamstow. Defence Forces or in the Auxiliary Defence Services. London, E.17, and should be forwarded in envelopes Essential Qualifications: Each candidate must (i) hold endorsed “ Switchboard Attendant ” to reach the under­ a recognised University Degree in Engineering and have signed not later than 10th January, 1947. taken a technical Electrical Engineering subject in the G. A. B L A K E L E Y . Final examination for such Degree, or hold a recognised Town Hall, Town Clerk. University Degree in Science and have taken Experi­ Walthamstow, London, E.17. mental Physics as a subject in the Final examination 16th December. 1946.______4112 for such degree, or have passed in Parts I and II or joint ALDERLEY EDGE AND WILMSL0W Section A and Section B of the Associate Membership Examination of the Institution of Electrical Engineers: ELECTRICITY BOARD (ii) have a knowledge of Mathematics at least equivalent to that required to obtain Honours in that subject at Appointment of Lady Demonstrator the Department of Education Secondary School Leaving Certificate Examination. A PPLICATIONS are invited for the position of Lady Latest time for accepting completed application forms: Demonstrator at a commencing salary of £252 per 5 p.m. on the 22nd January. 1947.______4126 annum, rising by annual increments of £12 to £288 per annum. In addition a cost-of-living bonus will be paid BOROUGH OF CONWAY ELECTRICITY DEPT. which is at present £48 2s. Candidates must have a good general education, and Appointment of Mains Assistant Engineer must be able to conduct lecture-demonstrations in the showroom and on consumers’ premises. They must have PPLICATIONS are invited for the above appointment a wide knowledge of domestic electrical appliances, and at a salary in accordance with Class A, Grade 6, of be able to advise customers on their selection and uses, A the National Joint Board Schedule (£368 rising to £391and should possess a Diploma in Domestic Science and/or per annum). the E.A.W. Electrical Housecraft Diploma. Applicants must have had a sound technical training The appointment will be subject to the provisions of and practical experience in the installation, maintenance the Local Government Superannuation Act, 1937, and the and operation of E.H.T. and L.T. underground cables successful candidate will be required to pass a medical and o/h systems and substations, and be able to under­ examination. take work of layout, design and planning and the keeping Applications, on forms to be obtained from the under­ of records and drawings. Candidates must be Graduates signed, endorsed “ Lady Demonstrator,” stating age, I.E.E. The appointment will be subject to the provisions whether married or single, and giving details of qualifica­ of the Local Government Superannuation Acts, and the tions, experience and appointments held (including present successful applicant will be required to pass a medical position), to be submitted to the undersigned not later examination. than the 12th January, 1947. Applications, endorsed. ” Mains Assistant Engineer,” C. CAMERON K IR B Y . stating age, full particulars of experience and qualifica­ 13, Water Lane, Engineer and Manager. tions. together with copies of three recent testimonials, Wilmslow, Cheshire. 4128 must be received by the undersigned not later than Saturday, 11th January, 1947. COUNTY BOROUGH OF SOUTHEND-ON-SEA ELECTRICITY DEPARTMENT ARTHUR L. RALPHES. Town Clerk’s Office, Town Clerk. Installation Engineer Bodlondeb, Conway. 12th December. 1946.______4144 A PPLICATION S are invited for the above appointment CHEADLE AND GATLEY URBAN DISTRICT from persons under 35 years of age, preferably COUNCIL ELECTRICITY UNDERTAKING corporate members of the I.E .E ., with sound technical training, who have had experience in the Installation Department of an Electricity Undertaking. A PPLICATIONS are invited for the position of Instal- The successful applicant will be required to prepare lation Inspector. Candidates must be experienced specifications and estimates for all classes of installation electricians, conversant with I.E.E. Wiring Regulations, work and act as senior inspector in charge of wiremen and able to inspect and report upon domestic and in­ and meter fixers under the supervision of the Installation dustrial installations. Conditions and rate of pay in Superintendent. accordance with District Joint Industrial Council. No. 3. The salary will be in accordance with Class F. Grade 8. North-Western Area, at present £5 6s. per week for a of the N.J.B. Schedule, commencing at £442 per annum. 47-hour week. (Undertaking likely to be re-graded in Class G shortly.) Applications, in candidate’s own handwriting, stating The appointment will be subject to the local Govern­ age, experience and present occupation, accompanied by ment Superannuation Act. 1937. and the person selected two recent testimonials (endorsed ” Installation Inspec­ will be required to pass a medical examination. tor ” ), must be forwarded to the Electrical Engineer and Applications, giving full details of training and experi­ Manager. 19, High Street, Cheadle, Cheshire, and must ence, accompanied by copies of two recent testimonials, reach him not later than 10 a.m. on Friday, January and endorsed Installation Engineer,” to reach the 10th, 1947. Canvassing, directly or indirectly, will be Borough Electrical Engineer and Manager, Electric House deemed a disqualification. London Road, Southend-on-Sea. not later than 11th W. TIM PER LE Y , January, 1947. Canvassing will disqualify. Town Hall, Clerk to the Council. ARCHIBALD GLEN. *■ Bruntwood, Cheadle. Cheshire. Municipal Buildings, Town Clerk. 14th December, 1946. 4104 Southend-on-Sea. 4138 December 27, 1946 E l e c t r i c a l R e v ie w 63

LONDON AND HOME COUNTIES JOINT ADWICK-LE-STREET U.D.C. ELECTRICITY DEPT. ELECTRICITY AUTHORITY

APPLICATIONS are invited for the appointment of Appointment of Assistant Mains Enqineer -L». Showroom Assistant, Surbiton district. Candidates must have had a good general education to matriculation A PPLICATIONS arc invited from young men between standard, and had experience in the showroom of an the ages of 22 years and 28 years for the above electricity supply undertaker or electrical contractor. position. Candidates must have good technical qualifica­ Good personality, sales ability and wide knowledge of tions (either Higher National Certificate or equivalent) in domestic electrical apparatus are essential Electrical Engineering, shpuld have experience either of Conditions of service and salary in accordance with the manufacture of electrical equipment used by the Local Authorities Administrative, etc.. Services National electricity supply undertakings, or with H.T. and L.T. Scale. Miscellaneous Division, Grade II. Commencing networks and static substations, and should be capable of salary £315 per annum, plus £20 for London area, and good draughtsmanship. Higher technical qualifications cost-of-living bonus, which is now £59 16s. per annum will compensate for a smaller practical experience. The at age of twenty-one and over. salary will be in accordance with the National Joint The person appointed will be required to pass a medical Board Scale. Class A. Grade B, commencing at £300 per examination by the Authority’s medical adviser, and to annum inclusive of War Bonus. become subject to the Authority’s Superannuation Scheme, The appointment will be subject to the provisions of which applies generally the provisions of the Local Govern­ the Local Government Superannuation Act. 1937. and ment Superannuation Act, 1937, including the provisions the successful candidate will be required to pass a medical of that statute relating to transfer values. examination. Applications, stating age, qualifications and experience, Applications, in sealed envelopes endorsed “ Assistant and endorsed “ Showroom Assistant,” accompanied by Mains Engineer,” stating age, whether married or single, copies of not more than three recent testimonials, must qualifications with subjects taken, full details of be sent to the District Manager of the Authority at 22. experience, and accompanied by copies of not more than three recent testimonials, must reach the undersigned not Claremont Road. Surbiton, so as to reach him by not later than Friday, 10th January, 1947. Canvassing will later than the 17th January, 1947. Canvassing, directly disqualify. or indirectly, will be a disqualification. H. EAGLES. A. L . BU R N ELL. Electricity Offices. Electrical Engineer and Manager. 5-6, Lancaster Place, Clerk to the Authority. 10-12, Church Lane. Strand. W.C.2. 4147 Adwick-le-Street, near Doncaster.______4139 METROPOLITAN BOROUGH OF BETHNAL GREEN COUNTY BOROUGH OF ST. HELENS ELECTRICITY DEPARTMENT ELECTRICITY DEPARTMENT

Appointment of Meter Test Room Assistant A PPLICATIONS are invited for the appointment of Power Station Superintendent at a salary in accord­ A PPLICATIONS are invited from persons of not more ance with Class G. Grade 3. of the N .J.B . Schedule, than 45 years of age for the appointment of Meter commencing at £681 per annum. Test Room Assistant in the Electricity Department. Candidates must have had a good engineering training, Candidates must have had a sound technical training and followed by experience in the operation, maintenance be conversant with the Electricity Supply (Meters) Act. and installation of plant in generating stations. They 1936, as applied to a Class A Polyphase Testing Station, should preferably be under 45 years of age and must be and be capable of testing all types of A.C. meters, includ­ Corporate Members of one of the leading Engineering ing 3-phase. 3-wire and 3-phase, 4-wire polyphase and Institutions. kVA equipments. Applications, accompanied by copies of not more than The salary will be in accordance with the National three testimonials, must be made on the form obtainable Joint Board Scale, Class F, Grade 9a, at present £343 7s. from the undersigned, and be received not later than (inclusive of cost-of-living bonus). 15th January, 1947, in an envelope clearly endorsed The appointment will be subject to the provisions of ’’ Power Station Superintendent.” The appointment will the Bethnal Green Borough Council (Superannuation) Acts, be subject to the provisions of the Local Government 1906-1937, and the Council’s Bye-laws and Standing Orders, Superannuation Act, 1937, and the successful candidate and the selected candidate will be required to pass a will be required to pass a medical examination. medical examination. P. BREGAZZI, Applications, in the candidate’s own handwriting, with Carlton Street. Engineer and Manager. particulars of age. experience and qualifications, and St. Helens, Lancs. accompanied by not more than three recent testimonials, 14th December. 1946.______4143 must reach me at the under-mentioned address not later than 12 noon on Monday, 6th January. 1946. Canvassing BURGH OF LERWICK ELECTRICITY DEPT. will disqualify. S. P. FERDINANDO. Overhead Linesman Town Hall, Town Clerk. . Bethnal Green, London, E.2.______4091 X ^X P E R IE N C E D Overhead Linesman required, one with BOROUGH OF H ASLINGDEN ELECTRICITY DEPT. underground jointing experience preferred but not essential. Wages and conditions of employment will be Mains Assistant in accordance with D .J.I.C . rates for No. 13 Area as a minimum, but a higher rate may be paid depending on PPLICATIONS are invited for the position of Mains qualifications. A Assistant in the Electricity Department at a salary Applications should be sent to the undersigned, giving in accordance with Grade I of the Administrative. Pro­ full particulars of experience and enclosing copies of fessional and Technical Division, National Joint Council’s references. Scale for Local Authorities’ Staffs (£330 X £15 to £375 JAMES STEPHEN. per annum, plus bonus at present £59 16s. per annum). Electricity Works, Engineer and Manager. Candidates must possess the Higher National Electrical Lerwick. 4026 Engineering Certificate or equivalent technical qualifica­ tion., and must have had experience in the laying of SPALDING U.D.C. ELECTRICITY DEPARTMENT 6.6-kV high tension mains, three-phase distribution, and maintenance and operation of static substations. The Mains Assistant appointment is subject to the provisions of the Local Government Superannuation Act. 1937. The successful candidate will be required to pass a medical examination A PPLICATIONS are invited for the post of an Assistant by the Council’s Medical Officer of Health. Mains Engineer in the above undertaking. Salary in Applications, stating age, whether married or single, accordance with N.J.B. Schedule. Grade 8b. The appoint­ giving details of training and experience, and accom­ ment will be subject to the Local Government Super­ panied by copies of three recent testimonials, must be annuation Act. 1937, and the successful candidate will be forwarded to the Borough Electrical Engineer. John St.. required to pass a medical examination. Haslingden. Lancashire, not later than Wednesday, 8th Applications should be in the office of the undersigned January, 1947. „ , , ______by January 11th. 1947. L. M. BURTON, FRAN K R. C. ROBERTS. Municipal Offices, Haslingden. Town Clerk. 9. Winsover Road. Engineer and Manager. 13th December. 1946. 4142 Spalding. Lincs. 4125 64 E l e c t r i c a l R e v ie w December 27, 1946

Senior Electrical Sales Engineer is required for service ESIGNER-Draughtsman required for consulting engi­ A in Malaya. Applicants should be fully qualified D neer’s office, with electrical and mechanical experi­ electrical engineers, preferably with steam turbine experi­ ence. Part-time service would be considered. Box 509/. ence. Reply, giving full details of experience, age. and c/o The Electrical Review. salary required, to—The Labour Dept., Brush Electrical ESIGNER-Draughtsman, with telecommunication ex­ . Engineering Co. Ltd.. Loughborough. 4039 D perience. required for work on electronic measuring PPLICATIONS are invited for the position of Sales apparatus. Write, giving details of experience, age and A Clerk at a salary commencing at £315 per annum, salary required.—L.M.K. Manufacturing Co. Ltd., Harle­ rising to £360 by three annual increments, plus bonus, at quin Avenue. Brentford, Middlesex. 4070 present fixed at £59 16s. per annum. Preference will be OMESTIC electrical appliance manufacturers require given to applicants who have had experience in stock D Assistant to Export Manager in London. Candidates keeping and recording all types of electrical goods sold in should have some knowledge of electrical appliances and electricity showrooms. Applications, stating age, educa­ experience in dealing with enquiries, the execution of tion. details of experience, present position, etc.. to be orders, shipping formalities, invoicing and general export sent to the undersigned not later than Friday, 3rd January, routine. Applicants should give full particulars of previous 1947. — A. W. Barham. Chief Engineer and General experience, age and salary required.—Box 4074, c/o The Manager. Electricity House, The Parade. Watford. 4014 Electrical Review. RMATURE Winders required, also Chargehand or RAUGHTSMAN required (Walthamstow district) with A Foreman, also Improvers for fractional motors up D good general experience in machine and plant design. to 50 h.p. Standard rates, good prospects.—D.C. Engi­ Good working conditions. Pension scheme. Reply stating neering. Sherborne. Dorset. 5096 age, experience and salary required, to—Box 4117, c/o RMATURE Winders and Improvers required, A.C. The Electrical Review. A and D.C., top rates, good working conditions.— RAUGHTSMAN with experience of H.T. and L.T. oil Electrical Power Repairs (Gillingham) Ltd.. Strover D circuit breakers and metalclad switchgear required Street. Gillingham, Kent. 5065 for South Midlands. Technical man preferred. Write, RM ATURE Winders and Improvers urgently required. giving details of experience, technical education, age and A Top rates and good conditions.—Box 113, c/o The salary required.—Box 3841, c/o The Electrical Review. Electrical Review. RAUGHTSMAN with experience of small pressings, RMATURE Winders and Improvers urgently required. D castings and/or electrical fittings required for work A Top rates and good conditions.—Collins Electrical on automobile lamps by progressive firm in North London. Ltd.. 22. St. Alban’s Place. London, N.I. 85 —Box 4057. c/o The Electrical Review. RMATURE Winders and Improvers wanted, must be RAUGHTSMEN, preferably with telecommunications A used to A.C. and D.C. repair shop work. Write, stating experience and wages required, to—W. H. Sugden D experience, required by large firm in the Midlands. & Co. Ltd.. Glenny Road. Barking. 3958 Maximum salary £350 plus cost of living bonus. Write, RMATURE-winding Working Foreman required for giving details of experience, age, and salary required.— A repair shop in South London. Good disciplinarian Box 11. c/o The Electrical Review. and repair shop experience essential.—Box 5057, c/o The "C^LECTRIC Light Fittings Co. have vacancy for person Electrical Review. to take charge of ordering, despatch and invoicing. RTLANG Limited require a Representative for South Experience in trade necessary. Write full details age A London. Wholesale experience and possession of a and sal. reqd.—Box 4034, c/o The Electrical Review. car are essential. Remuneration by salary, commission T ^L E C T R IC A L Draughtsman required for large Sheffield and expense allowance. Please apply by letter to—Sales -"-J steelworks. Applicants must have experience in Director. 42, Langham Street, W.l. 40/9 preparation of wiring diagrams, shop layouts for lighting SSISTAN T Bookkeeper (Lady) required by City firm and service trenchwork, and be capable of taking measure­ A of exporters. No Saturdays. Write—Box P.Y.R.. ments on site, preparing cable plans and general electrical c/o 95. Bishopsgate. E.C.2. 3880 service records. Standard salary. Apply, stating age, SSISTANT District Engineer required by electricity qualifications and experience, enclosing copies of recent A supply undertaking in North Scotland. Salary testimonials, to—Labour Manager, S. Fox & Co. Ltd.. £350/400 p.a. according to experience. Reply giving full Stocksbridge Works, near Sheffield. 4072 particulars of education, experience, age, etc., and enclos­ X^LECTRICAL Engineer required for investigations into ing references.—Box 5081, c /o The Electrical Review. factory processes and cable manufacturing problems. SSISTANT Electrical Engineer required for develop­ B.Sc. or equivalent in electrical engineering or physics. A ment work on specialised contactors and electro Some factory experience desirable. Age 21-26. Salary mechanical auxiliary equipment. Applications, stating £6 to £8 per week according to age and experience. Oppor­ fully, qualifications, experience and salary expected, tunities for advancement. Apply—Staff Officer, British envelopes endorsed “ Assistant Engineer,” to—South Wales Insulated Callender’s Cables L td., Erith Works, Belvedere, Switchgear Ltd. Blackwood, Mon. 4140 Kent. SR /1 4 . 4010 p A B L E Jointers urgently required by large industrial T ^L E C T R IC A L Engineer required for service in Malaya concern operating in Middle East. Applicants for with merchant house holding British electrical manu­ two of these vacancies must be thoroughly experienced in facturers’ agencies and engaged in sales and contracting jointing 11,000 volts and 33,000 volts paper instated, work. Three years’ agreement, first-class passage out and lead covered armoured cables. Age under 35. salary in home, salary according to experience. State age, quali­ sterling according to experience but not less than £600/ fications and experience and submit copies of testimonials 620/640 for a three years’ agreement plus generous allow­ to—Box 4097. c/o The Electrical Review. ance in local currency, together with free furnished X ^LE C T R IC A L Showroom Salesman required for old- bachelor accommodation, free passages out and home, A- A established company in South Kensington, age under free medical attention, kit allowance and Provident Fund benefits. Apply, stating age. qualifications, experience, 45. Must have knowledge of electrical and radio trade. otc. to Dent. F.39. Further vacancies exist for Cable Permanent position. Write, stating age, salary and Jointers with experience in jointing on L.C.P.I. armoured experience, to—Box 4018, c/o The Electrical Review. cables up to 440 volts. Experience in house service X^NGINEERS and Draughtsmen are invited to apply to supply mains work essential. For these vacancies can­ 1 a large electrical engineering firm in the Midlands didates. who should be under 40 years of age. will be which has vacancies in the switchgear department for required to sign an 18 months’ agreement at a salary of Technical Sales. Contract. Costing and Design Engineers; £50 per month with allowance in local currency. Similar also experienced Technical Engineers capable of handling benefits to the above but no membership of Provident large projects for generation, transmission and distribution. Fund. Apply, stating age, qualifications, experience, etc. Vacancies also exist for Draughtsmen for circuit diagram to—Dept. F.40. Box 4135, c/o The Electrical Review. and general work.—Box 69, c/o The Electrical Review. HIEF Draughtsman required for progressive position N G IN EER S required for research and development C with well-established firm in North-West manufac­ E department of a firm in the London area. Previous turing domestic electric appliances, including cookers. experience on the development of electronic components Production and design experience of domestic appliances necessary. Applicants should write, stating age and ex­ essential. Company’s staff have been notified of this perience. to—Box 3929, c/o The Electrical Review. vacancy. Write, stating age. salary required and details STIMATOR and Draughtsman required, with good of experience, to—Box 4076, c/o The Electrical Review. E knowledge of installation work. Write, giving full /C L E R IC A L Assistant required for stores office. Must particulars, to—Troughton & Young Ltd.. Imperial Court. ^ have good knowledge of electrical material.—London Basil Street. Knightsbridge. S.W.3. 5071 Electrical Co., 92. Blackfriars Road. S.E.l. 104 -p U R N A C E Engineer required by manufacturers. London /^ILERK with experience of electrical contracting. Able district. Electrical and mechanical experience neces­ ^ to prepare estimates and render accounts. Please sary in design and estimating, all types electric furnaces state full particulars of experience and salary required Apply, stating age. experience and salary reouired In- to—Box 4075. c/o The Electrical Review.. Box 4032. c/o The Electrical Review. required, to I 27, 1946 December E l e c t r i c a l R e v ie w 65

Tf'IKST-clajss Electrician wanted, used to installation A IL company, Persian Gulf, require Electricians for ii*??4 for right man- Apply—R. J. high-voltage line work and rewinding motors. Salary W.. Co;ilville, nr. Leicester. 9920 £650 plus free meals and accommodation. No income tax. TU N IO R Mains Assistant reQuired, preferably with some Married applicants must be prepared separation from experience of the erection of high and low tension families for two years. Write full details to—Box 1467. lines in rural areas. Commencing salary £6 per week with c/o Charles Barker & Sons Ltd., 31, Budge Row, London. good prospects of advancement. Applications, with copy E.C.4. 4120 testimonials, to—The Boston & District Electric Supply X >LA N T Engineering Draughtsmen. Capable men with Co. Ltd., Besco House, Boston, Lincs. 4084 -1- comprehensive experience of plant layout, heating, T i A D Y . Shorth? nd Typist required in electrical contrac- lighting and ventilation are invited to make application tors’ office in the City. Please apply, giving details for position in London area.—Box 4068. c/o The Elec­ as to experience, salary required, to—Box 4061. c/o The trical Review. Electrical Review. T ONDON electrical wholesalers require Representative T > EPRESEN TA TIV E required to cover Midlands by with car to cover London area and outskirts. Good manufacturers of small electrical accessories. Please commission paid with small car allowance. Write, stating state age. qualifications, terms and references to—Box experience, to—Box 4005, c /o The Electrical Review. 4137, c/o The Electrical Review. T > EPRESEN TA TIV E wanted, electrical cables and ly/TACHINE Tool Electrics Ltd.. London Road, Leigh- flexes. London district, car owner.—Box 4109, c/o on-Sea, Essex, invite applications for the position of The Electrical Review. Circuit Draftsman. Applicants for this position must have had previous experience with multi-motor automatic T > EQUIRED for electrical contractors in Westminster, control gear, and be able to prepare working diagrams a Storekeeper /Order Clerk. Good salary and con­ from details of the operations that any particular con­ ditions offered to reliable man. Write, giving details of troller will be required to carry out. Knowledge of the experience and salary expected, to—Box 5098, c/o The design of contactor gear, transformers, over current relays Electrical Review. and like components will be considered an advantage. Com­ Q E N IO R Designer-Draughtsman required for electrical mencing salary according to qualifications and experience. control gear. Knowledge of contactor design essential. Applicants should state previous experience in detail, age. 5-day week and excellent prospects. Age over 35. Write qualifications, and names of previous employers. 4095 details of experience, salary required, to— Box No. 327, lY/TACHINE Tool Electrics Ltd.. of 1091-1095, London 8, Serle Street, London. W.C.2. 3885 Road, Leigh-on-Sea, invite applications for the QEVERAL first class Electricians wanted in East Mid- position of Works Superintendent. Person appointed will ^ lands district, fully conversant with industrial in­ be required to organise and plan the manufacture of stallations and all wiring systems. Permanent employ­ various types of small contactor gear and associated acces­ ment for suitable applicants.—Box 4136. c/o The Elec­ sories. also the sub-assembly of components and assembly trical Review. of multi-motor control panels and industrial electronic Q T O R E S Clerk required by firm of elec. contractors. equipment. Applicants must have had considerable ^ S.W .l area. Knowledge of purchasing necessary. experience in light press and capstan work, and general Write full details, age and salary reqd.—Box 4033. c/o machine shop work, also experience in light assembly The Electrical Review. work. The position offers excellent prospects for a real npECHNICAL Manager (about 30) wanted to take charge live man who is capable of efficient organisation. Com­ -1- of design and production of control gear, starters, mencing salary not less than £500 per annum. 4110 etc., in Wolverhampton. Only men with brains and wide ]\T A L A Y A . Applications are invited for the following experience need apply. Write, giving full details of positions: Assistant Engineer (Generation), age 25-35, experience and salary required, to—Box 4116, c/o The good technical qualifications and experience of power sta­ Electrical Review. tion work essential. Mains Assistant, age 25-35; applicants r p H E Civil Service Commissioners announce that a should have experience on construction and maintenance special competition will be held for appointments as of H.T. overhead lines and substations. Experience of Assistant Engineer (New Style). Male, in the Post Office installation and maintenance of motors and control gear Engineering Department and Assistant Traffic Super­ also desirable. Remuneration for both positions according intendent in the Telephone Department of the General to qualifications and experience within the salary range Post Office. Approximately 100 vacancies in each grade £560 X £28 to £700, plus cost-of-living allowance, free will be filled by examinations spread over a period of two passage, quarters, medical attendance and car allowance. or three years. Candidates must have been bom on or There is also a contributory pension scheme. Apply in after the 2nd August, 1915, and have attained the age of first instance to—B’ox 4001. c/o The Electrical Review'. 18 by the 1st January of the year in which they compete. 1%/TANAGER or Manageress of good appearance and Allowance will be made for service in H.M. Forces prior personality required for high-class electrical and radio to 3rd September. 1939. Men only are eligible to compete retail and art goods business, 30 miles from London. Must for appointment as Assistant Engineer (New Style). The be thoroughly capable and able to take full control. Write salary scales are as follows:—Assistant Engineer (New with particulars, stating age, experience and salary re­ Style): London. £280 rising by annual increments of £20 quired.—Box 115, c/o The Electrical Review. to £580; Provinces. £265 X £20 to £560 (including con­ solidation addition). Assistant Traffic Superintendent: 'Y/TERSEYSIDE firm of electrical contractors require Men. London, £190 X £18 to £465: Provinces, £180 X first-class Estimating/Supervising Engineer. Must £18 to £435; Women. London, £190 x £12 to £375: be capable of preparing complete schemes, taking off Provinces. £180 X £12 to £345; to which is added a quantities, costing and supervising all types of electrical consolidation addition ranging from £78 at the minimum installation work. Give full details of age. training, to £90 at the maximum for men over 21. with correspond­ qualifications and experience. State salary required and ing addition from £63 to £72 for women over 21. For send copies of references to—Box 4031. c/o The Elec­ men and women below the age of 21 the additions are trical Review. as follows: Age 18, men £47. women £47; age 19. men ll/r E T E R Mechanic. Applications are invited for the £55, women £55; age 20. men £63; women £59. Male position of Meter Mechanic from craftsmen having candidates may apply to compete for appointment as suitable experience in repairing and recalibrating all types Assistant Engineer (New Style) and Assistant Traffic of watthour meters, summation equipment and time Superintendent at the same examination. There will be switches. Conditions of employment and wages are in prospects of promotion to higher grades. Candidates now accordance with No. 9 Area, J.I.C.. the present wage serving in H.M. Forces must send in their application being £5 9s. 8d. per week of 47 hours, including war bonus. forms in time to reach the Civil Service Commission not The appointment in the first instance will be temporary. later than six months after the completion of their service. Applications, with copies of three recent testimonials, All other candidates must send them in by 1st April. 1947. should be addressed to the Borough Electrical Engineer. except that for candidates who are under 18 years old Town Hall. Tunbridge Wells. 4118 on the 1st April, 1947. the latest date for sending in the 'VTORTH-East Coast firm requires Engineer between 25 form is the 1st January following their 18th birthday. and 30 years of age for land boiler department to Copies of the regulations and forms of application may assist with tenders, testing, etc. Preferably with engineer­ be obtained from the Secretary. Civil Service Commission. ing degree. Please give full particulars with application Burlington Gardens.London, W .l. or from the Chief Officer. and state salary required.—Box 402o. c/o The Electrical Civil Service Commission, at the following addresses, Review. . quoting No. 1679: (India) 10 Underhill Lane. Delhi: OVERHEAD Linesmen required for Newbury district. (Egypt) 8 Sharia Tolumbat, Garden City, Cairo; (Italy) ^ Must be experienced in erection and maintenance of c/o G.H .Q .,C.M .F.; (Germany) c/o 2nd Echelon. G.H.Q.. E.H.T. and L.T . overhead lines and services. Conditions B.A.O.R. 4087 of service and pay in accordance with the No. 9 D.J.l.C. fTVRADE Counter Assistant required. Good knowledge Prefent rate 2sP2d. per hour. Apply-Wesse* Electncty of electrical material essential.— L

A .C. and D.C. Motors. all sizes, large stocks, fully T V C . Higgs Motors, one 15 h.p.. with starter. £22 10s.; guaranteed.—Milo Engineering Works. Milo Road one 10 h.p., ditto, £15.—Ryland, 150, Moseley Rd.. bust Diflwich. a.E.22 (Eorest Hill 2278-9). lo2 Birmingham. 12. 5101 A .L. /D.C. Motors and Switchgear can be supplied from stock or at short notice. Send your requirements TAIESEL Alternator Sets, consisting of Paxman Ricardo to -Jo h n Phillips & Co. Electrics. 31. Fortune Green Ed.. vertical engines, radiator-cooled, direct coupled to W. Hampstead (Telephone. Hampstead 8132). 128 35-kVA Mawdsley Alternators. 400/3/50, or 230/1/50. A .C ./D .C . 5-valve Superheterodyne Sensitive 3-wave self-contained modern units, complete with fuel tank, silencer, etc. Three available.—Stewart Thomson & Sons u- ? a“d S « eiveiS- Excellent tone. Attractive modem cabinets in Plastele ' or polished wood. £16 16s. Usual (L ’pool) Ltd.. Fort Road, Seaforth, Liverpool 21 (Bootle trade terms and facilities. Early delivery. Trade only.— 2697-8) or Dacre House, Victoria Street, Westminster. Morgan, Osborne & Co. Ltd.. Southview Road. Warling London. S.W .l (Abbey 4017). 55 ham. Surrey. 'JT'LECTRIC Furnace Control Panel, suitable for 2 A .C. Motors, l/7 5 th h.p. to 5 h.p., all voltages. Also furnaces, by Wilde Barfield, with Cambridge D.C.—The Johnson Engineering Co., 319, Kennington recorders and thermostats, unused.—W. H. Sugden & Co. Road. London. S.E.ll. Telephones. Reliance 1412/3. 57 Ltd.. Glenny Road. Barking. 3957 A .C. Slip-Ring Motors. 517 h.p. 3.300/3/50 cycles. TT'LECTRIC Lamps, Flashlights. Flashlight Bulbs, Port- 580 r.p.m.. L. D. & M .; 340 h.p.. 400/3/50 cycles. -t~A able Fires. Accessories. Prompt delivery.—Suplex 1.450 r.p.m.. Harland; 260 h.p.. 400/3/50 cycles. 580 Lamps Ltd.. 50. Gray's Inn Road. London, W.C.l. r.p.m., L. D. & M .; 170 h.p., 400/3/50 cycles. 960 r.p.m.. Holborn 0225. 116 Met.-Vick.: 150 h.p.. 400/3/50 cycles. 580 r.p.m., Har­ T^LECTRIC Motors, A.C. and D.C. We supply all types land; 100 h.p.. 400/3/50 cycles. 360 r.p.m., B .T .H .; 2 -M-A and sizes of electrical machinery. Slow speed reduc­ 75 h.p.. 400/3/50 cycles. 580 r.p.m., Crom.-Park.; 35 tion gears can be supplied to customers’ requirements with h.p.. 400/3/50 cycles. 580 r.p.m.. Brook; 2 35 h.p., short deliveries. Send your enquiries to—The Electro 400/3/50 cycles. 960 r.p.m.. Fuller.—Newman Industries Power Co. Ltd. (formerly Be-Be Engineering). 3. Retreat Limited. Yate, Bristol. 3992 Close, Kenton, Middx. (Wordsworth 4928). 42 A TTRACTIVE Electrical Hall Lanterns available from T^LECTRIC Motors, 1/3 h.p.. 3.000 r.p.m.. D.C. 110 stock at reduced price.—Reeves Electrical & Radio volts. Also 220 volts. Stock delivery, £6 each.— Co. Ltd.. Baldock. Herts. 3933 John Steel. Clyde Mills, Bingley. Yorks. 84 TTRACTIVE weekly offers from The Electioplant Co.. JT'LECTRIC Motors and Dynamos. We hold one of the A Wembley. Middx. A number of complete Dynamos or largest stocks of new and secondhand motors. Second- Sets. 150 amps.-600 amps., 6/10 v. A number of Alter­ aaud machines are thoroughly overhauled. Inspection and nators from l£-3 kVA. 230/1/50. almost new. Many M.G. tests can be made at our works. For sale or hire. Send Sets of various descriptions. Ask for further details. 4092 your enquiries to — Britannia Manufacturing Co. Ltd.. UTO Bulbs. Side and Tail and Head Bulbs, prompt 22-26, Britannia Walk, City Road, London. N .l (Phone, A delivery. Wholesalers send purchase tax number 5512-3 Clerkenwell). 13 for samples and price.—J . N. Somers Ltd.. 10/12, Crickle- X ^LE C T R IC Welding Plant. Engine and Electric, A.C. wood BToadway, London. N.W.2 (Tel. GLA. 3005.) 5033 driven, 300 amps, output, complete with weather­ ATTERY Chargers for home and export, 4 models. proof covers.—Box 34. c/o The Electrical Review. B 2-6-12 v., 1. 2 or 4 amp. D.C., any mains voltage. IR E Elements. Good quality, pencil type. Wound Generous trade terms. Write for catalogue.—The Banner F nichrome wire. 9£", 1 kW. 48/- dozen; 500 lots. Electric Co. Ltd., Hoddesdon. Herts. Tel.: Hoddesdon 3/7 each; 1.000 lots. 3/6 each; 5.000 lots. 3/3 each. 2659 97 8". 750 w.. 42/- dozen; 500 lots. 3/1 each; 1.000 lots. EEANTEE Festoon Striplight Holders, made of X20 3 /-; 5,000 lots. 2/9. Quotations for other sizes. B Bakelite. for use with 7/.029 T.T.R. cable, require Immediate delivery all sizes. Carriage paid 500 and over, no tools or screws for wiring. Immediate delivery of any otherwise 4 /2 per 100 extra. Samples 5/- each.—The quantity. Passed by the fire authorities. Used by cor­ Wellco General Supplies, New Close. Iv neb worth, Herts. porations and supply companies all over the world. Large 5029 quantities of British made Electric Lamps and Cable T^LU O R ESCEN T Chokes. 80 watt Low noise level, for always in stock.—The Beeantee Illuminations (London) satisfied users; long life, for low replacement costs; Ltd.. Temporary Address. 6. Upper Street. Islington. characteristics matched with lamp, for rated lamp life and London. N .l (Phone. Canonbury 4555). 71 light output. Prompt deliveries.—Micramatic Ltd.. Meico .T.A. A comprehensive service is now available for Works. Congleton, Cheshire. 73 B all classes of tools and equipment for the accumu­ lator trade. — B.T.A., 246, Cavendish Road. London, X^LUORESCENT Lighting. Constead Units for sale. S.W.12. Tel. : Balham 6691/2. 10 Dispenses with all starter gear and gives instantaneous . & W. Water Tube Boilers for disposal. Two 50.000 lighting, prevents maintenance worries, each unit guaran­ B lbs. evaporation, 310 lbs. w.p.; two 50.000 lbs. teed. Apply—Scemco Ltd., 6/7, Soho Street, London, W .l evaporation. 220 lbs. w.p.; four 30.000 lbs. evaporation. (Tel. GER. 1461). 117 260 lbs. w .p.; one 20,000 lbs. evaporation, 175 lbs. w.p.; TJ'LU O RESCEN T Lighting. Self-contained Ballast Units one 12.000 lbs. evaporation, 200 lbs. w .p.; two 16.000 lbs. J- by Hi-Craft. Complete with Glow Starter Switch evaporation. 190 lbs. w .p.; one 9/10,000 lbs. evaporation. and Power Factor Condenser for 80-watt tubes. Supplied 200 lbs. w.p. We install complete, including brickwork. from stock.—Scemco Ltd., 6/7, Soho Street. London. W.l. Economisers. Pumps, Piping, Valves. Generating Sets and Tel. GER. 1461. 121 Motors in stock. Please send us your enquiries; we can r^LU O R ESC EN T Lighting. Special offer, immediate give immediate delivery.—Burford, Taylor & Co. Ltd.. delivery. Trough and Flush Type Fittings, fitted with Boiler Specialists. Middlesbrough. Telephone. Middles­ Constead or ballast control gear. Without tubes.—Scemco brough 2622. 32 Ltd.. 6/7. Soho St.. London. W .l (Tel. GER. 1461). 120 U RD ETTE & Co. Ltd. stock Reconditioned A.C. and TT^LUORESCENT Lighting Fittings. Extensive range. B D.C. Motors and Starters equal to new. Day and night J - including Trough and Flush type, fitted with “ All in service.—Stonhouse St., Clapham. S.W.4. Mac. 4555. 1< One ” “ Constead Unit.” and complete with tube». HOKES, suitable for 80-w. fluorescent tubes, reputable Write—Scemco Ltd.. 6/7, Soho Street, London. W.l. C manufacture, very reliable, totally enclosed, compound Phone. GER. 1461. 100 filled, complete with fixing brackets. Available tapped OR sale in Channel Islands. New 1.200-kVA Geared 200/250 v. or untapped 220/230 v.. 50 cycles. Ex stock. F Turbo-Alternator by A.E.G., 400 volts, 3-phase. 50 —Hardman & Company Ltd.. The Baum. Rochdale. Lancs cycles. 450 lb. working pressure, with 22.000 lb. evapora­ (Tel. 4151). „ 4089 tion water tube boiler, 450 lb. pressure; Two new 300-h.p. " /X L E F A ” Small Accessories. Copper Earth Clips, Up- and one 200-h.p. twin-cylinder Gas Engines, with suction right Gimbals and other metal parts made to order. plants, belt driving 300 and 200-kVA alternators, 220 v., Good deliveries.—Central London Engineering (Fabrica­ 500 cycles, with 5-panel switchboard and step-up trans­ tions) Ltd.. 120. Old Street. E .C .l. „ 108 former, 900 kVA. 200 to 6.000 volts: Two new 75-ton .C. Exhaust Fans: Keith Blackman, type S. 8 out­ hand-operated Travelling Gantry Cranes, 40ft. span, 20ft. D let. 15 h.p.. 220- v .; Sturtevant No. 6. 10" outlet. lift, each with 16-wheel rubber-tyred trailer for trans­ 12 h.p., 220 v . ; Sturtevant No. 6. 10" outlet. 10£ h.p.. porting: Three 3-ton Portal type Electric Level Luffing 220 v .: Sturtevant No. 3. 7" outlet. 4£ h.p.. 220 v .. Wharf Cranes, with 52ft. lattice steel jib. 400 volts D .C .; Keith Blackman, type S. 8" outlet. 6£ h.p.. 440 v.— Four new 37-kW Diesel Alternators. 4-cylinder vertical S. C. Bilsby. Crosswells Road. Langley Green, near engines coupled to alternators. 400/231 volts. 50 cycles. Birmingham. *’ 1.000 r.p.m.; Eight new 30-kW Diesel Generator Sets. .C. Motors, new. 200/230 volts. 1.400 r.p.iu.; 8 to 31 i 4-cylinder vertical engines coupled to 230-volt D.C D h.p.. also 110 volts. D.C., 21 h.p.. several available generators. 1.100 r.p.m .; Twenty 8-kW, 85-volt D.C. with starters —Stewart Thomson & Sons (L pool) Ltd.. Portable Petrol-driven Generating Sets with control panels, Fort Road. Seaforth. Liverpool. 21 (Bootle 269/) or Dacre 19-h.p., six-cylinder engines.—Reed Brothers (Engineer­ House. Victoria Street. London. S.W .l (Abbe> 4017). 96 ing) Ltd.. Be vis Mark? House. London. E.C.3. 4086 6 8 E l e c t r i c a l R e v ie w Decem ber 27, 1946

OR quick sale: D.C.C., S.C.C. aud Resistance Wires. EORGE Cohen. Sons & Co. Ltd. for guaranteed Elec­ F Copper Wire, D.S.C.. 16. 18. 19. 20. 21. 23. 26. 27. G trical Plant. Motors, Geiuraiurs. Switchgear. etc. 29. 30. 31. 32. 36. 37. 39. 40 s.w.g.. .021". .019" dia. Wood Lane, London, W.12 ileitpnuut, aliepncrds Bush S.S.C., 31. 38 s.w.g. D.C.C., 1. 2. 3. 4. 5. 6. 7. 8. 9. 2070) and Stanmngley, near Lceda i Telephone, Pud»ey 10. 11. 12. 13. 14. 15. 16. 17. 19. 20. 21. 22. 23. 24 s.w.g.. 2241). Established 1834. ^ 2/ .030". .034", .038". .052". .060". .068", .084". .096", .108" NSULATING Cloth, various thicknesses. 2.o00 square dia. S.C.C., 11. 12, 16. 17. 18. 19. 20. 21. 22. 23. 24. I yards available. Prices and samples upon request. 25. 26. 27. 28. 29 s.w.g. Copper Cord, braid. 392/43 Box 579. c/o Pool’s. Aldwych House.London. W.C.2. 4094 s.w.g.. copper. Copper Braiding. 24/90/006. Wire UNCTION Electric Irons, superior design and quality, Copper Tinned. 33 s.w.g. Fuse Wire, 1 amp. Aerial J supplied with suitable stand. Also Junction Nickel- Wire, each of 400 yds.. 7/023, enam. and 7/19 bronze; plated Torch Cases. Supplied for home trade and export. 3/040 P.B., bronze; 28/35 w/clip for kite aerial, bronze. Distributors—Brooks & Bohm Ltd., 90. Victoria Street. Resistance Wire, 12. 14. 16. 17, 20. 21. 22, 23. 26. 29. London. S.W.l. Tel. Vic. 9550. 49 34. 36, 37, 39. 40. 47 s.w.g., 80/20, copper nickel. Goodman (Radio) Ltd.. 9. Percy Street. Tottenham D.S.C., 23£. 28£. 30. 21 s.w.g. Resistance Wire, oxi­ L • Court Road. W .l. are sole London agents for the dised. .0156 dia., 29. 21. 24. 30 s.w.g., oxy.-ferry. “ Midco ” Elongated Fluorescent Choke and Fluorescent Resistance Wire. 6 strands. .080", .0064" dia. Wire Starter Switches. Museum 0216. 76 Copper. 1/21 s.w.g., 100. Enamelled Copper Wire, ADDERS, single and extension, from—Ramsay & Sons stranded, -7/ 0301-19/032, aerial. Aerial Copper Wire, L (Forfar) Ltd.. Forfar. 9004 100. Enamelled Copper Wire, specially stranded, -3 /3 /3 / am in ation s. Mea. Nos. 15. 21. 47 (.014"); staiioy. 3/3/3/38. 31/38-3/3/3/3/38. enam. and str.. left bare; L 40 a. (.007); Rubber-covered Wire. 1/024, 9/012. 31/38-3/3/3/3/38. enam. and str. and cott. braided; 7/0076. large quantities. Offers please.— Box 5093, c/o 27/38, enam., str.. D .R .C .; 9/38. reg. cel. enam. and The Electrical Review. double covered varnished. Enamelled Copper Wire, ESLIE Dixon & Co. for Dynamos. Motors, Switchgear. 18/38, enam.. str., D.S.C., O/A; 729/38. enam.. str.. L Chargers, Telephones, etc.—214. Queenstown Road. cott. braid. O/A; 243/38, enam., str.. left bare; 243/38. Battersea. S.W.8. Telephone. MACaulay 2159. 18 enam., str., cott. braid, O/A; 9/36, enam., S.R.C. str.: IV/TONOMARK. Permanent London address. Letters re- 27/36, enam., str. S.S.C.. white. 3/3/3/36. D.S.C. and directed. 5s. p.a. Write—BM/M0N053. W.C.l. 68 varnished. Aerial Wire, 190 lbs.. 243/36. enam. S.S.C., IX/TOTOR Generator Sets and Convertors, all sizes and str. and cott. br. Fuse Wire, various, 1 amp. to 108 1VJL voltages from i kW up to 500 kW in stock.— amp., approx. 1 ton, for sale as one lot. Nickel Wire. Britannia Manufacturing Co. Ltd., 22/26, Britannia Walk. 14 s.w.g. Armature Binding Wire. 17, 22, 26 s.w.g. City Road. London. N .I. Telephone. Clerkenwell 5512. Copper Wire. 62 strand. .010 yd. Copper Earth Wire. 5513 & 5514. 28 7/.036 yd. Tinned Copper Wire, various, 16 to 46 s.w.g., ViAMEPLATES. Engraving. Diesinking. Stencils. Steel approx. 1.600 lbs., to be sold as one lot. Tinned Copper ^ Punches.—Stilwell & Sons Ltd., 152, Far Gosford Wire (Fuse). 18. 19. 20. 22. 24. 25. 26. 27. 28. 29. 30. Street. Coventry. 14 32. 35. 36, 38. 39. 41 s.w.g. Copper Wire, S.C.C.. 15 1VTEW i-h.p. 100/110-volt D.C. Motors. 1.800 r.p.m. s.w.g., 19 lbs.; 174 s.w.g., 550 lbs.; 184 s.w.g.. 610 lbs. continuous rating. New 1/75-h.p. A.C./D.C. Enam. Wire, S.C.C.. 13 s.w.g.. 210 lbs.; 14 s.w.g., 170 Motors 110 volt, 50 cycles continuous rating. 4.500 r.p.m. lbs. Enam. Copper Wire. 19 s.w.g., 880 lbs.; 21 s.w.g., geared down 72 to 1. New 12-volt D.C. Motors, shunt 373 lbs. Brightway Nickel Chrome Wire, 16. 17. 18, 19. 20. wound, geared down to 25 r.p.m. New A.C. Mains Trans­ 21. 26 s.w.g. Wire, D.C.C.. 29 s.w.g., 64 lbs.; 30 s.w.g.. formers. 200. 230. 250 input. 6 and 11 volts, 2 amps, out­ 45 lbs.; 31 s.w.g., 18 lbs.; 32 s.w.g., 17 lbs.; 33 s.w.g., put. New Westinghouse Rectifiers style L.T. 42 A.C. 85 lbs.; 35 s.w.g., 65 lbs.; 36 s.w.g., 40 lbs.: 38 s.w.g.. volts 11. D.C. 6 volts 1 amp. continuous.— Box 4062. 35 lbs.; 39 s.w.g., 40 lbs.: 40 s.w.g.. 35 lbs. Hard Copper c/o The Electrical Review. Strip. 1.3/16 X .025. 182 lbs.: 1.3/16 x .109. 182 lbs.—'VTISSEN Type Huts, secondhand. 24' x 16'. £52; London Central Radio Stores, 23. Lisle Street. London. 36' x 16'. £72. Plasterboard Huts and other build­ W.C.2. 3824 ings now available, some with floors. Prompt despatch OR sale in Guernsey, Channel Islands: 1,200-kVA arranged and no licence required. Inspection welcomed F Geared Steam Turbo-Alternator by A.E.G. in 1943. or write for full list from—J. Thorn & Sons Ltd.. Box 80. 400 v.. 3-phase. 50 cycles, steam pressure 450 lb. running Brampton Road. Bexleyheath, Kent (Telephone. Bexley - at 7,000 r.p.m., alternator 1.500 r.p.m., star connected, heath 305). 47 with surface condensing plant; 1,200-kVA self-coofed NE Browett Lindley Steam Engine. 160/200 lb., Transformer by Alsthom, Paris, 1943, for oil immersion. O coupled to G.E.C. 33-kW\ D.C. 220-volt. 720-r.p.m. 400 to 6.000 volts, with tappings from 6.900 to 4.700 v.. generator; two G.E.C. 33-kW, 220-volt D.C., 720-r.p.m. connected star/star, 50 cycles; 900-kVA self-cooled Generators. Inspect on site.— Cromer Ring Mill (1919) Step-up Transformer. 220 to 6.000 v.. 3-phase, 50 cycles, Ltd.. Jubilee Road. Middleton. 4030 for oil immersion, connected star/star; New 8-panel High N E 2-Cubicle B.T.H . Mercury Arc Rectifier. 150 kW. Tension Switchboard; 5-ton Hand Overhead Traveller. O type G.H.620. form B. Each cubicle output 75 kW. 60' span. 20' lift, lattice steel construction, operated from volts 230. amps. 326. Complete with transformer and ground; Two, as new, 75-ton Hand-operated Travelling bulbs. New in 1938. Little used. Purchaser to remove Gantry Cranes. 40' span. 20' lift, fabricated steel con­ from existing site. Price £600.—West Gloucestershire struction. approx. weight 35/40 tons; Good Secondhand Pnwer Co.. Ltd.. 126. London Road. Gloucester. 3961 Locomobile Type Compound Condensing Steam Engine NE 8-h.p. totally enclosed Vertical Fan Motor, Lanca­ and Boiler by Heinrich Lawy, built 1919. for 170 lb. O shire Dynamo make, for 200 v.. 2-ph.. 50 cys., at working pressure, cylinders 10" and 20" dia. x 24" stroke, 950 r.p.m.. with starter complete. Ex stock.—H. J. H. two 10' flywheels and surface condensers; Three 3-ton King & Co. Ltd.. Newmarket Engineering Works. Nails- Electric Portal Type Level Luffing Dock Cranes. 52' worth. Glos. 4119 lattice steel jib. with portal 18' high x 28' wide, 440 v. SMOR Radio Heart equals complete first-class 5-valve D.C.—Reed Brothers (Engineering) Ltd.. Bevis Marks O Superhet. positively only small condensers and resist­ House. London. E.C.3. 3896 ances to find. Super-efficient components. Building in­ RINGES. Braids. Tassels for lampshades always in structions. £5 16s. Cabinets. Trade invited.—Morgan F stock.—Philip Cohen. 77. Great Portland Street. Osborne Ltd.. Southview Rd.. Upper Warlinghain 25C0. London. W .l. Langham 1385. 38 SurTPV 101 ENERATING Sets. 'Thoroughly overhauled, tested HONE 98. Staines. 250-kW Steam Generating Set. G and guaranteed. Lister, 22 kW. self-contained, all P 220 v. D .C .; 25-kW Mirrlees Diesel Set. 110 v. D .C.; D.C. voltages, tropical finish.—Box 4083. c/o The Elec­ 60-kW Allen Semi-Diesel Set. 220 v .; 2£" Electric Turbo trical Review. Pump. 346/3/50: 5-kVA Ruston Diesel Set. 400/1/50; OUSE METERS, 200/240 V. A.C., s/ph.. 50 c. Price Large Hot Water Boiler, about 900.000 b.t.u.’s.—Harry H 17s. 6d. plus Is. carriage.—Universal Electrical. 221. H. Gardam & Co. Ltd.. Staines. 60 City Road. London. E .C .l. 129 LATING Dynamos (2). 9£ volts. 900 amps., 1.000 OUSEHOLD Electrical Appliances a speciality. A P revs.. B .B .. unused, by Crompton-Parkinson, also H variety of 1-kW and 2-kW Electric Fires (portable numerous D.C. Motors from 1 h.p. to 50 h.p. cheap to and inset types). Artificial Coal Fires. Boiling Rings and clear.—W. H. Sugden & Co. Ltd.. Glenny Road. Barking. other Portable Heaters and Cookers; Hot Plates. 3956 Radiators. Convector Heaters, Kettles; a variety of EBUILT Motors and Generators. Long deliveries can Electric Irons; Table Lamps and Shades, Radios. Moving R often be avoided by purchasing rebuilt secondhand Coil Pick-Ups, Fans, Hair Dryers; Accessories. Flexibles. plant. We can redesign or replace surplus plant of any Switches, Torch Cases and Lighting Batteries. New size. Send us your enquiries. Over 1.000 ratings actually articles’ added to list weekly. Lists and illustrations on in stock here.—Dynamo & Motor Repairs L td.. Wembley application.—Brooks & Bohm Ltd., 90. Victoria Street. Park. Middlesex (Telephone, Wembley 3121, 4 lines) - also London. S.W.l. Phone, Victoria 9550-1441. Inland at Phoenix Works. Belgrave Terrace. Soho Road Hands- Telegrams: Beebatts. Sowest, London. 66 worth. Birmingham (Telephone, Northern 0898) % 27, 1946 December E l e c t r i c a l R e v ie w 69

T>ENCIL Bars, all sizes, finest quality screweut, wound B.T.H. 230/1/50 Alternator, ft kVA. 1.500 r.p.m. iiw i/n T h 0® 1 regular supplies immediately—Box 1 6 230/1/50 Extractor Fans by Verity. 18" dia . d102. c/o The Electrical Review. 700 r.p.m. 1 B.T.H. M.G. Set. input 400/3/50. out P L A T IN G Generators, unused, several ranging from 350 put 2.5 kW. 110 volts D.C. 1 Crompton Parkinson M.G to ,00 amps., 6 to 12 volt, plain or with A.C. or Set. input 440 volts D.C.. output 12/16 volts. 30 amps D.C. motor drive. Particulars from—Stewart Thomson D.C. 1 Newton M.G. Set. input 220 volts D.C.. output & Sons (Liverpool) Ltd.. Fort Rd.. Seaforth. Liverpool.21 90 volts. 190 amps. D.C. 1 David Brown Radicou (Bootle 269,); or Dacre^House. Victona Street. London. Reducing Gear, output 4 h.p.. input speed 1.450 r.p.m.. S.W.l (Abbey 4017). 6;i reduction ratio 46:1. 1 Heybeard Rectifier, input P - V .C . Flex and Bell Wire, coloured and transparent. 230/1/50. output to suit 26 cells. 7.5 amps., charge cur­ single, twin, triple and four-core, large variety, from rent with trickle charging device. 1 D.C. Welding Gs. 9d. per 100 yds. Send 6d. for samples and lists. Generator by Electromotors. 4.4 kW. 29/70 volts. 1.200 Also in stock. Electric Clocks. Heating Pads. Fires. Ext r.p.m. with exciter. 1 Crompton Parkinson M.G. Set. Speakers. Plugs. Sockets. Cable. Accumulators, etc.— input 400/3/50. output 60 volts. 400 amps, with direct Northern Industries. 199 Broughton Lane. Salford 7. 131 coupled exciter.—Oldfield Engineering Company Limited. OTARY Converters in stock, all sizes; enquiries 96. East Ordsall Lane. Salford 5. 3988 R invited. — Universal Electrical. 221. City Road. 1 Zeros Refrigerator for wall. 230 volt, cabinet No. 30397. London. E.C.l. • 161 inside dimensions 14i" x 18£" x 27" deep. Gassing T >O TA R Y Converters. 200-kW. 6.600/3/50 input. 230 system needs attention. Seen by appointment in Birming­ J-V volts. 2-wire D.C. output, complete with Trans­ ham.—Etna. Broad Street. Birmingham. 4100 former and switchgear. seen running in Liverpool. 2.000- A tons of 19-20-gauge Enamelled Covered Copper Wire. kW. 6.600/3/50 input. 418/462 volts, three-wire D.C. wound on coils from 1-2 lbs. in weight. These coils output, complete with transformers, starting panels. D.C. are surplus armature and field coils covered with cambric machine panels. First-class condition. Two sets avail­ tape. The wire is clean and has not been impregnated. able.—Stewart Thomson & Sons (Liverpool) Ltd.. Fort —Box 4132. c/o The Electrical Review. Road. Seaforth. Liverpool. 21 (Bootle 2697); or Dacre £7-kW and 2£-kW. 230/250-volt D.C. Generating Sets. House. Victoria Street. London. S.W .l (Abbey 4017). 72 complete with 4-cylinder. 10-h.p. Austin Engines, O A CKS. good quality, perfectly clean. 36 x 24. 100 with petrol tanks, radiators, fans and switchboards. Large ^ heavy quality. 2s. 6d. each: 6.000 lighter quality. number available.—Britannia Manufacturing Co. Ltd.. Is. 9d. each. Sold only in minimum lots of 1.000.—Box 22/26. Britannia Walk. London. N.I. 103 4134. c/o The Electrical Review. 1 £7-h.p. 2-speed S. Cage Motors. 960/475 r.p.m., L.D.M. OINGLE-Phase Slip-Ring Induction Motors. 1 30 h.p., b. brgs., 3 available. Price £50 each.—Electric 1.000 r.p.m.. 200/400 volts by Brook: 1 15 h.p., Machinery Co.. Union St.. Ancoats. Manchester. 3950 1.500 r.p.m.. 200 volts by Brook: 1 15 h.p.. 1,450 r.p.m.. O Q and 28-s.w.g. Nickel/Chrome Resistance Wire, reason- 200 volts by A .S.E .A .: 1 15 h.p.. 950 r.p.m., 200 volts able quantities, immediate delivery.—Box 5069. c/o by Fuller; 1 3 h.p., 1.450 r.p.m.. 460 volts by Hopkinson. The Electrical Review. Squirrel Cage. All the above motors fitted with ball £7-h.p. *' Brittain ” 960-r.p.m. Squirrel Cage Motor for and roller bearings.—Oldfield Engineering Company * 415/3/50. with oil-immersed starter.—Thos. W. T irnited. 96. East Ordsall Lane. Salford. 5. 3987 Ward Limited. Lancaster Place. Strand. London. W.C.2. O P IR A L Elements for electric fires, boiling rings, and Telephone No. Temple Bar 9631. 3869 ^ other appliances, supplied to order.—Electrothermal 1 Unused Flat Top Bogie Trolleys, oak platforms. Engineering Ltd.. 270. Neville Road. London. E.7. 54 5' x 3' X 15£" high, oak bearers, swivelling PIRALS, first quality, 500, 600. 750 and 1.000 watt, bogie with 36" drawbar; with 4 iron wheels. 11" dia.. S all voltages, for immediate delivery.—Box 59. c/o £7 10s. each: with 4 solid rubber-tyred wheels. 12" dia.. The Electrical Review. £10, delivered. Also 100 Unused Samson Type Trolleys OTAFF Time Checking and Job Costing Time Recorders for machinery handling, oak. 22" x 17" x 5£" high. ^ (all makes) for quick cash sale. Exceptional con­ 4 iron wheels 3" dia. and central wheel 3£" dia.. 70s. each, dition. Write — Box 528. Smiths. 100. Fleet Street. delivered. Inspection works. 40. Cuba Street. Millwall London. E.C.4. 31 (East 3958).—Reed Brothers (Engineering) Ltd.. Bevis TEAM Generating Plant. The following is a selection Marks House. London. E.C.3. 3752 S of sets available in our comprehensive stock : 2.000-kW I I O Siemens Apex 15-amp., 250-volt Switchfuses. B.T.H. Turbo-Alternator. 6.600/3/50.180/210-lbs. pressure, secondhand, perfect order. Best offer by Jan. complete with surface condenser and all auxiliaries, seen 4th secures.—B. & S. Electrical Contractors Ltd.. 1 Bridge running. 1.250-kW Brush Ljungstrom Turbo-Alternator. Street. Guildford. Surrey. 4115 400/3/50. 200 lbs. pressure, complete with surface conden­ O O /V kV A Auto Transformer. O.I. starter.—S. C. Bilsby. ser and all auxiliaries, seen running. 750-kW Adamson/ Crosswells Road. Langley, nr. B ’ham. 4106 Mather & Platt High-pressure Pass-out Turbo-Generator. 9 ^ 0 ’kW Rotary Converters (2). with transformers and 200-lbs. initial steam pressure, passing out 25.000 lbs. per switchgear. input 6.600 volts. 3-phase, 50 cycles, hour at 80-lbs. pressure. 500 volts, three-wire D.C.. with output 420/210 volts: also A.C. and D.C. Motors. Switch­ balancer, complete with surface condenser and all auxili­ gear. Generating Sets. Welders, etc.—Midland Counties aries. First-class condition. Full particulars from— Electrical Engineering Co. Ltd.. Grice Street. Spon Lane. Stewart Thomson & Sons (Liverpool) Ltd.. Fort Road. West Bromwich. 36 Seaforth. Liverpool, 21 (Bootle 2697); or Dacre House. yards 19/17-s. Cable. 4-core, paper, lead covered Victoria Street. London. S.W .l (Abbey 4017). 98 ^ f ' A" ancj tape armoured, very little used: can be seen S U P E R IO R Type Builders’ Ladders now in production: working.—Box 3986. c/o The Electrical Review. ^ also Steps. Trestles and Extension Ladders. Phone-j- /? /'\/V w . an. 8- wanted. We will repair and rewind if necessarv. Write, O Kohler 100-volt. 11-kW Automatics, ex. cond.—Box stating price, etc.. to—A. P. Watson. 104a. Upper Brook 3916. c/o The Electrical Renew. Street. Manchester. 13. 126 7 0 E l e c t r i c a l R e v ie w Decem ber 27, 1946

.C. Motors wanted urgently, all sizes and voltages. RMATURE. Rotor and Stator Rewinds and Repairs; A Best prices offered.—John Phillips & Co. Electrics. A fractional to 100 h.p. Prompt deliveries.—T . A. 31, Fortune Green Road. W. Hampstead (Hampstead Boxall & Co.. Horley. Surrey. Phone 654. 989o «132). 127 RISCOE Plating Co. Ltd. now have available capacity BOUT Fluorescent Tubes, top prices paid. Any quan­ B for Silver and Nickel Plating and quantity produc­ A tity. 10" and 12" pencil elements. Any electrical tion of Electrkal and Household Products, in which we surplus, etc. Write— Adams, 114, Stroud Road, Shirley. are specialists. Enquiries invited to—3-5, Maddox Street, Warks. 5058 London. W.l. 123 RASS Rods. Brass Sheets: We are prepared to buy in /CAPACITY available for coiT winding, impregnating. B practically any quantity small diameter Brass Rods ^ engraving and light machine work.—Castlenau and Brass Strips or Sheets. Please state exact size with Instruments Ltd., 50, Glentham Road, S.W.13. 37 limits, quantity available and condition.—Box 4133. c/o /C a p a c i t y available for light assembly, February. The Electrical Review. ^ March. Some machining, London area.— Box 91, 1ABLE. P.I.L.C.A.S.. wanted urgently: 110 yds. .5 sq. J c/o The Electrical Review. C in., 3-core; 140 yds. .1 sq. in., 3-core; 110 yds. .06 NGINEERS, Precision, South England, seek manu­ sq. in.. 3-core; 160 yds. .0225 sq. in., 3-core; 50 yds. .06 sq. in., 4-core; 50 yds. .0225 sq. in., 4-core.—Box E facture of electrical, mechanical or domestic 4067, c/o The Electrical Review. assemblies or components. Press tools, gauges, small NAM ELLED Copper Wire, 44. 45 and 46 s.w.g., any stampings, capstan turning, also Internal and External E quantity purchased. Also require capacity for small Grinding. Write— Box 74, c /o The Electrical Review. Acetate Coil Bobbins.—Instrument Movements Co., St. ACTOR Y Capacity up to 100,000 sq. ft. available for Peter’s Road. Dunstable, Beds. 5104 manufacture and assembly work. Fine modern n am elled wire, 5 cwts. 30 s.w.g., 5/10 cwts. factory, situated on riverside. North-West Kent area. E 32 s.w.g. urgently needed. Give full details of Own wharf, road and rail access. Owners desire working make, reel weights, etc. to—Box 4145, c/o The Electrical agreement to manufacture any articles in large demand. Review. Inquiries treated in confidence.— Box 19, Brandis Davis. NGINEERING Technical Books (new or secondhand) 231. Strand. London, W.C.2. 4151 E wanted in any quantity. Attractive cash offers. Call OR Fractional H.P. Motor Rewinds and Repairs you —Third floor, 356, Oxford Street. W .l. or “ Stoneleigh,” F cannot do better than send them to “ Autofraction.” St. George's Avenue, Weybridge. 62 We have a lifetime of concentrated experience in this IRE Bar Elements (Flat), 9" X 3", 1 kilo.; also 5 to field. Our work is high class and gives confidence to our F 15-amp. Switches. Large or small quantities. Offers customers. Why not send us your enquiries?—The Auto- to—Supreme Electrical Manufacturers, 3, Downs Road, fraction Motor & Eng. Co., 106, Beaconsfield Rd., Southall. Epsom, Surrey (Phone, Epsom 1358). 9712 Middlesex (Phone. Sou. 3598). 5092 LUORESCENT Lamps, 5 ft., urgently required, any NSTALLATION and Maintenance of Internal Tele­ F quantity, best prices paid. Collected London area.— I phones—London company with branches in the Box 111, c/o The Electrical Review. larger centres, would like to hear from reliable electrical RACTIONAL H.P. Motors. Large quantities required, contractors, who are interested to undertake the installa­ F but open to purchase any quantity. Cash with order tion and maintenance of small internal telephone systems, or advertisers would consider financial assistance to manu­ in Kent, Suffolk, Norfolk, Lines, Leics, Notts, Derby, facturers in production. Write— BCM /M TL. London. 4114 Wales, Somerset. Devon. Cumberland. Westmorland, Isle ENERATO R Set. automatic control, 200 V.. 2 kW, of Man and Eire.—Box 4056. c/o The Electrical Review. G petrol driven.—Mears Bros. (Contractors) Ltd.. ly/TACHINING Work, for Centre Lathes up to 6£ in. Sydenham. S.E.26. 4101 centres and medium-sized milling (good grade work AMINATIONS. Large types required m any reason­ preferred).—The London Electric Firm, Croydon. Up­ L able quantities, T's and U’s; also 75’s and 4A's.— lands 4871. 56 Comercroft, Fallibroome Road. Macclesfield. 95 1Y/TECHANICAL Engineering Designs, Drawings, Tracing AMPSHADE Frame Gimbals. —Box 5087, c/o The and Printing confidentially and promptly executed L Electrical Review. by experienced staff.—Sharpe & Gates (Technical Services) 1\yTETAL or Bakelite Galleries required for 3* and 4 Co., Station Buildings. Raynes Park, S.W.20. 5083 I tJL Lip Glass Shades. Send samples with prices and 'V/|~IDLAND firm with skilled electricians wish to contact quantities available to—Litecraft Products, 17. Oswald 4-’-*- firms who require sub-contractor for Assembly Work Street. Glasgow, C .l. 4.090 of any type. Panel Wiring, etc. — Box 5099, c/o The HOSPHOR Bronze Strip, 26 s.w.g., urgently required Electrical Review. P in small or large quantities, i " width preferred but not essential.—Box 5084. c/o The Electrical Review. O H O T Blasting and Metal Spraying. We are able to \I7 A N T E D . D.C. and A.C. ball-bearing Motors. Full k-J undertake the efficient and prompt handling of all ▼ ▼ details to—Britannia Manufacturing Co. Ltd.. 22/26. goods sent for treatment. Large capacity available. Britannia Walk, London. N.I. 29 Enquiries to—Commercial Structures L td., Staffa Works. ANTED. Rotary Converters, any size.—Universal, Staffa Road. E.10. 112 W 221. City Road. London. E.C.l. 22 ANTED. Contracts for Metal Work to specification. ANTED, within 12 months. Modern Rotary Conver­ We supply material.—Box 5089, c/o The Electrical W tor or Rectifier, new or secondhand. Any size, 75 to Review. 150 kW. output at 440 volts, input 400 volts, 3-phase, T \ 7 E can supply all types of Presspahn Insulating pieces 50 cycles.—Fraser & Borthwick Ltd., 12a, College Square ’ * to specification, and would appreciate enquiries.— North, Belfast. 4082 Tradex Manufacturing Co.. Tradex Works. Swindon. 4099 -h.p., 230-v. A.C. or D.C. Motor.—Universal Electrical. ‘YA^OODTURNING to our design of Electric Table Stan 1 221. City Road. London, E.C.l. 25 dards. Timber licence supplied.—Box 5088, c/on l' Rotary Convertor, 400 kW, 6-phase, 230 volts D.C., to The Electrical Review. 1 transformer, preferably transformer at 400 volts with star point brought out; 1 Rotary Convertor, D.C. 220 v., AGENC/ES A.C. 400 v., 50 cycle, 3-phase.—William Tatton & Co. A GENCIES required for London, South of England, for Ltd., Upperhulme. nr. Leek, Staffs. 124 the following: (1) Domestic electrical appliances; 150 or 200-h.p. (or near), 950-r.p.m. Slip-ring Motor. (2) Brass electrical accessories, switch plugs, etc. : (3) Con­ 1 3,000 or 400v.. 3-ph.. 50 cycles, complete with standardduit. Advertisers have clientele with every wholesaler in control gear.—Box 4127. c/o The Electrical Review. the territory mentioned. Immediate turnover can be A n n kW Reciprocating or Turbine-driven Alternator, guaranteed. Either commission or buying basis. Post­ war arrangements considered.—Box 64. c/o The Elec­ O U U 440 volts, 3-phase. 60 cycles, 150 lb. pressure. trical Review. 100° F. superheat; 1.200 kW ditto Set.—Box No. C.253, Glovers Advertising, Mark Lane, Bristol, 1. 5050 A GENCIES required. South of England, including the - London area; (a) Cables: (b) Small Switchgear; (c) WORK WANTED AND OFFERED Transformers: or any lines suitable for distribution for Progress System can be put into your factory to wholesalers' business.—Box 40. c/o The Electrical Review. A increase and stabilise production. Details—S. Green. I^ X P O R T of Oil Engines. Manufacturers of engines and 42. Hertslet Road, London, N.7. 5082 adherent accessories not yet firmly represented abroad A LL makes and kinds of Electrical and Radio Measuring are offered the facilities of a comprehensive export organ­ Instruments repaired by skilled technicians, A.I.D. isation controlled by one of the largest engineering trading approved. All work quoted by return without charge. concerns m the country.. Advertisers have own assembly Also for sale, large variety of Voltmeters, Ammeters. shops, showrooms, shipping department, skilled staff and Milli-ammeters. 2" and 2£" dials, reconditioned ex-Air City office They are in te r r e d in representing only well- Ministry stock.—W. O. Prescott L td., Dept. A. 29-31, known makers of equal standing to their own Fnr f.irthpr Cowcross St.. E .C .l (Tel. Cle. 6783). 9670 details write to-Box 4093. c/o The ÈL2trical Reidew December 27, 1946 E l e c t r i c a l R e v ie w 71

T?NGINEER. .VM.Brit.I.R.E., M.I.R.E.. travelling T AMPSHADES and Electrical, West London. Unique ^ Denmafk early January, will undertake and exclusive business of character. Turnover £80 »! commissions or representation communication and elec­ per week. Low rental. £1,200 S.A.V.—John Swait Ltd.. ft tronic systems, components, etc.—Box 5103. c/o The Electrical Review. 34. Mall. Ealing (Tel. Ealing 2866). 4085 EXPERIENCED Sales Engineer with leading manu­ BUSINESS PREMISES facturer, free to take additional agency (London TTRGENTLY required. Factories in London and suburbs. 1 area). Box 5037, c/o The Electrical Review, ^ Areas from 5.000 to 100,000 sq. ft. Send particulars f ONDON company experienced in successful distribu- in confidence to—Leopold Farmer & Sons. Factory Agents. tion of electrical products through wholesale trade 46, Gresham Street. E.C. (Tel. Monarch 3422). 4069 seeks sole representation for V .I.R . and P.V.C Flexes and Cables. Brass and Bakelite Accessories. Would con­ sider Continental if import possible. —Box 61. c/o The EDUCATIONAL NOTICES Electrical Review. t^N G IN E E R IN G Careers and Qualifications. Both Government and industry have announced and ■JVTANUFACTURERS’ Agents, covering the whole of emphasised that young men with technical knowledge Great Britain and Colonies, are desirous of contact­ and qualifications must receive every chance of rising to ing manufacturers with a view to sole selling rights (either the highest posts within their capacity in post war commission or buying), post-war arrangements considered. engineering and allied industry. Write to-day for “ The —Box 23. c /o The Electrical Review. Engineer’s Guide to Success ” —200 courses—free—which ■jV/TANUFACTURERS. Agents with offices London and gives particulars of the first-class training supplied ■LfA- South Coast wish to hear of additional lines, includ­ by the T.I.G.B. for the A.M.I.E.E.. A.M.Inst.C.E.. ing Cables and Domestic Appliances, for sale to corpora­ A.M.I.Mech.E.. A.F.R.Ae.S., A.M.I.P.E., B.Sc.(Eng.). tions. wholesalers and retailers. — Box 5077, c/o The C. & G., etc.. examinations in which T.I.G .B. home-study Electrical Review. students have gained 44 first places and over 1,000 passes. ■JV/TANUFAd'CRING and Distributing Company, cover- The Guide covers careers in all branches. Electrical. ing the British Isles, and having important export Mechanical. Radio, Aeronautical, etc.—The Technological connections, are desirous of handling additional products Institute of Great Britain, 35, Temple Bar House. London. suitable for the electrical, hardware and ironmongery E.C.4. 77 trades, preferably sole distributing rights. Substantial T ATEST A.M.I.E.E. Results. In the examinations held contracts will be placed for suitable lines. Reply—Box by the Institution of Electrical Engineers 646 can­ T.P.195. c/o Maurice Vernon Ltd., 2. St. Andrew’s Hill. didates sat who had taken B .I.E .T . courses. Of these Queen Victoria Street. E.C.4. 61 620 were successful in passing the examinations. We believe ÔOUTH African Importer, well represented in all this record of 620 successes out of 646 entrants has never provinces, including South-West Africa and both before been approached by any oral or correspondence Rhodesias, would like to secure Lam p Agency from reliable tutorial organisation, and indicates the very high efficiency quality British factory.—Box 4073. c/o The Electrical of the modern system of technical training which we have Review. laid down. The B.I.E.T . tutorial organisation is waiting to assist you either with a short specialist course or com­ BUSINESSES FOR SALE AND WANTED plete training for a recognised examination. We have UTO - Electrical and Battery Business for sale as available a large full-time staff of instructors, while the A flourishing concern. Well-known sole agencies and efficiency of our extensive organisation is a byword among extensive goodwill. Well equipped and stocked and com­ engineers. We guarantee— “ No pass—no fee.” May we petently staffed. Excellent premises on low rental. All send a copy of "Engineering Opportunities” ? Containing equipment, including test bench and van. Price complete. a great deal of useful advice and detailed information on £1,500. plus stock at valuation approx. £500..East Riding, over 200 home-study courses and examinations, this hand­ Yorkshire.—Box 5094, c /o The Electrical Review. book is of very real value to the ambitious engineer. Our highly informative handbook will be sent free and without ELECTRICAL Contractor’s and Retailer’s Business, obligation on request.—British Institute of Engineering Essex area. 40 miles London. Sound business, every Technology (established 1927—over 200.000 students), investigation and trial encouraged. Good lease and posi­ 12, Shakespeare House. 17. 18 & 19. Stratford Place. tion. Turnover approx. £10,000; goodwill £3,000; approx. Oxford Street, London, W .l. 33 S.A.V. £3.000.—Box 3922, c/o The Electrical Review. LECTRICAL Contracting Business with premises on LASTICS offers particularly good prospects to experi­ P enced Engineers with a sound knowledge of Plastics E low rental in busy N .E. town. Staff of ten with Technology. Authoritative home-study courses are now excellent equipment and stock. On all Ministry lists and available in General Plastics and specialised branches of substantial contracts now in hand. Fixtures, fittings, the science. Full details of these courses and the prospects equipment, stock, etc.. and goodwill. £2,600.—Box 5095. in the rapidly expanding plastics industry will be found c/o The Electrical Review. in our handbook " Opportunities in Plastics ” —sent free OR sale as a going concern, old-established firm of on request.—British Institute of Plastics Technology F Registered Electrical Contractors in Northern Ireland, (Dept. 301). 17, Stratford Place. London. W .l. 3822 owner retiring. Replies principals only.—Box 4124, c/o The Electrical Review. [ Continued on page 72.]

The “ M0 0 RH0 USE” One-piece cable connector Manufactured by SPERRYN & CO. Moorsom Street, Birmingham Established over 50 years

: Also Manufacturers of \

\ General Electrical Accessories : 72 E l e c t r i c a l R e v ie w December 21, 1946 BUSINESS OPPORTUNITIES TV/TANUFACTURERS of fluorescent lighting auxiliary equipment wish to contact sheet metal manufacturers who are in a position to offer Fluorescent Lighting Fittings ^ V a c u u m C l e a n e r s ' or who would be prepared to manufacture same.—Box 5085. c/o The Electrical Review. and e/ectr/co/ CEMCO Ltd., Fluorescent Lighting Specialists, wish to S contact manufacturers of electrical equipment and L S UPPLIES L ?J accessories, including “ Novelty ” and “ Improved appliances. Domestic fluorescent fittings and components ~/or~ of particular interest. When possible complete output will Components for all be taken, and full co-operation given in exchange for sole PBOMPT types of Vacuum distribution rights. Replies will be treated with strictest W H O L E S A L E confidence.—Man. Director. Scemco Ltd., Scemco House, Cleaners, Hose, 6/7, Soho Street. London. W.l. 119 SUPPLIES Brushes, Belts, Bear­ HOLESALERS invited to send for price lists, etc.. ings, Commutators, W of Imitation Coal Fires and Radiators, patented SEND EOQ PP/CE ¿./ST. . . Fans, etc. features.—Firenheat Ltd., 5. Buckingham Street, Strand, London. W.C.2. 5080 543, MOSELEY ROAD.BIRMINGHAM 12 PATENT NOTICES 'IV'OTICE is hereby given that Stoves Ltd. and Samuel Edward Allan Ryder seek leave to amend the speci­ fication of Letters Patent No. 577962, entitled “ Improve­ ments in cooking stoves, having thermostatic control devices.” Particulars of the proposed amendment were set forth in the Official Journal (Patents), No. 3021, dated December 18th, 1946. Any person may give Notice of Opposition to the amendment by leaving Patents Form No. 19 at the Patent Office, 25, Southampton Buildings. E.L.M.A BELL London, E.C.2, on or before 18th January, 1947.—H. L. only PROMPT DELIVERIES WIRES Saunders. Comptroller-General. 4081 LAMPS OF ATENT Agents.—A. E. Hill, Chartered Patent Agent, & BATTERIES P 27, Chancery Lane, London, W.C.2. Tele. Chancery AUTO H.T. BATTERIES FLEXI­ 8444. 88 FLASH AND BLES HE Trade Mark AGILUX (No. 635101), registered in CYCLE and T respect of electrical apparatus and instruments not L.T. ACCUMULATORS included in Other classes, scientific, nautical, photographic, BULBS CABLES cinematographic, optical, signalling and checking (super­ etc. etc. vision) instruments and apparatus, was assigned on the 21st May, 1946, by Aeronautical & General Instruments 244 TOTTENHAM COURT ROAD Limited, of Purley Way, Croydon, to Agilux Limited, of Purley Way. Croydon, without the goodwill of the business LONDON, W.l in connection with which it was then in use. 4078 MUSeum 5351 Established 1919 PARTNERSHIPS RACTICAL Partner wanted for Electrical Contractors P in Cambridgeshire. Good opportunity for man with small capital.—Box 5078. c/o The Electrical Review. PEN IN G occurs for Electrical Engineer or man with POWER TRANSFORMERS O electrical engineering knowledge suitable for con­ sultative work. Opportunity for investing approx. £2,000 of Q U A LITY in progressive London firm with good contacts and prospects. Directorship will be considered.—Box 5043, c/o The Electrical Review. up to 10 kVA (As supplied to MISCELLANEOUS H.M. Government) ATTERY Chargers Modernised. Your old Charger made B like new by specialists. Conversion from valve to metal b/THE TRANSFORMER rectification. Send for interesting leaflet "Q.D.” on this service.—Runbaken Electrical Products. Manchester, 1. 45 & ELECTRICAL CO. LTD. T^XPERT Technical Translations. Write — Box 5079, Eastern Works, Eastern Rd. c/o The Electrical Review. HORTHAND Typists, Private Secretaries. Clerks, etc. Walthamstow, E.I7 S If you are in urgent need of staff, contact Embassy Telephone : Keystone 5031-2 Secretarial Employment Bureau, Excel House, Whitcomb Street. W.C.2 (Whitehall 5924). We specialise in efficient Available Capacity — Immediate Delivery personnel. 90

DOLPHIN ENGINEERING CG. LTD. STERLING WORKS. DAGENHAM. (SEVEN KINGS. 3 4 EE) Decem ber 27, 1946 Electrical R r v i r w 73

Switchboards of all types for A.C. and D.C., open or enclosed

f r t r *-*- _ ...• ...... | n i l

? ? % 1 1

Illustration shows typical Marine Main Switchboard LITHOLITE INSULATORS & recently manufactured ST. ALBANS M OULD iN GS LTD W illiam McGEOCH & Co. Ltd. Warwick Works, BIRMINGHAM 10 WATFORD also GLASGOW and LONDON 'PHONE: WATFORD 4494

ITONIA — BATTERIES — are DEPENDABLE

All types of Lighting W R IT E FOR CATALOGUE and Radio Dry Batteries E.R./ITO

AUASTILV ITONIA BATTERY lct°d TENSIONh|gh FPOLES W L L- J 3-10 Leeds Place, Tollington Park L O N D O N , N.4. Tel.: ARChway 4311/2 r . . _ _ I T D TYBURN R° ERDINGTON. POLES L_ BIRMINGHAM.2 4 . , 7 4 E l e c t r i c a l R e v ie w December 27 1946

Index to Advertisers PAGE Aberdare Cables Ltd ...... Cover iv Aerialite Ltd ...... 90 Agro Electrical Co. Ltd ...... 100 Air Ducts Ltd...... 110 Alfa-Laval Co. Ltd ...... 100 Allen, W. H., Sons & Co. Ltd ...... 37 Alton Battery C o. L td ...... 47 ^ ACCURATf /WO/CATION Arcolectric (Switches) Ltd ...... •...... 110 Arrow Electric Switches Ltd ...... 99 Associated Dynamo & Motor Manufacturers 5 Qf EVERY Bakelite Ltd ...... 40 foftm Baldwin Instrument Co. Ltd ...... 96 Barries Electrical Agencies Ltd...... 96 B.E.N. Patents Ltd ...... 76 Benham & Sons Ltd...... 94 Bill Switchgear Ltd ...... 3 Braithwaite & Co. Engineers Ltd...... 19 Bray, George, & Co. Ltd ...... 86 Britannic Electric Cable & Construction Co. Ltd.... 38 British Insulated Callender’s Cables Ltd ...... 9 British Jewel Manufacturing Co. Ltd...... 82 British Mica Co. Ltd ...... 112 British Thomson-Houston Co. Ltd ...... Cover i 2000 British Vacuum Cleaner & Engineering Co. Ltd 86 2503 Britmac Electrical Co. Ltd...... 17 Brooks & Bohm Ltd...... 106 .3000 Bruce Peebles & Co. Ltd...... 2 Brush Electrical Engineering Co. Ltd ...... 29 4000 Burco L td...... 28 Burn, George, Ltd ...... 16 BX Plastics Ltd ...... 50 By lock Electric Ltd ...... 34 Caxton Wood Turnery Ltd...... 14 Celestion Ltd ...... 34 Consolidated Pneumatic Tool Co. L td ...... 7 DESIGNED AND CALIBRATED FOR EVERY PURPOSE Cornercroft (Plastics) Ltd ...... 35 Crompton Parkinson Ltd ...... 42 & 87 Speed, which has always been prized by Croydon Engineering Co. Ltd ...... 78 mankind, has become today a vital factor in Cryselco Ltd ...... 4 Davall Bros. Ltd ...... 30 industry—a factor which must be measured Davis & Timmins Ltd ...... 112 and controlled for its many purposes. For Dennis, G. P., Ltd ...... 75 this measurement there are no more accurate Diamond H Switches...... 20 Dolphin Engineering Co. Ltd ...... 72 instruments than A.T. Indicators, as these Donovan Electrical Co. L td ...... 76 have a movement that stands up to the most Drake & Gorham Wholesale Ltd ...... 8 gruelling conditions. Drayton Regulator & Instrument Co. Ltd ...... 110 Duratube & Wire Ltd ...... 20 These instruments are available for practi­ Elcordia Ltd ...... 78 cally every form of speed indication. Their Ellison, George, Ltd ...... 103 unwavering reliability is made possible by a Enfield Cables Ltd ...... 36 jewelled movement of simple design and ro­ Engineering & Lighting Equipment Co. Ltd ...... 33 English Electric Co. Ltd ...... 21 bust construction ; by individual attention at Ensel Electric Co. Ltd ...... 108 every stage of making, testing and calibrating. Ensign Lamps Ltd ...... 44 A.T. Indicators can be waterproofed and Erg Industrial Corporation Ltd ...... I l l Evans, F. W., Ltd ...... 112 tropicalised for marine and oversea duty, and Everett Edgcumbe & Co. Ltd ...... 54 can be calibrated to meet particular needs. Fan Manufacturers’ Association Ltd ...... 105 Available with dials from to 9 " diam., Ferranti Ltd ...... 11 & 45 Finch, B., & Co. L td...... 30 and revolution counters with or without trip Finlayson, Bousfield & Co. Ltd ...... 75 mechanism may be incorporated in instru­ Fisher, Marcus, & Co. Ltd ...... 75 ments from 4 " diam . Flextol Engineering Co. Ltd...... 106 Fluxite Ltd ...... 14 Fox, C. J., & Sons Ltd ...... 80 A\ Geipel, William, Ltd ...... 110 General Electric Co. Ltd ...... 46 & 58 Godwin, H. J., Ltd ...... 106 Gowshall Ltd ...... 78 A. T. INDICATORS Graseby Instruments Ltd ...... 94 A product of Grey, John A., & Partners Ltd ...... 12 Harland Engineering Co. Ltd ...... 6 Hawkins, L. G., & Co. Ltd...... 16 Heatrae Ltd ...... 1 Henley’s, W. T., Telegraph Works Co. Ltd 13 & 41 0 Hick, Hargreaves & Co. Ltd...... 77 Higgs Motors Ltd ...... 31 SMITHS INDUSTRIAL Horstmann Gear Co. Ltd ...... 8 Howden, James, & Co. (Land) Ltd ...... 56 Iddon, Victor H., Ltd ...... 91 INSTRUMENTS L,u Igranic Electric Co. Ltd ...... 101 CRICKLEWOOD WORKS, LONDON, N.W.2 Imp Radio Ltd ...... 96 The industrial Instruments Division of S. Smith & Son Imperial Chemical Industries Ltd ...... 93 (England) Ltd. Associated Companies : A. T. Instru Injection Moulders Ltd ...... 98 ments Ltd., David Harcourt Ltd. (Continued on page 76) December 27, 1946 E l e c t r i c a l R e v ie w 75 CABLES

FIN LAY SON BOUS FIELD S CO. LTD- • JOHN STONE • SCOTLAND

¿ l e c b a c , ALARM CLOCKS . BOWL FIRES COFFEE PERCOLATORS F IR E S , i, 2 and 3 kW HEAT-CONTROLLED IRONS HAIR DRYERS • FLUORESCENT LAMPS • RADIO RECEIVERS TOASTERS • TOWEL RAILS VACUUM CLEANERS and many other proprietary lines From Stock . . . Send stamped envelope for new, interesting comprehensive lists of post - war supplies Purely Electrical and Radio

FACTORS' ORDERS SOLICITED MARCUS FISHER & CO. LTD. I t M I T MANUFACTURERS & FACTORS FLEMING ROAD, SPEKE 37 Aylmer Parade, LONDON, N.2 L IV E R P O O L , 19 Telephone : Telegrams : ______Phone : Hunt’s Cross 1217/8 MOUntview 2461/2 “ London, Mountview 2461 ” LONDON OFFICE : ABFORD HOUSE, WILTON RD„ 8.W t Telephone : VICTORIA 5957¡8 1 6 E l e c t r i c a l R e v ie w Decem ber 27, 1946

Index to Advertisers ( Continued from page 74) page Internationa! Electrolytic Plant Co Ltd- 24 loco L td...... 10 EARTHING C L IP S WITH Itonia Battery Co. Ltd ...... 73 Jeary Electrical Co. Ltd ...... 104 SP ECIA L B ITE AND GRIP Johnson & Phillips Ltd ...... 23 INTO TUBE OR ARMOURING Joyce Engineering Ltd...... 90 I Note the tongue which Kango Electric Hammers Ltd ...... 53 | ensures perfect and Kerry’s (Great Britain) Ltd ...... 22 Key Engineering Co. Ltd ...... 14 ermanent contact, Kirolite (Sales) Ltd...... 98 asy to fix. Nuts Legg (Industries) Ltd ...... 79 cannot turn. All sizes Ley’s Malleable Castings Co. Ltd ...... 35 fromg half to two inches. Litholite Insulators & St. Albans Mouldings Ltd 73 THE Londex L td...... 112 DONOVAN ELECTRICAL CO. London Electric Wire Co. & Smiths Ltd ...... 85 London Electrical Co. (Blackfriars) Ltd Cover ii BIRM IN G H A M 9. LTD. London Transformer Products Ltd ...... 90 M acrome L td ...... 26 McGeoch, William, & Co. Ltd ...... 73 McKechnie Bros. Ltd...... 48 M.C.L. & Repetition Ltd ...... 1 Measuring Instruments (Pullin) Ltd ...... 48 Mercury Switch Manufacturing Co. Ltd...... 30 Mersey Cable Works Ltd ...... 109 Metallic Seamless Tube Co. Ltd ...... 12 SPRAY PAINT M etropolitan-Vickers Electrical Co. L td ...... 52 & 95 Midland Dynamo Co. Ltd ...... 92 COMBINATION Midland Electric Manufacturing Co. Ltd ...... 51 Mitchell Electric Ltd...... 84 Mole, M., & Son Ltd...... Cover iii Moulded Products Ltd...... 24 Comprises essential equip­ Nalder Bros. & Thompson Ltd ...... 15 ment for continuous spray National Fire Protection Co. Ltd ...... 102 painting, including Spray O’Connor Electrical Industries Ltd ...... 32 Gun, Pressure Paint Con­ Ormond Engineering Co. Ltd ...... 28 tainer, Hose and connections. Overseas Engineering Co. Ltd ...... 80 Write for Catalogue C.B.36. Parmiter, Hope & Sugden Ltd...... 77 Partridge Wilson, E., & Co. Ltd ...... 105 B.E.N. PATENTS LTD. Peaty, L. F., & Co. Ltd ...... 104 HIGH WYCOMBE, BUCKS Philips Lamps Ltd ...... 97 Poles L td ...... 73 Power Equipment Co. Ltd ...... 43 Prat-Daniel (Stanmore) Ltd ...... 26 Pyrotenax Ltd...... 89 Ratcliff, J. F., (Metals) Ltd ...... 108 Revo Electric Co. Ltd ...... 83 LET HELP Reyrolle, A., & Co. Ltd ...... 25 w l Robinson, Lionel, & Co. Ltd ...... 41 ESTOO Robson Electrical Products Ltd ...... 81 WITH YOUR POST-WAR PROBLEMS ON ALL Ross Courtney & Co. Ltd ...... 1 Rotunda Ltd ...... 82 Electro-Mechanical Apparatus Rubber Bonders Ltd ...... 34 Runbaken Electrical Products...... 112 Scholes, George H., & Co. Ltd ...... 22 Solenoids and Electro-Magnets Simmonds Aerocessories Ltd...... 57 Simmonds & Stokes Ltd ...... 10 FOR TECHNICAL ADVICE, WRITE Smiths Industrial Instruments Ltd ...... 74 South Wales Switchgear Ltd ...... 79 WESTOOL Ltd. Telephone Sparklets Ltd ...... 14 ST HELENS AUCKLAND Speed Tools Ltd ...... 108 BISHOP AUCKLAND J| WEST AUCKLAND Sperryn & Co ...... 71 Co. durhah' 317 Spicers Ltd Cover iii Spiral Tube & Components Co. Ltd ...... 106 Standard Telephones & Cables Ltd ...... 18 Stanton & Co ...... •...... 76 Symonds, R. H., Ltd ...... 32 Synchronome Co. Ltd ...... 104 Telephone Manufacturing Co. Ltd ...... 92 PAT. Thorn Electrical Industries Ltd ...... 107 Torm o L td ...... 32 Transformer & Electrical Co. Ltd ...... 72 Tudor Accumulator Co. Ltd ...... 84 First Grade Turner Brothers Asbestos Company Ltd ...... 49 Vacuum Cleaners & Electrical Supplies L td ...... 72 PLASTIC Veritys Ltd ...... 55 Viscose Development Co. Ltd ...... 39 Walker, Crosweller & Co. Ltd ...... 104 PLUGS Walsall Conduits Ltd ...... 27 NO CABLE CLAMPS OR Walters, Austin, & Son Ltd ...... 98 SCREWS Ward & Goldstone Ltd ...... 81 EXTRA SAFE EARTH Webber, J. M., & Co. Ltd...... 72 Westerman, Frank, (Wholesale) Ltd ...... 22 SELF-ALIGNING PINS Westinghouse Brake & Signal Co. Ltd ...... 88 Westminster Engineering Co. Ltd ...... 1 Westool Ltd ...... 76 Wilcox, Edward, & Co. Ltd ...... I l l D e c e m b e r 27, 1946 l e c t r i c a l e v ie w E R (.S u p p l e m e n t ) 77

INSIDE STORY As with most things that are sound in practice and reliable in action, the construction of the Aeroflex Standard Type Fuse is essentially simple. It has a definite time-lag and a close and accurate rating which remains constant under all conditions; and is capable of carrying its full load current indefinitely without deterioration. Asbestos Special Bi-Metal Thermal Drawn Wool Filling Control and Patent Copper Packing Powder Subsidence Chamber Contacts

You are invited to write for a copy of our publication “ Aeroflex Fuses ” which gives full technical details. pQR A L [_ SITUATIONS

PARM1TER HOPE & SUGDEN LTD Fluvent Electrical Works LONGSIGHT MANCHESTER 12 dm PH.4 CONDENSING PLANT Surface and Jet Types and all AUXILIARY EQUIPMENT from Turbine Flange to Boiler Check Valves The illustration shows a Hick Hargreaves Low Level jet type Condensing Plant with " Hivac ” Ejector and split casing Extrac­ tion Pump working in conjunction with a 5,000 kW. Turbo- Alternator.

1 1 h im ii com» a« t U H im H H i Grams : BOLTON ‘ Hick. Bolton ” AD 48C 78 {Supplement) E l e c t r i c a l R e v i e w December 27, 1946

The in-built quality of C R O Y D O N to leading Corporations. motors developed and perfected Beacon Globes ■ Safety Posts • Road Signs Street Nameplates • Route Direction Signs through years of experience in Posts and Lighting Columns. GOWSHALL LTD., Lamb’s Conduit Passage, the F.H.P. motor market is your Red Lion Square, W.C.I. (Chancery 7042/7845) guarantee of satisfaction when you St. Paul’s Street, Walsall. (Walsall 4867 8). specify C R O Y D O N motors. As specialists in the design and application of high grade F.H.P. motors to specific needs, we invite you to send us your motor problem. Range of Electric Motors includes GOVERNED MOTORS (fixed and variable speed) INTERLOCK, MASTER & CAMERA MOTORS SYNCHRONOUS MOTORS (for A.C. only) GEARED MOTORS (for A.C. or D.C.) ♦SHADED POLE & AIRCRAFT MOTORS MOTOR ALTERNATOR SETS MOTOR GENERATOR SETS ROTARY CONVERTORS *A strictly limited number of Shaded Pole Motors can be supplied from stock

Made by THE LONDON PLATINUM SCREW Mfg. Co.,ltd.

C R O Y D O N E N G IN E E R IN G CO. LTD. COMMERCE WAY, PURLEY WAY, CROYDON Phone : Croydon 4125-8 Pitchfordt December 27, 1946 E l e c t r i c a l R e v ie w (Supplem ent) 79

Indoor. . . Outdoor... and Pole Mounting Transformers

A COMPLETE RANGE OF POWER TRANSFORMERS UP TO II KV— 1,000 KVA.

The illustration shows the tanking of the core and coils of a 300 KVA transformer for use in a S.W.S. Kiosk

SOUTH WALES SWITCHGEAR LTD - TREFOREST • GLAM (POWER TRANSFORMER DIVISION)

BATTERY CHARGERS RECTIFIER UNITS TRANSFORMERS ETC.

»

AIL f«««TAU «ECTI»l£f!« 6B

o u r BRITISH THROUGHOUT LECG(iNDurnuES) LTD, IS ALWAYS AVAILABLE TO WILLIAMSON STREET, EVERYLEGG'EQUIPMENTUSER/ WOLVERHAMPTON. (ON REQUEST) P H O N E ’. 2 4 0 9 1 / 2 ( t l i a i t ) 8 0 ( Supplement) Electrical Review Decem ber 27, 1946

^ a e r o f i e r heats the whole room - not just one spot

With the AEROFIER Portable Space Heater all the room— floor to ceiling, wall to wall — gets evenly heated at once. Consisting of 2-kilowatt eleinent and distributing fan, compactly built in, AEROFIER circulates warm air in winter, cooling air in summer—eliminating stuffiness. Of attractive design and colour choice, AEROFIER looks well in any part of room or business premises. Robustly constructed. Thorough in­ sulation makes it burn-proof, scorch-proof. Here is a heater of unique sales appeal. Retails at £io . io Full details and Trade terms from sole concessionnaires: C. J. FOX 4 SONS LTD., 117 VICTORIA ST., LONDON S.W .I Telephone: Victoria 0204

A E R O F I E R DISTRIBUTOR

We Specialise in “CONTINENTAL TYPE” Accessories

1 J Lqt us ^ §§ quote you ¿ r for these items, as well as for Con duit tubing, Cables and Insulators Lampholders in Bakelite and Brass

T H E OVERSEAS ENGINEERING CO. LTJ>. K\( Cables: HYCAHYN 200 BISHOPSGATE, LONDON, E.C.2 Phone : BISHOPSGATE 9878 (3Jines December 27, 1946 E l e c t r i c a l R e v ie w ( Supplement) 81

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

WARD&GOLDSTONE Ltd. P e n d l e t o n , M a n c h e s t e r . 6 . ESTABLISHED OVER HALF A CSNTUBY

T lb e TDUtralite IDe^Xuye Jron rd^vec-iaY/y fit Q)cô-c-'lf'yn trt.ctÔcyny.-

• Sturdy * Bakelite Construction Mouldings

• Choice o f • Steatite Three Colours Insulation

Precision • Nickel on Copper Ground Plating Sole

^ Retail Price 2 5 / - C om plete

IRobson Electrical flirobticts Xtb. UNION STREET, WEST BROMWICH 82 ( S u p p l e m e n t ) E l e c t r i c a l R e v ie w D e c e m b e r 27, 1946

tlti& k Jew eU

W h y be content with instruments w hich have reduced accuracy, reduced life and need tapping ? A few pence extra ensures the best possible bearings, namely :— SAPPHIRE. No Need to Use Substitutes Now — Delivery of the Real Thing from Stock.

BRITISH JEWEL MANUFACTURING C° LTD A D E L P H I STREET SALFORD • 3 Telephone : BLA 5040 Telegroms : ‘ BRITJUEL, MANCHESTER ’

SLIPKNOTRegd. Your Guarantee of Complete Dependability in ELECTRICAL INSULATING TAPES SLIPKNOT RUBBER SLIPKNOT PITCH AND SPLICING COMPOUND TAPE BITUMEN TAPE SLIPKNOTPURE RUBBER SLIPKNOT BLACK STRIP (UNVULCANISED) ADHESIVE INSULATINGTAPE

FROM ALL ELECTRICAL WHOLESALERS AND FACTORS

Manufactured RQTUNDA LIMITED --HESTER ■ wiiirf-i ENGLAND PTON, STAFFS 84 ( Supplement) E l e c t r i c a l R e v ie w Decem ber 27, 1946 T k sh ill Ik a B ig Dem a n d THC NEWMITC-HCLL CRESCCNT ELECTRIC WATER HEATER/ Eut ali orders will be executed in strict rotation This fiSf post-war model of the Crescent Water Heater is the result of over thirty years experience and experi­ ment. and embodies the latest technique in electrical development. Specially designed features include Robust element for long life and efficiency Water Container scientifically plated inside giving absolute purity Easily adjusted thermostatic control Chromium plated fittings throughout > High grade finish in cream or white enamel There’s a ONE-YEAR guarantee with every model DON’T BE LAST ON THE DELIVERY LIST MITC-HCLL MECO WORKS, 88-90 TENNANT ST., BIRMINGHAM 15 Phone: Mid. 3096. Grams: ‘‘Wizard. B’hrm”

V uistect tA ose,

The engineers responsible for equip­ have been functioning without pause ping 500 of Britain’s Power Stations or hitch for over 30 years. You should pinned their faith to Tudor Accumu­ specify Tudor for important jobs. lators. This confidence was justified S afetyi YTE is the Tudor Emer ■ by the Tudor record of unsurpassed g e n cy Light ng System, which is automatic and instantaneous efficiency and reliability. Many of in operation. It is installed in thousands of schools, hospitals, the largest battery installations in the facUtries and other large b u ild in g s. country are Tudor, and some o f these

The Tudor Accumulator Co., Ltd., Ml U LAT© RS 5°» G rosvenor Gardens.. London, S.W .i. SLOane: 0168 9

WT 3 5 b 44 ( December 27, 1946 Electrical Review (Supplement) 85

E.W.3636 ...

and you w ill be put through to LEY 3636, the Leyton Works of the London Electric Wire Company and Smiths Limited, the centre of supply and ser­ vice for all types of insulated winding wires and strips. The Standard of quality maintained requires no emphasis.

THE LONDON ELECTRIC WIRE COMPANY AND SMITHS LIMITED CHURCH ROAD • LEYTON • LONDON • EIO

-y ' ______-______—. 8 6 ( Supplem ent) E l e c t r i c a l R e v ie w D ecem ber 27, 1946

ONE HORSE OR TWO THOUSAND HORSE POWER ?

Flour Millers, Power Stations, Poultry Breeders , Dairy These two illustrations reflect Farmers, Technical the diverse uses of B.V.C. Colleges, Cinemas, Vacuum Cleaners in industry and Transport Under­ today. Y O U R industry may takings are among have a problem remote from those receiving these two examples, which, satisfactory service however, can be solved by our from B.V.C. Systems experts. Get in touch with is « » - « » B.V.C. Our long experience on these problems is at yourservice THE BRITISH VACUUM CLEANER & ENGI NEERING CO. LTD. (Dept. 4/H) LEATHERHEAD, Surrey. Phone : Ashtead 866 D e c e m b e r 27, 1946 E l e c t r i c a l R ev iev ( Supplement) 87

It went with the wind

Wh

Yet even in these times of electrical power, continuous production from every section of the factory plant is still to be achieved. By pioneering improved designs in vital electrical plant— in motors, transformers, switchgear and cables, Crompton Parkinson Ltd. have done a great deal to eliminate the windless hours from modern production. Their pioneering continues—and will continue—setting new standards—responding to new needs and always leading—always a little ahead of their time. rompton® Parkinson C• ■ ■ MMITIB 5 " lU ,.1 «««•»»"* PLANT DIVISION • SWTt,Gt , f[, obies .»» ElECTRA HOUSE. VICTORIA EMBANKMENT I 0 N 0 0 N . W. C . 2 88 ( Supplement) E l e c t r i c a l R e v ie w D ecem ber 2 7, 1946

T h e P i k e .

The pike has a deserved reputation for ferocity and exercises complete control over the secluded waters it selects for its home. Manv o f over 40 lbs. in weight have been taken in our lakes and rivers and it is credited with a potential life o f 200 years. Certainly, it is one o f the longest-lived fresh­ water fish in the British Isles.

The Westinghouse metal rectifier cannot yet claim such a long life, but many are still in constant use after 20 years’ continuous service. WESTINGHOUSE METAL RECTIFIERS WESTINGHOUSE BRAKE & SIGNAL CO. LTD. December 27, 1946 E l e c t r i c a l R e v ie w ( Supplement) 89

t e t t * .B e i n g made entirely of copper and a mineral insulant “ Pyrotenax ” M.I.C.C. cables are, for all practical purposes, indestructible and everlasting. Once installed they require no maintenance or renewal. The illustration shows the Installation too, is simple ; any form of saddle or '* Pyrotenax ” installation of Control Cables in the clamping device, widely spaced, holds them in position. tunnel to the Switch House Their tough copper sheath keeps their mineral insulant at the I.C.I. Metals Ltd., Kynoch Works. Note that intact, even when subjected to the grossest ill-usage. no conduits are used. By the same token they cannot be damaged by oil, water or condensation .... and being inorganic they are inherently fire resistant.

“ P y ro te n a x ” is a n exclusive trade mark name and must only be used to designate cables and other products manufactured by this com pany and its associates.

PYROTENAX LIMITED, HEBBURN, CO. DURHAM. Phone : Hebburn 32244/5 LONDON OFFICE: 7 Victoria Street, S.W.i. Telephone: Abbey 1654 BIRMINGHAM OFFICE : 2 Moor Street. Telephone : Midland 1265

G.D.28 9 0 ( Supplement) E l e c t r i c a l R e v ie w Decem ber 27, 1946

M A D E B Y : AERIALITE CASTLE WORKS *STALYBRIDG£* CHESHIRE. ENG:

L.T.P. “ BRITAIN GAN MAKE I T ” FOR

W E ’VE BEEN TRANSFORMERS M A K IN G IT W E ARE CHOKES, MERCURY M A K IN G IT W E S H A L L ARC RECTIFIERS M AKE IT

Write for latest Technical Brochure MANUFACTURING, to MECHANICAL AND LONDON TRANSFORMER ELECTRICAL ENGINEERS PRODUCTS LTD.

COBBOLD ESTATE, WILLESDEN JOYCE ENGINEERING LTD. LONDON, N.W.IO TH E QUADRANT, N.W.4 W il 6486 HENDON 7437-8-9 December 27, 1946 Electrical R e v i e w {Supplem ent) 91

electrical WIRING ACCESSORIES

N ETTLE Shockproof Electrical Accessories are designed for safety and for easy wiring.

They are of exceptionally robust construction.

The comprehensive range of domestic and industrial types includes : Switches, Lamp- holders, Bell T ransfor m'e r s , Sockets and Plugs, Ceiling Roses, Hand Lamps, etc.

VICTOR H fc WYTHENSH

9 2 ( Supplement) E l e c t r i c a l R e v ie w December 27, 1946

aim© NIGHT ELECTRIC SERVICE

For

Quick Reliable Repairs

and Rewinds

THE MIDLAND DYNAMO CO. LTD.

LEICESTER Phone 20172 (3 lines)

FREQUENCY CONVERTER

The Syncycle provides low frequency current at one-third mains supply frequency— e.g., 16 § c/s or 20 c/s for such purposes as signalling, alarm systems, laboratory use, etc. It is particularly suitable as a source of ringing current for telephone exchanges. The Syncycle is compact and easily installed. It has no moving parts, thermionic valves, electro­ lytic capacitors or any other components liable to require maintenance. It is automatically protected against overloads. “ 5 watt” series lor W all, Batten or Rack mounting: In p u t : O utp ut : from 90v. to 2 6ov. A.C. from 45v. to 90V. A .C. ot $ e? ; ” 20 watt” series for W all or Batten mounting: (COTA Input : Output : from 200V. to 250V. A .C . from 20V. to gov. A.C. Fully Tropical models for wall mounting are available. y h c v c 1 Write lor full details to the Sole Manufacturers and Patentees:

'' TELEPHONE MANUFACTURING CO. LTD. 9. HOLLINGSWORTH WORKS, DULWICH, LONDON, S.E.21 t r a d e . 1/1 Telephone: GIPsy Hill 2211 ( 10 lines) Electrical Review (Supplem ent) 93

‘WËLVIC pvc com positions

polyvinyl chloride

'ÂLKÂTHENE' p o l y t h e n e

f o r e l e c t r i c a l

a p p l ¡cations D e c e m b e r 27, 1946 94 (Supplement) E l e c t r i c a l R e v i e w

The G.l. “ STROBO-VISOR ” A SMALL PORTABLE STROBOSCOPE OF HIGH ACCURACY Manufactured by : GRASEBY INSTRUMENTS LTD

KINGSTON BY-PASS ROAD HOOK RISE, TOLWORTH Telephone : ELMBRIDGE 5742

J

Electric and Steam Cooking Appliances. Specialist plan­ ning of large kitchens for

consulting engineers and Example of single-deck " Stream­ lined ” enamel-finished electric architects. Makers of “ Her­ pastry oven. Size inside—36 ins. wide X 30 ins. x 9 ins. cules ” precision made heavy duty dishwashing machines. Heating, ventilating and BENHAM & SONS LTD. 4 air-conditioning engineering. 66 Wigmore Street, LONDON, W.l

BRIGHTON BOURNEMOUTH • BIRMINGHAM MANCHESTER CARDIFF • GLASGOW December 27, 1946 E l e c t r i c a l R e v i e w

------METROPOLITAN-VICKERS" " „ „ c cTTrPICALELECTRICA,- CO LTD..______NUMBER ONE. KINGSWAY, LONDON, W.C.2 ------S/A6U 96 (Supplement) E l e c t r i c a l R e v ie w December 2 7, 1946

r a r l e c t a FLUORESCENT FITTINGS

For 5-foot Tubes LIST N O . FD 101 £7.19.6 Subject (No advance)

ft A K t £ C T A

For 5-foot Tubes LIST N O . FD 106 £6.19.6 Subject (No advance) PROMPT DELIVERY Other types in course of preparation PRICES INCLUDE: • RADIO SUPPRESSOR BARRIES • C H O K 6 • CONDENSER ELECTRICAL AGENCIES LIMITED • STARTER SWITCH KING STREET • BRIGHTON 1 • SUSSEX NO EXTRAS Phone: Brighton 4456 Crams : " Barlecta, Phone. Brighton ” crduotLet IRL, to duct IS a m p . MULTIPLUG b a LDWïn Lots for the shops now ‘M UFER’ CAPACITY BRIDGE This instrument which has a range of o-oooo5piF. to 4’0/tF.j embodies advanced features of design which give quick and simplified reading.

Fully descriptive The 15 amp. Multiplug has a patented feature. Three screw-in pins enable it to function as either a 3-pin or a leaflet supplied 2-pin multiplug. The sockets take one 15 amp. 2-pin or on request 3-pin plug, and two 5 amp. 2-pin plugs. In brown or black, list price 5/-. 5 amp. Multiplug also available, list price 4/6. BALDWIN INSTRUMENT COMPANY LTD. I ntv l& ah? MiundeJ. London Office : GRAND BUILDINGS • TRAFALGAR SQUARE • LONDON, W.C .2 WHOLESALE and EXPORT ONLY Telephone : WHItehall 3736 37b, New Cavendish Street, London, W.l ''IIP* Telephone: WELPeck 9356 and 3 6 4 1 December 27, 1946 E l e c t r i c a l R rvinvv {Supplement) 97 WHAT IS INSIDE ?

W h a t ’s inside a Philips Lamp?

The answer is: “ Over half a century’s experience” . The fruit of this experience is a lamp that gives a maximum of clear, bright light for a minimum of current. S e l l PHILIPS '¿atm u m - the Lamps the Public like 0Makers of Good Lamps for over 50 Years

PHIulPS LAMPS LIMITED. CENTURY HOUSE. SHAFTESBURY AVENU E. W .C . 2. (i6t) 98 {Supplement) E lectrical Review December 17 ,1 9 4 6 AUSTIN WAITERS & SON L» MANUFACTURERS OF STORAGE EQUIPMENT

Bins and Shelving single and double-sided

ELECTRIC LIGHTING FITTINGS STORAGE Pendants, W all Brackets, Table Standards, etc. RACKS In W o o d and W ro u g h t Iron of for Distinctive Designs small parts KIROLITE (SALES) LTD. Removable Trays 15 Bury St., London, E.C.3. T el.: Avenue 1443

TOOL CABIN ETS 39" x 18' x 15" ¡Lock and Key

Specialists In the moulding of Poly­ styrene, Polythene and Cellulose Acetate as applied to the Electrical Industry. W e shall be very pleased to forward any information requested. INJECTION STEEL WORK BENCHES MOULDERS 8 0" X 2 6" X 2' 8' Two Lockers with Padlock and Key oOld. (Bureau I)

Westmoreland Road, London, N.W.9 Telephone : COLindale 8868/9 AUSTIN WALTERS & SON LTD. Old Trafford, MANCHESTER 16 December 27, 1946 l e c t r i c a l e v ie w E R (Supplement) 99

TUMBLER SWITCHES ARROW QUICK MAKE AND BREAK

30 amp. Double Pole 60 amp. Double Pole a

& nsure the reliability of your products by the selection of a switch of PRO VEN efficiency. There is built into A R R O W switches something you’ll not find elsewhere a more scientific design . . . a more positive action . . . greater accuracy in detail and increased durability under severe operating conditions. /

IRROW ELECTRIC SWITCHES LIMITED HANGER LANE, LONDON, W.5 100 (Supplement) E l e c t r i c a l R e v ie w December 27, 1946

W lm m um protection for th e ^u krku tiru jf S ystem ,

Ü fully ehóured by

THE d epen d ab le

OIL Punil'll««

Centrifugal separation is the only practical method of purification for turbine oils. Outstanding features of De Laval centrifugal equipment are the reduction of moisture content to a negligible minimum, and constant high efficiency independent of the quantity of solid matter in the centrifuge bowl. Illustration of Littlebrook Power Station is reproduced by permission of the Kent Electric Power Co. ALFA-LAVAL CO. LTD., GREAT WEST ROAD, BRENTFORD, MIDDLESEX. Ealing 0116 P.B.X

Smee's DL ¿ AGRO ELECTRICA] C O . LTD Electrical Apparatus and Accessories Manufacturers ■ v!

London Office: 7 MADDOX ST. REGENT ST. • Tel: MAYfair 4068-9 • Works: Aylesbury, Buc December 21, 1946 Electrical Review (Supplement) 101

I n th e p r o d u c t o f the Specialist there are details of design that distinguish it from its contemporaries.

Lö-Vö-Lite COMPLETELY SELF-ISOLATING TRANSFORMER TRANSFORMER

SWITCH-FUSE V A C U U M IMPREGNATED UNIT © TRANSFORMER GIVING HIGH PRIMARY TO SECONDARY FOR SAFE & ECONOMICAL INSULATION DOUBLE POLE LOCALISED LIGHTING FUSES © (AND SPARES) FOR BOTH WINDINGS

SECONDARY FUSE H O LD ER O F © LOW RESISTANCE CONTACTS ENSURING LOW VOLTAGE DROP ON SECONDARY

RECESSED SWITCH PREV EN TS SHOP BREAKAGES

UNIVERSAL BASE FOR EITHER © MACHINE, BENCH OR TRANSFORMER MOUNTING

\ Æ m ^ \ H i

FOR PUBLICATION 68610)

BRISTOL • CARDIFF • GLASGOW • LEEDS • MANCHESTER • NEWCASTLE • SHEFFIELD 102 ( S u p p l e m e n t ) E l e c t r i c a l R e v ie w D e c e m b e r 27, 1946

Do you know when fire will breakout in your premises? I

Be prepared against such a possibility. Install “ National ” the most efficient fire fighting equipment on the market and take advantage of our maintenance service to ensure you are always ready to combat the danger wherever and whenever it threatens.

WRITE FOR ADVICE THE ON YOUR OWN PARTICULAR RISKS NATIONAL FIRE PROTECTION COMPANY LIMITED, ARGOSY WORKS, KINGSTON ROAD, LEATHERHEAD, SURREY. Telephone: LEATHERHEAD 2208.

\ December 27, 1946 E l e c t r i c a l R e v ie w 0Supplement) 103

E l l i s o n STARTERS FOR SQUIRREL-CAGE MOTORS..,

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

BIRMINGHAM 22 B 104 (Supplement) E l e c t r i c a l R e v ie w Decem ber 27, 1946

THE ÄtASTKH,

Yet another Idea of our modern The Synchronome Sys­ and attractive designs, chosen tem consists of an from a wide range of household Etectrical Impulse electrical fittings, the Standard Master Clock operating Lamp as illustrated is finished In any number of sub­ cream, the centre tier of the sidiary dials and time base is a different colour. recorders throughout a Strongly made, yet light in factory or business pre­ weight .... beautiful pastel mises, simultaneously shades that will tone with any interior decoration .... made showing accurate time. of light metal—such is Duracraft, The Master is the the new metalcraft that is fast SYNCHRONOME becoming popular throughout CONTROLLING PEN­ the Electrical Trade. DULUM . It is independent Increase your sales by displaying of the Mains Supply, and Duracraft Electrical Accessories based on the Free Pendulum — they are real sellers. installed by the Synchronome Co. at Greenwich Observatory which may be said to measure the time of the World. The Synchronome System is used by hundreds of Manufacturers, Insurance Offices, Public Institutions, etc., throughout the World, and may be rented or purchased outright. durtkCftkjł Write fo r further information and technical details. ELECTRIC FITTINGS é SY.VCHIU».V O łJ Sole Designers and Manufacturers ® C o 1 T O L. F. PEATY & CO. LTD. m ir E1ECTBIC CIOCI WORKS — MOUBI PUAS ART - ALPEBTOI GOOMBE BRIDGE. KINGSTON B Y-P A SS, LONDON. S.W .20 T tltP H O M ’. W E . I U T 1. 4X

THE JEARY ELECTRICAL C O . L T D . Successors to G. Braulik (Established 1887) 5 Lamb’s Buildings, Bunhill Row

THE LONDON, E.C.I Everything Electrical

FLOW ■N othing Else Distributors of.. INDICATOR G.E.C. M.K. is a device for inserting in a pipe M.E.M. ASHLEY line to show at a glance the flow REVO BOWKER in the circuit. The liquid spins B.T.H. E.D.L. a chromium-plated ring under a SIEMENS G.A.C. glass dome. If the flows tops, EDISWAN etc. the ring stops. Approved by the Admiralty. W e would welcome contact with any Please write for Pamphlet quoting ref. 116/1742 Manufacturers of repute making specialities A lo n g term policy is desired and immediate delivery ft not essential WALKER , CROSWELLER E- CO.,l t d - CHELTENHAM GLOS. Area covered — London, Home and Southern Counties SI.1742 December 27, 1946 E l e c t r i c a l R e v ie w (Supplement) 105

Jfan jUanufatturerô’ Höäoriatton

A Technical Group formed by the leading THIS ASSOCIATION SHOULD NOT firms in the Fan Engineering Industry for BE CONFUSED WITH ANY OTHER the purpose of advancing and spreading FAN ASSOCIATION knowledge in Fan Technology

FOUNDER MEMBERS : Its individual members are manufacturers ALLDAYS & ONIONS LTD., Great Western Works, Birmingham 11 and specialists In all branches of Fan DAVIDSON & CO. LTD., Sirocco Engineering Engineering, such as : Works. Belfast JAMES HOWDEN & CO. LTD., 195 Scotland Street. Glasgow, C.5 AIR CONDITIONING • HEATING KEITH BLACKMAN LTD.. Mill Mead Road, Totten­ AND VENTILATING • DUST ham, N. 17 MATTHEWS & YATES LTD., Swinton, Manchester EXTRACTION AND COLLECTION MUSGRAVE & CO. LTD., St. Ann’s Ironworks, Belfast DRYING • FORCED AND INDUCED STANDARD & POCHIN BROS. LTD., Evington Valley Road, Leicester DRAUGHT • FUME REMOVAL • STURTEVANT ENGINEERING CO. LTD.. 25 Worcester Road, Sutton, Surrey PNEUMATIC CONVEYING . BLAST THERMOTANK LTD., Govan, Glasgow FOR FURNACES • MINE VENTILATING WALKER BROS. (WIGAN) LTD., Pagef.eld Iron­ works, Wigan -AND WHEREVER FANS ARE USED

FAN MANUFACTURERS’ ASSOCIATION LTD., 23 QUEEN SQUARE, LONDON, W.C.1

Designed from first - to last !

^AVENSET Battery Chargers have been designed from the first, to give long and efficient service 0 AMPLE VENTILATION IN CASE DESIGN in continuous duty. The extensive range of Standard Models covers almost every battery charging applica­ 0 ROBUST ALL STEEL CONSTRUCTION tion. The Model ‘A’ illustrated is an example of a general purpose charger with three circuits giving 0 SELENIUM RECTIFIER UNITS TO EACH CIRCUIT outputs of I amp., 2 amps, and 6 amps, respectively, 0 IMMEDIATE DELIVERY FROM STOCK ! for use with radio, or car starter batteries, etc. W rite for full particulars of this, and other models. . i W r à I P P v BATTERY CHARGERS 9 / w h N b E ' ^ ■|)arfrtàqi>IlliU otj I to. DAVENSET ELECTRICAL WORKS • LEICESTER. 106 (Supplement) Electrical R e v ie w December 2 7 , 1 9 4 6 R.M.R.11 TUBULAR REFLECTOR FIRE with suitable length of 3 core flex. Polished aluminium reflector reinforced with strong alloy on each side and fixed on anodised tubular frame. The guard over the element is also made from anodised alloy. W h o le construction superior and novel. 18" x 16" x I5£". I kW'2 kW, 230 250 v, unless otherwise stated. Deliveries excellent but in strict rotation Large Range of Portable and W all Electric Fires, Radiators, Convector Heaters, Oak Floor Standard and Table Lamps, Fluorescent Lighting Fittings, Electric Irons, Vacuum Cleaners, Novelty Bowl Fires, Boiling Rings, Electric Kettles, Electric Fans, Torch Cases. Cycle Lamps, all types of Batteries ("A ” Class), etc. Detailed List available Place orders In good time BROOKS & BOHM LTD. 40/- Retail From on VICTORIA STREET. LONDON, S.W.I. Phone : Victoria 9550 & 1441 Generous Trade discounts

'S Ś a Ó U c . PUMPS FOR WELLS & He is the man who has to use the tools you provide and he knows their merits. There is a Flextol machine for every job, — Filing, BOREHOLES OF Grinding, Scurfing, Polishing, Flexible Disc Grinding, Screw Driving, Nut Setting, etc. EVERY DEPTH Send for Catalogue No. F 22. T Y P E E.O .E. for Well* and Boreholes exceeding 25 ft. In depth. Totally enclosed self-oiling mechanism of Patented design. Precision workmanship throughout. Pump can be supplied complete with J h.p. Electric Motor or with fast and loose pulleys for belt drive. Capacities from 58 gallons per hour.

We invite Agents to write for POWER-DRIVEN HAND TOOLS illustrated literature, prices and ifga Trod» tdO't discounts. K H. J. GODWIN L” 1 M o re Pow er t o your elbow ’ QUENINGTON, GLOS. Sole Manufacturers and Patentees : FLEXTOL ENGINEERING CO. LTD THE GREEN. EALING. LONDON, W.S ’Phones: EALing 6444/5/6. ’Grams: •• Dominating ” , Ealux, London.

e f f i c ie n c y

The Spiral Tube and Components Co. Ltd. Technical Department OSMASTON PARK ROAD, DERBY Head Office - Honeypot Lane, Stanmore, Middlesex '-'»hones - Derby 46067-8 Edgware 46b8-9 SplralDerby46067;Splratucom Phone London Decem ber 27, 1946 E l e c t r i c a l R e v ie w (Supplement) 107

NEXT TIME HE'LL CET AN ATLAS Men and women who buy lamps remember the Atlas message because it strikes the right note. That moment of baffled exasperation when a lamp fails—that is the moment when the public is really lamp conscious. At that moment they remember the Atlas message . . . it is always in the right place . . . at the right time . . . in the leading newspapers and magazines . . . on the best poster sites . . . in the best dealers windows. Atlas offer the dealer generous rebates and discounts—without any restrictions. Sales aids include attractive display material and a compre­ hensive window-dressing service. Give y o u r lamp sales ppw staying power! Write fo r Atlas terms today. ATLAS LAMPS | | FOR STAYING POWER EXPORT ENQUIRIES WELCOMED Thorn Electrical Industries Ltd., 105-109 Judd Street, London, W.C.1. Phone: EUSton 1183 Northern Branch : Stevenson Square, Manchester I. Phone : Central 3I8S N. E. Depot : 46 Sandhill, Newcastle-on-Tyne I. Phone : Newcastle 24068 108 (Supplement) E l e c t r i c a l R e v ie w December 27, 1946

To ensure economic output, work loading and fixing times must be cut to the minimum in all production operations, but at the same time accuracy and efficiency must be main­ tained. Much depends on the design of jigs and fixtures and most designers now regularly specify “ Speetogs” wherever instantaneous clamping and release of the job is required.

As standard units for immediate incorporation into jigs and fixtures “ Speetogs” are unequalled and for years now we have regularly supplied them from stock. There is a “ SPEETOG ” Clamp for every purpose. Write for details of our ever growing range

IT WILL PAY YOU TO CONSULT Ensel Electric LTD THE ClAMPING S p e e d 7 é v fs ¿ f 314, GRA YS INN R? LONDON,W.C.I ' “CIALISTS VfRfKER BUILDINGS GRFSSE ST 10ND0N Wi MUwl019T0«9 TELEPHONE TERMINUS 6255/7 December 27, 1946 E l e c t r i c a l R e v ie w (Supplement) 109 from

SMALL to LARGE

At Mersey Cable Works, wires, cables and flexibles, insulated with rubber, are made in all sizes for all purposes. Types include: Single, Twin and Multicore, Lead-covered, Armoured, Trailing, W elding, Mining, Varnished Cambric Insulated and H.S.O.S.

MERSEY CABLES meet ALL requirements

MERSEY CABLE WORKS LIMITED. LiNACRE LANE, BOOTLE. LIVERPOOL. BOOTLE 2777-8-9 110 (Supplement) E l e c t r i c a l R e v ie w Decem ber 27, 1946 ......

HEAVY OR LIGHT

frames and cases are all Just

sheet metal fabricated to

the customer’s requirements

From customers’ specifications Air Ducts will make to order: feeder pillars, telephone boxes and cubicles, busbar chambers, connection boxes, instrument panels, and frames arid cases of every description. They work In all sheet metals, including steel, duralumin, aluminium and other non-ferrous metals. LIMITED

Great W est Road, Brentford. Telephone : Ealing 6655. Telegraphic Address : " Airdux, Brentford ”} SMALL GEARED MOTOR UNITS Why not lit a

(1) UNIDIRECTIONAL GOOD Switch? Final Shaft Speed: Max. 280 R.P.M. 60 min. per rev TORQUE 37 lbs. in. max. (2) REVERSING W rite for Catalogue Final Shaft Speed: Max. 600 R.P.M. 27 min. per rev. TORQUE 60 lbs. in. max. ARCOLECTRIC (SWITCHES) LTD. DRAYTON REGULATOR & INSTRUMENT EDWIN ROAD, TWICKENHAM C0.LTD..WEST DRAYTON,MIDDLESEX

Telegrams : “ Patella, Sedist, London ” Telephone : Hop 0594 (4 lines)

V.I.R.,CABLE BRAIDED, LEAD COVERED & TOUGH RUBBER SHEATHED r 'lMlU RFIPFL LTD Head 0fflw ■■ 156-170 Bermondsey Street, LONDON, S.E.1 1|U>I W fclrLL LIU* Cable Works: WEMBLEY, MIDDLESEX December 27, 1946 E l e c t r i c a l R e v ie w ( S u p p l e m e n t ) 111

I m i n g SPCAXINQ facilities IXPORTIY N O . 3

INSET MOUNTING

ERG’S HAVE TH E An unique facility of interest to designers and URGE TO GO ABROAD makers of Control Panels and similar equipment embodying flush mounted instruments, switches, RG Resistors have an exceptional etc. Frontal projection is reduced to one half the E electrical specification and performance, overall fuse depth and connections may be made with mechanical strength. direct into the base ends instead of through the usual back-studs. A simple fixing clip, as High-grade Vitreous Enamels used on our illustrated, eliminates the use of visible panel Tropical Resistors give long life, and definitely screws, thus facilitating ease of assembly and maintenance. Let us submit a sample mounting. assist in the trouble-free manufacture and per­ You’ll fall for it, sure ! formance of Radio Receivers, Television and Test Equipment. Exclusive to the NEW 5 to 100 amp. ERG Resistors are processed up to the highest Service Standards at a competitive price. ERG VIBRATION PROOF FUSES

ERG INDUSTRIAL CORPORATION LTD. Sales Office : EDWARD LTD. 10 PORTMAN SQUARE, LONDON, W.1 SHARSTON ROAD • WYTHENSHAWE Phone: W E L B E C K 8114/S MANCHESTER

4.m. E.W .8 1 12 (Supplement) Electrical R i v ii w December 27, 1946

^ A V IS &TIMMINS I? Head Office: BILLET ROAD • WALTHAMSTOW • LONDON ■ E.I7

BAKELITE------jkt C/rmflAnien MOULDINGS AND This high-speed Hand Grinder speeds up pro­ ------ERINOID duction, and makes a t o a n y TURNINGS better job. Many tool SPECIFICATION room and production uses. Supersedes hand FREDERICK W. EVANS LTD. tools. PLASTIC WORKS % Send for interesting * m a c h in e shop in y o u r h an d leaflet " Q 2 ” LONG ACRE, BIRMINGHAM 7 RUNBAKEN - MANCHESTER-1 TŁLIPH O N I : EASt 118* * H IT

— , L O M D E x PROCESS TIMERS Illustration shows mechanism of Pro­ cess Timer PR/D with 20 cams and interchangeable gearing. Each circuit BOBBINS can be provided with different time AND characteristics. WASHERS Ask for leaflet 92B/ER LONDEXLTD manufacturers o f r e l a y s BRITISH MICA C° LT0* BEDFORD 207 ANERLEY ROAD LUNDON S.E.20 December 27, 1946 E l e c t r i c a l R e v ie w hi The For Safer, Surer CLIP Earthing . . ADVANTAGES : ł ł ł t l i n Larger contact surface than any other Earthing W/lLTv Cl Clip. Suitable for all sizes of conduit. • A A permanent safeguard against accidents. Coils of T wire under tension, therefore a perfect earth * 10/6 per doz. Subject to Trade Discount

O b t a i n a b l e F r o m A l l L e a d i n g E l e c t r i c a l W h o l e s a l e r s

a s s u p p l ie d TOTHEG.P.O. EARTHING CLIP Write for Samples to— M. MOLE & SON LTD., 51-56 CHARLOTTE ST., BIRMINGHAM 3

THE LIGHTWEIGHT INSULATOR

An ideal material that can be specified with confidence

for any job requiring an insulator combining mechanical

strength with high dielectrical properties.

Manufactured to B.S.S. 972, 668 and 1137, etc.

Our technical staff can help you with your problems SPICERS LTD.

19 N E W BRIDGE STREET, LO N D O N , E.C.4. CEN TRAL 4211 Ext. 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 the many processes in which the application ot really up-to-date methods ensures the consistently high quality and reasonable price of Aberdare Cables.

ABtRDARE CABLES LTD., NINETEEN WOBURN PLACE, LONDON, W.C.l. Tel: Terminus2777

Works: ABERDARE, CLAM.. SOUTH WALES. ’Phone: Aberdare 416 Special/sis 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

■-À-r------at THE BfcàPEL RIVEKJ'KESS, A !D,