FURNACE FIRING

The L.S.E. RANGE includes : Standard A.C. & D.C. Motors in all enclosures and ratings. Variable speed equipments, A.C. & D.C. Motors for mines, cranes, mill auxiliaries, etc. Marine Motors, electric Cargo Winches, electrical equipment for steering gear. Generators, Alternators, Welding generators. Control Gear. Precision electro­ mechanical Instruments, etc. L eft: The robust rotor of a medium si%e “T R IS L O T ” motor

“ T ltm oi ” The L.S.E. “ T R ISL O T ” high torque squirrel cage motor will do the work of a slip-ring machine in the majority of cases, with the advantages of greater simplicity of motor and control gear. If the application calls for better starting performance than an ordinary squirrel cage motor can provide, ask us what a “ TRISLOT ” will do. “ TRISLOT ” motors are available in a wide range of outputs, and in all standard enclosures and types of mounting. LAURENCE, SCOTT A ELECTROMOTORS LIMITED Electrical Engineers since 1883. Norwich & Manchester E l e c t r ic a l R e v ie w Novem ber 2, 1945

P O ST -W A R reconstruction will call for copper in large quantities. Ample supplies are now available, both for old-established uses and for those resulting from the great war-time advances in technical development. Let copper co-operate in your future plans. W hatever your requirements the C.D.A. will be glad to give you technical information and assistance. COPPER DEVELOPMENT ASSOCIATION

A non-trading organization, maintained by the British copper in­ dustry, to supply information and advice, free to all users of copper

Grand Buildings, Trafalgar Square, London, W .C .2 and Kendals Hall, Radlett, Herts London Telephone : Abbey 2677 November 2, 1945 E l e c t r ic a l R e v ie w 1

TD! Lighting MOW ID TWO

Thanks to revised regulations, many essential factories not previously able to secure permits for Siemens “ Sieray” Fluorescent Tubular Lighting will now be able to instal this most modern light­ ing system—and at less cost than before. There is now a choice of two colours of light. The standard Sieray “ Daylight ” Fluorescent Lamp, and the new Sieray “ W arm -W hite” Lamp, produced to meet the need for a softer, warmer illumination. Both types of lamp share all the characteristics of Sieray fluorescent lighting. They give brilliant light without glare, and without interfering shadows. They are approximately three times more efficient than an ordinary gasfilled lamp of comparable wattage. Send for descriptive leaflet.

Siemens Lighting engineers are at your service without obligation.

Made throughout at SIEMENS Lamp Works, Preston, Lancs.

SIEM ENS ELECTRIC LAMPS AND SUPPLIES LIMITED. 38/9 Upper Thames St., London, E.C.4 BRANCHES : BELFAST, BIRMINGHAM, BRISTOL, CARDIFF, DUBLIN, GLASGOW LEEDS LIVERPOOL, MANCHESTER, NEWCASTLE-ON-TYNE, NOTTINGHAM, SHEFFIELD ’

A 2 E l e c t r ic a l R e v ie w N o vem b er 2, 1945

F o b f a / u j e , ECccPUcaC

P i ^ j

It is noteworthy where Tudor ac­ whether they were installed only yes­ cumulators are to be found fulfilling terday, or over thirty years ago as the most important duties. Over 500 many of them were—they are to-day British Power Stations installed functioning with consistent efficiency. Tudor. Many Tudor installations s a f e t y l y t e (Patent No. 313248) rank among the largest in the land is the Tudor Emergency Lighting System, which is automatic and in­ and have an enviable reputation for stantaneous in operation. It is instal­ led in thousands of schools3 hospitals, long-lived reliability. No matter factories and other large buildings

The Tudor Accumulator Co. Ltd. 50 Grosvenor Gardens, A ccumulators London, S.W .i. SLO ane 0168/9

W T 3 8 b / 4 4

Outwardly one transformer looks very much like another. It’s the unit inside the tank— the nerve centre—upon which real perform­ ance must be judged. The picture tells the discerning engineer just what he wants to know and shows how reliability is built into N ovem ber 2, 1945 E l e c t r ic a l R e v ie w 3

THE SMALLEST TRIPLE POLE SWITCHFUSE EMINENTLY SUITABLE FOR MACHINE TOOLS (| [D RflDETTE. IOAMPERES. 500VOLTS. CATALOGUE N°Ql438

BILL SWITCHGEAR LTD LONDON A.W.ZELLEY. ASTON LANE, PERRY BARR MANCHESTER GLASGOW ¡fnSSS BIRMINGHAM-20 nJEZTim n L ' ' ' phone emoffiaps son GIWMS/eitSWfTCH B’HAM

POPPY DAYm NOV. IO We must not fail the men who gave us Final Victor/. THEIR time of need comes AFTER Service. Please give more generously than ever this year. Sell Poppies too, or send a gift by post-to HAIG’S FUND, RICHMOND, SURREY. On your sympathy depends the British Legion’s work for ex-service men and women of ALL ranks, ALL Services and ALL Wars, their families, and the widows and children of the fallen. Space donated to Haig's Fund by . COLLINS ELECTRICAL LTD. E l e c t r ic a l R e v ie w November 2, 1945

L? N 1924 Bullers made the first big bushing of 06 kV capacity. To-day we are able to show this massive 2 4 2 kV OIL FILLED BUSHING. The porcelain parts were made in Bullers’ works for the British Thomson- Houston Co. Ltd. It measures 15 ft. inches overall and is one of the largest bushing of this kind yet. produced. Only the skill and knowledge acquired by long experience could produce insulatoss of such dimensions free from flaws. How much larger will be called for in years to come, only the future can say, But one thing is certain, whatever the size, Bullers will be ready with their unrivalled resources and experience to cope with the problem. B u l l e r s INSULATOR ANO IRONWORK

BULLERS LTD., 6 LAURENCE POUNTNEY HILL LONDON, E.C.4 Telephone : Mansion House 9971 (3 lines) ■y , Telegrams : Bullers, Cannon, London Manchester Office : 196 Deansgate, Manchester N ovem ber 2 , 1945 E l e c t r ic a l R e v ie w 5 B A INDUSTRIAL T-H / ELECTRIC TIMER

» I Designed to with­ stand frequent and ar­ duous service in indus­ try, the BTH Timer has ft two ranges, namely from 5 seconds to 5 minutes (in 5 sec. steps) and 20 seconds to 20 minutes (in 20 sec. steps). It is controlled by any form of pilot switch or push button and will give lasting.trouble-free service.

Writerr f for ■ wi »»V»list «No. * VI V5642-5 V Æ M W 1D nr u ÀB l n RUGBY THE BRITISH THOMSON-HOUSTON COMPANY LIMITED. RUCBY. ENGLAND. A 3566 E l e c t r ic a l R e v ie w Novem ber 2, 1945 for outdoor service

Russia.

rfBOOK THE 9th NOV. 71 FOR THE E .I.B .& .4 VICTORY BALL. A

The working conditions of this B.E.T. 10,000 kVA Transformer will be rigorous. But B.E.T. have built transformers for every condition and clime. During more than 40 years they have learned how best to meet the requirements of every kind of duty — an invaluable asset to be remembered when you are placing your transformer contracts.

The British Electric Transformer Company Limited In association with CROMPTON PARKINSON LIMITED

ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W C 2 Novem ber 2, 1945 E l e c t r ic a l R e v ie w

.WiOUCHOUr ;H( W0R\.«

GRINDERS

Faster grinding. Less wheel wear per unit of metal removed. Economv in abrasive wheels. •w p ow er cost:

The combination of such desirable qualities has made V\\cy£\e Grinders the first choice of grinding .equipment. Sizes are available for all classes of work, i.e., 2 ", 3 ", 4 ", G" and 8'' wheel diam eters, including right-angle m o d els.

T h e V\\cyc\e range of machines also includes Drills, Reamers, Tappers, Screwdrivers, Nutrunners, Sanders and Buffers.

p m ?

AIR COMPRESSORS • PNEUMATIC TOOLS • ELECTRIC TOOLS • DIESEL ENGINES • VACUUM PUMPS

CONTRACTORS* EQUIPMENT • ROCK DRILLS • DIAMOND DRILLS • OIL WELL TOOLS

Robert Sharp i Partners C 35 8 E l e c t r ic a l R e v ie w Novem ber 2, 1945

POST-WAR BUILDING EFFICIENCY DEPENDS UPON CONSTRUCTIONAL PLANNING f) JL/URING the ‘ speed-building ’ era when war factories were the great constructional problem, RAWLBOLTS played a vital role in the bolt fixings of fitments and machinery . . . those fixings hold, and will continue to hold so long as they are required to do so. In the days ahead RAWLBOLTS will continue to play their vital part, ensuring in speed of erection, man­ power economy, efficiency, and neatness of construction. Always Specify RAWLBOLTS for bolt fixings

The World’s Largest Manufacturers of Fixing Devices

THE RAWLPLUG CO. LTD., CROMWELL ROAD LONDON, S.W.7 B 299 Novem ber 2, 1945 E l e c t r ic a l R e v ie w 9 THE COMPLETE RANGE OF ‘ENGLISH ELECTRIC' TYPE ‘ T ’ HIGH RUPTURING CAPACITY CARTRIDGE FUSE LINKS HAS BEEN A.S.T.A. CERTIFIED FOR, COMPLIANCE WITH B.S.S. 88-1939 CATEGORY OF DUTY 440 AC4 (25,000 kVA at 440 VOLTS)

A.S.T.A. RATING RANGE OF CURRENT LIST No. CERTIFICATE No. AMPS. RATINGS AVAILABLE

617 30 TIA 30 2 to 30 Amps.

616 60 TIS 60 35 to 60 Amps.

615 100 TC 100 80 to 100 Amps.

251 200 TF 200 125 to 200 Amps.

252 300 TKF 300 250 to 300 Amps,

629 400 TM 400 350 to 400 Amps.

354 500 TTM 500 450 to 500 Amps.

353 800 TLT 800 550 to 800 Amps.

A c c e p t e d - 0 4 ¿A t Standard 2 u a / d y an d Pexfounasice dhe. 'W ddd Oven.

THE ENGLISH ELECTRIC COMPANY LIMITED London Office : QUEEN'S HOUSE, KINGSWAY, LONDON, W.C.2 FUSEGEAR WORKS .... STAFFORD Book November 9th for the E.I.B.A. Victory Ball November 2 ,1 9 4 5 20 E l e c t r i c a l R e v i e w for Rehabilitation schemes and a l l priority work ..••••

DELIVERY w ithout DELAY

Revo S.8662. H.O. Type D.P. Fuseboard. 10 Amp1250 V. for 2 -12 ways.

Revo S.72/6. Ironclad Switch. O.P. and T.P 250 V. and 500 V.

Write for prices and particulars of T h e R I G H T ^EAR for the job

REVO ELECTRIC CO.LTD.,TIPTO ^.s t a f f >evl(\

5 am

FERRANTI FERRANTI LIMITED HOLLINWOOD - LANCS London OFFice KERN HOUSE • KINGSWAY • W.C. 2 Novem ber 2, 1945 12 E l e c t r ic a l R e v ie w “ Safetee ” S WT HII-FISUS The range of “ Weekes ” ^combined Switch- fuses with Interlocked Plugs includes D.P. and T.P. types with rated capacities up to 500 Amps, 500 Volts. A.C. or D.C. (supplied weatherproof to order).

HE forms of control for Street ST A N D A R D T.P. SW IT C H -F U SE T Lighting are many and varied, The plugs are interchangeable and may be used but now CENTRALISED CONTROL to connect a machine to any number of supply is generally accepted as essential. points. Sordoviso Street Lighting Control The contact pins and interlocking tongue can­ units embodying the Sordoviso non­ not be inserted in a reversed position. tilting Mercury Switch with its inherent features of non-burning The plug cannot be removed when the Switch- contacts, low energising current, fuse is in the “ O N “ position. silence in operation and freedom The switch cannot be put “ON" unless the f r o m climatic effects, provide a most plug is in position and pushed right home. efficient remote or automatic control Full technical details and dimensions will be supplied with low installation and main­ on request. tenance costs. If you are contemplating a new scheme o r modifications to an exist- ILWIIIKCIS tne at^v‘ce ° f our Technical (LUTON) LIMITED 1S a'ways available. LUTON, BEDS. London Office : 36-38 KIN G SW A Y, W.C.2

Telephones: Holborn 1091 ; Luton 278

Branches: Birmingham, Glasgow, Newcastle LTD- lOUGHBOROUG^f Novem ber 2,1945 E l e c t r ic a l R e v ie w 13

E x ù s U ù m A a t J u l t u w n

/

Cable tunnel showing 66 kV. single-core Oil-filled Cables one set rising to transformer. Fire shields are fitted over Sealing Ends (Switchgeir the Cable runs. type) for 66 kV. '6 sq. in. single-core (12 mm. duct) Oil-filled Cable. (OH reservoir tanks in background).

Fulham Power Station has come through the ordeal of war, scarred but more powerful than before. Henley Contract Engineers and Henley Cables have played an important part in bringing new plant into operationL doas well vvcii asdo in icoiwiuiyrestoring J.uiuraid damage. The accompanying illus­ trations are typical of HENLEY HENLEY Oil-filled Cables supplied and installed at Fulham. ÇÂBLËS

W. T. HENLEY’S TELEGRAPH WORKS CO. LTD. 51-53 HATTON GARDEN, LONDON, E.C.I November 2, 1945 E l e c t r ic a l R e v ie w

STORAGE BATTERY

FOR ALL OTHER FOR ELECTRIC P U R P O S E 9 TRACTION STORAGE BATTERIES j

The first D.P. battery was introduced in this country in r888 when it was known as the “ Dujardin- r /á /s i Plante. ” Since that date the Company has concentrated on the manufacture of batteries for all purposes with the result that to-day, in the minds of battery users everywhere, the letters D.P. are an assurance of sound Design and efficient I Performance. ^&?D.R BATTERY C? L™ bakéwêll. derbysjjii , . ntF Phone •• SAKEWELL 81-82 ' J “ 1 " London Office : SO GROSVENOR GARDENS, S W I Ph ne : SLOANE 62 N ovem ber 2, 1945 E l e c t r ic a l R e v ie w N O V E M B E R 10

W e must not fail the men who gave us Final Victory. TH EIR time of need comes . AFTER Service. Please give more gener­ ously than ever this year, or send a gift by post. On your sympathy depends the British Legion’s work for ex-Service men and women of ALL Ranks, ALL Services and A LL W ars, their families, and the widows and children of the fallen.

Please send gifts to the local Committee or HAIG’S FUND RICHMOND, SURREY ■ | P O P P Y D A Y

THIS SPACE KINDLY GIVEN BY EVERSHED & VIGNOLES LTD. CHISWICK • LONDON, W.4 Telephone: CHISWICK 1370. Telegrams: " MEGGER, CHISK, LONDON ” No vember 2, 1945 16 E l e c t r ic a l R e v ie w

Book the gth November for the E.I.B.A. Victory Ball

IVo bouquets please

We, of course, expect no bouquets for hav­ at your service for the making of WIRES, ing placed all our resources at the Nation’s CABLES AND ELEXIBLES, either in­ disposal for war— it was a duty shared by sulated with rubber, synthetic or thermo­ all. But now, let it be known that all our plastic material. We make them in all facilities (improved in a hard school) are sizes for all purposes. MERSEY CABLE WORKS LTD l i n a c r e l a n e BOOTLE LIVERPOOL BOOTLE 2777-8 -9

Ini IF VULCANIZERS REPAIRING & JOINTING electric CABLES The Harvey Frost (H F) Process of repairing and jointing Electric Cables maintains them in efficient service and extends their life. HF Electric Vulcanizers are specially designed for this work and a full range of Moulds is available for Cables of the widest Var!ftj ' Heat is aut°matically con­ trolled by thermostat, correct tem­ perature being indicated by pilot light.

Write for particulars HARVEY FROST t CO. LTD. c n m ^ s m BISHOP'S STORTFORD, HERTS. ^ umpanyA. Telephone : 700 November 2, 1945 E l e c t r ic a l R e v ie w

This is the SINGLE BUSBAR UNIT

CERTIFICATED

Manufactured by FFU flU SON. PAILIW LIM ITED A N C H E S T E R , 11 E N G L A N LO ND O N . Temple Bar Q 7 11 / 2 ’o h o n e DROYLSDEN 1301(8 lines) GLASGOW» Central 5080 B IR M IN G H A M . Sutton ColdField 2 7 4 4 November 2, 1945 E l e c t r ic a l R e v ie w 18

S E L E N I UM S w T * r Q i l \ RECTI FI ERS

o

A S ta n d a r d DEVELOPMENT

IN SELENIUM RECTIFIER CONSTRUCTION

^ 'E N T R E Contact is not exactly a new development in S.T.C. Selenium Rectifier design, but it is an invention of which we, as the origina­ tors, may justly be proud. It provides a solid assembly which is impervious to shock and vibration and permits the rectifier to be finished to withstand the most severe conditions of humidity and temperature. Thus, during the war years, continuous research has added its quota to an alrerdy famous product of Standard Telephones and Cables, Limited. r 9 ts CENTRE CONTACT U a t^ a iM S '

Standard Telephones and Cabths lim ited NEW SOUTHCATE, LONDONrN.II Novem ber 2, 1945 E l e c t r ic a l R e v ie w 19

Photo: “ The Times " Designed for RELIABLE SERVICE In an era of constant change and progress, the ‘ Shetland ’ Flying Boat marks a distinct achievement in aeronautical design, construction and performance. No efforts have been spared to ensure the utmost degree of comfort and safety for passengers and crew, and merely to see the giant vessel is sufficient to invoke an intense admiration for the craftsmen who produced it. Four powerful engines provide a top speed of 26 < m.p.h. or a cruising speed of 184 m.p.h. and sufficient fuel can be carried for a journey of nearly 5,000 miles. In addition, two auxiliary motors generate electrical power for lighting, heating, air-conditioning and cooking. The electrical services equipment of the ‘ Shetland ’ are indeed, most comprehensive and efficient, and we take it as a worthy compliment that the Crabtree aircraft waring system is employed throughout this great air-liner. CRABTREE A • NAME - SYNONYMOUS - WITH • PROGRESS • IN - ACCESSORIES - AND - SWITCHGEAR

“ Crabtree ” (Registered) C.5 S7/4 4 . Advt. o f J. A. Crabtree <4 Co. Ltd^ Walsall, England C N ovem ber 2 , 1945 20 E l e c t r ic a l R e v ie w

£ S £ S p OF I aNuB m

Always recommend ELASTA lamps, . for satisfaction and ability under al conditions.

E.L.M-A. LAMPS MADE IN ENGLAND

ELECTRWCJj LAMPS POPES ELECTIRIO LAMP CO.,LTD. 5,E ARNSHAW STREET. NEW OXF0RD ST., 1 0ND0N.W.C.2

Telephone : TEMple Bar 6074. Telegrams ; “ Duramentum, Westcent, London.” Branches holding stocks from which supplies can be obtained

MANCHESTER LEEDS : 6 Park Square. 18 Pool St., M arket Street. LEICESTER : Tel. : Leeds 22119. 89 London Road. Tel. : Deansgate 5687. Grams : Grams : “ Pope's, Leeds 22119.” Tel. : Leicester 59028. “ Pope’s, Deansgate 5687.” Gram s : BIRMINGHAM : 3 Grosvenor Chambers, “ Pope’s, Leicester 59028." Broad St. Corner, Broad Street. B R I S T O L : Tel. : Midland 2580. 15 Brunswick Square. Grams : “ Pope’s, Midland 2580, Birmingham." Tel. : 23987. BELFAST (Managers : Campbell. Gardner & Co ) • 27 Fr, ^ ' " P°Pe’S' B"St°' 23987 ” Tel. : Belfast 25171. GGrams r o 4 : ■■ j i k,l!n S t r e e t - Liverpool Representative : M r. B. M A RKR K S. 2979 Ll a s c e U « Ron_gor.^ ' ' ' ^ o ’ o l I9 . Novem ber 2, 1945 E l e c t r ic a l R e v ie w 21

For tinning and sweat soldering. Supplied

In 2-oz. and 4-oz. jars and In tins of

if, ri<*J ‘‘RtoluX,' ' i-ihinC :

RYS METAL FOUNDRIES LTD

TANDEM W O RKS - MERTON ABBEY - LONDON - S.W.I9,

AND AT MANCHESTER ■ BRISTOL ■ GLASGOW E, D U B L IN Novem ber 2, 1945 2 2 E l e c t r ic a l R e v ie w

«¡ssras in Parkerizing and Bonderizing

&W É W SSSSSSm SSSfS

Pyrene Metal Surface Treatment Processes made their i n i t i a l appearance in the nineteen-twenties when Parkerizing was introduced. Since then the following significant advancements have been made :—

m m “ BONDERIZING” for Paint Anchorage.

m m “ PYLUMINIZING ” for the protection of Aluminium.

“ SPRA-BONDERIZING ” for Paint Anchorage by con­ veyorized and mechanically-controlled production methods.

“jD” Process for “ PARKERIZING” and “ BONDERIZ­ ING” of Iron and Steel, also for treatment of Zinc and Cadmium surfaces or mixtures of these with ferrous metal assemblies.

a ^ ^ J Q “ PYRO GRIP ” Cold cement for dressing mops and bobs used for scurfing and polishing.

“ PARKERIZING” for Lubrication.

a^ P 'ri^ “ BONDERITE ” ‘K ’ for treatment of continuous steel strip and sheet production.

IT CANNOT BE PARKERIZED OR BONDERIZED ,Reoi5,ereci> (Registered)

w ith o u t c h e m ic a l s

The Pyrene Company Limited Metal Finishing Division November 2, 1945 E l e c t r ic a l R e v ie w 23

DUNKIRK . . . EL ALAMEIN . . . CAEN . . . THE RHINE . . .

THESE NAMES — and many others — brought glory to British Arms. They also brought pain and suffering . . . loss of limb and faculty . . and loss of earning ability. To others they brought sorrow and anguish at the loss of a loved one . . . and a breadwinner.

W e can at least ease the physical hard­ ships of those who gave so much, by giving generously to Haig’s Fund— the fund that helps all ranks, all Services. Ours is so small a sacrifice.

REMEMBER THEIR CONTRIBUTION

TO VICTORY & PEACE ON f t o v .

r f O ^ EARL HAIG’S BRITISH LEGION please GIVE APPEAL FUND, RICHMOND, SURREY GENEROUSLY REMEMBRANCE,

It is with pleasure that Johnson & Phillips Ltd., donate this space as a small appreciation of their debt to our Fighting Men. N ovem ber 2 , 1945 24 E l e c t r ic a l R e v ie w ELECTROLUX REFRIGERATORS operate equally well

by ELECTRICITY, GAS or PARAFFIN ....

Having no moving

parts9 Electrolux RADIO INSTRUMENTS LTD PU R LEY WAY, CROYDON. Telephone' THOrnton Heath 3 ^ 1 1 Refrigerators are

silent and free from

vibra tio n ......

Si Built-in 99 and Free

Standing Models

will be available. ELECTRIC •TRUCKS •TRACTORS * locomotives conserve man-bower ELECTROLUX LTD LUTON BEDS WINGROV e & R O G E R S

BROADWAY COURT, £ S J w AY i L O N D O N , $tW ,l Novem ber 2, 1945 E l e c t r ic a l R e v ie w 25

IT STAYS WHERE IT'S WANTED

“ Memlite ” Adjustable Lamps are the result of a growing demand for localised lighting fittings that would really be equal to factory conditions. They stand any amount of rough handling and they keep their adjustment in spite of vibration. Types are available with two or three arms, in light or heavy patterns, with conduit, portable or “ Memlo ” bases. With the “ Memlo ” Low Voltage Transformer Unit both the safety and economy of the lighting is increased by operating on 12 , 25 or 50 volts. Write for List 252.

LOCALISED LIGHTING MIDLAND ELECTRIC MANUFACTURING CO. LTD., TYSELEY, BIRMINGHAM, 11 Specialists in the manufacture of Switch, Fuse and Motor Control Gear London Showrooms and Stores : 21-22 Rathbone Place, London, W.1 Manchester Showrooms and Stores : 48-50 Chapel Street, Salford, 3 November 2, 1945 2 6 E l e c t r ic a l R e v ie w I If.HTING SCHEMES

^£AtaÆe n eu / CONSULT FALKS who will gladly give urgent advice and assistance in connection with the supply and installation of accessories, fittings and all other material for electrical work for the Government housing programme and for war damage replacements. The EFESCA range includes this modern well-designed Book November 9 for the switch. E.I.B.A. VICTORY BALL Trade Counter : 34 Queen Street, Cheapside, E.C.4 ÇJ89-63A All correspondence to : Falk, Stadelmann & Co. Ltd., 91 Farrlngdon Rd., London, E.C .I. Hoi. 7654

Coming Good Stocks events. o f . . .

. . . Romac H.T. Terminals are avail­ able on cards for re-sale in one dozen boxes of 4 . . . or in dozen or gross lots for workshop use.

Price list sent on request. Enquiries for bulk supplies are invited. H.T. Terminals 'TXCONAL' ¡ j j f t quick - fitting type ; size 7 mim. (REGD. TRADE MARK) baring of wire, no solder or tools required. PERMANENT MAGNETS T hRCLM^ C IN D U stRIES l im it e d Made by The Hyde. Hendon, London. N.W.9

m v l u b o THE MULLARD WIRELESS SERVICE. CO LTD c c m t iio HOUSE. SHAFTESBURY AVENUE. LONDON. W .cll (£ ROM/V( November 2, 1945 E l e c t r ic a l R e v ie w 2 7

BOOK THE 9th NOVEMBER FOR THE E.I.B.A. VICTORY BALL , E l e c t r ic a l R e v ie w Novem ber 2 1945 N60ARK ► CIRCUIT BREAKER

Supersedes ordinary Switches and Fuses. Fully Automatic. Free Handle Pattern. Safe Ratingupto I5amperes, 250volts. Instantaneous overload trip or time lag overload trip or shunt trip.

J 6 e WRITE FOR PUBLICATION No. 920 KINGSBURY WORKS, THE HYDE PAWER EQUIPMENT HENDON LONDON, N.W.? | COMPANY 0 LIMITED | g

> 1 Y S T O ' J , ,

ELECTRIC I m APPLIANCES IQ The first of the many are on the way .... Specialists in the moulding of Poly­ For the time being supplies will, of course, styrene, Polythene and Cellulose be limited, but as materials and labour Acetate as applied to the Electrical become more plentiful we hope to get Industry. back into our “ peacetime ” stride .... Let us know your requirements and W e shall be very pleased to forward we will do our very best for you. any information requested.

FIRES KETTLES IRONS i n j e c t i o n and SOLDERING IRONS m o u l d e r s Sole Makers : (Bureau 1) W. T. FRENCH & SON LTD. Westmoreland Road 1 Telephone : C O u ^ 0"' N ‘W '9 “ MYSTO” WORKS, BIRMINGHAM 16 ‘-'"dale 8868/9 Novem ber 2, 1945 E l e c t r ic a l R e v ie w 29

IN SUPPORT OF THE MINISTRY OF FOOD HERE IS ANOTHER RECIPE FOR YOUR DEMONSTRATIONS:

Smoked Fish and

Macaroni Pie

Ingredients : \ lb. Smoked cooked fish. 2 ozs. Cooked macaroni. I pint White sauce. \ oz. Dripping. Browned crumbs.

Method : Place layers of fish and macaroni in a greased pie dish. Add seasoning to the sauce and pour it over the fish. Sprinkle the top with bread crumbs and bake at 450° until nicely browned.

Cat. No. I92J. ELECTRIC STOVE Co. Ltd. STREET, LONDON, S .W . I Book ?th November for the E.I.B.A. Victory Ball 3 0 Electrical Review November 2, 1945

The old phrase “ a gem of the purest water” is particularly applicable to Knowles Electro­ lytic Plant for the production of hydrogen and oxygen. Where purity is of prime importance, as in Non-Stop Service hydrogen for processes involving catalysis, in the hydrogenation of synthetic foodstuffs, etc., the Knowles electrolytic cell produces direct V. & E. Clock Coils are built to give a and without further purification, hydrogen which is 99 95% pure, with oxygen 99-8% century of accurate, continuous service pure. Each coil is subjected to exacting tests or The Knowles plant is unique in its simplicity, making it possible to operate with a minimum efficiency and is weather proofed by of labour which need not be skilled. Special devices make the equipment safe under all impregnation against dampness and conditions, maintenance is reduced to negligible proportions, and the plant has exceptionally changes of tem perature. V. & E. Coils long life. have done wonderful work on war service Equipment for plants of any size can be supplied. in precision instruments of all kinds and this experience is resulting in a peace­ time product of outstanding merit. COILS for ALL SMALLER uE THE INTERNATIONAL ELECTROLYTIC PLANT CO. LTD. also TRANSFORMERS AND CHOKES SANDYCROFT - CHESTER V .< E. FRIED LAND L td . Low erh oust M ills, B olllngton , CHESHIRE

S cien tific V . j j . j . H O . l l Novem ber 2, 1945 E l e c t r ic a l R e v ie w 31

•JH 0 0 0 0 0 ■ ■ n I * < mmm . —>

The Metal - Clad Switchboard illustrated is a typical example of a large number supplied to Government Departments for service in Ordnance and kindred factories and for many industrial applications at home and abroad. Our Oil Circuit Breakers, which are manufactured in a range of sizes from 30 to 1600 amps, capacity, have earned a reputation for reliability and service.

Descriptive literature w ill be sent on request. M. & G. SWITGHGEAR LTD KELVINSIDE WORKS, KIRKINTILLOCH, GLASGOW 32 E l e c t r ic a l R e v ie w N ovem ber 2, 1945

PAR WINS "TOLEDO

DARWINS-TOLEDO OVERSEAS LIMITED, SHEFFIELD

Current Price List cancelled New List available

WEATH ERPROOF METAL - CLAD PLUGS & SOCKETS 5 to 300 Am p. 250 / 500 Volt 3 and 4 Pole Earthed Type and 2 Pole.

For Electric Lighting and P o w e r, Transmission,

Communication, Plain P o rta b le T o o ls , etc. Socket

Manufactured b y SIMMONDS & STOKES LTD. VICTORIA HOUSE, SOUTHAMPTON ROW, LONDON, W.C.I HOLBORN #417 Novem ber 2, 1945 E l e c t r ic a l R e v ie w 33

Vowel fo% VoxtaHe Vlcutt

Perkins Diesels wield considerable power in Portable Plant circles! They have played

no small part in the advancement, for example, of

welding technique and practice by virtue of their economy, mobility, reliability and ease of o p e r a t i o n .

In widespread stationary, portable and marine applications, Perkins Diesels and Electric Plant have proved invaluable to the fighting services throughout the world.

DIESELS AND Q j Q PERKINS ELECTRIC PLANT 0 * 0 Telephone : > Peterborough 3241. E l e c t r ic a l R e v ie w Novem ber 2, 1945

DGLPHIN ENGINEERING CD. LTD. STERLING WGRKS. DAGENHAM. (SEVEN KINGS. 34EE) November 2, 1945 E l e c t r ic a l R e v ie w 35 Exact performance data —

for Crompton

BOOK THE 9th Switchgear. fFOR ™ THE E.l. “» H VICTORY BALL A Switchgear performance can be analysed exactly in the Short-circuit Testing Station. Crompton Parkinson are Members of The Association of Short-Circuit Testing Authorities, the Members of which can issue certificates of rating when tests, in accordance with the appropriate specifications, have been complied with. The Crompton Short-circuit Testing Station is capable of testing up to 350 MVA at 11 kV and 75 MVA at 400 volts. The rated performance and dependable operation of Crompton Switchgear is thus assured. 3 6 E l e c t r ic a l R e v ie w Novem ber 2, 1945

For quick, safe and economical repair of commutators and other electrical eq u ip m en t Westminster Commu­ tator Cement offers a cheap, efficient, quick method of curing dam­ aged insulation without holding up the machine for more than half an hour. There is no need to remove the armature or skim the commutator with a grinder. Dam­ aged mica can be easily removed and gaps filled until trouble develops before with Westminster Com­ ordering. W ith present delays in mutator Cement on the delivery valuable time may be lost spot, making a perma­ and the machine may remain idle nent repair and saving for several days or weeks. considerable time,money Every user of electric motors should and labour. keep Westminster Commutator Cement Used by Electrical Undertakings outfits handy in case of emergency. A Government Departments, Lon­ sound investment I Obtainable direct don Passenger Transport Board, National Physical Laboratory, from the manufacturers. Railway and Shipping Com ­ A complete outfit panies, Collieries, Stores, etc. coats only WESTMINSTER LABORATORIES LTD., West Works, PENN, Bucks. November 2, 1945 E l e c t r i c a l R e v ie w 37 sfl COMMUTATOR S e c ^

* COf>P B R OR COPPfcfc ^

of unsurpassed quality and durability— ensured by careful selection of raw materials, expert workmanship and high manufacturing standard.

We shall be pleased to quote for these sections.

te le p h o n e FREDERICK SMITH & COMPANY J e l e g r a m s (JLACKFRIARS (INCORPORATED IN THE LONDON ELECTRIC WIRE COMPANY * SMITHS. LIMITED) ANACONDA 8701 (9 lines) ANACONDA WORKS, SALFORD, 3. LANCS MANCHESTER" November 2, 1945 38 E l e c t r ic a l R e v i e w

i k i r i a l

—IF W E H A V E N ’T G O T IT, W E ’LL GET IT —IF A N Y ­ O N E C A N !

BR IT ISH C EN T R A L ELEC T R IC A L CO., LTD. 6 - 8 ROSEBERY AVENUE, LONDON, E.C.I.

PHOENIX NEST Rising from the ashes of destruction the mythological Phoenix symbolizes the birth of a new era—new ideas and new methods — in which Venner Time Switches will be ready with their con­ tribution.

TIME SWITCHES LIMITED

Kin g s t o n " by-pass • n e w m a l d e n - s u r r e y : phone m a l .2442 Novem ber 2, 1945 Electrical Review 39

PLUG-AHD-SOGCELOyj ---- — 7 | JouTLET I jl ISOCKET 5-AMPERE, 15-AMPERE, AND 30-AMPERE TWO-POLE PLUGS-AND-SOCKETS MADE TO B.S.196 ARE AVAILABLE AS ARE ALSO SIMILAR THREE-POLE PLUGS-AND-SOCKETS AND LARGER SIZES UP TO 250 AMPERES • FITTINGS EARTHED AND METALCLAD • NO LIVE PROJECTING PINS • ALL CONTACTS SHIELDED • COUPLERS SECURED BY SCREWED RINGS

COUPLER

IMMEDIATELY AND INDEFINITELY EXTENSIBLE WITH EASE AND SAFETY BY INSERTING HERE OTHER LENGTHS OF CABLE FITTED WITH COUPLERS

INLET INLET PLUG SOCKET

REYROLLE HEBBURNON-TYNE ENGLAND Novem ber 2, 1945 E l e c t r ic a l R e v ie w

are specialist manu­ facturers of tilting type mercury switches suitable for instrument work, domestic and industrial ap­ G.P.DENNISLIMITED paratus and power control gear. ST. MICHAELS STREET CHESTER THE MERCURY SWITCH MANUFACTURING CO. LTD. WEST DRAYTON, MIDDLESEX LONDON OFFICE: ABFORD HOUSE, WILTON RD., S.W.I Telephone: VICTORIA 5780

¡fc SOLDERING IRONS • RO BUST CONTROLLED HEAT • ^'^TERCHANGEABLE BITS

Visual Temperature Indicator if required ( Patent No. 5665/2)

BIT OR ELEMENT CHANGED IN A FEW MINUTES. LOW VOLTAGES Trade and Export Enquiries invited

Writs J æ t r 10 ACORN MACHINE TOOL CO. (1936) LTD. Telephone : Great Sntam.-______WESTBTRY, BRACKLEY, NORTHANTS ' f,NM£RE 201 & 205

38 BARRETT’S GROVE, STOKE NEWINGTON, N.I6 | Novem ber 2, 1945 E l e c t r ic a l R e v ie w 41

Because of low steam consumption per unit generated, Brush Ljungstrom Turbo-Alternator plants are eminently suitable for electricity generation in Industrial Establishments requiring 1,000 kilowatts and over. Immediate availability for load is ensured by the Turbine’s Q U 1C «STARTING feature—operation is simple and the plant is easy to handle. * Write for full details and Publication ER/C25I THE BRUSH ELECTRICAL ENGINEERING CO. LTD. LOUGHBOROUGH • ENGLAND

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

Branches : London, Birmingham, Cardiff, Bath, Manchester, Leeds, Newcastle, Glasgow, Belfast, Dublin , 4 2 E l e c t r ic a l R e v ie w Novem ber 2 1945 CASCADE w ater COOLERS of Robust Construction

m i w r m m m

CASCADE WATER COOLERS Ltd., Brewery Lane, DEWSBURY ; 73' 5

t l ewe (a

W hy be content with instruments which 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 ° L™ ADELPHI STREET • SALFORD • 3 Telephone: BLA 5040 Telegrams : • BRITJUEL, MANCHESTER1 43 Novem ber 2, 1945 E l e c ï r ic a l R e v ie w

BUILDING BU / “\ N E of the greatest tasks which lies ahead of the nation is the building of factories and houses. Factories to employ those who were employed in winning the war, factories to produce the goods which we must soon export in vast quantities ; houses for countless people who have lost their homes; houses for those who have never yet set up a home ; BUILDING—truly a word of deep meaning. Modern building on a large scale calls for POWER in many and various ways, but wherever there is a need for power there is a PETTER ENGINE to fit the job. May we place our long experience and knowledge at your disposal ?

^ » E N G I N E S

Available in a wide range from 540 B.H.P.

p E T T I B S I T D • 10UGHB0R04JGH • ENGLAND 44 E l e c t r ic a l R e v ie w November 2, 1945

’M 'W V P A R C OF RELIABLE SERVICE I I - « rV J IN THE DISTRIBUTION CM A Cables OF ELMA Lamps p,Ep r T R I C a r ka i E L E ^ I l\ I AbCM Conduits SUPPLIES EL FA Fittings BEAMA Heating and Cooking Appliances Ironclad and Branch Switchgear Accessories in General WE HANDLE HIGH-CLASS MATERIAL ONLY O UR ADDRESSES : LIVERPOOL MANCHESTER CARLISLE BIRKENHEAD 1-9 Stanley St. 3a, Norfolk St. Paternoster 94 Chester St. Pall Mall Row DOWNES & DAVIES MICA F you are users of Mica or Micanite, we should welcome the opportunity of giving you specimen Iquotations and supplying samples for prototypes. You will find us keen, enthusiastic people. The good service which we have rendered cheerfully and willingly during the war has won us a host of friends, and we never lose any opportunity of building goodwill.

YOUR ENQUIRIES WILL BE WELCOMED LANGLEY LONDON LTD. 161 BOROUGH HIGH STREET, LONDON, S.E.I

Phone : H O P 2946 (4 lines). Gram s : Laglycol, Phone, London

MICA STRIPS, STAMPINGS, SEGMENT SEPARATORS CONDENSER' PLATES, MICANITE TUBES AND BUSHES Novem ber 2, 1945 Electrical Review 45

It is very easily turned, sawn, drilled, or machined. That is the first advantage of LACTOID to remember. LACTOID is a lightweight casein plastic that can be manipulated to almost any desired shape. LA CTO ID ’S other advantages? W ell, it is ready to assume any colour— the range is practically limitless. It is non-flammable. It is extremely low in price. In fact, it is an ideal plastic for a host of everyday articles— low-frequency radio parts, electrical fittings, furnishing sundries and so forth. LACTOID is supplied in sheets, rods and tubes, and in discs. For further particulars and working samples write or phone

LARKSWOOD WORKS, LONDON, £.4. Tel.: LARKSWOOD 4491

LH/BX25i 46 E l e c t r i c a l R e v i e w Novem ber 2, 1945

CERAMIC INSULATORS FOR RADIO

ALSO FOR INSULATE WITH HIGH TENSION SOLID RUBBER In applying the rubber tape under LOW TENSION tension (after first removing the red AND protective interleaving cloth) each layer fuses to the other to form one piece of * REFRACTORIES SOLID yet flexible rubber. A single layer withstands more than JAMES MACINTYRE & Co. Ltd. 5,000 volts. From all Electrical Wholesalers & Factors WASHINGTON WORKS Manufactured by ROTUNDA Ll'MlTED BURSLEM Denton, Manchester, England

B laékheart & W M tteJhusairtt ■ MALLEABLE CASTINGS FOE THE ELECTMCAL W O T Y

& C? © 0 (L in c o ln ) MOBTIS MYKEHAM, LINCOLN ' ;M Telephone : North Hykeham 206/7 Telegrams : Malleable, L in co ln

^^TthenELCO STREAMLINE E L C O design and build soldering irons, machines, melting pots, and special furnaces for all soldering needs to suit an/ voltage from 24 v. up. Illustrated are four interchangeable units. There are man/ others.

Write for leaflet to Sole Agent Novem ber 2, 1945 E l e c t r i c a l R e v i e w 47 TYPE ‘A and B’ OIL CIRCUIT BREAKERS

S & C Oil Circuit Breakers Type ‘ A ’ and ‘ B ’ have proved their worth in S & C compound-filled and air-insulated switchgear. They can give equally efficient service as replacement breakers in exist­ ing cubicles and kiosks.

W ithin the range of these circuit breakers there is undoubtedly one class which is exactly what is re­ quired to exchange with those out­ dated breakers of indeterminate capacity you have waited so long to replace.

Briefly, the type covers making and breaking capacities from I0D MVA at 9 The i /lustration II kV upwards and certificates of testing shows an S Si C cir­ cuit breaker, truck- to A.S.T.A. capacities have been obtained mounted for use. in for this class of switchgear. S Si C air-insulated and compound - filled switchgear. This unit is rated at 150 /VIVA at 11 kV and is avail­ s i able for hand, spring Switchgear Cowans £ or electrical closing, DldTraFFnrd/6)Manche5ter I as desired. November 2, 1945 48 E l e c t r i c a l R e v i e w

Ellison Engineers have had considerable experience in the problems involved in starting electrically driven pumps and have designed a range of equipment to cover every requirement. They will willingly help in the choice of starting gear and demonstrate the advan­ tages of the Ellison range.

G eo r g e E lliso n LIMITED BIRMINGHAM 22 B ENGLAND Novem ber 2, 1945 E l e c t r i c a l R e v i e w 49

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

& C° IIP GREAT HAMPTON STREET BIRMINGHAM 18 50 Electrical Review November 2, 1945

1 ' i ■& / / 1 Photograph by courtesy of M e s srs. Vehicle Developments, Ponders End.

IN PEACE AS IN WAR Because of their reputation for unfailing reliability "BULL Motors were selected for many of the most vital war jobs. They will play a great part in supplying the needs of post-war Industry because . . . YOU CAN ALWAYS DEPEND ON

MOTORS R. & F. TURNER LTD., IPSWICH

Manchester. Birmingham. Sheffield wcastle and Glasgow E lectrical R eview Managing Editor: Hugh S. Pocock, M.I.E.E. November 2, 1945 Technical Editor : Commercial Editor: C. O. Brettelle, M.I.E.E. J. H. Cosens Contents Page Page Editorial.—Taxation and Industry . 613 Commerce and Industry . 636 Foundry Firing . - .615 Household Appliances . 639 Projected Birkenhead Station . 619 The Interim Budget . 640 Chemical Factories . . • 620 Electricity Output . 641 Weather Statistics . . .621 Training Cable Jointers . 641 Poultry House Heating . . 623 Employees’ Tenancies. By F. E. Industrial Measurement . 624 Sugden, Barrister-at-Law. . . 642 Technical Education. By H. S. Electricity Supply . 643 Booth, Graduate I.E.E. . 625 Financial Section . 645 Personal and Social . . 627 Forthcoming Events . 648 Correspondence . . . 630 Contract Information . . 649 Newport’s Fiftieth Anniversary 631 New Patents . 650 Views on the News . . 632 W illow Holme Power Station 633 Classified Advertisements 57 Boiler Cleaning . . . . 635 Index to Advertisers . 70

ED ITO RIAL, AD VERTISIN G & PU BLISH IN G OFFICES : Dorset House, Stamford St., London, S.E.I Telegraphic Address : 44 Ageekay, 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 : British Isles, £2 7s. 8d. ; Canada, £2 3s. 4d. ; Elsewhere, £2 5s. 6d. Cheques and Postal Orders (on Chief Office, London) to be made payable to ELECTRICAL REVIEW LTD., and crossed “ Lloyds Bank.”

ON EVERY HAND the demand is for THE NEW

ELECTRIC WASH BOILERS

ParHculars from BURCO LTD.. ROSE GROVE. BURNLEY 52 E l e c t r i c a l R e v i e w November 2, 1945 RELAYS For Operating or Protective |i » Purposes from Micro-Amperes

to Megawatts jb'Hu

Current—Voltage — Power — Reactive kVA Frequency — Speed

CO N TA C T S : — Maximum and/or Minimum Direct Acting or Electronic Relay Contacts.

O PER A T IO N : — Instantaneous — Definite Time Lag — Continuous “ Inching.”

0 Scientifically designed Magnetic damping— Bold reading scale— High working forces.

WRITE FOR CATALOGUE SHEET 380 EVERETT EDGCUMBE COLINDALE WORKS LONDON, N.W.9 Telephone : COLINDALE (MS

Manufacturers of all kinds of Indicating and recording electrical Instruments. Photom etry experts E lectrical R eview THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXVII. No. 3545. NOVEMBER 2. 1945 9d. WEEKLY

Taxation and Industry Wartime Burden Slightly Eased

IT H national expenditure still run­ considered but apparently abandoned; W ning at about the wartime level suggestions have been made that some and colossal domestic and foreign debts, form of dividend limitation is possible. there would seem to be little justification An interesting condition of the reduction for reduction of taxation at present. But is that the amounts refunded shall be this is to adopt a purely financial view ; “ ploughed back ” into business and Mr. other considerations make some measure Dalton promised that the Finance Bill of relief imperative. Consequently even would contain provisions to ensure this. the most orthodox economists have Industry is to secure further relief as welcomed the small concessions announced from April 6th next. This has been fixed last week by the Chancellor o f the as the “ appointed day ” for the coming Exchequer. into operation of the income tax allowances It is true that with regard to income tax in respect of capital expenditure on allowances the relief is illusory, except in industrial buildings and plant erected on so far as a definite early decrease in the and after April 6th, 1944. An article burden is substituted for undated post­ on the effects o f these provisions appeared war credits—jam to-day instead of jam in the Electrical Review o f June 22nd, 1945. to-morrow. The reduction of a shilling in the standard rate is likely to have a Incomplete Relief more stimulating effect. It is worth All those in the electrical industry who recalling that after the last war income tax have been pressing for the reduction or went up but it was still only 6s. in the £ in removal of purchase tax on domestic 1921 -23, as compared with the proposed 9s. appliances were pleased to learn of the Chancellor’s decision to free cookers, Substitute for E.P.T. Sought space heaters, water heaters and More substantial benefit may be expected refrigerators from the impost. Their from the reduction of the excess profits satisfaction cannot be complete, however, tax to 60 per cent, as from January 1st, until the tax upon a wider range of coupled with the promise of an early appliances is remitted. Certainly a number start on the repayment of the 20 per cent, of these other appliances may be con­ refund provided for in the 1941 Finance sidered to be “ luxury ” articles in these Act. The Treasury realises that E.P.T. days of continuing austerity, or at least is not an ideal way of levying tribute from non-essential, but such things as electric industry. It is apt to encourage kettles and irons are certainly not in this extravagant, wasteful expenditure and, the class and should have been included in Chancellor added, “ even downright dis­ the exempted equipment. honesty.” Exploration of possible alter­ Further concessions next April are natives is under way. The substitution foreshadowed but the extent of these of a flat rate of tax and profits has been must depend largely upon the reduction Novem ber 2, 1945 614 E l e c t r i c a l R e v i e w of expenditure in the meantime. T erm in al Midland Centre, in urging them not to payments in respect of war contracts stand aloof from the social and economic and the costs of demobilisation of the affairs of the community, observed that Forces must inflate this expenditure for their active contribution to solving social some months yet. The securing of problems should be commensurate with economies must engage the serious atten­ their knowledge. There are many other tion of the Chancellor and the spending facets to civilisation, but it may be stated Departments. that all who aspire to lead, although devoid of detailed expert knowledge, At no previous time Equipping has so much interest been should develop a similar logical attitude the Home shown in the provision towards social problems as is obviously of appliances for house­ necessary in science and engineering. hold use. This is mainly because the I n his I.E.E . presidential building programme presents a large-scale Boiler address in 1939, Sir John- opportunity which has never before Availability stone Wright referred to occurred. The latest manifestations of the locking-up of capital this interest, to which reference is made in power stations due to loss of steaming in other pages, are an exhaustive study capacity represented by the gap between of the subject prepared by P .E .P .; a survey boiler and turbine availability. His sub­ by the Board of Trade of appliance sequent suggestion that boiler plant should production before and during the war; an be specified to be capable of running explanation from B.E.A.M.A. of the continuously up to m.c.r. for six months reasons for the present shortage; and the with on-load cleaning only, without the remission of purchase tax on a range of gross overall efficiency falling by more heating, cooking and refrigerating equip­ than 21 to 3| per cent, (depending on ment. It would seem that in spite of the the type of firing), led to the setting up appearance of many newcomers there of the Boiler Availability Committee. will be work for all those engaged in the The latest publication of this body, noted industry for many years ahead. elsewhere in this issue, provides in­

E v e n without the new contestable evidence that falling off in Heavy Arrears business the scope would availability is mainly due to cleaning be tremendous. The methods that modem conditions have made decline in production, much of which obsolete. Its proposals are constructive will have to be made up, is well illustrated and practicable.. by the Board of Trade figures referred to above. Cookers, for instance, were pro­ W it h transmission pres- duced at the rate of 250,000 a year before 5,000-MVA sures o f 264 kV a possi- bility in this country, the war. In the first half of this year, Circuit- although production had been very much Breakers higher rupturing capacities speeded up as compared with the inter­ than the 2,500 M VA hith­ vening years, the annual rate was still only erto associated as a maximum with 132 kV 39,800. The corresponding figures for will come up for consideration. Fortun­ space-heating apparatus were 1,250,000 ately the design of arc-rupturing devices has and 219,000 respectively; for kettles more than kept pace with increases in 350.000 and 109,000; for irons 1,250,000 circuit-breaker M V A , so that stresses and 315,000; and for vacuum cleaners imposed by the heavier duties are actually 400.000 and 28,000. less than they were with earlier types having lower ratings. For this achievement credit To claim that scientists must be given to researches carried out at Scientific and engineers should the high-voltage testing stations of the Approach play their part in shaping manufacturers, since opportunities to use national policy is not to supply systems for the purpose are say that, solely by virtue of their training obviously restricted. In a contribution to (however well this may qualify them to Electrical Engineering (the journal of the make objective assessments), they American I.E.E.) for June, Messrs. A. W. ought to exercise a predominant position Hill and W. M. Leeds present evidence of control. Mr. F. J. Elliott, in his that seems to show the feasibility of inter­ chairman’s address to the I.E.E. South rupting capacities as high as 5,000 MVA. Novem ber 2 ,1 9 4 5 E lectrical Review 6 15 Foundry Firing' Electrical Heating of High-Viscosity Fuel

U R IN G the war in view of the means of electrical heating. An extremely D importance of conserving oil tanker important feature is that although the firing space, the Government decided that systems were originally designed and laid petroleum should not be employed for out for the use of a very high grade of fuel, furnace heating, so that users of this class as now modified and described they are of fuel had to resort to some alternative suitable for dealing with the heaviest grades firing medium. One of the permissible fuels of fuel, and it is reasonable to speculate that, suitable for certain types of industrial having now made the necessary capital outlay furnaces is a high-viscosity fuel consisting to permit the change in the firing medium, of a mixture of pitch and creosote, the latter when things become normal again the com­ being a solvent of the former. But a serious pany will be in a position to use one of the disadvantage of this mixture is that at normal heavier types of oils which will be avail­ temperatures its viscosity is too high for able for furnace firing. The creosote-pitch is delivered to the storage tanks of the installations heated to about 90 deg. F., and it is maintained at this temperature both in the storage tanks and during its flow through the pipe systems feeding the furnaces. Further, thé

ionpra apes- COUSIT; ipafi Ik I i m Forte- T h re e 400-lb. M o rg a n t i l t ­ sees Is ing furnaces and three of a ass t line of seven pit fires stress (right) are connected to the pipe-line of the non- actti: ferrous foundry installa­ tion; note pre-heaters iha® tcreds outs storage, pumping and of tk atomisation, so that it tons is necessary to maintain it at a high enough fuel is preheated, also electrically, to about ü a® temperature to keep it sufficiently fluid at 200 deg. F., at each furnace immediately Dot» all times of delivery and servicing. before it is delivered to the burner to ensure Recently at the works at Kilm arnock of proper atomisation. Fuel delivered to the of* Glenfield & Kennedy, Ltd., we saw some A.«. factory by road is first heated at the gas works, idenff interesting installations for serving different so that on arrival it can be delivered straight types of industrial furnaces with this type inter- to the storage tanks, while that delivered MVA. of fuel, and how fluidity is maintained by by rail is heated up on the factory site while 616 E l e c t r ic a l R e v ie w Novem ber 2. 1945 it is still in the transport tanks which are heating cable supplied by British Insulated suitably equipped with steam coils before it Cables, Ltd. The cables are bound firmly can be pumped or will flow into the storage to and in direct contact with the pipes, under tanks. Means are available for supplying the lagging, and in every case a dupli­ cate line heater is installed for stand-by purposes. The line heaters are also thermostatically controlled. In view of the electrical heating of the pipe-lines the lagging has a special significance. The one-inch thickness of heat insulation has an “ insulating efficiency ” of about 80 per cent, of the bare surface losses at temperatures varying from 80 deg. F . to 200 deg. F . The lagging is fire-resisting and weatherproof, and is reinforced and finished with hard- setting compound and painted. In all instances the storage tanks were in existence before the change-

The fuel is heated electrically to a b o u t 200 deg. F. a t each furnace ; pre-heater secured to building stanchion. (Right) The ring main of the heavy foundry serves one 5-ton ferrous rotary furnace ; the 10-kW pre-heater has a throughput of 55 gallons p e r h o u r the transport tank heaters with steam from the factory boiler installation for this initial heating. There are three main installations in the Glen- field factory, one serving melting furnaces and pit fires in the non-ferrous foundry, another for a rotary ferrous melting furnace in the heavy foundry, and a third which provides for a number of furnaces in the smithy. In each installation’ there are one or more over to the present fuel, serving for petroleum storage tanks equipped with immersion storage. For the non-ferrous foundry there heaters under thermostatic control. are two underground storage tanks, each The hot fuel is pumped from these tanks with a capacity of 1,270 gallons. They are by motor-driven units integral with the unlagged and are now each equipped with system, and through a ring main pipe-line two 4-kW immersion heaters of the tubular from which the various furnaces in the sheathed type, each measuring 7 ft. 6 in. particular installation are fed. The ring long. With their thermostat, the heaters are main has a gradual fall back to the pumps situated below the level of the tank oil and storage tanks of about one foot per 100 draw-off, so that they are always covered ft. o f pipe run. The ring main and the bv the oil. The thermostat is installed above service pipes are equipped with “ line the immersers and at the same end of the tank heaters ” consisting of “ Rockbestos ” as the draw-off. asbestos-insulated, flat twin lead-covered In the short delivery 4-in. pipe between Novem ber 2, 1945 E l e c t r ic a l R e v ie w 617 the transport vehicles and the storage tanks which is loaded at 6 k W . One pre-heater is a coarse single filter, while in the 2-in. only with a maximum throughput of 7 suction line between the duplicate positive gallons per hour and a loading of 1-5 kW displacement pumps which serve the ring serves all three of the pit fires. Each main pipe-line and the storage tanks is a coarse duplex filter. The pumps each have an output of 150 gallons per hour against adjustable pressure of 50 lb. per sq. in. maximum, and the 1-HP pump motors are squirrel- cage machines with direct-on starting equipment fitted with no-volt and overload releases. The ring main is about 265 ft. long, and connected to it in the sequence of the oil flow are a two-ton Stein & Atkinson rotary furnace, three of a line of seven Morgan pit fires, and three 400-lb. Morgan tilting furnaces. The tee-off to the pit fires is roughly half-way along the ring main, and the pipe from the main suction to this point is of 2-in. bore. Beyond this point back to the suction point it is of 2-5-in. Four furnaces are fed from the fring main of the smithy installation ; one furnace shown bore. The line heater for the 2-in. pipe is loaded at 12 W per foot tun, tilting furnace has its own pre-neater with a while that for the 2-5-in. pipe is loaded maximum throughput of 6 gallons per hour at 15 W per foot run. In the tee-off to the and a loading of 1-25 kW . rotary furnace is an oil pre-heater with a The pre-heaters are products of Archibald maximum throughput of 35 gallons per hour Low Electrics, Ltd., who also supplied the storage-tank immer­ sion heaters, and all the heaters are of similar construction irrespective of their size. The bodies are made from steel tubes welded into heavy steel flanges, and all the

The smithy storage tank is lagged and elevated to about 10 ft. above floor le ve l

protuberances a r e welded to the body. The element tubes, which are welded into the removable tube plate, operate at a low temperature, and the loadings represent only about 8 W per sq. in. of tube surface. The 618 E l e c t r ic a l R e v ie w Novem ber 2, 1945 elements are of the removable-core type. suction and the storage tank is a coarse Each heater is fitted with both automatic duplex filter. control and hand-reset safety thermostats, The ring main pipe-line in this case is provision for a warning lamp, a pressure only about 80 ft. long, because it serves relief valve, a thermometer connection, inlet, outlet and drain connections, and a dust- tight terminal cover. The largest size, that for the rotary furnace (6 k W ), measures about 4 ft. in overall length and the main cylindrical body is about 10 in. in diameter. In the branch connections immediately in front of the furnace burners in the case of the pit fires, i.e., between the burners and pre-heater, are fitted fine duplex oil filters— one to each burner. In the case of the heavy foundry installation the storage tank is also underground, outside the building, and is unlagged. It is cylindrical and disposed horizontally. W ith a capacity of 2,500 gallons, it measures 12 ft. 8 in. long and 6 ft. 6 in. in diameter. It is fitted with two immersion heaters and a thermostat, similarly situated to those in the tanks already referred to, and the tubular heaters are each 10 ft. long and loaded at 6 kW. The duplicate motor-driven oil circulation pumps are also installed in the open, almost Line heaters are in direct contact w ith the pipes, immediately above the storage tank, and etc. (lagging removed from filters) these also have a capacity of 150 gallons per hour against a maximum head of 50 lb. one furnace only. The bore is 1-5 in. and per sq. in. The return pipe-line is equipped the line heater cable, which is similar constructionally in all the installations, is loaded at about 10 W per foot run. The 2-in. short suction branch line is also equipped with a 10-W per foot run line heater. The furnace in this case is a S. & A. 5-ton rotary equipment. The pre-heater in front of the burner has a throughput of 55 gallons per hour and is loaded at 10 kW , and in all other respects it is similar to those of the other furnaces. The storage tank in the smithy building is mounted on a steel structure about 10 ft. above the floor level. Because of its exposed and accessible position the tank is lagged with a 2-in. thickness of heat insulation. The tank is 5 ft. 6 in. in The hot fuel is pumped from the storage tanks by motor-driven units integral with the system diameter and 24 ft. 3 in. long and has a capacity of 3,600 with a pressure regulating valve complete gallons. An indication of the effect of the with by-pass and isolating valves, as is the lagging, by comparison with the other storage case in all installations. Between the pumps tanks, is that in this case there are two 15 Novem ber 2, 1945 E lectrical Review 619

Wffit immersion heaters, each 7 ft. 6 in. long and pre-heater with a throughput of 14 gallons loaded at only 2-5 kW . Fo r emergency use per hour. In three cases fine duplex filters «seii the tank is also equipped with steam coils are fitted in the pipe-line between the heater * sens having a total heating surface of 5 sq. ft. and the burner. Again there is a coarse duplex filter between Each installation is centrally controlled the pumps suction and the storage tank and from a distribution and control board made the duplicate motor-driven circulating pumps by the company’s electrical department are similar to the others, except that the from materials supplied by Clyde Fuel capacity of each pump in this case is only Systems, Ltd. The equipment on each 100 gallons per hour. There is also in this board includes push-button stations for the case, however, a 31-HP motor-driven transfer remote control of the motors and heaters pump with a capacity of 1,000 gallons per which are normally automatically controlled. hour, for pumping the creosote-pitch fuel A feature of the installations is the use of from the rail tank into the storage tank. Pyrotenax wiring in view of the high ambient The ring main pipe-line for the smithy temperature in the region of some of the installation is about 270 ft. long. It has a furnaces. The total heating load of the 2-in. bore, and the loading of the line- three installations is about 60 kW. heater cable is 12 W per foot run. Four W e are indebted to M r. Henry Gardner, smithy furnaces are fed from this ring main, managing director, Glenfield & Kennedy, two via 1-kW pre-heaters, each with a Ltd., for permission to view the installations throughput of 2- 5 gallons per hour; one via and publish this description, and to M r. a 1-kW pre-heater with a throughput of N. M . Arthur, works engineer, for his 3 gallons per hour; and one via a 3-kW co-operation in the collection of information.

Projected Birkenhead Station cb che pipo, ■ » Y the courtesy of Mr. F. W. Brecknell, the station will contain two 50,000-kW turbo­ liters) M.I.E.E., the borough electrical engineer alternator sets and condensing plant and four of Birkenhead, we reproduce a photograph of a boiler units each having an evaporative capacity 1-5 k ik model prepared by Sir Alexander Gibb & of 300,000 lb. per hour, but the layout is I is SBdc Partners, consulting engineers, of the new power designed for an ultimate capacity of 200,000 kW. station which is being erected for the Corpora­ The 11,000 V turbo-alternators will run at s all tie tion. The model was made for submission to 3,000 RPM, the steam conditions at the turbine led at ate the Fine Art Commission and it will be seen stop valve being 900 lb. per sq. in. at a tem- ran. Ik brand Is nth a 1W heater. Ik is a S. U pment. Ik of the burae if 55 ¡a!® led at I0W respects it s i the oik in the sit- si on as® ft. above tk Model of the new Birkenhead power station on which work will be commenced shortly ause of i* gble posiliK that the buildings will be a good example of perature of 900 deg. F. The main switching with a modern functional design. Work is expected of the outgoing transmission system will be at t insula® to begin upon the erection of the station within 132 kV. The furnaces will be fired with I i in- “ the next few months. pulverised coal and electrostatic precipitation ' j in. !®l Messrs. Merz & McLellan, the consultants, plant will be installed. The chimneys will be Iy of 1® inform us that the site of the station is on the 325 ft. high above ground level and will be of west bank of the Mersey at Bromborough about feet of ik brick construction as will also the buildings of a mile north of the Eastham Locks entrance to the power station. Condensing water will be er sion? the Manchester Ship Canal. In its initial stage provided from the Mersey. are W 6 2 0 E l e c t r ic a l R e v ie w Novem ber 2, 1945 Chemical Factories Power Supply Requirements

P E C IA L safeguards needed for the to provide alternative feeders, since faults distribution of electric power on a and interruptions seemed never to obey the large scale within the chemical industry were ordinary laws of probability. To ensure that the subject of the inaugural address of duplication of supplies was maintained in all M r . J . B . L a n c a s t e r , I. C . I. (Billingham circumstances, the system operation must be Division), Ltd., as chairman of the Tees-side delegated to one person competent to safe­ Sub-Centre of the Institution of Electrical guard supplies, usually the power station or Engineers, delivered at Middlesbrough. system control engineer, who would direct It was emphasised that continuity of supply all switching operations with the aid of of power was an over-riding requirement, adequate means of communication. for a number of distinct chemical processes With a view to classifying the occurrence of were often so interlocked that failure of any system faults M r. Lancaster had analysed one would throw a whole sequence out of records of all incidents (since 1928) leading production for a long time. Thus a general to interruptions of supply on a large high- disturbance due to a heavy electrical surge of voltage industrial network. He examined only one-quarter of a second duration each incident and ascribed a basic cause to might interrupt the entire production of a each fault, classified under eight headings huge plant for twelve hours. and presented in tabular form. That survey Another special characteristic of chemical formed the subject of a general'commentary, factories was their unusually high load illustrated with lantern slides. factors, but the very steadiness of load in turn introduced problems of overheating of Thermal Over-Rating. electrical equipment. It would appear, For instance, on only two occasions had perhaps without intent on the part of protective gear failed to operate, but designers, particularly of switchgear and simplification was desirable. Most switch­ distribution fusegear, that current carrying gear and distribution fusegear was thermally contacts did need a thermal cycle in order to over-rated for service in chemical factories. maintain their efficiency, possibly due to Overheating was a fruitful cause of failure microscopic relative movement of parts by on fault and Mr. Lancaster recommended expansion and contraction. that at least double the normal current rating should be specified. Interruptions Minimised The design of transformers left little to be In an endeavour to illustrate how inter­ desired, but their end-boxes did not provide ruptions could be minimised, circuit lay-out any margin for error on the part of cable diagrams were exhibited of two distribution jointers and definitely cramped their work. systems. One of them represented a 6-6-kV The extreme reliability of factory distribution radial feeder system fed directly from cables was beyond dispute, even under the factory power station with inter­ seemingly adverse circumstances. Tests had connectors. The other showed an almost shown that very good protection against equally loaded 11-5-kV ring main system damage by external fire was afforded by operated in units, each energised by two eight coats of sodium silicate solution transformers, one of the latter forming an (1-4 sp.gr.) painted on to the cables. Cable additional source through frequency changers terminations and joints required to be from the public supply mains. Thus the improved fundamentally; one might reason­ short-circuit duty had been kept below 150 ably expect solid plastic substances to replace M V A with consequent reduction of the price the present compounds, which might form of switchgear by comparison with the 500 the actual insulation moulded over the cable- and 350 M V A ratings necessary on the radial end and removable in one piece by gland- system. The ring main system had been plate unbolting. very much more flexible in service and the It seemed fundamentally wrong to strip lower cost of switchgear permitted 11-5-kV equipment at stated intervals merely to extensions to be more readily undertaken. make sure that nothing was wrong with To gain security it was insufficient merely it. The only effective substitute for routine Novem ber 2, 1945 E l e c t r ic a l R e v ie w 621 maintenance was a complete testing routine, release from service, had been kept in use which had yet to be devised and tried out well beyond their normal maintenance in practice. Routine insulation resistance periods by regular observation of temperature. tests at high voltage had been in operation Relays were subjected to routine current- for the last two years with encouraging injection tests and maintenance was based results. Some circuit-breakers, difficult to entirely on the results. Weather Statistics Importance in Power System Operation H E recent discussion of weather effects with B.E.A.M.A., in a form that electrical T on power system operation at a joint engineers could use to devise the most meeting in London of the Institution of economic wind power units for various Electrical Engineers with the Royal Meteoro­ localities. The Meteorological Office was logical Society was preceded by four short also preparing a climatological map of the introductory papers to which reference was British Isles which aimed to include maps of made last week. the means of the main meteorological In the subsequent debate M r. R . A . S. elements, the extremes, and also the frequency T h w a i t e s (Manchester Corporation) said of occurrences of as many phenomena as there was a common experience for which possible. he had never yet heard a satisfactory explana­ M r. E. A . P o w e l l (London Power Co.) tion, that an overhead line would stand up said that when his company first started a satisfactorily to rain or snow but would control centre in 1928 the Air Ministry’s frequently flash over in wet sleet. During a daily forecasts were only valuable for fore­ storm in 1937 the wind reached a velocity casting two or three days ahead. They of 100 miles an hour at Holyhead, there therefore developed their own technique was 4 \ in. of snow and ice on the overhead which enabled them to forecast the load lines and it had been calculated that a factor required practically for each day. If hour of safety of 16 would have been necessary to to hour information could be obtained it guard against those conditions. In the 1940 would be of the greatest value in meeting severe storms, which ranged from North extreme conditions. Although temperature Wales to Southampton, 44 in. of hard ice had a big effect on the load, it was not very built up, but the fact was that such conditions serious so long as there was sufficient plant of glazed frost had not occurred for 50 years. available and the forecast covered a period of, say, 10 hours. Average Rainfall Maps M r. E. G . D y m o n d (Kew Observatory) M r. D . J. G l a s s p o o l e (Meteorological demonstrated the radio-sonde described by Office) outlined the progress that had been Wing Commander Poulter. made in recent years in the Climatological M r. G o r d o n M a n l e y (President, Royal Branch of the Meteorological Office in Meteorological Society) showed curves summarising the records and rendering them illustrating weather effects at higher levels useful to electrical engineers. He mentioned and particularly towards the north of maps of average rainfall on a scale of 2 in. England. A t the higher levels the tendency to the mile over parts of Scotland for the was towards dry snow whereas at the inter­ North of Scotland Hydro-Electric Board, mediate levels there was nothing but rain, information about the frequency of occur­ especially on the coast. A t a distance of rence of heavy falls o f rain, of intense falls in 20 miles inland, however, there was con­ short periods, and runs of consecutive days siderable snow at the intermediate levels without rain. Emphasising the importance and the possibility of rime icing on the of this information for hydro-electric power conductors, especially with a strong wind. stations he asked that full use should be He also showed a map illustrating the made of the Meteorological Office in this number of days on which snow might be connection. Other records included the expected in various parts of the country. mapping of the mean wind force, the maxi­ M r. R . G . C a r r o t h e r s (Kennedy & mum gusts and the frequency of wind of Donkin) said the papers made it clear that various directions and forces. Some of those accurate short term weather forecasts were data had been summarised, in conjunction very necessary. A t the present moment 6 2 2 E l e c t r ic a l R e v ie w Novem ber 2, 1945 information was available which enabled with a minimum wind speed of one mile per reliable predictions to be made for the future, hour would be to raise the temperature of an but there did not seem to be any means for ideal overhead line by something of the order making reliable intermediate predictions. of 10 deg. C. The weather also affected the N ot much had been said of the effect of operating temperatures of underground cables variations in rainfall on the design of hydro­ and the relation between the moisture content electric plant. Calculations of the necessary of the soil and its thermal resistivity required storage were involved and with the present further consideration. scarcity of information it seemed that hydro­ M r. W . H i l l (West Gloucestershire Power electric plant could only produce dependable Co.) speaking of the formation of ice on supplies of power by continuing to use conductors, said power system engineers expensive civil engineering works and the would benefit considerably if they could have storage of large quantities of water. reasonably accurate short period forecasts Reliability was very costly and the question of cold snaps because with a few hours was whether a lower order of reliability warning the necessary precautions could be could not be accepted in some cases. Some taken. industries, for example, might be able to tide Mr. C. T. M e l l i n g showed some curves over a period of shortage of electricity just illustrating the variation of load with tem­ as in some other public utility services the perature in the year 1942-43 when the vagaries of the weather were allowed to Ministry of Fuel and Power urged the use of interfere with reliability as a matter of course. less electricity. It seemed that the variation of output with temperature depended on Altitude and Plant Rating individual reaction to temperature and from

M r. J. F. S h i p l e y (one of the secretaries that point of view the fuel economy campaign of the Royal Meteorological Society) re­ did not bring about much improvement. marked that reliability was not so important In the winter of 1944-45 there was a sharp overseas as in a closely populated country increase of load with reduction of like Great Britain. Honest British firms temperature. trying to sell internal combustion engines in Mr. W. N. C. C l i n c h (Northm et Co.) said Africa or India took altitude rating con­ that there might be more collaboration ditions into account which increased their between the meteorological services and the costs whereas competitors from other control centres for electricity supply. The countries did not, so that British firms electricity supply engineer needed to know suffered. The banks of streams on which what the weather conditions would be in the hydro-electric plants were situated at extreme next few hours in the area for which he was altitudes might be destroyed by flooding so responsible and there was a big field for that prediction was desirable of the time co-operation with the meteorological service. when snow and ice were likely to melt. In Bermuda the average velocity of the wind was never below 11 miles an hour and Export Inquiries seldom exceeded 14 miles an hour. W ith 1 W E have received the undermentioned such constant conditions he wondered why inquiries from firms and individuals nobody had put up a wind power station in overseas who wish to secure agencies for British Bermuda. The maximum wind velocity was electrical equipment ana appliances or to import between 40 and 50 miles an hour. them into their territories. We shall be glad to M r. E. E. H u t c h in g s (E .R .A .) said that pass on to them replies received from readers one aspect of the operation of overhead which should be addressed to the Editors, quoting the number given in parentheses. We lines under varying weather conditions which cannot vouch for the standing of inquirers and had received little attention was the conductor manufacturers replying to them will no doubt temperature. Although it required experi­ require the usual references:— mental confirmation, there was evidence that India.—An inquirer in England wishes to for a certain increase in wind pressure an pass on to Indian friends the names of suppliers increased rating of 30 or 40 per cent, was of transformers, motors, alternators, wires and necessary for a given conductor. The cables, conduits, lamps, ceiling and table fans, transition from natural to forced convection switchgear, etc., who desire representation in India. (X.124.) at low wind speed had not yet been fully Switzerland.—Agencies for makers of electric investigated, but it had been computed that motors, drills and hammers, carbon brushes the combined effect of that radiation together etc. (X.125.) Novem ber 2, 1945 Electrical Review 623 Poultry House Heating: Satisfactory Use of Floor-Warming Installation

PW'HE usual hatching season for chickens is lined with asbestos sheeting for heat insulation. from November to about June, so that The heating installation is energised from a during the early part it is essential for warmth 6-kVA transformer (London Transformer Pro­ to be provided for the operation of an incubator ducts, Ltd.), giving approximately 66 V on the and for the newly hatched chicks whilst they secondary side, the mid-point tapping being await dispatch. At Bedwell I.ane, Stevenage, provided and earthed. The secondary is con­ nected to copper busbars from which No. 8 SWG galvanised iron wires are taken to form the floor warming circuits. These iron wires are laid in the floor at a spacing of 3-J- in. with a 1 ft. margin on all four sides of the room. Three circuits are pro­ vided, each having a length of 484 ft., the total loading being of the order of 6 kW. The wires were laid on top of the original 4-in. concrete floor, a 2 -in. deep mixture o cement and sand then being

T h e 12,000-egg in c u b a to r w ith tr a n s fo r m e r and control gear on the left, and (right) a 2 in. layer of cement and sand being placed over the iron wires Herts, Mr. G. G. Ivory, a poultry farmer with an extensive mail-order business in day-old chicks, has an incubator room containing a 12,000-egg incubator (Stephens CatJinet Incu­ bator, Ltd.) with provision for the installation of a second equipment of the same capacity at a later date. floated over the wires. Thermograph records Specifying a room temperature of 65 deg. F, have confirmed that the specified room temper­ Mr. Ivory approached the Northmet Power ature of 65 deg. F is maintained uniformly by Company for the provision of an electric heating means of the thermostat. The floor installation system. Although one of the various forms of is cut off by time switch during the system peak low-temperature heating would no doubt have hours, at present 7 a.m. to 10 a.m. during the met the requirements the company decided, months of December, January and February, with the object of obtaining experience of the without materially affecting the performance. As new method, to install a floor-warming system the incubator stands against the north wall, two which would have the advantage of keeping the 250-W heaters are mounted behind in order to heating load off the supply system peak and prevent a current of cold air being drawn into hence qualify for a lower rate of charge. Mr. the inlet ports. Supply to these and to the R. Grierson, the company’s heating engineer, incubator (3 kW) is without restriction. and Mr. J. C. Horrell, Northmet district After two seasons the farmer is most satisfied superintendent for Stevenage, supervised the with the results, the past season from February installation. 1st to May 30th resulting in an 81 per cent, The incubator room is a wooden building hatch of fertile eggs. Live chicks numbered approximately 30 ft. by 18 ft. by 6 ft. 9 in. to 21,225, and the electricity consumption for all the eaves and 10 ft. 6 in. to the ridge. It is purposes, including the floor warming, was constructed of tongued-and-grooved' boarding, 9,317 kWh. 624 E l e c t r ic a l R e v ie w Novem ber 2, 1945

to enable the meter to be switched over for Industrial Measurement corrosion-potential measurements. New Marconi Instruments A series of electrode assemblies of the dip, immersion and through-flow types has been fk D ISPLA Y of electrical measuring apparatus, designed for varying industrial requirements, originally arranged by Marconi Instruments, including the monitoring of boiler feed water in Ltd., for a convention of chemists in London power stations. The “ at-a-glance ” indicator and prolonged for general inspection last portion of the outfit comprises a mains-energised week, included some recent robust designs for three-stage DC amplifier with a large degree of industrial requirements. Incidentally the com­ inverse feed back (developed by the neon- pany is now making its own galvanometers stabilised cathode circuit of the final valve of and indicating instruments. the chain) which is applied to the bias system of The selection included a signal generator, a the electrometer to promote potentiometric beat frequency oscillator, an AC wave analyser, self-balancing. The alternative ink-graph a circuit magnification Q-meter, an indicating recorder, driven by a synchronous motor, electrometer, an electromagnetic impulse counter utilises a special electrometer valve (as a null and the prototype of a tester designed for indicator) which presents a very high impedance rapidly checking the output of dry battery cells to the electrodes so that polarisation is in factory production. The change-over from minimised. voltage to current checking and all switching operations are performed automatically by a one-revolution motor driving cams, which X-Ray Jubilee drop chopper bars for contact making. The time cycle is four seconds, all the operator Celebration of Röntgen’s Discovery has to do is to insert a cell in the test jig and 30 commemorate the fiftieth anniversary watch coloured pilot lamps. T- c of the discovery of X-rays by Wilhelm A moisture-in-wood meter speedily deter­ Conrad Röntgen on November 8th, 1895, a mines the electrical conductivity of timber series of meetings will be held between November between two needle electrodes in a convenient 8th and 10th. The programme has been holder designed to penetrate 5 mm. for testing planned jointly by a number of societies in­ to a depth of 2 in .; a screw-down clamp terested in the medical, scientific, and industrial applicator is used for thin wood. A direct aspects of X-rays, including the Royal Society, reading is obtained when the instrument pointer the British Institute of Radiology, the Faraday is returned to zero by rotation of a knob on a Society, the Physical Society, the Institute of dial calibrated in actual percentage of moisture Physics and the Institution of Electrical content. The instrument is portable and is Engineers. The inaugural meetings will be energised by dry batteries; it weighs 2 1 lb. held on November 8th at the Royal Society, complete. Burlington House, Piccadilly, W.l. Moisture in Grain There will be a joint meeting of all participating societies at the Phoenix Theatre, For the cereal and milling industries there are Charing Cross Road, W.C.2, on November 9th, moisture-in-grain meters, operated in a similar when Sir Lawrence Bragg, O.B.E., F.R.S., way. These electronic meters reveal how the will deliver an address on “ The Scientific presence of moisture varies the dielectric Consequences of Röntgen’s Discovery of properties of the grain sample, which is placed X-Rays.” in a test cell at the top and recovered by pressing Scientific meetings dealing with the applica­ a button from a sliding tray at the bottom of tions of X-rays to physics and chemistry are to the instrument. There is a battery-operated be held at The Royal Institution on November model and mains-energised types have been 9th and 10th. made to provide continuous ink-graph records At a meeting on November 10th at the by means of sampling electrodes placed within Institution of Electrical Engineers the following the grain chutes of storage granaries and mills. papers will be presented :—“ The Development The scope of electrometric determination of of Electrical X-ray Equipment,” by Dr. C. C. the hydrogen-ion content of fluids by means of Paterson; “ The Evolution of X-ray Photo­ pH-meters for gauging their neutrality (acidity graphic Materials,” by Dr. H. Baines; “ In­ or alkalinity) is growing in an increasing dustrial X-ray Analysis, Past and Present,” by number of industries. The temperature com­ H P. Rooksby; and “ The Growth of Industrial pensator, which balances the standardised Radiology,” by W. J. Wiltshire. Dr. P. potentiometric e.m.f. with that generated electro- Dunsheath, President of the I.E.E. will preside. chemically in the glass-electrode system, is There will be a small exhibition of historical adjusted manually in the case of a portable items of interest in the Reid Knox Hall of the battery-operated pH-meter, but functions auto­ British Institute of Radiology, 32, Welbeck matically in mains-energised models. They Street, W .l, on November 8th, 9th and 10th. are accurate in “ spot ” determinations to The exhibits will include early X-ray tubes and 0 02 pH, the control dial being calibrated radiographs, books, apparatus, and one of the directly in pH units as well as in millivolts earliest cine films. Novem ber 2, 1945 E l e c t r ic a l R e v ie w 6 25 Technical Education A Review of Some Present Problems

H R E E problems con­ ßy H. J. Booth, Graduate I.E.E. because it happens to nected with technical mar a traditional syllabus education have been the subject of much nicely moulded into a prospectus, college argument in the correspondence columns of routine and staff hours. These difficulties this journal and elsewhere of late. They should be faced and overcome. are: The inclusion of pure physics in the The only point on which I sympathise syllabus of engineering examinations and the with the colleges is the plea that the H .N .C . revised syllabus of the I. E .E .; the ability syllabus is already overloaded and to extend of the technical colleges to make provisions it beyond a period of five years is undesirable. for this; and the falling status of the Higher To alleviate this disadvantage I would suggest National Certificate. three solutions: First, that any subject which To be an efficient engineer requires not is not required to gain exemption from the only a sound technological education but I.E .E . examinations should be excluded also a thorough train­ from the course, e.g., ing in the fundamentals The author considers that the status of machine drawing; on which that technical the Higher National Certificate is falling. secondly, under the knowledge is based. He suggests reasons for this and makes new Education Bill, Otherwise, it is like proposals for arresting the decline. A day release will be building a house on a change in the employers’ attitude towards made compulsory up to slab of rock set in the Certificate is considered necessary the age of eighteen and quicksand; the rock is therefore more time sound enough in itself but has no adequate will be made available; thirdly, a teaching of foundation. fundamental physics in the lower stages of A large number of the problems which the course will make the teaching of the arise in electrical engineering, especially in higher technology a good deal easier for the the new fields of electronics, radio and lecturer in the final years. Taking these television, can only be solved by reference to points in order, a knowledge of machine the fundamental laws of physics. In many drawing can be gathered from the pre-N.C. cases, the pure physicist has a clearer insight courses or during the student’s practical into the nature of a problem than an engineer training. Separate courses in this subject with a host of technical qualifications. could be run for those who intend to become Many young men to-day, with an extensive designers or designer-draughtsmen, so knowledge of alternators, transformers, arranged that they may be taken before, voltage regulation, etc., have little idea what after or concurrently with the N.C. courses. an ampere or volt is in terms of fundamental Secondly, most colleges find that they can units or what they are actually a measure of. arrange in a two-year course of one whole It may be argued that it is not necessary for day per week what they allow a student to an engineer employed in, say, the electricity do in three years of evening, classes of three supply industry to know how many e.g.s. nights per week. Thus when the new units of current are equivalent to one ampere, Education Bill becomes operative, the H .N .C. but it is a short-sighted view. A soldier is courses will not take up five years unless taught not only how to use his rifle but also additional subjects are introduced. Here, at how it works. Moreover, once a grasp of least, is a definite answer to the time problem. fundamentals has been achieved, higher Thirdly, the teaching of fundamental technology loses much of its awe. physics in the lower stages of the course has Technical colleges are designed to provide a relation to my argument in the previous their students with the knowledge they section. In enabling the higher technology require. If the leading educational to be more readily understandable it will ease authorities lay down that a knowledge of the lecturer’s burden and the progress of the certain subjects is advantageous to the engineer course will be quicker. In quite a number in the efficient prosecution of his duties, then of electrical formulae, the use of basic concepts the colleges should do all in their power to can reduce the length of the proofs con­ provide such instruction, and not object siderably. 6 2 6 E l e c t r ic a l R e v ie w November 2, 1945

That the status of the Higher National recognised by the professional institutions. Certificate is falling is evident from the According to the I.E .E . Students Journal remarks of young men holding this hard- this matter is receiving consideration. Let acquired qualification. I think the reasons us hope it bears fruit. for this decline are three-fold. In the first The recent suggestions by the I.E .E . Post- place the war-time intensive courses have War Planning Sub-Committee on Education had the effect of mass-producing H .N .C . are good, theoretically, and together with the holders; although the standard of the new regulations for Associate Membership certificate itself has not suffered owing to they should help to arrest the falling status these intensive courses (on the contrary, it of the H .N .C . But what is also needed is a has generally increased), employers take the change of view on the part of employers. view that quantity is not quality and hand out the technical posts exclusively to degree holders. Education and Training In the next place, the H.N.C.does not provide such a thorough training in fundamentals as Opportunities to be Seized Now is required of a degree student taking his O M E views on technical education and intermediate examination. Finally, the S training were expressed by M r. S. H. H .N .C . does not carry any weight as an R i c h a r d s (chief meter examiner, Electricity indication of the student’s general education, Commission) in his inaugural address as while a degree does to a limited extent. It chairman of the Measurements Section of may also be added, as a correspondent the Institution of Electrical engineers. His pointed out recently, that the H .N .C . lacks a object was to emphasise that the two I.E .E . national standard and it was suggested that reports on this subject could not be ignored. the I.E .E . should set the H .N .C . examinations They summed up and extended the experience for all colleges. But it already does the next of the past in a set of proposals which would best thing, namely, assesses all examination make opportunity more equal for all. Those papers and answers. documents marked an epoch in the history There is an obvious danger in this lowering of the I.E .E ., but it was not suggested that of the status of part-time-acquired qualifica­ strenuous endeavour would not be necessary tions. The young graduate rightly feels he to reach the goal set up. shouid be given a chance to prove his abilities; The reports were a collective responsibility fading this he becomes discontented and as well as a challenge. I f the future were discontent breeds apathy. The younger grasped the world could be made a better aspirants will note this apathy and become place to live in, but only by tackling the indifferent to technical education, and the training problem so that budding electrical supply of qualified engineers and technicians engineers could be fitted for the tasks that will fall. lay ahead of them. The qualification of Grad. I.E.E. whether Speaking of the older member and his by B.Sc. or H .N .C . should be respected, and, responsibility, Mr. Richards cited instances indeed, the graduate by the H .N .C . usually that were illustrative of what could be done has more practical training to his credit. in small ways to implement the I.E .E . Further, a matriculated student with two proposals for the education of future genera­ H .N .C .’s (not a rare occurrence), one in tions of engineers. Turning to the younger electrical and one in mechanical engineering, generation and its opportunity, Mr. Richards is much more highly qualified than the said that the implementation of the I.E .E . B.Sc. with a general engineering degree. reports would depend upon several factors; University’s Attitude the co-operation of the older generation and Another cause of discontent arises when a the avidity with which the younger seized H .N .C . holder, finding it avails him nothing, the chance that was being offered. attempts to qualify for his B.Sc. He finds Members of the Measurements Section that no matter how learned he is, he has to had a unique opportunity of reaching out to start at the bottom again and is subject to the unknown, seeking for what might be a all the rules and regulations of a youth from pearl of great price. The lead had been school. London University does not recog­ given by the I.E.E. It was worth while to nise professional qualifications as meriting belong to such a body, to be one of a company any exemptions from its degree examinations. of adventurers, joining with a band of It fails to realise that its degrees are seekers for hidden truth. N ovem ber 2, 1945 E l e c t r ic a l R e v ie w 6 27 PERSONAL* and SOCIAL News of Men and Women of the Industry tBTHE Council of the Incorporated Municipal Bloomfield Grove, Bath (telephone: 2723). Electrical Association has elected Mr. A. J. Mr. R. M. Hobill, who during the war years has Newman, formerly city electrical engineer of been the transformer works manager, will Bristol, an associated member. It is proposed shortly take over the duties of London area to elect Mr. B. Handley, formerly electrical manager. Mr. R. J. Hebbert, while retaining engineer and manager, Portsmouth, and a the position of staff manager, has lately been past-president of the Association, an honorary appointed manager, Eastern Counties, with an member. address at Grove House, Sutton-on-Trent, Mr. F. S. Naylor, B.Sc., A.C.G.I., M.I.E.E., Newark (telephone: Sutton-on-Trent 269). borough electrical engineer and manager at Mr. R. H. Pilcher, who has been serving with Gravesend, has been appointed borough the R.A.F., has now resumed duties as manager electrical engineer of of the Ipswich branch of Johnson & Phillips, Islington to succeed Mr. Ltd., at 5, Arcade Street (telephone: Ipswich A. P. MacAlister, who 3417). is retiring. Mr. Naylor Mr. H. B. Style, general manager of the served his apprentice­ Wessex Electricity Company is retiring to take ship with the British up an appointment abroad. Mr. Robert B. Thomson-Houston Co., Brown, deputy general manager prior to his Ltd., Rugby, receiving military service, has now returned and will his engineering training succeed Mr. Style as general manager. at the City ahd Guilds Lt.-Col. K. G. Maxwell has resumed his duties (Engineering) College, as manager of the publicity department, of the South Kensington. Metropolitan-Vickers Electrical Co., Ltd. Mr. After a period of power E. E. Walker, who has been acting manager, station testing work, he has been appointed assistant manager. Mr. was appointed technical Mr. F. S. Naylor M. Hird is being retained as adviser on technical assistant to the chief editorial publicity. electrical engineer of Imperial Chemical In­ dustries during the erection of the 93,000-kW Mr. Griffith Jenkins has been appointed Billingham station. From 1928-35 he served as general manager to John Bennie, Ltd., Glasgow. technical assistant to the West Midlands J.E.A., Before the war he was in charge of the provincial and was engaged on the specification, design sales of the associated company, Marryat & and construction of the Ironbridge generating Scott, Ltd. He has spent the war years in a station and the development of the Shropshire Government Department. distribution scheme. On October 19th a cheque was presented to Between 1935 and 37 he held the post of Mr. Jonah Newark upon his retirement after technical assistant to the general manager of completing 55 years service with the Automatic the Sheffield Electricity Department, and he Telephone & Electric Co., Ltd. Mr. Newark, then became chief electrical engineer to Firth- who is a wireman, helped to design cables for Browns, Sheffield. In 1940 he was appointed use with the earliest telegraph relays, notably electrical engineer and .manager at Southwark, the Gullstad type and he took part in a number a position he held until going to Gravesend last of special outside installation jobs under­ year to succeed Mr. N. A. Elliott. Mr. Naylor taken by the company. The presentation was was chairman of the I.E.E. Sheffield Sub-Centre made by Mr. W. S. Vick, works manager, and in 1939-40 and has served on the E.R.A. Sub- Mrs. Newark received a handbag. Committee on Electricity Supply Costs and the The engineer and manager of the Brighton E.D.A. Welding Tariff Sub-Committee. Corporation electricity undertaking draws our Lt.-Col. J. Taylor, R.E.M .E., has been attention to an outstanding example of long released from the Army to return to the staff service. Mr. G. J. Casselden, the chief clerk of Ferranti, Ltd., and has been appointed of the undertaking retired in 1938 but returned northern area manager, operating from the in 1939 and finally left in September. Mr. works at Hollinwood. Mr. J. Mendelson, Casselden joined the Brighton Lighting Co. in manager for Scotland and Northern Ireland, 1884 and remained with the undertaking when has moved to 98 Greenbank Crescent, Edin­ the Corporation acquired it in 1894. burgh, 10 (telephone: 56345). Mr. L. A. Mr. G. Flett recently retired from the position Walker has been promoted manager, Midlands of power station superintendent in the Bradford Area; his address is 5, Holifast Road, Sutton Electricity Department after thirty-two years’ Coldfield, Birm ingham (telephone: Erdington service with the undertaking. On October 19th 1505). Mr. H. H. Weeks, manager of the a presentation, which took the form of a cheque, Western Area, operates from Chelwood, was made to him on behalf of the staff and Et 628 E l e c t r i c a l R e v i e w Novem ber 2, 1945 workpeople, this being followed by a dinner to the works of Brook Motors, Ltd., at Hudders­ given in his honour by the senior members of field. The party was met at the general offices the staff. Councillor D. Hellewell, chairman of and provided with guides who conducted the the Electricity Committee, presided at the members through the various departments and presentation, which was made by Mr. T. H. Carr, explained the stages of AC motor manufacture. the electrical engineer and manager. Other After the tour the party was entertained to tea speakers included Mr. N. Wright and Mr. W. in the canteen. Leggott, superannuated employees of the Southport Corporation Electricity Com­ Department who had served under Mr. Flett mittee is opposing the release of Mr. W. E. for long periods. Masters, its consumers’ engineer, who has Tynemouth Corporation Electricity Com­ tendered his resignation upon obtaining another mittee is to extend for twelve months the appointment. services of Mr. J. B. Glen, the borough electrical On relinquishing his appointment as Con­ engineer and manager, who is due to retire troller of Light Metals in the Ministry of at the end of the year. Aircraft Production in order to rejoin the British Mr. E. Oldale, mains superintendent, Oldham Aluminium Co., Ltd., Mr. G. W. Lacey, Electricity Department has resigned to become B.Sc., has been appointed general sales manager. mains engineer at Stockport. He had been at Mr. G. A. Anderson, B.A., who recently re­ Oldham for about ten years. linquished his appointment as Deputy Controller Mr. Taylor Croft, a director of Contractors of Light Metals to rejoin the company, has (Pudsey), Ltd., electrical engineers, has been been appointed deputy general sales manager. presented with a silver cigarette case by members Mr. L. E. Laidlaw, A.M.I.Mech.E., has joined of the Council and magistrates, as a memento Machine Units, Ltd. (after six years in the of his year of office as Mayor of Pudsey. R.A.F.) as technical representative in Bristol Liverpool Electric Light and Power Com­ and the West Country in connection with the mittee has recommended that Mr. H. Black- company's electrical accessories and cutting burne, temporary assistant inspector (now in tools. H.M. Forces) be appointed on his return to The First Lord of the Admiralty, the Rt. duty as apprentice instructor; Mr. J. L. Low, Hon. A. V. Alexander, accompanied by Mr. B.Sc., electrician (now in H.M. Forces) be H. D. MacLaren, Director of Electrical Engineering to the Admiralty, and Mr. R. W. Adams, Admiralty Regional Electri­ cal Engineer, Midland and South Wales District, recently visited the Witton Engineer­ ing Works of the General Electric Co., Ltd. The visitors were received by Sir Harry Railing, chairman of the com-

Mr. A. V. Alexander with Sir Harry Railing at the G.E.C. W itton works

pany and Dr. C. C. Garrard and Mr. J. J. Gracie, joint general managers of the works. During a walk round the works, submarine motors and switchboards, large motors and generators for the Admiralty and many types of marine control were inspected, and the visitors witnessed million-volt dis­ appointed assistant maintenance engineer; charges in the high-tension test department. Mr. S. Lowey, consumers’ engineer be designated They also saw a comprehensive exhibition of meter and test superintendent; and Mr. W. H. G.E.C. war products. Murray, chief inspector, electricity meters, be Mr. T. B. Boothman is the winner of the Sir designated meter and test engineer. Henry Fildes Medal essay competition His On October 20th a party of about 75 members subject was “ Training of Factory Managers, of the Leeds Branch of the Association of Practical Administration; which should be Supervising Electrical Engineers paid a visit First and Why.” The medal will be presented Novem ber .2, 1945 E l e c t r ic a l R e v ie w 629 at the annual general meeting of the Institution tion of Mining Electrical and Mechanical of Factor}' Managers on January 26th. Engineers. On leaving Glapwell he was presented with a gold wristlet watch from the Mr- W. Arthur Jones, who is retiring from the position of general secretary of the Electrical electrical staff. Power Engineers' Association at the end of the The Manchester Electricity Committee has year, is to receive a gift of £1,500 as a token os expressed appreciation of the services of Mr. the members' regard. The Divisional Council!' F. P. Seager, substations engineer, and Mr. were recently asked to send in any nominations W. Baxter, superintendent of electrical repairs, for the position by October 31st. A commen­ on the occasion of their retirement. cing salary of £800 is to be paid. The National Mr. W. A. H. Parker, M .I.E.E., M.Am.I.E.E., Executive Council has put forward as its nominee has been appointed electricity consultant to the Mr. J. F. W allace, assistant general secretary. National Farmers’ Union. He will help Mr. J. B. Lancaster, the chairman of the members with the Tees-side Sub-Centre o f the I.E.E., whose negotiation of terms address is summarised in this issue, is a native and conditions of elec­ of Birmingham. He was educated at Bedford tricity supply and advise School and later, concurrently with a five-year them on the application engineering apprenticeship course with the of electricity to their B.T.H. Co., took a degree course at the Rugby farms, both with regard College of Technology. He secured the London to lay-out and machin­ B.Sc. degree with second-class honours in ery. Mr. Parker is well mathematics. From 1933 to 1934 he underwent known as an electricity a special student apprenticeship course with the consultant and has had B.T.H. Co. and then served with the Yorkshire considerable experience Power Co. in various capacities from 1934 to of electrical designing. 1940. He was then appointed to his present He was chairman of the position of electrical distribution engineer with E.D.A. Farm Sub-Com­ I.C.I..(BiUingham Division), Ltd. mittee which provided the first electrical exhibit Mr. W . A. H. Parker Mr. A. Haddock, the chairman of the I.E.E. at the Royal Show at Sheffield Sub-Centre (see p. 641), is distribution Bristol. After serving an apprenticeship on engineer in the Sheffield Electricity Department. electrical machinery design with Electromotors, He was born at Leeds in 1901 and was educated Ltd., Manchester, he held positions in the at the Central High School in that city and at the electricity departments of the Farnworth U.D.C. Leeds University where he took the B.Sc. degree and Heywood Corporation before being with first-class honours in electrical engineering. appointed meter and testing engineer with the From 1927 to 1936 he was with the Yorkshire Lancashire Electric Power Company. In 1922 Electric Power Co. as district engineer and then he became sales engineer to the West Gloucester­ went to Sheffield as assistant mains engineer. shire Power Company but left in 1943 and has In 1937 he was promoted to deputy distribution since been engaged as technical adviser to several engineer and two years later to his-present industrial concerns. position. Mr. H. Outram, assistant engineer at the Electrical Commander J. D. Markland, Fulham power station, is resigning to take up R.N.V.R., has been appointed chief engineer the position of power station superintendent of the Maidenhead Corporation Electricity to the Hong Kong Electric Co. Department to succeed Mr. C. A. Britton, who, Mr. J. Kenyon, of Blackpool, has been as already reported, is taking up an appoint­ appointed electrical maintenance engineer at ment with the Sudan Light & Power Co., Ltd. Preston Corporation power station and Lieutenant-Commander A. C. Hazel, R.N.V.R., Mr. J. Blackburn, assistant control engineer. w ho is at present serving in the Pacific, hopes to A victory dinner to the staff and employees rejoin Low Temperature Carbonisation, Ltd., was given recently by the Biddle group of in January- Mr. Hazel was at one time area companies. Mr. J. Platt-Mills, M.P. for organiser with the Coal Utilisation Council Finsbury, referred to the companies’ extensive and before that sales superintendent to the output of “ Vectair ” heating, ventilating, South Somerset & District Electricity Co., Ltd. cooling and other equipment for the Service He won the E.D.A. National Public Speaking departments. Contest in 1934. O b ituary Mr. T. Muirhead, who has been chief electrical engineer at the Glapwell Colliery of the Sheep- Mr. F. Bradford.—We regret to report the bridge Coal & Iron Co., Ltd., for the past death, at Wavertree, Liverpool, on October 21st, eight vears, has been appointed chief electrical of Mr. Frank Bradford, the Liverpool repre­ and mechanical engineer to the Dalton Main sentative of Pirelli-General Cable Works, Ltd. Collieries and John Brown & Co.’s Collieries, Will.—Mr. J. E. Betts, chairman, Associated Rotherham. This year Mr. Muirhead is Electrical Industries Group Purchasing Com­ president of the Midland Branch of the Associa­ mittee, left £23,645. 6 3 0 E l e c t r ic a l R e v ie w Novem ber 2, 1945 CORltESPOXUEXCE Letters should bear the writers' names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents' opinions.

Registration of Contractors This means that a relay which is set to trip at 125 per cent, may not operate until rM^HE article in the N .R .E .E C . by its the current has reached a value o f 137-5 vice-chairman Mr. A. EE Dykes per cent. These figures are in accordance (Electrical Review, October 19th) is timely for war reactions favour the unscrupulous with B.S. 587, while B.S. 142 gives a figure o f 130 per cent, as the tripping value. W e and while skilled labour is mis-directed and would suggest that over-current relays standards lowered, the quality of installations should be matched to the thermal suffers. characteristics o f the motor, so that they will F o r varied reasons the industry and public operate when a limiting safe temperature is are disinclined to weigh the implications of reached by the motor. N o further restarts the schemes suggested to check increase of are then safely possible until a cooling period bad work. But we have in being a wide­ spread, workable, economical, voluntary has elapsed. W ith .reference to single-phasing and organisation for better wiring—sponsored delta-wound motors, the difficulty of obtain­ by the I.E .E . and supported for twenty-one ing protection with normal over-current years by over a thousand o f the best con­ tractors and their employees. They do relays can be easily overcome where star- disservice to the industry' who discredit the delta starting is employed, by connecting improvement efforts of the National Register the relay coils in series with the motor which is an independent technical foundation windings so that they deal with the current to guide the installer and guard the consumer. which passes through the motor windings Fierce competition in places where wiring and not only with the line current, which is regulations are derided caused a few with­ the case when they are fitted in the accepted drawals from the Register and some expected standard star-delta starter connections. There more direct support from their supply and is no doubt that in open-phase fault con­ local authorities. But, after all, those who ditions it is desirable for the motor stator would maintain their principles must exert winding to be star-connected, because this their own powers and not depend on out­ is intrinsically safer than the delta method. siders’ favour. Firms on the Register should Chester. P. J. S h ip t o n and A . G . S h r e e v e , be its chief unpaid publicity agents, although Cantie Switches & Brookhirst the central body could assist by giving more Switchgear, Ltd. information about its good work and purpose. Turkish Requirements It is to be hoped that M r. Dykes’s state­ ments evoke criticism for, as he suggests, free WN a “ Review of Commercial Conditions in Turkey ” produced by the Department of discussion is the healthy way to get results. Overseas Trade (Stationery Office, Is.) it is Edinburgh. D . S. M u n r o . stated that opportunities should occur for the supply of capital goods in connection with Motor Protection various public utility schemes which have » ■ TE read with interest the article by already been commenced or are planned. ■ * Mr. D. T. Evans dealing with electric Among these are paper, cellulose, chlorine and cement factories. Contracts for these motor maintenance published in your works were all awarded in the first instance to issue of October 19th. German firms but progress has been held up W e are in agreement regarding the necessity owing to the inability of the contractors to supply for discrimination between short-circuit and the necessary electrical equipment, cables, etc., overload protection, but we feel that there is and the question whether Germany will now be one point which has not always been able to supply is, as yet, uncertain. Work on appreciated regarding the setting of overload ■ the construction of the Catalagzi power station, relays, and this is that, according to B.S. the contract for which was awarded to a United Kingdom company (Metropolitan-Vickers) in Specifications, an overload relay has a 1940, is due to be resumed as soon as possible, margin of operation of 10 per cent, above or and extensive electric and hydro-electric under­ below its setting. takings are under consideration. Novem ber 2, 1945 E l e c t r ic a l R e v ie w 631 Newport’s Fiftieth Anniversary Rapid Expansion in Recent Years

4VN October 13th Newport (Mon.) celebrated To supply demands for electricity outside the the fiftieth anniversary of the commence­ borough an Extension Special Order was ment of public electricity supply by a luncheon obtained in 1922. Numerous extensions have given by the Electricity Committee to members been carried out at the East station, which is of the Council and staff, and a few other friends now one of the selected stations and will by associated with the undertaking. Afterwards a 1947 have a capacity of 90,000 kW. In 1928 ■te visit was paid to the power station where there the Llanarth Street works ceased to operate as a I

A R ’S stimulating effect upon electricity members of B.E.A.M.A. have made an consumption is clearly demonstrated by advance of 50 per cent, in their pre-war aW statement prepared by the Electricity Com­ prices of goods listed in 1939. Non- missioners giving the month-by-month output B .E .A .M .A . members have generally followed during the whole of the war period. The suit, the Central Price Regulation Com­ annual totals show fairly steady progress mittee having been frequently consulted in from 24-4 million kW h in 1938 to 38-4 cases of doubt. Fo r entirely new apparatus, million last year. The monthly peak was for which no previous or comparable prices reached in January last (4-2 million kW h) are available, manufacturers are also taking but since then there has been a decline as advantage of the facilities offered by the compared with 1944. No doubt this very Committee for approving fair prices. There slight relief will be welcome to the supply is no compulsion to refer matters of price to authorities in present circumstances but the the Committee but it is a safeguard worth respite can only be temporary, and all the taking. Should complaints of overcharging plant now under construction will be loaded be made, prices approved by the Committee up almost as soon as it is installed. would be automatically upheld; prices not * * * so approved would call for an investigation into the manufacturers’ method of pricing A Sunday paper has informed its readers and perhaps legal action. In any case that during next winter “ electricity cuts are complaints regarding overcharging for elec­ officially regarded as essential ” but cuts in trical apparatus are almost non-existent gas supplies are unlikely, reliance being and are likely to become rarer still as larger placed upon reduced pressure. I do not supplies become available and competition know who the “ official ” was who imparted gets going again. this pessimistic view, but I do know that the » * * officials best acquainted with the matter hope that “ load-shedding ” (to adopt the According to a note in last week’s Electrical official euphemism) may not be necessary Review, tenants of council houses at Silsden although precautions should be taken by may install electricity at their own expense supply authorities to explain the necessity for all purposes except clothes washing, should it be forced on them. I am aware of cookers or grillers and fires. The Gas and the continuing difficulties of the coal situation W ater Committee has “ considered the effect but, in common with the rest of the public, of the use of electricity in Council houses on I am getting a little tired of being promised the finances of the gas undertaking and has something worse all the time. decided to raise no objection to the installa­ * * * tion of electricity for lighting purposes.” This is unbelievable kindness of heart on Two major considerations seem to be the part of the Committee, but is it sure of its involved in the lifting of the purchase tax ground ? from cooking, heating and other domestic * * * apparatus. In the first place the cost of Sentiments with which I am in entire equipping new houses will be appreciably agreement were expressed by M r. G. P. lower (although Government-sponsored Dixon, the Colchester borough electrical schemes already escaped the tax); secondly it engineer at a ratepayers’ meeting last week. will put a different aspect upon hire-purchase He said that he hoped reorganisation would schemes. E.D .A . found by means of a not be the end of municipal supply. There questionnaire addressed to its members that were many rumours of nationalisation or while purchase tax was not likely to cause a régionalisation, but he felt that the vital general holding-up of hire and hire-purchase necessity for electricity in the post-war world schemes, many authorities hesitated to go could not wait while a perfect solution to the all out because of it. The disappearance ownership problem was sought: they had to of the tax will have a stimulating effect upon get on with the job. A ll the same it is difficult these schemes— when sufficient appliances to get on with any job with the spectre of become available. possible extinction in the background. * * * * * * Several domestic electrical appliance manu­ In announcing that electric lighting is facturers I have met recently seem to be to be installed in Biggleswade Council rather hazy as to the question of price control houses, the tenants repaying the cost at the in relation to their products. Briefly the rate of 6d. per week, the Star headed its note position is this. W ith the approval of the “ Time Marches On ” and ever since I read it Central Price Regulation Committee, I have been wondering why.— R E F L E C T O R . H, Novem ber 2, 1945 E lectrical Review 633 Willow Holme Power Station Extensions to Generating Plant at Carlisle

S part of the war programme for provided by two constant-speed damper- A providing generating plant in the controlled fans driven by 17-HP motors. west of Great Britain, the capacity of Willow Flue gases pass to a 250-ft. brick chimney. Holme power station of the City of Carlisle Soot blowers on the first two boilers are was increased from 26,150 k W to 86,150 manually operated, and the others automatic. kW. Directions were issued in M ay, 1940, Principal temperatures in deg. F. for normal by the Central Electricity Board for the and maximum boiler ratings are as follows:— installation of the first 30,000-kW unit of Feed, 320,336. Gases, leaving boiler, 722, the extension, which was running by January, 762; leaving economiser, 418,456; leaving 1943, and two years later for a second unit, air heater, 250, 275. Air, entering air heater, the whole 60,000 k W being in service in 80, 80; leaving air heater, 282, 299. The January of this year. amount of coal of 11,000 B T h U per lb. All buildings are of reinforced concrete designed to be burned per sq. ft. of grate and are erected on concrete foundations, area is 36-4 lb. at economic rating and 45-5 without piling, on ground consisting of lb. at m.c.r. with C O 2 at boiler exit of 13-75 deposited sand and earth, the general surface per cent. level being +33 o.d. In the boiler house are Coal is received from railway sidings five tri-drum stoker-fired boilers with a capable of dealing with the requirements normal duty individually of 120,000 lb. per of a 120,000-kW station by means of 30-ton hr. (maximum 150,000 lb.) and steam tipplers of the side-emptying type supplying conditions of 625 lb. per sq. in. and 840 a main hopper which allows coal to gravitate deg. F. Furnace walls are water-cooled at on to a rotary feed table for the first section sides and front and are refractory with of plant and on to belt feeders for the second. arches at the back. Arrangements have been Three belt conveyors of 100 tons per hr. made for refiring the grit from the écono­ miser hoppers. Each î un boiler has one multi­ loop superheater with primary and secondary Hi: sections ; steam tem­ perature is controlled 1 between 90,000 and T he n e w 30,000 k W se ts in the W illow Holme station of the CarlisleCorporation

150,000 lb. per hr. by an automatic air- operated attemperator. Two induced-draught fans' in conjunction with secondary grit cyclones and two forced-draught fans are installed per boiler, the former driven by 112-HP squirrel-cage capacity and three of 200 tons take the coal motors and the latter by 37-HP motors of to five 350-ton bunkers in the boiler house the same type; fan regulation in both cases or to the coal store (40,000 tons at 15-ft. is by means of hydraulic Couplings fitted depth) whence it is spread by a drag scraper. with scoop control remote-operated auto­ Ash and grit are discharged from the stokers matically or manually. Secondary air is and secondary cyclones via three water 634 E l e c t r ic a l R e v ie w Novem ber 2, 1945 troughs into a 100-ton pump, whence it is alternator has been installed. Considerable grabbed into lorries. The ash plant is rated use has been made of Pyrotenax cable for the at 100 tons per hr. wiring of the station auxiliaries and lighting. The 3,000-RPM turbines of both 30,000 Rural Work Commended k W generating sets (24,000 k W economic rating) are of the two-cylinder reaction A t a luncheon held on October 25th Mr. type and receive steam at 600 lb. per sq. in. J. Nimmo (Electricity Commissioner) com­ and 825 deg. F. Low-pressure steam is mending the Carlisle undertaking on its bled from four stages, two connections being electrical development in rural areas, which to low-pressure feed-water heaters and two had previously been referred to by Mr. G. C. Milne (borough electrical engineer, jJ to high-pressure heaters on the discharge 2« side of the feed pumps. There are five of Lancaster), regretted that there was no labour the latter— three 450-HP electric and two available at present to carry the scheme to conclusion. Ele deprecated the loose talk steam— rated at 30,000 gal. per hr. If] The l.p. cylinder of each turbine is of the about rural electrification in Great Britain, double flow construction receiving steam which could bear comparison with that of Jtil at the centre and exhausting to two condensers any other country. But for the war there 5ÈS, with a combined duty of 216,864 lb. per hr. would by now have been very little left giving a vacuum of 28-9 in. (bar. 30 in. hg.) outstanding. with 26,300 gal. per min. of cooling water M r. J. R . Potts (chairman, electricity at 55 deg. F. Circulating water is taken committee) said that Carlisle station was the only selected station between Lancaster and from the River Eden by means of four two- sift stage axial flow pumps with individual Kilm arnock. Even if local interests suffered, III« capacities of 13,750 gal. per min. against a changes in electrical organisation that would lin static head of 24 ft. and friction load of be in the national interest would be welcomed. 22-5 ft. with syphonic assistance of 75 per M r. A. C. Thirtle (city electrical engineer) ä'H cent, efficiency; these are driven by 195-HP stated that the extended station had a vertical squirrel-cage motors. capacity for generating 360 million kWh per annum and was one of the fifty-six stations Generator Arrangements in the country which generated more than Generation is at 11-kV, ^stepped up to 200 million k W h a year and together supplied 33 kV, at which switching takes place. 85 per cent, of the total requirements. Of lilis ’Lui The m.c.r. of the alternators is 37,500 kV A the 289 million k W h output for the year ending September 30th, 1945, M r. Arnott «sill at 0- 8 power factor and the inherent reactance * 1 (C .E.B .) said that only 18- 5 per cent, had been 24-3 per cent. Pilot and main exciters are slim mounted on extensions to the rotor shaft. used in Carlisle, the remainder having been Both alternators are controlled by metal- exported to the grid. clad 800-A 750-MVA circuit-breakers, one The extension has involved a capital of which is a duplicate-busbar type and the outlay of approximately £2,250,000. It was second a single-busbar design with single designed and supervised by M r. C. W . Salt EH) break on each of the completely separated (city electrical engineer until October, 1944, dcaki liłlK! phases and containing 78 gal. of oil as against when on his retirement he was succeeded by I! iiju the 250 gal. of the other. Mr. A. C. Thirtle) and his staff in collabora­ 3ft Bus-bar protection has been provided for tion with the consulting engineers, Kennedy E lohn all the new high-voltage switchgear. Station and Donkin. auxiliaries are normally operated from Suppliers of Plant 2.000-kVA 11,000/400-V transformers The principal contractors were: Stirling ¿ft supplied from old and new 11-kV switch­ Boiler Co., Ltd., boiler plant; British boards. In view of different rupturing Thomson-Houston Co., Ltd., turbine plant, capacities of the old and new 11-kV circuit- main switchgear, transformers, reactors, ftl motors, soot-blower (automatic control); tib breakers, interconnection is through English Electric Co., main double-busbar 20.000-kVA cast-in-concrete reactors with a switchgear ; British Insulated Cables, Ltd., reactance of 8 per cent, on 20 MVA. The main cable work ; David Thomson & Sons, Ltd., circulating-water piping, power wiring sfc 400-V, 3,000- and 800-A auxiliary switchgear (Pyrotenax), heating and lighting; Atlas ttio is of the air-break metal-clad type. Most Sprinkler Co., fire-fighting plant; Sturtevant !ioii of the motors are direct-on started with D C Engineering Co., Ltd., vacuum-cleaning plant; éf latched-in contactors and automatic reclosure. John Laing & Son, Ltd., civil engineering. Among the sub-contractors were the As a stand-by a 750-kW 400-V turbo­ *t following: International ¿Combustion, Ltd., m November 2, 1945 E l e c t r ic a l .R e v ie w 635

stokers, ash-handling and scraper plant; and he had difficulty in finding any justification Babcock & Wilcox, Ltd., coal-handling plant for nationalisation. Dividends ancb prices were and soot-blowers ; Mavor & Coulson, Ltd., already regulated, or the power had already conveyor belt idlers; Goodyear Rubber Co., been obtained to regulate them. Every single Ltd., conveyor belts; E. Green & Son, Ltd., operation of both industries required prior gilled-tube economisers; James Howden & Co., Ltd., air heaters; Davidson & Co., Ltd., sanction or approval by some Department fans and dust-extraction plant; Brookhirst or other. Switchgear, Ltd., motor starters; Aiton & He foresaw a complication immediately the Co., Ltd., high-pressure pipework; Hopkin- mining industry was nationalised. The Govern­ sons, Ltd., valves and mountings; G. & J. ment would then be the owners of the house Weir, Ltd., feed pumps; Copes Regulators, coal market of the coal trade and the State Ltd., feed regulators; Cambridge Instrument Co., Ltd., Bailey Meters & Control. Ltd., would therefore become competitors straight James Gordon & Co., Ltd., Geo. Kent & away with the gas and electricity industries for Co., Ltd., and W. Crockett & Co., Ltd., domestic heating. At the same time, the State instruments; Electroflo Meters Co., Ltd., would be the dictators of the price which gas and automatic boiler control and instruments ; electricity undertakings would have to pay for W. & T. Avery, Ltd., weighbridges ; Hydraulic their coal. Coupling & Engineering Co., Ltd., fan couplings; Hewittic Electric Co., Ltd., rectifiers for stoker drive; Liptak Furnace Boiler Cleaning Arches, Ltd., refractory rear arches; Mirrlees Availability Committee’s Bulletin Watson Co., Ltd., condensing plant, feed heaters, evaporators, service and screen- ITH more onerous operating conditions, washing and c.w. pumps and pipework; J. deposits on external' heating surfaces Blakeborough & Sons, Ltd., screens and of boilers have increased in quantity and changed valves; Alfa-Laval Co., Ltd., turbine-oil in nature so as to render inadequate most purifiers; Drayton Regulator & Instrument former cleaning practice. A new publication by Co., Ltd., desuperheaters; Candy Filter Co., Ltd., water conditioning ; Tudor Accumulator the Boiler Availability Committee (Bulletin Co., accumulators; Clifford & Snell, Ltd., M C/131, 43 pages, 17 fig.) is based on experience “ Loudaphone,” “ Ordasign ” and “ Synchro- gained with new methods of cleaning modern dial ” equipments. stoker-fired plant as well as with the systematic and thorough application of existing cleaning methods. Future of Fuel Industry The great increase in steaming hours gained by the thorough cleaning of surfaces down to Sir John Dalton’s Views the metal and the reduction of time obtained N his election as president of the Fuel by cleaning before the gas passages are choked O Luncheon Club last week Sir John Dalton are both clearly demonstrated. A considerable spoke of the far-reaching Government proposals amount of cleaning can be carried out by affecting the fuel industries. He stated that the soot-blowing and water-lancing while boilers are capital involved in the mining, gas and electricity on load and the technique of applying these industries was over £ 1,000 millions and the processes to the various sections of the plant number of people directly employed was over is described. Water-lancing was originally 1,000,000. Any change of ownership or introduced by the Committee during the war operation would, therefore, be an enterprise on for cleaning superheaters, but its use has recently an enormous scale which could not be done in a been extended to tubes. For occasional or hurry unless the risk was taken of doing injustice emergency use water sluicing may be employed. to a large section of the public or, alternatively, The most satisfactory ways of cleaning doing injustice to the future stability of the economisers and air heaters are also by wet industries. processes, which are described. Sir John stated that the average holding of Ten appendices give detailed illustrated stock by shareholders in gas and electricity descriptions of equipment and individual companies was of the order of £200 so that the applications of these cleaning methods at bulk of holdings were in the hands of the small power stations, together with the steaming man. Holdings over £2,000 represented only hours thereby obtained. It is emphasised that about 2 per cent, of the whole issued capital the cleaning of boilers should be systematically of the companies. controlled and regularly inspected by competent He thought that nobody could challenge the staff. principle that where any industry was nation­ The Boiler Availability' Committee is com­ wide and was completely independent, there posed of representatives of supply undertakings must then be possibilities of the public interest owning power stations, the Central Electricity being endangered and any Government would Board, boiler makers and research organisations. be bound to control that industry in some way Applications for copies of the Bulletin, other or other. The difficulty was to apply this than those required for stations operated under principle to the fuel industries. There were no the Central Electricity Board, should be made other industries in the country so exactingly to the chief engineers of the boiler makers controlled as the gas and electricity industries, concerned. 636 E l e c t r ic a l R e v ie w Novem ber 2, 1945 COMMERCE and INDUSTRY B.E.T.R.O. Begins Services. Queen at Women’s Exhibition. (lOi Export Research company were pioneers) and submarine warfare sit! equipment. Help as sub-contractors was given {¡SPEA K IN G at a meeting of the British Export by many local firms, including the engineering Trade Research Organisation on October department of the company’s oldest customer 24th, Mr. A. Ethell, director of administration, (now Reckitt & Colman, Ltd.), whose works said that membership had reached 205. Now were electrified by Mr. W. H. Scott in about I# that they could offer a concrete service it was 1883. .jfc intended to make a drive for increased member­ ;iiil ship. An intelligence service was now available Export of Surplus Machine Tools fik and at the beginning of 1946 B.E.T.R.O. would It has been a condition of the Government's jŚŁ be able to carry out specific research on in­ 1 structions from members. The purposes of the machine tool disposal scheme that Government f t surplus machine tools are not exported. The meeting were, first, to ask members to promote :i,t the value of the organisation among their object of this has been to give British industry a friends in industry and, secondly, to tell the first chance to re-equip with the best surplus management what sort of service they required tools. The Machine Tool Control now («M announces that, as from November 1st, Govern­ and what problems allied to market research -i ik needed ready solution. ment surplus used and unused machine tools Among the points raised in a subsequent which have been on offer to British industry through the disposal scheme for four months ¡¡stel general discussion were the investigation of in i “ credit-worthiness ” of importing agencies; are available for export. The restriction on the export of American machine tools acquired ¿ ¡i the use of existing overseas organisations as Ht B.E.T.R.O. agents; the confidential nature of under Lend-Lease arrangements remains in specific research; investigation of transport force. ils» costs; the position of export groups; the use of British Standards; and the importance of Queen Visits Electrical Exhibition at design and packaging. On Thursday last week Her Majesty the Queen (Of Í paid a visit to the Women’s Electrical Exhibition W«!l I.M.E.A. and Outlets at Dorland Hall, Regent Street, London. She was accompanied in her inspection of the i H# In the October I.M.E.A. Journal reference is exhibits by the Dowager Lady Swaythling at « made to the statement regarding the standard­ isation of domestic plugs and sockets issued recently by the British Standards Institution and it is stated that a letter on the matter has been sent to all engineer representatives of the Incorporated Municipal Electrical Association. This briefly reviews the recent history of the subject and states that the Council of the I.M .E.A. is strongly opposed to the proposed up-rating of the present standard design because it would greatly increase contact heating troubles and would expose existing 5-A circuit wiring to dangerous overheating by making it readily possible to load it up to 13A. It is suggested that those members who are subscribers to the B.S.I. should individually protest to that body against its proposals. The Council is seeking an interview with the B.S.I. to put forward the Association’s views. Norwich Thanksgiving Week In connection with Norwich Thanksgiving Week, an exhibition of local firms’ contributions to the war effort was held in the setting of the Mr. V. W . Dale explaining'one of the displays to Norman Castle. A prominent part was taken by Her Majesty the Queen at the W om en’s Electri­ Laurence, Scott & Electromotors, Ltd., included cal Exhibition in the company’s exhibit being a skiatron radar (president of the Electrical Association for display set; a radar target indication unit and Women), Miss Caroline Haslett (director, radar range matching receiver; a Mark VII E-A.W.), Mr. V. W. Dale (general manager, plotting table; ap E.M. elevation receiver; a E.D.A.), Capt. J. M. Donaldson (chairman, special quick-action change-over switch for E.D A. Exhibition Committee), Mr. H. J. controlling an alternative source of supply Randall (vice-chairman, E.D.A. Council), Mrs. to essential electrical apparatus on warships; M. B Jackson (chairman, E.A.W.), Alderman and various other types of control gear. A Mrs. Gregory (E.A.W.) and Miss F. E. Jackson Mark VI rangefinder director was shown in (treasurer, E.A.W .). operation. The heavier exhibits were illustrated Her Majesty was particularly interested in by photographs, the latter including a submarine the planned kitchen and its attractive colour main motor (in the manufacture of which the scheme. She said that the royal kitchens Novem ber 2, 1945 ELECTRICAL REVIEW 6 37 seemed out of date by comparison and she box. Since its introduction in 1941 at Birming­ hoped that such equipment might be used when ham’s Warships Week, it has been shown at new houses were built on the royal estates. Wolverhampton, Worcester, Dudley, Tipton, She also hoped that electric washing machines Solihull, Halesowen, Leicester and Coventry. would soon be available for every housewife, Surrounding the torpedo are other war for whom washing day was the most tiring products such as sea markers, smoke floats, day of the week. Looking at the educational identification flares, photographic flashes, 25-lb. and training sections of the exhibition, the and 7 -lb. practice bombs, bulkhead lamps, Queen expressed the opinion that there was a Admiralty stockpots, etc., together with a few great career open to women in electricity not only in the home but in such spheres as nursing and medical electricity. On the previous day H.R.H. Princess Royal also visited the exhibition, spending a con­ siderable time inspecting the domestic side of the display and the A.T.S. exhibits. Contract Correction In the “ Contracts in Prospect ” section of our issue of October 12th, it was reported that new offices were being erected at Wallsend for the Parsons Marine Steam Turbine Co. Messrs. R. T. James & Partners, whose name was mentioned, inform us that the Bulpitt mobile display body concerned is the Parsons & Marine Engineering Turbine Research & of the company’s peacetime products, “ Swan Development Association and not the company Brand ” electric kettles, coffee percolators, named. They ¡are concerned as consulting cooking utensils, tea sets, etc. The difficulties engineers with the design of the civil engineering of resuming production of the latter are side only of works for research and testing of increased by the fact that the electrical depart­ marine machinery. ment was completely destroyed by enemy action in 1940, so that it will be some time District Heating Suggested for London yet before production can reach its former level. A proposal that the City of London Cor­ poration should investigate the possibilities of Arc Welding Competition district heating was to be made by a member at a meeting of the Court of Common Council A competition in arc welding is being yesterday. organised by the Arcweld Research Construc­ tion & Supply Co., 68, Bridle Road, Eastcote, Proposed New Factories Pinner, Middlesex, from whom full particulars can be obtained. It is reported that the Electro Dynamic Construction Co., Ltd., proposes to erect a Lamp Showcards new factory at Bridgwater, and that a factory is also to be built in the same district by Crypton In view of the emergency situation and the Equipment, Ltd. The latter works will employ shortage of materials, John Ismay & Sons, Ltd., about 400 people and it is hoped to have it in made no effort during the war to produce lamp operation by next summer. publicity matter. Now, however, they are making available two attractive showcards Travellers’ Benevolent Institution relating to Ismay and Briton lamps. These have been made from window transfers in The annual court of governors of the Com­ stock before the war mounted on “ unrationed ” mercial Travellers’ Benevolent Institution will cards. be held at the London offices of the Institution 4b, Frederick’s Place, E.C.2, on December Diesel-Electric Locomotives for Egypt 28th at noon. The Egyptian State Railways have ordered from the English Electric Co., Ltd., twenty- Bulpitt Display Aids War Charities seven Diesel-electric locomotives, twelve for War charities have benefited by over £3,000 general service, including express passeng;r by a mobile display which Mr. T. N. Dunn, duties, and fifteen for shunting. Weighing service manager of Bulpitt & Sons, Ltd., has 48 tons, the shunting locomotives are powered arranged to draw attention to the company’s by 350-BHP Diesel engines, and a trailing load manufacturing activities in both war and peace. of 1,040 tons can be shunted on the level. Mounted on a lorry the exhibit has as its central The general service locomotives, weighing 116 feature a 2 1 -in. torpedo, which has been made tons and with Diesel engines developing 1,600 up with a standard warhead and afterbody, BHP attain a maximum speed of 75 MPH with a dummy centre portion forming a money­ ■ with an express passenger train. They have six 6 3 8 • Electrical Review N ovem ber 1, 1945

traction motors driving two three-axle bogies, chairman) and Mr. T. W. Heather (director and the control scheme provides for multiple and sales manager). Technical specialists of unit working. There is a driving position at the company have combined to give the courses each end of the cab. Further orders are in which will cover a period of about three months. hand for the Great Western Railway and for In addition there are five courses covering the Federated Malay States. simple and more advanced courses in electricity and magnetism, book-keeping and accountancy, New Supply Department shorthand and typewriting and arrangements also will be made for special training at technical The Prime Minister announced on Monday colleges and institutes. that it was proposed to amalgamate the already combined Ministries of Supply and Aircraft Welsh Girls Learn Lamp-making Production into a new Supply Department which would furnish supplies and carry out On Monday last twenty-six girls arrived research, design and development for both from Merthyr Tydfil, South Wales, to spend the military and civilian purposes. The Board next few weeks learning electric lamp making of Trade would remain responsible for general in the Edmonton and Tottenham factories questions of industrial and commercial policy of Thorn Electrical Industries, Ltd. They are and so far as these questions were related to the forerunners of other parties of girls from engineering the Ministries of Supply and South Wales who will ultimately form the Aircraft Production would work in close co­ nucleus of the staff of the new factory being operation with the Board. built for the company at Merthyr Tydfil— the The Ministry of Production had already first electric lamp factory in South Wales. been merged in the Board of Trade although for formal reasons it was at present necessary Trade Announcements to retain two separate Votes. The Raw Materials On October 27th, Sidney G. Jones, Ltd., Department and the Raw Materials Controls returned to London to offices at 8, Balham of the Ministry of Supply were transferred to Hill, S.W.12 (telephone: Battersea 0266). the Board of Trade as from that day (Monday) Craig & Derricott, Ltd., have moved to but the Iron and Steel, Non-Ferrous Metals Royal Works, Sutton Coldfield, near Bir­ and Light Metal Controls would remain with mingham (Telephone: Sutton 2547). the Ministries of Supply and Aircraft Produc­ tion. Atomic Energy Research TRADE MARKS HE following applications have been made It was announced by Mr. Attlee on Monday T for trade marks. Objections may be entered that a research and experimental establishment within a month from October 24th :—- covering all aspects of the use of atomic energy Pam . N o . 635,357, Class 9. Radio and was to be set up at Harwell airfield, near Didcot. television apparatus; sound recording, repro­ Responsibility for research in this subject was ducing and amplifying apparatus; public to be transferred from the Department of address apparatus; batteries and accumulators; Scientific and Industrial Research to the high-frequency oscillation generators; and parts. Ministry of Supply but the D.S.I.R. would have —Pamphonic Reproducers, Ltd., Radio Works, representation on the committees dealing with St. Andrew’s Road, Cambridge. atomic energy. Paraplast. No. 6 3 4 ,8 0 6 , Class 9 . Electric cables and conductors.—Para-Plastics, Ltd., Chinese Engineers in Britain 3 2 9 , High Holborn, London, W .C.l. Sixty Chinese engineering post-graduates N i t r o g o l . No. 635,798, Class 9 . Electric who are to be trained in British engineering condensers, resistances, wave filters, trans­ works, under the scheme arranged by the formers, rectifiers, induction coils, relays, Federation of British Industries in conjunction cables and flexibles, dry cells, batteries and with the Chinese Government, were welcomed accumulators, insulation testers, electrically in London last week by Sir Frank Gill, chairman operated thermometers, thermostats, rheostats of the F.B.I. China Committee. These and indicating and recording instruments.— apprentices have been allotted to thirty engineer­ Dubilier Condenser Co. (1925), Ltd., Ducon ing works in various parts of Great Britain, Works, Victoria Road, North Acton, including London, Bristol and Glasgow. Ninety London, W.3. engineering students have already been trained under the F.B.I. scheme and more than half are back in China helping the reconstruction INFORMATION and development of their country. The scheme has been in operation for the past fifteen years. DEPARTMENT E N E R A L inquiries from readers relating G.E.C. Refresher Courses G to sources of electrical goods, makers’ addresses, etc., are replied to by our Information To prepare service men for their return Department through the post. Inquiries should to civil life the General Electric Co., Ltd., be accompanied by a stamped addressed some time ago devised a series of refresher envelope. courses to help men and women from the Our extensive records enable us to reply to Forces to adapt themselves to their new most queries, but occasionally we ask for our environment. The scheme was officially in­ readers’ assistance in tracing names and augurated on October 1st when seventy-five addresses not known to us. We should be glad men and women of the Magnet House staff, to have such information regarding the who recently returned from the Services, were following :—- welcomed back by Mr. Leslie Gamage (vice­ Makers’ name and address for E/ZEE welders November 2, 1945 E l e c t r ic a l R e v ie w 639

»^c'va\isis At toi» 'r«Hr; I l ouselioltl Appl iances ® COVf ^ elects Board of Trade Survey ABLES have been prepared by the Board for the Services until towards the end of 1946. T of Trade showing the volume of consumer It is stressed that the urgent need for electrical goods supplied to the home civilian market appliances is fully understood and appreciated during the war period; in some cases the com­ by the manufacturers, who are only too anxious parative figures for 1937 are given. The term to “ deliver the goods ” as soon as possible. girls it- s’ tospj«i E lectrical Appliances Supplied to the Home M arket : lamp m (Annual rate of production in thousands) mam fa. Boilers, Fires, !*, ft Cookers hotplates, W ater Im m er­ Vacuum Bed Blankets grillers, radiators, heaterssion Kettles Irons cleanerswarmers and ‘lely foil' 3 kW and etc. etc. heaters padsOver 1 fact» k 3 kW under 'yr Tvfi- 1937 250 _ 1,250 __ 350 1,250 400 ' _ uthWala 1943 101 6-5 0-72 58 4-3 15 28 92 0-24 4 0 4-8 1944 15*9 6-4 3-3 56 5-8 26 65 177 0-71 2-8 6-8 lents Jan.- June, 109 315 28 3-9 15 5 at !, 1945 29-9 9-9 17-4 219 10 6 53 sea 02(i|, iave moïÿ eld, neai; “ home civilian market ” covers all goods pro­ While these difficulties prevail and the ¡5471. duced which were not made for export or for prospect in regard to the availability of labour contracts from the British Government. is so uncertain, it is not possible for manu­ Household electrical goods form the subject of facturers to assess their costs sufficiently IKS one table and from this we have extracted the accurately to forecast the selling prices of be beat accompanying information. It should be noted apparatus of new design. smajbesd that the figures indicate the annual rate of Ml- production. P.E.P. Survey of Future Market In our issue of March 9th last we reviewed ecotding, B.E.A.M.A. Statement a broadsheet on “ Household Appliances ” hi issued by P.E.P. (Political and Economic i In the course of a statement on the appliance ■aiorstaal shortage, B.E.A.M .A. says that the public has Planning, 16, Queen Anne’s Gate, S.W.l). L, Radio Vi already been advised that for some time it This was a summary of a report submitted to must be satisfied, in the main, with electric the Board of Trade which is now published in tes!. cookers, water heaters, refrigerators, washing full. (“ Report on the Market for Household machines and other domestic electrical Appliances ” (398 pp.). Distributed by the V.C.l. appliances of pre-war design but, even so, after Oxford University Press, Amen House, E.C.4. ; ). Ed. complete stoppage of normal production for so Price 18s.). A very thorough survey is made in this I coils, long, some time must elapse before anything i battais! like the pre-war rate of output can be resumed, report of all aspects of the domestic equipment [cis, e W as the special plant installed during the war has field with a view to giving some guidance osuis, t o now to be dismantled and replaced. upon design and construction and some idea imtnisc The greatest problem of all is the dire shortage of the scope for the sale of appliances during it, Ltd. fc of the right kind of labour in every section of the next ten years, particular attention being North te the engineering industry. The electrical industry given to equipment suitable for the lower- is not only suffering severely itself from this income groups of the population. nation-wide problem, but in other industries, on In the first place a number of factors in­ which electrical manufacturers are largely fluencing demand are treated: they include dependent for supplies of parts, e.g., refractories such things as prices, lack of domestic help, I and castings, the labour problem is equally the probable tendency of women to remain in rates iis acute. Until there is a steady flow of suitable industry and the existence or absence of com­ gook ^ workers back to the industries concerned, the munal facilities for providing food, washing supply of electrical apparatus must lag behind clothes and so forth. Food preparation and cooking equipment of various kinds is compared. ted the growing demand for Home and export. Although the war is over, many Government Here it is contended that the practice of hiring is to rpl contracts of high priority, particularly for the out electric cookers has slowed up development. : ist In ‘ amenities for the Forces overseas, continue to A “ preferred ” design with a 2 cu. ft. oven occupy considerable capacity in the industry; could, it is said, be produced at £9 (at 1939 in this category must be included the production prices) with an output of 20,000. Accurate capacity of'the refrigeration industry which is figures are not easily obtainable but it is esti­ iEmld likely to be engaged on urgent overseas needs mated that there were 1 6 million electric cookers 6 4 0 E l e c t r ic a l R e v ie w N ovem ber 2, 1945

(including “ breakfast” cookers— 13 per cent, there is an unjustifiable cost comparison of the total) in use in 1939; and number of gas between electric washing machines and “ simple cookers is said to have been 8-5 million. The gas wash boilers.” As regards vacuum cleaners probable post-war sales are put at 320,000- it is surprising to learn that the number in 360,000 a year for electric cookers and 850,000 use was probably 300 per 1,000 wired homes; for gas cookers. a figure of 448 per 1,000 in considered to be The authors of the report found that neither attainable, giving an annual sale of 750,000 per gas nor electricity is considered to be entirely annum in the ten-year period. satisfactory for space heating; solid fuel fires are Refrigerators installed in 1939 are put at generally preferred but the demand in the first 200,000 electric and 90,000 gas and it is thought post-war decade for gas and electric fires that there could be sales of 840,000- electric (bracketed in this instance) is put at about 9\ models at a reasonable price during the post­ million. The extra cost of electricity for water war decade, 210,000 (including replacements). heating is given prominence and the require­ It is impossible in the space available to give ments for the first post-war decade are put at an adequate account of the contents of this only 130,000 new and 420,000 replacement admirable result of an enormous amount of heaters as compared with totals of 5-2 million research. Many of the conclusions may be solid fuel and nearly 2 million gas appliances. contestable but the value of the information thus In the section on clothes washing equipment gathered together is undeniable. The Interim IIucig*et Purchase Tax Concessions tfljE N E R A L particulars of the interim Budget storage water heaters; wash boilers and wash introduced by the Chancellor of coppers. (2) Parts of such stoves, grates, the Exchequer last week have appeared in the etc. (3) Domestic refrigerators. public press. The principal features are the It is noted that the exempt appliances include restoration of some of the pre-war income tax independent central heating and hot water allowances, the reduction of the standard rate supply boilers heated by gas, solid fuel or liquid to 9s. in the £, and certain concessions to the fuel; single and multi-point geysers; circulator lower-income groups all to take effect in April water heaters; calorifiers; heated towel rails; next. The rate of excess profits duty is to be gas and electric fires; and panel and tubular reduced from 10 0 , to 60 per cent, as from room heaters. Articles which are not exempt January 1st and arrangements are to be made for include “ articles not themselves falling within the refund of 20 per cent, of the tax already paid, the terms of the exemption which incorporate as provided for in the Finance Act of 1941. components that would be exempt as separate The Chancellor said that the total amount to be articles, e.g., hollow-ware cooking utensils refunded was about £450 million but this was incorporating boiling rings; drying cabinets and subject to income tax which would reduce it to air-conditioning appliances incorporating con­ £225 or £230 millions. It was intended to vector heaters; washing machines incorporating impose conditions upon repayment to ensure wash boilers; ice cream machines.” Other that the money was “ ploughed back ” into non-exempted articles are electric kettles and business. The Inland Revenue authorities other culinary hollow-ware, whether fitted with would be given power to make interim repay­ heating elements or not; toasters; waffle ments pending the final settlement of the plates; coffee roasters; irons and ironing amounts due. Possible alternatives to E.P.T. machines; dish washers; bed warming are under consideration. appliances; curling tongs and heaters; hair The Income Tax Act, 1945, provided that dryers; radiant heat lamps, “ sun ” lamps, from an “ appointed day ” certain allowances ultra-violet lamps, infra-red generators and would be made in respect of capital expenditure similar apparatus. on certain industrial buildings, plant and It is proposed to include a provision in the machinery. It has been decided that the Finance Bill enabling buyers under purchases appointed day shall be April 6th next. made before October 24th to obtain the Mr. Dalton also announced the removal of benefit of this exemption if such benefit has the purchase tax from certain classes of house­ accrued to their suppliers. No rebate of tax hold equipment. A notice issued by the will be allowed on goods which were delivered Commissioners of Customs and Excise before October 24th by a registered person (No. 78D) gives details of the exemptions, under a taxable sale, or on goods which have which took effect on October 24th. The classes been appropriated by a registered person before affected are:—(1) Domestic cooking, space- that date to retail trade or other taxable purpose, heating and water-heating appliances of the e.g., office use or hire purchase. It is not open following descriptions: Stoves, grates, ranges to registered persons to take back goods from and fireplaces; boiling rings, grillers and hot­ retailers or from their own retail branches and plates; radiators and convectors; instantaneous claim a rebate of tax in respect of* them with ■fc water heaters, immersion water heaters and a view to their re-delivery free of tax. X 19AS November 2, 1945 E l e c t r ic a l R e v ie w 641 mi» Electricity Output Monthly Figures for War Period wired bos “siieitdi,, N the outbreak of the war the Electricity figures for the war years are shown in the otlidi, O Commissioners suspended the publica­ following table which also includes the figures tion of their monthly statements showing the for the last pre-war year. The figures for the .* R amount of electricity generated by authorised « is I , period October, 1944, to September, 1945, undertakers in Great Britain. The monthly are subject to revision:—

* Electricity Generated by Authorised Undertakers in Great Britain (in millions of kWh) M onth : »'Akk Kt 1938 1939 1940 1941 1942 1943 1944 1945 nnots utg January 2,382 2,704 3,018 3,145 3,616 3,437 3,712 4,174 February 2,145 2,334 2,658 2,725 3,323 3,075 3,594 3,295 March . 2,111 2,508 2,451 2,867 3,370 3,306 3,691 3,383 April 1,849 2,046 2,347 2,632 2,860 2,854 2,886 2,926 May 1,854 2,068 2,194 2,593 2,741 2,894 2,924 2,812 June 1,612 1,912 2,036 2,230 2,577 2,641 2,745 2,652 July 1,656 1.9I& 2,152 2,287 2,566 2,648 2,605 2,537 August . 1,679 1,885 2,076 2,320 2,461 2,645 2,606 2,474 September 1,868 1,897 2,056 2,480 2,675 2,932 2,919 2,707 October 2,195 2,225 2,450 2,858 2,976 3,248 3,332 November 2,346 2,350 2,559 2,993 3,186 3,522 3,597 ^ Sow, tt December 2,675 2,563 2,778 3,236 3,300 3,747 3,744 sots. S#®«® Cumulative for Year 24,373 26,409 28,776 32,369 35,654 36,951 38,354 s? ai tot i ¡.soEiHnl iRffl: aa Training* Cable Jointers laid mi- Five Year Apprenticeship Plan lick in opts H E organisation and varied activities of their own ideas by making joints which, ¡dvs ftliii T the Distribution Department of the upon completion, could be dissected and Sheffield Corporation were described in the examined. The relative abilities of men nempi a is inaugural address of M r . A. H a d d o c k a s thus became evident and opportunities to COO&t t drying caiiE chairman of the Sheffield Sub-Centre of the improve their skill kept them interested in taoipCBÉjl Institution of Electrical Engineers. their work. Dealing with the recruitment and training Preparation of extension plans and the machines." it of cable jointers M r. Haddock expressed the keeping of service records by the mains taré kaki: opinion that, in order to secure sufficient drawing office were described, as well as whether fiwdd numbers in future, electricity authorities would system operation for load regulation to toasters; t have to formulate an apprenticeship scheme best advantage, together with the com­ rons and is which would enable youths to commence pilation of adequate fault reports for monthly bed trade training immediately they left school. averaging and annual analysis. : md haw; Mr. Haddock’s concluding observation i, “ sin’ ll He suggested two years with installation inspectors and meter fixers, one year on sub­ was a reminder that most sections of the station work, one year on various kinds of industry were agreed that some reorganisa­ i provision i jointing and a final year actually working tion was desirable. It was time the industry under pué as a jointer’s mate. During the apprentice­ learned to settle its differences internally 1 to okffi ship trade-school instruction should be and to speak to its customers with a single such benen obtained on conductor jointing and soldering, voice. No rebate i application of insulation and plumbing. oh «ere deft All this should be given in a school forming P Joint Sciences Committee part of the electricity undertaking’s organisa­ At a meeting of the Association of Scientific tion. Keen apprentices would be free to Workers held recently it was resolved to set up a taxable p# secure evening school instruction on the Joint Sciences Committee, consisting of scientists It /s not® technical principles governing their work. from various fields, with the object of considering ck goods f High-voltage jointers in Sheffield returned the best ways in which natural and social 1 branch«1 scientists can be brought together to deal with to the school for periodical short refresher social problems, and to consider certain fields o f them ’ courses. They were encouraged to try out in which such work is of particular importance. 6 4 2 E l e c t r ic a l R e v i e w N ovem ber 2, 1945 Employees’ Tenancies Position Under the Rent Restriction Act jft* By F. E. Sugden, A.C.I.S., Barrister-at-Law : V :Ai CASE of far-reaching importance tenancy implied from the acceptance of ¡¡wr A recently occupied the attention of the rent by the respondents after the notice .¿j- Courts; it raised the matter of an employee to quit; (2) that the material time to be 3® living in his employer’s business premises considered was the date of the issue of the who left his employment and was asked to plaint {i.e., particulars of claim in the County give up possession of the premises to make Court) on M arch 20th; and (3) that at that %sit room for his successor. H e declined to do time the new employee had not entered this and the employers took legal action. into full-time employment. The final decision should considerably ¡bltti" clarify the position under the Rent and Rent or Mesne Profits ? ppCo Mortgage Interest Restrictions (Amend­ The Court disagreed on the point that the ment) Act, 1933. acceptance of rent after the notice to quit jfa-’ Briefly, the facts of the case were these:— created a new tenancy; the rent so accepted The defendant had been employed by the was mesne profits (i.e., not payment of plaintiffs at their factory and as an employee rent but a sum representing the amount of occupied, as a weekly tenant, a house rent which should have been paid during ¿is* belonging to the firm. In November, 1944, this period). The material date to be BjT the defendant’s employment with the plaintiffs considered was not that of the issue of the came to an end and a successor was engaged. plaint, but that of the hearing of the action. The new employee was not able to take The words “ some person engaged in his jinoii up work with the plaintiffs until April 16th, whole-time employment ” were said to be -3 ,£ 1945. The defendant remained in occupation deplorably ambiguous. In the expression of the house after November, 1944, paying “ engaged b y ” the word “ engaged” had rent weekly as before, and in February, 1945, an entirely different meaning from its meaning t * the plaintiffs served upon him a notice to in “ engaged in.” But whatever its exact f!snph quit. He refused to leave and proceedings meaning here, as the material time was the were taken by the plaintiffs for recovery of date of the trial on M ay 2nd and the new possession on the grounds that they required employee had been at work for the respon- Cmh the house for occupation as a residence for dents since A pril 16th, the decision of the atiaal a person engaged in their whole-time employ­ County Court Judge was right and the appeal ment within the meaning of paragraph (g) of the former tenant was dismissed. of the First Schedule of the Act of 1933. I f the defendant had only paid rent for tawu staying on at the premises after he had !&)■ County Court Judge’s Decision been dismissed a new tenancy would The County Court Judge held that the have been created, but wisely, from the plaintiffs were entitled to recover possession. employers’ point of view, they did not s of The tenant appealed against this decision under charge him rent, but after he had received f section 3 (1) of the above-mentioned A ct notice only claimed damages (or mesne which provides that “ no order or judgment profits) based on the amount from the date for the recovery of possession of any dwelling- when he last paid the rent until they sr; house to which the principal Acts apply or recovered possession. for the ejectment of a tenant therefrom shall This case stresses the need for a man :S1f- be made or given unless the Court considers occupying premises belonging to his it reasonable to make such an order or give employers to be sure of his terms of appoint- ís¡¡¡ such a judgment.” ment. The employers should make it clear ista The Court of Appeal in its judgment that the tenancy shall last only so long as the Uirt.- stated that the appellant had raised three emplovee is with them, at a specific rental; main contentions:— (1) that he was not immediately the appointment, for any reason 3 in occupation of the house in consequence whatsoever, comes to an end, the tenancy of his employment by the plaintiffs, as is terminated. This is one of the few cases site required by paragraph (g) (i) of the Schedule, where a “ sitting tenant ” is not protected by ,3" but was in occupation by virtue of a new the Rent Restriction Act. Novem ber 2, 1945 E l e c t r ic a l R e v ie w 643 ELECTRICITY SUPPLY Guildford’s Tariff Problem. Pinkston Plant Decision.

Ashton-under-Lyne. — Electrification of difficulty of obtaining supplies of meters have Sewage W orks.—The Electricity Committee resulted in this side of the undertaking coming is to invite tenders for the electrification of the practically to a standstill. For many months sewage works at an estimated cost of £2,136. past endeavours have been made to get labour to help in this direction but the position, Util) Bexhill.—Fuse Replacement.—At a meeting of the Electricity Committee it was reported despite the ending of the war, does not seem to that owing to shortage of labour, consumers improve. The work will be undertaken as were experiencing some difficulty in having fuses soon as possible. R e b a t e .—The Electricity Committee recom­ »Ulf replaced promptly by electrical contractors. The Committee recommended that the Depart­ mends a rebate of 50 per cent, of the fixed «*s ment should undertake the work at a charge charge to all consumers taking supplies under of 3s. the “ all in ” rate for the December quarter. Generating Plant. — The engineer has Bradford.—Supply to Tong Village. —The informed the Electricity Committee that all Electricity Committee has approved an amended the plant at the generating station in Wood- scheme for supplying Tong Village at an estimated bridge Road has now been put into operation cost of £1,296. and the station is now generating each day to Croydon.—New Power Station. — In the requirements of the Central Electricity connection with the second section of the new Board. power station, the Electricity Committee Model Kitchen.—The Housing Committee recommends the engagement of Allott & Sons has arranged for the electrical engineer to provide as civil engineering consultants; the chief a model kitchen at an exhibition at Guildford engineer as mechanical and electrical engineering House. * consultant; L. G. Mouchel & Partners, Ltd., Hastings.—Supply Extension.—The Elec­ as consulting engineers for the cooling towers; tricity Committee is to provide supply to the and Mr. Robert Atkinson as architect for the Rock Lane estate at a cost of £19,468. The buildings. proposed 11,000-V cable will be of sufficient Laboratory Equipment. — The Electricity capacity to meet developments in the extended Committee is to modernise the electrical area. engineering laboratory at the Polytechnic at a Llanidloes.—Future Supply Agreements.— cost of £4,400. The North Wales and South Cheshire Joint Fulham.—Increased Discount.—The 1944- Electricity Authority is asking the Town Council 45 . accounts of the Electricity Department to renew its application made thirteen years ago show a surplus of £71,136, but the Electricity for a Special Order authorising it to take over and Lighting Committee observes that this is the supply of electricity now being undertaken not likely to be maintained to the same extent by a private company. in the future. The Committee recommends that a further 5 per cent, discount (making 15 Morecambe.— New Feeder.—The Electricity per cent, in all) shall be allowed on the total Committee has approved a scheme for a second of all accounts except for supplies under special feeder to Overton to link with the existing agreements. The concession is to start with the feeder and extend the area of supply. current quarter and continue until the Depart­ Portland. —- Cooking Arrangements. — ment’s accounts for 1945-46 are available, or The Housing Committee has decided that of such other time as may be determined. the 100 permanent houses to be erected at Rental W iring.—Reduced charges for rental Pound Place 60 shall be provided with electric wiring are recommended, to operate from and and 40 with gas cookers. including the current quarter’s accounts, fn Preston.—Equipment of Ribbleton Houses. the case of consumers supplied through —An effort to refer back a resolution of the quarterly meters the charge for six points or Housing Committee that 750 permanent houses more will be 6d. per point per quarter; for less at Ribbleton should be equipped with cookers than six points, 7d. per point, with a minimum and wash boilers in the ratio of three houses with charge for three points. The charge per kWh electricity to one with gas was unsuccessful to slot meter consumers is to be reduced b " at a meeting of the Town Council last week. Id. per kWh. Aid. Rhodes, chairman of the Electricity Gateshead.— Housing Supplies.— The Town Committee, moved the amendment, largely on ror i ® Council has reached agreement with the North- the ground that his Committee would shortly lo t Eastern Electric Supply Co., Ltd., regarding the consider the provision of free wiring for cookers provision of electrical services to houses on the in all new houses and that there was no mention ofapp® Highfield estate. of water-heating facilities. Aid. Herbert and ike it* Guildford.—Consumers and Tariffs. — other members said it was not right to go to a The borough electrical engineer reports that private gas company when the town had its quite a large number of applications have been own electricity service. The town clerk ruled received during the past few months from that the Committee was within its legal rights consumers wishing to change from the flat in giving a choice of service. ie lilt* rate (either slot or quarterly meter) to the St. Marylebone.—Interest on Deposits.— “ all in ” rate. Unfortunately the very great The Electricity Committee recommends that shortage of labour for the fixing of meters and the Conference of Local Authorities Owning for the measuring of properties and the extreme Electricity Undertakings in Greater London 644 E l e c t r ic a l R e v ie w Novem ber 2, 1945 should be requested to take steps with a view to is necessary from the Electricity Commissioners); effecting a reduction from 4 to 3 or 2\ per cent, and that the manager be instructed to report in the interest on sums deposited as security in on the steps to be taken to obtain offers for the respect of payment for supplies, etc. new turbo-alternator, boiler plant, etc. Scotland.—Need for Cheap Power.—The London.—Stoppage of W aterloo Services. Inverness C.C. has decided to ask the North —Shortly after 8 p.m. last Thursday the electric of Scotland Hydro-Electric Board to introduce services of the Southern Railway between cheap electric power into Lochaber at the Waterloo and Clapham Junction were put out lit earliest possible moment in order to induce of action by a fire which occurred among cables industry to acquire the Admiralty installation just outside the Waterloo substation. The fire at Corpach for the purpose of starting factories was extinguished by the company’s staff in a 0Î- there. short time and current was restored at about I Tummel-Garry Scheme.— The Perth .and 10.30 p.m. Kinross County Council has decided to continue Rotherham.—Trolley-Buses. — The Cor­ opposition to the North of Scotland Hydro- poration is seeking in its next Parliamentary Electric Board’s Tummel-Garry project (con­ Bill to revive lapsed trolley-bus powers, and structional scheme No. 2) and to ask County authority for further trolley-vehicle services. M.P.s to table a motion for its annulment. 10 Sheffield.—Transport Finances.—The 1944- York.—L o a n s .—The Electricity Committee 45 report of the Transport Department (general is seeking sanction to borrow £17,891 for mains manager, Mr. H. Watson) shows that there was and services, £3,224 for assisted wiring and a net profit of £70,088 on the tramways and £11,784 for cables and substations. £66,327 on the motor-buses, making £136,415 0121 which has been transferred to renewals and g Re! TRANSPORT reserve. The total income from the tramways was £1,206,747 (against £1,198,726 in the 3 ! Of Glasgow.—The Pinkston Plant. —Replying previous year). Passengers carried (trams) to the Corporation’s application for consent to increased from 201-9 million to 204-2 million increase the generating plant at Pinkston power and the average traffic revenue per car-mile j Jot station by 2,500 kW by installing a 25,000 kW advanced from 19-826d. to 20-066d. A total m turbo-alternator to replace two existing machines of 43-1 million kWh was purchased and the 'to of 22,250 kW total capacity, the Electricity Com­ avera'ge consumption per car-mile was 2-771 missioners stated that they had decided to hold a kWh (against 2-740 kWh in the previous year). local inquiry into the application and had ie4 appointed Mr. H. Nimmo, to conduct it. RADIO and TELEPHONY tuts The Transport Committee agreed, in view of all E B the circumstances that the Town Clerk be Great Britain.—Trunk Line Extensions.— instructed to withdraw the application ; that During recent months the Post Office in its M I arrangements should be proceeded with for the efforts to improve the telephone service has aia replacement of the two existing machines of provided since January 1st, 1945, an additional : 22,500 kW capacity by one new machine of a 2,000 trunk circuits, each more than 25 miles similar capacity (in respect of which no consent in length, bringing the total in use to 10,700.

am Municipal Reports straE Liverpool million kWh for the tramways. The average sie* C O M P A R A T IV E figures for 1938-39 and 1944- price received was l-0 2 2d. compared with b csn 0-951d. in the previous year. Total income Is lie ^ 45 given in the report of the city electrical Ltd engineer of Liverpool (Mr. J. Eccles) show amounted to £2,875,531 (£2,698,349) with that the output of the generating stations (in working expenses at £2,339,559 (£2,120,240), million kWh) increased from 1,053-3 to 1,288-3 and there was a net surplus of £40,109 (£61,934) and the sales within the undertaking from which has been transferred to the reserve fund. 511-2 to 646-0. For the early war factories No rate contributions have been made in the 36 miles of 33- and 11-V cables and overhead past two years. lines and 42 substations had to be provided. Dewsbury Accelerated development of the Speke and East Lancashire Road areas and arrangements The report of Mr. G. H. Sammons, electrical ik for the provision of a supply to the L.M.S. engineer at Dewsbury, covers the undertaking’s Railway have necessitated further extensions fiftieth year (see Electrical Review, December and work is now in progress on the construction 22nd, 1944). Total sales last year amounted of an additional 30 miles of 33-kV cables and to 11-9 million kWh compared with 11-3 overhead lines. A new 51,500-kW turbo- million in 1943-44, the average price charged alternator and a 250,000 lb. per hr. boiler were being 0 -Old. lower at 1 -91 d. although working ica put into commission at Clarence Dock in 1943 costs rose from l-450d. to l-519d. per kWh and two further 350,000 lb. per hr. boilers are sold. Gross revenue was £99,762 (£97,440) in process of erection. and working expenses were £75,496 (£68,202), % Of last year’s total sales, 588-1 million kWh the net result after payment of loan charges, was for lighting and power (compared with etc., and income tax being a deficit o f £795 563-1 million kWh in 1943-44) and 57-6 (58-9) compared with a profit of £6,224. its November 2, 1945 E l e c t r ic a l R e v ie w 645 FDIMCUL SECTIO* Company News. Stock Exchange Activities. 1944, payable in sterling as in previous years, Reports and Dividends leaving Kr. 12,481,337 (£645,364) to be Strand Electric Holdings, Ltd.—The accounts carried forward. An interim dividend of 2 \ for the year ended July 11th last show that the per cent, will be payable for the first half of dividend receivable from the Strand Electric & 1945. Engineering Co., Ltd., in respect of the year The Anglo-American Telegraph Co., Ltd., is to April 30th, 1945, after taxation, was £8,115 maintaining its quarterly dividend at £ per cent. (against £7,827). The directors again recom­ mend the payment of a dividend of 10 per cent, The Pressed Steel Co., Ltd., is to pay an interim and a bonus of 2 i per cent, and £2,518 (£1,835) dividend of 10 per cent. (same). is carried forward. The Ever Ready Co. (Great Britain), Ltd., is The chairman (Mr. F. L. Blow), in a state­ maintaining its interim ordinary dividend at ment accompanying the accounts, relates some 15 per cent. of the company's wartime experiences (extensive damage to its works and the complete destruc­ The British Electric Traction Co., Ltd., tion of its West End demonstration theatre) announces the payment of an interim dividend and mentions a few of the types of apparatus of 15 per cent, (same) on the deferred ordinary produced and installed for the Service Depart­ shares. ■KSL; ments. Regarding the future, he says that the Meters, Ltd., is again paying an interim sales organisation has been strengthened by the dividend of 4 per cent. addition of an agency in Glasgow and by the 2 establishment, in conjunction with associated Marconi’s Wireless Telegraph Co., Ltd., is companies, of an export department. again paying an interim dividend of 3 j per cent. & AI The Jerusalem Electric & Public Service The Marconi International Marine Communica­ liii at: Corporation, Ltd., reports a profit for the year tion Co., Ltd., has declared an interim dividend ^ îs !" ended March 31st last of £90,605 (against of 2 j per cent. (same). £80,263). After providing £39,000 (£30,000) for taxation and making allocations to plant renewal and depreciation account, etc., there is New Companies PHI anet balance of £21,128 (£19,786). The ordinary Sheaf Electric Supply Co., Ltd.—Private dividend is again 5 per cent., less tax at company. Registered October 17th. Capital, O ü b ij 6s. 11 -924d. (6s. 9-427d.) in the £, and £13,291 £20,000. Objects: To carry on the business of (£10,534) is carried forward. The report wholesalers, retailers, merchants, manufacturers, states that a further 2,000 kW of plant has been importers and exporters of, and dealers in, ordered to meet the increased demand for electrical, mechanical, industrial, household or electricity. Preference dividends have been plumbing goods, tools and implements; elec­ paid on the same basis as last year but meetings tricians, radio and television engineers, etc. to deal with the matter will be held immediately Subscribers: G. W. Taylor, 41, Laud Avenue, after the annual meeting. Sheffield and A. Rodgers, 18, Trap Road, Crabtree Electrical Industries, Ltd., announces Sheffield. Solicitors: Irwin Mitchell, Kershaw a final dividend of 5 per cent, and a cash bonus & Co., Sheffield, 1. Isa of 7 i per cent., making a total distribution of C. Price & Co. (Electricians), Ltd.—Private 174 per cent, (same) for the year. The trading company. Registered October 22nd. Capital, profit of the operating company, J. A. Crabtree £1,000. Objects: To carry on the business of • - - & Co., Ltd., amounted to £224,105 (against manufacturers of, and dealers in, electric and r £244,292 last year) and the net profit was other lamps, radio and public address equip­ ; CS- £77,982 (£72,439). ment, reflectors, bells, fires, fans, etc. Directors: The London Electrical & General Trust, Ltd- R. C. J. Price, 26, Paton Street and P. D. ssrt: —The net profit for the year to June 30th was Asten, 3, Gooding Close, both of Leicester. : 3a : £32,603 (against £31,714). The ordinary' Registered office: 7, St. Augustine Street, dividend remains at 5 per cent, and after trans­ Leicester. ferring £2,447 (nil) to general reserve £16,355 Gordon M. Whittle, Ltd.—Private company. (£17,099) is carried forward. Registered in Edinburgh October 12th. Capital, The Brush Electrical Engineering Co., Ltd., £1,000. Objects: To carry on the business of :;s announces an interim dividend of 4 per cent. electricians, electrical engineers, etc. Sub­ this is at the same rate as last year when pay­ scribers: H. S. H. Murray, 10, Central Avenue, ment of an interim dividend was resumed. Glasgow- and G. M. Whittle, 45, West Graham Street, Glasgow. Registered office: 33a, The Great Northern Telegraph Co., Ltd., states that, including all such receipts and Gordon Street, Glasgow. expenditure for the past years as it has only Centurion Electric, Ltd.—Private company now been possible to ascertain after the libera­ Registered October 10th. Capital, £100. tion of Denmark, the accounts for 1944 show Objects: To carry on business as manufacturers 'ft si* gross receipts amounting to Kr. 31,827,080 of, and dealers in, transmitting and receiving •: (£1,645,661) and a balance of lCr. 4,394,575 sets, wireless, television, telegraphic and tele­ WlS- (£227,227). Adding the balance brought for­ phonic apparatus and fittings, etc. Permanent jaa 2-7 ward from nrevious years, the amount available directors: R. S. Quartermaine, 23, Woodside lot £'■ is Kr 20,225,337 (£1,045 777). The board Avenue, Finchley, N.2, and three others. recommends a dividend of 20 per cent, for Registered office: 20, Copthall Avenue, E.C.2. 6 4 6 E l e c t r ic a l R e v i e w Novem ber 2, 1945

Electro Analysis, Ltd.—Private company. 23, Chorley Road, Swinton, Lancs, and to Registered October 16th. Capital, £1,000. carry on the business of dealers in, and manu­ Objects: To carry on the business of electro, facturers of, batteries, accumulators, other mechanical, automobile, etc. engineers, manu­ electrical apparatus, etc. Directors: F . Had­ facturers of, and dealers in, electrical, scientific wick, 24, Glen Avenue, Swinton, Lancs, H. and optical instruments and machines, dealers Agnew, 419, Chorley Road, Swinton and in articles of rubber or its compounds, plastics, L. Sidebotham, 4, Bain Street, Swinton. etc. Permanent directors: L. C. Welch, Secretary: F. Hadwick. Registered office: 23, Ormonde Court, Putney. S.W .15 (chairman) Chorley Road, Swinton, Lancs. and T. W. Welch, 11, Berkeley Place, The Consolidated Electric (EUand), Ltd.—Private Ridgeway, S.W.19 (both directors of Ace company. Registered October 20th. Capital, Electronics, Ltd.). Secretary: W. C. Norman. £2,000. ’ Objects: To carry on the business of Registered office: 10, Adam Street, W.C.2. electrical engineers and contractors, etc. Sub­ Electrosterilisers, Ltd. — Private company. scribers : A. Brooke, 26, Sufton Street, Birkby, Registered October 16th. Capital, £1,000. Huddersfield, solicitor’s clerk and M. Garlick, Objects and other particulars similar to Electro 35, East Park Street, Morley, near Leeds, Analysis, Ltd. solicitor’s clerk. Registered office: Kiln End Newson Radio & Electrical Services, Ltd.—- Mills, EUand, Yorks. Private company. Registered October 10th. Me. & B. Heat Control, Ltd.—Private com­ Capital, £1,000. Objects: To carry on the pany. Registered October 20th. Capital. business of manufacturers and distributors of, £1,000. Objects: To carry on the business agents for and wholesale and retail dealers in, of manufacturers of, and dealers in, heat wireless and television sets and sound-producing control apparatus, electrical and agricultural machines, electric and other lamps and plant, equipment, etc. Directors: R. G. McLelland, etc. Directors: L. S. Phillips, radio and electrical Searles, Harlow Common, Essex and H. C. engineer, and Lily Phillips, both of 12, Cronwich Binstead, The Thatch, Hastingwood, near Road, Stoke Newington, N.16. Harlow, Essex. Registered office: Searles, Bridgham, Graham & Co., Ltd.—Private Harlow Common, Essex. company. Registered in Belfast on October 16th. Capital, £1,000. Objects: To carry on Mortgages and Charges the business of manufacturers of, and dealers in, all kinds of electrical supplies, apparatus North Metropolitan Power Station Co., Ltd.— and plant, etc. Directors: W. C. Bridgham, Satisfaction in fuU on or before September 151, Sandown Road and W. G. Graham, 7, 1st, 1945, of trust deed dated August 19th, 1930, Castleton Gardens, both o f Belfast, electrical and registered August 21st, 1930, securing engineers. Registered office: 108, Victoria Street, £850,000 5 per cent, second mortgage debenture Belfast. stock, 1963. Harris Oxley, Ltd.— Private company. North-Eastern Electric Supply Co., Ltd.— Registered October 11th. Capital, £3,000. Satisfaction to the further extent of £29,723 Objects: To carry on the business of manu­ on September 6th o f trust deed dated August facturers and repairers of, dealers in and hirers 1st and registered August 13th, 1935, originally of electrical and mechanical apparatus, acces­ securing £1,500,000 3 1 per cent, consolidated sories and components, and in particular debenture stock. wireless sets, radio sets and valves, etc. Daly (Condensers), Ltd.—Satisfaction in full Directors: F. J. W. Lager, Monkseaton, on September 14th, 1945, o f debenture dated Southcliffe Road, Friars Cliff, Christchurch, July 15th, 1931, and registered July 28th, 1931, Hants, and two others. Registered office, 109, securing £200. Southboume Grove, Bournemouth. J. Rayner & Sons (Grimsby), Ltd.—Private Receivers Released company. Registered October 19th. Capital, £2,000. Objects: To carry' on the business Rentals R.A.P., Ltd.—Cyril A. Sparks, of of electrical, radio, television, mechanical and 29-31, Euston Road, N .W .l, ceased to act as general engineers, etc. Directors: J. Rayner, receiver and/or manager on October 6th, 1945. electrical engineer (permanent managing George H. Neal & Co., Ltd.—William J. director), and Mrs. D. M. Rayner, both of Watt o f 20, Essex Street, W.C.2, ceased to act 170, Wilholme Road, Grimsby. Secretary : H. B. W. Parker. Registered office: 181, as receiver on October 5th, .1945. Wellington Street, Grimsby. H. G. Watkins & Co., Ltd.—Private company. Liquidations Registered October 19th. Capital, £1,000. .Amazon Telegraph Co., Ltd.—Particulars of Objects: To carry on the business of electrical, claims, etc., to be sent to the liquidator, Mr. radio, mechanical, general and precision en­ A. C. Dickinson, Stadium Works, Walton gineers, etc. Directors: H. G. Watkins, 1, Road, Woking, by December 31st. Corwens Terrace, Corwen, Merioneth, electrical engineer, and A. P. Noble, Mount Kinnerton, Leominster Electric Supply Co., Ltd.—Winding near Chester, barrister-at-law. Registered office: up voluntarily. Liquidator, Mr. A. M. Scott, Grosvenor House, 104, Watergate Street, 24-30, Gillingham Street, S.W .l. Chester. Amesbury Electric Light & General Supply Worthton Battery & Electrical Co., Ltd.— Co., Ltd. and Downton Electric Light Co., Ltd. Private company. Registered October 18th. — Meetings on November 29th at 24-30, Capital, £2,000. Objects: To acquire the Gillingham Street, S.W .l, to hear an account business of the Worthton Battery & Electrical of the winding up by the liquidator, Mr. Co., carried on by F. Hadwick and H. Agnew at A. M. Scott. November 2, 1945 E l e c t r ic a l R e v ie w 53

SWITCHGEAR

General W light C»; “ 1 a s t o n , B i r m i n g h a m 6 ‘b 11 Ł VERITYS Ltd. if an aß? , uidaiof 1 Sales Headquarters : BRETTENHAM HOUSE, LANCASTER PLACE, W.C.2 54 E l e c t r ic a l R e v ie w November 2, 1945

B U P D € T T €

STONHOUSE WORKS, CLAPHAM LONDON, S.W.4 MACaulay DAY and NIGHT 455S FOR RELIABLE SERVICE

STATOR OF AUTO-SYNCHRONOUS MOTOR REWOUND AT OUR WORKS WE REPAIR REWIND • REDESIGN A.C. and D.C. MOTORS ALTERNATORS ROTARY CONVERTERS CONTROLLERS NOTHING TOO SMALL — NOTHING TOO LARGE W E COLLECT AND DELIVER Established over 35 years Novem ber 2, 1945 E l e c t r ic a l R e v ie w 6 47 the old and new are both at the same price, STOCKS AND SHARES Enfield Cable 66s., Ever Ready 45s. and Reyrolle fJIH E effect of the interim Budget proposals 75s. 6d. Amongst other gains, De la Rue are remains in a considerably advanced value up to 11| , Chloride Electrical 85s., Murex of stocks and shares, more particularly those 5 & and Consolidated Signal 6|. The in companies that will benefit through the telephone group found supporters at increased promised reduction in excess profits tax. Last prices for Automatics, 72s., Ericssons, 55s. 6d. week, on the morning after the Budget speech, and Telephone Rentals, 14s. 6d. a rush occurred to buy the ordinary shares of most Home industrial companies. There was Miscellaneous Movements a huge turnover of shares, and, accompanying Cable & Wireless ordinary is better by the excitement in commercial issues, further 5 points at 96. Canadian Marconi were run rises occurred in gilt-edged securities. With up to 22s. by Montreal buyers. Radio shares the prospect of industry being stimulated by showed comparatively little change: Cossors the Government’s policy, investment is willing went better to 44s., but reacted to 43s. 6d .; to look ahead, and to employ money in the Philco continued dull at 12s. 6d. E.M.I. purchase of shares in companies that now have hardened to 34s. and Pye deferred to 33s. in the a chance of expanding their energies and their Budget “ boomlet.” Shares of companies profits. The Government expressly deprecates engaged in the heavy industry are mainly up distribution of increased dividends to share­ since a week ago. Babcock & Wilcox at £3 holders. Investors, however, must use their are 2s. higher. Hopkinsons at 85s., English surplus capital and they are now buying sound Electrics at 57s. and Aron Electrics are industrials yielding 4 per cent, or less. amongst those that have gains to their credit. J. & F. Stone put on Is. to 17s. Home Electricity The hardening tendency noticeable in the Crompton Parkinson market for Home electricity supply shares The Crompton Parkinson year ends with developed further strength under the pressure September 30th and the ordinary shares are of a renewal of investment buying. People have amongst those which are attracting notice from recovered from the apprenhensions current at the present day investor in front-rank industrial the time of the General Election and the flow companies. The issued capital of £1,932,245 of money into the market has been quickened includes £150,000 in ordinary stock (5s. units) by the reduction of rates on Treasury deposits. and £ 1,111,520 in “ A ” ordinary shares, In the teeth of elements which, in the ordinary also 5s. units. The Stock Exchange market is way, might make for hesitation on the part of mainly in the latter; it is comparatively seldom capital to embark further upon utility invest­ that the ordinary are dealt in. Both classes ments, prices have improved in the majority of are alike save for the voting power which cases. The list is decidedly firmer than it was a belongs to the ordinary. In each of the past week ago. This applies also to the preference two years, the company has declared dividends shares, prices of which have improved. Rises of 15 per cent, plus a bonus of per cent., in price have occurred in all sections, London, making 22^ per cent, for the year. Anticipation provincial and Scottish. looks for this rate to be maintained in respect of the year just ended. The report and accounts Transport Stocks appear early in December. The usual interim London Passenger Transport “ C ” stock dividend of per cent, on the ordinary and has risen to 66. The prior charges have not “ A ” ordinary shares was paid last June. The been altered. The rise in Transport “ C ” was price has kept steady at 32s. 6d., at which the accompanied by an advance of Is. in Thomas yield is 3£ per cent, on the money. Tilling shares to 55s. 6d. This apparently Associated British Engineering tempted a little swapping of the latter into British Electric Traction deferred stock, the The new issue of shares by Associated British price of which rose 100 points to 1105. Calcutta Engineering has now become marketable. Trams keep close to 77s. 6d. Brazilian Trac­ They were offered at 40s., and they stand at 7s. tions eased off to 28|. premium. Ex rights, the old shares are quoted at 51s. 3d. The company, formerly Petters, Manufacturing and Equipment Ltd., is now a holding concern, and owns a Upon the opening of the interim Budget substantial interest in Brush Electrical Engineer­ there was an immediate search for industrial ing. It sold its aircraft works some ten years companies that have suffered from heavy pres­ ago. In 1943-1944, the company acquired sure of E.P.T. Most of them did, of course, further interests, the money for the purchase and the list of equipment and manufacturing of which was provided through the sale of a ordinary shares makes a good showing this portion of the Associated British Engineering week. General Electrics are higher at 98s., Co.’s holding in Brush. The year ends with Henley’s at 29s. 3d., British Insulated Callender’s March. For 1945 the dividend was 8 per cent., at 47s. Other rises have occurred in Siemens comparing with 7 per cent, for 1944, and 6 per 39s. 6d., Telegraph Construction, 61s. 6d.— cent, in 1943. 6 4 8 E l e c t r ic a l R e v ie w Novem ber 2, 1945

London.—Royal Society Celebration of jubilee Forthcoming Events of discovery of X-rays. (Continued on 9 th and Friday, November 2nd.— Glasgow.—Royal 10 th,) Technical College, 7.15 p.m. I.E.E. Scottish London.—St. Stephen’s Tavern, Bridge Street, Students’ Section. “ Automobile Electrical Westminster, 6.30 p.m. E.P.E.A. Meter Equipment,” by G. Smith. Engineers’ Group (Southern Division). “ Pre­ payment Meters,” by E. Fawssett, M.I.E.E. Saturday, November 3rd.— Manchester.—At Birmingham.— Grand Hotel. Birmingham Geographical Society, 16, St. Mary’s Parsonage, Electric Club. Reunion dance. 2.30 p.m. Junior Institution of Engineers Newcastle-upon-Tyne. —- Old Assembly (N.W. Section). “ Economics of Industrial Rooms. I.E.E. North-Eastern Students’ Electric Heating,” by L. G. King. Section. Annual dance. Monday, November 5th. — Birmingham. — Cardiff.—At South Wales Institute of En­ James Watt Institute, 6 p.m. I.E.E. South gineers, 6.30 p.m. I.E.E. Cardiff Students’ Midland Centre. “ Survey of X-rays in Section. Informal talk on “ An Engineer Engineering and Industry,” by V. E. Pullin, Visits America,” by T. B. Rolls. C.B.E. Edinburgh.—Heriot Watt College, 7.15 p.m. Liverpool.—Royal Institution, Colquitt I.E.E. Scottish Students’ Section. “ Auto-Electric Street, 6 p.m. I.E.E. Mersey and North Wales Cars,” by W. Pratt. Centre. “ Excess-current Protection by H.R.C. Saturday, November 10th. — Leeds. —- Hotel Fuses on Medium-Voltage Circuits,” by R. T. Metropole, 3 p.m. Association of Mining Lythall, and “ Excess-current Protection by Electrical and Mechanical Engineers (York­ Overcurrent Relays on Medium-Voltage Cir­ shire N.W. Branch). “ Fluorescent Lighting,” cuits,” by A. G. Shreeve and P. J. Shipton. by J. H. Mollan. Sheffield.—University, Western Bank, 6 p.m. Illuminating Engineering Society (Sheffield Monday, November 12th. — Newcastle-upon- Centre). “ Illumination and Illusion,” by Tyne.—Neville Hall, 6.15 p.m. I.E.E. North- P. Hartell, A.M .I.E.E. Eastern Centre. “ Practical Aspects of Tele­ phone Interference Arising from Power Tuesday, November 6th. — London. — Odd­ Systems,” by P. B. Frost and E. F. M. Gould. fellows Hall, Hammersmith, S.W, 7.30 p.m. Wolverhampton.—Electricity Sports and Social Association of Supervising Electrical Engineers Club, St. Mark’s Road, 7 p.m. Electrical (North-West London Branch). “ Maximum Power Engineers’ Association (Midland Tech­ Demand,” by B. A. Vuille, M.I.E.E. nical Group). “ Aerial Cables,” by J. R. London.—Institution of Electrical Engineers, Harding, B.Sc., M.I.E.E. 7 p.m. London Students’ Section. “ Brains Bristol.—I.E.E. Western Centre. “ Opera­ Trust ” meeting. tional Control of Electricity Supply Systems,” Coventry.—Electricity Showrooms, Corpora­ by W. Kidd and E. M. S. McWhirter. tion Street, 6 p.m. Coventry Electric Club. “ Cables for Special Conditions,” by P. W. Friday, November 16th.— Bath.—I.E.E. Bristol Cave, B.Sc., M.I.E.E. Students’ Section. “ Brains Trust ” meeting Wednesday, November 7th. — London. — (questions by November 6th). Institution of Electrical Engineers, 5.30 p.m. Radio Section. “ Radio Measurements in the “ It Can Now be Revealed. . . . ” Decimetre and Centimetre Wavebands,” by R. J. Clayton, M.A., J. E. Houldin, Ph.D., HIS is the title of a beautifully illustrated B.Eng., H. R. L. Lamont, M.A., Ph.D., and T brochure issued by the railway companies W. E. Willshaw, M.Sc.Tech. (price Is.) describing the many ways in which Manchester.—Engineers’ Club, 12.30 for they contributed to victory and how they 12.45 p.m. North Western Fuel Luncheon surmounted formidable difficulties, especially Club. Luncheon meeting with address by those caused by enemy bombing. Some Prof. P. M. S. Blackett, F.R.S., on “ Atomic indications of future improvements are given Energy,” in the concluding chapter. In this it is stated Sheffield.—Central Library, 6.30 p.m. I.E.E. that the return of peace will see the resumption Sheffield Students’ Section. Students’ Lecture: of important electrification projects upon which “ Machinery for Electrical Ship Propulsion,” work was well advanced before the war. by W. J. Belsey. Mention is made of the western extension of Thursday, November 8th.—London.— Institu­ the Central tube to Denham and the eastern tion of Electrical Engineers, 5.30 p.m. Installa­ extension of the same tube to Ongar and tions Section. “ Street Lighting,” by E.C. Newbury Park, including the Chigwell loop, Lennox. with a new line from Newbury Park to Leyton; London. — London School of .Tropical the extension of the Northern tube to Bushey Medicine, Gower Street, 6 p.m. Society of Heath and the electrification of the Alexandra Instrument Technology. Discussion on Palace line, which will be connected with the “ Education in Instrument Technology.” Northern City tube; and the electrification of Newcastle-upon-Tyne.—At Mining Institute, the L.N .E.R. lines from Liverpool Street and Neville Hall, 6.15 p.m. Institute of Welding Fenchurch Street to Shenfield. In the Home (N.E. Tyneside Branch). “ Welding as Used Counties, work will be begun upon the electri­ in Modern Electric Power Stations,” by D. G. fication of the Sanderstead-Horsted Keynes Sinfield. section of the Southern. The electrification of the L.N .E.R. Manchester-Sheffield route will Friday, November 9th.— London.—Grosvenor be resumed; this will become the first British House, 8.30 p.m. to 1.30 a.m. Victory Ball main line on which all passenger and freight in aid of the Electrical Industries Benevolent train haulage and all shunting will be by electric Association. traction. Novem ber 2, 1945 E l e c t r i c a l R e v i e w 649 CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work

politan-Vickers Electrical Co. and Yorkshire Contracts Open Electric Transformer Co. Where “ Contracts Open ” are advertised in our Fulham.—Electricity and Lighting Com­ fais “ Official Notices ” section the date of the issue mittee. Recommended. Ash disposal plant is given in parentheses. for power station extension (£33,268).—Bab­ Blackpool.—November 12th. Electricity cock & Wilcox. Department. Cable, fire-extinguishing system Middlesex.—Health Committee. Accepted. and transformers. (October 19th.) Electrical installation at the Middlesex County Connah’s Quay.— Novem ber 5th. Urban Hospital extensions (£1,454).—Read & Partners. District Council. Electrical wiring of 60 houses, Oldham.—Electricity Committee. Accepted. Clough’s estate; and supplying 60 electric Cables.—Lancashire Cables. cookers and 60 electric wash-boilers. H. Jones, surveyor, Council Offices, Connah’s Quay, Southwark. — Electricity Committee. Chester. Accepted. 300-kVA transformer (£298).— Electric Construction Co. 100-A single-phase Dundee.—November 5th. Town Council. AC testing set (£318).—Metropolitan-Vickers. Electric lighting installations at 313 houses, Four DC recording voltmeters (£37).—Elliott Magdalene’s Kirkton housing scheme. Par­ Bros. (London). ticulars from the city quantity surveuor, 21, City Square. Westminster.—Works Committee. Recom­ mended. Four batteries (£772).—Chloride Kettering. — Novem ber 28th. Electricity Electrical Storage Co. Department. E.h.v. and l.v. paper-insulated, lead-covered armoured cables. (See this issue.) Contracts in Prospect Maltby.—November 10th. Urban District Particulars of new works and building schemes for Council. Thirty panel electric fires for houses the use of electrical installation contractors and on the Manor Park estate. Particulars from traders. Publication in this section is no guarantee H. Chadwick, surveyor, Council Offices, that electrical work is definitely included. Alleged Rotherham Road. inaccuracies should be reported to the Editors. Manchester.—November 26th. Electricity Coventry.—Factory, Foleshill Road; British Department. Capstans and bollards; surge Nylon Spinners, Ltd., Foleshill Road. and make-up water cast-iron tanks, etc., for Stuart Street generating station. (See this Coulsdon and Purley.— Permanent houses issue.) (100), Limpsfield Road, Sanderstead, for U.D.C.; Arthur W. Kenyon, architect, 15, New Zealand. — Novem ber 29th. Trolley­ Adeline Place, Bedford Square, London, bus overhead equipment. Wellington City W .C .l. Council. Dartford.—Works additions, Victoria Road, North West Midlands.—November 26th. Joint for J. & E. Hall, L td .; Archibald Leith & Electricity Authority. Outdoor type static Partners, architects. transformers, electricity supply meters, painting Featherstone.—Houses (50), Purston estate, of chimney stacks and spraying of cooling for U .D.C.; R. W. Bainton, clerk, Featherstone, towers. (See this issue.) Yorks. Plymouth. — November 10th. Electricity Gateshead-on-Tyne.—Completion of ad­ Department. Meters and joint boxes. ministration block, Queen Elizabeth Hospital; (October 26th.) borough surveyor. Scotland.—North of Scotland Hydro-Electric Factory, Kingsway North, for Fibreboard Board. Creosoted wood transmission line Boxes, Ltd., Dunston. poles. (See this issue.) Gosforth.—-Houses (200), for U.D.C.; Tasker Southwark.—November 14th. Electricity & Child, Trinity Buildings, New Bridge Street, Department. Paper-insulated lead-covered steel- Newcastle-on-Tyne. tape-armoured and unarmoured cables. (See Halifax.—Houses (72), Backhold Lane and this issue.) Cousin Lane; D. T. Lloyd Jones, borough Woolwich.—November 14th. Electricity engineer, Crossley Street. Department. H.v. and m.v. cables, electricity Leigh. — Outpatients’ Department, Leigh meters and transformers. (See this issue.) Infirmary (£60,000); Bradshaw Gass & Hope, architects, 19, Silverwell Street, Bolton. Orders Placed Llanrwst.—Houses (40) and bungalows (12) Ashton-under-Lyne. — Electricity Committee. for U.D.C.; S. C. Foulkes, architect, Central Accepted. 500-kVA transformer.—Ferranti. Chambers, Colwyn Bay. E.h.v. switchboard.—Ferguson, Pailin. Paper- Longbenton.—Permanent houses (50); T. insulated cables.— British Insulated Callender’s McNaught, Longbenton U.D.C. Offices, Forest Cables. Hall, near Newcastle. Bradford. — Electricity Committee. Accepted. Manchester. — Milk pasteurisation block at TransformersHackbridge Electrical Con- Langho Epileptic Colony; city architect, Town struction Co., English Electric Co., Metro- Hall. 6 5 0 E l e c t r i c a l R e v i e w Novem ber 2, 1945

Maryport.—Two factories for the West Scunthorpe. — Factory. Beauchamp’s Estate; Cumberland Development Co., Ltd.; J. Laing Kettering Co-operative Clothing Society, King & Sons, Ltd., builders, Carlisle. Street, Kettering. Middlesex. — Extensions, Waltham Cross Stockport.—Flats, Didsbury Road (£20,539); Institution (£26,590), mental colony (£21,546) C. Musker Bros., Ltd., builders, Bingham and Deephams sewage works (£21,000); county Street, Swinton. engineer. Tynemouth.—Additions, Tynemouth Infirmary Northallerton. - Factory; Bell & Golds- (£100,000); General Committee. borough. W a l l a s e y . — Houses (40); Lloyd & Cross, North Shields.—Factory for De La Rue builders, 68, Argyle Street, Birkenhead. Plastics, Ltd.; Sir Robert McAlpine & Sons, Warrington.—Works additions, School Street; Ltd., Carliol Ftouse, Newcastle-on-Tyne. Penketh Paint & Varnish Co. Norton (Staffs).—Schools (£21,000); Rev. Weardale.—Houses (14), Rookhope; R.D.C. R. B. McKenzie, The Rectory, Parish Church. surveyor. Paisley.—Reconstruction work for Pollock & Cochrane, Ltd., Thruscraig Works; manager. Wednesbury.—Houses (34), Dale Street; G. W. Yates, Ltd., builders, Chester Road, Rotherham.— Model dairy for the Rotherham Stonnall, Brownhills. Co-operative Society; Jenkinson & Son, architects. Wenlock.—Permanent houses (24), Hodge- Rushden.—School for 360 boys; county croft, Bridgnorth Road; J. Brian Cooper, architect, Northampton. architect, 144, Corporation Street, Birming­ ham, 4. St. Marylebone.—Rebuilding blocks of flats, Wharncliffe Gardens; T. P. Bennett & Sons. Westminster.—Flats (177), parish hall, etc., Dwellings (480), Church Street and Barrow Tachbrook estate; Westminster Housing Trust. Hill Road; L. de Soissons, and Stanley Hall, Flats (80), Cumberland Street; city engineer. Easton & Robertson, architects. Wolverton.—British Legion Hall (£10,000); Scarborough.—Three blocks of flats, Sandybed secretary, New Bradwell and District Branch of Lane; F. W. Plaxton, builder. the British Legion. NEW PATENTS Electrical Specifications Recently Published The numbers under which the specifications will be apparatus.” (Cognate applications 34260/38 printed and abridged are given in parentheses. and 14575/39.) November 24th, 1938. (572500.) Copies of any specification (Is. each) may be Marconi’s Wireless Telegraph Co., Ltd., and obtained from the Patent Office, 25, Southampton F. M. Wright.—“ Radio directional aerial Buildings, London, W.C.2. systems for very high-frequency operation.” KT.-GES. Brown, Boveri & Cie. —- 8584. July 7th, 1941. (572470.) A “ Gas blast circuit-breakers.” 958/44. Radio Corporation of America.—■“ Radio­ January 18th, 1943. (572489.) frequency heating.” 11370/43. July 31st, 1942. British Thomson-Houston Co., Ltd.— (572443.) “ Noise reduction circuit for sound “ Control of alternating current electric circuits recording systems.” 21332/43. December with the aid of inductive or capacitive reactors.” 31st, 1942. (572481.) 18828/43. November 14th, 1942. (573450.) Rediffusion, Ltd., and P. Adorjan. — “ Electric insulators.” 8440/44. May 4th, “ Apparatus for radio direction finding and 1943. (572499.) indicating.” 3277. February 21st, 1940. British Thomson-Houston Co., Ltd., and (572508.) A. W. Masters. — “ Centrifugal electric Rediffusion, Ltd., P. Adorjan and R. P. switches.” 7917. April 27th, 1944. (572498.) Gabriel.—-“ Radio direction finding and in­ British Thomson-Houston Co., Ltd., and dicating apparatus.” 11552. July 11th, 1940. C. W. Wood.—“ Electric lampholders.” 20704. (572570.) December 10th, 1943. (572479.) F. Salmon.—“ Incandescent electric lamp C. S. Bull.—“ Electron discharge devices.” 7639. April 29th, 1940. (572540.) sockets and adaptors therefor.” 12509. August Carr Fastener Co., Ltd., and G. Wagstaff.— 3rd, 1943. (572517.) “ Electrical contacts.” 21724. December 28th, G. R. Shepherd (Westinghouse Electric 1943. (572483.) International Co.).—“ Method of treating sheets Ferranti, Ltd., and H. Easton.—“ Moving- of ferrous silicon magnetic material to produce coil electrical instruments.” 1544. January an electrically insulating film on the surfaces 27th, 1944. (572492.) of the sheet.” 1399. January 25th, 1944. General Electric Co., Ltd., F. H. Brittain (572491.) and C. E. Ransley.—“ Electric rectifiers.” S. Smith & Sons (England), Ltd., and V. J. S. 14267. November 5th, 1941. (572511.) Russell.—“ Electric alarm clocks.” 17002. Hewittic Electric Co., Ltd., and R. Wells.— October 15th, 1943. (572554.) “ Vapour electric apparatus.” 20579. G. V. Tonner.—“ Electrically operated amuse­ December 9th, 1943. (572478.) ment devices.” 13605. August 20th, 1943. V. Hope.—“ Electrical switchgear.” 17779. (572519.) October 28th, 1943. (572477.) Wilmot-Breedon, Ltd., and C. H. Stephenson. Marconi’s Wireless Telegraph Co., Ltd., and —“ Electric laundry irons.” 262. January H. J. Round.—“ Magneto-strictive oscillatory 6th, 1944. (572486.) V oifw ifr 2. I'M? E l e c t r i c a l R e v i e w 5 5

FAMOUS HYDRO-ELECTRIC STATIONS. Here is tie Wilson Dam at Hmscle Skoals, USA. It was the first dam to he completed hy tke Tennessee Valley Authority in their immense scheme for the electnjumtron o f the ralley and the improvement o f conditions fo r agricnltnre and industry. It is the largest low-head dam in the world and i t s an electrical power if 600-000 H.P.

MEASUREMENT LIMITED

E/ectrici'ty and Water Meters of Quality TERMINAL HOUSE. LOWER BELGRAVE STREET, LONDON, S.W.I 56 E l e c t r i c a l R e v i e w Novem ber 2, 1945

'( ELECTRIC STORAGE V WATER HEATING V \ EQUIPMENT ^

Six 150-gallon G.E.C. Water Heaters, forming part of contract ready for shipment to the order of a Government Department

G.E.C. Water Heating Equipment, like many other well-known G.E.C. products, has proved its value in vital war-time services. The G.E.C. standard range of non-pressure, pressure and cistern types from i i to 30 galls, capacity has been widely used in all kinds of installations for a great number of years, and numerous industrial water heating applications employing G.E.C. large capacity equipment are known to users in various parts of the world.

WRITE FOR THE G.E.C. CATALOCUE OF WATER HEATING EQUIPMENT

Advt. o f The General Electric Co. Ltd., Head Office, Magnet House, Kingsrvay, London, W .C .2 November 2, 1945 E l e c t r i c a l R e v i e w 57 CLASSIFIED ADVERTISEMENTS- ADVERTISEMENTS for insertion in the following REPLIES TO advertisements published under a Fndav s issue are accepted up to First Post on Box Number if not to be delivered to any particular M onday, at Dorset House. Stamford Street, London. firm or individual should be accompanied by instruc­ S~t. 1. tions to this effect, addressed to the Manager of the CHARGE for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in is - - per line (approx. 7 words) per insertion, such cases cannot be returned to them. The name minimum 2 lines 4 or for display advertisements of an advertiser using a Box Number will not be SO/— per inch, with a minimum of one inch. Where ' disclosed. All replies to Box Numbers should be the advertisement includes a Box Number there is addressed to the Box Number in the advertisement, an additional charge of 6d. for postage of replies. c/o E L E C T R IC A L R E M E W , 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 E L E C T R IC A L two if ordered and prepaid with the first insertion. R E V IE W LT D . and crossed. Original testimonials should not be sent with applications for employment.

OFFICIAL NOTICES, METROPOLITAN BOROUGH OF WOOLWICH TENDERS, ETC. Electricity Department

METROPOLITAN BOROUGH OF SOUTHWARK H.V. and M.V. Cables

Electricity Department ^ F E N D E R S are invited by the above Council for the -1- supply of H .V. and M.V. Cables required during the E.H.T. and L.T. Insulated Cables year 1st January. 1946, to Slst December. 1946. Specification and form of tender may be obtained from TM-LNDERS are invited for the supply and delivery over the undersigned upon receipt of a deposit of £ 1 Is., which X a period of 12 months ending Slst December. 1946. will be refunded within one month of the receipt of a erf Paper Insulated Lead Covered Steel Tape Armoured bona fide tender. and Unarmoured Cables of various sires. Tenders, enclosed in a plain sealed envelope and endorsed Specification. Conditions and Form of Tender may be i “ Tender for Cables." must reach me not later than 12 obtained from the Borough Electrical Engineer and noon on the 14th November. 1945. Manager. Penrose Street. Southwark. S .E .17. The Council do not bind themselves to accept the lowest Tenders, together with Fair Wages Clause Declaration or any tender. duly signed as required by the Council on the forms pro­ DAVID JENKINS. vided. enclosed in a plain envelope, sealed and endorsed I Town Hall. Town Clerk. as directed in the tender form, must be delivered to the Woolwich. S.E .1S. undersigned not later than Wednesday. 14th November, ISth October. 1945. 32 15 1945. The Council does not bind itself to accept the lowest or any tender. METROPOLITAN BOROUGH OF WOOLWICH D. T. GRIFFITHS. Town H a ll. Town Clerk. Electricity Department Walworth Road. London, S .E .17 . 19th October. 1945. 3214 Electricity Meters

H P EN D ER S are invited by the above Council for the BOROUGH OF KETTERING X supply of Electricity Meters required during the year 1st January. 1946, to 31st December. 1946. Electricity Department Specification and form of tender may be obtained from the undersigned upon receipt of a deposit of £1 Is., which F E N D E R S are invited from British Manufacturers fo r: will be refunded within one month of the receipt of a SPECIFICATION No. 100. E.H.T. and L.T. Paper bona fide tender. Insulated. Lead Covered Armoured Cables, for the Tenders, enclosed in a plain sealed envelope and endorsed period of fifteen months ending 31st March. 1947. "Tender for Meters.” must reach me not later than 12 noon on the 14th November. 1945. Specification and Form of Tender, in duplicate, may be The Council do not bind themselves to accept the lowest obtained from Mr. C. Binns. Borough Electrical Engineer. or any tend». Rockingham Road. Kettering, upon receipt of one guinea, DAVID JENKINS. ▼inch will be refunded upon receipt of a bona fide tender Town Hall, Town Clerk. and the return of the Specification. Extra copies of the Woolwich. S.E .1S. Specification may be purchased at a cost erf 5s. each. ISth October. 1945. 3215 Tender must be submitted in a plain sealed envelope, supplied by the Corporation, endorsed ** Tender for Speci­ fication No. 100." and must be received by me not later METROPOLITAN BOROUGH OF WOOLWICH than first post on W EDNESDAY. 2Sth NOVEMBER. 1945. . The Corporation do not bind themselves to accept the Electricity Department lowest or any tender. JOHN CHASTON. Supply of Transformers Town Clerk's Office. Town Clerk. High Street. Kettering. r p E N D E R S are invited by the above Council for the 22nd October. 1945. 3227 X supply of Transformers required during the year 1st January. 1946. to Slst December. 1946. Specification and form of tender may be obtained from NORTH OF SCOTLAND HYDRO-ELECTRIC BOARD the undersigned upon receipt of a deposit of £1 Is., which will be refunded within one month of the receipt of a Creosoted Wood Poles bona fide tender. Tenders, enclosed in a plain sealed envelope and endorsed 'F E N D E R S are invited for the supply and delivery of “ Tender for Transformers,’ ' must reach me not later than X Creosoted Wood Transmission Line Poles. Copies of 12 noon on the 14th November. 1945. the Farm of Tender. Conditions of Contract. Specification The Council do not bind themselves to accept the lowest and Schedules mav be obtained from the undersigned. or any tend». * T. LAWRIE. DAVID JENKINS. 18. Both ess T Terrace. Secretary. T owti H all Town Clerk Edinburgh. 3. Woolwich. b.E.IS. SSndOctober. 1945. 321S ISth October. 1945. 3217 58 E l e c t r i c a l R e v i e w Novem ber 2. 1945

CITY OF MANCHESTER BOROUGH OF ROYAL TUNBRIDGE WELLS

T ^ H E Electricity Committee invites tenders for the supply, Appointment of Borough Electrical Engineer -*- delivery and erection at ST U A R T S T R E E T G E N E R ­ A T IN G STA TIO N . Bradford. Manchester, 1 1 . o f:— PPLICATIONS are invited for the appointment as A from 1st May. 1946. of Borough Electrical Engineer S I X C A P ST A N S AN D B O LL A R D S (Specification from Corporate Members of the Institution of Electrical No. 840). Engineers experienced in the management and administra­ SURGE AND MAKE-UP WATER CAST-IRON tion of an electricity undertaking. T A N K S. ETC. (Specification No. 841). Salary for the position will be in accordance with the agreement dated 9th Ju ly. 19 4 1. made by the National Joint Committee of Local Authorities and Chief Electrical Specifications, etc., may be obtained from Mr. R . A. S. Engineers, and in accordance therewith the salary for the Thwaites. Chief Engineer and Manager, Electricity Depart­ ftrn year will be 85% of the full salary and for the second ment, Town Hall. Manchester. 2. on payment of a fee of year 92£% thereof, the full salary being payable for the one guinea for each specification, which amount will be third and subsequent years. The full approximate salary refunded on receipt of a bona fide tender. for the financial year ending 31st March, 194o. would be Tenders, addressed to the Chairman of the Electricity £1,323. In addition, a temporary cost of living bonus Committee, to be delivered not later than 10 o’clock a.m. on Monday. 26th November. 1945. 15 The appointment will be determinable by three months’ PHILIP B. DINGLE. notice on either side and wOl be subject to the provisions Town Hall. Town Clerk. of the Local Government Superannuation Act. 193/: the Manchester. 2. successful candidate will be required to pass a medical 26th October, 1945. 3257 examination. . . No printed forms of application will be issued. Applica­ tions, endorsed “ Electrical Engineer.” stating full parti­ NORTH-WEST MIDLANDS JOINT ELECTRICITY culars of age. qualifications, past and present appointments AUTHORITY and experience, and giving the names and addresses of three persons to whom reference can be made, to be ^ P E N D E R S are invited for the following Contracts:— received by the undersigned not later than Thirty-first Contract No. A .278. Outdoor Type Static Transformers. December. 1945. Testimonials are not required. Members Contract No. A.279, Electricity Supply Meters. of H 3 I. Forces who have the necessary qualifications are Contract No. A.280, Painting of Chimney Stacks. invited to apply for the appointment. Contract No. A .28 1, Spraying of Cooling Towers. Canvassing, directly or indirectly, will be a disqualifi­ cation. Copies of Specifications and Forms of Tender may be The Control of Engagement Order. 1945. does not apply obtained from the undersigned, on payment of £2 (TWO to this vacancy. ______POUNDS) in currency notes. JOHN WHITEHEAD, Tenders must be delivered to the Clerk and Accountant Town Hall, Town Clerk. by the first post on M O NDAY. 26th N O V EM B ER . Tunbridge Wells. The Authority do not bind themselves to accept the October, 1945. 3146 lowest or any tender. F . F A V E L L . York Chambers, Chief Engineer and Manager. CITY OF BRADFORD Kingsway. Stoke-on-Trent. 24th October. 1945. 3223 Electricity Department

Appointment of Senior Demonstrator SITUATIONS VACANT ______A P P L IC A T IO N S are invited for the position of Female A'one of the vacancies for women advertised in these Senior Demonstrator in the above Department. columns relates to a woman between 18 and 40 unless such Applicants must hold a Diploma in Domestic Science or woman (a) has living with her a child of hers under the other approved qualifications, be competent to conduct age of 14, or (5) is registered under the Blind Persons Acts, lectures and demonstrations, and be able to advise on the or (c) has a Ministry of Labour verrait to allow her to use of various forms of electrical apparatus. obtain employment by individual effort. The salary offered is that attached to (Fanale) Grade 1 of the Corporation Salaries and Grading Scheme, com­ mencing at £190 per annum, and rising (subject to satis­ MALVERN URBAN DISTRICT COUNCIL factory service) by annual increments of £10 to £240 per annum. A t the present time a cost-of-living bonus at the Electricity Department rate of 18s. 6d. per week is also payable. The appointment will be subject to the provisions of Appointment of Mains Assistant Engineer the Local Government Superannuation Act. 1937. and the successful applicant will be required to pass a medical A P P LIC A TIO N S are invited for the above appointment. examination. a salary in accordance with Class B, Grade 6. of Applications, giving age, qualifications and full details the National Joint Board Schedule (£361 to £375 per of experience and appointments held, accompanied by annum). copies of recent testimonials, to be enclosed in envelopes Applicants must have had a sound technical training endorsed “ Senior Demonstrator.” and to reach the under­ and practical experience in the installation, maintenance signed not later than 15th November, 1945. and operation of E .H .T . and L .T . underground cable systems and substations, and be able to undertake work T. H. CARR. of layout design and planning and the keeping of records. Head Offices. Electrical Engineer and Manager. The appointment will be subject to the provisions of 27. Bolton Road. Bradford. the Local Government Superannuation Act. 1937, and the October. 1945. 3219 selected candidate will be required to pass a medical examination. The selected candidate will be required to provide his CENTRAL ELECTRICITY BOARD own motor vehicle and the Council will pay a travelling allowance in accordance with their current scale. South-East and East England Areas Applications, endorsed “ Mains Assistant Engineer.” stating age, full particulars of experience and qualifica­ Assistant Control Engineer tions, together with -copies of three recent testimonials, must be received by the undersigned not later than Satur­ A P P L IC A T IO N S are invited for the position of First day. the 10th November. 1945. Assistant Control Engineer at the Board’s Control The Ministry of Labour and National Service (Technical Room in London. and Scientific Register) have given permission under the Candidates, age not exceeding 35. should have a know­ Control of Engagement Order. 1945, for the advertisement ledge of Power Station work and technical qualifications of of this vacancy. Graduate I.E.E. standard J . BU LM A N . Apply to Manager. SE . and E.E. Area. Central Elec­ The Council House, Clerk of the Council. tricity Board. Aldwych House. London. W.C.2. Malvern. The Ministry of Labour and National Service have 20th October. 1945 . 318 2 authorised this advertisement. 3229 Novem ber 2, 1945 E l e c t r i c a l R e v i e w 59

'«El« BOROUGH OF ROYAL TUNBRIDGE WELLS CITY OF YORK Jiÿniii Electricity Department Appointment ot City Electrical Engineer wintami. Appointment of Assistant Demonstrator (Female) U k A P P LIC A TIO N S are invited for the position of City PPLICA TIO N S are invited for the above appointment “ jifiSS Electrical Engineer. Applicants must have experience aàmks^ in the operation of a " Selected ” generating station as A at a commencing salary of £120 per annum, rising well as in the administration and management of an elec­ to £210 per annum, plus war bonus. tricity undertaking, and must be Corporate Members of Candidates must have had a good general education and the Institution of Electrical Engineers. hold a recognised diploma in Domestic Science, and possess I k * W The person appointed will be required to devote the a thorough knowledge of the use of electrical domestic whole of his time to the duties of the office. appliances; possession of the E.A .W . Electrical Housecraft %‘S The salary will be in accordance with the scale of the Diploma will be an advantage. They must be competent National Joint Committee of Local Authorities and Chief to assist in the organising and conducting of Lecture »promiitç i? Electrical Engineers. Demonstrations and advise consumers on Kitchen Planning In accordance with Clause 10 of the agreement, the • Unjj :• and the selection and use of electrical apparatus. 1 OÍ ÜTÍDI tu salary for the first year will be 85% of the full salary, and The appointment will be subject to the provisions of for the second year 92i% thereof; the full salary being the Local Government Superannuation Act. 1937, and payable in the third and subsequent years. the successful candidate will be required to pass a medical ŒCS The appointment will be subject to the provisions of the examination. Local Government Superannuation Act. 1937, and the Sick Canvassing, directly or indirectly, will be a disquali­ 1Q Act, m:i Allowance Regulations of the Council. The successful fication. o P® JUKU candidate will be required to pass satisfactorily a medical Applications, endorsed “ Assistant Demonstrator.” stating examination. cisacd. Aprfc full particulars of age, qualifications, past and present The appointment will be determinable by three months appointments and experience, and giving the names of statiajĄ notice on either side. three persons to whom reference can be made, should be Applications, stating age. education, training, qualifica­ submitted to the Borough Electrical Engineer, Tunbridge ladidfcs tions. experience and present appointment, accompanied Wells, not later than 16th November. 1945. B y permission i be made, t; by copies of three recent testimonials, must reach the of the Ministry of Labour and National Service under the rtłaafe undersigned not later than 10 a.m. on the 29th day of Control of Engagement Order, 1945. re^mrid. fc November. 1945. endorsed “ City Electrical Engineer.” y ąoaliżcatasi Canvassing, either directly or indirectly, will be a dis­ JOHN WHITEHEAD. qualification. Town Hall, Town Clerk. rill be j& iï T. C. B E N F IE L D . Tunbridge Wells. Guildhall. York. Town Clerk. October, 1945. 3180 ^45. does net ç 16th October. 1945. 3 13 1 STRETFORD AND DISTRICT ELECTRICITY BOARD TEHEAD. TcnraCa HEYWOOD CORPORATION Appointment of Assistant Substation Superintendent Electricity Department A P PLICA TIO N S are invited for the above appointment Appointment of Rotary Substation Attendant from persons who have had experience in a similar position. Candidates must have high technical ability and must be competent to take charge of the commissioning, * P PLICA TIO N S are invited for the position of Rotary maintenance and operation of all plant in substations of Substation Attendant for shift duty in the Corporation capacity up to 30.000 kWs, dealing with voltages up to monstratłr Electricity Works. Applicants should have sound experi­ 33,000 on a system having a maximum demand of approxi­ ence in the control of high and low pressure switchboards, mately 70.000 kWs. and in the operation of rotary converting plant. The appointment will be subject to the provisions of the Conditions of service and rates of pay are in accordance Local Government Superannuation Act, 1937, and the with District Council No. 3. N.W . Area. Capacity in successful candidate will be required to pass a medical kWs. 1.001/2.000, The position is NOT subject to super­ examination. annuation. , The salary will be in accordance with Class H, Grade 8a. Applications, giving age, details of experience ai)d of the National Joint Board's Schedule, at present £409 enclosing copies of recent testimonials, to be delivered to per annum, rising to £429 per annum. the undersigned on or before Monday. November 5th. 1945. This advertisement is published by permission of the and endorsed “ R . S. A .” Ministry of Labour and National Service under the Control The Ministry of Labour and National Service has given of Engagement Order, 1945. permission under the Control of Engagement Order, 1945, Applications, endorsed “ Assistant Substation Super­ for the advertising of this vacancy. intendent.” giving details of training, experience and H. C. D A Y , qualifications, together with copies of testimonials, should Electricity Dept.. Borough Electrical Engineer. reach the undersigned not later than Saturday. 10th Egerton Street. November. 1945. Heywood. Lancs. C. T R EW A V A S. Town HaH, Stretford. Clerk to the Board. j¿2s sal Iłś 22nd October. 1945. 3184 bál STRETFORD AND DISTRICT ELECTRICITY BOARD i »¿Sd 3 2^ tdtoratíifes Appointment of Junior Shift Engineer EAST GRINSTEAD URBAN DISTRICT COUNCIL ;,l!ü P PLICA TIO N S are invited for the above appointment Substation Attendant A from suitably qualified engineers, with modern generating experience.______rTlH E above-named Council invite applications from The appointment will be subject to the provisions of qualified persons for appointment to the above perma­ the Local Government and Other Officers Superannuation nent position at their Electricity Undertaking. Wages in Act. 1937, and the successful candidate will be required accordance with D .J.I.C . Schedule. No. 11 Area, at present to pass a medical examination. „ £4 11s. for a 48-hour week. The salary will be in accordance with Class G. Grade y. Applicants must have good experience and knowledge of the National Joint Board’s Schedule, at present £340 of glass bulb rectifiers and switching operations ud to per annum, rising to £354 per annum. 11.000 volts. This advertisement is published by permission of the Applications, stating age. present appointment, and Ministry of Labour and National Service under the Control experience, with copies of two recent testimonials, to be of Engagement Order...... forwarded to the Deputy Clerk to the Council. Norton Applications, endorsed Junior Shift Engineer, giving House. London Road. East Grinstead, Surrey, not later details of training, experience and qualifications, together than the 16th day of November, 1945. and endorsed “ Sub­ rali t»»¡¡ with copies of testimonials, should reach the undersigned station Attendant.” not later than Saturday, the 10th November next. The Ministry of Labour and National Service have given C. T R E W A V A S. permission under the Control of Engagement Order 1945 for the advertisement of this vacancy. Town Hall. Stretford. Clerk to the Board 22nd October. 194o. 3 2 1- 23rd October, 1945. 3205 oil Séria * 60 E l e c t r i c a l R e v i e w Novem ber 2, 1945

COUNTY BOROUGH OF SOUTHPORT COUNTY BOROUGH OF WALLASEY

Electricity Department "A T T A N T E D : Plumber-Jointers. Rate 26.45d. per hour, * * £5 3s. 7d. per week of 47 hours. Applications, stating Junior Shift Engineer age and experience, to Borough Electrical Engineer, Wallasey Road, Wallasey. PPLIC A TIO N S are invited for the position of JU N IO R This advertisement does not relate to men between the A SHIFT ENGINEER at the Department’s “ Selected” ages of 18 and 50 inclusive, unless they are excepted from Generating Station. Candidates at present serving with the provisions of the Control of Engagement Order, 1945. H.M. Forces will receive every consideration. Candidates must have received a good technical training, E M R Y S E V A N S . Town Clerk. have a general knowledge of Central Station practice, and ______3233 be conversant with the operation and maintenance of Manager required for small progressive Electrical Turbo-Alternators. Water Tube Boiler Plant and E.H .T . A Wholesale business London and Eastern Counties Switchgear. area. Permanency and excellent prospects for capable Salary will be in accordance with the N .J.B . Schedule, man with good wholesale trade experience, wiring acces Class F , Grade 8a. The appointment will be subject to sories and appliances. Successful applicant should have the provisions of the Local Government Superannuation initiative to develop and expand a business which has Act, 19 22; medical examination necessary. been comparatively dormant during war to ultimately Candidates should give particulars of their Qualifications, become director. Replies treated in strictest confidence. experience and age, together with copies of two recent State experience, age, suggested commencing salary.— testimonials. Box 7851. c/o The Electrical Review. Applications, endorsed "Ju n io r Shift Engineer,” should R M A T U R E Winder required, over 5 1 or Class A be addressed to the Borough Electrical Engineer, 188, Lord A ex-Serviceman, South Coast Town. Reply details Street, Southport, and must be received by Monday, 12th experience and wages required.— Box 7843, c/o The Elec­ November, 1945. trical Review. The Ministry of Labour and National Service have given R M A T U R E Winders, experienced all classes A.C. and permission under the Control of Engagement Order, 1945, A D.C. jobs. Class A ex-Servicemen or otherwise for the advertisement of this vacancy. exempt M.O.L. control. Permanencies for suitable men. — Service Electric Co. Ltd ., Abbey Mfg. Estate, Alperton. R. E. PERRINS. Telephone, Wembley 0194. 49 Southport. Town Clerk. R M A T U R E Winders required. Experienced in all classes 20th October, 1945. 3236 A of repair work, A.C. or D.C. Class A. or otherwise exempt from Control of Engagement Order.— E . I. Ltd.. Faraday Works, Stoney Stanton Road, Coventry. 3153 BOROUGH OF ROYAL TUNBRIDGE WELLS SSIS T A N T Designer with previous experience (over A 5 1 or outside present Engagement Restrictions) Electricity Department required for electric motor manufacturers. State age. permanent progressive position. Applications welcomed Meter Superintendent from men shortly due for demobilisation. Apply— Higgs Motors Limited, Witton, Birmingham, 6. 3248 P P LIC A TIO N S are invited for the position of Meter SSIS T A N T Electrical Planning Engineer required by A Superintendent from qualified Engineers with ex­ A radio valve manufacturers in S .E . London area for perience in testing and repairing all types of watt-hour design and development of electrical equipment required meters, summation equipment and general meter depart­ in the manufacture of radio valves. Must have technical ment routine. qualifications and experience of complicated light circuit The conditions of employment are in accordance with work such as in automatic telephones. Applications from the National Joint B'oard Schedule, Class F , Grade 8a, Class A ex-Servicemen or those over 5 1 only. Write commencing salary £371 per annum, including war bonus. stating age. experience and salary required to— Box 781* The appointment to be subject to the provisions of the A. K . Advg., 212a, Shaftesbury Avenue, London W.C.2. 3127 Council’s Superannuation Scheme, and the successful can­ SSIST A N T S required in Publicity Department of didate will be required to undergo a medical examination. A large electrical manufacturing company in the Mid­ Applications, with copies of three recent testimonials, lands. Applicants must have ability to layout trade and should be addressed to the Borough Electrical Engineer. technical publications, possess knowledge of commercial Town Hall, Tunbridge Wells, not later than 17th Novem­ art and modern type faces, and be able to prepare good ber. 1945. visuals. Applications in confidence, stating age, previous The Ministry of Labour and National Service, Technical experience and salary required to— Box 314 5, c/o The and Scientific Register, have given permission under the Electrical Review. Control of Engagement Order, 1945, for the advertisement " D U Y E R S required for exporters of kitchenware (enamel, of this vacancy. etc.), electric irons, heaters and kettles. Write— Box JOHN WHITEHEAD, 649. ReyneUs’. 44, Chancery Lane. W.C.2. 3238 Town Hall, Town Clerk. Z^IA B LE Maker requires first-class Head Foreman, age Tunbridge Wells. ^ 30-45, with good general experience T .R .S. synthetic 22nd October, 1945. 3222 braided cables, good organiser, able to handle labour. Good opportunity for advancement right man. Apply, BRIERFIELD URBAN DISTRICT COUNCIL giving full particulars.— Aerialite Ltd., Stalybridge. 3071 / ^ H I E F Electrical Engineer required for large modern ^ Collieries. Applicants should have had first-class Electricity Department practical experience at collieries covering electric winders, generating plant and various classes of electrical equipment Temporary Cable Jointer (Plumber) and be familiar with mining regulations. Apply— Pearson and Dorman Long L td ., Richborough, Sandwich. Kent. 3201 /^ ILA SS A release ex-Servicemen who are qualified Elec- ELE above Council invite applications for the position trical Draughtsmen are invited to communicate with T of Temporary Cable Jointer. Wages in accordance the Personnel Officer. Foster Transformers & Switchgear with D .J.I.C . Schedule, No. 3 Area, “ B ” Zone, at present Ltd., South Wimbledon, S.W.19. Apply by writing in 25.43d. per hour for a 47-hour week. first instance. Good prospects for the right men. Salary Applicants must have & thorough practical and technical according to qualifications and experience. 3224 training in mains jointing, link boxes, feeder pillars and /C L E R IC A L Assistant, Class A ex-Serviceman, for substation L .T . B'oards. ^ Stores Office. Must have thorough knowledge of all Applications, stating age, present appointment and ex­ electrical material. Apply— London Electrical Company, perience. with copies of two recent testimonials, to be 92. Blackfriars Road. S.E.l. 24 forwarded to the undersigned not later than Saturday, /C O U N T E R Assistant, essential good knowledge of the 24th November, 1945. ^ trade. Class A ex-Serviceman. State experience, age. The Ministry of Labour and National Service have given salary, etc.. to— General Manager, Sloan Electrical Co. permission under the Control of Engagement Order, 1945, Ltd.. 41. Kingsway. W.C.?. 3155 for the advertisement of this vacancy. R AU G H TSM A N wanted by London lift firm. NORMAN ASHTON. A.M.I.E.E.. D Experience of electric control gear necessary! Electricity House, Engineer and Manager. Under 18. over 5 1 or Class A ex-Servicemen only. Write Colne Rd., Brierfield. Lancs. stating age and previous experience to— Box 3267 c/o 27th October, 1945. 3254 The Electrical Review. At> 1945 E l e c t r i c a l R e v i e w 6 1

E V K L : D _ m d respenmensal Ergfreer respired T.-d Drangñrsmen. reccm ng avañar-üe frr -5 ' 2 ^ " — ^ w Lm dcc. spcera.d^rg in em3?nymenr. nndm d a s A ¿ ¿ s c e i s a n-m . are r'" - - "Á—• -eared e^mpmens for irdrsssml inviScd :o appy irr p»sm*ms in me S^-iciigsar Depant' T v —cancos. Preveos experience m rres men: rf a large á s í a a l engineerng mannracrarer _ me 3tui aecessa. r e f r e í ^m r magmasicsr. inrmasrre ü ¿ Midñanñs. Ap-pdcañrns sraimg age. arrrrpnare _:ccnn_-na_ * £ !® Í 5 5 w«. * Frrgressrre -.~sr:;vr iv\.ATT irem r.nanñcanoos and indusrrral expenenoe. anc. ss_ary ¿jAl/£8Q0 p_a. A g 5ü ía sia g — i m j . ssasmg age. reimred. so— B cx c9, r.: c B k Kecsncxl Rev-lew. qparnoancns. expe_rence and s l .l t reraised frrm d a s A STIM A TO E posee^ng ±rss la s expenenre rf a_ 3 ^ g ^ X g :¿n CT Ctasr«nse r l rT- - - -~ -f— V r» T vMCgti.. E zypes cd n : r e r insnlaiec i-arls rec.— ed n n d n e y . —Box ^¿4- c o Tbe Eectri^I S c t v w . Frrmanenr and pergresive posncc. frr serrarle app_nam L E L I iilC 0*ekr~g. A ppiscsiaDBS are ¿rvipcd frr a j nrssessng inñáarfve. Arclroanis mnsc re free irrer E ^isaL-lec Lady^ EVemmssrascr by ■ * — tW w ,iiL cé j sssrärsums rf me Ccnrrrl rf Bngagemens Orden. Appdna- earere «xsfcers. Cand.dares mass posses a recogoised iicos. w-iñeñ wrB te sreared m sm-nesr ccnld enre. so— Upiemi at IXmeeñc Science. ¿ ^ A .w . or equivalen: and Box Idtd- c o Tbe ELecsrmaL B e r e v . •agar-ie rc d-edgmrg menns. carrying cafe lesos. esc.. fee TdAPZBZBNCED Armarme and Srarm ^ ndms. rred ■&£ pecdmtretr cf a eoafcery reck. Ib e posrlcc. is a JA. eppermmry irr ñgñs men. rver 51^ rar frrm d a s A i case- A ?;cé salary v i be paid so toe rgr: eX'Servicemen m ly. Wrlre. glving cerails rf pass expem- Please apply ® cor, ideare. soaring are. ence. so— Mckalectrlc Engmeenng C b - 5CÍ. W alsgnave _ salary required. *-vf w a a free.— B c i 7910. Ecad. Cdvcnsry . 7S€4 c olbe KLccSncal Se~-^r. T 7 X P E B IE N C E D ELeetrscal Engineer, d a ss A ex- T'LECTRICAL. Cass A ex-Servireciir reíanse as J A Servnceman. snu_ eerarlisd repam fn sm e s: nrnsr -L. Omler FTy-d and Asascars to Bryer. ¿i-eeer: be wrrrker.— Bcx 790 .. c o Xbe E k n ik a l Beview. jEspecss. scene knogfeáge cf made esemxZ Appay— T 7 M P - R TEXOED man revitiñred by radio valx-r mann- t . X. H_ Ffsrer. Farmer. S sa iiZ ¿ O r- 14 ¿, Su. J : c r JA* faornrlng cvapisy. S^_ Lcndrn area. so nake ása. LC-I. SÜI rnarge rf Bare Fixmg and Cbss Esmmarrng Dep-ammens. V L Z C T R IC A L Designers recorred « : n expensare in Anc-_canrs mnsr nave spe*rmed kn-rvrledge and eirerience. -L* ñesgn and devele pmeri cf m e cé iras : n ^ n * : preferan-ly in radio valve er lamp mannñacrnre. E x- Tr-pisfnm-enc sgimñgear. cccsreí rear, n sm rre r.i s, penence ln mme and mañen srnd a_ advsnsage. Wrire ricmrg rrrcrlrery cr power heese eiimpmen:. App—raris sramrg age. expenenre and s^lary reenlred so—B.rx 7551. ■wnss be drarrered IZeesrical mgireere rr poses an áee- A. ¿v. Ad vr., dida. ¿narSesicry Aveiae, Lxnkr. r ra i ergrreermg degree m she H:grer Nancna! Cfcrszñease W .d S . 3f¿0 msr* wreks marring and sexenal years' ¿xperrenee in X P X P O P u Aesssans reqnzred by ñrm c f d e e b k car-e J A mar, nracssrers. M rs: p o s e s ñrsr-ñas exgerlenoe ¿■eg-e Men l a h ¿naming Q & eesp E séaee crly are m and f e fn_y ccnvfrsans vrñh all prrcediire pemarnlng so n»f» d Vanees vacancies avadarle ar salames ceswreer expers resines. Permanen: and prrgresrve podsr-m irr «500 and £1.000 per annmm acorrding so age. ^nanñea- snrrañie ap-p-nranr. Ap-pdcarrrcs, ,sñ_-rñ w _ re rreared ln pTns and expeñeore. W m e. vjncñrg D -15 15A . so she ssrirscss ccnddenre. ro re ir-mvan_ .-i so Socrmsn Carles ¥ »'5e:t g¿ Larcrr a-d Xamrnal Service. Ap pon rrr errs Lid-. I>eansrde. E i n r e v . Apc-lrranis mnsr re free rrrm Deparsnen. Technical and. ¿cienññc Eesrsper. Brcm c 7 \ ressrimdns rf me Orzrrrrl cf Er.gagemenr Orden. 2ñtd Yrrx Henee. Kingsway. Lerdeo. W.Cdr fon ap plirañar TbTöICE denk ree;nrred. male enden 15. rvs 51 er ttna. which nnss re resumed remplescd by I.sn J d as A ex-Sömceman mly rr regale. Hnrvledge te. 1915- 3304 ■rf rlecpr-cal rrade an advarsage. Penmanem posmcin- y T Ji T F . TdAT. m arrram rers rarmre ¿nr Lcon m Ingm- Wrñe— Box Tr'r-a. Smrrns. I X . Flees ¿rreep. jl.C-4. cddl -L* ing Deparmnmr an ensgeric. v d k d v a t e d man. 'P ' m ¿ O X A^emrlral Lrd. wnl s é x e e me resnm cf all f and maining and c G o n a c M exper.ence A sä e r fermen jmecsrrclans and EEermcal Asscsranps. se n ñ . Frr semnksl ccrrmerñal «enáre^ vrrk wññ aZ W j ± avenarle ro a— d a s A ex-Servlosnsn. and mrse u p e -rf ngñnnn ñirfngs and _ nrr.maricn. ^ Ccrreepcncence. rv^r 5 1 . in all pares er I.oof rn and in mrtsr areas cf sales, ere. B m sn NaricnaL Medical eaam- England- Ap-ply penscina_y. er in wrising. so— PnrsccmX wmsñvr Ap-ptiearzcns frrnn «das A ea-Sem-iennen cr mose Manager. 34 f ¿ c ñ K Ebcra Hrgñ B i . Lordrm N .W .d 31c4 uer 5 1 -mly. Derailed ramcnúars and salary rsm ired re I L M 0 E Drangnnsman fer deccrarive Egnrlng ñrrmgs —Bcx 3147. c o Une Elemncal Heries-. n s n n s m r e s , 5.W . I q - c n ccsrrms. Appllcarlcns I^ L E C IB IC IA N -samed immedrareiy. Permanency fer rrrm d a s A ex-Servlrennen rr mose nnden 1 5 cnly. Wrise. -L £troi s^_ —t—d ~-Tj- wññ rbnrmgñ knrwlege ce srasing age. expenerce and salary retmrred.— Box 3d47. safe. Gcod prrspecns. Apoérarircs inrm d a s A c o Tde EZermral Bevieg. ® S e y i c s r £ i :r ever 5 1 cnly. Wrrre scaring age and T -GHTINCt ip-r.mgs E ig n e r . Brimsr- reprrrred frr Cen- agenence so— B ox 3190. c / o Tbe Eecsñ ral Hevñsw. J - * mal Lcndm ry large mannraemrms. Ccrrm^rñal and X rL Z d T P I dA N 5 and A ssn am s ree.mred frr Lcndrn and Ind-smial '-'g~d-g ep-incnen: icr mngssen. rnnrsoens and -L* Prrvinos. d a s A ex-Servíonn-m cr cv^ 51-—Gee. ñiscñarge lampe. Ederm cal and mmnmarrm mammg and K. Xaydr A O?. Xeodcsn' Lsd.. 36, D srm ars Avenne. exprenrenoe esencial. Medl-ral exammarrem Appdcarfcrs «anrled-m. S.W .19. Wzm 5C Í1. 3C6d frrm d a s A ex-Servlrsnec c mose ever 51 mly. Srare ~|7T F ^ T R ld AX> and A s ^sranrs wamed. d a s A ex salary and mH parmmlans so— Box 314 5. r o Tbe EZec- - L Seríñremm m ever 5 1 . Psnmanency i¿ : m-m.— rrmal F-eves". í H. P a n Ltd.. 99. Sc. Mamin's Lane. A I" 4 HST EISA VCEI Eecsriman reQulred ry Täwbm WJCL2. * ^’ J - ncnrracpcr- Appdcancms m ly frrm mese 51 'C'LECTEI-ZIANS. d as A ex-Servicemen cr e n rvs; m d a s A ex-Seyyrm im . App r r r i feil pam-mlars -L- exempr frrm M .O I . coaÉraL repaired irr Mldñnds :c— B cx Sfg.5. r r Tde Jnecmr-ral Bevfe«-- etc Scnrñ Wales.— Jc c n Bicñnrñs A Ce. Ind.. 9. Hñpi A f"AlS C g'A C T U B EB cf ¿ecmi-ral mansfmmers ln Lcndm Seres. B s t o M K - l t e L 7SS5 - i ñas vaoan ñ s fer men -mñ srme ¿eommal i n r - leige Í7L E C T E IC IA N 5. d-asg A ex-Serviosnem cr 51. ln me Wnr-ilng and A sem rly Deparmrerrrs. Xbe remraey -*-* required iey ¿eerriral ? n r erees. Cenmal Lcndm . s preptared so gñre sce sperñadsed malnlng necesary m — B cx 32C c. apprrved appd'rancs. vrfsn a vñnsr so permanen: mcploy- £/ o XLe A_e*rszical E e rie v. menr ap goed rares x ‘ psay. Smnl-ekmed rares vcold re T7 ' ~-~T~R T«~T W S rennneñ gr-.A. ■ e s r s ñ n s ñ c d c q e - psard miña, y . sc- re increased_:o m Z^gr-ed r a ss znmeir- JL. pramey r~r ¿’-»'o • ~a=s msra..a.i:cn anr ma—~enar.ee a:ely rs s deán mas sce appnrans '¡v_ rereme a sarrsrac- reny c a f a r a n Frve-iay week rf 47 n-ems ■sim cecadcnal « s t S o s r e d : 'i - C . : T ^ S . Ge. : .-raaLaoBS. Par- m-p-: ecrtícvmeni- c’n s A * renrt_ rr ^un=^- rvensime. Applfcañms frrm d a s A ex-Serdremen and “ñ n s exmrpn rrrm M .0 X . yrmrri orJy.— B cx 3C&55» c o TO! Sr=e-—w i± ;ü i Co.- JS. ü.— ssfe». Tmt^s. _ . . Tygg Tbe Elecsrpral B e rie t. —•=*—:~-=d frr m¿msnm_ msrs—m r A p Z T Z B Mem.ar c. AppZrañm s are fnmrei im sne »=*= be 3°»ed pesssm cf Mesar V m .- r v rrrm rrarfsmen _namng ■aarÄ. C ss A fX^äro.-a®fS * smsanle expeñame in repalrinp and recañrrañng m rypes w a t c-rr— ' P-nm anenns rer serrare mm.— Service cf vmrs-npGr mesers. snmnmrfrn eperpmem and nme S ä r t O ü i. AÍcey S£i==ärea==* Esaie. 4Jpa*ca. s^smeñs. Orndññrns cf snplrymem and wages are in Tekjir»-T5£. Wsnifey 01«- “ acccrdanre gfsb Sr. 9 Area. J1C -. me presar: wage ’reñrg £5 1=. lO i. j » week c f 47 ñcore. inXrsdrrg_ •var TTSJIXEERs C i Psy ^ :^--T=—» *Ty^r= bosas. Xbe appernrmen: rr me ñrss frenan re v E re y. - . _ r T ‘ - -— ,-^rlcns m me- neavy e-emn-m. r >n ; rem porary. Applr rañme. -®rm rep les cf mree reeens demneal macriins and srans- resñm-rmals. sr*rnd ’re adfresed so sbe B orm gi n_ep- ¿ a & ^ c f 5 Arge elemrinal mglneenng mann- mcal Engfnear. Iran as... Tmfñige Weis, ry 17th 7 ^ - — ? S v T 7 - ; a np 11 rañms. scaring age. appm- Xrvemfer. 1945. Tbe V -m y rr Lafccr **-~d Nañmai “ i53— m. “ ----- ns and Miririil expelenre. Service. Tererrlcal and Seienrrdr B e g s s c . ~.av- erren p*re- ~t~7 —. ;jer. tc—Box 71. c ro Tue Elec- m ss-rp roñen sbe Cccmcl cf rergagemen: Orrer. l 945. frr l erder : sne advms^mars of shré vaoancy. sñral B evi: 62 E l e c t r i c a l R e v i e w Novem ber 2, 1945 ■SlZL A T A N A G E R required to take cnarge of technical T J EQUIRED. Two Junior Electrical Draughtsmen, tarns- l'gaaö development and research in the design and produc­ -TV former experience essential, permanent position^good tion of small electric motors. Please send full details of post-war prospects. Applications from Class A ex-bervice- experience and salary required.— Box 3099, c/o The men only.—Box 3087, c/o The Electrical Review. Electrical Review. C JE N IO R Mechanical and Electrical Engineer required by / A V E R S E A S Appointment. Government of the Punjab. »O large engineering firm to take charge of erection and ^ India, require a Principal for the Punjab College of commissioning of turbo-alternators in western district of Engineering and Technology. Lahore. Candidates, prefer­ Great Britain. Steam turbine experience essential Tact, ably British subjects between the ages of 42 and 46. must personality and ability to control staff required. Salary possess a University Degree in Engineering (preferably according to experience. Write, with details, to— Box Honours), should be at least an A.M .LM ech.E., A .M .I.E .E . No. 225. 8. Serle Street, London. W.C.&. 3195 or A .M .I.C.E., with several years’ experience in modern Q K ILLED Draughtsmen required by transformer manu methods of teaching engineering subjects, and preferably »O facturers in London. Preference will be given to an in college administration, and should be men of broad applicant who ha.q had experience of transformer design, sympathies, character and personality, with administrative but applications from draughtsmen skilled in other branches ability and powers of control. Permanent, but appoint­ of electrical industry will receive full consideration. Five- ment will in the first instance be on contract for five years. day week. Association rates offered. Class A ex-Service- Salary E s. 1750 a month, rising by annual increments of men and others exempt from M .O.L. control only.— Box Rs. 50 a month to R s. 2400 a month (Rupee = Is. 6d.), 3069, c/o The Electrical Review. plus for a selected candidate of non-Asiatic domicile, £30 S T O R E K E E P E R and Stores Assistant with knowledge of a month overseas pay. Initial pay according to age. ^ general electrical supplies. Vacancy (permanent) occurs qualifications and experience. Free passage to India and owing to death. Applications from Class A ex-Servicemen back (and in certain circumstances up to two additional or those over 5 1 only. Details of experience and salary fares for family) for non-Asiatic candidates; free medical required to—W. E. Co. Ltd., 37, Vauxhall Bridge Road, attention, rent and bungalow. Write, quoting C.2854A, S .W .l. 3158 to Ministry of Labour and National Service, Appointments rpECHNICAL director of company in light engineering Department, Technical and Scientific Register, Room 670. -T industry, owning several factories, requires Assistant York House, Kingsway, London, W .C.2, for application with following qualifications : Production background, drive form, which must be returned completed by 10th Novem­ and flexibility, experience in organisation and control of ber. 1945. 3203 scientific and technical staff, academic qualifications pre­ ferred. Excellent opportunity for capable and energetic /AVERSEAS Employment. Inspector of Works (Elec- " man. Write, giving complete details, stating salary re­ trical) required by the Government of the Gold Coast quired, to—Box H.N.4, c/o 5, New Bridge St., London, .2E-V for the Public Works Department for one tour of 12 to 24 E.C.4. 3240 s a j: months,- with prospect of permanency. Salary £400 rising fTlE C H N T C A L Writer required, good knowledge of to £500 a year, plus local allowance of £60 and allowance -T instrument manufacture and modem electronic for married men between £84 and £204 according to apparatus; experience in preparation of catalogues and h aï number of children. Outfit allowance £60. Free passages servicing mannak essential; permanent post. Apply and quarters. Candidates must have served an apprentice­ stating age, qualifications, salary, etc., to— Muirhead & ship with a firm of electrical contractors or supply organi­ Co. Ltd., Elmers End, Beckenham Kent. 3139 j' i UI sation, and have since held a responsible position in cable r riE S T Room Assistants. Two juniors required for test- 2 : : 2 é laying and jointing, overhead distribution systems up to -T ing electrical transformers and mercury arc rectifiers. 33,000 volts, and internal wiring of buildings. Written Progressive position. Applications only from Class A *ä 12* applications (no interviews), giving the following essential ex-Servicemen or under 18. Apply— Box 3174 , c/o The details: (1) Full name; (2) Date of birth; (3) Qualifica­ Electrical Review. tions and experience; (4) Name and address of present UR BINE Room Foremen. Applications are invited employers; (5) Details of present work, should be sent to -T from men who have had experience as a turbine room the Secretary. Overseas Manpower Committee (Eef. 292), foreman or senior driver in power stations employing E 1323 Ministry of Labour and National Service, York House. 30.000 to 60.000 kW. turbo-alternator sets, working with f£-Ba Kingsway. London, W .C.2. Applications cannot be steam conditions of 600 lbs. per square inch and 800°F. III 24. acknowledged. 32 31 temperature. Applicants should have a full knowledge of "P R O D U C T IO N Controller required by progressive operation procedure of all auxiliary plant associated with •2 3 3 . ¡J -T London Company manufacturing scientific and the turbines, and their applications should state in detail ÍISBÍEZ! electrical measuring instruments. To be responsible for their experience and knowledge in this direction. Terms daaS? purchasing, production planning, progress, stores and of employment will be in accordance with the National S&sa ; stock control. Commencing salary £500-£600, according Joint Industrial Council, Area No. 10. Agreement, with a to qualifications.— Box 3188. c/o The Electrical Review. present basic shift rate of 2s. 10.43d. per hour. Applica­ R O G R E SS Clerk required in purchasing dept., with tions should be made in writing to the undersigned.— knowledge electrical/radio terms. Class A ex-Service- P W. C. Parker, Borough Electrical Engineer, 587/591. S man. Good prospects permanency. Write, stating age. Fulham Road. S.W .6. 3241 Ł S 3 experience, salary desired.— R C A Photophone Ltd., Bel- TT 'A CA N C TES are available for men released in Class A grove House, Belgrove Street, King’s Cross, W .C .l. 3265 ’ who have had experience on Instrument Work. Pre­ R O G R E SSIV E company requires experienced Female ference will be given to those who possess some* theoretical knowledge. Apply, stating experience, training, age and P Book-keeper, Shorthand-Typist with a view to i n n taking over complete control of office Reply stating age. wages required, to— Cambridge Instrument Company Ltd.. experience and salary required to— Visolite Limited. Sydney Road, Muswell Hill, N .10 . 46 98/98a, Soho Road, Handsworth, Birmingham. 21. 3258 A N T E D an experienced Toolmaker-Designer for « 5 a Hi ADIO. An Electrician with experience of installation W Bakelite Moulds. Applications from those o va 51 R and maintenance of domestic wireless sets is required or Class A ex-Servicemen only. Write in first instance to by the East Anglian Electric Supply Co. Ltd.. Finborough —Box 3057. c /o The Electrical Review. \KT A N T E D for an Indian firm in Madras, a qualified Hall. Stowmarket, Suffolk. Applicants should be Class A Electrical Engineer, with over 10 years' experience £3r- releases or exempt from labour control. 7877 in erection, maintenance, contracts, estimating in power T > E F R IG E R A T IO N . Opportunity occurs with old stations, with H.T.O.H. lines, pumping and industrial ¡s a i* -T v established growing concern for an energetic young installations. Preference to those who have electrical and man with experience as Traveller. Good prospects. mechanical qualifications. Minimnm salary £750 per Są -;r- Applicants should give full details of experience and annum, free of Indian income tax. Three years contract. salary required and be exempt from M .O.L. control.— Special terms according to ability. Apply, with full parti­ Box 3266, c/o The Electrical Review. culars. to— Box 3220. c/o The Electrical Review. X > E P R E S E N T A T 1V E . experienced, required by firm of T T r AN T E D for Assam. Working Colliery Electrician, five -TV wholesale electrical suppliers, for London and Home ' ▼ vpars’ agreement, starting on R s. 550 pertust mnnthmonth. Counties south of the River. Individual with connection Terms include bungalow accommodation, medical attend­ amongst large industrials preferred. Good salary, expense ance. membership of provident fund, temporary allowances. allowance and prospects. Apply in writing first instance. Applicants should write, giving fall particulars, to— —W. & W.. 13. Bloomsbury Square. W.C.l. 3200 “ B. B..” c/o J. W. Vickers & Co. Ltd.. 7/8, Great Win­ O A L E S Engineer required by prominent London instru- chester Street. E .C .2. 3235 ^ ment company, to take charge of sales office and to \ X 7 0 E K I N G Manager required to take complete charge handle all correspondence and contracts (home and export). t T Of small electric supply company. Generation by ¡Bin - Must have sound knowledge of industrial and laboratory water and ofl. Commencing salary £400 per annum Appli­ indicating instruments and electronic test gear. Our staff cations, accompamed b ytw o recen t testimonials, to reach have been notified of this vacancy.— Box 3237, c/o The Secretary, Machynlleth Electric Supply Comnanv T imited Electrical Review. Machynlleth, by the 10th November. 1945 3D9 Novem ber 2, 1945 E l e c t r i c a l R e v i e w 63

W A F E.? I ndia. Electrical Sales Engineer, pre­ E V ELO P M E N T Designer-Uraughtsman. with 10 years’ ferably with knowledge of overhead high tension D experience in precision mechanical engineering an dL.F. transmission, electric railway, tramway and trolley bus and H .F. electrical engineering design and practice, seeks a overhead construction. Age 28/34. Apply by letter, position in the research department of a firm dealing with stating age. full particulars of education, engineering the automatic control of industrial processes. Leicester qualifications and experience, to—Box 314 1. c/o The area preferred.— Box 7905, c/o The Electrical Review. Electrical Review. istrib u tio n Engineer (37). a.m .i.e.e., B.sc.(Eng.), TVJTAREHOUSEM AN, essential good knowledge of the D seeks post with company developing rural area. E x ­ ' 1 trade. Class A ex-Serviceman. State experience, age. perienced 33-kV, 11-k V and 400-volt overhead and under­ salary, etc.. to— General Manager. Sloan Electrical Co. ground systems. Reasonable salary. Own car.— Box 7807. Ltd.. 41, Kingsway. W .C.2. 3157 c/o The Electrical Review. T^R AU G H TSM A N -Surveyor, 14 years’ experience. All U draughtsmanship as applied to Supply Authority. APPOINTMENTS FILLED Mechanical, electrical and building; survey, profile, design Dissatisfaction having been so often expressed that un­ and erection of E.H .V . and L.V . overhead mains and successful applicants are left in ignorance of the fact that cable layouts. Position of responsibility preferred. Free the position applied for has been filled, may we suggest in few weeks’ time.—Box 7904. c/o The Electrical Review. that Advertisers notify us to that effect when they have LE C T . Eng.. Class A release, med. cat. A l. age 40, arrived at a decision? We will then insert a notice free E 22 yrs.’ experience all branches, estimating, three- of charge under this heading. phase overhead and underground distribution, etc.. requires HESHAM Electric Light & Power Co. — Assistant suitable position.— Box 7797, c/o The Electrical Review. District Distribution Engineer. "p ^ LE C T R IC A L Engineer, M .A .S.E .E ., age 35, free Nov. C 1st, widely experienced in. factory layout and installa­ tions, design and production of control gear resistances, SITUATIONS WANTED test gear, etc.. seeks executive post. Reply—Box 7872, Young Technician (20). H.N.C. Stud. I.E .E . seeks c/o The Electrical Review. A progressive position in industry. Two years’ L E C T R IC A L Engineer, thorough knowledge of wiring experience in manufacture of small transformers and E and distribution (has installed most types of engineer­ light electro-magnetic work.— OBox 7900, c/o The Electrical ing plant), requires progressive situation.— Box 3199, c/o ©«Si» Review. The Electrical Review. C TIV E Sales Engineer (Technical) invites contact with X ^ L E C T R IC A L Engineer, Power Repair Specialist, desires A manufacturers seeking representation, London and executive change. Exempt M.O.L. control, experienced South. Specially interested in motors (all sizes), rectifiers, windings, designs, tests, plant purchase.— Box 7875, c/o gear units and spraying equipment. Wide experience and The Electrical Review. live contacts. Free from control. Car & phone.— 'Box X ^ L E C T R T C A L Foreman (40). now free of M. of L. 7902. c/o The Electrical Review. direction, open to re-engagement. Accustomed to D V E R T ISE R (40), seeks situation as Mains Assistant large industrial installations and equipment, contracting, A or Foreman, 19 years’ experience of corporation and estimating, supervising and maintenance. London or contracting work; past 3 years full control supervising South preferred.—'Roberts, 74. Morden Road. Newport. complete installation of L .V . and H .V. distribution, up to Mon. 7898 11 kV on R .A .F . stations. Further details supplied.— T ^ N G IN E E R , Electrical. Mechanical, Maintenance, or Box 7822, c/o The Electrical Review. Assistant to Contractor, long experience erectors A D V E R T IS E R seeks post as Supervisor. Representa- and upkeep various installations and plant, work planning, tive. or Head Foreman. 25 years’ experience on supervision, records, estimating, knowldge steam. H.W installations elect. & mechanical survey, planning, and and cooking plants, over 5 1.— Box 7859, c/o The Elec­ maintenance.— Box 7865, c/o The Electrical Review. trical Review. A D V E R T ISE R (53), offers very wide experience all N G IN E E R with personality and good contacts. 7 years branches. Sales Office Administration, Home and E in charge contracts dept, of London electrical engi­ Export. Efficient and economical controller. Details, neers and contractors, four years consulting, wide experi­ salary, etc.— Box 7820, c/o The Electrical Review. ence private, industrial and Ministry work. Anxious to .M .I.E.E. (34), E .H .V . Switchgear and Motor Control, join established Goncern with prospects.— Box 7873, c/o A specialist complete distribution schemes, 17 years The Electrical Review. sales, contracts, publicity with leading manufacturers, in­ T ^ N G IN E E R (29), electrical, practical experience machin- side or outside position. £650 minimum.— Box 7862. c/o ing, inspecting, winding, maintaining, instrument The Electrical Review. work, trouble shooting, expert D.C. motors, generators, N Electrical Engineer requires post. Experience in also alternators, considerable test bed experience, plant A practical mechanical engineering, design, costing, esti­ layout, design of special equipment, used to control of mating. manufacturing and sales of all types rubber and labour, seeks administrative or progressive post with go- paper cables, contracting, M .V. and E.H .T ., underground ahead firm. Free now.— Box 7879, c/o The Electrical and overhead, installation of transformers, switchgear and Review. generators, testing, fault location. Accustomed to super­ T ^ X E C U T T V E , 20 years’ experience in telephone industry, vision of staff, jointers, linesmen and labour. Welfare, office and shops control, seeks post as Manager, mains records, wages and accounts, etc.— Box 7889, c/o technical or non-technical, or similar executive position in The Electrical Review. London area. Age 40. Salary approx. £450.—Box 7831, c/o The Electrical Review. R M A TU R E Winder (44). desires change; would seek O REM AN Electrician, 20 years’ exper. all systems A release for suitable job. Thorough, practical, F contracting and maintenance. London or Lancs.— Box experienced repair shop man. A.C. and D.C. repairs, 7854, c/o The Electrical Review. rewinds up to 3.000 kW. Able to take charge. 1 1 years present situation.—'Box 7806. c/o The Electrical Review. /G L A S S W O R K S Foreman; 20 years’ experience, ïully R M Y Captain, Public School, age 37. married, just conversant mixing, smelting; specialist in hand- blowing of bulbs, familiar machine blowing.— Box 7899. A released from overseas, requires appointment with engineering firm. 12 years’ experience in electrical con­ c/o The Electrical Review. tracting in London and the country, including the complete /G R A D U A T E I.E .E ., wide technical and representative installation of power plant, lighting, heating and cooking. experience, desires progressive post, preferably on Many pre-war connections with London architects and export work. Knowledge of French and Spanish.— Box consulting engineers.— Box 7908, c/o The Electrical 7813. c/o The Electrical Review. Review. IGHT-current Engineer, 12 years’ experience in tele­ .Sc., age 38. designer of transformers, motors, relays, L phony, carrier current equipment, research, design and B rheostats, free.—-Box 7830, c/o The Electrical administration, high academic qualifications, seeks respon­ Review. sible and progressive position in England.— Box 7844, c/o (C A B L E S Foreman, keen and progressive, with 20 years The Electrical Review. ^ comprehensive experience of power cables and adminis­ "V/TAN with specialised knowledge of Stores Systems. tration, desires change.— Box 7888, c/o The Electrical urging of bought out material and progress control of manufacturered parts, seeks position witth company /G H IE F Engineer instrument firm desires change. Pro- engaged,in the manufacture of domestic heating and cook­ ^ duction. design, sales. Fully conversant modern ing appliances.— Box 7860. c/o The Electrical Review. methods. Write—Box 7876. c/o The Electrical Review. A R E R Insulated Cables. Production Manager (3>6). /C O R N W A LL. Electrical Engineer, age 36. requires P with 18 years’ experience, desires change, and seeks ^ executive position in Cornwall area. London trained, responsible position requiring organising ability, drive and experienced instaUation and maintenance, lighting, heating. personality. Highly qualified in efficiency, modern manu­ D ow er lifts neon signs and radio. Moderate salary for facturing and production controd methods.— Box 7908, sudabie situation—Box 7874. c/o The Electrical Review. c/o The Electrical Review. Nove, 6 4 E l e c t r ic a l R e v ie w N ovem ber 2, 1945

LA S T IC Moulding Foreman or Manager, with long prac- MODERN DIESEL GENERATING PLANT P tical experience, seeks progressive position. Would etiVAi start up new concern. Excellent references.— Box 7878, i-b.h.p. P E T T E R V E R T IC A L 4 -C Y L IN D E R COLD c/o The Electrical Review. 2 8 0 -’ ' STARTING ATOMIC DIESEL; new 1934, speed 0 0 , trpe LU M BER-Jointer, or Working Foreman. Mains, and 300 r.p.m., direct coupled to 200-kW M ETR O -V IC K . 400- tün-t am P equipments to 33 kV.— B ox 7897, c/o The Electrical volts, 3 -phase, 50-cycles Alternator with switchgear. Review. 200-b.h.p. CROSSLEY VERTICAL 3-CYLINDER i gieltft o ROGRESS. Buying, Stores, Transport. Executive COLD ST A R T IN G D IE S E L ; new 1942, speed 500 r.p.m.. .itair.p.n P position required by young man (28) with experience, vee rope driving 170-kVA B R U SH 400-volts, 3-phase, commonsense and unimpeachable character. Good refer­ 50-cycles Alternator with switchgear, new 1942. rolls ences and war record. Small concern preferred. Write— 150-b.h.p. CROSSLEY VERTICAL 3-CYLINDER ¡¡i0 .8Í.P C. H. Poole, 27, Lammas Park Road, Ealing, W.5. 3225 COLD ST A R T IN G D I E S E L ; new 1939. speed 500 r.p.m., ¡¡¡mpton ^ vee rope driving 170-kVA B R U SH 400-volts, 3-phase, ADIO and Electrical Sales Engineer seeks position as 50-cycles Alternator with switchgear, new 1939. i l l U P j / R Representative to firm of radio and electric appliance 150-b.h.p. CROSSLEY VERTICAL 3-CYLINDER manufacturers or wholesalers, N. of England preferred; 16 COLD ST A R T IN G D IE S E L ; new 1938, speed 500 r.p.m., years’ experience. Plenty of initiative and progressive vee rope driving 110 -k V A B R U SH 400-volts, 3-phase, m man.—Box 7850. c/o The Electrical Review. 50-cycles Alternator with switchgear, new 1942. E P R E S E N T A T IV E (Wholesalers’), solid connection 84-b.h.p. CROSSLEY VERTICAL 6-CYLINDER COLD 0 SSI R S.W . London, East Surrey, seeks change. Could ST A R T IN G D IE S E L ; new 1940, speed 1,000 r.p.m., direct treble present turnover with right backing. Commission coupled to 50-kW, 210-volt D.C. Generator with switch­ basis, would open branch if necessary and drive light van. gear (2 available). Exceptional opportunity to wholesalers desiring new 60-b.h.p. RUSTON VERTICAL 3-CYLINDER COLD ¡[IIIILT1 0 accounts.—Box 7800, c/o The Electrical Review. ST A R T IN G D I E S E L ; new 1936, speed 450 r.p.m., direct Q E N IO R Electrical Draughtsman and Engineer (36). coupled to 45-kW , 250-volt D.C. Generator with switch­ ^ qualified, experienced, and with good references, gear. tu m » seeks permanent position of trust. Industrial or public 47-b.h.p. RUSTON HORIZONTAL SINGLE-CYLIN­ .¡¡Batate» works installation, design, etc., and maintenance of plant. D E R COLD S T A R T IN G D I E S E L ; new 1940, speed 290 źp ,ie s. Good experience in field, office management, correspon­ r.p.m., belt driving 30-kW MAWDSLEY Alternator, 400 dence, specification, etc.—-Box 7901, c/o The Electrical volts. 3-phase, 50 cycles, new 1945. sais Review. 30-b.h.p. RUSTON VERTICAL 3-CYLINDER ELECT. K IL L E D Electrician, comprehensive practice and theory, ST A R T IN G D IE S E L ; new 1939, speed 1,000 r.p.m., direct îHOBiŒ® S desires responsible position of trust. Class A release. coupled to 15-kW B U L L 430/215-volt D.C. Generator R .N . petty officer, B .E.M .— Box 7886, c/o The Electrical with switchgear. Review. 16 - b.h.p. NATIONAL HORIZONTAL SINGLE­ nut i rriE C H N IC A L and Commercial Executive, Chartered Elec- C Y L IN D E R H A N D S T A R T IN G D I E S E L ; new 1936. trical Engineer, 20 years’ experience light engineering speed 400 r.p.m., direct coupled to 10.5-kW , 220-volt D.C. Mat«: and electrical machinery, wishes to contact manufacturer Generator. needing an Engineer Administrator for Technical Sales.— 6-b.h.p. CROSSLEY VERTICAL SINGLE-CYLINDER i i noil M HAND ST A R T IN G D I E S E L ; new 1940, speed 1,000 Box 7883, c/o The Electrical Review. «Kin O R K S Manager desires change, 35 years’ experience r.p.m.. direct coupled to 3-kW, 2 2 0 /110-volt D.C. Genera­ tor with switchgear. Iäfpöo W in design and production of small electrical units. London district preferred, but not essential. Excellent 3-h.p. COVENTRY CLIMAX VERTICAL AIR- references. Write— Box 7887, c/o The Electrical Review. COOLED P E T R O L E N G IN E ; new 1944, speed 1,800 r.p.m., direct coupled to li-k W , 25-volt D.C. Generator. OUNG Man (27), at present serving H.M. Forces, seeks HTE1 TUI Y progressive post; 6 years as electrician R .A .F ., study­ NEWMAN INDUSTRIES LIMITED, YATE, BRISTOL ing electrical engineering. Due release approx. Jan. 1946. —Box 7845, c/o The Electrical Review. ______3173 in SMBs i n ä » F O R S A L E ELECTRIC MOTORS In Mils for 400-v., 3-ph., 50-cyc. supply W k I» If,MBs Traders buying and selling hereunder must observe the te W it Restriction of Resale Order, S. R . & O. 1942 No. 958. (I Crompton Parkinson, 5 h.p., 2,900 r.p.m .; 5 Brooks V Motors, 5 h.p., 3,000 r.p.m., synch. S.C .R . type, con­ k W k tinuous rated for S.D. starting, completely overhauled, 'dB nutet i GEORGE COHEN, SONS & CO. LTD. ready for service. Price £12 each. h a llt e 1 Crompton, 9 h.p., K .R .N . class, slip-ring, totally i Fas Bi for enclosed type, 710 r.p.m. P r ic e £5. 1 Metro-Vick., 18 h.p., short rated slip-ring, totally GUARANTEED ELECTRICAL enclosed type, 700 r.p.m. P r ic e £10. IMM. 1 Burnand, 4 h.p.. Squirrel Cage, 1,450 r.p.m., double fes» Tdíiffl: PLANT. shaft extension. P r ic e £3. (The above 3 motors require overhauling.) MOTORS, GENERATORS. 1 Verity Aston, 1$ h.p., 220 v. D.C., shunt wound, 600/800 r.p.m., overhauled read for service. P r ic e £5. ELECTRIC I I SWITCHGEAR. All prices quoted are ex Works and the motors are offered subject to being unsold. Mannit etc. BEATSON, CLARK & CO. LTD., • S 1? ® & WOOD LANE, LONDON, W.12. STALRFOOT. NR. BARNSLEY. Telephone: Shepherds Bush 2070 3251 and STANNINGLEY, NEAR LEEDS. MOTOR GENERATOR SETS Telephone: Pudsey 2241. Established 1834. 1 G .E.C., input 460 volts D.C., output 12 kW. 400 volts, 27 3-phase, 50 cycles (four wires). 1 Crompton Parkinson, input 400 volts, 3-phase, 50 cycles, output 9.6 kW. 80 volts D.C.. with Control Gear. D R Y CELLS 1 Newton, input 220 volts D.C., output 90 volts, 190 amperes D.C. LD-established battery firm in production of 1 L .S .E ., input 400 volts, 3-phase, 50 cycles, output 4.8 O all types of Dry Cells. D .R .3 speciality. kW, 80 volts. 60 amperes D.C.. with Control Gear. Delivery ex works. Quotations by request. 1 Mawdsley, input 460 volts D.C., output 338 volts. 1- Contracts invited. phase, 50 cycles, 36 amperes, with Control Gear

THE ABIES BATTERY CO., OLDFIELD ENGINEERING CO. LTD., StOSHO 117, ANERLEY ROAD. ANERLEY, S.E.20. 96. EAST ORDSALL LANE 63 SALFORD, 5. X ' f ’iiber 2, 1945 E l e c t r i c a l R e v i e w 6 5

p l a n t f o r s a l e VARIABLE SPEED D.C. MOTORS 460 v o lts . P ip e V e n tila te d 1 4«uU’ u iV - ‘ l’n" , r (Hickbridge). machine No. 10668. 400/440 tv iv r t v hr^ ar>' volts 10.750, secondary volts 80 h.p. 700/1.000 revs. L.D.M. S u,'nfy so-primsTy 28 h.p. 880/1.200 .. "10 cubic llori,om ''»l > Yimpressor, rapacity - 00/ 10 h.p. 600/1,000 .. 4-74 h.p. 900/1.200 .. mta. .x r tS —o a O r.p.m.. r n m ^ machine T 1 V No. 00 F lhs- \ 150441 l w « o « rc inch per All complete with Floor Mounting Brookhirst Starting and - J , S r^U'! ',onS i 1 .'it011 Aut0 nchronous Motor. 75 b.h.p., Regulating Pillars. ' * J L * 2 Z \°.lu ,i4 0 - Phase S. cycles 50. Held amps. 90. stator amps. so. phase volts S90. GREENHALGH BROS., Burtons Field Mill, Atherton, nr. Manchester. 37 1 LVotupton Parkinson Auto Synchronous Starter. No. B4UA44, n.p. ,o. phase S. cycles 50, primary volts 140. amps. 90. exciter amps. S5. COX & DANiKS LTD. for A p p ly: MOTORS AND DYNAMOS. A.C. AND D.C. WILLIAM MILLS LTD.. DISTRIBUTION BOXES. SWITCHGEAR GROVE STREET. BIRMINGHAM. IS. Telephone : Smethwick 1156-7-S. Large Stocks—Prompt Delivery. S245 Visitors always welcome. FAGGS ROAD, FELTHAM. MIDDX. REBUILT MOTORS AND GENERATORS Tel. Feltham 8471/8.

ONG deliveries can often be avoided by purchasing L rebuilt secondhand plant. W e can redesign or replace large stock of Searchlights (sale or hire), also Winches surplus plant of any sire. A of our self-sustaining type. Hundreds of thousands supplied during the last 40 years to Government depart­ SEND US YOUR ENQUIRIES. ments. corporations and innumerable traders. Mirrors. Lenses, A .I.D . Turnbuckles, etc., also surplus Carbon Rods. OVER 1.000 RATINGS ACTUALLY IN STOCK HERE. Ebonite and Fibre.— London Electric Firm. Croydon. 42 number of portable Alternating Lighting Sets, fully DYNAMO & MOTOR REPAIRS LTD.. A guaranteed, for Quick delivery. 14-SkV A , 2 3 0 /1/5 0 .— The Electroplant Co.. Wembley. Middlesex. 3243 Wembley Park, Middlesex. A Quantity of nearly new Storage Cells by Young. 350- Telephone : Wembley 8 12 1 (4 lines). amp-hour capacity at 10-hour rate, heavy duty, only a few weeks old. fully charged. Further Quantity of Also at Phoenix Works, Belgrave Terrace. Soho Road, new Cells, 100-amp.-hr. cap. Full details from— G.P.U. Handsworth. Birmingham. Ltd.. Wembley. 3244 BO UT one ton of Polished Black Bakelite Cuttings. Telephone: Northern 0S9S. A 4" thick, in pieces approx. 6' x S " ; 100 16 " new Benjamin Electric Shades; 300 10" ditto.—J. J. Dewhurst. The Mill, Duddington. Nr. Stamford. Lincs. 3 2 11 A C. and D.C. House Service Meters, all sizes. Quarterly WATER TUBE BOILERS IN STOCK and prepayment, reconditioned, guaranteed one year. Repairs and recalibratious.— The Victa Electrical Co., 47. Two 55.000 lbs. evaporation. 270 lbs. W .P. Battersea High Street. S.W .ll. Tel. Battersea 07S0. 19 Two 25.000 lbs. .. 250 lbs. .. .C. and D.C. Motors, all sizes, large stocks, fully • Two 25.000 lbs. .. 17 5 lbs. .. A guaranteed.— Milo Engineering Works, Milo Road. Three 20.000 lbs. .. 17 5 lbs. .. East Dulwich. S.E .2 2 (Forest Hill 4422). 752S Two 16.000 lbs. .. 190 lbs. ., .C. Motors. l/50 th h.p. to 10 h.p., from stock. Also One 12.000 lbs. .. 200 lhs. „ A D.C.— The Johnson Engineering Co.. SO. Great Port­ 0ne9/10,000 lbs. .. 200 lbs. .. land Street. London. W .l. T e l.: Museum 6373. 57 W e install complete, including brickwork. Economisers. A E R IA L Cables, all sizes Quoted for, good deliveries.— Pumps. Piping Valves. Generating Sets and Motors in Edwardes Bros., 20. Blackfriars Road, London, stock. Please send us your enquiries; we can give S.E.l. . 01 immediate delivery. A L L types of Transformers up to 15 kVA. including neon and fluorescent lighting chokes.— Woden Transformer BURF0RD, TAYLOR A CO. LTD., Co. (Phone. Bilston 41959), Moxley R d., Bilston. Staffs. 12 Boiler Specialists. Middlesbrough. ALTERNATOR. 200 kVA, 250 r.p.m.. 400/3/50, for Telephone: Middlesbrough 2622. coupling, perfect order. — The Electroplant Co.. 82 Wembley, Middx. 3242 A T T E R IE S . B-class only, all types available: contracts ELECTRIC MOTORS AND DYNAMOS B accepted for high tension, grid bias, cycle. 44-v. flat, bijou, baby batteries and unit cells (wholesalers and re­ tailers supplied). Also large range of other electrical 1 V E hold one of the largest stocks of New and Second- appliances.— Brooks & Bohm Ltd.. 90. Victoria Street. ’ ’ hand Motors. Secondhand machines are thoroughly S.W.l. Victoria 9550. 61 overhauled. Inspection and tests can be made at our E ST English Cables. 1/.044 up to 12 7/ . 103 deliveries Works. B —Edwardes Bros., 20. Blackfriars Road, London. S .E .l. 02 For Sale or Hire. Send your enauiries to :— /C A R B O N S, large stocks assorted sizes, solid and cored.— v-' Edwardes Bros.. 20. Blackfriars Road, London. BRITANNIA MANUFACTURING CO. LTD.. S .E .l. OS 22-26 BRITANNIA WALK. OR Immediate Delivery. Complete Generating Set. dTY ROAD. LONDON. N.I. F installed in 1940, and never put into service, as follows: 125 kVA Diesel-driven Alternator Set. comprising Telephone: 5512-S derkenwdl. IS 156-h.p. horizontal twin cylinder, cold starting Diesel Engine by Ruston & Hornsby, 260 r.p.m.. complete with BURDETTE A CO. LTD. all accessories and arranged for '* V ” belt, driving a 125 kVA Alternator by Metropolitan Vickers, wound for 400 Stock volts. 3 phase. 50 cycles. 1.000 r.p.m.. complete with switchboard and automatic voltage regulator.— George Cohen. Sons & Co. Ltd-. Wood Lane. London, W .12. teconditioned A C. and D.C. Motors and Starters Equal Telephone. Shepherds Bush 2070. 8170 to New. G E N E R A T I N G Sets for sale. 18 kVA, 400/S/50. petrol: V-T 24-kW. 220-v. D.C. Crude Oil Set.—Fyfe. Wilson & gjQjiJIIOUSE STREET, CLAPHAM. S.W.4. Co. Ltd.. Bishop’s Stortford. 3210 /C J.EN ER A TIN G Sets, petrol, paraffin and crude oil:D.C. Day and night service. MACaulay 4555 and A.C. for lighting, power, welding, etc.— Fyfe. Wilson k Co. Ltd.. Bishop’s Stortford. 3258 6 6 E l e c t r i c a l R e v i e w November 2, 1945

( \ E iT E E A T O R S for disposal: (a) Eleven 6-kW multiple Portable Pumps, petrol engine driven, with suction and V J A.C. /D.C. output Transformers and Generators coupled 3 delivery hoses, all in new condition, for disposal. to 16-h.p. compression-ignition engines, mounted on two- 3-h.p. engine coupled to self-priming pump, delivering wheel trailer chassis: (b) Five 3£/4£-kW dual A.C. single- 40/50 gallons per minute, against 50-lbs. pressure per phase/D.C. Generators coupled to 10-h.p. petrol engines, sq. inch. Enquiries, by letter, to The PoJce Engineer. mounted on channel iron framework. Complete specifica­ New Scotland Yard. S.W.l. _ tions and appointments to inspect on application, in writing, Q /Y h .p . Motors (3). 220 volts D.C., 700 revs., totally O A F enclosed, by E.C.C.. with starters, identical machines. to— The Police Engineer, New Scotland Yard, S .W .l. 3202 .E .E . Journals 1888— 1945 for sale, cheap, in separate —Box 3123. c/o The Electrical Review. P A - l i . p . Russell 6l Newbery 4-cylinder petrol start I parts or volumes.—Box 7909, c/o The Electrical ' J ' J Paraffin Engine, new 1918, 550 r.p.m., direct coupled Review. - T N S U - Glass covered Plain or Enamelled Instrument to 30-kW, 220/240-volt, 136 /125-amp. Shunt Generator on -L Wires, No. 18 s.w.g., No. 40 s.w.g.. stock deliveries.— common bedplate, in good condition, complete with switch­ Saxonia, Roan Works, Greenwich, S .E .10 . 29 board and cooling tanks. May be seen running.— Box T EAD-covered and Arm our ed Cables. P .I. and V .I.R ., 3207. c/o The Electrical Review. J —^ various special lines at low prices.— Edwardes Bros., 7 "Z Cycle Frequency Changer by Metro-Vickers. 73 kVA, 20, Blackfriars Road, London, S.E.l. 04 * 3-phase, 400 volt, 100 a.m.p.. 700 r.p.m. V Belt T E S L IE Dixon & Co. for Dynamos. Motors. Switchgear. driven from 27.5 h.p., 400 v ., 3-phase, 50 cycle motor, -L^ Chargers and Telephones.— 214, Queenstown Road. complete with 40 h.p. Stardelta starter £300, f.o.r.. can Battersea. S.W .8. Telephone, MACaulay 2159. Nearest be seen running.— J . O. Grant & Co. Ltd ., Pendleton. Rly. Sta.: Queen's Road, Battersea (S.R.). 18 Salford. 6. 3249 T IS TE R 10 .5 kW Diesel fully-automatic generating set 7 £7 and 30-h.p. National Diesels; 35-kW Browett Steam J - i 210 /220 v. D.C. for disposal. Fist-class condition, * Set. 220 vo. D.C.; Weir Feed Pump, 8£" x 6" x seen ru n n in g by appointment. Offer required.— John 1 3 " ; Lancashire Boiler, 24 ' x 7 ', 120 lbs. w .p .; Fuel Oil Shaw & Co. Ltd., Vane Street Works, Hull. 7819 Tank, 24 ' x & ; 35-kW Tangye Diesel and Dynamo, 220 \ f O T O R Generator Sets and Convertors, all sizes and vo.; 250-kW Steam Generating Set, 220 vo. D.C.—Harry voltages from £ kW up to 500 kW in stock.— H. Gardam & Co. Ltd. Staines 98. 60 Britannia Manufacturing Co. Ltd., 22/26, Britannia Walk. I A A h.p. “ Laurence Scott” Slipring Motor, 400/3/50, City Road. London, N .I. Telephone, Clerkenwell 5512. -LV JA F screen protected, ball bearing, 930 r.p.m. 5513 & 5514. „ ^ 2 8 Complete with “ Allen West ” oil immersed Starter. "V T A M EP LA T ES, Engraving. Diesmkmg. Stencils, Steel Date 1941. — Stewart Thomson & Sons. Fort Road. LT Punches.— Stilwell & Sons Ltd ., 15 2, Far Gosford Seaforth, Liverpool, 2 1. 55 Street, Coventry. w . 14 ryk V A Alternator, 400 volts, 3-phase. 50 cycles, 750 NE English Electric LC. Totally Enclosed Horizontal revs., with direct-coupled exciter; also two 250- O Drawout Isolating Switch Pillar, type S .X .A .. suitable kW Rotary Converters, with transformers and switchgear. for 400-volt, 3-phase, 4-wire. 50-cycle supply. Ammeter. input 6,600 volts, 3-phase, 50 cycles, output 4 20 /210 volts Voltmeter, S.P. earth leakage relay. C .T .’s 22 0 /5 amps.. D.C.— Midland Counties Electrical Engineering Co. Ltd.. cable boxes for 4 x .15 P.IX.C. S.T.A. Cable. Pnce £75. Grice Street, Spon Lane, West Bromwich. 36 —Box 3074, c/o The Electrical Review. N E Ruston & Hornsby Twin Cylinder Horizontal Semi- ARTICLES WANTED O Diesel Engine coupled to 205-kW, 460-v., 175-r.p.m. G .E.C. compound-wound Generator. Apply — Borough Electrical Engineer and Manager, Douglas, I.O.M. 3075 REQUIRED N E 45-kVA, 1.000-r.p.m.. 400-volts, 4-wire. 3-phase. O 50-cycles, ball-bearing Alternator with exciter and switchboard, £250. Box 3098. c/o The Electrical Review E T T E R Diesel Generating Set. 20 kW, E.C.C P Dynamo 220 v., 91 a., direct coupled. Bargain, immediate clearance.— Rimming & Sons, Lyndhurst Road. T ) EQUIRED. AUTOMATIC COIL WINDING Worthing. 7906 J - V m a c h i n e s f o r e l e c t r i c a l c o i l O R C EL A IN Cleats, 2 and 3 groove, various sizes ex WINDING.— Box 38. c/o The Electrical Review. P stock, price list.— Edwardes Bros.. 20, Blackfriars Road. London, S.E.l. 05 O R C EL A IN Insulators, various sizes in stock, galv. 38 P spindles.— Edwardes Bros., 20, Blackfriars Road, London. S .E .l. 06 ELECTROSTATIC DUST PRECIPITATOR T 3 O T A R Y Converters in stock, all sizes*, enquiries J-t invited.—Universal Electrical, 221, City Road. wanted for Ores. London. E .C .l. 10 Q EV E R XL Telescopic Tower Ladders ready for essential Firms able to quote please write work. Extensions. Trestles and Steps to order.— Shaftesbury Ladders Ltd., 453, Katherine Road, E.7. METALS & ALLOYS (B HAM) LTD., Grangewood 3363. la Q P E C IA L line Bell and Telephone Wires, also screened FORGE LANE. KINGSBURY ROAD. ^ wires, large quantity, clean.— Edwardes Bros., 20. MTNWORTH. BIRMINGHAM. Blackfriars Road. London, S.E.l. 07 3194 T A F F Time Checking and Job Costing Time Recorders S (all makes) for quick cash sale. Exceptional con­ A C E T A T E and other thermoplastic scrap: polythene dition. Write — Box 528, Smiths, 100, Fleet Streeet. and P.V.C . in any form; also scrap cable and in­ I/ondon. E.C.4. 31 sulated wire; urgently wanted.—Elton Levy & Co. Ltd.. TEAM Turbine. Fraser & Chalmers Standard Multi- 18, St. Thomas Street, S.E.1. 30 Stage Back Pressure Steam Turbine. 600 h.p., coupled g A 0 TOMA TIC Exhaust Machine for vacuum electric lamp to David Brown Reduction Gear. 6,000 to 300 r.p.m., in manufacture. Full particulars and price to — Box excellent secondhand condition.— London Brick Company 3208. c/o The Electrical Review. Limited. Africa House. Kingsway. London. W.C.2. 3239 XT' N G IN E E R IN G Technical Books (new or secondhand) W ITCH and Fuse Units, Conduits and fittings, works wanted in any quantity. Attractive cash offers. Call S requirements stocked.— Edwardes Bros.. 20. Black­ —Third floor, 356, Oxford Street. W .l, or “ Stoneleigh." friars Road. London, S .E .l. 08 St. George’s Avenue. Weybridge. 62 W ITCH BO AR D S suitable for dynamos and alternators, T ^ O R many years we have specialised in the purchase of S all sizes from 100 amp. up to 1.500 amp.— Britannia surplus electrical equipment of every description. We Manufacturing Co. Ltd.. 22/26, Britannia Walk. London. are interested in A.C. and D.C. Motors for re-use. Trans­ N .I. 25 formers. Storage Batteries, and Cable for scrap, etc. Please rpRANSFORMER Lead-in Wire. 7/38 and 14/38 s.w.g., send your enquiries to— S. Cohen & Sons, Britannia Wharf. -L Insu-Glass finished, various colours, stock.— Saxonia. Copenhagen Place. E .14 , and to Dynascrap Works. London Greenwich. S .E .10 . 34 Road, Barking. Established 1870. Telephones, East 3844 .R .S. Cables and Flexibles. Welding Cables supplied.— (3 lines) and East 3360. 3007 T Edwardes Bros., 20. Blackfriars Road, London. L A T IN G Generators or Rectifiers. 10-20 volts. 500-1.000 S .E .l. 09 P am ps.: also plating, polishing and spraying plant.— rr 30in. Streamline Electric Fans, 400 v. three-phase. Somerset Metal Crafts Ltd.. 89 Station Rd.. Taunton. 7882 two-speed. 2 5 h.p. D.C. Open Type Motors 400 v.. E D U N D A N T stocks of 1 . 2, 3. 5 & 7-mm. Wire. Flex shunt wound.— Meers (Eng.) Ltd.. 22 Sun St.. Canterbury. R and Cables of all descriptions. Please send samples and 7890 prices to—Alec Davis. 8. Percy St.. London. W .l. 3198 November 2, 1945 E l e c t r i c a l R e v i e w 67

R ° ™ Convertor, input 6.600 volts, 3-phase. 50 A T T E R Y Manufacturers offer total output of wireless suitahle PU*' '*00/460 volts D.C. complete with B and lighting batteries on sole agency basis to well- X of ? r ir \ n.d sorting panel. Will consider established distributors. Quality-shelf life fully guaran­ Full narthMiinre i*r ^ree thousand kilo-watt capacity, teed.— Box 3177, c/o The Electrical Review. trhal Review and pnce t o - B OI 3116 , c/o The Elec- LE C T R IC A L Engineer, A .M .I.E .E ., wishes Scottish E agencies in all Electrical Goods. Connections supply T ™ ? . 3Vl°i°f!"

EDUCATIONAL NOTICES MISCELLANEOUS A T T E R Y Chargers Modernised. Your old Charger made LATEST A.M.I.E.E. RESULTS B like new by specialists. Conversion from valve to metal rectification. Send for interesting leaflet, “ Q .D .” on this T N the recent Examinations held by the Institution of service.— Runbaken Electrical Products, Manchester, 1. 45 -1- Electrical Engineers 477 Candidates sat who had H O TO GR APH Y. Victory ends restrictions. For a taken B .I.E .T . courses. Of these 457 were successful in P permanent pictorial record of your war-time factory passing the examinations. We believe this record of 457 and products, for your peace-time advertising, catalogue successes out of 477 entrants has never before been and general purpose photographic illustrations, phone approached by any oral or correspondence tutorial Holborn 6858.— Miles & Kaye Ltd ., 100, Southampton organisation, and indicates the very high efficiency of Row. London, W .C .l. Specialists in commercial and the modern system of Technical training which we have industrial photography for over 60 years. 3246 laid down. RANSLATIONS, quick and accurate. Enquiries invited. The B .I.E .T . tutorial organisation is waiting to assist T — John Radcliffe, A .I.L ., Rainworth, Mansfield, Notts. you either with a short specialist course or complete 7826 training for a recognised examination. We have available a large full-time staff of instructors, while the efficiency of our extensive organisation is a byword among engineers.

WE GUARANTEE—“ NO PASS—NO FEE ”

May we send a copy of “ E N G IN E E R IN G OPPOR­ T U N I T I E S ” ? Containing a great deal of useful advice and detailed information on over 200 Home-Study Courses and examinations, this handbook is of very real value to the ambitious engineer. Our highly informative handbook will be sent F R E E and without obligation on request.

BRITISH INSTITUTE OF ENGINEERING TECHNOLOGY. Established 1927—over 200,000 students. 12, S h a k e s p e a r e H o u s e , 17, 18 & 19, S tr a tfo r d P la c e , Oxford Street, London, W .l. 33

ENGINEERING CAREERS AND QUALIFICATIONS

T > O T H Government and industry have announced and -■-* emphasised that young men with technical know­ ledge and qualifications must receive every chance of rising to the highest posts within their capacity in post­ war engineering and allied industry. Write to-day for ” The Engineer’s Guide to Success ” — 200 courses— free— which gives particulars of the first-class training supplied UTHOLITE INSULATORS & by the T.I.G .B . for the A.M .I.E.E.. A.M.Inst.C.E.. A.M.I.Mech.E., A.F.R.Ae.S., A.M .I.P.E., B.Sc.(Eng.), ST. A LBA N S M O U LD IN G S LTD C. & G., etc., examinations in which T.I.G .B . home-study students have gained 44 F I R S T P L A C E S A N D O V E R 1,000 P A S S E S . The Guide covers careers in all branches. Electrical, Mechanical, Radio, Aeronautical, etc. WATFORD THE TECHNOLOGICAL INSTITUTE OF GREAT BRITAIN, 'PHONE : WATFORD 4494 35. TEMPLE BAR HOUSE. LONDON. E.C.4. 77

hqv. id ^ ^ e m b r a N 0^

BY COURTESY OF T.M.C.-HARWELL (SALES) LTD.

BRITANNIA HOUSE, 233 SHAFTESBURY AVENUE, LONDON, W.C.2 Telephone : TEMple Bar 0055 (3 lines) Telegrams : '* Arwelldite, Westcent, London ** Novem ber 2, 1945 E l e c t r i c a l R e v i e w 69

To PREVENT damage to your Electric Cables by fire PROTECT them with NEWALLS MOULDED ASBESTOS Full particulars from:— Newalls Insulation Co. Ltd.

W A SH IN G T O N , Co. DURHAM

Two or three arm lamp brackets can be supplied at an extra cost.

Stan dard ra tin g — 60, 80 and 120 V / A m ax. Volts 440, min. SFORMER V o lts 12 M ade by THE CONCORDIA TRANSFORMER CO. T a subsidiary o f THE CONCORDIA ELECTRIC SAFETY LAMP CO. LTD. This low-voltage unit of maximum efficiency and safety incorporates Telephone : a double-wound trans- A B B ey 4266 ormer (to B.S.S. 794) and double-pole switch with 4 fuses (2 H T and 2LT) all m o u n te d on a readily re m o v a b le G as Oven ty p e d o o r, the opening o f w h ich breaks both circuits. The HT 0 0 O’ Terminals have safety shields. T w o spare fuses for each circuit are S) II mounted in th e case. A I D. A P P R O V E D SOLE SALES AGENTS : I.C.1 •ent, London" IKORDIA UNITED, 2 CAXTON ST., WESTMINSTER, S.W. 7 0 E l e c t r i c a l R e v i e w November 2, 1945 Ipun p a g e Dewhurst & Partner Ltd ...... Index to Advertisers Dolphin Engineering Co. Ltd ...... 34 PAGE Donovan Electrical Co. Ltd ...... 94 Downes & Davies...... 44 Acorn Machine Tool Co. (1936) Ltd ...... 40 a Aerialite L td ...... 14 D.P. Battery Co. Ltd ...... 14 Associated Fire Alarms Ltd ...... 90 Du Bois Co. Ltd ...... 88 Baldwin Instrument Co. Ltd ...... 80 Duratube & Wire Ltd ...... ■ • • • ■ 94 Benham & Sons L td ...... 76 Elcordia Ltd ...... 46, 69 & 92 Bill Switchgear Ltd ...... 3 Electrolux Ltd ...... 24 Birmingham Mica Co. Ltd ...... 88 Ellison, George, Ltd ...... 48 Britannia Batteries Ltd ...... 87 English Electric Co. Ltd ...... 9 Britannic Electric Cable & Construction Co. Ltd ... 91 Ensel Electric Co. Ltd ...... 80 British Central Electrical C o. L td ...... 38 Evans, Adlard & Co. L td ...... 86 British ElectricTransformer Co. Ltd ...... 6 Evans, F. W., Ltd ...... 92 British Insulated Callender’s Cables Ltd ...... 93 Everett Edgcumbe & Co. Ltd ...... 52 British Jewel Manufacturing Co. Ltd ...... 42 Evershed & Vignoles Ltd ...... 15 British Klockner Switchgear L td ...... 98 Falk, Stadelmann & Co. Ltd ...... 26 j# í>¡ British Thomson-Houston Co. Ltd ...... 5 Ferguson, Pailin Ltd. Browning’s Electric Co. Ltd ...... Cover iii Ferranti Ltd ...... Flextol Engineering Co. Ltd Bruce Peebles & Co. Ltd ...... 2 Brush Electrical Engineering Co. Ltd...... 41 Fox, P. X ., L td ...... French, W. T., & Son Ltd.. . Bryterlite Electrical Supplies Ltd ...... 84 Friedland, V. & E., Ltd ...... Bull Motors...... 50 Fry’s Metal Foundries Ltd ...... 21 Bullers Ltd ...... 4 General Electric Co. Ltd ...... 56 Burco L td ...... 51 Burdette & Co. Ltd ...... 54 Godwin, H. J., Ltd ...... 95 Hall, John, (Tools) Ltd ...... 86 BX Plastics Ltd ...... 45 Hampton Works (Stampings) Ltd ...... 95 Bylock Electric Ltd ...... 90 Canning, W., & Co. Ltd ...... 49 Harcourts Ltd ...... 74 P i Cascade Water Coolers Ltd ...... 42 Harrison & Co. (Lincoln)...... 46 Celestion Ltd ...... 92 Hart Accumulator Co. Ltd ...... 92 16 Clifford, Charles, & Son Ltd ...... 71 Harvey Frost & Co. Ltd.. Collins Electrical Ltd ...... 3 Hedin L td ...... p m Consolidated Pneumatic Tool Co. Ltd ...... 7 Helios Laboratories...... Copper Development Association...... Cover ii Henley’s, W. T., Telegraph Works Co. Ltd. ¡itmítri Crabtree, J. A., & Co. Ltd ...... 19 Hildick & Hildick ...... Cressall Manufacturing Co. Ltd ...... 94 Hoffmann Manufacturing Co. Ltd ...... tijffn h Crompton Parkinson Ltd ...... 35 & 81 Hopkinson Motors & Electric Co. Ltd ...... lineiipe Hotric L td ...... Darwins Ltd ...... 32 rtWn'ft Davis & Timmins Ltd ...... 98 Hyde, J. B., & Co. Ltd ...... Delco-Remy & Hyatt Ltd ...... 84 Igranie Electric Co. Ltd ...... m taifa {Continued on page 72) Dennis, G. P., Ltd ...... 40 jíStrip I Latein nil Miedśnp BRIGHT STEEL HEXAGON»?»«

ifapiútfa ikßtitni NUTS UTmj, Manufacturing Guaranteed Electrical and Light Accuracy to Aircraft Mechanical Also made in brass Engineering for all electrical purposes including • LABORATORY AND TEST oil circuit breakers, EQUIPMENT, etc., etc. INDUCTANCES OF ALL TYPES FOR TRANSMITTERS VISLO FOR HOME AND TROPICAL USE ENGINEERING

A.I.D. Fully Approved Admiralty and Air Ministry, etc. MARKET JOYCE ENGINEERING LTD. HARBOROUGH 25 Finchley Lane, Hendon, London, N.W.4 Phone: 2245 (3 lines) Phone: H EN do n 7437-8-9 Novem ber 2, 1945 E l e c t r i c a l R e v i e w 7 1 '

Borehole Pumps including For Submersible Pumps all depths and For Public, Industrial and Domestic Water Supply working conditions Pulsometet engineering C ll, ttine eim s Ironworks. Readme) CHARLES CLIFFORD Your enquiries invited P ro d u c ts for early deliveries of INCLUDE BRASS, COPPER & PHOSPHOR BRONZE and the undernoted SPECIALITIES

Tubes Copper Tubes for all purposes. Brass Tubes in various alloys and specifications. A lum inium Brass Condenser HOTRIC Tubes“Al-dur-bra” Pat. N o. 308647. Phosphor Bronze Tubes , Thermal Storage Heaters solid-drawn. G un M etal Tubes , solid-draw n. • in following capacities. ’___ Sheet & Strip Brass and Copper Sheet and Strip to any specification and in suitable tem per fo r requirem ents. Phosphor I£ gallons, 3 gallons and _ Bronze Sheets and Strip . 20gallons “ Duplex.” E f l H E ) - Castings Chill-cast Phosphor Bronze and G un M etal Bars. Also Immersion Heaters I I ł l R ods Phosphor Bronze Rods (Drawn). Gun M etal Rods I (Drawn). Z inc B attery Rods. (I, 2 or 3 k.w.) for con­ Wire AU W ires for the M etallisation process of M etal verting existing Hot t!S(j Spraying. Zinc W ire. Phosphor Bronze W ire. Water Systems. rQCy (0 Ingots Phosphor Copper. Phosphor Tin. HOTRIC LIMITED Sales Office: 198 F o re S t., E d m o n to n , N .I8 CHARLES CLIFFORD & SON LTD Telephone : Tottenham 1321 WORKS AT: FAZELEY STREET MILLS, Head Office : Hotrio Works, Broxburn, W est Lothian, Scotland BIRMINGHAM 5 (HEAD OFFICE) & DOG POOL MILLS, BIRMINGHAM 30 Gfl

m l | RELIABILITY- ACCURACY- ECONOMY WRITE FOR TREATISE SPARKLETS TO :— PRANA’ PRESSURE SPARKLETS LTD.. DIE CASTINGS DIE CASTINGS DIVISION, LONDON, N.I8. f r f » i 7 2 E l e c t r i c a l R e v i e w Novem ber 2, 1945 PAGE Pulsometer Engineering Co. Ltd ...... 71 Index to Advertisers Pyrene Co. Ltd ...... 22 Radio Instruments Ltd ...... 2J {Continued from page 70) page Rawlplug Co. Ltd ...... ° Injection Moulders Ltd ...... 28 Reliance Electrical Wire Co. Ltd ...... 95 International Electrolytic Plant Co. Ltd ...... 30 Revo Electric Co. Ltd ...... JO Jackson Electric Stove Co. Ltd ...... 29 Reyrolle, A., & Co. Ltd ...... 39 Johnson & Phillips Ltd ...... 23 Robinson, Lionel, & Co. Ltd ...... 36 Joyce Engineering Ltd ...... 70 Rockman Engineering Co. Ltd ...... 88 Keighley Lifts Ltd ...... 78 Romac Industries Ltd ...... 26 Kerry’s (Great Britain) Ltd ...... 90 Rotunda Ltd ...... 46 Key Engineering Co. Ltd ...... 98 Runbaken Electrical Products...... 92 Klaxon L td ...... 74 Service Electric Co. Ltd Cover iii Lancomotors Ltd ...... 78 Siemens Electric Lamps & Supplies Ltd ...... 1 Langley London Ltd ...... 44 Simmonds & Stokes Ltd ...... 32 Laurence, Scott & Electromotors Ltd Cover i Smith, Frederick, & Co ...... 37 Litholite Insulators & St. Albans Mouldings Ltd... 68 Sordoviso Switchgear Ltd ...... 12 Londex L td ...... 98 Sparklets Ltd ...... 71 Macintyre, James, & Co. Ltd ...... 46 Spicers Ltd Cover iii M. & C. Switchgear Ltd ...... 31 Spiral Tube & Components Co. Ltd ...... 94 Measurement Ltd ...... 55 Standard Telephones & Cables Ltd ...... 18 Measuring Instruments (Pullin) Ltd ...... 89 Stanton & Co ...... 72 Mek-Elek Engineering Ltd ...... 85 Static Condenser Co. Ltd ...... 74 Mercury Switch Mfg. Co. Ltd ...... 40 Switchgear & Cowans Ltd ...... 47 Mersey Cable Works Ltd ...... 16 Symonds, R. H., Ltd ...... 94 Metallic Seamless Tube Co. Ltd ...... 79 Taylor Tunnicliff & C o. L td ...... 77 Metropolitan-Vickers Electrical Co. Ltd ...... 75 T.M.C.-Harwell (Sales) Ltd ...... 68 Midland Electric Mfg. Co. Ltd ...... 25 Transformer & Electrical Co. Ltd ...... 90 Monmer Foundry Ltd ...... 86 Tudor Accumulator Co. Ltd ...... 2 Mullard Wireless Service Co. Ltd ...... 26 Tullis Russell & Co. Ltd ...... 83 Multicore Solders Ltd ...... 97 Uhlhom Bros. Ltd ...... 80 Neill, James, & Co. (Sheffield) Ltd ...... 34 Vacuums Ltd ...... 98 New Insulation Co. Ltd...... 78 Venner Time Switches Ltd ...... 38 Newalls Insulation Co. Ltd ...... 69 Verity s Ltd ...... 53 Newey Engineering Co. Ltd ...... 97 Vislok Engineering Ltd ...... 70 Painton & Co. Ltd ...... 78 Walker, Crosweller & Co. Ltd ...... 80 Panniter, Hope & Sugden Ltd ...... 73 Walsall Conduits Ltd ...... 27 Pearson, C., & W. P. Beck Ltd ...... 97 Walters, Austin, & Son Ltd ...... 89 Perkins, F ., L td : ...... 33 Ward & Goldstone Ltd ...... 85 Petters Ltd ...... 43 Ward, Thos. W., Ltd ...... 91 Philips Lamps Ltd Cover iv & 96 Watford Instruments...... 72 Poles Ltd ...... 97 Weekes, L., (Luton) Ltd ...... 12 Pope’s Electric Lamp Co. Ltd ...... 20 Westinghouse Brake & Signal Co. Ltd ...... 82 Power Equipment Co. Ltd ...... 28 Westminster Laboratories Ltd ...... 36 Predico Ltd ...... 40 Wingrove & Rogers Ltd ...... 24

«JIUJL.I PLASTIC [ M S PLUGS ^ ^ B.S.I. PAT. PEN. NO CABLE CLAMPS AND SCREWS

E A S Y T O

WIRE PROCESS TIMING • PROCESS CONTROLLING • '

EXTRA SPEED CHECKING SAFETY & CALIBRATION

I N U S E by Watford Instruments Equipment in every Industry Self-Aligning Current Pins WATFORD INSTRUMENTS STANTON & CO. 60 MOOR ST. LOATES LANE, WATFORD. HERTS BIRMINGHAM, Telephone : Watford 3944 ‘A F 2, 1945 N c ember E l e c t r i c a l R e v i e w (Supplement) 73

Chassis Type SWITCH AND FUSEGEAR for breaking capacity and thermal capacity

The chassis type of Aeroflex • switchgear embodies Aeroflex high breaking capacity rewirable cartridge fuses with their unique combination of properties : breaking capacity adequate to the highest category ; time-lag under operational overloads ; complete freedom from ageing ; no margin of unusable rating between full load current and blowing current ; easy SINE • and cheap rewirability. The switches are built in S I0LLIIS the form of robust self-contained chassis units, independent of the box. 'MW " PARMITER, HOPE & SUGDEN LTD. « B IS Longsight, Manchester 12 London : 34 Victoria Street, S.W.I 7 4 (Supplem ent) E l e c t r i c a l R e v i e w N ovem ber 2 , 1945

Window Lights THE STATIC will CONDENSER go up soon!

Manufacturers of

STATIC WRITE FOR " HARCORAY ” BROCHURE CONDENSERS ILLUSTRATING COMPLETE RANGE OF REFLECTORS FOR SHOP, STORE AND SHOWCASE LIGHTING.

liarcourts TOUTLEY WORKS,

STANHOPE HOUSE, KEAN STREET, W OKINGHAM, Berks

A L D W Y C H ,' W .C .2. Telephone : W OKINGHAM 7 0 Î Telephone: TEMPLE BAR 9<7l/2/3 Novem ber 2, 1945 E l e c t r i c a l R e v i e w (Supplement) 75 ¡AH Ih e world

L e ft: A “ Metrovick ” I 10 kV 3-phase outdoor transformer at a power station in Madras,

L e f t : A “ Metrovick ” II ,000 kVA outdoor transformer installed in Finland.

NAVIO m e t r o v i c k WVf . l U TRANSFO r m e r s ELECTRICAL ■ CO.. LTD. T R A F F O R D P A R K ••• M A N C H E S T E R 17.

EA/403 IMPROVE YOUR LIGHTING in consultation with METROVICK’S ILLUMINATING EN GIN EERS 76 (Supplement) E l e c t r i c a l R e v i e w November 2, 1945

PRESSURE ELECTRIC STEAMER The Live Steam Equivalent

T 'H IS electric steamer has the cooking A Pilot Light advantage of live steam heating, whereby B Control Switch C C Fuse Cover the interior of the fitting is automatically D W a t e r maintained under slight steam pressure. Stra in e r The fittings are supplied either with E Water Valve F Thermostat enamelled finish exterior, or may G Pressure- be standard black, if desired. Vacuum VaJve

BENHAM & SONS Ltd., 66 Wigmore Street, LONDON, W.l Branches at BOURNEMOUTH, MANCHESTER, BRIGHTON, DUBLIN, GLASGOW, CARDIFF, BIRMINGHAM

fX t

200, 100, 50, 25 watt. (All models can be supplied ganged) FOX TOROIDAL POTENTIOMETERS CERAMIC INSULATION ONLY — AND APPROVED FOR TROPICAL CONDITIONS (K.110). COMPLETE CERAMIC RINGS FOR STRENGTH. APPROVED BY ALL GOVERNMENT DEPARTMENTS EXCELLENT DELIVERY ON PRIORITY MINISTRY CONTRACTS ALL TYPES OF TOROIDAL WINDINGS

Telephone Horsforth P. X. FO X LTD. 2939 No. 2 FACTORY HORSFORTH YORKSHIRE

78 (Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945

ELECTRIC LIFTS

One of the most important features in connection with the rebuilding of Industry will be the modernisation of Electric Lift Se rvice . W e should be very happy to send a technical representative to advise on the best type of Passenger, Goods or Service Lift for your Offices, W orks or Canteen, without the slightest obligation. On account of the anticipated heavy demand on our services, your prompt enquiries would be greatly appreciated and will avoid possibility of long delivery delays. KEIGHLEY LIFTS Ltd. (Dept. 3) LONDON OFFICE :

l l i 9 Victoria Street, S.W .I. Phone : Abbey 4184 LEEDS OFFICE : Bardon Chambers, Infirmary St. Phone : Leeds 26518 m m KEIGHLEY OFFICE : Dalton Lane. Phone : Keighley 3298 ¡g y jj MANCHESTER OFFICE : ÏINÊS&fi B f Ü Haworth Buildings, 5 Cross St. Phone: Blackfriars2903 BIRMINGHAM OFFICE : Unitas House, 24 Livery Street. Phone : Central 6552 Sew insulation co. ltd., Gloucester BRISTOL OFFICE : 6 Unity St., College Green, I. Phone : Bristol 26974

LANCOMOTORS LIMITED NTGN Manufacturing _/ • Electrical • 'a m d i r í • Engineers • Specialists in the manufacture of COILS Shunt, Series, Commutating, Brake, Armature, etc., etc. Electric Motors and Equipment made to Customers' Specification

&&&

CLOUGH ST., HANLEY KINGSTHORPE NORTHAMPTON STOKE «ON «TRENT TELEPHO NE 237t-9 N ovem ber 2, 1945 Electrical Review (iSupplement) 79 8 0 (Supplem ent) E l e c t r i c a l R e v i e w N ovem ber 2, 1945

DEVELOPMENTS IN MEASUREMENT AND CONTROL

W e offer. manufacturers and process users a service on problems of measurement and control Jf . . a service based on scientific method, technical ingenuity and modern pro­ PLASTIC RAW MATERIALS duction, covering thg IN SHEETS, RODS & TUBES and Manufacture. EBONITE LAMINATED BAKELISED SHEET CASEIN CAST RESIN baLDWin ETC. INSTRUMENT COMPANY LIMITED CUMNOR, OXFORD originators and makers of scientific instruments 53, CITY ROAD for measurement and control LONDON, E.C.I

INDICATOR is a device for inserting in a pipe line to show at a glance the flow in the circuit. The liquid spins a chromium-plated ring under a glass dome. If the flow stops, the ring stops. Approved by the Admiralty.

WALKER , CROSWELLER 6- C O ..L T D CHELTENHAM GLOS. 61.1742 E.R .IS $ Novem ber 2, 1945 E l e c t r i c a l R e v i e w (.Supplement) 81

if BOOK THE 9th NOV. FOR THE E.I.B.A. t VICTORY BALL.

W h e n y o u i tubes

¡ED SHEET

OAD need quietness . E.CI

v t h e answer. • . r

f It is difficult to tell by ear whether the numbers and slot skew and the absence of a Parkinson “ Super-Silent ” M otor is run­ large ventilating fan also play their part. It is LOW ning or not. Extraordinary quietness has the ideal motor for heating and ventilating been obtained in both its electrical and systems in flats and offices and for all places TO« mechanical design. Sleeve bearings do where quietness is essential. The 2,000 or away with bearing noise. Low magnetic more types in the Parkinson A.C. ranges Mini P'i* flux densities, the correct selection of slot make it easy to find just the motor you need ct t f i e ( W liquid jpiw ij undif i W s t o p s . a g s ® CRompfon PRRKinson limited

¡15 CIECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W.C.2 and Branches, 82 ( Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945

A.C. supplies stabilised by this simple and static apparatus The Westinghouse A.C. voltage changes in either load or mains, stabiliser provides an undis­ compensation being complete i torted output voltage wave within { to l j cycles of the over a wide range of load, with supply. the output held within fine limits in spite of simultaneous Standard sizes from 80 to 1,200 variations in both input voltage V.A. for use on 190/260 volts and load. It responds very single-phase 50 c.p.s. A.C. rapidly indeed to sudden supplies. “STABILISTOR” THE WESTINCHOUSE A.C. VOLTAGE STABILISER WESTINCHOUSE BRAKE & SICNAL CO. LTD.» Pew Hill House, Chippenham,Wilts. ,1945 November 2, 1945 E l e c t r i c a l R e v i e w (Supplement) 83

IARDING

e U a t t c j i s OWES Electric POWER is a mighty u sinew of the nation's effort. It must be GUARDED against leakage. Tullis Russell Rothmill Cable le and Insulating Papers are called upon by leading cable manu­ facturers to perform this task, ad or in and it is carried out admirably ij compfc by these renowned, uniformly fdes of ‘ high-quality insulating papers. Rothmill Papers are guaran­ teed free from metals and grit. 180 to l i Write for details of the com 190260 »: plete range. qu Afl R O T H m iL L CABLE INSULATING PAPER T ulLi H *tuU tC e.iid . A u c h m u ty 8 c Rothes Paper Mills, Markinch, Scotlan d LONDON MANCHESTER BIRMINGHAM 1 Tudor 8t„ 872 Cern Exchange 116 Colm®’** R#f> Bid«» 8 4 (Supplement) Electrical R e v i e w November 2, 1945

BRAIDING AND INSULATING MACHINERY FOR ELECTRIC

These approved and certified WIRES AND CABLES Conduits and Fittings are consistently reliable under the most arduous conditions of service. You can specify none better. J. B. HYDE & CO. Ltd. HILDICK & HILDICK WALSALL TUBE WORKS WYTHENSHAWE PLECK ROAD W A L SA L L . WAHL.2f23. MANCHESTER

London Stores: 9 Howland Mews Wnst. Howlsn/ S t ..W I' Phone: Museum 6225

BRTTERLITE ELECIRKAl SUPPLIES LTD.

59 DAME STREET DUBLIN

are now arranging to provide a service of

EVERYTHING We still cannot give you the service we want to, but as always, we will do ELECTRICAL our best. Help us to help you by advising your to the Trade in Eire exact requirements before sending Motors for repair Manufacturers not already repre­ sented in that area are invited to communicate with us November 2, 1945 E l e c t r i c a l R e v i e w (Supplement) 85

M EKELITE Industrial Lighting Units are available with various lengths of arms and pillar. Bases for wall, bench or machine mounting ; for conduit or side entry with clamp for supply cable. Also heavy bases for portable use. Small reflectors for 12-volt lamps can be supplied.

Cmtelegue sent free en request.

MEK-ELEK Engineering Ltd.. 17 Western Road, Mitcham, Surrey ( MtV. hi l.'-.ftd'no 86 (Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945 JOHN HALL

(to o ls ) / l i m i t e d T r y t 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, ELECTRIC Grinding, Scurfing, Polishing, Flexible Disc Grinding, Screw Driving, Nut Setting, etc. Send for Catalogue No. F 22. TOOLS

C A R D IF F : 22-24 Morgan Arcade. BIRM INGHAM : 8 Snow Hill. BRISTOL : 5 Broad Quay and POWER-DRIVEN HAND TOOLS •ga Trode Mart 3 A u g u s tin e ’s Parade N EW PO RT : 81 High Street. K SW ANSEA : 93 Brynmor Road and ' More Power to your elbow * I Northampton Place. Sole Manufacturers and Patentees : i f Try any one of our depots for your elec­ FLEXTOL ENGINEERING CO. LTD tric tools they will help you all they can THE GREEN, EALING, LONDON, W.S ’Phones : EALing 6444/5/6. ’Grams: “ Dominating ", Ealux, London.

95-I3A

WE CAN EITHER SUPPLY’ USE or PREFERABLY MAKE THESE ADAPTORS H ® . IROM G?&( from Lampholders supplied by you — for speedy and HELIOS LABORATORIES economical production ! Send us your enquiries 6 Angel House, Pentonville Road LONDON, N.I. Telephone: TER. 2256-7 MONMER FOUNDRY L T D . ST. ANNES ROAD, WILLENHALL, STAFFS N ovem ber 2, 1945 E l e c t r i c a l R e v i e w (Supplem ent) 87

Safety Lighting in large buildings

Britannia Battery and Automatic Control V i i Equipment. Econo­ b I'I* mical in operation, simple to use, func­ tions without fail in an emergency. Com­ plies with Home Office requirements. Many cinemas and other large buildings r rely upon it. SAFETY LIGHTING SYSTEM

BRITANNIA BATTERIES LTD • REDDITCH • WORCS.

loi CLEAKK id! O IK T U M 1

Equip your electrically driverf machines with the “ right ” control gear — IGRANIC, which will give positive protection to motor and machine and keep them working to secure maximum production.

Illustration shows IGRANIC Contactor Panel for control of Travel motion of 6-ton Slab Charger for Steel Mill

IGRANIC ELECTRIC C°LTD BEDFORD & LONDON (,Supplement) E l e c t r ic a l R e v ie w November 2, 1945

FOR POST-WAR RADIO USE DU BOIS ‘Plus Quality HOPKINSON REBIN CORED SOLDER. Manufactured with Flux continuity MOTORS & ELECTRIC CO ' LTD assured, no bare patches are existent Grangeway ■ London NW6 Speedily makes Absolutely Telephone : Maida Vale 9306-8. a sound Me- / i n0"‘ chanical and A,muaKS3HHBiA corrosive Cables : Origimotor Kilb London Electrical joint After six years of war service A.I.D. we are ag ain devoting our full APPROVED productive cap acity to normal industrial requirements DTD 599 •

Being used by the We welcome Principal British enquiries for the supply of RADIO AND ELECTRIC A L EQUIPMENT ELECTRIC MOTORS manufacturers en­ ALTERNATORS • CONTROL GEAR gaged on A i r AND OTHER ELECTRICAL — EQUIPMENT Supply contracts. I-lb., 4-lb., 7-lb. and 10-lb. Reels You are Invited to send f o r details and samples of this special Solder with flux uniformly distributed ■S' 1 throughout the whole length. THE DU BOIS CO. LIMITED 16 BRITANNIA STREET, KING’8 CROSS. W.C.1 Telephone : Terminus 6624)5

Natural In all Grades and Qualities, Stove Micas, Plates, Washer«;, Commutator Seg­ MIGA ments, Condenser Films, etc. Moulding, Commutator, Flex­ ible, Heat-resisting Qualities, \ \ll^DU V T “ fJ s jTR Commutator Rings, Spools, MIGANITE Tubes, etc. Mouldings of any shape or form. Tubes, Plates, Washers, Sheets in all thicknesses, KESiST/IN ~ 8AKELITE etc. SEND TO THE MANUFACTURERS The BIRMINGHAM MICA Co. Ltd. 5 T N A R Y 5TKECT ttniGHTON L4NC South Road, Hockley, Birmingham BIRMINGHAM 16 BUCKHURST HILÜ Telegrams: “ Insulation. Phone, Birmingham.“ Phone : Northern 0118.

FOR 100% HEAT INCREASE There's a With Push-Button Wattage Control. ROCKMAN

Enquiries invited SOLDER PHONE GUN ARDwick 2672-3

Rockman Engineering Co. Ltd., 16-18 Russell Street, P ocJcm an MANCHESTER 1. EVERY TYPE OF WORK SOLDER CUN No. 5 i: Novem ber 2, 1945 E l e c t r ic a l R e v ie w (Supplement) 89 AU5TIN WAITERS & SON 1T9 PULLIN manufacturers o f INSTRUMENTS STORAGE EQUIPMENT

/ v r MAINTAINED ACCURACY

Bins and Shelving single and double-sided

RACKS for small parts

Removable Trays

SERIES 35 for panel mounting or as bench instruments Available either as single range panel instruments or mounted in sturdy bench stands, as illustrated, with up to three TOOL ranges self-contained. Scale length 3|". CABINETS Instrument size4|"x4f", panel opening 3y" 39 X 18" X IS" Can be supplied ( I ) Moving Coil— micro­ ammeters, milliammeters, ammeters, milli- Lock and Key voltmeters, voltmeters, ohmmeters, decibelmeters. (2) Rectifier — microammeters, milliam­ meters, voltmeters, decibelmeters. (3) Thermocouple — milliammeters, am­ meters, voltmeters. All available in all standard ranges.

STEEL WORK BENCHES MEASURING INSTRUMENTS 8 0" x 2 6 x 2 8 (PULL IN) LTD Two Lockers with Padlock and Key W IN CHESTER ST. . LON DON W.3 AUSTIN WALIERS « SON ITD All correspondence to be addressed to* : Phoenix Works, Gt. West Rd., Brentford, Middx. Ealing 0011 Old Trafford, MANCHESTER IS 90 ( Supplement) E l e c t r ic a l R e v ie w Novem ber 2, 1945

(GREAT BRITAIN) j jh ~ o ~ Formerly EAST LONDON RUBBER Co. Ltd

a LAMPS

Ironclad triple INDUSTRIAL FITTINGS pole quick make- and-break foot CABLE&WIRING SUPPLIES operated Switch. TYPE APS Full particulars on application. WARTON RD., STRATFORD DEWHURST & PARTNER LTD. LONDON. E.I5. (MARybnd 6611) INVERNESS WORKS • HOUNSLOW - MIDDLESEX Telephone: Hounslow 0085/8 Telegrams: Dcwhurst, Hounslow & BRANCHES Scottis^Cijfke^lo^il^thswooc^Sg

POWER TRANSFORMERS YOU'VE EARNED YOUR of Q U A L IT Y up to 3 5 kVA (As supplied to H.M. Government) REWARD * THE TRANSFORMER 4 ELECTRICAL CO. LTD. Ashford W orks, Ashford Road You have waited patiently for South Woodford, London, E .I8 supplies of vacuum cleaners. N o w you can have them. They Special prices for quantities are limited, true, but lack of quantity is offset by quality. The new 1946 BYLOCK F iR E H)T 7 'T T O A.R.P. “ Triplex” is a super-modern A LA RM £ > etC‘ cleaner that will sell itself. Retails at £12 .12.0 (plus tax) IRONCLAD WEATHERPROOF complete w ith all accessories. AND GAS- AND WATER-TIGHT TYPES FOR A.C. OR D.C. ALL VOLTAGES UP TO 250 BYLOCK ASSOCIATED FIRE ALARMS British made by "A HOUSEMAID" LTD. Bylock Electric Ltd.. . Ponders End, Middx. I N ITSELF, SUTHERLAND WORKS, ST. ANDREW RD. WALTHAMSTOW, LONDON, E.1 7 November 2, E l e c t r ic a l R e v ie w (Supplement) 91 BRITANNIC CABLES“

AN INDEPENDENT COMPANY, MAKERS OF E.H.T.

AND L.T. PAPER M AINS CABLES, VARNISHED CAMBRIC

C.T.S. M IN ING TRAILING. “ IVERITE ” INSULATED CABLES

AND THERM OPLASTIC CABLES (P.V.C.)

BRITANNIC ELECTRIC CABLE & CONSTRUCTION CO. LTD., IVER, BUCKS

Telephone : IVER 491 ; Telegrams: " BRITANNIC, IVER ” RECONDITIONED«. NEW ELECTRIC EQUIPMENT A.C. M OTORS— 400/440 VOLTS, 3 PHASE, 50 CYCLES. H.P. Maker Speed Type Rem arks 450 B.T.H. 600 Slipring Brush lifting and short circuiting gear 300 Mather & Platt 490 Slipring Roller Bearings 280 Mather & Platt 1500 Slipring 245 G.E.C. 490 Slipring Brush lifting and short circuiting gear 90 B.T.H. 975 Slipring Starter and Circuit Breaker 85 720 Slipring Oil immersed Starter 50 Crompton 580 Squir. Cage 50 G.E.C. 1450 Squir. Cage N e w 30 Bruce Peebles 720 Slipring S ta r te r 25 G.E.C. 960 Slipring G E N E R A T O R S : 165 K.W . G.E.C. Motor Generator Set, having a 245 H.P., 420 volt, 3 phase, 50 cycle, Slipring motor at 490 r.p.m. Direct coupled to a 165 K.W ., 480 volt, D.C. Generator, 344 amps.. Shunt wound with interpole. All on cast-iron Bedplate ; with Brush lifting and short circuiting gear ; liquid type rotor starter M O TO R C O N V ER T ER : Motor Converter by Bruce Peebles. Input 6600 volts A.C. 71.5 amps. 3 phase, 50 cycles at 428 r.p.m. Direct coupled on combined bedplate to a 750 K.W ., 7JU von Generator, La Cour patent ; with starter and Synchronising Switch.

Telegrams: Telephone: “ Forward, 26311 THO? W. WARD LIMITED Sheffield M (15 lin e s ) A L B I O N W O R K S -SHEFFIELD

LONDON OFFICE:- G ia n t's W h a r f 18-24 F o re S tr e a t BRETTENHAM HOUSE, LANCASTER PLACE BRITON FERRY SCOTSTOUN, GLASGOW, W.4 STRAND, W.C.2 ______\inem 92 ( Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945 HART concordia Storage CONTACTS B a t t e r i e s TUNGSTEN Electric Lighting a n d Po w e r Installations SILVER AND SILVER ALLOYS

IRlDIO \ \ m \ u PLATINUM • ••••••

BT AFBOIBT«ST TO H.*. TB* *158 Ma K KB? 05 ACOÜMÜLATORB-

HART ACCUMULATOR CO. LTD. Made by THE LONDON PLATINUM SCREW MFG. CO. LTD. MAR8HGATE LANE, 8TRATF0RD, LONDON, E 15 Telephone: MARyland I36I/3 Branches at ELCORDIA LIMITED Birmingham, Bristol, Cork, Dublin, Glasgow, Manchester 2 Caxton Street, W estminster, London, S.W.I Newcastle-on-Tyne • Nottingham and Westminster Telephone : ABBey 4266

BAKELITE MOULDINGS ERINOID T O A N Y TURNINGS SPECIFICATION FREDERICK W. EVANS LTD. AI PLASTIC WORKS t ’m+D LONG ACRE, BIRMINGHAM 7 MALI' TELEPHONE: EASt 1286 & 1237 tfüirt ide ELECTPfC ¿AMP

LOCKS Ä s i Lox-AII Locks tro "EVERBRITE" RECHARGEABLE Can be used with all bayonet- ertnsively used by Gnyt.Depti.. Moni- type lamp holders and the first siMlities. Public Recharged at home from TORCH cost is the last cost. Utility Cos. and your mains. No battery Indostnr oeneralhi required. Several hours 1 ^eereii continuous light. T h o u san d s in- use. F u lly guaranteed. The “ King Sales Representative : ^ W U I/ r of Pocket Lamps.” Direct PERCY PHILLIPSON or from Dealers. Send 169 Piccadilly, London, W .l for interesting Telephone : Regent I900 Leaflet Q50

Manufactured and Marketed by CELESTION LTD. London Road, Kingston-on- Thames. Kingston 5656 Novem ber 2, 1945 E l e c t r i c a l R e v i e w ( Supplement) 93

m i etc J n c lu s ir ia l CD m b lem We introduce to you a new industrial emblem which will in future identify the products of this Company. Its style symbolizes the merger of two famous companies and indicates that the vast resources of both are now combined to give even greater service to world industry. 94 (Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945

ASBESTOS WOVEN WIRE RESISTANCE NETS

•

COST SO LITTLE and HELP SO M UCH

W rite or telephone today for full details, and technical advice if required. CRESSALL is the registered trade mark of The Cressall M anufacturing Co. Ltd. Tower Street, Birmingham 19 Telephone: ASTon Cross 3463-4 Telegram s: "OHMIC.” Birmingham

EARTHING CLIPS WITH SPECIAL BITE AND CRIP INTO TUBE OR ARMOURING * 0 ty'uiAtwv’Uhy Note the tongue which «nsures perfect and permanent contact. Easy to fix. Nuts cannot turn. All sizes from half to two inches DURAWI RES D UR AC ABLE! THE DONOVAN ELECTRICAL CO LTD. BIRMINGHAM 9 Electrical Manufacturers and Stockholders

The Spiral Tube and Components Co. Ltd. Technioal Department OSMASTON PARK ROAD, DERBY Head Office - Honeypot Lane, Stanmore, Middlesex Telephones - Derby 46067-8 Edgware 4658-9 Felegrams-SplralDerby 46067;Splratucom Phone London Novem ber 2, 1945 E l e c t r i c a l R e v i e w (Supplement) 95

LL S IZ E S

HAMPTON WORKS ( STAM PI N G S ) / O l WORK V j } /

TWYNING ROAD, STIRCHLEY, BIRMINGHAM* Tel.: King’s Norton 2281 (2 lines). Grams: Radiagills, B ’ham fc

M STRIPS IN HALF THE TIME! and FOR WELLS & # solves a sticky problem by the intro­ duction of a cellophane tape between BOREHOLES OF the conductor and the insulant. # Electrical and mechanical EVERY DEPTH characteristics unchanged. # Applicable to single conductors or to T Y P E E.O .E. for Well* and Borehole* multicore sheathed cables. exceeding 25 ft. In depth. Totally enclosed self-oiling mechanism of Patented design. Precision workmanship throughout. Pump can be supplied complete with ) 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 illustrated literature, prices and • discounts. H. J. GODWIN LT QUENINGTON, GLOS. RELIANCE ELECTRICAL WIRE CO. LTD. Telephone.' Coin St. M w y n 3S (3 linee) Te/ejremj: fompe. Qutnlniton. Established 1854 HNGAL WORKS, STAFFA ROAD, LONDON, E.10 96 (Supplement) E l e c t r i c a l R e v i e w Novem ber 2, 1945

The letter Eta

(the Greek long e) is known by engineers as the s y m b o l for Efficiency .

The Philips emblem is another 1 s y m b o l f o r e f f i c i e n c y • The world-wide

reputation of Philips electrical products is based on the utmost efficiency in design, construction and performance. PHILIPS LAMPS • RADIO - X-RAY ■ COMMUNICATIONS EQUIPMENT AND ALLIED ELECTRICAL PRODUCTS

PHILIPS LAMPS LTD ■ CENTURY HOUSE • SHAFTES3URY AVENUE . LONDON • W.C .2 ( 126 D) November 2, 1945 Electrical Review (Supplement) 9 7

APPROVED BY A .I.D . to D .T .D . 599 G.P.O. and all other G overnm ent Departments. • Contains 3 cores of extra active non- corrosive flux. No extra Flux required. • Speedily makes : ^ C ^ s ^ Pn6eddÜiyo- i n , ; ° oxidised surfaces.surface n

THE ONLY SOLDER WIRE WITH 3 CORES OF FLUX. Firms are invited to write for comprehensive technical information, including useful tables of melting points, etc. Sent free with testing samples. Single reel rate nominal 1 lb. reels. 13 SWG ..... 4/10 16 SWG 5/3 Above prices subject to usual trade discount. MULTICORE SOLDERS LIMITED Commonwealth House, New Oxford Street London, W.C.l Tel . CHAncery 5171-2

SPRING OPERATED

CABLE

DRUMS

All sizes and types of self-winding drums supplied for electrical cable or pressure hose.

Our experience is at your disposal.

Quotations promptly upon receipt Small Rivet* of particulars of your requirements. a speciality IN ALL SIZES FOR ALL PURPOSES 86 - 88 CONSTITUTION HILL The NEWEY ENGINEERING CO. LTD. BIRMINGHAM 19 BROOK ST., NOTTINGHAM Phone: COLMORE 4010 London Agent: E. J. Cookson, 10 Devonshire Chambers, Telejramj : " Newbeck, N ottm ." Phone : 41045/6 Nottm. 146 Bishopsgate, E.C.2 98 (Supplement) E l e c t r ic a l R e v ie w Novem ber 2, 1945

Small Turned Parts and Inserts made to order. Enquiries invited. GH FIBRE CONDUIT ß # ...... KEY Large Stocks now avail­ i Sewice able at Manchester VACUUMS LIMITED KEY ENGINEERING CO. LTD. A LDRIDGE ROAD 4 QUEEN VICTORIA STREET, LONDON BIRMINGHAM 22b AND MANCHESTER. BIRCHFIELDS 4 7 9 3

SNAP-ACTION LIMIT SWITCH LON D EX for RELAYS TYPE A KFR For A.C. and D.C. including Time Delay Relays, High Sensitive Relays, Synchronous OTHER PRODUCTS : P r o c e s s Timers and complete Control Plants. AUTOMATIC STARTERS ROTARY SWITCHES Atk for Leaflet SPN/ER CONTACTORS Midget Relay ML (for D.C. only) OVERLOADS British Klockner Switchgear Ltd. L 0 N D E X • L T D MANUFACTURERS OF RELAYS Chertsey, Surrey. Phone : chertsey 2221/2 8g!M&v 207 ANERIEY ROAD- LOND0NSE2O .v o iK & W

FOR CLASSIFIED ADVERTISEMENTS SEE PAGE 57 INDEX TO ADVERTISERS— SEE PAGES 70 AND .72 N ovem ber 2, 1945 E l e c t r ic a l R e v ie w iii

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

In these days of tremendous effort where high quality in materials is of paramount importance “Sistoflex” remains unsurpassed

SPICERS LIMITED

19 NEW BRIDGE ST., LONDON, E.C.4. Telephone: CENTRAL 4211

SECOMAK I * R e g d . T ra d e M ark HIGH-SPEED m MORE POWERFUL # MORE RELIABLE PORTABLE # EASIER TO USE T h is b lo w e r w ith a 212- BLOWER mile-an-hour blast of dry air dislodges all foreign matter from windings of electric motors and other inaccess­ ible places. Send for leaflet S 7/100.

cleaning, D irt causes unnecessary iriccion inmdcninery.wdsica Telephone: Wembley 0194/5 costly power, and is the direct cause of rapid depreciation. SERVICE ELECTRIC CO. LTD., Abbey Estate, Mount Pleasant, Alperton, Middx. IV November 2, 1945

You can’t open a Philips Lamp and see how it’s made, but you can easily test it in use. There is no better

transformer of electricity into light. You will find that Philips Lamps

give a maximum of clear, bright light for a minimum of current.

S e /i PHILIPS —the Lamps the Public like Makers of Good Lamps for over jo Years

PHILIPS LAMPS LIMITED. CENTURY HOUSE, SHAFTESBURY AVENUE, LONDON, W.C.2. (16 2 )

Printed in Great Britain at T h e C h a p e l R i v e r P r e s s , Andover, Hants, and published by E l e c t r ic a l R e v i e w , L im it b d , at Dorset House, Stamford Street, London, S.E.l.