Aavt. of The General Electric Co. Ltd., Magnet House, Kingsway, London, W .C.2 ii E l e c t r ic a l R e v ie w October 19, 1945
BOOK THE 9th NOVEMBER FOR THE E.I.B.A. VICTORY BALL October 19, 1945 E l e c t r ic a l R e v ie w 1
A eaétfae ta k es tk e
We have realised for a con siderable time the need for eliminating the bugbear of re-tinning furred-up Water H eaters. The use of Monel is the answer, for this metal needs no tinning. That ’s why we are concentrating on ALL- MONEL construction, as in creasing supplies of this metal become available.
leaders in elechic waler heaters
HEATRAE LTD., NORWICH - PHONE : NORWICH 25131 - GRAMS : HEATRAE, NORWICH
“ WESTMINSTER” THE “FACILE” TERMINAL Brush f f Send for Prices and List of all Holders kinds of Terminals 100,000 ffi© ROSS COURTNEY su pplied ASHBROOK ROAD, LONDON, N. 1»
MADE TO SUIT ANY MACHINE '—*
Dynamos and Motors Rewound and Re-constructed. “ Partridge ” Pressure GLANDS to the apeo* Detectors, “ Partridge ” Earthing Devices, mo require- monte of our Switchgear, Photographic Arc Lamps, o u s t o m e r e Electric Welders, Medical Arc Lamps M ahers of ell types of re* petition pro* d u c t s f r o m the bar In all Th. WESTMINSTER ENfi.Co.Ltd. m e t a l s Victoria Road, Wl I let den Junction, N.W.IO M.C.L and REPETITION LTD. Telephone: Telegrams: Pool Lane , Lanqley , Birmingham. Elgar 7372 (2 lines) “ Regency, Phone, London." October 19, 1945 2 E l e c t r ic a l R e v ie w Exact performance data —
for Crompton Switchgear.
{ BOOK THE 9th NOV.^l FOR THE E .L B .A .&
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 per formance and dependable operation of Crompton Switchgear is thus assured.
ERomPTonw PRRKinson limited
ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W.C.2 and Bronchi 3 October 19, 1945 E l e c t r ic a l R e v ie w
The old man isa craftsman...
"He's a what?" asked the Young Apprentice.
“A Craftsman ” repeated the Oldest Em ployee. “ O h!” said theY.A. “ I thought you said something else. ’ ’ “ It comes to the same thing. Nothink I do or you do or anyone does is good enough for his lordship. See ?” “ / can't say as I do” said the Young Apprentice. “ You w ill! ’ ’ muttered theOldestEmployee darkly. “ I bin watching you, me young cockalorum, and if you take my tip you’ll go and get another job—where being ’am- ’anded and ’alf-witted is an advantage. Go and be an ’eavyweight boxer. Get a job in one of these ’ere Ministries. You won’t never do no good here.” “ W hy not ? ” asked the Young Apprentice. “ Because the Old M an’s a Craftsman ” said the Oldest Employee. “ He ain’t never satisfied with nothing and nobody. Not even me. I believe he ’ates ’isself 1 ’e ’ll certainly ’ate the very sight of you. ’E ’s a c ra ftsm a n .” ‘ * He certainly sounds like it! '' said the Young Apprentice.
D ESO U TTER Specialists in Lightweight, Pneumatic & Electric Portable Tools DESOUTTER BROS. LTD., (Dep\ R ), The Hyde, Hendon, London, N.W .9. Telephone: Colindale 6346-7-8-?
C.R.C. 155 4 E l e c t r ic a l R e v ie w October 19, 1945
S.P. Porcelain Covers are incorporated in many Transformer Switchgear and Cable Terminals. We make insulators for all purposes and it may be worth your while to consult us before you finalize your design.
STEATITE & PORCELAIN PRODUCTS LTD. Head Office: Stourport-on-Severn, Worcs. Phone: Stourport 111. Gram s: Steatain, Stourport October 19, 1945 E l e c t r ic a l R e v ie w w English Electric ÉÉ # # f i f e Prime Movers FROM
' ^ | Comprehensive Range for all Conditions. A 60,000 kW, at 3,000 r.p.m , Steam Turbine, 1,250 lbs. pressure, 950° F. temperature, is in course of construction. THE ENGLISH ELECTRIC COMPANY LIMITED
i t e r
m ’l+ x t m w n s m x n z n m STAFFORD-PRESTON-RUGBY-BRADFORD QUEEN'S HOUSE ■ KINGSWAY-W.C.2 Book November 9th for the E.I.B.A. Victory Ball F l e c t r ic a l R e v ie w October 19, 1945
f« '
The reliability of the generating plant is the same as that of its dis tributive cable. And the reliability of th e cable is that of its insulation! T h at Is w hy leading cable manufacturers use Tullls Russell Rothmill Cable Insulating Papers. Rothmill is renowned for its uniformly highquality.and isguaranteed free from metals and grit. R othiiiill A complete range is manu factured. W rite for details, CABLE INSULATING PAPER
T ulU t Q tu ell tC o.H id. The Pioneers of Twin-wire Papers for Printers AUCHMUTY 8. ROTHES PAPER MILLS, MARKINCH, SCOTLAND LONDON MANCHESTER BIRMINGHAM I Tudor Street, E.C.4 372 Corn Exchange Bldgs., I Id Colmore Row Corporation Street 4 ul eal o St tva Elcrsai Prcpttr ae n ps fe bolt 1494 U booklet free post r u o in are recipitators P lectrostatic E t an rtev tu S of details Full S ctober O t n a v e t r u t W0RCESTER OD SURREY. Y E R R U .S N O T T U S ROAD, R E T S E C R 0 .W 5 2 9 1945 19,
E neeri g in r e e in g n e l a c i r t c e l R w e i v e C o .L d t . 8 E l e c t r ic a l R e v ie w October 19, 1945
BRANCHES: London, Birmingham, Cardiff, Bath, Manchester. Leeds, Newcastle, Glasgow, Belfast, Dublin October 19, 1945 E l e c t r ic a l R e v ie w 9
When resistance to high temperature is an\important factor in the choice of a winding wiret, thé job calls for BI-GLASS, a / T 1 winding yrire rated fpr continuous operation at I40°C
It has high resistance to moisture and abrasion.
Other advantages are high dielectric strength, free dom from ageing, and high space factor • • • • I-GLASS WINDING WIRES and STRIPS i A.-Éife-.1!1, ______j—!____:_____- BRITISH INSULATED CALLENDER’S CABLES LTD. Main Works : -Erith • Helsby • Leigh (Lancs.) • Prescot October 19, 1945 10 E l e c t r ic a l R e v ie w
For the many instances where The Benjamin Intensolux consists supplementary lighting is required of a chromium plated reflector on a particular position ormachine with a clear or stippled glass visor in order to increase the work front making the whole unit dust- ing illumination, it is often con tight. It is grey enamelled outside venient to provide it from a with a universally adjustable little distance. The Benjamin Inten- knuckle joint suspension tapped solux provides a beam of light conduit female. Holders are which is most convenient for included BC or ES according this purpose. It can be mounted to the size, and there are units overhead or on a wall and set to suitable for various size lamps. direct the light in the precise A focussing device is incorporated manner required and is thus kept allowing the degree of concen out of the way of the operative. tration to be controlled. Benjamin Illuminating Engineering Service will advise you on your lighting problems. BIN7AMJN
The Benjamin Electric Ltd., Brantwood Works, Tottenham, London, N.I7 Telegrams: “ Benjalect, Southtot, London.” Telephone: Tottenham 5252 (5 lines) O ctober 19, 1945 Electrical Review 11
FERRANTI LTD., Hollinwood, Lancs. London Office i Kern House* K ingsw ay, W .C.2* 12 E l e c t r ic a l R e v ie w O ctober 19, 1945
Paxolin is the re- W gistered trade name for our laminated products of 1 the phenolic class which are made in a wide variety of grades in Sheets, Rods, Tubes and Cylinders. Complete details, including technical data, information regarding the grade most suitable for any particular purpose and instruc- k tions for machining are i obtainable from the JL m anufacturers. j $ j j k
THE MICANITE & INSULATORS COMPANY LTD., Empire Works, Blackhorse Lane, Walthamstow, London, E.I7 Makers of MICANITE (Built-up Mica Insulation). Fabricated and Processed M ICA, PAXOLIN (Svnthetic-resin laminated sheets, rods, tubes and cylinders). m i High-voltage Bushings and Terminals for indoor and outdoor use. Empire Varnished Insulating Cloths and Tapes and all other forms o f Electrical Insu lation. Suppliers o f Vulcanised Fibre, Leatheroid, Presspahn, etc. Distributors of Micoflex-Duratuh Micoflex-Durasleeve (plastic covered flexible metal conduit) and Kenutuf Injection Mouldings* ( p vin8s< October 19, 1945 Electrical Review 13
On the road of Progress stands SOUTHAMPTON
Richard I departing for the Crusades, according to the painting by Glyn Philpot
E n g l i s h history and progress have marched together, and on their route, distinguished by dramatic interest, stands Southampton. From its West Quay sailed the Crusaders, the army that fought at Crecy and the Pilgrim Fathers. Through its West Gate Henry V led the yeomen who won at Agincourt. But the greatest story of Southampton is of the devotion, energy and enterprise that converted a meagre Saxon settlement into one of the world’s greatest ports with docks that accommodate the largest ships. Southampton’s ocean-going traffic is enormous, making heavy demands upon land transport and communications. Southampton’s telephone service is naturally one of the busiest. It depends upon Alton batteries for its current. ALTON BATTERIES OF MERIT THE ALTON BATTERY COMPANY LTD ., ALTON, HANTS Sole Suppliers of Fuller Stationary Batteries Telephone : Alton 2267 and 2268 Telegrams : ‘ Battery, Alton ’
i A12/45 Electrical Review O ctober 19, 1945
The plug and socket. Two of the many electrical components which depend on good insulation.
UNIFORM INSULATION- THICK or THIN
specially developed to do this parti I F you are making a component, such as a plug and socket, for cular work. With outputs ranging instance, you can do so a great deal from 250 w atts to 5 kilowatts, more easily when you know that Redifon radio heaters can deal your plastic insulating material is with between 2 oz. to 3 lbs. of uniformly effective, whether the sec plastic material per minute. Saving tion is thick or thin. in production time is usually over The only way you can be certain 50%. of this, is when you know that the Redifon radio heating sets have plastic preform has been thoroughly all the necessary safety devices for heated all the way through, and has use by unskilled operators. They are cured simultaneously throughout. fully enclosed and simple to operate. The pre-heating of plastic preforms Manufacturers who wish for further can only be achieved with such particulars of the use of radio certainty by using radio heating. heating should get in touch with Redifon radio heaters have been Rediffusion engineers now. Rediffusion Ltd. DESIGNERS AND MANUFACTURERS OF RADIO COMMUNICATION AND INDUSTRIAL ELECTRONIC EQUIPMENT
SUBSIDIARY OF BROADCAST RELAY SERVICE, LIMITED CARLTON HOUSE, REGENT STREET, S.W.I October 19, 1945 E l e c t r ic a l R e v ie w 15
Cover removed for inspection
etsfe
Ihejf \ nM: jtfiit of ® llictl « BOOK Multi-way NOVEMBER 9th Cover for th« Multi-pole E.I.B.A. Victory Bail up to 25 amps replaced Write for descriptive leaflet 93AI. FERGUSON, PAILIN LIMITED M A N C H E S T E R , 11 ENGLAND •ph one DROYISDEN 1301 (8 lines) \ * g \ 7 LONDON Temple Bar 87ll/2 BIRMINGHAM* Sutton Coldfield 2744 ^ GLASGOW: Central 5060 October 19, 1945 16 E l e c t r i c a l R e v i e w
e n g i n e e r s EST? 186!,
» m i l
Highly efficient cooling surfaces. Dead-air spaces for trapping any leakage from cube joints Large inspection doors hinged to headers. Tube bores accessible with out breaking pipe joints. Speoal layouts of air dampers for emergency operation Automatic alarm devices for signalling excessive temperatures. aw
H E E N A N & FROUDE LIMITED ENGINEERS WORCESTER ENGLAND October 19, 1945 E l e c t r ic a l R e v ie w 17
As Plastic Moulders with unrivalled experience in the Electrical
and Wireless Trades, we look forward to the opportunity of
employing the extensive knowledge gained from working to
exacting war-time specifications in assisting you to solve your
post-war Plastic problems.
INSULATORS LTD
L E O P O L D ROAD ■ E D M O N T O N . L O N D O N - N I B . PHONE: TOT 1491 A lines) O ctober 19, 1945 18 E l e c t r ic a l R e v ie w CONVERSION OF sin g le-phase TO THREE-PHASE
NO MOVING PARTS -nothing to go wrong or wear out. HICH EFFICIENCY - about 9 5 % at full load. COOD POWER FACTOR -the converter slightly improves the power factor of the demand on the mains. COOD VOLTAGE BALANCE with load variations from zero to full load. SIMPLE TO OPERATE - n o complicated control gear. EASILY ADDED TO as the plant extends. MOST ECONOMICAL and cheap to install. NO ATTENTION - NO RENEWALS
Installation of phase converters and controlling switchboard operating a total of 130 H.P. WE STING HO US F STATIC PHASE CONVERTERS Write for descriptive pamphlet No. IIM WESTINCHOUSE BRAKE & SIGNAL CO. LTD., Pew Hill House, Chippenha Wi| J October 19, 1945 E l e c t r ic a l R e v ie w 19 Extra starting torque ?
• • Here is
your motor.
BOOK THE 9th NOV." FOR THE E.I.B.A. t VICTORY BALL. , Where you have a drive demanding extra the same if you required other special char* starting effort, you may think it difficult acteristics. Parkinson Flow Production has to obtain a suitable motor. That is until made it possible to offer a standard range of you look into the Parkinson standard over 2,000 types which includes many that range of A.C. motors. There you will find the you usually expect to have specially made. Parkinson “ Tork”— a motor with just that The Parkinson A.C. Motor Service can extra starting torque required. It would be save you a great deal of time and money. 2 0 E lectrical Review O ctober 19, 1945
PROGRESSIVE LEADERSHIP
As the original of its type the Stirling bent tube boiler has bad more imitations than any other basic design of boiler. That It is still the leading boiler of its kind is due to our continual striving for perfection in design, workmanship and service.
THE S T I R L I N G BOILER CO.. LTD. 31-33 FA R R IN G D O N ST.. LONDON, EC* October 19, 1945 Electrical Review 21 ELECTRIC-CONSTRUCTION
ïxcdlituftH ZmtmctwmlZkmteriâiù)
Y M O T O R S X GENERATORS TRANSFORMERS iMLECIRIC CONSTRlIÇflON SWITCHtCONTROL GEAR MERCURY-ARC W OLVERHAM PTON L à / M , & METAL-PLATE TELEPHONE 214-55 ( 7 LINES) October 19, 1945 E l FCTFJCAL R e v ie w
VENT-AXIA for better Air Conditions
T HE forms of control for Street Lighting are many and varied, but now CENTRALISED CONTROL is generally accepted as essential. Sordoviso Street Lighting Control units embodying the Sordoviso non tilting Mercury Switch with its inherent features of non-burning contacts, low energising current, silence in operation and freedom from climatic effects, provide a most efficient remote or automatic control with low installation and main tenance costs. ^ If you are contemplating a new scheme or modifications to an exist ing one, the advice of our Technical Staff is always available. We shall be pleased to forward, on application, our brochure, “ Con trolled Street Lighting.” SORDOVISO SWITCHGEAR LTD. Falcon Works, Loughborough LOUGHBOROUGH 3131 October 19, 1945 E l e c t r ic a l R ev ie w 23
-♦Vif t ♦♦♦♦Vi I
1♦ ♦♦ PREMIER '♦V » f t m iv! u f t m m u * Electric Kettles f t Fires and Irons i Toasters, Coffee m
>♦♦ V fi ♦♦ ♦♦ 4 1 PREMIER ELECTRIC HEATERS LIMITED Specialists in Fine-Quality Electric u Heating Appliances for nearly 40 years I BIRMINGHAM, 9 m m RP-630A E l e c t r ic a l R e v ie w October 19, 1945 FOR A LL PURPOSES “ Cressall ” Sliding Resistances are manufactured in an immense variety of types and sizes to meet every known requirement. Every “ Cressall” Re sistance is of sound design and incorporates the best possible '‘CRESSALL'' w o rk m a n s h i p— ye t Back-of-Board Sliding PRICES ARE COMPETITIVE Resistance with bevel wheel drive for fine regulation — w i t h H a n d w h e e l a n d Dialplate for m ounting 31 & 32 T O W E R S T R E E T BIRMINGHAM Phone: Aston Cross 3463/4 Grams: Ohmic, Birmingham Please send us your enquiries—and ask for descriptive literature kri AUXILIARY STEAM ELECTRODE BOILERS" ;c ideal tor u se , elect1 u se rs An stea«1 large m o te T\iatV I t is a’nV other otcompaf «act q{ thao steam Supply» s ^ be source _ftueaud^ the B. A. and B. S. F. N U T S , B O LT S and S C R E W S S T U D D IN G and A L L 1 • W " f . '° THREAD STUDS LARGE STOCKS — PROMPT DELIVERIES Iaud s at® j S vertief S sou ä TELCO LTD. tic , w n » 41 GORDON SQ., LONDOn"* v J.CA . Telephone : Euston 1467/8 ^ --- 6Î Roberts»" Sl- - ® 9 3 - l5 October 19, 1945 E l e c t r ic a l R e v ie w 25 fulTH E NEW WORLD The Hackbridge Electric Construction Company brings to the peace-time tasks of reconstruction and develop ment a quarter-century of specialised experience and a tradition of good design and workmanship in the manufacture, for world-wide service, of transformers of every type, size and voltage. Much of the power for the new world will flow through HRCKBMDDE T R A NSFORMIRS h a c k b r i d g e ELECTRIC CONSTRUCTION CO. LTD. WALTON-ON-THAMES, SURREY, ENGLAND Telephone : Walton-on-Thames 760 (8 lines). Telegrams : " Electric," Walton-on-Thames 2 6 E l e c t r ic a l R e v ie w O ctober 19, 1945 LANCASHIRE DYNAMO FOSTER TRANSFORMERS C RY PTO N EQUIP The “ L.D.C.” Group of Factories manufacture a wide throughout all branches of industry A.C. AND D.C. MOTORS AND GENERATORS SPLIT-PHASE CAPACITOR & REPULSION MOTORS GAS WORKS AND WEATHERPROOF MOTORS ROTARY TRANSFORMERS AND CONVERTERS FLAMEPROOF (BUXTON TESTED) MOTORS SINGLE-PHASE FRACTIONAL H.P. MOTORS SELF-STARTING SYNCHRONOUS MOTORS FLAMEPROOF A.C. AND D.C. MOTORS FANKULD AND CORCOOLED MOTORS 3-PHASE FRACTIONAL H.P. MOTORS HIGH TORQUE MOTORS D.C. FRACTIONAL H.P. MOTORS STEEL WORKS MOTORS PROPELLOR FAN MOTORS TURBO ALTERNATORS INDUSTRIAL MOTORS CRANE MOTORS TESTING EQUIPMENT FREQUENCY CHANGERS GEARED MOTOR UNITS MOTOR-GENERATOR SETS MOTOR-GENERATOR SETS ELECTRIC PLANER DRIVES FOOD PREPARING MACHINERY REVERSIBLE BOOSTER SETS MEAT CHOPPERS AND MINCERS WARD-LEONARD EQUIPMENTS CAKE MIXERS AND COFFEE MILLS HIGH & LOW TENSION ALTERNATORS VEGETABLE PEELERS AND CHIPPERS SINGLE, DOUBLE & TRIPLE REDUCTION ROTAPAN COOKERS AND CONSERVATORS A.C. AND D.C. GEARED ELECTRIC MOTOR UNITS B O W L CUTTERS A N D C O M B IN A T IO N MACHINES etc. MANUFACTURED manufactured October 19, 1945 E l e c t r ic a l R e v ie w 27 AND CRYPTO LIMITED ^ AND SWITCHGEAR LTD. UlMENT LIMITED Jri*' range of Electrical Products that are well known for their Efficiency and Reliability. IKMOlii TRANSFORMERS FOR A.C. AND D.C. TEST SETS ALL TYPES OF BATTERY CHARGING RECTIFIERS »CO«« LOW VOLT. SAFETY LIGHTING TRANSFORMERS RECTIFIERS FOR LIFTS, HOISTS AND CRANES UKf.Iffi CURRENT AND POTENTIAL TRANSFORMERS BATTERY CHARGING METAL RECTIFIERS D.C HOI® POWER AND SUB-STATION TRANSFORMERS TRICKLE CHARGING RECTIFIERS H.P.HOR VOLTAGE REGULATION TRANSFORMERS BATTERY TESTING EQUIPMENT .PHOTO FACTORY LIGHTING TRANSFORMERS ARMATURE DROP TESTERS MOTORS L.T. AND H.T. CUBICLES AUTOMATIC CUT-OUTS OTORS MARINE SWITCHBOARDS TELEPHONE RECTIFIERS WENT RECTIFIER TRANSFORMERS BALL RACE EXTRACTORS )HUNITS ALTERNATOR AND FEEDER BOARDS CINEMA PROJECTION RECTIFIERS . UORSETS BATTERY CHARGING SWITCHBOARDS AUTOMOBILE SERVICE EQUIPMENT MACHINE!! FABRICATED STEEL SUB-STATIONS WITH SLIDING RESISTANCES AND DIMMERS JOHN® TRANSFORMERS AND FULL EQUIPMENT ROTARY BATTERY CHARGING PLANT CORE HU! KNIFE SWITCHES, FUSES AND ISOLATORS MULTI-CIRCUIT M.G. BATTERY CHARGERS iW0CW® FLAT-BACK LOW TENSION A.C. SWITCHBOARDS ACCUMULATOR CHARGING SWITCHBOARDS SOC0NSE«W'sHEAVY i n d u s t r i a l ir o n c l a d f u s e s w i t c h e s CONSTANT POTENTIAL BATTERY CHARGERS 1TS,.(N D u n i t t y p e i r o n c l a d switchboards PORTABLE AUTOMOBILE TESTING EQUIPMENT etc. MANUFACTURED MANUFACTURED , a t t h e at the A “FOSTER” WORKS “CRYPTON” WORKS , iQ W IM BLED O N ■ LONDON S.W.I9 SOMERSET 2 8 E l e c t r ic a l R e v ie w October 19. 1945 STANCE W e , too, are experts, though in a different field of Resistance — and you can’t beat Cromaloy wires. They are the result of years of study and catering for this highly specialised field exclusively. A ELECTRICAL RESISTANCE WIRES A. C. SCOTT & Co. Ltd., CROMALOY HOUSE, CITY RD„ MANCHESTER. dm 1375 Current Price List cancelled New List available J NIPHAN WEATHERPROOF METAL - CLAD Cast Brass Terminal Socket Plug with Guard Ring to PLUGS & SOCKETS and Cover protect Pins 5 to 300 Amp. 250 / 500 Volt.. 3 and 4 Pole Earthed Type and 2 Pole. For Electric Lighting and Power, Transmission, Communication, Portable Tools, etc. C.I. Terminal Socket & Cover ^ nr©ugh Socket and Cover Manufactured by SIMMONDS & STOKES LTD. VICTORIA HOUSE. SOUTHAMPTON ROW. LONDON. W.C.I HOLBORN »17 October 19, 1945 E l e c t r ic a l R e v ie w 29 V t S K R / N G S CLOSE-UPS NO.3 SERVICING Ask the service man which “VISKRINGS” advantage he most appreciates and he’d have a job to choose. The swift identification by colour and wording. The knowledge that being impervious to oils and petroleum they will come out in just the same condition as they went in. The fact that having originally been fitted by shrinkage the diameter of the cable is not increased. These advantages and many more, have contributed to the enormous popularity of “VISKRINGS” Cable markers. • N O TOOLS REQUIRED •INDELIBLY PRINTED • N O RUBBER USED • SELF FIXING BY SHRINKAGE • IMPERISHABLE, IMPERVIOUS TO • DO NOT INCREASE DIAMETER OILS AND PETROLEUM OF C A B L E CABLE MARKERS VISCOSE DEVELOPMENT CO. LTD. Woldham Road, Bromley, Kent. ’Phone : Ravensbourne 2641 O ctober 19, 1945 30 E l e c t r ic a l R e v ie w YORK MINSTER The most impressive of England’s ecclesiastical buildings in the Decorated style is famous for its wealth of stained glass windows MADE IN ENGLAND FIFTY YEARS OF BOOK Q U A L IT Y & S E R V I C E 9th NOV (MtaneJter) E.I.B.A B U R Y S T EDMUNDS LEEDS LONDON BIRMINGHAM VICTORY C A R D I F F LEICESTER MANCHESTER BRIGHTON BALL GLASGOW LIVERPOOL BRISTOL NEWCASTLE CRYSELCO LIMITED, KEMPSTON WORKS, BEDFOR October 19, 1945 E l e c t r ic a l R e v ie w 31 Over 30,000}). & P. ‘ D ’ Fuse- $witches are already in service : proof of the reliability of this over head line device. In addition, transient faults are cleared by use of the J. & P. Repeater Switch which restores a service automatically. ‘ D ’ Fuse Switches are supplied in the following sizes : o- 66, 3 - 3, 1 1 , 22 and 33 kV. May we send to you copies of Publications S.G . 51, “ The Type ‘ D ’ Fuse Switch ” and S.G. 49, “ Type ‘ D ’ Fuse-Switch with Repeater Switch ” ? JOHNSON & PHILLIPS LTD.. CHARLTON, LONDON, S.E.7 Telephone : Greenwich 3244 (13 lines). Telegrams : "JunoCharlto rU m c A iLcJt iL i "lUtU m m in yucJkUy ------3 : E l e c t r ic a l R e v ie w October 19, 1945 MOULDED CABLE BREAKS fqiickly TRACED HANDWHEELS STANDARD SIZES IN BAKELITE If— J r Save Metal and Machining Time Improve Appearance. Cost Less LEAFLET FROM Far TRAILING FLEXIBLES THE ał PORTABLE TOOLS, efe. RAY ENGINEERING AjAc for poaphlec A 74 C O . LTD . n e * ' . BRITISH CENTRAL ELECTRICAL CO. LTD. South mead Bristol 6~~ Ra a arv A r t, L in d s t E.C.I ! Tekpkcae : TEA. 2S25 THE ELECTRIC DEPOT LTD.. PRITCHETT STREET. BIRMINGHAM. 6. DIALS f t H W AH l HB ■E n” ! ^Si3F™B T ANN GEAR CO. LTD ^TH - Soners: October 19, 1945 Electrical Review 33 Over Years oft / Heaviest Duty v low maintenance costs supply ample proof of the engineering reliability o f “ ERSKINE HEAP” SWITCHGEAR THE SYMBOL OF installed . . . RELIABILITY in th e many electrical undertakings, collieries, steel works and mills throughout the British Empire One of our engineers will gladly discuss with you and help to solve you r Switchgear Problems. ERSKINE, HLAIM L Head Office and W orks : London Office: G R A N D BUILDING S. BROUGHTON. MANCHESTER 7. Switchgear TRAFALGAR SQUARE, W.C2. Phone : DEAtsaaie *S6I (4 lina). Phone : ABBer 2748-9. Cram: " electron," Manchester. Specialists Grams : " ErskJr,e2p, Phone, London,'' BRANCH OFFICES AND AGENCIES IN ALL PARTS OF THE WORLD cn-wi October 19, 1945 34 E l e c t r ic a l R e v ie w CLIX F i n i s h e d CENACCO HEAVY OR LIGHT - : ... frames and cases are all just sheet metal fabricated to the customer’s requirements From customers' specifications A ir 1 /" “ „p to order: feeder pillars, t e l e p h o n e boxes and cubicles, busbar chambers, co" n* l of cvcry instrument panels, and frarn" „ 5heet metals, description. They work in a othcr Including steel, duralumin, aluminium non-ferrous metals. w LIMITED 1 Telephone : Ealing 66SS. Telegraphic Address : " Airdux. Brentford ' Great West Road, Brentford. October 19, 1945 E l e c t r ic a l R e v ie w 35 'm a XLUM e ’ OVERLAMP REFLECTOR LIFT, TURN A N D L O W E R O V ER T H E LAMP D ortt le t d ir t s p o il y o u r Lighting Schemes INSIST ON haXLUMe OVERLAMP REFLECTORS THEY ARE EASY TO CLEAN ! ! CONSULT- London Office : BRETTENHAM HOUSE VERITYS LTD. LANCASTER PLACE ASTON - B’HAM 6 W .C .2 Depots at BIRMINGHAM - MANCHESTER - BRISTOL - GLASGOW NEWCASTLE-ON-TYNE 36 E l e c t r ic a l R e v ie w O ctober 19, 1945 Better ways of using •I Practical guides to economy i f y o u u s e Liquid fuel you will welcome suggestions that will make it possible to get more work out of every gallon consumed. Whether you use petroleum fuel, gas or diesel oils, creosote or creosote/pitch mixture, you have at your disposal expert advice on how to reduce losses and wastage and improve the operational efficiency of your plant. The advice is given in these three Bulletins : THE INDUSTRIAL USE OF LIQUID FUEL HEAVY-OIL ENGINES (Bulletin No. 24) {Bulletin No. 23) A valuable reference to the The facts you need to know correct fluidity of various fuel about efficient engine opera oils at the point of usage ; to tion, easily and quickly the care of burners and the grasped. The Bulletin includes effective control of combus a useful rota for cleaning and tion ; the recovery of waste overhauls, the specimen daily heat from furnace flue gases ; and weekly log sheets (essen better furnace loading. tial to economical operation). CREOSOTE/PITCH Besides technical data (in easy-to-follow MIXTURE form) there are well-illustrated descriptions {Bulletin No. 36) of efficient C/P systems and practical points on proper combustion. Operational diffi culties are listed and the answers given. MANAGING EXECUTIVES as well as operatives will be well rewarded by a study of these Bulletins. They point the way to substantial oil economies, and improved working. The Bulletins are free from your Regional Office of the Ministry of Fuel and Power. ISSUED BY THE MINISTRY OF FUEL AND POWER October 19, 1945 E l e c t r ic a l R e v ie w 37 Metrovick Cosmos Lamps stand out above all common lamps , quality I 'Patricicui o f lumps tells in the long run. METROVICK S/A5I2 COSMOS LAMPS METROPOtlTAN-VICKERS ELECTRICAL COMPANY LIMITED NUMBER ONE KINGSWAY LONDON, W. C. 2 38 Electrical Review O ctober 19, 1945 Study this E lliso n ROTOR STARTER... Notice its many attractive features, its great strength, the ease with which cables can be connected, boxes filled with compound, tank filled with oil and the simplicity of its inspection. It needs little atten tion but routine maintenance should not be neglected. In return this flame-proof oilcooled starter will give many years of trouble-free service. 508 E lec t r ic a l R e v ie w Managing Editor : October 19, 1945 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor: Contents :— C. O. Brettelle, M.I.E.E. J. H. Cosens Page Page Editorial.—Consumers’ Rights . 541 Registration of Contractors. By The E.A.W . Comes of Age . 543 A. H. Dykes, M.Inst.C.E., M. I.E.E. 564 Parliamentary News . 548 Electricity Supply 565 Electric Motor Maintenance. By Power and Prosperity . 567 D. T. Evans, A.M.I.E.E. . 549 Financial Section London Transport Board . 551 568 Personal and Social . 552 Turbine Oil Purification 571 Correspondence • . . 555 New Patents 574 Rural Supplies . 555 Forthcoming Events 574 Purchasers’ Specifications . 556 Contract Information 575 G.P.O. Developments . . 557 Municipal Reports - 576 Views on the News . 558 Improving Power Supply . 559 Lighting Practice . 560 Classified Advertisements 45 Commerce and Industry . 561 Index to Advertisers 56 EDITORIAL, ADVERTISING & PU BLISH IN G OFFICES : Dorset House, Stamford St., London, S.E.I Telegraphic Address : “ Ageekay, Sedist. London.” C o d e: 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 R EV IEW LTD., and crossed “ Lloyds Bank.” SOUND SIGNALS STAFF LOCATORS LUMINOUS CALL SYSTEMS FIRE, BURGLAR AND MINING SIGNALS BANK RA ID AL AR MS TELEPHONES ■ RELAYS STRIKING, CHIMING AND WATCHMAN’S C LO C KS TOLLING MECHANISM ELECTRIC IMPULSE CLOCKS LIQUID-LEVEL INDICATING, SYNCHRONOUS CLOCKS RECORDING & ALARM APP. PROCESS TIMERS IDLE- M ACHINE A N D O U T TRANSFOR MERS P U T RECORDERS LUMINOUS CALL SYSTEM Adopted by leading Hotels, Hospitals and Flats and installed in the W o rld ’s most luxurious Ships pre-war, this silent call service will be in universal demand in Building reconstruction and planning. Further ' ' L- —— — * GENT & CO. LTD. Also London * Newcastle-on-Tyne Faraday Works, LEICESTER Glasgow • Belfast • Dublin 40 E l e c t r ic a l R e v ie w October 19, 1945 POWER FACTOR METERS Single and Polyphase — Switchboard and Portable Patterns:— EVERETT EDGCUMBE “ Rotary” Power Factor Meters possess the follow ing distinctive characteristics:— 0 The scale extends over the whole circumference of the dial. Q They indicate “ Leading ” and “ Lagging ” power factor in both forward and reverse directions. 0 No moving coils, ligaments or brushes are used. Q They are independent of ordinary variations of voltage, current and frequency, “INKWELL” Graphic Power- Factor Recorders give a continuous record of the changes in power factor, and having roll charts and a constant ink supply, require a minimum of attention. WRITE FOR CATALOGUE SHEETS 180 AND 308 EVERETT EDGCUMBE COLINDALE WORKS LONDON, N.W.9 Telephone: COLI N D A L E 604S Manufacturers ef all kinds of indicating and recording electrical instruments. Photometry experts E lec t r ic a l THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872 Vol. CXXXVII. No. 3543. OCTOBER 19, 1945 9d. WEEKLY Consum ers’ Rights The True Criterion of Service IKE all purveyors of commodities, the Mr. Forbes Jackson, the new chairman L electrical industry in order to thrive of the I.E.E. Installations Section is has to find out the wishes of the con favourably placed for mass-observation suming public. The obligation to do so is of its electrical requirements and of the all the greater because what it provides is manner in which they are met. Tariff really essential to national prosperity or to vagaries he has found to have little im reasonable amenities of life and because portance for consumers, but they have a the most obvious channels of communica bad appearance and have undoubtedly tion with the public—the electricity supply done the credit of the industry in men’s undertakings—are protected to some extent eyes much wrong. Unexplained differ by statute, and consumers cannot change ences in tariff forms are an irritant, but from one to another. price itself is not a common cause of complaint. More serious is the feeling What are the Needs ? that undertakings take but little interest At the same time the difficulties of gain in whether or no consumers derive full ing an insight into popular needs are also benefit from the use of electricity. This great, largely because of the technicalities points to the need for considerably involved which, obscure to consumers, are expanded activity on the part of consumers’ apt to create an attitude of aloofness in departments in instructing the public in those whose knowledge of the subject is the many ways in which electricity can not readily expressed in popular language serve them and at what price. and who are perhaps inclined to be im patient of such manifestations of public Importance of Small Things preference as led before the war to dis Public mention of the desirability of satisfaction with older types of cookers electrification is often accompanied by a . whenever some superficial change was reference to “ labour-saving.” Although made. Moreover, consumers of elec this term certainly describes such heavy- tricity are without means of expressing current consuming apparatus as cooking, their views through representative bodies, water heating and space heating, especially which so well serve the interests of those as compared with solid fuel, it is at least as ygi on the other side of the table, although applicable to numerous other appliances, fUJl the Electrical Association for Women, in which electricity has no competitor, whose twenty-first annual conference is that have not been so vigorously en reported by us this week, has to some couraged, presumably because their energy extent cleared the path. consumption is relatively small. Dough By virtue of his position with the London mixing, clothes and dish washing, floor County Council, which is a very large polishing, lawn mowing and hedge clipping upl purchaser of electricity from many under- were among those mentioned in the :ry' takings and is also responsible for housing, address. While the attention paid to the 542 E l e c t r ic a l R e v ie w October 19, 1945 former group has been justified in the credit for the energetic and enterprising provision of revenue to make a supply to manner in which the Association has more the others economic, it does not go far than fulfilled their expectations. enough. Neither the number of kWh sold nor the rate per kWh is the true criterion M r. W. D ixon’s address of efficiency, but over-all service given. Large-Scale as chairman of the I.E.E. To give full service, supply cannot wait Developments North - Eastern Centre upon demand, but must take the initiative • amounted essentially to a in stimulating demand so that the requisite comprehensive “ progress report on apparatus can be produced at prices that electricity supply with indications of the multitude is prepared to pay. Experi trends of recent major developments. ence has shown that what is most accept The author’s account of the means adopted able to consumers is most profitable to to overcome certain “ teething troubles ” the electrical industry as a whole. was made the more valuable by comparison at first hand with experiences in the Too frequently the elec- United States. More prolonged and Rural tricity supply industry closer contact with the war centre has made Electricity has been accused of the provision of adequate plant capacity indifference to the desire more urgent in Great Britain and this will of country dwellers for the benefits of no doubt influence generating practice electricity, unless they can make a com here. Nevertheless the technical features fortable profit. We have devoted a great of projects in hand seem likely to secure deal of space to proving, by describing the a correct balance (so far as this can be work of supply companies (and munici foreseen) between thermal efficiency and palities), the falsity of this generalisation ; the cost of obtaining it. On the trans most of the authorities will nowadays mission side 264-kV cables and switch- provide a supply on reasonable terms to gear appear to be feasible. any place within reasonable reach. Of course ideas will differ upon the inter As a record of steady pretation of the word “ reasonable,” but Post-Office progress in communica- resolutions which have been adopted by Achievement tions, made often under the Power Companies' Association put great stress, the chair the matter in a clearer light. At all events man's address to the I.E.E. Radio Section they show the companies’ good intentions was impressive on account both of the and have been welcomed by the National volume and diversity of the work carried Farmers’ Union. out by Post Office engineers during the war. Full use was made of the A n y early doubts that opportunities provided, for example, by E.A.W.’s there may have been as the necessity of applying voice-frequency Twenty-first to the value of the Elec- telegraphy to radio circuits, as an impro Birthday trical Association for visation in connection with D-Day, to Women both to women explore its possibilities for ordinary themselves and to the electrical industry operation. Of the very-high-frequency must surely have been dispelled by its developments described by Mr. A. H. record of achievements during the past Mumford, most important in its ultimate twenty-one years. Its work in connec influence on international communication tion with electrical education, housecraft appears to be the merging of line and training, design of appliances, housing, radio techniques in bridging gaps in cable health and the improvement of domestic systems. conditions generally cannot be over W e continue to hear of estimated, and the Association has now Call-up the ill-effects suffered by come to be regarded as one of the most Continues manufacturers by the potent instruments for the future develop calling up of their younger ment of domestic electrification. A great " key men. The District Man-Power debt of gratitude is owed to those in Boards have the very mistaken idea that dividuals and organisations which had the with the cancellation of war contracts foresight to establish and support the these men become surplus to requirements E.A.W., while to Miss Caroline Haslett, whereas the need for them during re its director, must go a great deal of the conversion is greater than ever. October 19, 1945 E l e c t r ic a l R e v ie w 543 Tlie E.A.1V. Comes of Ag*e Women’s First Electrical Exhibition WAST week the Electrical Association electrical device was installed in their M-J for Women celebrated its twenty-first homes. It was to be hoped, too. that many birthday. To mark the occasion and as women would adopt electrical careers. a tribute to the eight million women mobilised Opening the exhibition, the Duchess of for war the British Electrical Development Kent referred to the invaluable part played Association is now holding the first Women's by British women during the war and said Electrical Exhibition that their efforts had at Dorland Hall, not been excelled Regent Street. London. by those of any other S.W.l. The exhibition country. The know was opened on October ledge and skill they 11th by H.R.H. the had acquired in Duchess of Kent. electrical matters must Later in the day Sir not be wasted but Stafford C ri p p s , must be adapted to President of the meet peacetime Board of Trade, was requirements. Her the principal guest Royal Highness at a luncheon held by evinced great interest the E.A.W., which in the exhibits and she also arranged a was accompanied in reception in the her tour by Lord evening at Grosvenor Brabazon, Lord Lytton House. This was (past president of The Duchess of Kent signs the visitors’ book followed on Friday by at the E-A.W. stand E.D.A.), Lady Herbert addresses at ‘ the (lady - in - waiting), Institution of Electrical Engineers by Sir the Lord Mayor of London (Sir Frank Robert Watsoji-Watt, Sir Harry Railing Alexander), Mr. V. W. Dale (general and Mrs. Kathleen Lonsdale. manager. E.D.A.). Miss C. Haslett (director of Welcoming the Duchess of Kent at the the E.A.W.), Mr. F. Newey (chairman, opening of the exhibition. Lord Brabazon, E.D.A. Council), and Capt. J. M. Donaldson president of E.D.A.. said that great advances (chairman, E.D.A. Exhibition Committee). had been made during the past six years Many other persons prominent in the and women had shown their value in a electrical industry were present at the opening remarkable way. There were now thousands cerem ony. of women who were thoroughly electrically There was also a very comprehensive minded and we should now see that every gathering of electrical personages at the Mr. G. Tomlinson, Mrs. K. Lonsdale, Sir Stafford Cripps, Lady Swaythling and Mr. Herbert Morrison 5 4 4 E l e c t r ic a l R e v ie w October 19, 1945 birthday luncheon given by the E.A.W. at ing of the vote to women. If therefore the Connaught Rooms. Sir Stafford Cripps, through the activities of the Association President of the Board of Trade, who pro they could spread the use of convenient posed the health of the forms of power and heat Association, was accom in the home, they would be panied by Mr. Herbert doing the most practical Morrison, Lord President thing to give women of the of the Council, and Mr. country free time to interest George Tomlinson, the themselves in outside Minister of Works. Con affairs. The E.A.W.’s gratulating the Association educational work also gave on attaining its majority, women an introduction to Sir Stafford said that there the knowledge of electricity was not the slightest doubt which would help them that during the past twenty- to enter the electrical one years the Association industries and make their and its director, Miss careers there. He hoped Haslett, had made a very the Association would con marked impact upon the Sir Harry Railing and Mr. H. Nimmo tinue its activities in con development of the use of nection with young people electricity in the home. The originators of and so train more and more to take an the Association had seen that electricity intelligent interest in their scientific and technical surroundings. Women who during the war had become acquainted in factories with modern materials and labour-saving methods would want some of these materials and methods applied to their domestic problems. He hoped too that they would have learnt something of the differences between rubbish and well- made and lasting domestic appliances. It was essential that some body such as the E.A.W. should study the problems of domestic electrical equipment and advise the manufacturers upon the best way of meeting the housewife’s needs. This country had long had the reputation Mrs. Kathleen Lonsdale and Sir Robert and for the soundness and solidarity of its Lady Watson-Watt mechanical and electrical construction. could be used to do for the ordinary house Indeed sometimes the complaint had been wife a great deal she had hitherto had to do made of the over-solidarity of articles herself. It was a new universal servant which could be employed at very low cost provided the people responsible for it understood the housewife's needs and the housewife under stood its possibilities. Sir Stafford regarded this organised effort to free the ordinary housewife from the unnecessary drudgery of domestic affairs as an absolutely necessary Mr. H .J. Randall. Mr. E. R. Wilkinson, Mr. R. P. Sloan and Mr. P. V . H u n ter corollary to the grant October 19, 1945 E l e c t r ic a l R e v ie w 545 which were not really required to last so tions gave support and encouragement long. But as regards convenience and which enabled the Association to achieve appearance in such articles as domestic maturity. Among names especially remembered were Dr. S. Z. de Ferranti, Col. R. E. B. Crompton, Sir John Snell and Lord Hirst. The Associa tion had grown up in an atmosphere of healthy criticism and its own achievements were the vindication of its existence. This environment provided the stimulus and was a continual challenge to appliances we had allowed ourselves too often to be dictated to by the technician and production engineer. This had resulted in our not having produced such attractive or convenient articles as our rivals in other countries. He hoped the E.A.W. would continue to press for articles it considered attractive and most convenient for the housewife, not for the production engineer. What the E.A.W. thought good, attractive and convenient for the British housewife would also appeal to housewives abroad and so help to develop our export market without which we could not get our food or raw materials. The electrification of our Top : Mr. J. R. Jones, Mr. homes had hardly W . J. Jones, Mr. J. Ecoles begun yet and the and Mr. F. H. Pooles tremendous n e w Centre : The Duchess of Kent with Lord Brabazon programme of house and Mr. V. W. Dale, inspecting the “ Perspex'* building was a great cooker opportunity for intro Left : Miss Haslett shows Mrs. R. G. Casey, wife of ducing the electric the Governor of Bengal, servant to all of them. the Ferranti stand Acknowledging the tributes paid by Sir go ahead into new Stafford, Miss Haslett fields of work. The thanked E.D.A. for electrical industry had its “ birthday gift ” in its hand a great gift of the exhibition.. The which would amelio E.A.W., she said, owed rate the lot of the much to the prominent women of Britain by men whose belief in giving them labour- its work had made it saving homes and possible, the first surroundings a n d among them being Sir would do much to Andrew Duncan, then offset the strain of war. chairman of the The provision of well- Central Electricity Board. The Electricity designed, well-equipped homes was a matter Commission, the Institution of Electrical which the electrical engineer had to consider Engineers and the great electrical organisa- .apart from his preoccupation with electrical 5 4 6 E l e c t r i c a l R e v ie w O ctober 19, 1945 developments as such. The electrical industry rôle in radio work in the Services, as well as must increasingly provide for the needs of the B.B.C., and had provided two-thirds the ordinary women and must increasingly of the radar operators who took such a decisive part in the Battle of Britain. “ A Woman Physicist Looks Back ” was the title of the address by Mrs. K. Lonsdale, one of the first two women to be elected to membership of the Royal Society. She traced the course of electro-physics from the discovery by Madame Galvani of animal electricity to modern X-ray crystallography. Sir Harry Railing, speaking on “ After the Scientist, the Engineer,” said that it was impossible to draw a clear distinction between pure and applied science, or for that matter between science and engineering. However brilliant the research work and the contribution to scientific knowledge of the leading university scientists, their efforts would have no industrial results unless there were scientific brains within industry to understand their work and its aims and which had the vision to see how these discoveries could be used for the benefit The new Bendix automatic washing m achine make use of the skilled services of women in its own developments. At the reception held at Gros- venor House in the evening a presentation was made to Miss Haslett in the form of a jade and diamond ring. The presentation was made by Mrs. M. B. Jackson and Mrs. F. N. Rendell-Baker. An illuminated birthday greeting employing new devices of neon and fluorescent lighting was arranged by the Electric Lamp Manu facturers’ Association. Speaking on “ Women and Wire less ” at the Institution of Electrical Engineers on Friday afternoon, Sir Robert Watson-Watt said that women had not yet provided famous names in the science of radio as A W .A.A.F. officer has the “ Perspex ” cooker explained to her they had done in other spheres. The reason for this was to be found in of industry and so the community generally unimaginative training and he hoped the In due time the engineer would solve the Association would add to its objects the problem of slowing down the energy releasee securing of improvements in this direction. by the atomic bomb to manageable pro There was, however, an important place portions ; this would lead to practical applica for women in radio. Once a device had been tions which would displace other forces usee originated there was a very important field at present. The jrian of science considerec open to their talents, especially on the pre- his work fulfilled when he had made a new production and manufacturing sides. During discovery; the engineer rendered his servict the war women had played an important- when he demonstrated how the discover) October 19, 1945 E l e c t r i c a l R e v ie w 547 could be employed for the use of mankind. and horticulture. The school exhibit, with Before attending last Friday’s meeting Lady a modern classroom, not only emphasises Swaythling and Miss Haslett accompanied the importance of teaching electrical subjects Her Majesty Queen Mary on a tour of the exhibition. Women’s Electrical Exhibition The exhibition at Dorland Hall is remarkable for the way in which it indicates in a comparatively small space both the part played by women during the war and also the tremendous scope for electricity not only in our homes, but in our schools and health and public services. Radio communication is the side of their work shown by the A.T.S., who have also provided electrical and instrument mechanics, welders, etc. The W.R.N.S. are demonstrating the operation of the magnetic mine, while the W.A.A.F. show how' radar assists in the interception of enemy aircraft. Various air craft instruments such as the The catering exhibit distant-reading compass, the master compass, variation setting corrector and but also points out some of the electrical pilot’s repeater, produced by Ferranti, Ltd., aids to learning—radio, the cinema, the indicate work done by women during the epidiascope, workshop apparatus, etc. Small war, other aspects of their activities depicted models of cookers, potato peelers, mixers, being communications, medical services and vegetable boilers, fish fryers, etc.,are employed civil defence. in the catering exhibit, while the horticultural Passing from the past and present to the section includes electrical soil-heating future, the display gives glimpses into some apparatus and special convection heaters of the opportunities now open to women, giving a humid or dry atmosphere. at the same time demonstrating progress A particularly attractive exhibit, in which already made or anticipated by electricity the Electric Lamp Manufacturers’ Associa in the various spheres—the nursery, tele tion has co-operated, demonstrates by a vision, health, schools, housing, catering, series of foreshortened and wired miniature stage sets, depicting the chief rooms of the' house, hall and stair way, dining room, lounge, etc., how light can be employed decoratively as well as for utility. The im pressive results obtain able by the new lighting methods are not out of the reach of the average house wife. The shadowless high - intensity illu mination provided throughout the exhibition is achieved 548 E l e c t r i c a l R e v ie w O ctober 19, 1945 by the employment of fluorescent lighting. Other new apparatus typical of new designs Apart from a number of models, plans and just beginning to come on to the market photographs drawing attention to the include Jackson and English Electric cookers, importance of kitchen planning, there is Hotpoint and English Electric washing also a full-sized model dining-kitchen com machines, a Jackson washing boiler, a pletely equipped with the latest labour- Belling towel rail and various types of saving electrical appliances—horizontal type heating apparatus, including models of the cooker, water-heater, refrigerator, clothes- convection type. A demonstration model washer, airing cupboard, fan, clock, etc. cooker made of “ Perspex ” shows the visitor with a plentiful supply of plug-points for how simple the apparatus really is both in various other kitchen aids such as kettle, construction and operation. Another interest iron, mixer, etc. The washing machine ing exhibit is a “ Redifon ” radio-frequency is making its first public appearance in this heater, which with a loading of i kW at 30 country. Washing 10 lb. of dry clothes, million cycles a second, can be used to make this Bendix unit is completely automatic. crustless bread for sandwiches, and cook It fills itself with water, washes the clothes, meats evenly and thaw out frozen fruits in a triple rinses, damp dries them, empties and matter of seconds. Films are used to show cleans itself and finally switches itself off. the way in which electrical methods can save All the housewife has to do is to put in the energy and eliminate labour on modern clothes and soap and set a switch. motion-study lines. PARLIAMENTARY NEWS By our Special Reporter Electricity Supply Re-organisation.—Upon the opposed by a minority; upon what grounds he re-assembly of Parliament on October 9th, the was delaying his consent to the scheme; what Minister of Fuel and Power (Mr. Shinwell) independent investigations his Department had told Mr. A. M. F. Palmer that he hoped to conducted in respect of the proposal; and if he make a statement in the near future upon the would reconsider his position with a view to Government’s policy on electricity supply giving permission for the proposed development. re-organisation. In a written reply, Mr. Silkin stated that after Col. Thornton-Kemsley asked the Minister full consideration of all the representations made, of Fuel and Power if he was aware that the his predecessor found the proposal open to electric power companies had set aside £100 objection on planning grounds and decided, in million for post-war expansion, but that the consultation with the Minister of Fuel and Government’s proposals for nationalisation Power, that if the occasion arose he would be of this industry had created an uncertainty bound to refuse consent to the scheme. He had which was unfavourable to industrial expansion; since been informed by the company that it and what steps he proposed to take to ensure was taking steps to meet the demand for addi that cheap power was made available at the tional power by the installation of plant else earliest possible date in all rural areas. where and in these circumstances the question Mr. Shinwell said that he was aware of these of a decision on the original proposals did not post-war development schemes and in con now arise. sidering the re-organisation of the electricity S. G. Brown, Ltd.— O n O ctober 10th Mr. supply industry he would not overlook them nor Sparks asked the First Lord of the Admiralty the necessity of improving electricity supplies whether S. G. Brown, Ltd., Acton, was to in rural areas. In reply to a further question, continue to be owned by the Government. Mr. Shinwell said that he was bearing in mind Mr. Alexander replied that the future of the the desirability of avoiding dislocation of the company was under consideration and he was supply to rural areas. not able to say what the ultimate decision Asked by Mr. Butcher whether it was proposed w ould be. to co-ordinate the gas and electricity industries, Mr. Shinwell said that he proposed to make a Broadcast Relay Systems.—In a reply to Mr. Randall, the Assistant Postmaster-General statement on the future of these industries at an early date. (Mr. Burke) said that no decision had yet been reached on the questions whether the under Durham Power Station.—Mr. C. F. Grey takings of broadcast relay companies should be asked the Minister of Town and Country acquired on the expiration of their licences, Planning if he was aware that the proposal of or \vhether the development of a Post Office the North-Eastern Electric Supply Co. to erect service should be revived. The number of a power station at ICepier, Durham, had the exchanges in operation was 274 and at June 30th support of all the local authorities and was only last there were 584,018 subscribers October 19, 1945 E l e c t r ic a l R e v ie w 549 Electric* Motor Maintenance Notes on Experience in a Large Factory a PROPERLY- By D. T. Evans, a .m .i.e .e . during starting or on -tm. organised system of short - time overloads. plant inspection can prevent breakdowns Generally the setting does not exceed 25 per which are likely to occur where maintenance cent, above the full-load current of the motor. merely consists o f attending to faults as they In very exceptional cases, the over-current arise. When all factors are considered a release is set above this value to avoid planned maintenance scheme is economic. unnecessary tripping, but generally a suitable Some details of a preventive maintenance time lag overcomes this difficulty and at the scheme at a large factory are given below. same time allows the starter to trip on a Written reports are made out by the sustained overload. electricians in connection with breakdowns The majority of burn-outs on three-phase and an analysis is made of all faults. The motors are caused by single-phasing and electricians carry out inspections in accord to prevent this starters must have over- ance with printed instructions issued in the current releases sufficiently sensitive to trip form of a booklet. Weekly reports are made when the current rises to a dangerous value. on the inspection of important items of In connection with thermal overloads, where plant, matters requiring attention being noted, starting and stopping are controlled by means and on any faults that have occurred during of a float, pressure or thermostatic switch the period. A record card is provided for (as in pumps, refrigerators, compressors each piece of apparatus, giving brief details and heater fans) the starter is provided with of its history. Charts a resetting device ; are used to ensure otherwise the starter that maintenance is I I I I I I would continually being carried out at LI L2 L3 switch in and out on a the required times. fault, and this would At six - monthly ultimately lead to the intervals, a detailed breakdown of the examination of all motor. plant is made. For Circuit conditions example, motors are in a normal three- cleaned out and ten phase delta - wound sion and alignment motor with one phase of adjustable belt open are shown in drives are checked ; Fig. 1. At full-load bearings are inspected the opening of one of for lubrication ; the supply leads causes brushes on DC and the line current to rise slip-ring motors are to almost two and one- examined, contacts half times normal, and being renewed where the current in the necessary ; connections heavily loaded phase to are checked for tight rise to nearly three ness; oil in dashpots times normal. At 65 is checked for correct 20 AO 60 80 per cent, load the line level. Resistance tests PER CENT OF FULL LOAD current would rise to are carried out, and a 120 per cent., and the current in the heavily special note made Fig. I.—Currents at different loadings when one where readings are phase of a delta-wound AC motor is open- loaded phase to 150 circuited per cent, of its full- below 1 megohm. A = Current in lines ; B = current in windings Y Overload trips in and Z ; C = current in winding X load value. An over- motor circuits are load-release unit, set given the lowest rating which will provide at 25 per cent, above full load, would permit satisfactory service, i.e., without tripping one of the stator windings of the motor to 550 E l e c t r i c a l R e v ie w October 19, 1945 undergo 50 per cent, overload without stalled current of the motor, the fuses blowing protection. As the heating is proportional in stead. to the square of the current, the stator As the starting current of a motor is often • winding would probably burn out if single- considerably more than the normal full-load phasing were prolonged. current, the fuses must be rated high enough For meeting these conditions, additional to avoid blowing when starting u p ; they are no-volt coils have sometimes been suggested, thus rated far too high to provide any measure which would trip if the supply voltage were of protection for the motor windings. Since cut off in any phase. If the fault is on the fuses must be large enough to ensure reason motor side of the no-volt connection, how able continuity of operation, their protective ever, the device fails to act, while if it is on effect is negligible against anything but a the supply side, the motor itself will usually develop sufficient voltage to keep the trip from releasing. To meet such conditions, a “ single- phasing preventor ” has been used; this embodies three thermal strips (for a three-phase motor), which carry the main current, and an auxiliary switch for connection in the tripping circuit of the main con trol equipment. Broadly speaking, fuse sizes are selected so as to provide for the following conditions: For squirrel- cage motors up to 40 FIP, approxi mately three times full-load current; for slip-ring motors from 20 to 100 HP, approximately twice full load current; for DC motors, approximately twice the full-load current. For other sizes the fuse size is individually selected, depending upon dead short-circuit. The planned maintenance the type of motor and nature of drive. scheme referred to was devised by the con Proper discrimination must be obtained sulting engineers, McLellan and Partners. between the fuses and starter overload protection. In all cases, the aim is to protect the motor from overload by the overload United States “ Cartel ” Charge trips rather than by the blowing of fuses. O N October 10th the United States Depart Fig. 2 gives typical fusing and tripping times ment of Justice brought a civil action against of cartridge fuses and thermal overload the General Electric Co., the Westinghouse trips to suit a 7¿-HP three-phase 400-V Electric Corporation, their two subsidiaries— motor, having a full-load current of 11-5 A. International General Electric Co. and the Westinghouse Electric International Co.—the Electrical Apparatus and Export Association, Correct Discrimination Obtained which is jointly owned by the major companies, The graph shows the result of using a 30-A charging violation of the anti-trust laws in sales of electrical equipment for export. It was fuse. With fuses and magnetic overloads alleged that since about 1931, the five defendants set at 125 per cent, of motor full-load current, “ have been continuously and are now engaged simultaneous operation occurs in about 57 in Unlawful combination to restrain trade with sec. at 62 A, i.e., about six times full-load foreign nations in electrical equipment,” and that in 1930, the two subsidiaries and leading current. Below this current, the overload British, German and Swiss electrical equipment trip operates first and correct discrimination manufacturers formed an international cartel, is thus obtained, the overload trips dealing with its headquarters in England, for the purpose with any overload up to the current of the of eliminating competition between themselves in all countries, except the United States, stalled motor (usually six to eight times Europe, Russia, Japan, Canada, Newfoundland, full-load), the fuses clearing only short turkey, Spanish colonies and France. The circuits. If a 25-A fuse were employed no j . j orHarlisation allegedly functioned as a bid depository,” by means of which business was discrimination would be secured up to the allocated and prices fixed.— R euter (New York). October 19, 1945 E l e c t r ic a l R e v ie w 551 London Transport Hoard Retirements and Appointments WN our last week's issue we reported the subsequently becoming electrical engineer (dis m retirement of Messrs. T. E. Thomas and tribution) and, in 1939, chief electrical engineer. J. H. Parker from the service of the London Mr. S. R. Geary, O.B.E., who is appointed Passenger Transport Board and a number of to the post of general manager (road services), new appointments. We now give some personal details of the officers affected by these changes which take effect on October 20th. Mr. Thomas has been with the Board since its inception in 1933; he was appointed general manager of the tramways, having been general manager of the L.C.C. Tramways when the Board absorbed them. He commenced his career in 1899 with the London United Tram ways and was resident district engineer when they were taken over by the Underground group in 1910; he was then placed in charge of publicity and development work. He joined the L.C.C. in 1917 as development supe'rin- tendent and was successively traffic manager Mr. S. R. Geary M r. G . F. S in c la ir and (in 1930) general manager. After three began his transport career with the L.C.C. years with the L.P.T.B. he was appointed Tramways in 1905. He rose to the position of general manager (road transport) in control operating superintendent in 1919, and on the establishment of the Board he retained this position. In 1936, he was appointed operating manager (trams and trolley-buses) and in 1941 operating manager of the Board’s central buses. He was awarded the O.B.E. in 1944. Mr. G. F. Sinclair, C.B.E., M.I.E.E., who becomes deputy general manager (road services) received his engineering training with Dick, Kerr & Co., and during the 1914-18 war served with the R.A.F. in France. He later became general manager of the Kilmarnock Engineering Co. He was appointed assistant rolling stock engineer to the L.C.C. Tramways and soon after became rolling stock engineer. When Mr. T. E. Thomas Mr. J. H. Parker the Board was formed he was appointed rolling of the Board’s buses, trams and trolley-buses. He became general manager in 1943. Mr. Thomas was awarded the C.B.E. in 1941. Mr. J. H. Parker, chief electrical engineer to the Board, is to retire on account of ill- health. He, too, was with the L.C.C. Tram ways when the Board took them over. Upon leaving the Royal Technical College, Glasgow, Mr. Parker served an apprenticeship with Alley & McLellan and in 1904 went to the Greenock Corporation Electricity Department as a draughtsman, subsequently becoming chief assistant electrical engineer, in 1915 he was appointed deputy electrical engineer at Messrs. P. Croom-Johnson and A. A. M. Durrant Croydon and after ten years there he was appointed borough electrical engineer of West stock engineer (trams and trolley-buses). He Hartlepool and later general manager of the has been intimately concerned with the con Transport Department as well. While at version of tramways to trolley-bus operation West Hartlepool he was responsible for the and has played an important part in the design change-over from trams to trolley-buses. He of new trolley-buses. became electrical engineer of the L.C.C. Tram Mr. P. Croom-Johnson, M.Inst.C.E., who is ways in 1930 and when the L.P.T.B. took over taking charge of the electrical engineering continued as electrical engineer (tramways) department as well as the civil engineering Df 552 E l e c t r i c a l R e v ie w October 19, 1945 department, with the title of chief engineer, was engineer (trarhs) with the Board; in 1939 was educated at Clifton College and in 1912 was appointed ch(ef stores superintendent ; and in appointed assistant engineer in the Liverpool 1943 chief engineer (civil). Tramways and Highways Department. After Mr. A. A. M. Durrant, C.B.E., the new chief war service in 1914-18 he returnea to Liverpool, mechanical engineer (road services) was formerly but in 1923 went to the Ministry of Transport. with the London General Omnibus Co. He He became assistant permanent way engineer became engineer of the company in 1932 and in the L.C.C. Tramways Department in 1924 on the formation of the Board was made engineer and a year later was appointed permanent way (central omnibuses). His appointment as chief engineer. He continued as permanent way engineer (buses and coaches) follow ed in 1935. PERSONAL and SOCIAL News of Men and Women of the Industry d~kNE of the new members of the Advisory with the design of international telephone Council to the Committee of the Privy systems. During his service with Standard Council for Scientific and Industrial Research Telephones & Cables he was successively is Dr. C. C. Paterson, O.B.E., F.R.S., head of technical superintendent, engineer of manu the Research Organisation of the General facture and manager of the Southgate factory. Electric Co., Ltd. Among the members retiring Mr. E. C. Willis, secretary and sales manager upon the completion of their term of office to the Bristol Corporation Electricity Depart is Sir Felix Pole. ment, has been appointed general manager of Sir Guy Locock is resigning the position of the undertaking, while Lieut.-Commander H. E. director of the Federation of British industries,' Barrett, who before the war was assistant which he has held for fourteen years, having manager to Central London Electricity, Ltd., joined the Federation as and since 1939 has been serving in the Royal assistant director in 1918. Navy, becomes chief engineer. Mr. A. J. The Grand Council of Newman, who occupied the joint position of the F.B.L has recorded chief engineer and manager, retired at the end its appreciation of the of last year, when his deputy, Mr. I. A. D. wisdom, ability and tact Pedler, who is now also retiring, was temporarily with which he has carried appointed acting general manager and engineer. out his duties, and at Mr. Willis’s salary will be £1,600 rising to its special request Sir £2,000, while Mr. Barrett’s will be £1,500 rising Guy has agreed to to £1,800. continue in office until Major C. A. J. Martin, G.C., M.C., B.A., his successor is installed A.M.I.E.E., has been released from the Army and thereafter to act in and has resumed his position with Crompton an advisory .capacity. Parkinson, Ltd., as sales manager for fractional- The Council has unani N. V. Kipping HP motors. For the past five years, Major mously approved the Martin has served with the Royal Engineers on appointment as director-general of Mr. N. V. bomb disposal and he was awarded the George Kipping, J.P., M.I.E.E., to take effect as early in Cross in 1943. H e won his M .C. in the 1914-18 the New Yedr as his release from Government war. duties can be arranged. During the war, Mr. Lieut. J. F. Herbert, A.M.I.E.E., representative Kipping was head of the Regional Organisation in Malaya of the English Electric Co., who has of the Ministry of Production. With the end of been a prisoner of war in Siam, is now on his the war and the assumption by the Board of way hom e in S. S. Indrapoera. Trade of the continuing functions of the Ministry Mr. William Bird, managing director of the of Production, he was appointed as Under Engineering Lighting & Equipment Co., secretary of the Board of Trade and became Ltd., is to be mayor of St. Albans. This will responsible, inter alia, for the Regional Boards be his second term of office as mayor, the first as a whole and for the Board of Trade’s own being in 1934. Regional Organisation. Before joining tlfe Ministry of Production Mr. Kipping was works Mr. J. J. Ireland, mains superintendent of manager of Standard Telephones & Cables, the Mid-Lincolnshire Electric Supply Co., Ltd. Ltd., has been promoted to the position of assistant manager. Mr. Kipping was educated at University College School and London University and The first event arranged by the Social Com spent a period of two years in the Research mittee of the South-East London Branch of the Section of the G.P.O. Then for four years he A.S.E.E. proved very successful; it took the was transmission engineer with the International form of a meal at a London restaurant, followed Western Electric Co., being concerned mainly by a visit to the Cambridge Theatre to' see “ A October 19. 1945 E l e c t r i c a l R e v ie w 553 Night in Venice.” At the restaurant Air. A. D. Among recent promotions in the technical Cullings. v ice-chairman. spoke of the Branch's staff of the Bradford Electricity Department are work during the war and Mr. E. H. Jesty out the following:—Mr. K. W. Coupe, A.M.I.E.E., lined the plans of the Social Committee, of which from second mains assistant engineer to first Mr. B. H. Gurr is chairman. mains assistant engineer: Mr. E. A. Gillett, A.M.I.E.E.. from third mains assistant engineer Mr. Ian D. Campbell. B.Sc.. M.I.E.E.. to second mains assistant engineer; Mr. C. A.M.I.Mech.E., generation engineer to the Hull Ludlam. from substations maintenance assistant Electricity Department, has been appointed to"third mains assistant engineer. deputy general manager and engineer to the Sheffield electricity undertaking. Mr. Campbell, Major W. H. Storey, television manager of who is a native of Darlington, is forty. He was Pye, Ltd., up to September, 1939. and thereafter educated at Darlington on active service with the Royal Signals is Grammar School and at expected to return to this country this week to the University of Lon take up an executive position with the Pye don. King's C ollege. company. Major Storey has been in a prisoner- After serving as a college of-war camp since the fall of Singapore but is apprentice with Metro- reported to be in good health. Before the war p o I i t a n - Vickers, he he was a member of the Television Develop became junior engineer ment Committee. in the company's plant Mr. Ernest Mutimer of the sales service section departm ent in 192$, of Alliance Wholesale, Ltd. completd tewenty- leaving a year later to five years with the company on September 29th, become assistant svvitch- and was presented by the directors with a gear engineer to the cheque. English Electric Co., Mr. I. D. C am pbell Ltd., at Stafford. In Mr. R. W . Field, illuminations engineer to the 1934 he joined the Blackpool Corporation is due to retire next Manchester Corporation Electricity Department month but he is to remain in the service for as assistant electrical engineer in the construction another year. department. From 1934-37 he acted as assistant Mr. E. J. R. Kay. assistant mains engineer at and mechanical electrical engineer to the Air Bedford, has been appointed mains engineer in Ministry Works Directorate. He then spent the City of Oxford Electricity Department. two years as technical assistant to the Dundee Major S. J. J. Vaughton, M.C., T.D., has Electricity Department, and in 1939 was been appointed a director of Higgs Motors, appointed to a similar position at Hull, becoming Ltd. He received his early education at King generation engineer in 1943. He holds a first Edward's School, Birmingham, and joined class honours degree in engineering and is an associate of King's College. Hull Corporation Electricity Committee has arranged to retain for another year the services of Mr. Staniforth. constructional engineer, in view of the extensions now in hand. Mr. \V. T. Andrews, chief engineering assistant in the Poplar Electricity Department, has been promoted to the position ot deputy borough electrical engineer and manager. Mr. P. T. Forth, district engineer with the North-Eastern Electric Supply Co., Ltd.. has retired after nearly forty years' service with the com pany. Major S. J. J. Vaughton Mr. A. W. Fisher Mr. K. Sowerbutts, B.Sc., A.MJ.E.E., whose appointment as technical assistant and sub Higgs Motors as a sales engineer over twenty station engineer with the Dover Corporation years ago. From 1926 to the outbreak of war Electricity Department was recently approved he was sales manager, and during this period the Town Council, • has withdrawn his made several business trips abroad. During application. the 1914-18 war he was with the Royal Tank Among the awards made by the Junior Corps in France and Russia, and he has recently Institution of Ensincers in respect ot papers and been released after six years with the Royal lectures delivered during the 1944-45 season is Warwickshire Regiment. one (.T o o k e v Award! to >Ir. H. K. Hewett for a Mr. A. W. Fisher. B.Sc., A.MJ.E.E.,. has paper on ” Electric Traction in Great Britain.” recently resumed his position as manager of Alderman H. E- Rhodes, who is to be the the London branch of Higgs Motors and has next Mavor of Preston, has been chairman of been appointed a local director. He was ^ Electricity Committee for seventeen years. educated at King Edward's School, Binning- 554 E l e c t r i c a l R e v ie w O ctober 19, 1945 ham, and London University where he took position until 1926 when he was appointed the degree of B.Sc. (Econ.). Mr. Fisher joined general manager of the Dick Kerr works the company in 1921 and after spending about (Preston). In 1927 he was also given control two years at head office was appointed manager of the car works of the English Electric Co. of the London branch, which position he has at Preston. He became general manager of held continuously with the exception of a break the Stafford works of the company in 1928, from 1939-1945. From 1915 to 1920 he served retaining charge of the Preston works, and he with the Royal Engineers, being twice mentioned relinquished control of the three works in 1931 in despatches. to become chief engineer and manager of the Mr. A. E. Tanner, says the B.E.A.M.A. Traction Department of the company. He spent much time abroad studying and advising Journal, has retired from the position of upon electric railway schemes, including systems assistant managing director of W. T. Glover & Co., Ltd., owing to continued ill-health. Mr. in Hungary, Egypt, Poland and Denmark. Tanner has been connected with the Cable He joined the L.M.S. Railway Co. in 1934 as chief electrical engineer; in 1937 he was in Makers’ Association from its early days and acted as chairman in 1918, 1932 and 1938. addition appointed deputy chief mechanical Mr. Tanner has been with Glovers since 1897 engineer; and he succeeded Sir William Stanier when he joined the company as contracts last year. manager and he has been on the board since Mr. Fairburn was chairman of the Con 1907. tractors’ Committee for the Electrification of It is also reported that Mr. Tanner has the Polish State Railways, and he was a member resigned from the board of Enfield Cables, of the Institutions of Civil and Electrical Ltd. Engineers, and of the Institute of Locomotive Engineers. He delivered the Faraday Lecture Mr. W. S. Poole has resigned his directorship in 1941. He had also served on the London of the Atlas Electric & General Trust, Ltd. & Home Counties J.E.A. and the North Wales Mr. H. G. Richards, secretary of Tube Invest & South Cheshire J.E.A., and as a member of ments, Ltd., since the company’s formation the E .R .A . in 1919, has resigned on reaching the retiring Mr. A. G. Cooper.—The death occurred on age and Mr. A. B. Innes Dick has been appointed October 10th at the age of seventy-three of to succeed him as secretary. Mr. Alfred George Cooper, electrical engineer and manager to the Thornton Cleveleys Urban Obituary District Council. Mr. Cooper served his Mr. C. E. Fairburn.—We regret to report apprenticeship with Latimer, Clark, Muirhead that Mr. Charles Edward Fairburn, chief & Co., Ltd., Westminster, and in 1892 was mechanical and electrical engineer of the appointed shift engineer to the Bournemouth & London, Midland & District Electricity Co., later serving in the same Scottish Railway Co. capacity w ith the City o f L ondon Co. In 1895 died suddenly in he was appointed station superintendent to the London on October Sheffield Electric Light & Power Co., and in 12 th. M r. F airb u rn 1899 became electrical engineer and manager was educated at Brad to Colne Corporation where he served until ford Grammar School his transfer to the Ministry of Munitions in and Brasenose College, 1918. After a few years in private business, Oxford, and then spent he became the first electrical engineer and a short period in a manager to the Thornton Cleveleys U.D.C. small general engineer on its inauguration in 1926 and remained in ing shop before this position until his death. becoming a pupil (1910- L.A.C. Sidney C. Angell.—The death occurred 1912) at the Derby in Scotland recently of L.A.C. Sidney Clarence works of the then Angell who for about twenty years was attached Midland Railway. In The late Mr. C. E. Fairburn to the Brighton office of Drake & Gorham 1912 he joined the Wholesale, Ltd., as outside representative. Railway Department of Siemens Bros. Dynamo Works, Ltd., and from 1913 to 1916 was assistant Mr. C. A. Petty.—The death occurred at to the resident engineer on the erection of the Eastbourne on October 9th, after an illness, of overhead line between Newport and Shildon on Mr. Cyril Arthur Petty. Mr. Petty was with the then North Eastern Railway, the first the General Electric Co., Ltd., as London 1,500-V DC line in England. manager for fans and fractional-HP motors; Mr. Fairburn received a commission in the he had had forty-two years’ service with the com pany. R.F.C. in 1916 and later was experimental officer in the R.A.F. eventually becoming Mr. L. G. Carter.—Mr. Leonard George major. In 1919 he joined the English Electric Carter managing director of the Carter Elec- Co., to organise a heavy traction department r," n Ro,™ford> d'ed on September for railway electrification and he held this 22nd, after a short illness. October 19, 1945 E l e c t r i c a l R e v ie w 555 CORRESPONDENCE Letters should bear the writers' names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents' opinions. Chief Engineers’ Salaries facturer of electrical equipment who an nounces to the public that he has such 1WJAY I be allowed to correct the untrue specifications and is prepared to work to statement contained in the letter them, and I believe that there is a really signed “ Unsheltered ” in the E lectrical serious lacuna in electrical services. R eview of October 5th. L ondon, W.C. 1. T . C. A n g u s , The last paragraph shows that the writer D.Sc., A.M.I.E.E., F.I.E.S. has little or no knowledge of his subject, Department of Applied Physiology, because neither the I.M.E.A. nor its Journal London School of Hygiene. has any connection whatever with the ques tion of chief engineers’ salaries. Fleetwood. W . P. L i l w a l l . Rural Supplies Cut-out Load Curves Power Companies’ Resolutions IW3HE National Farmers’ Union announced WOULD refer those interested in cut- last week that the Incorporated Associa out load curves to an article on the subject tion of Electric Power Companies has adopted by F. H. Fullerton in the Electrical Review three resolutions of considerable importance dated January 24th, 1930. In this a very to farmers. The first of these points out that good photograph of the graphic load curve the Association represents nineteen member was included. companies and five associate member com panies whose combined areas cover about Bedford. S. A . D a i n e s . two-thirds of Great Britain. It goes on to say that these companies intend to intensify forth Meeting Consumers’ Needs with their policy of extending their distribution rjiH E inaugural meeting of the Installations systdms into remote rural areas and, in * Section of the I.E.E. was marked by a particular, isolated farms. They will also undertake to prepare schemes for individual stimulating and provocative address by the farms in particular areas of the country. chairman, Mr. Forbes Jackson, who By the second resolution the companies addressed the meeting as a consumer. agree, as a principle of co-ordinated policy, Mr. Jackson pointed out how little effort the to minimise and, wherever possible, to avoid industry and the trade make to find out what capital contributions. In cases where such a the needs of the consumer really are; nor contribution is necessary the companies will are they apt to put before the consumer in an have regard to the estimated revenue from the attractive manner the amenities and services connection, and if the consumer is prepared to guarantee an annual consumption of electricity which even now are available. the amount of the contribution will be reduced A striking example of the latter failing has accordingly. • recently come to my notice. A girls’ school, The third resolution confirms the principle returned from evacuation, is now being of a Standing Liaison Committee working in re-established in one of the Home Counties. conjunction with representatives of the N.F.U. The old buildings have been damaged and, to which either party may refer difficult cases having to re-equip them, the head mistress for consideration and investigation. Individual companies will furnish to this Committee, on naturally wishes to have them fitted up with request, full particulars of such cases within the most up-to-date electrical appliances; their own areas of supply. including a modern lighting installation. She has specified that the lighting of the classrooms should conform to the recom I.E.E. Western Centre mendations of the Illuminating Engineering T HE report of the Western Centre of the Society for schools; but up to the present Institution of Electrical Engineers for the no one whom she has approached, including 1944-45 session records an increase in member ship from 1,666 to 1,800. The average attend the local electricity authority, has been able ance at ordinary general meetings was 50 to help her. She has not been able to find out members and 25 visitors, making a total of 75 how it will be possible to have this work done compared with 76 in the previous year and 41 in 1942-43. It is hoped that now the war is over or who will do it. a much greater proportion of members will I do not know of any contractor or manu attend. 556 E l e c t r ic a l R e v ie w O ctober 19, 1945 Purchasers’ Specifications Stipulations That Should be Avoided ELATIONSHIPS between the manu Guarantee tolerances always had been, and K facturers and users, or purchasers, still were, a vexed subject. Many manu of apparatus pertaining to, but excluding, facturers were in the anomalous position of power lines and cables were commented on having to insist upon tolerances through in the inaugural address in London of their standardisation committees and trade M r . E. T. N o r r is (Ferranti, Ltd.) as chair associations and, at the same time, were man of the Transmission Section of the assuring their customers that they always Institution of Electrical Engineers. designed well within their guarantees. That It was pointed out that the incorporation attitude was not only technically incorrect, of individual experience into specifications but logically unsound and commercially often resulted from a tendency to argue unnecessary. from the particular to the general. A The chief justification for tolerance allow common instance was the prohibition of ances was in relation to efficiency and loss particular materials, which was natural, but guarantees but, since their proper use could it ignored the probability that their apparent not be controlled, they gave the maker unsuitability was due to faulty use, or applica latitude and were open to improper use. tion, rather than to defects of the materials When the purchaser imposed penalties he themselves. introduced a commercial element, so that the risk then assumed both technical and Leave Details to Manufacturers commercial aspects. Specifications should therefore insist as The risk was one of incidence coupled little as possible on details of construction, with detection, involving consequential cost and so avoid any implied request that .the of correction. For example, a maker might maker should guarantee the purchaser’s not know as a technical fact that his product design. Stipulations might complicate design was surge proof; indeed he might be aware and were frequently at variance with other that it was not. But the chance of its having requirements. For example, an exact value to withstand a severe lightning surge being of reactance in a transformer was usually so small, combined with likelihood of its only needed for parallel operation; to fix its failure, that the total risk might well be value exactly might conflict with desired sufficiently acceptable to enable a guarantee efficiency and loss ratios, so in most cases to be offered, which might be misinterpreted an approximate value without tolerance by the purchaser. limits should be allowed. The common call for more onerous tests First Cost and Performance resulted from an erroneous belief that they Another aspect of loss guarantees was the ensured more reliable performance, whereas capitalisation of operating expenditure for it was not possible to determine a stress determining the most economical relationship equivalent of time. The actual *factor of of first cost to technical performance. safety would ultimately be ensured not so Although the importance of that procedure much by tests as by the manufacturer’s was generally appreciated, its application in vital need to avoid failure. practice seldom induced an initial expenditure Therefore specifications should state what exceeding the lowest offer. It seemed there the customer wanted, but not how it should fore desirable to consider not merely be done, leaving design and constructional capitalisation values but also limitation of details to the manufacturer so far as that was their application. Since they involved possible. The common purpose of specifica appraisement of future events in terms of the tions (to enable the customer to purchase present, which could not be done with from any maker, regardless of the latter’s assurance, it was suggested that capitalisation reputation, with assurance of equally satis be regarded as of broad significance generally factory operating performance) did not rather than a specific calculation in detail. apply in general to engineering apparatus The final choice of equipment called for associated with the transmission of electric shrewd judgment and even political antici power. pation upon the part of the purchaser. October 19, 1945 E l e c t r ic a l R e v ie w 557 G.P.O. Developments Progress During the War ^¿O M E of the wartime radio station investigations into the distortion resulting constructional work and equipment from the transmission of voice-frequency design carried out by the Post Office telegraph signals over a single-sideband authorities were reviewed by Mr. A. H. radio-telephony channel, which development M u m f o r d (G.P.O. Engineering Department) was also described in the course of the address. in his inaugural address in London as chair The short-wave “ Musa ” receiving system man of the Radio Section of the Institution (multiple unit steerable antenna) at Cooling of Electrical Engineers. in Kent came into commercial operation in In 1940 it became desirable to set up a July, 1942, signals being received from very low-frequency transmitter of high Lawrenceville, New Jersey, U.S.A., on one power on a new site to act as a reserve to of a group of five frequencies. Comparison the 16 kc/s telegraph transmitter at Rugby. made by observers at the London radio Only three towers could be made available telephony terminal showed that for 75 per in time so they were erected on a plain in the cent, of the time “ Musa ” reception was West Country with anchorages for the aerial distinctly better than by the normal kind triatics on a hill o f steeply sloping side some of single sideband equipment, which was 800 ft. above the plain. The mean effective less acutely directional. •height of the aerial system which was initially 112 metres, or 67 per cent, of the physical Addition of V.F. Telegraph Channels height, appeared to have been reduced by To guard against loss of transatlantic 30 metres by 'the erection o f two medium cables before the invasion it was decided to wave aerials from the same mast structures, apply several voice-frequency telegraph but remote from the hill. The great urgency channels to radio-telephony circuits in a with which the plant was put into operation similar way to land-line practice. Experience had prevented the investigation of the of typical short-wave radio circuits operating phenomena in any detail. on a single sideband basis with triple-spaced Although the standby station was on the aerial diversity had shown that for the bulk point of completion when the Rugby trans of any 24-hour period the errors attributable mitter was seriously damaged by fire early to the radio circuit did not exceed 1 in 5,000 in 1943, restoration o f the latter was deemed to 10,000 characters, which standard essential. The main indoor aerial-tuning approached the limits set by the teleprinters coil had been completely destroyed; pending and the operatives. The policy of utilising its reconstruction, for which special cable was a given frequency band to transmit several needed, an outdoor coil was utilised (design relatively low-speed channels rather than and constructional details briefly outlined in one of high speed (1,000 words per minute) the address) in the form of a cage of copper had been demonstrated to be technically wires 65 ft. in diameter supported by wood sound. pole structures 67 ft. above ground. In conclusion Mr. Mumford referred to the growing use of very-high-frequency Study of Fading Phenomena radio links, operating on a multi-channel Turning to high-frequency developments basis with either amplitude or frequency Mr. Mumford outlined the design of equip modulation and carrying twelve speech ment capable of reproducing fading signals circuits, for bridging gaps over river estuaries of specified types at will by simulation in and between islands and the mainland. the laboratory, which had facilitated the That development was indicative of the design of short-wave receivers for long merging of line and radio systems, which was distance radio circuits. By its use the study so essential to the effective exploitation of of fading phenomena had progressed much the communication art nationally as well as more rapidly than could have been the case internationally. Since such radio links were if reliance had been placed merely on incorporated as repeaters in the trunk net observation of actual circuits. work, it was necessary to appreciate how The value of that artificial test medium that factor affected the design of the very- had been demonstrated in the course of high-frequency portion of the equipment. 558 E l e c t r i c a l R e v ie w October 19, 1945 Views on tlie Vews Reflections on Current Topics ARRANGEMENTS for inspection by Although few of those who listened to British industrialists of German works Dr. Dunsheath’s presidential address at the proceed at an unhurried pace. The Americans I.E.E. could have been aware of all the have, of course, already had a good look round achievements of electrical engineers during the and so, I suppose, have the Russians. But so war, I suppose it is true to say that most of far as British visitors are concerned, transport them had some knowledge of some of these difficulties are said to be causing delay. Eight achievements. But it was the sort of address “ teams ” representing various branches of that deserved a wider public, to impress British electrical industry have been formed upon that public what they owe to the and are “ standing by ” ; a ninth is in process profession. I was therefore glad to see in o f fo rm atio n . last week’s S p ecta to r an article by Dr. * * * Dunsheath somewhat on the lines of his In some directions it seems that the British address but placing particular stress upon the possible peacetime benefits to be derived from Government and the Control Commission are operating quite separately. I hear of a these wartime developments. party of industrialists for whom the Com * * * mission had made all arrangements—except I referred last week to the relaxation of the for departure from this country. Months evening dress rule for the occasion of the elapsed, when out of the blue a Government Victory Ball in aid of the Electrical Industries Department rang up the organiser of the Benevolent Association. This relaxation is party and said it was thought that a visit to emphasised in a leaflet which I have had Germany by representatives of his branch from the E.I.B.A. depicting the probable would be a good idea. In vain, was the state of a dress suit after six "years of disuse caller told that everything had already been and suggesting, also pictorially, possible fixed up. He had been given the job and alternative garbs. It is to be hoped that none could not believe that it was not an original of these suggestions will be taken seriously, th o u g h t. but the leaflet serves as an effective reminder * * * that the Ball is at Grosvenor House, Park I am told that some people from this Lane, on November 9th, and that tickets country who have managed to pay “ un (25s. each) may be obtained from the Electrical official ” visits to German works that they Industries Benevolent Association, 32, Old have actually been looked upon as prospective Burlington Street, W .l. buyers by the Germans. The latter have * * * proudly displayed examples of their products Presumably because the electric iron is and promised delivery within quite a comparatively simple to make and requires reasonable time. only a small quantity of material and labour, * * * its production seems to have become the I did not agree entirely with the remarks recognised means of entry of many new made by Sir Stafford Cripps at the Electrical firms to the electrical market. I say “ com Association for W omen’s twenty-first birthday paratively easy to make ” and this is true luncheon last week regarding the design of inasmuch as that practically anyone with a domestic electrical appliances. British manu small workshop can produce something that facturers have certainly built up a reputation looks like an electric iron (it may in fact for soundness and solidarity of their products; look quite attractive), but is nevertheless in fact they may, as Sir Stafford said, have shoddily made with scant regard to insulation gone too far in this direction but I doubt or earthing, reliability or safety. There are, if their best designed apparatus — after of course, a number of excellent new makes years of “ utility ” goods we may have of irons now coming on to the market, but forgotten what that is like—is to any very the enormous pent-up demand for irons great extent inferior in the matter of con does provide a great source of temptation venience and appearance to that of other to unscrupulous manufacturers to scamp countries. In any case it is my impression their work. Unless the high repute of that manufacturers' technicians and produc electrical apparatus is to be besmirched, the tion engineers are only Too anxious to obtain public must be warned of the unreliability and the views of users of their products as to any perhaps even danger of such poor quality improvements that can be made. Sometimes irons. It will not be long before irons of high they pay too much attention to the in quality will be available in good quantities at dividual requirements of their principal prices usually no higher than those of the customers, the supply undertakings. interior articles.— REFLECTOR. October 19, 1945 E l e c t r i c a l R e v ie w 559 Improving' Power Supply Generation and Transmission Trends IERTAIN trends in the generation and standardisation of turbo-generators on a C1 transmission of power which had “ wholesale ” scale with hydrogen cooling come to the fore during the war period were for sizes of 20,000 kW upward. It was now commented on by M r . W . D ix o n (M erz & being provided for many plants in course McLellan) in his inaugural address as chair of manufacture in this country, being man of the North Eastern Centre of the definitely advantageous for machines above Institution of Electrical Engineers. Having 50.000 kW at 3,000 RPM. Price and recently visited the United States, Mr. maintenance considerations would govern its Dixon was able in some instances to compare adoption for smaller sets. Interest in British and American power station generator standardisation was now being experience. aroused in this country with hope of manu The author said that the maximum facturing advantage. Every endeavour made demand in December, 1944, reached 8,351,000 during the past eight years to improve overall kW, 25 per cent, more than the 1938 figure. thermal efficiency had to a large extent been During the 1944 m.d. period 18 per cent, defeated by the increasing cost of coal. of the installed plant capacity was out of service for one reason or another as com Rotor-Winding Distortion pared with 6 per cent, before the war. When Distortion of the windings of alternator, it subsequently became necessary to shed rotors had caused a good deal of “ outage.” load in the southern areas the plant capacity Something better than the palliatives so out of service from all causes amounted to far tried was needed in view of the definite 2,657,000 kW, over one quarter of the total requirement in this country for two-shift (11,250,000 kW). operation, involving large and frequent The availability of plant in the near future temperature variations. A good deal of the was not likely to be much improved by the trouble was due to rotors being designed for considerable extension programme that had too high a working temperature. Less been authorised because of probable manu flexible copper strip hardened by a definite facturing delays. Suitable sites for new amount of cold rolling to raise its elastic power stations were scarce and the number limit was claimed to permit differential of official bodies whose approval must be expansion without permanent deformation. obtained was growing, so that the programme But the consequent need for more rotor of extensions was likely to be at least a year current would mean a larger commutator late in reaching completion. on the exciter, which would be undesirable on directly-driven machines. Steam Pressure and Temperature The objection would be removed by Most major stations now under con lowering the speed of the exciter, say to struction had been designed to contain 1.000 RPM for 50,000-kW sets needing 50,000-kW sets to operate at 900 lb. per sq. excitation of 180 kW at 450 V. For that in. and 900 deg. F., approximately to 29 purpose gearing of 3 to 1 ratio would appear per cent, efficiency. But one station was to be preferable to a separate driving motor, to operate at 1,250 lb. and 950 deg. F. and although investigations were by no means another at 1,235 lb. and 825 deg. F. with com plete. reheating to 825 deg. F., both estimated to Turning to distribution aspects, Mr. be 30-5 per cent, efficient. At one American Dixon said it was becoming increasingly station certain units were operating at 2,500 evident that the grid system would have to lb. and 940 deg.-F. with reheating to 900 deg. be reinforced in order to cope with growing F., resulting in an overall efficiency of 34 difficulty of bulk transfer of large blocks per cent., which was believed to be highest of power, circuit protection, varying power achieved in any condensing steam station factors in different areas and the decreasing in the world. It was doubtful whether it possibility of siting power stations at would be economical to aim at so high a theoretical load centres. Developments were figure in this country. actually in hand in respect of transformers In America there had been definite and cables for 264-kV transmission and a 560 E l e c t r i c a l R e v ie w October 19, 1945 sample 264-kV circuit-breaker had been The new fluorescent lighting, which had constructed; while it could not yet be des proved such a boon to so many people in war cribed as a production type, its general factories, had not altogether escaped adverse design and arrangement showed distinct criticism. Much of it was misconceived and some due to installation faults and neglect of promise. maintenance. No satisfactory evidence that The performance of small-oil-content it had any ill-effects upon the eyes had yet been breakers had been very good and a limited brought forward. amount of air-blast switchge^r for 132 kV Indifferent lighting was still widespread and would shortly be in commission. Com responsible for much discomfort, strain, prehensive tests had been carried out at irritability and loss of efficiency. Just because various short-circuit testing stations to they were commonplace, these supposedly minor ill-effects of improper lighting were “ prove ” ratings up to 2,500 MVA. British important. There was no need to look beyond and American switchgear development had them to find justification for the efforts of been on much the same lines. No particular their Society to secure better lighting in every design could be said to put the United States field. outstandingly in the lead, but in 1942 the The Society’s Task General Electric Co. of America had in The development of electric lamps was commercial service on a 138-kV system two described in some detail by Mr. F. F. air-blast circuit-breakers of 3,500-MVA M id d l e t o n in his inaugural address as chairman breaking capacity. of the Birmingham Centre of the Society. Cadmium-copper and steel-cored copper In Mr. Middleton’s opinion members of the overhead conductors had been successfully Society had a tremendous task to perform; used on standard towers to extend the main the community must be educated to appreciate grid, but they were more expensive so that how, why and where to see well; the masses steel-cored aluminium would undoubtedly must be made conscious of the many benefits available to them and the claim that adequate be used again when available. Toughened lighting was a profitable investment must be glass insulators continued to grow in proved by facts and figures. The main thing popularity up to 132 kV. They tended to be the Society had to fight for was recognition of slightly cheaper than porcelain, had greater illuminating engineering as a valuable addition surge strength and were more resistant to to the already established professions. mechanical damage and power-arc heating. It was universally agreed that, in peace time, concrete poles could not compete in Export Inquiries cost with wooden ones for 11- and 20-kV 1 1 ' 1 ’ have received the undermentioned overhead lines. inquiries from firms and individuals overseas who wish to secure agencies for British electrical equipment and appliances or to Lighting Practice import them into their territories. We shall be I.E.S. Presidential Address glad to pass on to them replies received from readers which should be addressed to the I N his presidential address to the Illuminating Editors, quoting the number given in paren Engineering Society in London Mr. H. C. theses. We cannot vouch for the standing of W eston pointed out that in the writings of the inquirers and manufacturers replying to them Roman poet Lucretius, who described the atomic will no doubt require the usual references:— theory of matter formulated by Greek philo France.—The Société Civile pour l’Etude sophers, occurred what was probably the earliest d’Equipements de Matériels de Transport, 155, description of glare. Yet, two thousand years Boulevard Haussman, Paris, 8e, which, as its afterwards glare remained one of the most name implies is principally concerned with all common faults of lighting; rules of practice classes of special equipment for transport for its avoidance were features of the new I.E.S. purposes, informs us that it is also interested Code which was about to be issued. in patented mechanical apparatus, as seller There had been a steady rise, during the past or agent for France and her colonies and pro twenty-five years, in the values of illumination tectorates. It is prepared to adapt equipment recommended for most purposes, which had for the French market or te arrange for its been facilitated by the falling running cost of complete or partial manufacture in France. artificial lighting. But the upward trend of Netherlands.—A Rotterdam firm with con recommended standards was justified by accumu nections in the Netherlands, Belgium and France lating evidence of the effects of conditions wishes to import washing machines and wringers, of lighting upon human efficiency. Personal refrigerators, vacuum cleaners, radio sets and efficiency was one of the indices of good health electric cookers and heaters. (X.121.) and that was the proper objective for which Palestine.—Agencies required ifor makers of conditions of lighting should be prescribed. electrical materials and appliances. (X.122.) October 19, 1945 E l e c t r i c a l R e v ie w 561 COMMERCE and INDUSTRY Two Months’ Trade Figures. First Trolley-buses for Brazil. Overseas Electrical Trade exhibited by J. Stone & Co., Ltd., Samples of welding repairs as undertaken on boilers, I N its endeavour to speed up the publication pressure vessels and heavy machine parts were of overseas trade statistics the Board of shown by Anglo-Swedish Electric Welding Trade has now issued summarised particulars Co., Ltd., while G. A. Harvey & Co. (London), of imports and exports during July and August Ltd., showed examples and photographs of this year. These show that exports of electrical special metalwork. goods and apparatus were valued at £1,332,758 Besides being responsible for maintaining its in July and £1,350,653 in August, which com fleet of trams and trolley-buses, the Charlton pares with a monthly average of £1,119,200 works of the London Passenger Transport in 1938. Board produced shells, incendiary bomb parts, The total for the first eight months of the year sections of Bailey bridges, visor parts for tanks, was £8,758,753, against £8,953,603 as two-thirds machine gun components, etc. of the 1938 total. Electrical machinery is not separately shown but exports of all classes of machinery were valued at £2,859,900 in July Call-Up of Young Technicians and £5,468,804 in August, against the 1938 monthly average o f £4,822,297. For the first The Engineering Industries Association, which eight months of the year machinery exports represents more than 2,000 firms in all parts totalled £30,377,710, against £38,578,377 for of the country, has sent a strong protest to the two-thirds of 1938. Government against the call-up of tool makers Electrical goods and apparatus were imported and other young technicians needed for the to the value of £1,912,201 in July and £2,130,689 re-equipment of industry who cannot be replaced in August (1938 monthly average £258,900.) in any reasonable period. The total for the first eight months of the year was £17,081,985 against £2,071,203 for two- Electrical Engineers’ War Work thirds of 1938. During the whole of the war Cooke & Ferguson, Ltd., were engaged in air-frame manufacture, Greenwich Exhibition aircraft machining and welded equipment for Electrical firms figured prominently in an warships. The company began the manufacture exhibition held last week at Greenwich Town of major components for the “ Manchester ” Hall in connection with the local Thanksgiving bomber early in 1939 and later for the Week. Three of the companies who con “ Lancaster.” The components made were tributed to “ Operation Pluto ” by producing one-piece bomb doors, 35 ft. long, the outer the “ Hais ” cable were repre sented:—Johnson & Phillips, Ltd., who also showed a series of photographs of other products, transformers, welding sets, radio and radar equipment, and sub station plant, as well as standard and special cables; Siemens Bros. & Co. Ltd., who displayed specimens of telecommunication and power cables, dry cells and batteries (of which 200 million were produced), waterproof portable telephones, rare gas canisters, “ Sieray ” fluorescent lighting, etc.; and the Telegraph Construction & Main tenance Co., Ltd., which included on its stand “ Telcon ” metals, plastics and cables for radar, “ Telcothene” sleeving (30 million yd. supplied), telephone and Low-pressure arc-welded turbine cylinder for a warship telegraph cables ( 12,000 nautical miles made) and grapnels. Another cable maker, the Saxonia Electric wing trailing edges and ailerons. At the Wire Co., Ltd., which during the war has Victoria Street works the company produced a made 82 million yd. of insulated wires and three-blade hydraulic airscrew hub, later cables, displayed flexible cables, copper strands supplemented by an electrical type. In the latter and “ Insu-glass ” heater wire used for heating variation of pitch is accomplished by means a penicillin tank. of an electric motor. For welding the two half Parts of jet engines, aircraft components, pressings forming the hubs a flash butt welding gears, incendiary bombs, ships’ propellers, machine was developed with a rating of 1,200 headlamp switches, pressure die castings in kVA and capable of dealing with 40 sq. in. magnesium, generator exciters for searchlights, Further machining work was undertaken on the voltage regulators for gunsight controls and “ Lancaster ” undercarriage support beam. torpedo firing mechanism were among the items In addition the company carried out a good 562 E l e c t r i c a l R e v ie w October 19, 1945 deal of welding work for the Admiralty mainly electrical instruments and apparatus, 1,367,000 in connection with the main propulsion fr.; telephone and telegraph apparatus, 1,328,000 machinery for various types of vessel. Among fr.; radio apparatus, 4,916,000 fr.; incandescent this work was the fabrication of l.p. turbine lamps, 866,000 fr.; electrodes, 4,602,000 fr.; cylinders, in some cases weighing as much as and porcelain insulators, 2,641,000 fr. It is 14 tons, necessitating the use of special mani thought that these figures may be of interest pulators. Gear cases and turbine cylinders for to British exporters as showing the lines in thirty-nine warships were provided. which there is likely to be a market when the supply and transport position permits them to R.E. Officers’ Release resume trade. The exchange rate during According to the Berlin correspondent of 1943 averaged 17-35 francs to the £. T h e T im e s , it has been found possible to release over 60 per cent, of the Royal Engineer transport Proposed Anglo-Australian Exchange officers in the British Army of the Rhine in The city electrical engineer of Melbourne, Groups 15 to 18. For other R.E. officers Australia, has written to the Liverpool Electric release dates have been fixed for Groups 17 to Power and Lighting Committee suggesting 20, the average period of detention beyond an exchange of officials. The Committee the normal release date being twenty-six days. proposes that facilities should be granted for It is said that it may be necessary to hold other two members of the electrical engineering R.E. officers much longer. staff from Melbourne to visit Liverpool to gain Simplex-Creda Expansion experience but has deferred consideration of the question whether personnel from Liverpool The Tube Investments group announces that should go to Melbourne for the same purpose. £200,000 is being spent on new equipment for the Simplex-Creda electrical appliance South African Telephone Requirements works, Oldbury, near Birmingham. Mr. A. G. E. Briggs, formerly deputy steel controller, According to the Capetown correspondent of who was recently elected to the board of Tube the Chamber of Commerce Journal, the South Investments, Ltd., with the appointment of African Post Office authorities hope next year assistant managing director, is in charge of the to spend a large sum on telecommunications, developments, which will not interrupt existing most of which will be devoted to telephone production. The plan will result in an increased development. It is estimated that the Depart supply for the home market of electric cookers, ment will have to spend at least £2,500,000 fires, wash-boilers, kettles, irons, etc. every year until 1951 if it is to meet applications for telephone service with a delay of not more Strike at Neasden than a few months. It will be almost impossible Last week 150 men at the L.P.T.B. generating to overtake the accumulated arrears for about station at Neasden went on strike over, it is five years and the public may expect no relaxa stated, a grievance dating back to 1933 when tion of restrictions for a long time. In 1938 Greenwich power station workers were paid there were 1,000 people awaiting telephones and higher rates. The strike is unofficial. All in 1939 there were 2,700. By 1944 this figure Underground services have been running had risen to 22,000 and is now 31,000. In normally. According to a report in the daily addition 7,500 farmers are waiting for service press, about twelve administrative staff accus and 4,000 for extensions. tomed to light clerical duties have been doing the work o f the 150. Safety in Engineering Construction The Ministry of Labour and National Service Trolley-buses for Brazil has just issued a pamphlet which contains a Among recent overseas orders received by preliminary draft of regulations under the the Associated Equipment Co., Ltd., is one Factories Act, 1937, as to safety, health and from the Sao Paulo Tramways, Brazil, for the welfare in connection with work of engineering supply of four A.E.C.-English electric trolley construction. Copies can be obtained from buses. These vehicles will be of the post-war, H.M. Stationery Office, price 9d. two-axle large capacity, single-deck type specially designed by the joint manufacturers for overseas Lamp Publicity operation. They will be used by the Sao Paulo “ Ekco ” lamp publicity for the new season Municipality on an experimental trolley-bus route which, if successful, will lead to an has been planned to give dealers the widest extensive system. measure of support within present restrictions. The order was obtained in the face of severe Large painted posters on prominent sites in competition from American manufacturers key towns throughout the country, are being through the persistent efforts of the English accompanied by Press advertisements in national Electric Co’.s Brazilian distributors. This magazines, etc. Although paper regulations trolley-bus system will be the first to operate prohibit the production of normal display in South America. material a number of sales aids including posters, window bills and window stickers, Swiss Imports from Germany will shortly be available. All are printed in full colours and although they have been printed Details of imports into Switzerland from 0n ffc*alnJed paper little is lost in this unusual “ Greater Germany” are given in the B o a r d o f method of reproduction. Literature and price Trade Journal. The tables show that during cards for dealers’ use are available and public 1943 imports of goods of an electrical nature literature will be reintroduced as soon as regu were as follows:—Dynamo-electric machinery, lations permit. E. K. Cole, Ltd., are prepared to 1.513.000 francs; hydro-electric machinery, help dealers on a 50/50 basis with the cost of 540.000 fr.; electricity meters, 1,014,000 fr.; local newspaper advertising and a range of October 19, 1945 E l e c t r ic a l R e v ie w 563 colourful cinema slides is available. These ment for the “ Oboe ” aircraft installation, slides, incorporating dealers’ names and experimental anti-submarine apparatus and addresses, will be prepared free of charge if the Mark III G.H. receiver. At the present required. time the company is developing several new Similar publicity arrangements are being instruments for the peacetime Air Force and made by the associated company, Ensign the Inter-Services Radio Measurement Com mittee. Trade Publications British Thomson-Houston Co., Ltd., Rugby.— Illustrated list (No. 5620-1) descriptive of cubicle- mounted type G.M.C. grouped motor control for power station auxiliaries, material-handling plant, pumping stations, etc., the gear within individual motor components being safely accessible without shutting down the whole installation. Consolidated Pneumatic Tool Co., Ltd., 232, Dawes Road, London, S.W.6.—Coloured folder (S. P. 271) dealing with special applications and sizes of straight-Iift hoists, illustrating how the air-operated ram can often relieve manual effort. Applicants for copies of these publications should write on their firms’ business note- paper. “ Ekco” window bill and Ensign poster Trade Announcements Lamps, Ltd., whose range of sales aids will shortly include posters, window corner pieces, Enfield Cables, Ltd., has transferred its window bills and stickers, etc. Leeds branch office and stores to larger premises at 28 York Place. The telephone number is unchanged. Diesel-Electric Locos for Egypt To provide sales and service facilities in the The English Electric Co., Ltd., is to supply northern area Marconi Instruments, Ltd., has twenty-seven Diesel-electric locomotives to the established an office at 30, Albion Street, Hull Egyptian State Railways for use in speeding up (telephone: Hull 16144) with Mr. D. J. Taylor, the express service between Alexandria and northern representative, in charge. Cairo. The contract was obtained in face of Bullers, Ltd., have returned to their London strong opposition from Sweden.— R e u te r. office at 6, Laurence Pountney Hill, E.C.4 (telephone: Mansion House 9971; telegraphic Persia Buys Communication System address: Bullers, Cannon, London). The Talbot Tool Co., Ltd., has appointed The Persian Government has bought for Norman Kinnersley & Co., 3, John Street, £300,000 all the British telephone and telegraph Bristol, as its agents for the West of England for installations set up in Persia during the war at “ Grip ’’ brand drill jig bushes. a cost of £1,500,000.— R e u te r. The Northern Aluminium Co., Ltd., has reopened its London sales and inquiry office ' The Future Coventry at a new address:—11, Bruton Street, W.l. An attractive 44-page brochure illustrated The manager of this office, which will cover the largely in colour has been published by the whole of South-Eastern England, is Mr. E. V. Coventry Corporation entitled “ The Future Hill. A similar office, to cover South-West Coventry ” (price 2s. 6d.). It covers housing, England and South Wales, is being established industry, roads and transport and amenities at Rogerstone, Newport, Mon., where the company has a large works. generally. The temporary head office at Reading of Apparatus for the Services Watson & Sons (Electro-Medical), Ltd., is to be closed on October 31st. All correspondence Between 1939 and 1941 Erskine Laboratories, should then be addressed to “ Sunic House,” Ltd., was mainly concerned with the design Parker Street, Kingsway, W.C.2. and production of communications receivers The Electroplant Co. has appointed the for the Admiralty and the “ Y ” Service, but Anglo-French Distributors, Ltd., its sole agents thereafter concentrated on the provision of for the whole of the French Empire. special radar test gear and certain airborne Morphy-Richards, Ltd., have opened offices equipment. The diversity of this test gear was at 121, Victoria Street, Westminster, S.W.l, considerable, but the more important items were to which all matters relating to sales and sales signal generators for “ G. & G.H.” ; signal accounts should be addressed. generators, wavemeters, modulators, etc., for Predico, Ltd., has moved to 38, Barretts “ O boespecial apparatus for testing American Grove, Stoke Newington, N.16. radar altimeters and other instruments for “ C.H.L.” “ A.S.V.” “ A.I.” and “ Rebecca- Change of Name Eureka.” The main equipments developed and produced by the company included P.R.F. The Nico Light Co., Ltd., has changed its selectors Mark I and III with ancillary equip name to the Nico Light Engineering Co., Ltd. 5 6 4 E l e c t r i c a l R e v i e w October 19, 1945 Registration of Contractors Need for Support of Voluntary System By A. H. Dykes, M jnst.c.E., m .i.e.e. HAT half a loaf is better than no bread Each applicant receives a copy o f the rules T is an old and wise saying that might and conditions of membership, and if, after well be borne in mind by those who are full investigation and an examination of agitating for the compulsory registration of some of his recent work by one of the electrical contractors and operatives. Board's inspecting engineers, he is approved, In 1921 the Institution of Electrical he pays an entrance fee of five guineas. Engineers called a conference of interested Certificates o f registration are renewable parties to consider the registration of electrical yearly .on an annual payment o f two guineas contractors as a means of indicating to the (which constitutes the normal income of public the status and competence of firms the Register). Before renewal of the engaged in installation work. It was decided certificate is granted each year the Register that such a register would be of assistance communicates with the appropriate Local if it included all con Advisory Committee and, if necessary, tractors who carried another inspection is made to see that the out their business on proper standard of work is being main satisfactory lines, as tained and that any faults pointed out by it would enable the the inspector have been remedied. general public to place AH firms or individuals doing good work their orders for work and honourably fulfilling their obligations knowing that if they are eligible for registration irrespective of should have any cause whether they are members o f any trade of complaint, either of association or not, and whether they are bad workmanship or large or small, the sole object being to help breach of contract, the public and the industry. they could look to an Up to December 31st, 1944, 3,752 applica Mr. Dykes has been official independent vice-chairman of the tions for admittance had been received, body to investigate the Registration Baard and at the same date 1,329 firms were on matter. sin ce 1925 the Register; on December 31st, 1938, the A voluntary Registration Board was number on the Register was 1,723, the falling- formed of representatives of the following off being due to wartime causes. bodies :—The Institution o f Electrical En gineers ; the Institution of Electrical Engineers Demand for Compulsion (Irish Section); the Incorporated Municipal Objection has been taken to the Register Electrical Association; the Electrical Con because if a contractor is struck off for good tractors’ Association ; the Electrical Con cause, or his original application is not tractors’ Association of Scotland ; the British approved he can stiU carry on business for Electrical and Allied Manufacturers' Asso whoever cares to employ him. Those who ciation; the Association of Consulting raise this objection might equaHy weU Engineers ; the Electrical Wholesalers’ Fed object to the Medical Register because a eration; the London and Home Counties doctor struck off the roll can still practise, J.E.A. ; and the Central Electricity Board. even if he cannot sign a death certificate. A licence was obtained from the Board of The Register was constituted - on a Trade as a company not operating for profit, voluntary basis, in accordance with the long- and at the beginning of 1924 the Register established British custom, which has served commenced work. Since then, for over us so well in the past, but an outside com twenty-one years, the Board has worked mittee has now for some time been agitating through its Executive Committee of ten of its for Government registration of contractors members investigating all applications for and operatives on a compulsory basis. As membership and being helped by 122 Local an original member of the Board, and Advisory Committees set up all over the since 1925 its vice-chairman, I have naturaUy United Kingdom. had to consider very carefully the present October 19, 1945 E l e c t r i c a l R e v ie w 5 6 5 situation. Whilst the nation is crying out If and when, however, Parliament should for the relaxation of restrictions on trade and pass a compulsory registration Act the individuals I doubt very much whether Parlia question of the examination and registration ment is likely to pass an Act now to make of operatives will be carefully studied and I registration compulsory. If, however, all have no doubt that the then members of contractors desiring compulsory registration the Register will be able and willing to will support the Register by applying for undertake any further responsibilities imposed admission, and if all those employing con on them. tractors will go only to those on the Register, I was glad when a representative of the their object will soon be obtained, as only a Electrical Trades Union stated at a recent small field of work will be left for un meeting that “ the Union is prepared to registered contractors. withdraw the trade cards of operatives who When the present paper shortage is ended have been found to be incompetent.” No the Register will return to its pre-war doubt the members of the Electrical Con practice of circulating each year a full list tractors’ Association will note this and report of those on the Register to Government all such cases to the E.T.U. Committee. Departments, engineers of supply authorities, 1 would much prefer disciplinary action to consulting engineers, architects and other be taken by the operatives’ own union interested parties all of whom could do great rather than by an outside authority. service to the Register. In the meantime In the meantime it seems a pity that a full information can always be obtained full discussion of the problem cannot be from the Secretary, 13, Victoria Street, held by the Institution of Electrical En S.W.l. It is hoped also that the Press will gineers, the mother of the present scheme, lend its powerful aid by giving the work and also by the Royal Institute of British of the Register the fullest publicity. Architects, which is also vitally interested. ELECTRICITY SUPPLY Change-over at Hove. New Plan for Glen Affric. Blackburn.— Sales a n d D e v elo pm en t.—The £322,000. This was announced by Aid. H. Corporation has agreed to the establishment of Varley, chairman of the Electricity Committee, a sales and development section of the electricity at a recent meeting of the Town Council. undertaking. T ariff fo r W e l d in g .—In view of the likeli hood of a general demand for the installation Bradford.— H o u sin g P l a n s.—The Electricity Committee is to provide supply to housing of welding plants in small w'orkshops and estates at a cost of £44,000. garages, the Electricity' Committee has adopted the following tariff : £1 per annum per kVA of Su b st a tio n .—A site for a substation has been obtained at Buttershaw. the continuous rating of the plant, with the same running charge as is applicable to small Cardiff.— N o F u r t h e r E x tensions Y e t .—The power consumers, the tariff to be subject to Central Electricity Board has intimated that power factor correction devices being installed owing to the shortage of plant it is not in a by the consumer so that the overall pow'er position at present to authorise a further factor shall not be less than 0 -8. extension of the Roath power station but has C o l le c t io n A rrangements.—The property promised that the claims of Cardiff will not manager is to collect from the tenants of tem be overlooked in the Board’s plans for the porary houses the 7d. weekly electricity standing future. charge and Is. on account of electricity con H ire-P urc h a se Sc h em e. — The Electricity sumed. Committee has asked a sub-committee to S u p p l y t o P u m pin g St a tio n .— The Elec consider a proposal by the city electrical tricity Committee has obtained sanction to engineer that a limited hire-purchase scheme afford an additional sufiply to the pumping for cookers and wash boilers should be restarted station at Whispering Well and is to proceed on revised terms. with the requisite works at a cost of £1,700. Cheltenham.— S u p p l y to E sta t e.— Sanction Gateshead.— Street L ig h t in g .—The North- has been obtained to borrow £11,405 for mains Eastern Electric Supply Co., Ltd., has been and substation for the supply to the Lynmouth asked by the*Town Council to prepare a scheme Farm estate. It is stated that the complete for fighting all the streets by electricity. scheme for the provision of a supply to all Hove.— C h a n g e-o v er .—Application is being houses, a total of 5,000, will cost £80,000. made for sanction to borrow £105,225 for the Chesterfield.—P ro posed A rea E x t en sio n .— completion of the change-over scheme and to The Corporation’s scheme to extend its elec- utilise £30,000 from the reserve fund for changing city supply over a large area of N.E. Derbyshire, consumers’ appliances. The Electricity Com for consent to which application has been made mittee states that it is most desirable to com to the Electricity Commissioners, will, if mence this work as soon as labour and materials approved, involve an expenditure of over are available. 566 E l e c t r i c a l R e v ie w October 19, 1945 Hull.—R est a r t in g H ire S ch em es.— The Elec Shropshire very thinly populated to which a tricity Committee is seeking permission to supply could only be given at a heavy initial borrow £50,000 to finance the resumption of loss. These were dealt with as profits from the cooker hiring scheme and £25,000 for the other parts of the area permitted, and in this water heating schemes. connection £80,000 had been voted to develop E le c t r ic P u m p in g .—The general manager a new area of 86 square miles from Wellington has reported upon his negotiations with the in the north to Rushbury and Stanton Long in city engineer with regard to bulk supplies the south, and from Shirett in the east and for the pumping station, stating that after Leebotwood in the west. A canvass would be consideration of the relative costs of Diesel oil made as soon as possible and work would and electricity it had been decided to recommend begin as labour and materials were made electricity. available. Referring to housing, Mr. Heathcock O il A c id it y .— I n order to cope with trouble said that of 81 local authorities of which records due to acidity of oil in transformers and switch- had been obtained, 39 were arranging for their gear, the Electricity Committee is to provide temporary (houses to be “ all-electric,” and 29 equipment, including three-wheel runabout, were electrifying to the extent of 50 per cent, or tanker, filter and vehicle, storage tanks, etc., at more. an estimated cost of £3,000. Woolwich.— S h o r ta g e of L a b o u r .— It is L o a n s.—Sanction has been obtained to reported that the Electricity Committee, borrow £46,816 for distribution extensions and “ gravely perturbed at the present state of £ 1,000 for consumers’ apparatus. affairs,” is asking the Ministry of Fuel and Nelson. — S u p p l y to R o u g h l ey A r e a .— Power to grant the highest possible priority The Electricity Committee is to extend supplies in the provision o f labour for extensions at the to the Roughley area. Globe Lane generating station. Newcastle-on-Tyne. — I nstallations in N e w Overseas H ouses.—The City Council is obtaining tenders for electrical installations in 182 American Australia.— Str ik e at B u n n e r o n g .— Union houses in Eastfield Avenue, Walker. men have threatened a complete stoppage of Newport (Mon.).— J u b ilee.—The Corporation electricity supplies to Sydney following a Electricity Department is this week celebrating statement by a County Council official that its jubilee. discharged soldiers would be employed to replace 600 strikers at the Bunnerong power Scotland. — G len A ffr ic P r o je c t . — The North of Scotland Hydro-Electric Board states station. The power station dispute has already that two schemes are being considered in the lasted for a month because 600 strikers, against neighbourhood of Inverness, namely, Affric the advice of their union leaders, refused to do and Findhorn-Duntelchaig. In its examination shift work under the terms of an arbitration of the Affric scheme the Board had had court award.— R e u te r. particularly in mind the scenic beauty of Glen Eire.— N e w P o w e r St a t io n .—A reservoir Affric and the proposals for making a national and power station between Celbridge and park there. One of the principal amenity Leixlip form part of the Liffey hydro-electric objections to schemes for water-power in scheme, the estimated cost being £315,000. Glen Affric in the past has been the large The construction plans have received official fluctuation which would occur in the level of approval but the work is unlikely to start until the raised Loch Affric and Loch Beneveian. early next year, probably in April or May. The Board expects, in due course, to promote No tenders have yet been invited by the Elec a scheme in which the rise and fall in the levels tricity Supply Board. The new station will of these lochs will be restricted within limits have a capacity o f 4,000 kW. About 400 considerably less than were proposed in 1941. yd. above Leixlip a dam and fish-pass will be erected. Above the former the reservoir will Watford.—C h a r g es in R u r a l A r ea .—A request by the R.D.C. that charges in the rural extend for about two miles in a south-westerly district should be at the same rates as those in direction. The scheme will flood about 150 the borough is being considered by the Elec acres. tricity Committee. T r a in in g S c h e m e. — The E.S.B. has established a two years’ training course for L o a n s.—The Electricity Committee has obtained sanction to borrow £2,614 for supplying which applicants must be under twenty-si\ the Bushey Hall estate and is seeking sanction years of age on January 1st, 1946. The course to borrow £ 10,000 for substations and distri is open only to graduates in mechanical and bution plant. electrical engineering of universities or recognised institutions. Westbury (Wilts).— “ A ll-E l e c t r ic ” H ouses. —At its last meeting the Urban District Council decided to install only electricity on the new TRANSPORT housing estate. Glasgow.— R e po r t o n T ro l ley -buses.—The West Midlands.—D ev elo pm en t in S h r o p transport manager has prepared a report on the sh ir e .—The benefits which electricity had advisability or otherwise of making provision brought to town and country and future for the use of trolley-buses in the post-war developments which it was hoped to make programme for the replacement of the Transport were dealt with by Mr. C. Heathcock, chair Department rolling stock. man of the West Midlands Joint Electricity Southend-on-Sea.—Y ea r ’s W o r k in g .— A gross Authority, when addressing representatives of profit of over £30,000 was made on the Corpora local authorities in Shropshire at Wellington. tion s transport system during the year 1944-45, He said that only very small centres of popula a surplus of over £19,000 remaining after meeting tion and isolated farms remained without a debt charges. A total of over 17 million supply. There were, however, stretches of passengers was conveyed. October 19, 1945 E l e c t r ic a l R e v ie w 567 Pow er and Prosperity The Task Now Facing Industry ETHODS of ensuring national pros adhered to in order to “ complete the job perity formed the theme of the address by the contract date.” There could be no given by Mr. E. R. W il k in s o n (commercial waste of man-power on non-productive manager, C.E.B.) as president for the second work. There was an obvious need for year of the Association of Supervising thorough investigation into the whole process Electrical Engineers. of distribution, which bulked so largely One of the principal barriers to the proper in the man-power budget. The problem understanding of immediate national could be solved by substitution of more problems, said Mr. Wilkinson, was the machine methods for manual work. changing value of money. He used a series of graphs to indicate why and how public 25,000,000 HP of Motors Wanted and private “ doing without ” had failed There was nothing new in mechanisation, to create “ any draft on the future.” The but Mr. Wilkinson believed the stage to be manufacture of goods for civilian use had now set for an advance of that kind on a been reduced to a much greater extent quite unprecedented scale. There should be than civilian expenditure thereon. There exacting and co-ordinated scrutiny of all fore during the transitional years many industrial processes to ensure that at every millions over and above normal current link in the industrial chain electricity was private expenditure, would have to be spent substituted for manual labour if there to restore the situation to what it would was any prospect of even a fractional gain have been without wartime limitation. in productive efficiency. An overall total The graphs were further used to impart of something like 25 million HP of electric some meaning to the annual adverse balances motors would be required in the factory on income account by analysing national trades of this country alone, apart altogether transactions on capital account. They from the extractive industries, before the illustrated the cumulative extent to which American scale of utilisation in comparable the net provision of new capital had fallen industries could be approached. short of the pre-war standard amount. The HP of equipment of this country’s Thus to make good war arrears the pre-war industries must be doubled to obtain the rate of capital formation would have to be increased productivity that was vital to immediately doubled. national future welfare; it would be a race against time and not less urgent than the Why Increased Output is Necessary war effort had been. That must be the The enormous expansion, even on pre-war keystone of national reconstruction. The values, of foreign indebtedness incurred relative importance of all other factors could during the war was pointed out and an be gauged from the fact that the energy attempt was made to assess post-war pro requirements of industry per worker employed duction needs in terms of quantity of goods increased by something like 35-5 per cent, and services required. It was thus indicated between 1924 and 1935. In the same period that there was a national need for an output the net output per worker at a common at least 25 per cent, greater, and possibly as price level rose by 37-5 per cent. In other much as 40 per cent, greater, with a labour words greater utilisation of power accounted force that could not effectively rise very for nineteen-twentieths of the enlarged much above the 1938 level and might easily productivity achieved in that period. fall below it by from 5 to 10 per cent. A very much larger average output per worker George Ellison Picture at Glasgow would be required to prevent the national The picture “ Skill,” painted in the works position deteriorating very rapidly. of George Ellison, Ltd., by Dame Laura Knight, There was nothing daunting in the R.A. (and reproduced in the Electrical Review magnitude of the task. Productivity per of May 11th, p. 678), has been transferred from man-hour increased by 30 per cent, between the Royal Academy to the Royal Glasgow Institute of Fine Arts Exhibition, Kelvingrove 1924 and 1935, but an exacting “ time and Art Galleries, Glasgow and will remain there progress schedule ” would need to be until January. 5 6 8 E l e c t r i c a l R e v i e w October 19, 1945 FIAWCIAE SECTIOX Company News. Stock Exchange Activities. The Calcutta Electric Supply Corporation. Ltd., Reports and Dividends is paying an interim dividend ot 3 per cent, Dubilier Condenser Co. (1925), Ltd.— After tax free, the same as last year. dealing with the accounts and referring to the The Cawnpore Electric Supply Co., Ltd., has strong balance sheet which justified the doubling announced an interim dividend of 3 per cent. of the ordinary dividend, the chairman (Mr. (same). W. H. Goodman), who presided at the annual meeting, alluded to the company's wartime activities. He said that there was considerable New Companies co-operation with other manufacturers in this J. A. Brown & Partners. Ltd.—Private com country and in the United States to whom they pany. Registered October 5th. Capital, were asked to supply much technical and £5,000. Objects: To carry on the business of manufacturing information which, but for the electrical contractors, manufacturers and war, would have remained their own con repairers of, and dealers in, electrical plant, fidential property’. Apart from their normal equipment and signs, electro-medical work, products, such as condensers and resistors, radio and television systems, etc. Directors: they had designed and produced in very large J. A. Brown. 281. Lyndon Road. Sheldon. numbers certain special items,’ one of which Birmingham. 26: J. W. Parkes, 3. The Moum, was the “ delay-network" component of Gravelly Hill. Erdington. Birmingham. 23 and radiolocation apparatus. As to the future, he G. H. Baster. Lincoln House, Pershore. said that the change-over from war to peace Secretary’: J- W. Parkes. Registered office: production entailed considerable factory re 110a, Dale End. Birmingham, 4. organisation which was well under way. They had already received substantial orders from W. J. Allsop & Son, Ltd.—Private company. overseas. Registered October 6th. Capital, £5,000. Objects: To carry on the business of refrigera The Adelaide Electric Supply Co., Ltd.. tion and electrical engineers and contractors, proposes to pay a final dividend of 31 per cent, cold storage warehousemen and contractors, on the ordinary stock (against 5 per cent.). etc. Permanent directors: W. J. Allsop, and A Bill has been introduced in the South Mrs. B. Allsop. both of The Cottage. Newton Australian House of Assembly for the estab Road. Torquay; S. W. E. Allsop and Mrs. lishment of a South Australian Electricity Trust, Violet A. Allsop. both of 156, Windsor Road, which the Government will appoint to take over Torquay. Solicitors: Hooper & Wollen, the Adelaide company in accordance with the Torquay. Registered office: 36, Torwood recommendations of the Royal Commission Street, Torquay. (Electrical Review, October 5th). Debentures which the Trust w ill be able to issue to share Manifold Machinery Co., Ltd.—Private com holders instead of cash will bear interest at pany. Registered October 6th. Capital, 4 per cent. £5.000. Objects: To carry on the business of The Cables Investment Trust, Ltd.—Income manufacturers of, and dealers in, electrical for the year ended June 30th last amounted machinery, plant and apparatus, lamps and to £341.983 (against £344.902), the net revenue fittings, wireless apparatus, valves and fittings.' being £220,579 (£223.032). As reported last etc.. C. C. Poole. M .P., Caverswall, Streetly week, the ordinary dividend is maintained at Lane. Four Oaks, is the first director. Solicitors: 5 per cent, by a final payment of 3 per cent.: Wallace Robinson & Morgan. Birmingham. £288,729 (£258,150) is carried forward. Registered office: 21, Hermitage Road, Bir mingham. Britannia Electric Lamp Works, Ltd.—The dividend of 7 per cent, recommended is in Varilectric, Ltd.—Private company. Regis respect of the eleven months to March 31st, tered October 5th. Capital, £100. Objects: when the net profit was £8,101. Last year a To carry on the business of manufacturers of, similar dividend was paid for the twelve months and dealers in, engineering products, electrical ended April 30th, the net profit being £8,433. appliances, domestic and wireless requisites, etc. Directors: F. W. Davis, 24. Ravensmead The London Electric & General Trust. Ltd., Road. Bromley and T. J. Gilbert, 86, Addington by a final payment of 3 per cent, is maintaining Road, West Wickham. Registered office: 46a. the year's distribution on the ordinary stock at 5 per cent. Finsbury' Square, E.C.2. The British Thermostat Co., Ltd.. proposes to Electrical Appliances Manufacturing Co., Ltd. pay’ an interim ordinary dividend of 74 per cent, —Private company. Registered in Belfast (same). September 29th. Capital. £20.000. Objects: To carry on the business of electrical, radio and The River Plate Electricity & Other Securities mechanical engineers, etc. Subscribers: R. Corporation. Ltd., is again paying an interim Neilson and W. S. Park, both of 53, Chichester dividend of 2 per cent. Street, Belfast. The Ever Ready’ Trust, Ltd., has again declared Whittington & Son, Ltd.—Private company. an interim dividend of 3 per cent, on the ordinary Registered September 18th. Capital, £500. and deferred shares. Objects: To acquire the business of radio, Cinema-Television, Ltd., records a net profit electrical and general engineers carried on as of £50 372 for the year to April 30th last (against “ R. Whittington & Son,” at Corner Shop, £42,177). Ewhurst Road, Cranleigh, Surrev, etc. October 19, 1945 E l e c t r i c a l R e v ie w 569 Directors: W. Whittington, Heatherlea, St. Nicholas Avenue, and R. W. Whittington, Companies’ Returns Glendoone, Guildford Road, both Cranleigh. Statements of Capital Registered office: Corner Shop, Ewhurst Road, Cranleigh, Surrey. H. J. Cash & Co., Ltd.— Capital, £25,000 in £1 shares. Return dated April 11th. 20,000 Charlton Electrical Appliances, Ltd.—Private shares taken up. £15,000 paid. £5,000 con company. Registered September 27th. Capital, £1,000. Objects: To carry on the- business of sidered as paid. Mortgages and charges : Nil. electrical engineers, etc. Directors: C. P. Automatic Internal Telephones, Ltd.— Capital, Charlton, 28, Lavender Road, Leicester: and £5,000 in £1 shares. Return dated May 1st. F. H. Farmer, 55, Humberstone Gate, Leicester. All shares taken up. £5,000 paid. Mortgages Registered office: 55, Humberstone Gate, and charges: Nil. Leicester. Sussex Electricity Supply Co., Ltd.—Capital, Hope Jones (Lighting), Ltd.—Private company. £197,000 in £1 shares. Return dated May 2nd. Registered October 1st. Capital, £1,000. All shares taken up. £197,000 paid. Mort Objects: To carry on the business of electrical gages and charges: Nil. engineers, etc. First directors: S. E. Hope Seaton & District Electric Light Co., Ltd.— Jones, 10. Carlton Crescent, Southampton, Capital, £50,000 in £1 shares. Return dated lamp shade manufacturer, and three others. Secretary: J. Barr. Registered office: 43, May 2nd. All shares taken up. £50,000 paid. Bedford Place, Southampton. Mortgages and charges: Nil. Brvterlite Electrical Supplies. Ltd.—Private Salisbury Electric Light & Supply Co.,' Ltd.— company. Registered in Dublin September Capital, £125,000 on £1 shares. Return dated 24th. Capital, £100. Objects: To carry on the May 2nd. All shares taken up. £122,500 paid. business of manufacturers of, agents for, and £2,500 considered as paid. Mortgages and dealers in all kinds of electric lamps, shades, charges: £15,700. fittings, etc. Subscribers: A. J. Short, 37, Vincent Switchgear Manufacturing Co., Ltd.— Dartmouth Square, Rathmines, and A. E. Capital, £10,000 in £1 shares. Return dated Ashton, 6, Westmoreland Street, Dublin. December 31st, 1944 (filed May 17th, 1945). Wise Products (London), Ltd.—Private com 7,948 shares taken up. £7,948 paid. Mortgages pany. Registered September 25th. Capital, and charges: £3,000. £500. Objects: To carry on the business of Electric Service Co. (Birmingham), Ltd.— manufacturers of, and dealers in, machinery, Capital, £2,500 in £1 shares. Return dated electrical and radio appliances, etc. Subscribers: August 15th. All shares taken up. £1,250 B. Beaton, 6, Goulton Road, E.5, is the first paid. £1,250 considered as paid. Mortgages director. Registered office: 146, Bishopsgate, and charges: Nil. E.C.2. Bolton Electrical Traders, Ltd.—Capital, Elstone Electronics, Ltd.—Private company. £1,500 in £1 shares. Return dated July 10th. Registered September 25th. Capital. £500. 1,000 shares taken up. £1,000 paid. Mortgages Objects: To carry on the business of manu and charges: Nil. facturers of, and dealers in, electronic appliances, Rotapex, Ltd.—Capital, £5,000 in £1 shares. etc. Subscribers: G. C. Sager, and M. L. Return dated April 23rd. 101 shares taken up. ClifFe, both of City Chambers, Leeds, 1. £101 paid. Mortgages and charges: Nil. Directors: E. H. Elstone, A. C. Farnell and A. Wolfenden. Mortgages and Charges Kay Trading Co. (Manchester), Ltd.—Private Keller Electrical Industries, Ltd.—Satisfaction company. Registered October 4th. Capital, in full on September 29th of series of debentures £100. Objects: To carry' on the business of registered July th, 1940, securing £1,800. manufacturers of, and dealers in, electric 8 lamps, reflectors, bells, fires, cookers, fans, insulators and accessories, etc. Directors: Receiver Released E. Herz, 21, Belvedere Court, Lyttelton Road, Hamrad Wholesale, Ltd.—J. W. Lewis, 181, N.2, and H. B. Alexander, 6, Elmfield Avenue, Kensington High Street, W.8, ceased to act as Manchester, 8. Registered office: 11, Albert receiver on September 28th. Square, Manchester, 2. Dexters (London), Ltd.—Private company. Bankruptcies Registered October 6th. Capital, £1,000. H. Beaumont, electrical engineer and radio Objects: To carry on the business of electrical, dealer, 207, Luck Lane, Paddock, Huddersfield. wireless, mechanical and general engineers, —Application for discharge to be heard on etc. Directors: F. W. Dexter, 30, Greenhill November 7th at the County Court House, Avenue, Caterham; F. C. Dexter and Mrs. Queen Street, Huddersfield. M. K. Dexter, both of 1, Tillingdown Hill, Caterham. Registered office: Commonwealth P. C. Pinney and A. E. Miller, electrical House, High Holbom, W.C.l. dealers, trading as “ Granby Service Co.” 4, Granby Street, Littleport.—Proofs for dividends Pilkingtons Plating (Cardiff), Ltd.—Private by October 31st to the trustee, Mr. T. Pollitt, companv. Registered October 6th. Capital, £2,500. " Objects: To carry .on the business of 41, Sidney Street, Cambridge, Official Receiver. electricians, electrical contractors, electro-platers, J. Boult and J. H. Bolt, electricians, trading as radio and electrical engineers, etc. “ John Boult.” 3, Grosvenor Street, Chester.— D irectors: J. Pilkington and Mrs. I. Pilkington, Supplemental dividend of 2s. in the £ payable both of 14 Cyncoed Crescent, Cardiff. Regis at the offices of the Official Receiver, Hunter tered office : 29a, Atlas Road, Canton, Cardiff. Street (Friends’ Meeting House), Liverpool, 3. 570 E l e c t r i c a l R e v ie w October 19, 1945 in Palestine Electric “ A.” South American STOCKS AND SHARES stocks are rather better. Anglo-Argentine T uesd a y E v e n in g . Tramways Incomes strengthening to 7, and fBJHE new session of Parliament soon started to Brazilian Tractions to 30. Atlas Electrics hold make its influence felt in Stock Exchange their rise to 8s. 3d. Cable stocks are steady and markets. By announcing its terms for Great Northern Telegraphs rose to 364 and nationalising the Bank of England, the Govern reacted to 35. Marconi Marines at 36s. 6d. ment gave a lead to the direction in which have eased off and Canadian Marconi are this process might be related to industries unaltered after their reaction to 18s. 3d. coming within the scope of the Labour Party’s Equipment and Manufacturing intentions. The policy of repayment applied to the Bank cannot justly be considered as For investment that is not particular about likely to affect other companies and industries. receiving a 5 per cent, rate of interest on its Nevertheless, the indirect result has been a money, the group of electrical manufacturing hardening of values in the electricity supply and equipment companies offers attractions market, and also to shares in companies which appeal. Some people prefer to have engaged in the heavy branches of industry. their money in a company that possesses Home Railway stocks at first went ahead, but promising prospects, the current rate of dividend soon lost part of their burst of brightness. being disregarded in view of possibly increased distributions to come. Johnson & Phillips, for Electricity Supply example, at 80s. pay 3J per cent. Henley’s' Telegraph Works give 34 per cent. Telegraph The prospect of nationalisation as it concerns Constructions now up to 60s. 5d., pay 34 per the electricity supply industry continues to cent. Siemens at 40s. return 3 } per cent, on the exercise some restraint upon prices. From the money; so do London Electric Wire & Smiths, slump that overtook them at the time of the standing at 40s. Ericssons at 50s. yield the Labour Government’s return to power, there equivalent, gross, of 4 per cent. Automatic was a fairly substantial recovery, but the Telephone “ B ” deferred shares can be effects of the uncertainty are still apparent in bought at 67s. at which the return is hardly to-day’s prices. It is worth recording that 3J per cent. These yields are based upon the although these have come down, the actual last-paid dividends, which are, of course, liable amount of stock on offer in the market is comparatively meagre. Buyers will take stock to variation. that comes to market at current prices without, Oriental Telephone however, bidding for it in such a way as will To give the yield on British Insulated cause material recovery in quotations. Amongst Callender’s is not yet possible, the first year of other shares to show rises this week are Bourne the working agreement has yet to be completed. mouth & Poole 58s., British Power & Light While on this subject, it may be of interest to 28s. 6d., Yorkshire Electric and Electrical point out that Oriental Telephone & Electric Distribution of Yorkshire, both £2, County of ordinary at their advanced price of 64s. 6d. London 40s. 6d., Clyde Valley 39s., and North pay 14 per cent. The reason is, of course, a Eastern 32s. general expectation that with the Japanese Fluctuations in Prices beaten, the company will be able to resume before long its previously profitable operations. Revo shares at 47s. are Is. 6d. higher. H .T.A. rallied to 27s. 6d. after their recent fall. Philco Ever Ready are a good market at 43s. Brush A fall in Philco shares is the principal move Electricals at half a guinea show a modest gain. ment in the radio section. This followed On the other hand, British Aluminium have last week’s announcement by the company of declined to 39s. 6d. and Vactrics are 6d. lower two years’ results. For the earlier year, a at 22s. Ransome & Maries hold their improved dividend of 25 per cent, is declared, but for the price of 92s. 6d. Enfield Cables at 63s. 6d. are year recently ended the dividend is 10 per cent., better; Switchgear & Cowans, the price of which and on disappointment with this declaration, rarely changes, have moved up to a guinea. the price of the shares fell from 15s. to 13s. Strand Electrics at 10s. 3d. have risen 3d. The reduction is stated by the directors to be due' Electric Constructions are again within a few partly to cancellation of war contracts. The pence of £3. Chloride Electric Storage at board still has in prospect the possibility of 83s. 9d. are -fe better. J. & F. Stone went back distributing a bonus payment. The company a trifle to 14s. 9d. made a new issue of shares last August. In March this year, the company announced Overseas Shares that plans were afoot for a closer working Cawnpore Electrics have put on a florin, at arrangement in the electro-mechanical field with 63s. 6d. Calcutta Trams receded 3s. to 74s. 6d. Aero Engines, Ltd. E.M.I. shares remain at Other Indian issues are uninteresting. Tokyo 33s. 6d., E.K. Cole at 37s. 6d. and Pye deferred Electric sixes are two points down at 544. The at 32s. 6d. Cinema Television deferred are a Palestine unrest led .to a fall of Is. 6d. to 35s. 6d., trifle better at 4s. 6d. for the Is. shares. October 19, 1945 E l e c t r i c a l R e v i e w 41 C o n t w i fa t sq u iv tet - ca ye m a t a M TYPE E STAR DELTA, or DIRECT ON Available up to 50 H.P. 400-440 V • Robust construction. • Correct sequence device. • Overloads— Solenoid type — cut-out in the starting position. • Triple Pole Isolator, when required, incorporated in same casing. WORKS : ASTON, BIRMINGHAM 6 Sales Headquarters : B R E T T E N H A M H O U SE, LA N C A ST ER PLA C E, W.C.2 42 E l e c t r i c a l R e v ie w October 19, 1945 J- —V. The L.S.E. Range of Electric Motors The L.S.E. RANGE in c lu d e s : 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. HADE TO MEASURE The above mechanically interchangeable A.C. and D.C. motors are an example of what we can do when somebody speaks to us nicely. Perhaps c made to measure ’ is not strictly correct, because these are standard machines in essentials, with minor modifications to meet the customer’s requirements. The L.S.E. range is very complete and the great majority of industrial needs can be met exactly by perfectly standard motors. LAURENCE, SCOTT A ELECTROMOTORS LIMITED Electrical Engineers since 1883 N O R W IC H & /fC?N MANCHESTER October 1 9 , 1 945 E l e c t r ic a l R e v ie w 571 Turbine-O il Pu rification Types of Equipment and Method of Operation 10NT1NU0US operation and ultimate filters, which are consequently ineffective ( life of a steam turbine depend upon the since water is not removable in that way. efficiency of its lubrication and, in some The magnetic type moreover cannot cope designs, of the oil used in the hydraulically with non-ferrous impurities. operated governor gear. Higher steam The type of purifier now generally standard temperatures and pressures and increased (Fig. 1) employs the continuous by-pass bearing loads due to heavier rotating masses system in which the purifier is connected to impose an even heavier duty upon the oiling the oil reservoir as an independent circuit. system. An important factor in securing As it usually incorporates pumps and an oil reliability is continuously maintaining the oil heater, it can be in operation whether the in first-class condition. turbine is or not. When the turbine incor Moisture cannot be entirely prevented porates a settling tank as well as the main oil tank, the purifier draws the dirty oil from the lower part of the settling tank and delivers the clean oil to the main oil tank. Water and oil have the common characteristics of fluids that particle size does not have to be taken into consideration. Consequently nor mally immiscible fluids having different specific gravities are easily separated and under good con ditions the water content can be reduced to 0-02 per cent. A common misconception is that, as the centrifuge bowl is of constant diameter and rotates at constant speed, thus giving constant \ \ \\ * V \ ■fir-- \ V v V Fig. I.—De Laval type B.I529 turbine oil purifier ____ *____ AI A r from entering the lubricating system through the glands, etc., and experience proves that, Fig. 2.—Possible paths of solid particles during even with enclosed systems, small particles of centrifuging solid impurities find their way into the oil stream. The centrifuge type of filter alone centrifugal force, solid particles that are meets these requirements and has therefore not extracted from the oil during their been used exclusively for many years for first passage through the bowl cannot be turbine-oil purification. It utilises the differently affected during any subsequent difference in specific gravities between oil, passages. That this is incorrect is shown by water and solids to effect separation and does Fig. 2, illustrating a section of a simple not rely on the physical dimensions of the centrifuge bowl. Particles with a specific particles, as do ordinary and magnetic gravity different from that of the oil are 5 7 2 E l e c t r i c a l R e v ie w O ctober 19, 1945 affected by centrifugal force due to rotation. above and are thus freed from the stream of The behaviour of the heavier particles is oil. They then slide along the underside of apparent. What is not so clear is the action the disc into the sediment space. The of the smaller particles. Speed of rotation purified oil flows inwards along the top surfaces of the discs and is finally dis charged through out lets at the top of the bowl. The disc type bowl is of constant efficiency. One of the factors governing cen trifugal force is the radius of action. In the disc-type bowl separation takes place between the discs. The space between the outer edge of the discs and the inner surface of the bowl is merely a receptacle for hold ing the extracted solids. Without the discs the effective radius for separation decreases as the bowl fills with solids and and the upward rate of flow of dirty oil in efficiency falls off. As the point of “ split ” the bowl are constant. The smallest size of or separation is at a radius smaller than the particle will move outwards through the oil; outside diameter of the discs, the efficiency of the amount of departure from vertical move the disc type is not ment depending upon the difference in affected by the specific gravities. volume of solids contained in the Path of a Small Particle sediment space Thus a small particle “ A ” admitted to but remains con the rotating bowl at the inside diameter of stant until the the wall of oil does not travel outwards quickly enough to reach the inside surface Fig. 5.—Modern in of the bowl before it has travelled to the top direct type electric and is discharged with the oil. During its o il h e a te r second journey, however, it may enter the bowl at a point “ A1 ” nearer the inside sediment space is surface of the bowl, and following a similar filled. path as it did when entering at “ A ” gets Throughput “ home ” before reaching the top of the capacity of the bowl. Thus there is no practical limit to centrifuge does the smallness of the solid particles which can not depend upon be removed by a centrifuge. the kW rating of Separating efficiency can be greatly the turbine. It increased by placing in the separating zone a should be chosen pack of conical discs which divide the liquid according to the rate of addition of impurities into a number of thin layers (Figs. 3 and 4). to the oil, which varies with the mechanical Centrifugal force moves the heavy particles condition of the turbine. A widely adopted outwards by at most 0 02 in., when they relationship is that the centrifuge should be reach the underside of the disc immediately capable of handling the total oil once in six October 19, 1945 E l e c t r ic a l R e v ie w 573 to ten hours, that is, a centrifuge rated at 100 cally taken through the separator and thus *■ Ik gallons per hour would be suitable for a recovered. An extension to the baseplate Ils 3 turbine having from 600 to 1,000 Ûs is gallons in its oil system. d) j ' Lubricating oil temperature is normally too low to give the ■OÇîl highest efficiency of purification. The higher the temperature, the lower the viscosity and the less the :!H«a resistance offered to outward move ment of solids ; also any tendency to sea. émulsification is dealt with more easily. Consequently, preheating to about 140 deg. F is recommended. For »is s abnormal water contamination, an Easa even higher temperature is desirable is s before purification, but this can be sbiBBl obtained by reducing the rate of flow SS3> through the heater. An indirect type E£ St of electric heater (Fig. 5) having ffllSE immersion elements in the water MBS jacket surrounding the oil-carrying be cce tubes is commonly employed. The *SKI Fig. 6.—De Laval special self-contained power station type temperature of the water jacket is e q u ip m e n t is S3 controlled by adjusted thermostats fa SfEB but in any case cannot exceed 212 deg. F, of the equipment contains an oil heater of esaiss as it is at atmospheric pressure so risk of the indirect type. burning the oil is eliminated. We are indebted to the Alfa-Laval Co., Ltd., for providing the information on which this maDera;: New Cleaning Set article is based. tkAsfi A recent development is a self-contained equipment incorporating devices to prevent Ineffective Earthing loss of oil and reduce the amount of attention required (Fig. 6). The drive is by a horizontal A RECENT issue of the Industrial Accident Prevention Bulletin reports a fatal accident in endshield-mounted motor, with an automatic a factory in the following terms:—On the ground- centrifugal friction clutch. The transfer floor of a certain factory there was a sack- pumps are gear driven from the cross-shaft. cleaning machine driven by its own electric motor. On the first floor there were several Ball bearings are used throughout and light machines driven by another motor which lubrication is automatic. The oil inlet had its own starter. The wiring on both floors and discharge pipes are permanently con was in screwed steel conduit, bonded together, nected to the lower stationary parts of the so that there was electrical continuity through out. The electrical system seemed to be entirely separator, so that no joints have to be broken satisfactory but, as events were to show, it was when the covers are opened. not efficiently earthed. Reliance had been The baseplate contains a 22-gal. de-aerating placed on a 3 ft. length of conduit driven into dry ground in sid e the factory. This was not tank with a float-control valve, to ensure that sufficient to prevent danger when there was a the clean oil remains in the tank for a pre current leakage. determined time, and a compartment to One day a spring on the starter on the first receive separated water. In the tank-top floor ( broke. This, when the starter was in the “ off ” position, made contact with a immediately above this chamber is a large conductor inside the casing and caused all drainage hole protected by a gauze strainer the metalwork to become live. So long as through which any surplus oil collecting on the machinery was operating the danger was not apparent, but when the first-floor motor the tank-top drains. The contents of the was stopped just before mid-day the earth ion ci bowl are emptied into this tank before the was not adequate to discharge the leakage of cleaning operation. The water tank is fitted current. As a result the whole of the metal i e t i & with an oil-level pipe through which a work—starter, conduit and even the machine tidelf on the ground-floor—became live. The operator vie sioS continuous discharge of the water occurs, of the sack-cleaning machine touched the spout whilst any oil floating on the water is periodi- >iio n x ï- and received a shock which killed him 574 E i e c t r ic a l R e v ie w O ctober 19, 1945 NEW PATENTS Electrical Specifications Recently Published The numbers under whic h the specifications will be magnetic coils with iron dust cores." 5433. printed and abridged are given in parentheses. March 23rd, 1944. (572220.) Copies of any specification (Is. each) may be Plessey Co., Ltd.—“ Electric power supply obtained from the Patent Office. 25, Southampton system supplying DC voltages from an AC B u ild in g s, London, W .C.2. source." 422/44. April 2nd, 1943. (572252.) ¡•■.L.ALKAN.—"Soluble electrolytic anodes." Radio Corporation of America.—‘ Bonding 1TB. 10627. June 30th, 1943. (572168.) sheet material by high frequency electrical H. Aron.—“ Control of electrical billet energy.” 13139/45. July 31st, 1942. ( Divided heating machines.” 18020. November 1st, 1943. out of 11370/43. (572292.) (572177.) P. W. Rosenfeld.—“ Electrically operated British Thomson-Houston Co., Ltd.— winding means for spring actuated clocks." “ Organo-silicon resinous materials.” 6539/42. 15749. September 25th, 1943. (572207.) May 16th, 1941. (572230.) “ Resinous poly G. R. Shepherd (Westinghouse Electric merisation products.” 10035/43. June 23rd, International Co.).—“ Cooling of gases in 1942. (572272.) recirculating gas systems.” 2591. February British Thomson-Houston Co., Ltd., and 11th, 1944. (572284.) T. H. Kinman.—“ Crystal detectors.” 2992. Standard Telephones & Cables, Ltd.— March 6th, 1942. (572138.) “ Supporting device for vacuum tubes.” Cinema-Television, Ltd., and S. S. West.— 17460/43. June 24th, 1942. (572161.) “ Valve circuits for amplifying alternating Standard Telephones & Cables, Ltd. (Inter currents or voltages.” 21110. December 16th, national Standard Electric Corporation).— 1943. (572214.) " Remote control and indicator equipment." Compania para la Fabrication de Contadores 17421. October 22nd, 1943. (572208.) y Material Industrial, and P. Viteau.—“ Elec Standard Telephones & Cables, Ltd., and tricity meters.” 3066. February 18 th, 1944. S. H. Towner.—” Remote control or indicating (572285.) systems." 18379. November 5th, 1943. (572163.) Marconi’s Wireless Telegraph Co., Ltd.— H. H. Thom pson and A. E. Davies.— “ Arrangements for detecting and measuring “ Magnetic separators.” 17060. October 18th, modulation of carrier oscillations." 5459/44. 1943. (572159.) March 24th, 1943. (572259.) E. Wright.—" Thermally operated electric Mullard Radio Valve Co., Ltd., and C. L- switch suitable for fire detection.” 16382/45. Richards.—“ Thermionic valve circuits." 21756. December 1st, 1943. (Divided out of 571959.) December 28th, 1943. (572216.) (572228.) Mullard Radio Valve Co., Ltd., O. Pressel Amended Specification and A. M. Diepstraten.—“ High tension rectifier anodes.” 3313. February 22nd, 1944. 555645. British Insulated Cables, Ltd., and (572257.) others.—“ Apparatus for compressing and Neosid, Ltd., and M. Grenly.—“ Electro- electrically heating thermo-plastic materials.” Forthcoming Events Saturday, October 20th.— L e e d s .— Electricity Tuesday, October 23rd.— G la sg o w .— Royal Offices, Whitehall Road, 2.30 p.m. l.E.E. Technical College, George Street, 6.15 p.m. North Midland Students’ Section. Lecture on I.E.E. Scottish Centre (jointly with Illuminating “ Colour ” by Dr. Mole, G. H. Foot and K.. A. Engineering Society). " Some Factors Affecting Milligan. the Design of Electric Lighting Installations,’ B rid g e n d .— Mining and Technical Institute, by R. O. Ackerley. 6 p.m. Association of Mining Electrical and Wednesday, October 24th. — Ed in b u rg h . — Mechanical Engineers (South Wales and West Heriot-Watt College, 6 p.m. As for October Wales Branches). Visit of national president 23rd. (Mr. A. Hepburn) and discussion on “ Electrical and Mechanical Aspects of the Reid Report." Friday, October 26th.— L o n d o n .— Institution of Electrical Engineers, 5.30 p.m. Measure Monday, October 22nd.— Birmingham.— Grand ments Section. Inaugural address of S. H. Hotel (Grosvenor Room), 6 p.m. I.E.E. South Richards, chairman. Midland Centre. Chairman’s address by F. J. A b e rd e e n .—Caledonian Hotel, 7.45 p.m. Elliott, reunion and visit of the president. I.E.E. Scottish Centre. Chairman's address Dr. P. Dunsheath. by R. I. Kinnear. Newcastle-upon-Tyne.— Neville Hall, 6.15 p.m. I.E.E. North-Eastern Centre. “ Steel Monday, October 29th.— L o n d o n .— Institution Tower Economics,” by P. J. Ryle, B.Sc. (Eng.). of Electrical Engineers, 5.30 p.m. Informal L o n d o n .—At Royal Society of Arts, Adelphi, discussion on " Should Engineering Concerns be 5.30 p.m. Institution of Electronics. “ Electron Managed by Engineers?" to be opened by the Tubes for Pulse Generation,” by Dr. F. J. G. president, Dr. P. Dunsheath. van den Bosch. Tuesday, October 30th. — M a n c h e s te r .— En B ris t o l.—Small Physics Lecture Theatre, gineers’ Club, 6 p.m. I.E.E. North-Western Bristol University, 5 p.m. I.E.E. Western Centre. Transmission Group. “ Operation, Centre Installations Group. “ Electrical Maintenance and Testing of Overhead Lines Problems Associated with Aero-Engine Testing,” and Associated Outdoor Equipment on AC by A. N. Irens. System s,” by R. C. Halton and Dr. J. McCombe. O c t o b e r 19. 1945 E l e c t r i c a l R e v ie w 5 7 5 t'OXTRACT EVFOR7IATIO\ Accepted Tenders and Prospective Electrical Work Poplar .—Electnciiy Comm.inee. Accepted. Contracts Open 200 meters 1 £686).— Ferranti. * here ~ Ccm iracr^ O p e n ~ m ______“ O&cial borices seerion she d a le o f th e issue L—Electricity Comminee. Accepted. is giren is parembeses. Three I.OOO-kVA transformers i £2.250).—Bonar L one A Co. — O cu>k t 24ih - To«n Coondl Eiacmca. work in connection with the erection Torquay.—Electriciiy Comminee. Accepted. W twenty Swedish hnasc.s at Honoa Park; S - tier.gear for extensions ai Ne-ion Abbon h-agr. architect. Vi m n?- ~ ft ~ ^ power stanor ' £30.064).—B EH. Co. A«5iralia.—Ot-eiasland. — December lOih. State EJacinnty Commission. Boilers. main sets arid house sets. ¡October 12th. ■ Contracts in Prospect jr.—October 31sl Education Com- Paniculars o f « « narks and building schemes fo r minee. Eqajprnexii for Bumiev Technical the use o f elecaical insiallaiion comlraaors and C olige- 'October 12th_i T rader:_ Pubhcaiion in ihis section is no guaranree Thai elecxrical work is definiielr included~ Alleged Bbfkywk—November 12dt Ekctridit" inaccuracies should be reponed 10 the Ediiors. Depanmert. Cable, Bre-extinguishing svster-. and transformers. ‘See this issue, i L b iict—Water supply scheme for U.D.C. 1 £43.000): D. Balfour A Son. 43. South Street. — — - — w l—October 24th. Durham Qiy. Burgr Council. Electrical work in connection whr the erecaon of 26 bouses at Manse Road: Rarrc.«-in-Fnniess_—Junior schooL Ormsgili John Mehin A Son. architects. Mar Street. estate, and extensions to Boys" Grammar ABoa School: borough engineer. I r e —January 28 th. Etecrridiy Sapplv Birkenhead. — Extensions to Municipal Board- Hydro-electnc generacr-g plant at Onhopadic Hospital: B. Robinson, boro ¿eh Cathaleen's Fall and Cliff stations on tbe River engineer. Town Hall. Erne. 'September 2Sth.i -School o f Art. Station Road. Ga*sborc«gfc.—October 29th. Electricirv Erdington: city architect. Depanmern One 500-kVA, 3-ohase static transformer. October 12thl Bohoa.—Works additions. Duckworth Street: National Utilities. Ltd. Hack»ey.—October 26th. EJecrriaiy Depart ment. Sir 500-kVA transformers- 'October 5th). BooByrigg.—Hc-ses 15). with electrical work; H. A. Brechin A Co_ quantity surveyors. 13. M ncteiff.—October 26«h Electricity Coro- Great King Street. Edinburgh. 3. aatee. VeotOatins plant for No. 2 boiler house. etc_ Smart Street generating staaon. Bradford.—N -tses" home. Grasangton Sana ' October 5th.) torium: city arehileci. Scctfaad-—November 6iit North of Scotland Brigbotse.—Factory extensions: Geo. Turner Hydro-Elecrric Board. 31-kV distribution hnes. A Sons. Ltd_ Owler Ings Milk Morar area. Inverness-shire. 'October 5th.i Doncaster.—Works extensions: Internationa] L—November 5 th. Etectriciiy Com- Harvester Co. of Great Britain. Ltd- Wbeailev. 20-MVA. 33 1 1-kV transformer. Doncasier. 'October nth. - Draytoa.—Houses (3G| for R.D.C.; Hind A Brown, architects. 22. Glebe Street. Stoke-on- Trent- Orders Placed Pon.—Houses ' 12 0 ). VV olverham BflAenbead. — Electririry Comminee. estate: T. Warrington A Sons, builders. 82. Accepted. 300-kVA outdoor type transformer Station Road- and i*o 500-kVA transformers-—Bryce Electric Construction C o . Felling Co. Durham .— Additions to factors for the International Paint A Composition _ Bradford.— EJectrrciiy Com minee. Accepted. Co_ Ltd.: L. J. Couves A Partners architects. Enetisior. of ash plan: system-—International Carliol House. Ne-castle-on-Tyne. j Itwlm lMi Co. 400-V svitckgear for No. 2 r ; — Br; ; tr.:ri: 5 ::r rear . • • Glasgow.—Houses '2.000) for Scottish Special ear for No. 5 generator and 6 -6 -kV feeder Housing Association: Corporation housin*» r — panel for Odsal substation-—A. ReyroBe A director. Co. PassettE" lift-—Fred Ellison A Co HnD.—Rebuilding Bankside Works: Blundell Emeraencv banerv-.—Chloride Electrical Sioraae Spence A Co_ Ltd. Co Jarrow.—Trading estate at East Jarrow; J. S Bory.—Electricity Committee. Accepted. W eir. borough engineer. SvtitchE23' for twelxe months.—G.EC. London. — Housing estates at Loushton Cardiff. — Electricm Committee Accepted. ■£4.S00.000i and Romford <£2>0 000i L C C Four 250-kV.A '£1.034): si\ 5©0-k\ A I £2.4361 architect. and four I TJOO-kV A transformers £2.808).— Workshops and laboratories: Borough Poly Bry ce Electric Construction Co technic. Southwark. 5 7 6 E l e c t r i c a l R e v ie w October 19, 1945 Macclesfield.—Works extensions; Barracks Lutterworth. — Works extensions; Wycliffe Printing Co., Ltd., Lower Heys Miil, Maccles Foundry Co. field. Manchester. — Prefabricated building for Four-bedroomed houses (34), London Street nurses’ home; L. C. Howitt, acting city architect. site; Macclesfield & District Association of Morley.—Houses (60), Fairfax estate, Drigh- Building Trade Employers, Union Bank lington; borough engineer. Chambers. Northumberland. —- Additional temporary Newcastle-on-Tyne. — Further facilities for accommodation at schools (£50,000); county classes in workshop technology (£ 1 2 ,000); architect, County Hall, Newcastle-on-Tyne. education architect, Northumberland Road, Portsmouth.—Reinstatement of nurses’ home, Newcastle. etc., at Royal Portsmouth Hospital; A. E. Offices for the Model Milk Co., Coutts Road; W. Riddle, 33, Jesmond Park West. Cogswell & Sons, architects, Prudential Buildings. Rochdale.—Memorial Sunday Schools; Rev. Rickmansworth.— H ouses (64), as first W. A. Edge, St. Clement’s Vicarage. development of 234 houses at Mill End site, Salford.—Rebuilding box and case works, for U.D.C.; Richardson, Son & Knowles, joinery department and saw mill; Mallinson & architects, 52, High Street. Eckersley, Ltd., timber importers, etc., Worsley Stalybridge. — Works additions, Bennett Street, Salford, 3. Street; Futura Rubber Products. Sunderland.—Houses (300); L. W. Evans, Wallsend.—Development of the Station Road 18, Norfolk Street. estate (2,000 houses); W. C. Leech, builder, Factory extensions for Northern Traders, Clayton Street, Newcastle-on-Tyne. L td .; J. Huntley & Sons, Marion Street. Factory extensions for King & Co.; W. & Westmorland.—County School, Milnthorpe; T. R. Milburn, 17, Fawcett Street. L. H. Crompton, county architect, Kendal. West Riding.—School, Hemsworth; A. Booth, Weston Favell.—Houses (450), Westone acting county architect, County Hall, Wake estate; Gilbert Cole, Ltd., builders, 14, Market field. Place, Northampton. Municipal Reports Ipswich increase of 3-3 million kWh. Income from the sale of electricity, including bulk supplies, was WfcURING March the fuel stock at Ipswich £393,160 (£359,381), equivalent to 1 086d. power station was reduced to 710 tons—less (1 068d.) per kWh sold, and total revenue from than a week’s supply. The chief engineer and all sources was £442,050 (£404,482). Working manager of the Electricity Department (Mr. expenses were £363,533 (£334,682) and there G. A. Vowles) mentions this in his annual was a gross profit of £78,517 (£69,800). Interest report. Surveying the difficult fuel situation charges were about the same as in the previous during the war years, he says that in order to year, but taxation and reserve for income tax economise coal both coke and sawdust have (for which there was no provision in 1943-44) been- used as fuels. The coal-handling plant required £8,241, and the net surplus for the year was modified to enable an intimate coal-coke was £11,486 (against £11,455). mixture to be obtained and a considerable quantity of coke, in varying proportion up to Cannock 22-5 per cent, of the mixed fuel, has been successfully consumed. Sawdust as fuel was The Cannock undertaking (engineer, Mr. P. introduced in August, 1942, and after some Wardle) reports an increase in sales from experiment two boilers were equipped to con 24-1 million kWh in 1943-44 to 25-1 million sume sawdust while also burning coal; in this last year. Income rose from £111,577 to way approximately 800 tons of coal had been £118,735 and working expenses from £76,084 saved up to March 31st last. to £89,737. After accelerating loan repayments In 1944-45 a total of 28-5 million kWh was and providing £3,000 for income tax there was a generated compared with 24-5 million kWh in net profit of £159 (£4,608). Revenue from the the previous year. It was necessary to shed sale of electricity averaged l-032d. (against load on five occasions, in each case at the 1016d.) per kWh sold.. breakfast-time peak between 8.25 and 10 a.m. In December, 1942, a 12,500-kV set broke down Winchester through blade failure, causing partial wrecking An increase from 1,562 to 1,752 kWh in of the machine; this set was brought back into sales per consumer is reported by the Winchester commission last January, resulting in an im Electricity Department (engineer, Mr. R. proved thermal efficiency. Ayton). Altogether 101 million kWh was sold Excluding bulk supplies of 181 million kWh in 1944-45 compared with 8-9 million in the to East Suffolk and Felixstowe, a total of 68-8 previous year. Total revenue was £90,039 million kWh was sold (against 66-4 million); (£81,826), working expenses amounted to power supplies decreased by 1-5 million kWh, £61.173 (£53,651) and there was a net surplus but under the combined tariff there was an of £6,164 (£5,076). October 19, 1945 E l e c t r ic a l R e v ie w 4 3 E S C A P E M E NEVER... There should be a pun somewhere here about nuts and bolts. But we shan't trouble to look for it. We want only to say — as if you didn't know it already!—that there are two ways of making sure that when a nut is screwed on to a bolt it stays put. One way is called Pinnacle and the other Simmonds. One uses aspring metal diaphragm, the other an elastic fibre collar. Pinnacle is best for some jobs, Simmonds for others. But the point is that both of them are what they claim to be — Stop - nuts. S I M M O N D S S T O P N U T S * Simmonds Ae rocessories Limited Great West Road • L o n d o n A Company o f the Simmonds Group 44 E l e c t r i c a l R e v ie w O ctober 19, 1945 ELECTRIC LAMPS E.L.M.A. LAiYU'b MADE IN POPE’S ELECTRIC LAMP CO.,LTD. 5 .EARNSHAW STREET.NEW OXFORD ST..LONDON,W.C.2 Telephone: TEMple Bar 6074. Telegrams: “ Duramentum, Westcent, London.” Branches holding stocks from which supplies can be obtained MANCHESTER : LEEDS : LEICESTER : 18 Pool St., M arket Street. 6 Park Square. 89 London Road. Tel. : Deansgate 5687. Tel. : Leeds 22119. Tel. : Leicester 59029. Grams : Grams : Grams : “ Pope's, Deansgate 5687.” ‘ Pope's, Leeds 22119. ’ “ Pope's, Leicester 59028.” BIRMINGHAM : 3 Grosvenor Chambers, BRISTOL: Broad St. Corner, Broad Street. 123 Victoria Street. Tel.: Midland 2580. Tel. : Bristol 23239. Grams : “ Pope's, Midland 2580, Birmingham." Grams : “ Pope's, Bristol 23239.” BELFAST (Managers : Campbell, Gardner & Co.) : 27 Franklin Street. Tel. : Belfast 25171. Grams : “ C am ergard, B elfast. " Liverpool Representative : Mr. B. Marks, 29 Lascelles Road, Liverpool 19. October 19, 1945 E l e c t r i c a l R e v ie w 45 • riSEMENTS for insertion in the following REPLIES TO advertisements published under a m OFFICIAL NOTICES, TENDERS, ETC. | BOROUGH OF HESTON AND ISLEW0RTH Electricity Department COUNTY B0R0U-GH OF BLACKPOOL Shift Charge Engineer Electricity Department APPLICATIONS are invited for the position of Shift ^PENDERS are Invited for tin* following works: Charge Engineer. Applicants must have a sound 1. To supply, lay, Joint and connect: theoretical knowledge and considerable practical experience Approx. 22.080 yds. 0.25 sq. in. I I type screened in the operation, running and maintenance of water tube 33*kV. 3-core cable. boilers, reciprocating and turbine D.C. and A.C.generating 31.440 ydw. 7/.029 L.T. twin and 3-core plant, E.H.T. and L.T. swltchgear, motor converters, pilot cable. rotary converters, rectifiers, 3-wire D.C. balancers, large 12,800 yds. 1 2 -pair, 2 0 -lb. dry core secondary batteries, booster charging equipment, etc. telephone cable. Applicants must be capable of carrying out running 8,700 ydw. 0.2sq.ln. 0,000-v. 3-con* cable. repairs, tests arid overhauls to all station plant. 4,000 yds. 0.1 HQ, in. 0.000-v. 3-core cable. The salary will be in accordance with Grade 8 , Class E, 2 . 'To supply and Instal at one substation : of the National Joint Board Schedule. The commencing An autom atic fire extinguishing system. salary at present is £389 1 Jh. per annum. 3. To supply and deliver to Hite : The appointment is subject to the Local Government 2 10.000-kVA. 33-kV/0.0-kV automatic on-ioad and Other Officers (Superannuation) Act, J937, and the ratio change transformers. successful candidate will be required to undergo a medical examination. Forms of tender and specification may be obtained by The person appointed will be required to carry out such recognised manufacturers from tin Borough Electrical duties as may be assigned to him, to devote his whole Engineer, Shannon Street, Blackpool, at whom* office plans time to the duties of his office, and to reside within the may be inspected. Tenders, in plain sealed envelopes, Borough. emlorsed Form of application may be obtained from Mr. S. H. '* Tenders for Underground Cables." Fowles, M.I.E.E., M.I.Mcch.Ei,, M.Inst.B.E., Borough '* Tenders for Fire Extinguishing Equipment," Electrical Engineer and Manager. Electricity Offices, 1 1 . Staines Road. Hounslow, Middlesex, and must be for “ Tenders for Transformers," warded. together with copies of not more than three recent must be delivered to the undersigned not later than noon testimonials, enclosed in a plain sealed envelope endorsed on 12th November. 1945. TREVOR T. JONES, " Charge Engineer." to me at the* Council House, not later than 12 noon on Saturday, 27th October, 1945. Town Hall. Town Clerk. Canvassing any member or officer of the Council, either Blackpool, Lancs. 3089 directly or indirectly, will be deemed a disqualification. The Ministry of Labour and National Service (Technical and Scientific Register) have given permission under the SITUATIONS VACANT Control of Engagement Order. 1945, for the advertisement None of the vacancies lor women advertised bn ihest of this vacancy. columns relates to a woman between. 18 and 40 unlenn Huch HAROLD SWANN. Council House, Town Clerk. woman la) han living with her a child of herh under the Hounslow. 3001 age o l 14. or lb) in registered under the Blind Per nonh Acts, or (c) has a Ministry <>1 Labour ;permit to allow her to obtain employment by individual effort. BO RO UGH OF M O R LEY Electricity Department GENERAL SALES MANAGER Appointment of Demonstrator and Showroom Attendant (Female) A ITLICATIONS are invited for the above appointment TOHNSON & PHILLIPS LTD. are prepared -£■*• at a salary in accordance with the Corporation'« Scale. •J to receive applications for the position of Grade I). £195-£15-£225, plus war bonus, which at present General Sales Manager (Home). is £48 5s. per annum. Candidates must have a good general education and hold a recognised diploma in Domestic Science, he competent Apply by letter only, giving particulars of age. to conduct lecture-demonstrations both in the showrooms education, qualifications, training, experience and on consumers’ premises, and to advise customers on and salary required, to General Manager, Charl the selection and use of electrical appliances. ton, London. S.H.7. The appointment is subject to the provisions of the 3077 Local Government Superannuation Act. 1937, and the successful candidate will he required to pass a medical .■„„„any lii tlw London urea rniuir.« a lliat-daaa examination. A» ' . rihnlf’fil Hiili'H Kriiii'ni'iitatlvo t„ wll fractional how Applications, stating age, qualifications and experience, l . r ; Ä In U.iK'‘ oio.try. sound k.mwlndan of ma. together with copies of recent testimonials, to he sent to ■Ib cHH.'id ¡al Tlio moduid i- a ini'clnlon liiHtrument of the undersigned not later than Friday, 9th November. 1945. hi 111«" .'hi auallty. Tin* p.witlon «UIh for drlvn, enemy W. II. METCALFE, ,1 X . , and orfern ronaldnmbln hcoi«'. Ayu between 35 Electricity Works, Engineer and Manager. , 40 Itepllew to Box 3088. c /o 1 he Electrical Review. Morley, Yorks. ^106 46 E l e c t r ic a l R e v ie w O ctober 19, 1945 COUNTY BOROUGH OF ST. HELENS BOROUGH OF BECKENHAM Electricity Department Electricity Department Appointment of Junior Mains Assistant Appointment of Charge Engineer A PPLICATIONS are invited for the position of Charge PPLICATIONS are invited for the above position with Engineer. Candidates should have experience m boiler A salary and conditions in accordance with Grade 9a. house control, operation of steam-raising plant and switch Class G. of the National Joint Board’s Schedule, at present board work. £307 per annum. The salary will be in accordance with the National Joint Candidates must be experienced in the operation of Board Schedule, at present Class D, Grade 8 . high and medium voltage A.C. distribution and D.C. The successful candidate will be required to pass a systems, and must possess theoretical qualifications at medical examination by the Medical Officer of Health or least equivalent to the Higher National Certificate in Elec an independent Medical Referee appointed by the Council, trical Engineering. . . and contribute to the Superannuation Scheme. The appointment will be subject to the provisions of the Applications must be made on the prescribed form, Local Government Superannuation Act. 1937. and the which is obtainable from the Borough Electrical Engineer successful candidate will be required to pass a medical and Manager at the Town Hall, Beckenham. The form, examination. when completed, to be enclosed in an endorsed envelope Applications, accompanied by copies of not more than and delivered a t th e Electrical Engineer’s Office not later three testimonials, must be made on the form obtainable than Tuesday. 30th October, 1945. from the address given below, and be received not later Canvassing in any form will disqualify. than 5th November, 1945, endorsed “ Junior Mains The Ministry of Labour and National Service have given A ssistant.” , . _ permission under the Control of Engagement Order, 1945, The Ministry of Labour and National Service (Technical for the advertisement of this vacancy. and Scientific Register) have given permission under the C. E R IC STADDON, Control of Engagement Order, 1945. for the advertisement Town Hall, Town Clerk. of this vacancy. Beckenham, Kent. P. BREGAZZI, A.M.I.E.E., 13th October, 1945. 3102 Electricity Works, Electrical Engineer and Manager. Carlton Street. St. Helens, Lancs. 3113 BOROUGH OF HARROGATE Appointment of Deputy Borough Electrical Engineer, CITY OF BRADFORD ELECTRICITY DEPT. Electricity Undertaking Substations Maintenance Engineer rpH E Council invite applications for the position of Deputy Borough Electrical Engineer of their under PPLICATIONS are invited by the City of Bradford taking from applicants who are Corporate Members of the A Electricity Department for the appointment of a Institution of Electrical Engineers and experienced in the Substations Maintenance Engineer. management and administration of an electricity under Candidates must have had a sound technical training taking. The salary for the position will be £723 per annum, and experience in the operation and maintenance of inclusive of cost of living adjustment. manually and automatically operated converting plant The appointment will be subject to the provisions of (both rotary and rectifier type), 6 .6-kV and 33-kV switch- the Local Government Superannuation Act. 1937, and to gear and transformers, with automatic voltage control. determination by the giving of three months’ notice in The salary and conditions will be in accordance with the writing on either side. The successful candidate will be N.J.B. Agreement, the present salary being £295 per annum required to pass a medical examination. (Class H. Grade 10). . Applications, on the forms provided, enclosed in 'an The selected candidate will be required to pass a medical envelope endorsed “ Deputy Borough Electrical Engineer,” examination and contribute to a Superannuation Scheme should be forwarded to the Borough Electrical Engineer. under the provisions of the Local Government Super Municipal Offices, Harrogate, and received, not later than annuation Act, 1937. Monday. 12th November. 1945. Applications, stating age and giving full particulars of Canvassing, either directly or indirectly, will be a dis training and experience, are to be endorsed “ Substations qualification. Maintenance Engineer.” and must reach the undersigned The Ministry of Labour and National Service have given not later than Tuesday, the 6th November, 1945. permission under the Control of Engagement Order, 1945, The Ministry of Labour and National Service (Technical for the advertisement of this vacancy. and Scientific Register) have given permission under the J . M. DODDS. Control of Engagement Order. 1945. for the advertisement Municipal Offices. H arrogate. Town Clerk. of this vacancy. 12th October. 1945. 3092 T. H. CARR. A.M.Inst.C.E.. M.I.Mech.E., M.I.E.E.. Electrical Engineer aand Manager. 27. Bolton Road. Bradford. BOROUGH OF DOVER October, 1945. 3094 Electricity Department COUNTY BOROUGH OF WALLASEY Junior Mains Assistant Electricity Department A PPLICATIONS are invited for the appointment of a Junior Mains Assistant. Candidates must have had a sound technioal training and experience in the operation Appointment of Assistant Station Superintendent of high voltage and medium voltage A.C. and D.C dis tribution systems. PPLICATIONS are invited by the 5th November for The salary and conditions will be in accordance with A the above appointment at a salary in accordance with the N.J.B. Schedule, the present salary being £283 per Class G. Grade 7. of the National Joint Board Schedule— annum. Class D. Grade D9. at present £445-£472 p.a. Applicants must be corporate The selected candidate will be required to pass a medical members of the Institution of Electrical Engineers, with examination and contribute to a Superannuation Scheme sound practical experience in the operation and main under the provisions of the Local Government Super tenance of high pressure plant in a modern power station. annuation Act. 1937. A form of application and further particulars will be Applications, stating age. and giving full particulars of supplied by the Electrical Engineer and Manager. Wallasey training and experience, are to be endorsed “ Junior Mains Road. Wallasey, on receipt of a stamped and addressed Assistant.” and must reach the undersigned not later than foolscap envelope. , XT , o • ,rr i , Wednesday, 31st October. 1945. The Ministry of Labour and National Service (Technical This advertisement is published by permission of the and Scientific Register) have given permission under the Ministry of Labour and National Service (Technical and Control of Engagement Order. 1945. for the advertisement Scientific Register) under the Control of Engagement Order. 1945. of this vacancy. e m r y s EVANS. R. G. WIDGERY. A.M.I.E.E.. A.I.E.E., 10th October. 1945. Town Clerk. Engineer and Manager. Ladwell. Dover. 3 ^ 3 r m s October 19, 1945 E l e c t r ic a l R e v ie w 47 BOROUGH OF STAFFORD EPARTMENTAL Manager required by company. D West Country area, to take charge of large-scale Electricity Department Loud Speaker production. Applicants must have exten sive experience in similar capacity. Write details of qualifications, past experience, etc. to Box 3115, c/o The Appointment of Senior Mains Assistant a»« IV Electrical Review. aesw ~P\OMESTIC electrical appliances. North London manu- “ Kim, A RELIC A1IONS are invited for the above appointment facturers require Manager capable of control. Must Îr" S ^ saiary in accordance with the N.J.B. Schedule. have first-class technical and practical knowledge from Cla55 F. Grade 8 b. commencing at £346 per annum. design to production. Good opening for fully experienced Applicants must have had a sound technical training man. Write fullest particulars in confidence.—Box 2943. Ï5d£s and practical experience in the laying, maintenance and c/o The Electrical Review. BUfc. operation of E.H.T. and L.T. underground cable systems, T^LECTRIC Traction Engineers (two) required by British itîriS; including the erection and maintenance of substation company in Far East. Practical experience in over «et equipment. head equipment, mains and trackwork essential. Substation The appointment will be subject to the provisions of experience would be additional qualification. One required the Local Government Superannuation Act. 1937, and the as Assistant Engineer at equivalent of £700 p.a., the other selected candidate will be required to pass a medical as Junior Assistant Engineer at £500 p.a., both receiving examination. house allowance in addition. Write, stating age. training, Applications, endorsed “ Senior Mains Assistant," stating qualifications and experience, to—"P . A.." c/o Streets. age, training, qualifications and full details of experience, 110, Old Broad Street. E.C.2. 3072 and accompanied by copies of not more than three testi monials. should be forwarded to the Borough Electrical X^LECTKICAL Designer for small rotating and static Engineer and Manager. Electricity Department. Gaolgate. electrical machines and apparatus, motors, generators, Stafford, to reach him not later than Saturday. 27th alternators, etc., A.C. and D.C.. mainly of a special nature. October. 1945. Over 51 or Class A ex-Serviceman. Salary about £600. SüDiR The Ministry of Labour and National Service (Technical according to qualifications. London area.—Box 3003, c/o fob and Scientific Register) have given permission under the The Electrical Review. Control of Engagement Order, 1945, for the advertisement ELECTRICAL Engineer required for large industrial con- of this vacancy. cern in London. Applicants, who should be between T. BROUGHTON NOWELL. 35 and 40 years of age and of good personality, should be Borough Hall, Town Clerk. fully qualified and preferably corporate members of the im . Stafford. 3063 Institution of Electrical Engineers. Applicants should have had first-class practical experience in the operation and Bcts'jje maintenance of A.C. and D.C. generating plants, factory Company manufacturing wide range electric heating distribution systems, motors and automatic control gear, A equipment (industrial, commercial, etc.) have lifts, etc., and would be required to manage a staff of hSjES several vacancies for Class A ex-Servicemen (or other electricians. Duties would also include the preparation of psiææ wise exempt from M.O.L. control) with suitable specifications, the ordering of equipment and material, and ce feer. experience for the following: (a) Storekeeper: (b) its installation in a large factory plant. Salary £600-£800. Charge-hand Electrical-Fitter for special plant section: depending upon qualifications. Applications should give KS^aEli (c) Foreman for small appliance section, all round full particulars of education, technical training, experience £ f e d SZ experience and initiative essential; (d) Assistants and positions held. Write—Box 3033, c/o The Electrical ikcapH for electrical testing, repairs and development; (e) Turner- Review. ÎBBJP3Ï machinist (centre lathe, shaping, milling, etc.); (f) P LECTRICIAN required immediately by Electrical Fitters, preferably with experience of angle-iron and Contractors, London, permanency to suitable man. .: i* :•: i sheet metal construction; (g) Electrical-fltters. preferably Class “ A " ex-Serviceman or man over 51. Apply, giving * 3S: B2. used to control panel and equipment wiring, etc. full particulars, to—Box 2945, c/o The Electrical Review. Positions offer good opportunities for keen reliable men ELECTRICIAN - Wireraen for installation and main- in progressive concern. District, N.W London. Details tenance work. Class A ex-Servicemen or otherwise TH. * » « of experience, etc. to—Box 3107. c/o The Electrical 1 :T - Lz- exempt from Ministry of Labour control.—C. F. Parkinson. Review. Electrical Contractor, 114, W est St., Boston. Lincs. 7763 ilczniizz. A PPLICATIONS invited from men becoming available L 1 LECTRICIANS accustomed to industrial installations, for civilian work on Class A demobilisation, for screwed conduit work, etc., also Electricians for plant positions as experienced practical Model makers, in the maintenance. Class A ex-Servicemen or otherwise exempt Instrument Department of a large electrical manufacturer M.O.L. control. Permanencies for suitable men.—Service nvrrc-y-r in the Midlands. Only men with previous experience Electric Co. Ltd., Abbey Mfg. Estate. Alperton. Tele in this class of work need apply. Applicants should state phone. Wembley 0194. 48 5z»h : fcfe >- age and previous employer, with details of work in each case, to—Box 2980. c /o The Electrical Review. ELECTRICIANS and Assistants required for London and A RMATURE Winders, experienced all classes A.C. and Provinces. Class A ex-Servicemen or over 51.—Geo. D.C. jobs. Class A ex-Servicemen or otherwise E. Taylor & Co. (London) Ltd., 36, Denmark Avenue. exempt M.O.L. control. Permanencies for suitable men. Wimbledon. S.W.19. Wim. 5021. 3062 —Service Electric Co. Ltd.. Abbey Mfg. Estate, Alperton. ELECTRICIANS and Assistants required for London Telephone. Wembley 0194. 49 housing programme. Best conditions, permanency JVEB A RMATURE Winders, experienced in A.C. and D.C. for right men. Class " A “ ex-Servicemen, or otherwise work. Permanent jobs for suitable men with firm free.—Box 44, c/o The Electrical Review. ■fft having good post-war future. Class A ex-Servicemen or U L E C 1R IC IA N S and Assistants wanted. Class A ex- otherwise exempt Ministry of Labour control.—Southern & Servicemen or over 51. Permanency to right men.— sir: Redfern Ltd.. Woodhead Road. Bradford. 3066 J. H. P lant L td., 99, St. M artin’s Lane. Charing Cross. A SSISTANT-cum-Traveller required. To assist small W.C.2. 7798 rt ; ^ L firm rapidly expanding. Electrical Accessories. Good prospects to reliable man. Able to drive car. "ELECTRICIA N S, Class A ex-Servicemen or over 51, SSS^I^ East London. Class A ex-Serviceman. or otherwise free. -■-* required by electrical contractors, near City. Perma ßi£ ÊÉÜÎ6 Apply in first instance to—Box 3047, c/o The Electrical nency to right men. Best conditions.—Box 3084, c/o The Review. Electrical Review. - - jarjff51 A SSISTANT, male (Class A ex-Serviceman or over 51) ELECTRICIANS wanted immediately. A priority work. or female for retail electrical shop in London, must -L ' Class A ex-Servicemen or men otherwise free. Appli be willing and reliable, state experience and wages cations from demobilised pre-war employees especially expected. Reply—Box 73, c/o The Electrical Review. appreciated. Apply—Holliday Hall & Stinson Limited. /^ABLE Maker requires first-class Head Foreman, age 36. Victoria Street, Westminster, S.W.l. 77 32 ^ 30-45, with good general experience T.R.S. synthetic E NGIXEERS and Draughtsmen, becoming available for braided cables, good organiser, able to handle labour. civil employment, under Class A demobilisation, are Good opportunity for advancement right man. Apply, invited to apply for positions in the Switchgear Depart giving full particulars.—Aerialite L td., Stalybridge. 3071 ment of a large electrical engineering manufacturer in the pAPABLE Manager to take charge of and develop elec- Midlands. Applications stating age, appropriate technical ^ trical dept, of soundly established London retail qualifications and industrial experience, and salary business. State age and full details of experience.—Box required, to—Box 69, c/o The Electrical Review. 7799. c /o The Electrical Review. EXPANDING Company requires experienced Female /CLERICAL Assistant. Class A ex-Serviceman. for ^ Book-keeper. Shorthand-Typist with a view to ^ Stores Office. Must have thorough knowledge of all taking over complete control of office. Reply stating age electrical material. Apply London Electrical Company. experience and salary required to—Visolite Ltd., 98/98a# 92, Blackfriars Road, S.E.l. 24 Soho Road. Handsworth, Birmingham, 21. 3 10 5 4 8 E l e c t r ic a l R e v ie w O ctober 19. 1945 T^XPERIEXCED Armature and Stator Winders, good A f EDIUM size firm specialising in variety of special small L^ opportunity for right men. over 51 or from Class A electric, motors require Production Engineer, over ai ex-Servicemen only. Write, giving details of past experi or Class A ex-Serviceman, for batching up work anaissuing ence. to—Vickalectric Engineering Co.. 503. Wals grave shop orders and general progress planning. Full j^rticuiars R oad. Coventry. ”804 of age. qualifications and experience to—Box c/o T^XPERLENCED Estimator required for industrial instal- The Electrical Review. L ^ lation work in the Midlands. Class A release or over T> EPRESENTATTVES required by firm of Scientific and 5 1 .—The Midland Electric Installation Co. Ltd.. Cyprus LV Electrical Instrument manufacturéis to cover London Works. Upper Villiers Street. Wolverhampton. 3005 area. Remuneration by commission and expenses. Apply t r . M of electrical engineers and contractors shortly in writing, giving full details, to— Box 3080. c/o The F opening business in the South Scottish area invite Electrical Review. applications from Electricians and Wire-men experienced T> EQUIRED. Two Junior Electrical Draughtsmen, trans- in the highest grade domestic and industrial installations. L V former experience essential, permanent position, good Permanent positions with good prospects and conditions post-war prospects. Applications from Class A ex-Service are offered to suitable applicants over 51 years of age or men only.—Box 3087. c/o The Electrical Review. Class A ex-Servicemen. Men expecting release from the KILLED Draughtsmen required by transformer manu Services in the near future are particularly invited to S facturers in London. Preference will be given to an apply. All applications will be considered and applicant who has had experience of transformer design, acknowledged. Reply giving full particulars of age, but applications from draughtsmen skilled in other branches training and experience, and when disengaged, to—Box of electrical industry will receive full consideration. Five- 144. Phillips Advertising L td ., 15. W ilton Road. London. day week. Association rates offered. Class A ex-Service S.W.l. 2986 men and others exempt from M.O.L. control only.—Box OREMAN Armature W inder, experienced all sixes 3069. c/o The Electrical Review. L A.C. and D.C. motors. Class A ex-Serviceman. or otherwise exempt Ministry controL Good wages, small SUPERVISING Electrical Engineer required to take Nottingham firm. State full particulars of training and ►J charge of department, having good experience of elec experience, age.—Box 3111. c/o The Electrical Review. trical sub-contract work, designing all kinds of electric lighting and power installations, taking off quantities and OREMAN-Electroplater, to take charge of small plant estimating. Position is one of responsibility with plenty L working chiefly nickel, with barrelling, rumbling and of scope and prospects of advancement for the right man. polishing, in Felixstowe. Applicants must have sound \ Apply, giving full details in writing, to—Matthew Hall & knowledge and experience of the trade, and a good oppor Co. Ltd.. 26/28. Dorset Square. N.W.l. 3079 tunity is provided. State age. experience and rate expected. Applicants must be free from restrictions of the Control of QWITCHGEAE Sales Representative required for South Engagement Order.—Box'3021. c/o The Electrical Review. ^ Wales and West of England. Sound electrical engi EAD Foreman for Coil Winding Department required neering technical training necessary. Apply, stating full H by company engaged in large-scale manufacture of , details of experience and salary required, to—Box 2964. light to medium electrical products. West Country area. c/o The Electrical Review. Applicants must have extensive experience similar rpEST Room Assistants (Male), age over 51 or Class A capacity with firms of repute. Write full details of , L ex-Servicemen. with experience on moving coil instru qualifications, past experience, to—Box 3114. c/o The ; ments. preferably Pyrometers. London district. State age. Electrical Review. experience and rate required. Replies to—Box 3042. c/o T ADY required to take charge of Electrical Contractors’ The Electrical Review. -Li Showroom (London). Apply, giving full particulars, rPESTING Engineer required for large modern factory in to—Box 2946, c/o The Electrical Review. L North of England to take complete charge of depart T ONDON electrical power engineers have vacancies for ment testing A.C. induction motors up to 250 h.p.. and all L i Armature Winders, also Electrical Fitters, experienced i associated plant. Age 30-40. Must have sound technical in assembly of A.C. and D.C. motors. 1 to 50 h.p. Class A training and experience, be strict disciplinarian, and,be ex-Servicemen only. Good conditions of employment. capable of dealing with inspection tests for Government Letters only giving details of experience to—The Managing 1 departments, etc. Apply, stating age. experience and salary Director. Industrial Electrical Co. Ltd.. Offord Street , required, to—Box 3065. c/o The Electrical Review. Works. London, N.I. 3073 J ATACANCIES are available for men released in Class A TANAGER for electrical department of an established * who have had experience on Instrument Work. Pre -1VL business. Must have good credentials and experience, ference will be given to those who possess some theoretical be able to estimate, take complete control and obtain the knowledge. Apply, stating experience, training, age and business. Good opening for progressive man. Write, wages required, to—Cambridge Instrument Company Ltd.. stating age, experience and salary required, to—Box 3775- i Sydney Road. Muswell Hill. N.10. 46 Frost-Smith Advg.. 64. Finsbury Pavement. E.C.2. 2993 j A AT ANTED an experienced Toolmaker-Designer for ANAGER required for Winding Dept, of electrical ’ ’ Bakelite Moulds. Applications from those over 51 M engineering co. in East London. Applicants must or Class A ex-Servicemen only. Write in first instance to be good organisers with thorough practical winding ex —Box 3057. c/o The Electrical Review. perience of all sizes A.C. and D.C. motors, and be used to \\/TREM A N for general factory work. Only those who controlling and training mixed labour. Applicants should ’ t have knowledge of A.C. and D.C. motors and state concise particulars of training and subsequent experi- 1 wiring need apply. Permanent and progressive job to ence. age, and salary required. — Box 2965. c/o The good reliable man. Applications from Class A ex-Service Electrical Review. men or those over 51.—Cox & Danks Ltd.. Plant & ANAGER required to take charge of technical Machinery Dept.. Faggs Road. Feltham. Mdx. 3059 M development and research in the design and produc VyORKING Director. London firm of electrical con- tion of small electric motors. Please send full details of * * tractors, established reputation, large Government experience and salary required.—Box 3099. c/o The i contracts recently completed, organisation ready for post Electrical Review. war contracts, requires qualified Working Director. Ex " I f ANUFACTURER of electrical transformers in London cellent opportunity for energetic and capable man.—Box —*L has vacancies for men with some electrical knowledge 3081. c/o The Electrical Review. in the Winding and Assembly Departments. The company , A l'rORKS Manager. Small factory (50). rapidly growing. is prepared to give the specialised training necessary to * ’ producing domestic electric equipment, fires, irons, approved applicants, with a view to permanent employ kettles, water heaters, etc.. requires Works Manager with ment at good rates of pay. Semi-skilled rates would be practical experience of machine shop, press shop, tool paid initially, to be increased to full-skilled rates immedi room and spinning shop processes. Wifi act as own buyer ately it is clear that the applicant will become a satisfac initially and operate a costing system. Works are being tory tradesman. Five-day week of 47 hours with occasional extended, and must be qualified to put down plant for overtime. Applications from Class A ex-Servicemen and producing electric kettle bodies in aluminium and copper. others exempt from M.O.L. control only.—Box 3068. c/o Must be a friendly but strict disciplinarian. Works situated The Electrical Review. in East Coast seaside town. A generous salary and pros VERHEAD Linesman / Electrician for electricity pects offered to assist and work directly under managing director. State in time order past experience, present O undertaking. Wages and conditions of employment occupation, salary eroected and age.—Box 2993. c/o The in accordance with Schedule of West of England No. 6 . Electrical Review. N J I C Rate of wages at present 23.13d. (Linesman's rate) or 25d. (Electrician's rate) per hour for a 47-hour V O U T H with some knowledge of electrical goods required week £4 10s. 8d. or £4 17s. lid . Applications to the— L as Warehouse Assistant, good prospects. Apply— Ministry of Labour and National Service. 1-2. Kingsbury Mr. Fisher. Farmer. Stedall & Co.. 145. St. John Street Street. Marlborough. 3 1 1 2 Clerkenwell. E .C .l. 3038 October 19, 1945 E l e c t r ic a l R e v ie w 49 XECUTIVE. 20 years’ experience in telephone industry, if, appointments f i l l e d E office and shops control, seeks post as Manager, «liai Î?.S5 Î 3 ÎS^ r ^mg ^en so often expressed that uu- technical or lion-technical. or similar executive position in aPPlieants are left in ignorance of the fact that London area. Age 40. Salary approx. £450. Box 7831. a n c applied for has been fllled. may we suggest c/o The Electrical Review. that Advertisers notify us to that effect when they have IRST-class Electrician requires position which entails arrived at a decision? We will then insert a notice free F experience, trust and responsibility. Age 34.—Box of charge under this heading. 7801. c/o The Electrical Review. ««It* T>OX 2402 — Electrical Plant Engineer; Box 2401 — ^ te RADUATE I.E.E., wide technical and representative Mechanical Plant Engineer: Mersey Power Co. L t d . - G experience, desires progressive post, preferably on Technical Assistant and Assistant Switchboard Attendant. export work. Knowledge of French and Spanish.—Box Applicants are thanked. 7813. c /o The Electrical Review. IGHLY-trained Secretary seeks permanent post-war SITUATIONS WANTED H position. Experienced minuting of meetings. Trade A DVERTISER desires post as Manager or Supervisor Association work, full statistical knowledge and general to electrical contractor or installation engineer, or as confidential secretarial work.—Box 7794, c/o The Electrical Works Engineer on maintenance. Over 40 years* experi Review. ence in lighting and power installation work, with 20 years "VT.Sc. Honours degree electrical engineering. 16 years’ in business on own account ; last 4 years in Air Ministry experience, generators, motors, electrical instru employ at R .A .F. stations.—Box 7818. c /o The Electrical ments and electronics, own patents, wants to change Review. position.—Box 7791. c/o The Electrical Review. A DVERTISER (40). seeks situation as Mains Assistant VTANAGER. methods and design, A.M.I.P.E., age 36. or Foreman. 19 years’ experience of corporation and wide experience high grade electro-mechanical appa contracting work ; past 3 years full control supervising ratus, telephone. radar, etc.. tactful administrator and complete installation of L.V. and H.V. distribution, up to disciplinarian, good organiser, proven production engineer, 11 kV on R.A.F. stations. Further details supplied.— mass production, tools, presswork. etc.. seeks progressive Box 7822. c /o The Electrical Review. senior post. Available November.—Box 7761. c/o The DVERTISER (53). offers very wide experience all Electrical Review. A branches. Sales Office Administration. Flame and V TETER Engineering Advertiser (32). first-class experi- Export. Efficient and economical controller. Details, ence D.C., single and polyphase meters, instrument salary, etc.—Box 7820, c/o The Electrical Review. and clockwork, with manufacturer and supply authority. A .M.I.E.E.. Int.A.M.l.P.E. (30) desires position as M .A.S.E.E.—Box 7824. c /o The Electrical Review. assistant works manager in progressive electrical PTICAL and Electrical Foreman Instrument Maker, company. Design. D.O., estimating, workshop and O age 35, seeks progressive situation in South Africa. 3i«caa executive experience. Remuneration £600 p.a.—Box 7749. Excellent refs. Release obtainable.—'Box 7832, c /o The tei. suai c/o The Electrical Review. Electrical Review. .Sc.. age 38. designer of transformers, motors, relays, T>OST-war. Advertiser desires change, wishes represent B rheostats, free.—Box 7S30. c/o The Electrical manufacturers producing good class Electrical Water Review. Heating Apparatus, etc. All-round knowledge technical TÀISTRIBUTION Engineer (37). A.M.I.E.E.. B.Sc.(Eng.). and commercial, extensive connection, guarantee business. -a-' seeks post with company developing rural area. Ex Midlands preferred.—Box 7730, c/o The Electrical Review. perienced 33-kV. 11-kV and 400-volt overhead and under "PROGRESSIVE young man with 14 years’ experience in ground systems. Reasonable salary. Own car.—Box 7807. -a- the vacuum industry requires position as Manager or c/o Tne Electrical Review. Assistant Manager in large neon sign company on salary, RAUGHTSMAN-Designer. age 33. exp. small mech. plus 1.000-ft. run bonus, basis. Expert knowledge of glass D and elect, components, works app. and 10 years D.O.. working, pumping and neon installations. Able to install desires position with reputable firm. London area.—- and equip complete neon sign factory and control all B. H. D.. 18. Kempsford Gardens. S.W.5. 7811 processes to make neon tubes. Alternatively would con RAUGHTSMAN, with 10 years’ experience in sider working partnership with small electrical concern, very D design and production of domestic and industrial limited capital.—Box 7768. c/o The Electrical Review. cooking and heating equipment, seeks position with firm ESPONSIBLE executive position required, offering interested in the development of above apparatus.—Box R attractive prospects. Present Sales Manager (30), tkssdaii: 7792, c/o The Electrical Review. with good connections and wide experience of sales, pro mas Wat h "C'LECTRICAL and Mechanical Engineer. M.A.S.E.E. duction. staff control and administration. Midland area Age 34. 17 years’ experience. At present Station preferred. Please indicate salary and position in full.— Engineer. Air Ministry. Desires to settle in any one Box 7723. c /o The Electrical Review. location seeks position with Works. Corporation or Supply EPRESENTATIVE (Wholesalers’), solid connection Co. Mains or Assistant Engineer; similar. Manager of R S.W. London. East Surrey, seeks change. Could Works.—Box 7750. c/o The Electrical Review. treble present turnover with right backing. Commission T^LECTRICAL Designer of rotating electrical machinery. basis, would open branch if necessary and drive light van. 25 years’ experience, requires responsible position Exceptional opportunity to wholesalers desiring new with reputable firm. Salary £1.000 approx.—Box 7808. accounts.—Box 7800. c/o The Electrical Review. c/o The Electrical Review. EPRESENTATIVE (48), With London wholesaler, L. IflffB»'* LECT. Eng.. Class A release, med. cat. Al. age 40. R desires change. Would consider taking financial D.C at® a E 22 yrs.’ experience all branches, estimating, three- interest in small wholesale business.—Box 7823, c /o The JBPSàR.î*'* phase overhead and underground distribution, etc.. requires Electrical Review. (3* A aj» suitable position.—Box 7797. c/o The Electrical Review. OUND Engineer. American and English reproducing te LaL. !l*j T^LECTRICAL Engineer (33), with National Certificate S systems. Disc. tape, film (non-photo) recording. and a wide experience in maintenance and installation P.A.. Design. Construction. Installations. Desires change work, seeks a position of responsibility.—Box 7725, c/o where above experience can be used.—Box 7828, c/o The The Electrical Review. Electrical Review. T^LECTRICAL Engineer (35). B.Sc. (Hon.). A.M.I.E.E.. OTAFF Foreman and Supervisor (43). able to control Biairfe? release October, desires permanent progressive post ^ labour and execute large contracts, drawings, im Direux J with consultants or contractors dealing with power instal wages, etc., desires change. At present and for number «****'* lations and electrical equipment buildings. Wide practical of years staff foreman for well-known electrical con and commercial experience.—Box 7788, c/o The Electrical tractors. Would consider practical assistant to con v.S©«^ Review. sultant.—Box 7753. c/o The Electrical Review. LECTRICIAN, disengaged, all-round exp.. able to inter SUPERVISOR Foreman (38). with technical and E view and supervise if required, free of national service. ^ practical knowledge of distribution, construction and —Electrician, la, Sheldon Road. Chippenham. Wilts. 7796 maintenance, requires position in Southern area. Genuine. NGINEER. A.M.I.E.E., skilled in installation and Box 7816. c/o The Electrical Review. Wafc^'® E maintenance transmitting receiving gear, good rriECHNICAL Sales Engineer (39) desires appointment njibn^i general knowledge office routine, desires change.—Box J- with manufacturer. London and Southern area: 20 7790. c /o The Electrical Review. years’ experience motors, control gear and switchgear. iT W ctv^f "IT'NGINEER (Mechanical), age 37. seeks post in South. P ast 6 years in charge London office.—Box 7814. c /o The k a&y ^ 18 years’ experience on design-development of Electrical Review. :nndat&_ electro-mechanical apparatus, including television and rpECHNICAL Sales Engineer (40). A.I.E.E.. and Central radio equipment. Present salary £500. Box 7745, c/o -a- Register, desires appointment with manufacturer. 2991d The Electrical Review. Over 15 years’ experience L.T. power distribution equip XT'XPORT Manager. A.M.I.E.E. (38). good education. ment. industrial lighting and heating schemes. Established -a-* works training, wide experience, requires position connection wide area Midlands public utility undertakings i f - S with progressive firm. — Box 7668. c /o The Electrical and important industrial concerns. Own car and tele fWI Review. phone.—Box 7744. c /o The Electrical Review. 5 0 R e v ie w O ctober 19, 1945 YIT'AYLEAVE Officer, now free (47;, active, 12 years’ NOW AVAILABLE FROM STOCK * ’ experience. Familiar with statutory procedure, having supervised some seven hundred miles of overhead and Self-contained underground cable construction, wayleave acquisition and records. Experienced in engineering requirements for over PETROL LIGHTING SETS head line work, access routes, crop damage, timber valua tions and fencing. Preparation and presentation of cases from 1-3 k\V. D.C.*and A.C.. all voltages. for inquiry and arbitration. Trained surveyor, estate agent and property valuer.—Box 7795. c/o The Electrical Review. ILLING to travel. Particularly interested in South Details and Illustrations W America. Electrical Maintenance and Installation Engineer, age 27, secondary education, London apprentice from ship. 1 1 years' experience Diesel alternators, distribution, etc. Due for “ A ” release, February, 1946.—Box <<89, c/o The Electrical Review. T H E ELECTROPLANT CO. OUNG Electrical Engineer (24). student apprentice Y ship. 7 years’ experience installations and swi tch gear (Suppliers of G-Power Units), manufacture. Matriculation. Ordinary and Higher National WEMBLEY. MDX. (WEMbley 3691). Certs., desires interesting post, London area.—Box 7787, c/o The Electrical Review. Agents for the French Empire: F O R S A L E Anglo-French Distributors Ltd.. 17. Half Moon Street. Traders buying and selling hereunder must observe the London. W .l. Restriction of Resale Order. S. R. & O. 1942 No. 958. ______3119 ELECTRIC MOTORS AND DYNAMOS G E O R G E CO HEN, SONS & CO. LTD. \X TE hold one of the largest stocks of New and Second- for ' * hand Motors. Secondhand machines are thoroughly overhauled. Inspection and tests can be made at our GUARANTEED ELECTRICAL Works. PLANT. For Sale or Hire. Send your enquiries to:— MOTORS. GENERATORS. BRITANNIA MANUFACTURING CO. LTD.. SWITCHGEAR. 22-26. BRITANNIA WALK. CITY ROAD. LONDON. N.I. etc. Telephone: 5512-3 ClerkenwelL 13 WOOD LANE. LONDON. W.12. TOOL ROOM CAPACITY Telephone: Shepherds Bush 2070 S THIS YOUR PROBLEM? IF SO, WHY NOT and I PASS IT OVER TO US? We are Specialists ST ANNIN GLEY. NEAR LEEDS. and can give you reasonable delivery of PRESS Telephone: Pudsey 2241. TOOLS, MOULDS. JIGS. Established 1834. UNIVERSAL TOOLS LTD.. 27 TRAMWAY PATH MITCHAM. SURREY. MITcham 1624. REBUILT MOTORS AND GENERATORS 7766 V A R IA B L E S P E E D D.C. MOTORS ONG deliveries can often be avoided by purchasing 460 volts. Pipe Ventilated L rebuilt secondhand plant. We can redesign or replace surplus plant of any size. 30 h.p. 700/1.000 revs. L.D.M. 23 h.p. 830/1.200 .. SEND US YOUR ENQUIRIES. 1 0 h.p. 600/1.000 .. 4-7* h.p. 900/1.200 .. OVER 1.000 RATINGS ACTUALLY IN STOCK HERE. All complete with Floor Mounting Brookhirst Starting and Regulating Pillars. DYNAMO & MOTOR REPAIRS LTD., Wembley Park, Middlesex. GREENHALGH BROS., Burtons Field Mill. Atherton, nr. Manchester. 37 Telephone: Wembley 3121 (4 lines). Also at Phoenix Works, Belgrave Terrace, Soho Road, COPPER WIRE FOR SALE Handsworth, Birmingham. Telephone: Northern 0898. 28 s.w.g., single silk covered, on reels approx. 31b. at 6s. lb. 26 30 s.w.g., single silk covered, on reels approx. 31b. at 6s. lb. 32 s.w.g.. single silk covered, on reels approx. 31b. at 6s. lb. Also Strip Copper /LOO Dumbarton T.P. I" Busbars, open type. Size . 1 x .085 D.C.C.. on 1 cwt. drum s, a t 1s. 3d. per lb. I j'iU U in 12 ft. lengths. Each length with 2-30-amp. Size .1 x .15 D.C.C.. on 1 cwt. drums, at 1s. 3d. per lb. T.P. Fuse Boxes. HURST ELECTRICAL INDUSTRIES LIMITED, 1 10 0 -kW Steam Generating Set. Beiliss & Morcom/E.C.C.. 75a, Well St.. London. E.9. Telephone, AMHerst 4166. 475 r.p.m.. 160 lbs. per sq. inch, 230 volts D.C.. direct ______3001 coupled on bedplate. 1 75-kW similar set except generator Willans fie Robinson. 380 r.p.m . B U R D E T T E & CO. LTD. 1 35-kW Motor Generator Set. 400 volt. 3-phase/220 volt D.C.. 960 r.p.m.. direct coupled. Stock A quantity of Bill Switchgear H.R.C. Fuse Switch Reconditioned A.C. and D.C.. Motors and Starters Equal Panels with Switches from 100 to 300 amps. to New. THE MIDLAND ELECTRICAL INSTALLATION STONHOUSE STREET. CLAP HAM. S.W.4. CO. LTD. Cyprus Works. Upper Villiers Street. Wolverhampton. Day and night service. MACaulay 4 5 5 5 . 17 October 19, 1945 E l e c t r ic a l R e v ie w 51 WATER TUBE BOILERS IN STOCK ROMPTON Tong Tests. I Set Type A. ranges 0/150, C 0/200 amps: 1 set Type A, Mumetal Core 0/40. ■ iw Sf-SSS }!»• evaporation. 270 lbs. W .l’. 0/75. 0/100 amps. Each equipment in black leather , ,wo 25.000 lbs. ,. 250 lbs carrying case in perfect condition. £17 lot. First TV™ 25,000 lbs. „ 175 bs! cheque secures. D. Clare. A.M.I.E.E.. 12 Kerries Road. Ihree 20,000 lbs. 17 5 lbs Glasgow, S .l. 3104 iwo 16.000 lbs. iso lbs . C. Coward, 110/144, Newfoundland Road, Bristol. 2. One 12 .0 0 0 lbs. 200 lbs‘ D offers the following equipment: One Motor Generator One 9/10.000 lbs. " 200 lbs! Set. Brooks manufacture, comprising 74-h.p., 365-volts, 3-phase, 50-cycles, 1,440-r.p.m. motor coupled to 70-volt, inc'uding brickwork. Economisers. 70-amp. generator: One Crude Oil Generating Set by Itnck i ll g Vnlyes. Generating Sets and Motors in sioca. riease send us your enquiries: we can give Vickers Petters, 42/60 h.p., directly coupled to a 28/36- kW. 220-volt shunt wound Compton generator: One Crude immediate delivery. Oil Engine, by Blackstone. 22 h.p., 600 r.p.m., complete with fuel tank and cooling tanks, suitable for belt drive: BURFORD, TAYLOR & CO. LTD., Newton 174-kW Generator, 220 volts, 80 amps., 540 m Specialists. Middlesbrough. r.p.m.. shunt wound, complete with switchboard and Telephone: Middlesbrough 2622. regulators. 3086 32 TAIES'EL-driven Alternating Set. Generator by Cromp- ton Parkinson, 14 kVA, 240 volts, single-phase, ELECTRIC MOTORS FOR SALE enclosed screen-protected, ball bearings, 1,000 r.p.m., with exciter: coupled to a 3-cylinder enclosed upright Diesel A large quantity of the following Motors for Engine by Ruston & Hornsby. The whole built on cast- immediate disposal. iron base, complete with daily fuel tank and silencer and 4 h.p. 3-phase 400 volts 1,460 r.p.m. expansion chamber, starting handle with switchboard. 4 h.p. 3-phase 400 volts 1,460 r.p.m. In new .condition.—Thos. W. Ward Ltd., Brettenham 4 h.p. 3-phase 400 volts 950 r.p.m. Hduse, Lancaster Place, London, W.C.2. Telephone No. 1 h.p. # 3-phase 400 volts 1,460 r.p.m. Temple Bar 9631. 3060 14 h.p. 3-phase 400 volts 1,460 r.p.m . "CHRE Spirals. 220/230 volts. 600 watts, 9s. 6d. doz.; 750 .2 h.p. 3-phase 400 volts 1.460 r.p.m. w atts, 11s. Od. d o z.; 1,000 watts, 19s. doz. Guaranteed Also a quantity of D.C. Starters in stock. made from the finest nickel chrome wire. Wholesale in quiries invited. — Burlton. 302, Short Heath Road. HURST ELECTRICAL INDUSTRIES LIMITED, Birmingham, 23. 7803 75a, Well Street. London, E.9. T^OR sale, i-h.p. A.C. Motor, 50 cys., contin. rat., dual Telephone. AMHerst 4166. • 3000 -1- volt 110/220, 1,425 r.p.m., without slides or pull., B.T.H. mod. rnanf., new cond., cat. 8373: also 4-h.p. do., COX & D A N K S LTD. 230/250, 1,425 r.p.m., B.T.H. mod. manf., new cond., cat. C54084, with 3" V pull. Offers.—18, Peter Street. for Manchester, 2. Bla. 8931. 3095 MOTORS AND DYNAM OS, A.C. AND D.C. XXEAVY duty Arc Welding Plants, 200 amps. Price DISTRIBUTION BOXES, SWITCHGEAR. £31 10s. complete. Also Spot Welders, £36 15s.— John E. It. Steel, Clyde Mills, Bingley. Phone 1066. 50 Large Stocks—Prompt Delivery. TNSU- Glass covered Plain or Enamelled Instrument Visitors always welcome. Wires, No. 18 s.w.g., No. 40 s.w.g., stock deliveries.— Saxonia. Roan Works, Greenwich. S.E.10. 29 FAGGS ROAD. FELTHAM. MIDDX. T EAD-covered and Armoured Cables, P.I. and V.I.R.. Tel. Feltham 3471/3. -U various special lines at low prices.—Edwardes Bros.. 72 20, Blackfriars Road, London, S .E .l. 7836 ESLIE Dixon & Co. for Dynamos, Motors, Switchgpar, large stock of Searchlights (sale or hire), also Winches L Chargers and Telephones.—214, Queenstown Road. A of our self-sustaining type. Hundreds of thousands Battersea. S.W.8. Telephone, MACaulay 2159. Nearest supplied during the last 40 years to Government depart ltly. Sta.: Queen’s Road, Battersea (S.R.). 18 ISTER 10 .5 kW Diesel fully-automatic generating set ments. corporations and innumerable traders. Mirrors. L 210/220 v. D.C. for disposal. Fist-class condition, Lenses. A.I.D. Turnbuckles, etc.. also surplus Carbon Rods. seen running by appointment. Offer required.—John Ebonite and Fibre.—London Electric Firm. Croydon. 42 Shaw & Co. Ltd., Vane Street Works. Hull. 7819 A BOUT 400 yards Heavy Cab Tyre Flexible Trailing "V/TOTOR Generator Sets and Convertors, all sizes and Cable, four-core, suitable heavy cranes, etc.—Box ^ voltages from 4 kW up to 500 kW in stock.— 3076, c /o The Electrical Review. Britannia Manufacturing Co. Ltd.. 22/26, BTitannia Walk, .C. and D.C. House Service Meters, all sizes, quarterly City Road. London, N .I. Telephone, Clerkenwell 5512. A and prepayment, reconditioned, guaranteed one year. 5513 & 5514. 28 Repairs and recalibrations.—The Victa Electrical Co.. 47, 1%/|“OTOR 3 h.p., 400/1/50, 1450 r.p.m ., by L.S.E. Battersea High Street, S.W .ll. Tel. Battersea 0780. 19 unused with push button starter panel, isolator, .C. and D.C. Motors, all sizes, large stocks, fully slide rails, pulley and condenser.—Burnand and Pickett. A guaranteed.—Milo Engineering Works, Milo Road. Wallington, Surrey. 7825 East Dulwich. S.E.22 (Forest Hill 4422). 7528 TI/rOTORISED i" Bench Drilling Machine. 13 speeds, .C. Motors. l/5 0 th h.p. to 10 h.p.. from stock. Also -‘-▼•A £12 2s. 6d. — John E. R. Steel, Clyde Mills, Bingley. A D.C.—The Johnson Engineering Co.. 86. Great Port Phone 1066. 51 land Street, London, W.l. Tel. : Museum 6373. 57 AMEPLATES, Engraving, Diesinking. Stencils. Steel A ERIAL Cables, all sizes quoted for. good deliveries.— N Punches.—Stilwell & Sons L td., 152, Far Gosford Edwardes Bros., 20, Blackfriars Road. London. Street, Coventry. 14 S.E .l. 7833 NE English Electric I.C. Totally Enclosed Horizontal LL types of Transformers up to 15 kVA. including neon O Drawout Isolating Switch Pillar, type S.X.A., suitable A and fluorescent lighting chokes.--Woden Transformer for 400-volt. 3-phase. 4-wire. 50-cycle supply. Ammeter, Co. (Phone. Bilston 41959). Moxley Rd.. Bilston, Staffs. 12 Voltmeter, S.P. earth leakage relay. C.T.'s 220/5 amps., LMOST new Dynamo. 2,150/3.000 amps., 50/70 volts. cable boxes for 4 x .15 P.I.L.C. S.T.A. Cable. Price £75. A 350 r.p.m., self-excited, from stock.—Electroplant —Box 3074, c /o The Electrical Review. Co.. Wembley. 3117 NE modern Ward Leonard Set by Metro-Vick., consist ALTERNATOR by Westinghouse. 200 kW 400/3/50. O ing of 60-h.p., 400-volts, 3-phase, 50-cycles squirrel 300 r.p.m.. with exciter mounted on common bed cage motor direct coupled to 2 94-kW, 220-volt comp.- plate. Complete with control panel and triple pole oil inter dynamos and exciter, ball-bearing set with switch- circuit breaker, voltmeter and 3 ammeters. Can be in gear.—Box 3048, c/o The Electrical Review. spected at—Cox & Danks Ltd.. Plant and Machinerv NE Ruston & Hornsby.Twin Cylinder Horizontal Semi- Dept Faggs Road, Feltham, Mddx., Tel. Feltham 3471/3. O Diesel Engine coupled to 205-kW, 460-v.. 175-r.p.m. y " 3110 G.E.C. compound-wound Generator. Apply— Borough ELT Grinders or Sanders, 4" wide belt. £5 5 s.: 6" wide Electrical Engineer and Manager. Douglas. I.O.M. 3075 B belt. £10 10s.- John E. R. Steel, Clyde Mills, Bingley. NE 42-h.p. Slip Ring Motor. 440 volts, 3-phase, 50 X>ESTMSnglish Cables. 1/.044 up to 127/. 103 deliveries. O cycles, starter and rails; 2 Air Compressors, 6x7; Edwardes Bros.. 20. Blackfriars Road. London. 1 Set Nife Batteries. For particulars write—Ellesmere Jt> Port Electrical Co.. 24. Whitby Rd.. Ellesmere Port. 3064 S E 1 7834 / N APRONS la rg e stocks assorted sizes, solid and cored. NE 45-kVA, 1.000-r.p.m., 400-volts, 4-wire. 3-phase, v J Edwardes Bros.. 20. Blackfriars Road. ~London. ' O 50-cycles, ball-bearing Alternator with exciter and switchboard. £250. Box 3098, c/o The Electrical Review S .E .l. 835 52 E l e c t r ic a l R e v ie w O ctober 19, 1945 ORCELAIN Cleats. 2 and 3 groove, various sizes ex XTLECTRirAL Automatic Toasting Machine required. P stock, pric«- list.—Edward«-« Bros.. 20. Blackfriars prep-rably a “ Toast-Master.” condition not impor Road. London. S.E.L 7837 tant. Reply, stating sizc and price, to -G. Morton. II. ORCELAIN Insulators, various sizes in stock, galv. Victoria Str«?et. St. Albans. H erts. «H P spindles. Edwardes Bros.. 20. Blackfriars Road. ■pN G IN E E R IN G Technical B«x,ks (n« w or ^-condhand) London. S.E.l. 7838 -*-i wanted in any quantity. Attractive cash offers. Call OTARY Converters in stock, all sizes: enquiries —Third floor. 356. Oxford Street, W .l. or “ Stoneleigh. R invited.—Universal Electrical. 221. City Road. St. George's Avenue. Weybridge. 62 London. E .C .l. 16 T^OR many years we have specialised in the purchase of .E.M. Beckenham 3-kW Motor Generator Set. 210 v. -T- surplus electrical equipment of every description. We S D.C. to 110 v. D.C.. excellent condition. £40. or are interested in A.C. and D.C. Motors for re-use. Trans offer.—Box 3100. c/o The Electrical Review. formers. Storage Batteries, and Cable for scrap, etc. Please 0 ET.F-Priming Electric Pumps. 300 g.p.h., £12.—John send your enquiries to—S. Cohen ¿c Sons, Britannia Wharf. ^ E. R. Steel. Clyde Mills. Eingley. Phone 1066. 53 Copenhagen Place. E.14. and to Dynascrap Works. London EVERAL Telescopic Tower Ladders ready for essential Road. Barking. Established 1870. Telephones. East 3844 S work.' Extensions. Trestles and Steps to order.— (3 lines) and E ast 3360. 3007 Shaftesbury Ladders Ltd., 453, Katherine Road. E.7. AfOTORS. D.C.. 480 volts, bail bearings, with control urangewood 3363. 15 -TT gear and slide rails: 1 20 h.p. 1.0 0 0 r . : 2 1 2 h.p. OPECIAL line Bell and Telephone Wires, also screened 1.000 r . : 1 14 h.p. 940 r . : 1 15 h.p. 1.000 r .; 1 12 h.p. ^ wires, large quantity, clean.—Edwardes Bros.. 20. 1.360 r.: 1 3 h.p. 950 r.—J. G. Sneath Ltd.. 5. Wallwood Blackfriars Road. London. S.E.l. 7839 Street. London. E.14. 3101 TAFF Time Checking and Job Costing Time Recorders O EQUIRED, Haldane Printing Machine, type B.1900 or S (all makes) for quick cash sale. Exceptional con T A b .1870 or similar, immediately. Must be in good con dition. Write — Box 528. Smiths. 100, Fleet Streeet. dition. Write—Box 3056. c/o The Electrical Review. London, E.C.4. 31 ROTARY Convertor, input 6.600 volts. 3-phase. 50 WITCH and Fuse Units. Conduits and fittings, works T l cycles, output 400/460 volts D.C. complete with S requirements stocked.—Edwardes Bros., 20, Black suitable transformer and starting panel. Will consider friars Road. London. S.E.l. 7840 unit.;; of one. tw o or three thousand k i l o ^ t t capacity. WITCHBOARDS suitable for dynamos and alternators, Full particulars and price to—Box 3116. c/o The Elec S all sizes from 100 amp. up to 1.500 amp.—Britannia trical Review. Manufacturing Co. Ltd., 22/26, Britannia Walk. London. TV rANTED, new or secondhand, for prompt delivery, one N .I. 25 » ' Medium-sized Electric Furnace. 9" x 4" opening, ^TRANSFORMER Lead-in Wire, 7/38 and 14/38 s.w.g.. complete with conveyor feed and controlled atmosphere Insu-Glass finished, various colours, stock.—Saxonia. equipment, working temperature 700/1.500- C.: also Elec Greenwich. S.E.10. 34 tric Crucible Furnace, internal dimensions approximately .R.S. Cables and Flexibles. Welding Cables supplied.— 8 " x 10". working temperature up to 1.500° C. Both the T Edwardes Bros., 20. Blackfriars Road. London. above complete with thermostatic control and pyrometer. S .E .l. 7841 —Box 3017. c/o The Electrical Review. O A kW Motor Alternator Set. input 220 volts D.C.. out- Y \t ANTED. Rotary Converters, any size.—Universal. put 400 volts. 4-wire, 3-phase. 50 cycles. 1.500 r.p.m.. ’ ’ 221. Ctiy Road. London. E.C.l. 22 with starter and regulator: 25-kW Motor Generator Set. ~I TT ANTED by wholesaler. Immersion Heaters. Thermo- input 400 volt. 3-phase. 50 cycles, output 250 volts. 100 * ’ stats. Irons. Soldering Irons. Kettles. 8 " dial Wall amps.. 950 r.p.m.. ball-bearing set with Ellison starter Clocks, Fractional H.P. Motors. Table Lamps. Standards. and D.C. switchboard.—Newman Industries Limited. Yate. Shades. Car Batteries. Car Bulbs (side. tail. head). Torch Bristol. 3049 Bulbs (2.5 v.. 3.8 v.). Fluorescent Fittings. Samples paid and 30-h.p. National Diesels; 35-kW Browett Steam for. State price and delivery. Write—Solar Electric Lamp * O Set. 220 vo. D.C.: Weir Feed Pump. 8 i " X 6 " X Company. 7. Southlea Close. Leamington Spa. 7809 13": Lancashire Boiler. 24' x 7'. 120 lbs. w.p.; Fuel Oil T 4TANTED. 50.000 Tubular and other Electric Fire Tank. 24' x 9'; 35-kW Tangye Diesel and Dynamo. 220 » ▼ Bars. Wholesalers may receive electric fire supplies vo.; 250-kW Steam Generating Set, 220 vo. D.C.—Harry in return.—Globelite Batteries Ltd.. 90. Victoria Street. H. Gar dam 6c Co. L td. Staines 98. 60 S .W .l. Victoria 9550. 2940 1 /'AfYb.p. “ Laurence Scott” Slipring Motor. 400/3/50. L vIU screen protected, ball bearing, 930 r.p.m. WORK WANTED AND OFFERED Complete with " Allen West ” oil immersed Starter. r r LOCK WORK Controllers for Public Lighting. Clocks. Date 1941. — Stewart Thomson & Sons, Fort Road. V_/ Control and Time Switches, Electric Clocks and all Seaforth, Liverpool. 21. 55 types of instruments and appliances operated by clockwork 1 | /'VkVA Beiliss/Crompton Alternator. 400/3/50. 4- repaired and overhauled. Inquiries welcomed.—J. W. & L ji w wire. Seen running.—Stewart Thomson ¿c Sons. R. E. Hughes (Clockwork Engineers). 58. Victoria Street. Fort Eoad. Seaforth. Liverpool. 21. 47 London. S.W.l. Phone. Victoria 0134. 35 O ^A -kV A Alternator. 400 volts. 3-phase, 50 cycles. 750 ArACHINTNG Work, for Centre Lathes up to 6 $ in. revs., with direct-coupled exciter: also two 250- J T centres and medium-sized milling (good grade work kW Rotary Converters, with transformers and switchgear. preferred).—The London Electric Firm, Croydon. Up input 6.600 volts. 3-phase. 50 cycles, output 420/210 volts lands 4871. 56 D.C.—Midland Counties Electrical Engineering Co. Ltd.. AfODERN Factory. 5.600 sq. ft. floor space, electric Grice Street. Spon Lane. West Bromwich. 36 T l power, offices, etc.. available seasonal work January O A A -am p. Welding Set. 40/60 volt, petrol driven, self to June each year. Labour, and funds for suitable O v/Y J contained, direct coupled, semi-portable, fully employment ready. Please communicate—Secretary. overhauled.—The Electroplant Co. Ltd., Wembley. 3118 W. A. G. Ltd.. Common Road. Aldeby. nr. Becdes. Suffolk. Station. Aldeby. L.N.E.R. 3108 ARTICLES WANTED MALL Armatures, etc.. winding or rewinding, in quan S tity. High-class work, prompt delivery.—Max Electric Co. Ltd. (formerly Southern Ignition Co. Ltd.). 190. Thorn REQUIRED ton Road. Croydon. 59 HORT Run Pierce and/or Blank Specialists.in all metals S and wood to I" thick. 7 to 14 days delivery. Remark ably low costs, no tooling charges. Send us your enquiries. —A.I. Developments. 94. Worsley Road. Winton. Eccles. ■REQUIRED. AUTOMATIC COIL WINDING nr. Manchester. 3078 TV MACHINES FOR ELECTRICAL COIL HHABLE and Floor Standar«Is. Capacity available to WINDING.—Box 38, c/o The Electrical Review. T- manufacture large quantities of table and floor stan dards.—Bimey Smallwood Products Ltd.. Swan Works. Fishers Lane. London. W.4. 3093 TECHNICAL Translation work undertaken by experts. T- —Technigiot. 261. Eversholt Street. Mcmington Cres A CETATE and other thermoplastic scrap: polythene cent. N.W.l. 7 7 33 and P.V.C. in any form: also scrap cable and in ORK Wanted, overhauling, repairing and servicing sulated wire: urgently wanted.—Elton Levy ct Co. L td.. W electro-mechanical equipment and appliances by i 8 . St. Thomas Street. S.E.l. 30 Engineer opening small works South Midlands. Con IESEL Generating Set. 150/250 kW. 440/220 D.C.— tinuous long runs required.—Box «815. c/o The Electrical D Box 3085. c/o The Electrical Review. Review. October 19, 1945 E l e c t r ic a l R e v i e w . 53 AGENCIES BUSINESSES FOR SALE A GENCIES required. South of England, including the A N D W A N T E D area: Cables: (b) Small Switchgear; (c) ¿vSiilKi •!' or any bnes suitable for distribution for wholesalerejmsmess.—BoxA mrxroTXPd 40, c/o The xjiectxiL-aiElectrical ivcvicwReview.. FOR DISPOSAL. \ *if (T required for London, South of England, for EDUCATIONAL NOTICES — C o n ti n u e d MISCELLANEOUS T> ATTERY Chargers Modernised. Your old Charger made ENGINEERING CAREERS AND like new by specialists. Conversion from valve^to metal QUALIFICATIONS rectification. Send for interesting leaflet "Q.D.” on tms service.—Runbaken Electrical Products, Manchester, 1. 45 “PHOTOGRAPHY. Victory ends restrictions. For a OTH Government and industry have announced and permanent pictorial record of your war-time factory B emphasised that young men with technical know and products, for your peace-time advertising, catalogue ledge and qualifications must receive every chance of and general purpose photographic illustrations, phone rising to .the highest posts within their capacity in post Holborn 6858.—Miles & Kaye Ltd., 100. Southampton war engineering and allied industry. Write to-day for Row, London, W.C.l. Specialists in commercial and " The Engineer’s Guide to Success ”—200 courses—free— industrial photography for over 60 years. 2936 which gives particulars of the first-class training supplied rpRANSLATIONS, quick and accurate. Enquiries by the T.I.G.B. for the A.M.I.E.E.. A.M.Inst.C.E., invited.—John Radcliffe, A.I.L.. Rainworth. A.M.I.Mech.E., A.F.R.Ae.S., A.M.I.P.E., B.Sc.(Eng.), Mansfield. Notts. 7826 C. & G., etc., examinations in which T.I.G.B. home-study students have gained 44 FIRST PLACES AND OVER 1,0.00 P A S S E S . The Guide covers careers in all branches, Electrical, Mechanical, Radio, Aeronautical, etc. THE TECHNOLOGICAL INSTITUTE OF GREAT BRITAIN, 35, TEMPLE BAR HOUSE. LONDON. E.C.4. •n PATENT NOTICES fTIHE Proprietors of British Patent No. 539202 for -A- “ Combined Key and Flashlight ” desire to enter into agreement by way of a Licence or otherwise on reasonable terms to ensure its full development and prac tical working in Great Britain. Enquiries in the first instance should be addressed to—A. A. Thornton, of Napier House, 24/27, High Holborn, London, W.C.l. 3096 SPECIAL RELAYS A POWERFUL, ROBUST, SELF- STANDARD RELAYS TIME DELAY RELAYS LIMIT SWITCHES MERCURY SWITCH CONTACTORS ' LABORATORY APPARATUS CONTROL EQUIPMENT TO CUSTOMERS’ REQUIREMENTS There’s NO ft M B TO LO il! These are busy days for Father Time. He's off now to appear in one of our N ational and Provincial press A dvertisem ents telling the public that it's still vital w ar w ork first. . . then will com e the fruits of victory AND TEM CO. S Y n a m o u s t \ i c n u A product .oi TELEPHONE MFC. CO. LTD. Marketed by T.M.C. HARWELL (SALES) LTD., 233_Shaftetbury JWenue._J.ondon. W.C.l r ' October 19, 1945 E l e c t r ic a l R e v ie w 5 5 V ELECTRIC C° LTI WHOLESALE ELECTRICAL DISTRIBUTORS will be pleased to advise on any problem connected with FLUORESCENT ( d a y l i g h t o r warm -white) LIGHTING Comprehensive stocks of E.L.M.A. Lamps, Switchgear of every description, Cables, Conduits, Fittings, Accessories, etc...... Delivery in Greater London by our own transport. FACTORS— B.V.A. RADIO VALVES-C.M.A. CABLES HALSEY’S ELECTRIC CO. LTD. 10 LOWER GROSVENOR PLACE, VICTORIA, LONDON, S.W.I DEI* TELEPHONE : VICTORIA 5762-7 TINE DBA A REA?! irrswnoe :ury swrc- BNTACi* TAPPAMili JUIPMBfllt fQUIEfi® till ¡ma He's ^atiqIqQC teUmn k DTEMa LITHOLITE INSULATORS & ST. ALBANS MOULDINGS LTD WATFORD PHONE : WATFORD 4494 SANTON LT° SO MERTON WORKS NEWPORT 14 MM| w.c-L 56 E l e c t r i c a l R e v ie w O ctober 19, 1945 PAGE Ferranti Ltd ...... 11 Index to Advertisers Foster Transformers & Switchgear Ltd 26 & 27 PAGE Fractional H.P. Motors Ltd ...... 82 Acru Electric Tool Mfg. Co. Ltd ...... 60 Fuller Electrical & Manufacturing Co. Ltd ...... 61 Air Ducts Ltd ...... 34 General Accessories Co. Ltd ...... 34 Alton Battery Co. Ltd ...... 13 General Electric Co. Ltd Cover i & 67 Barber & Colm an L td ...... 82 General Lighting Equipment Co. Ltd ...... 62 B astian & Allen L td ...... 24 Gent & Co. Ltd ...... 39 Benjamin Electric Ltd ...... 10 Girdex Engineering Co. Ltd ...... 22 B raithw aite & Co. Engineers Ltd ...... Cover iii G ordon & G otch L td ...... 56 G relco L td ...... 66 British Central Electrical Co. Ltd ...... 32 G rey & M arten L td ...... 60 British Insulated Callender’s Cables Ltd ...... 9 Griffiths Bros. & Co. London Ltd ...... 74 British Klockner Switchgear Ltd ...... 84 Hackbridge Electric Construction Co. Ltd ...... 25 British Trane Co. Ltd ...... 83 Halsey’s Electric Co. Ltd...... 55 Brush Electrical Engineering Co. Ltd...... 8 Harboro’ Rubber Co. Ltd...... 78 Burco L td ...... 72 Hart Accumulator Co. Ltd ...... 76 Bushing Co. Ltd ...... 78 H assett & H arper L td ...... 82 Cable Makers’ Association...... 63 Castle Fuse & Engineering Co. Ltd...... 58 Heatrae Ltd ...... 1 H edin L td ...... 64 City Electrical C o ...... 58 H eenan & F roude L td ...... 16 Cohen, George, Sons & Co. Ltd ...... 57 H endrey Relays L td ...... 54 Contactor Switchgear Ltd ...... 60 Henley's, W. T., Telegraph Works Co. Ltd...... 68 Cressall Manufacturing Co. Ltd ...... 24 Hewittic Electric Co. Ltd...... 64 Crompton Parkinson Ltd ...... 2, 19 & 73 Hildick & Hildick ...... 76 Crypton Equipment Ltd 26 & 27 Horstmann Gear Co. Ltd ...... 32 ...... 30 Cryselco Ltd Insulators Ltd ...... 17 Dalyte Electrical Co. Ltd ...... 66 Johnson & Phillips Ltd ...... 31 Davis & Timmins Ltd...... 84 Jones, Samuel, & Co. Ltd...... 80 Desoutter Bros. Ltd ...... 3 Lancashire Dynamo & Crypto Ltd ...... 26 & 27 Donovan Electrical Co. Ltd ...... 60 Laurence, Scott & Electromotors Ltd ...... 42 Dowsing Co. (Electrical Manufacturers) Ltd ...... 81 Legg (Industries) Ltd ...... 77 Duratube & Wire Ltd...... 59 Litholite Insulators & St. Albans Mouldings Ltd... 55 Earle Bourne Co. Ltd...... 78 Londex L td ...... 84 Electric Construction Co. Ltd ...... 21 London Electric Firm ...... 54 Electric Depot Ltd ...... 32 L.P.S. Electrical Co. Ltd ...... 62 Electric Elements Co ...... 72 Ellison, George, Ltd ...... 38 Lundberg, A. P., & Sons Ltd ...... 75 Engines & Electrics Ltd ...... 82 Maybrey, H. J., & Co. Ltd...... 64 English Electric Co. Ltd ...... 5 M cClure & W hitfield...... 76 Erskine, Heap & Co. Ltd ...... 33 M.C.L. & Repetition Ltd...... 1 Everett Edgcumbe & Co. Ltd ...... 40 Mek-Elek Engineering Ltd...... 60 Ferguson, Pailin Ltd ...... 15 {Continued on page 58) FOR IDENTIFICATION —of cables, wiring systems etc.. for sealing joints, masking and, of course, for packing. SELLOTAPE gives instan taneous adhesion without the addition of moisture or heat, and keeps out air. dust and damp. Easily stuck on. it will adhere to. yet peel off hard surfaces that will not take an ordinary adhesive. Whatever the job— get it taped ’ with The ability to think ahead and to appreciate the problems of others is innate at Woden, and is visibly evidenced in our own productions as well as in those components we are privileged to build for other manufacturers. If there fore you are looking ahead and would welcome intelli gent co-operation in the production of your new or redesigned projects we would like to hear from you. We specialise in all types of transformers up to 15 kVA, including neon and fluorescent lighting chokes. ¿ilablc in any Colours for identification. Plain for transparency. iiin n e il transformer SELLOPROOF for complete water UJ U U L II COMPANY LTD proofing. [RANSFORMERS AMPLIFIER S LOUDSPEAKERS Official Distributors : Dept. ERI. RADIO AND ELECIRONIC COMPONENIS GORDON & GOTCH LTD. MOXLEV ROAD BILSTON STAFFS 75-9, Farringdon St., London, E.C. TELEPHONE: BILSTON 41959 r)c'n review 57 e'-19, 1945 E l e c t r ic a l . ,A~ ato#? f t x / * * * Smile, if you will, at the worthy Buggins, but after all isn’t e v e ry castle first built in the air ? D oesn’t every new industrial undertaking, say— every extension of a Works—originate as a mere concept in some enter prising person s imagination ? Soon the time will come for turning such concepts into concrete— and then Plant and M achinery will be needed. T h at’s where we come in Whatever your needs we can certainly heip to fulfil them promptly from the LARGEST STOCKS of MODERN SECONDHAND PLANT AND MACHINERY in the Country, which include Generating Sets, Motors, Switchgear, Transformers, Diesel Engines, Boilers, Pumps, Air Compressors, Cranes, Locomotives, Power Presses and Sheet Metal Working Machinery, Track and Wagons, Tanks, Steel Sections, Tubes and Fittings, and virtually every kind of modern Second hand Works’ Equipment. i COHEX, Sons & Co., Ltd v ® ” ,,E _ LONDON,rA\mn\ wi9W .12 & STANNINGLEY,sTAivnvnvcT rv tvfai?NEAR LEEDS one of the W OO* ^ rh ^ slULhondo7n Estabiished t834 C o b ^ S S G ram s: 0nU1‘p gijmingham • Sheffield • Glasgow • Newcastle - on - Tyne 6 0 0 And at • Southampton Bath • Belfast * Swansea ' etc. ' etc. GROUP Manchester ' 455/83* 5 8 E l e c t r i c a l R e v ie w O ctober 19, 1945 Index to Advertisers ( Continued fro m page 56) page zenith Metropolitan-Vickers Electrical Co. Ltd ...... 37 (Regd. Tiode-Marld Micanite & Insulators Co. Ltd ...... 12 Ministry of Fuel and Power...... 36 Moore’s (Bournemouth) Ltd ...... 66 REGULATING Morgan Crucible Co. Ltd ...... C over iv Mycalex Co. Ltd ...... 71 RESISTANCES Parmiter, Hope & Sugden Ltd ...... 59 Pitman, Sir Isaac, & Sons Ltd ...... 80 Poles L td ...... 76 BACK-OF-PANEL P ope’s Electric Lam p C o. L td ...... 44 MOUNTING Premier Electric Heaters Ltd ...... 23 P ultra L td ...... 81 All mechanical parts Pye L td ...... 70 entirely Insulated. Ray Engineering Co. Ltd ...... 32 Simple construction. Record Electrical Co. Ltd ...... 80 Easy to fix. Rediffusion Ltd ...... 14 Durable and reliable in Rhodes, Brydon & Youatt Ltd ...... 80 o p eratio n. Ross Courtney & Co. Ltd ...... 1 Single and Double Tubu R uberoid Co. L td ...... 78 lar types In various Runbaken Electrical Products...... 84 sizes. Santon L td ...... *...... 55 Ample rating. Saxonia Electrical Wire Co. Ltd ...... 64 Scholes, George H., & Co. Ltd ...... 70 INSIST O N Scott, A. C., & Co. Ltd ...... 28 Z EN IT H PRODUCTS Senior Economisers Ltd ...... 69 — It will pay you. Simmonds Aerocessories Ltd ...... 43 Simmonds & Stokes Ltd ...... 28 CATALOGUE OF ALL Sims, F. D., Ltd ...... 70 TYPES POST FREE Skefko Ball Bearing Co. Ltd ...... 79 Sordoviso Switchgear Ltd ...... 22 Sparklets Ltd ...... 62 The ZENITH ELECTRIC CO. Ltd. Standard Telephones & Cables Ltd ...... 65 Sble Makers of the well-known ” Zenith " Electrical Products Steatite & Porcelain Products Ltd ...... 4 Stirling Boiler Co. Ltd ...... 20 ZENITH WORKS, VILLIERS ROAD Sturtevant Engineering Co. Ltd ...... 7 WILLESDEN GREEN, LONDON, N.W.S Taylor & Petters Ltd ...... C over iii Telco L td ...... 24 'Phont : WILIesden <087-8-9 'Crami : ’’ Volcaohm, ’Phone, London" Tenaplas Ltd ...... 66 Thermoelectrics Ltd ...... 58 Thew, Edward H., Ltd ...... 84 Thornton Products Ltd ...... 74 T.M.C.-Harwell (Sales) Ltd ...... 54 Trionite Ltd ...... 62 Tufnol L td ...... 77 REPAIRS Tullis Russell & Co. Ltd ...... 6 As a result of extreme pressure of Priority Tyne Truck & Trolley Co. Ltd ...... 24 Vent-Axia Ltd ...... 22 work we resret we are unable to accept Veritys Ltd ...... 35 & 41 F. H . P. m otors for repair o r rew inding Viscose Development Co. Ltd ...... 29 until further notice which will be notified Walsall Conduits Ltd ...... C over ii to our customers immediately the situation Waltef, D., & Co. Ltd ...... 74 becomes easier. OUR ELECTRIC HEAT W ard & G oldstone L td ...... 71 ING PAD AND BLANKET REPAIR DEPT. W ardle Engineering C o. Lt d ...'...... Cover iii West Insulating Co. Ltd ...... Cover iii WILL STILL MAINTAIN ITS 48 HOUR Westinghouse Brake & Signal Co. Ltd ...... 18 SERVICE ON ALL MAKES. Westminster Engineering Co. Ltd ...... 1 Woden Transformer Co. Ltd ...... 56 Wright & Weaire Ltd ...... 83 THERMOELECTRICS LTD. Yarrow & Co. Ltd ...... 75 II Copse Hill, Wimbledon, S.W.20 Zenith Electric Co. Ltd ...... 58 -Immediate D eliveries/■ " Triumph ” Fuses are in stock, for Switchboard and Busbar Mounting, in all ratings from 5 amps. 250 volts to 350 amps. 500 volts. Prompt deliveries of all types of Distribution Boards, including H.R.O. The only Rewirable H.O. Fuse Incorporating both pressure self aligning contacts and vented explosion chamber in base. Sole Patentees and Manufacturers :— The Castle Fuse & Engineering Co. Limit«' Castle Works, 31/35 Chester Street, Liverpool 8 . Phone : Royal 1610. G ram s : “ Corundum, Liverpool ” October 19, 1945 E l e c t r i c a l R e v ie w 59 INSULATED HOUSE SERVICE CUT-OUTS are suitable for domestic and small power consumers, both, on single-phase or three-phase underground or overhead supplies. Embodying Aeroflex high breaking capacity, rewirable cartridge fuses, they meet all con ditions of duty. Loop-out and busbarring facilities are provided, with moulded sealing chambers to suit paper insulated cables. PARMITER, HOPE & SUODEN LTD. Fluvent Electrical W orks Longsight, Manchester 12 MICOFLEX-DURATUBEX Plain and reinforced P.V.C. Insulating Sleevings of highest workmanship. Complete range of sizes and thicknesses; in various degrees of hardness ranging from Super Flexible to Rigid. fylu&lWiAfhy ShUndA... p r o o f PUJUCA61.ES Ü ^ ß l N c MICOFLEX - DURASLEEVE P.V.C. Covered Metallic Flexible Conduit in all Standard Sizes S'ole M an.ufactu.rers :— Sole distributors to the ElectricalSEng'meerincrIndustries d u r a t u b e g w i r e ltd THE MICANITE 6 INSULATORS C o.Lt d . FELTHAM, MIDDLESEX. WALTHAMSTOW, LONDON.E.17. 6 0 E l e c t r i c a l R e v ie w O ctober 19, 1945 CONTACTOR SWITCHGEAR LTD ... J^ e/y on D a'onovans - WOLVERHAMPTON m r GRADUATED RESISTANCE STARTING OF ^ J le Ckroniaclor SLIP RING MOTORS O verload A der ★ Gives positive protection to both A.C. and D.C. motors against 15% continuous over Write us fo r load (or 10% if specially ordered). The instrument will either trip out or actuate a full particulars warning on overload, but will not trip prematurely on heavy starting peaks up to 45 seconds duration. A NEW DEVELOPMENT IN DON OVERLOAD A PROTECTION THE DONOVAN ELECTRICALCT BIRMINGHAM. 9 /foiW-STEcMFOAo 2277 (P.B.X) GREY&MARTENLTD. Manufacturers F o r For all Electrical W ork. To British Standard or any other specifications. s W ith a reputation for purity of consti^ tuents and excellence of appearance. o LONDON: L SOUTHWARK BRIDGE S.E.l Phone : Hop 0414 Grams : Amalgam, Boroh BIRMINGHAM: MEK-ELEK Engineering Ltd. E 17 W estern Road, Mitcham, Surrey 11 JAMES STREET 3 Phone : B’ham Cent. G Grams : Amalgam, B’bam The PYROBIT Soldering Iron for Precision Instrument W ork can be operated like a pencil With only 45 watts a Bit Temperature of over 300 C is obtained For all Voltages. Also for 6 and 12 volts The Acru Electric Tool Mfg. Co. Ltd. 123 HYDE ROAD, ARDWICK, MANCHESTER 12 Telephone : ARDwick 4284 October 19, 1945 E l e c t r ic a l R e v ie w THE FULLER UNIVERSAL WELDING HELMET is fitted with a double window, the top portion being of a light green shade, and the lower portion of a darker green shade. Between these two windows is fitted a light baffle. The operator sights his job through the upper window and positions his electrode, then, raising his head slightly, commences welding, his line of vision being through the lower dark portion of the window. This arrangement enables the operator to strike an arc exactly on the spot where welding is to com mence, thus eliminating unsightly flashes on the surface of the work. The importance of this will be especially apparent to all who are engaged in the fabrication of alloy steels. For particulars of its many advantages and for prices write to FULLER ELECTRICAL AND MANUFACTURING COMPANY LIMITED (Associated with A5EA ELECTRIC LIMITED) FULBOURNE ROAD • WALTHAMSTOW - LONDON - E-17 L ktwood 23S0 (1° '•"«*) B R A N C H O F F I C E S : M A N C H E S T E R 2, B I R M I N G H A M , G L A S G O W Fullmagc. Telex. London 6 2 E l e c t r i c a l R e v ie w O ctober 19, 1945 — -- PRINCIPAL PRODUCTS " L.P.S.— DUDLO ” ENAMELLED COPPER WIRE SILK COTTON PAPER & GLASS INSULATED WIRES SUPRONIC & HAETANIC RESISTANCE WIRES STRANDS, BRAIDS & PLAITS CORDS FOR TELEPHONES, RADIO & DOMESTIC APPLIANCES THERMOPLASTIC INSULATED WIRE & TUBINGS CABLES & FLEXIBLES L.P.S ELEC T R IC A L CO LTD A LP E R T O N MIDDX TELEPHONES: PERI VALE 5621-2 TELEGRAMS: ENGINEYOR, PHONE, LONDON Contractors to H.M. Government Supply Depts., G.P.O., Dominion Governments and Leading Railways. ------NON-FERROUS IM P R O V E D ~ , P R O D U C SAND CASTINGS * ‘ Reg. Desigr — — • No 8377441 In all Paient No. 5457 non-ferrous metals triONite TRIONITE LTD. f» IS ytT H CLIFFE VALE, STOKE-ON-TRENT T E L E P H O N E 2171-2 It? g I lHJ ID EAL FOR THE POCKET OR MILADY'S L H A N D B A G WIRE CONTRACTS FOR HOME MARKET & BRAIDING ENQUIRIES FOR EXPORT INVITED Retailers please apply to their Wholesalers manufacturers : WRITE FOR BOOKLET TO:— SPARKLETS LTD., WIRE WEAVING DIVISION. LONDON. N.I8. LTD . SINGER ST. CHAMBERS CLECO GT. EASTERN STREET, E.C.2 Telephone ; CLERKENWELL 7744-5 October 19, 1945 E l e c t r i c a l R e v ie w 6 3 O n vatd t afitet l/ictotu y y H E N the National effort has been crowned with overwhelming success in WAR production British factories must swing back to no less intensive production for the re habilitation of the Nation and the World. Electrical cables, essential for war, are no less essential for the arts of PEACE, and the lessons learned in war call urgently for devel opment and application by the best brains in Rtgd. Trade Mark the Industry. N ot. 666, 686-6-7 Users of C.M.A. Cables MEMBERS OF THE C .M .A . can rest assured that they The Anchor Cable The India Rubber, are served by unsurpassed C o. L td. G utta-Percha&Tele British Insulated graph W orks Co. Ltd. Cables Ltd. (TheSilvertown Co.) products of Research and C a lle n d e r’s C able & Liverpool Electric Cable Co. Ltd. Construction Co. Engineering. L td. The London Electric W ire Co. and Smiths Connollys (Blackley) Ltd. Ltd. The Macintosh The Craigpark Elec Cable Co. Ltd. tric Cable Co. Ltd. The M etropolitan Crompton Parkinson Electric Cable & Ûe ia fr and Me Ltd. (Derby Cables Construction Co. Ltd.) Ltd. Enfield Cables Ltd. Pirelli-General Cable W orks Ltd. Edison Swan Cables (General Electric Ltd. Co. Ltd.) W. T. Glover & Co. St. Helens Cable & L td. Rubber Co. Ltd. Greengate & Irwell Siemens Brothers & Rubber Co. Ltd. Co. Ltd. (Siemens W . T. H e n le y ’s Electric Lamps and CM.A. Supplies Ltd.) Telegraph W orks C o. L td. Standard Telephones & Cables Ltd. Johnson & Phillips L td- Union CableCo.Ltd. CABLES Advt of the Cable Makers’ Association, High Holborn House, 52-54 High Holborn, W.C. I. Ho/6orn7633 E l e c t r i c a l R e v ie w O ctober 19, 1945 ALUMINIUM ALLOY-v-CAST IRON Aluminium Die Castings cut out machining and give a better and cheaper article MAYBREY’S SPECIALISE IN: HIGH GRADE SAND AND GRAVITY Typical H ewittic Rectifier for Industrial Supply DIE CASTINGS IN LIGHT ALLOYS PATTERN AND DIE MAKING X-RAY AND MECHANICAL TESTING CONVERTING A.C. to D.C. H. J . MAYBREY & CO. LTD. The simplest, most reliable converting ALUMINIUM ALLOY FOUNDERS A.I.D. APPROVED AIR MINISTRY, MINISTRY OF SUPPLY AND plant made, backed by over 30 years of ADMIRALTY CONTRACTS rectifier experience ; robust, easily WORSLEY BRIDGE ROAD, LONDON, S . E .2 6 installed, occupying minimum floor- B E C K E N H A M 0044 space, operating unattended (even in the largest installations), with high efficiency (down to the lowest loads) and corresponding economy in operation. F O R --- All forms of Electric Traction, D.C. Industrial Drives, Cranes and Magnetic Plant, D.C. Light and Power Distribution Systems, Battery Charging for Electric Vehicles, Emergency Lighting, etc. — for every application where D.C. is required from A.C. supply. OVER 750,000 kW I N WORLD-WIDE SERVICE KNIGHTON LANE.BUCKHURST HILL. ESSEX. HEWITTIC ELECTRIC CO. LTD. WALTON-ON-THAMES, SURREY ELECTRIC HEATING APPLIANCES Telephone : Telegrams : Walton-on-Thames760(Blines)."Hewit^f,Walton-on-Thames” TO YOUR SERVICE October 19, 1945 E lectrical Review 65 POWER CABLES IN LANCASHIRE AND CHESHIRE Cable Bridge crossing Canal in Accrington Area. Testing a complete installation at Blackburn. r\ U R IN G the war we hâve carried out important contracts for the supply and installation of underground cables for voltages up to, and including, 33 kV throughout Lancashire. W e have also installed extensive underground and over head systems to the special requirements 3-33 kV H.S.L. Cables, Double Lead Sheath and S.W .A. installed in Mersey Tunnel. of Government Departments in this Area. Our Area Staff are fully equipped to deal with any urgent Power Cable problem or emergency which may arise. Stan d ard Telephones and C ables Lim ited N O R T H W O O L W I C H , L O N D O N , E.I6 Area Representative : Tel. Gatley 3066. Contract Office: Tel. W arrington 672. 66 E l e c t r i c a l R e v ie w O ctober 19, 1945 TENAPLAX Co-axial Cable SOME TENAPLAX CABLES HAVE 6 0 % A IR INSULATION Patented method of construction reduces losses to a minimum Plastic Cover < Electrical Screening < Alkathene Sleeve « Braided Alkathene • Filaments C A N BE Conductor • S U P P L IE D F O R A N Y Write for full particulars to : K IN D O F HIGH TENAPLAS LIMITED FREQUENCY 7 PARK LANE, LONDON, W.l EQUIPMENT CABLE REELING DRUMS DIECASTINGS The illustration shows a power driven cable reeling drum, with motor, control gear, limiting device and brake, com plete with 425 ft. 4-core li* o.d. PRESSURE flexible cable, for use with Well pumps, etc. There is a Deco AND “ »ling drum for every need. GRAVITY Write for new brochure. DIE-CASTING IN ALUMINIUM ZINC& BRASS Grelco ALLOYS TERMINAL BLOCKS FOR THE Best quality, black bakelite,Terminal ELECTRICAL TRADES Blocks or Connectors. Used extensively for telephones, telegraphs, radio, bells, signals, relays, traffic signals, etc., 2 , 3 , 4, 5 , 6 , 8 , 1 0 and MOORE’S (Bournemouth) Ltd. 1 2 way in Four Types. 285 HOLDENHURST RD. Fully illustrated descriptive Folder on application BOURNEMOUTH GRELCO Ltd., Grelco Works,Hopcott,Mlnehead,Somerset T e le p h o n e : BOSCOMBE 2400-1 October 19, 1945 E l e c t r ic a l R e v ie w 67 tdwtu/s üt i/te friefunt of eleducal f) unless The G.E.C. were world pioneers in the development of G.E.C. Electrification the steelclad, pumpless, air-cooled rectifier, which Schemes have been revolutionised electricity conversion practice. It can applied to all industries» be built up with transformer and switchgear to form a including: Aircraft Factories ; Chemical complete sub-station of unit construction. The first Works ; Collieries ; Food installations for traction, industrial and municipal Factories ; Gold Mines ; services respectively were all of G.E.C. manufacture. Iron, Steel and Copper Works ; Locomotive and During the war the vast technical and manufacturing Railway Carriage and resources of the G.E.C. were concentrated on the war Wagon Works ; Motor Car Works ; Ships and effort. For every fighting front, for war transport, Shipyards; Textile work in factories, mines, hospitals, and in countless Mills, etc., etc. other situations, the Company supplied vital equipment. Electrical progress was greatly accelerated, and many important advances made in all applications of RnnL- Wnn Oth electricity, including electronics, which will be of , ' inestimable value to all concerned with reconstruction for trie h.l.D.A. or development schemes. t Victory Ball THE GENERAL ELECTRIC CO. LTD., MAGNET HOUSE, KINGSWAY, LONDON, W.C.2 F 6 8 E l e c t r i c a l R e v ie w O ctober 19, 1945 BO XES you CAN BU M A N D F O R C E S Book November 9th, E.I.B.A. Victory Ball The design of HENLEY “ Cablegrip ” type Boxes is based on years of experience of practical jointing con ditions, and incorporates all those Note ample room features which facilitate jointing opera for splaying of tions. Their complete reliability bears cores. out our claim for these boxes— that you can “ bury and forget.” The range of “ Cablegrip ” type boxes include Straight Through, Service and Branch Boxes for underground instal lation. The “ Cablegrip” gland and armour clamp, which is a feature of the boxes, is illustrated below. HE-NLEY “CABLEGRIP” Completed Multicore Joint (above) and Box with top half in position (below). STRAIGHT THROUGH SERVICE & BRANCH BOXES The “ Cablegrip ” gland and armour clamp provides two wide bearings for the cable. A highly efficient bond to the lead sheathing is effected by means of a cast iron shuttle (A) and to the armouring by means of a cast iron armour clamp (B). Please ask for Catalogue UCD.2, and Supplement. W. T. HENLEY’S TELEGRAPH WORKS CO. LTD. chancery 6822 ei_cTtD l DO HATTON G A R D E N I . . , t-WMLVWlVy LO N D O N . cE*C*I y. I CRAMS: HENLETEL,SMITH,LONDON October 19, 1945 E l e c t r ic a l R e v ie w (Supplement) 69 HEENAN TWINTU BE ECONOMISERS FOR THE CENTRAL POWER STATION AND THE INDUSTRIAL POWER PLANT Three of the important constructional features which keep Heenan Twin- tube Economisers still pre-eminent Economy of Space SENIOR ECONOMISERS.£TD II.SOUTHAMPTON ROW. LONDON. W.C.Il 7 0 (Supplement) E l e c t r ic a l R e v ie w O ctober 19, 1945 COVERED WITH ENAMEL COTTON SILK VARNISH GLASS ENAMEL AND PAPER Samples and Prices on Application M A D E B Y F. D. SIMS LTD HAZELHUR8T WORKS. RAM8B0TT0M, LANCS Telegrams : Telephone : "SIMS, RAMSBOTTOM ” RAMSBOTTOM 2713/'! Universal Switches Design Engineers looking for a small com p act Switch for test and experimental work in Engineering Departments, Research Laboratories and Production Lines should enquire from Pye Ltd., for full details and samples of their Universal Switches. SWITCHES Tens of thousands of these fine-limit switches are on active service on f nr British Aircraft all over the world. SPECIFICATION—Snap Action. Balanced movement. Weight—2 ozs. approximately. COMPACTNESS Overall size— 2" x f x 1." Contact rating —5 am ps, at 250 v. A.C. High Contact pressures. Proof against ordinary vibration. Internal Override Spring incorporated. Sealed against li/y/ex m ust be y o o d petrol, oil, dirt, moisture, etc. Robust case. Short plunger requires depression of .020" to operate. Long plunger requires depression G EO R G E H. SCHO LES of .060" to operate. Numerous switching combinations available. Silver contacts. & Co. LTD. P Y E L T D RADIO WORKS Wylex Works, Wythenshawe CAMBRIDGE MANCHESTER October 19, 1945 Electrical Review (Supplement) 71 This illustration shows one of many types of Connectors manufac tured by us for use with PORTABLE APPLIANCES. W e specialise in com plete flexible assem blies. Let us quote for your requirements. WARD&GOLDSTONE Ltd . Pendleton, M anchester. 6. ESTABLISHED OVER HALF, A CENTURY M o u l d in g s Much to our customers’ relief we do not go in for this type of moulding, but we do make all kinds of M ycalex m o u ld ings. So why not send us your enquiry ? • A ccurate • Heat resisting • Rigid • Metal inserts • Low Loss • Non Absorbent Send for illustrated brochure MYCALEX COMPANY LIMITED CIRENCESTER . GLOS. M Y 9 7 2 (Supplement) E l e c t r i c a l R e v ie w O ctober 19, 1945 .. over the horizon begins its post-war In your wartime production programme with the new model you may have lost touch with your pre-war sources of supply, and as you turn to peacetime production you will 6 0 0 desire to link up with some which sets a new standard in competent, helpful supplier of sub-assemblies, welded compo Electric Boiler design and efficiency nents, presswork and the like. The time to make arrange Constructed in galvanised ments, however, is now. Why steel, excellently finished. not write to us and let us Full opening of the hinged start helping you now ? lid gives complete access to boiler, eliminating potential dirt traps. Top casting is aluminium. COMPONENTS G irdex ASSEMBLIES GIRDEX ENGINEERING CO. LTD. WESTON LANE. TYSELEY, BIRMINGHAM 11 Phone : Acocks Green 2205 Grams : GIRDEXPRES P.M.3 »P1RALS MICA-ELEMENTS Foot press switches on boiler — or three-heat rotary switch on boiler wall-mounting according to type Serviceability with M o d e rn ity Particulars from : B U R C O LTD . The ELECTRIC ELEMENTS Co. ROSE GROVE, BURNLEY NOTTINGHAM. October 19, 1945 E l e c t r ic a l R e v ie w {Supplement) 73 rfe - BUILT FOR A HARD LIFE C R o m p ? e n W .0.D 3. CABLE CROMPTON PARKINSON LIMITED, ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W.C.2 Telephone : T EM ple Bar 5911 Telegrams: Crompark Estrand, London 7 4 (Supplement) E l e c t r i c a l R e v ie w O ctober 19, 1945 Vacuum Impregnation thenlet us give you the Process benefit of our practical a cause experience of worry Consult - GRIFFITHS BR0 S.& CO.LONDON LTD PAINT. ENAMEL & INSULATING VARNISH SPECIALISTS MACKS ROAD. BERMONDSEY S.E.I6 _ First in the Jie fd offjritisü lm u iatm q V ai'n isfi M at iff fête tu rn 's - an d s tilt forent est SPOTLIGHTS - FLOODLIGHTS - DIMMERS STAGE BATTENS AND FOOTLIGHTS THEATRE AND CINEMA EQUIPMENT SPECIAL DISCOUNTS TO TRADE D. W ALTER & CO. LTD. A c t u a l M anufacturers 61-63 LA N T STREET. L O N D O N , S.E.I T E L E P H O N E : H O P 3651 B r o n t e DOMESTIC AND COMMERCIAL ELECTRIC LIGHT FITTINGS IN CHROME, BRONZE, ANTIQUE BRASS, OXY-COPPER, AND COLOURED ENAMELS THORNTON PRODUCTS LTD., Bronte Works, THORNTON, BRADFORD October 19, 1945 E l e c t r ic a l R e v ie w (Supplement) 75 UND & MARINE WATERTUBE BOILERS YARROW & CO. LTD. SCOTSTOUN GLASGOW “ n P C* O 9 9 double-pole Q W IT f U U • r .V .V / . CHAIMGE-OVER J YY I I V- H 5 and 25 A. WITH at AND 250 V. D.C. WITHOUT and 500 V. A.C. “ O F F ” Surface, Ironclad, Leaflets and Flush El, 105 and 106 C irc u it A in Use " O ff ” Position C irc u it B in Use (K n o b U p ) (Knob Central) (Knob Down) A. P. LUNDBERG & SONS, LTD., 491/493, LIVERPOOL RD., HOLLOWAY, LONDON, N.7 7 6 (Supplement) E l e c t r i c a l R e v ie w O ctober 19, 1945 HART St o r a g e Batteries FOR Electric Lighting and Po w e r Installations W R I T E F O R CATALOGUE PY APPOISTMIT TO H.M. TH* K1HO MAKBR8 OT AOOUVULiTORg. AMASTItA HART ACCUMULATOR CO. LTD. HIGH MAR8HGATE LANE, STRATFORD, LONDON TE N S IO N POLES Telephone: M A R y la n d 1361/3 n _ , _ _ I T n TYBURN R? ERDINGTON. Branches at Birmingham, Bristol, Cork, Dublin, Glasgow, Manchester POLES L_ —BIR M...... IN G H A M . 24."■ Newcastle-on-Tyne • Nottingham and Westminster MeCLURE t WHITFIELD MERSEY DYNAMO WORKS, STOCKPORT (icftucal Telephone: Telegrams : CONDUITS £ STOCKPORT 365314 "MOTORS, STOCKPORT" FITTINGS D r MOTORS • v . G E N E R A T O R S || for COMPRESSORS CRANES HOISTS PUMPS MACHINE TOOLS, etc. LIGHTING SETS \ V tor Ships’ Auxiliaries. Anodising and Plating. These approved and certified Conduits and Fittings are M.G. Sets. consistently reliable under the most arduous conditions of service. You can soeclfy none better. London Office : HILDICK & HILDICK City House, 158 City Road WALSALL TUBE WORKS LONDON, E.C.I PLECK ROAD.WALSALL . W a"l .2 U 3 . Telephone : Telegrams : CLErkenwell 8656. " TRIBORD , PHONE . LONDON” .otHton SWm : 9 Howl« 9 Him Wm, Bowlind St.. W.l. Ptw, : Hunwi 6226 - - ^ j g g y r October 19, 1945 E l e c t r ic a l R e v ie w (Supplement) 77 n t a c A ù ù r t J BAND SAWING. It is essential to have Band n o ! saws sharp and lined lightweight THE ENGINEERS MATERIAL. NON-METALÜC accurately. Set guides in close, saw just touch ing thrust wheel when running light. Hand saw shape tooth, set .025 " each side, is only suitable shape for sawing Tufnol. Hard back^saws prevent blade distortion and can be resharpened and reset satisfactorily. Use 7 teeth per inch saw at 5500 feet per min. on Tufnol up to 2" th ick. I Further information on speeds and sizes of saws and on sawing with Hand, Jig and Circular saws is contained in our “ Manual on Machining Tufnol.” TUFNOL LI2 PERRY BARR BIRMINGHAM 2 2 B Î40 RECTIFYING L E GC (INDUSTRIES) Ltd, EQUIPMENTS WOLVERHAMPTON 7 8 (Supplem ent) E l e c t r ic a l R e v ie w O ctober 19, 1945 ( SYNTHETIC RESIN LAMINATED PAPER 1 INSTRUMENT AND METER TUBES. SHEETS, INSULATORS. EARLE BOURNE &C? L» THE BUSHING CO. LTD. MANCHESTER H E BBURN-ON-TYNE (MOULDED RUBBER PARTS) FOR TRAM £ TROLLEY W ORK FOR CABLE CONSTRUCTION £ REPAIR FOR USE IN CHEMICAL FACTORIES P & B Insulating Tape retains its adhesiveness and offers permanent resistance to mechanical damage. It is proof against water and the fumes P s B of acids and alkalis. Supplied in rolls from b " width upwards. INSULATING As our industry is controlled our ability to execute orders is subject to the regulations im TAPE posed by the Ministry of Works. THE RUBEROID CO. LTD. 92 Commonwealth House, New Oxford Street, W.C.I THE HARBORO’RUBBER CO. LTD.. MARKET HARBOROUGH October 19, 1945 E l e c t r ic a l R e v ie w (Supplement) SPtEDlHG UP fharacter'st'cs aon’t c.hange the"_ rerna\ns that Uer bearing d° , but the f»«* nt ones Ba" ^ They do » * * ay to «nore ^ 1 rat1ge beca have had to g bring 4 e • • • !onae t,p«MV „* years. T ,y uke tW BurlNS th' ( *,U' >e back W » sPbee„ done th^ ear.,„s P '°We^ ^.priority” •“ " i 1»^er » ^ ^ “„„hlle « ^ or ,11 « W’"? ” * «1« t l m e - » ' C ° P T h a t 's T0O a 0 "0 ^ J THE SKEFKO BALL BEARING CO.. LTD LUTON O k 1 BRITISH MANUFACTURERS 1 OF THE WORLD RENOWHED 1 SKF BEARINGS L . . 80 (Supplement) E l e c t r ic a l R e v ie w October 19, 1945 M * p u m p ‘MINOR’ TEST SET FOR INSULATION TESTING Motor • Driven You could not have a m ore reliable o r m ore con* Pump venient tu t set than the “ Record Minor.*’ Made in unit construc with the high " Record *' precision, this compact tion suitable for unit gives direct and dead accurate readings inde pendent of voltage variation. The case is of general Water reinforced bakelite, size 5 X 3£* X 3f*, with Service clear open scale 5,000 ohms to 20 megohms. Boosting low Weight only 3 lb. Height allows full swing of pressure supplies handle. A free handle is fitted to prevent the Pumping oils and generator being turned in the reverse direction. chemicals RECORD ELECTRICAL CO. LTD. R h o d e s , B r y d o n & Y o u a t t Lt d . BROADHEATH * ALTRINCHAM * CHESHIRE Stockport England. Tel.: Altrincham 3221/22. Grams: "Infusion," Altrincham London Office : 28, Victoria Street, S.W.I. USEFUL BOOKS POWER SYSTEM INTERCONNECTION By H. Rissik, Hons. B.Sc. (Eng.)., A.M.I.E.E., M.A.I.E.E. An authoritative work of which the main purpose is to acquaint the practising engineer, as well as the advanced student, with the several analytical and semi-graphical methods that have been developed during the last two decades, for calculating the performance of inter connected power systems. Profuse diagrams and useful bibliography. 25s. n e t ALTERNATING CURRENT BRIDGE METHODS By B. Hague, B.Sc., Ph.D., etc. A leading theoretical DECONTROLLED^ and practical handbook, of great value to advanced Self-adhesive cloth, paper students, engineers and research workers. This edition and cellulose sealing and records a widening range of applications in addition to masking tapes, are now important advances in fundamental theory. 30s. n e t available for all pre-war and new trade users. N.B. Paper rationing means a shortage of books. The ENQUIRIES WELCOMED. one you want may be temporarily out of stock. PITMAN HOUSE KINGS WAY PARKER STREET PITMAN LONDON, W .C.2 SAM DEL JONES fc CD.LTD. 16-17 NEW BRIDGE ST.E.C.4 PHONE: CENtral 6500 October 19. 1945 E l e c t r ic a l R e v ie w (Supplem ent) 81 ELECTRICAL a p p l i a n c e s The reputation acquired in nearly half a century’s dili gent labour is no small asset. W e prize It too highly g j& A 'produce any appliance which is not a credit to our name. In fact, the upholding of your esteem is the foundation of our KangTey Bridge Road , Lower Sydenham MICRO-LATHES MODERN SMALL PRECISION BENCH LATHES for WATCH, CLOCK AND INSTRUMENT WORK METER TEST ROOM AND REPAIR WORK ETC. We are always ready to advise upon the adaptation of Pultra Lathes to meet special requirements. Purchase restrictions are now lifted and we can supply. W rite for Catalogue CA4. Also Grinding and Milling Catalogue CA5/5 Sharpening Small Circular Saws on Pultra Micro Lathe utilising Milling and Grinding Attachment VII. m a n y o t h e r accessories available PULTRA LTD. 24.GRAVELLANE, SALFORD 3. MANCHESTER 8 2 (Supplement) E l e c t r i c a l R e v ie w O ctober 19, 1945 F ngines&FlectricsItd. SUDS PUMPS ITS THE Used on British and American Machine Tools, eithgr submersible or flanged design. Types:—EE.l, 2, and 4. C apacity :—F ro m 7 to 38 galls, perm in.at 6-ft. head. ' THAT LOCK/ Submersible Flanged AUTOMATIC H SUMP PUMP T o deal with M o to r is in acco rd flooding in base- ance w ith B.S S. ments, boiler 170/1939 and rated houses,cable to ensure continu trenches, etc. ous and reliable service. Installation : Is extremely simple. Only necessary to connect pump to delivery pipe, plug motor to nearest socket. ENGINES & ELECTRICS Factors and Dealers Enquiries to Wm. Clark (Spare Parts) 3, ST. JAMES SQUARE • LONDON • SWI Ltd., Nobby House. Elgin Avenue, London, W.9 ' e a s t s ' this Company has been engaged in the production of Pressings, Stamp ings, Spinnings. Sheet Metal Work. Capstan and Automatic Work for the LIGHT ENGINEERING INDUSTRIES A.C. Fully approved A I D. D.C. UNIVERSAL p RESS ING S 44 F i t AC M © ” s T A M PI NG S FRACTIONAL H.P. MOTORS F or Every Purpose s P I N N I NG S Delivery of urgent priority orders as follows :— I ISOth— I 30th h.p...... 5-6 w eeks I 20th— I/8th h. p. 6-7 w eeks Hasset & Harper LhJ 6-250 vo lts REGENT PLACE, BIRMINGHAM, 1 On M.O.S., Admiralty and M.A.P. Lists fRACTIONAI H.P. MOTORS 1TD. ROOKERY WAY, HENDON, N.W.9 COLINDALE 8022-3 RP.588D October 19, 1945 E l e c t r ic a l R e v ie w (Supplement) 83 V/BRRTORS • TRRRSFORMERS • SWITCHES • COILS -All steel construction— even ‘Stratosil Sealed’ to the rivets — ensuring uni form expansion under ex f o r E F F I [ I E n I V tremes of temperature. - Reed driving coil— wound on Wearite ‘/Stratosil Sealed" Vibrators a bakelite moulded bobbin to operate efficiently and wwh the utmost meet all climatic conditions. reliability in all situations irrespective Metal can, sponge rubber lined of climatic conditions. They embody — Acoustically and electrically shielding the Vibrator. many features exclusive to this type of Drivingcontact of non-tarnish- component and are available just now able precious metal — ensuring only for purposes directly connected starting under the lightest of pressures and voltages. with the war effort. Contacts ground almost to optical limits. Stack assembly. Mica and 5 TRDT0 SIL steel only are used. Base sealed by the W EARITE S e a le d VIBRATORS STRATOSIL process. Switch on to VECTAIRS In the living room of the newer houses warmth should be uniform, everywhere— it should not be necessary to crowd round the fire, or risk chills w hen being aw ay from it. And in addition to this s p re a d of warmth, there should be constant air circulation to maintain a healthy atmo sphere. N o te how a da p ta b le to design Vectairs a re — an exclusive advantage. In this bedroom the wall space saved was important. Send for Booklet EV/9. BRITISH TRANE CO. ETD., designers and manufacturers of Electric Vectairs, will be pleased to confer with engineers on the better Electrical heating of the newer homes.—Write to : Vectair House, 52 Clerkenwell Close, London, E.C.i, or phone Clerkenwell 6864 or 3826 84 ( Supplement) Electrical Review October 19, 1945 Turned Parts and DAVIS &TIMMINS L-° ; made to order. Head Office: BILLET ROAD - WALTHAMSTOW LONDON ■ E.I7 ries invited. Telephone: Larktwood 2313 (si* lines) BATTERY CHARGERS T R IC K LE CHARGERS Trouble-free Chargers fitted with selenium all-metal rectifi cation. Thirty years’experience behind every Runbaken pro duct. Good allowance on your old charger. ENGRAVED BRASS, CAST BRASS AND ALUMINIUM, ENAMELLED BRONZE AND CHEMICALLY ENGRAVED Booklet Q.5, giving useful informa PLATES OF ALL TYPES IN ALL LANGUAGES MANU tion and describing 12 Models, FACTURED BY THE EMPIRE’S LARGEST GENERAL on request. ENGRAVERS. SAMPLES AND QUOTATIONS ON REQUEST RunbakerO EDWARD H. THEW LIMITED. 1 Vi-m-ri rrrra y 11, Dean Street Newcastle, - on - Tyne. 25 AMP. TRIPLE-POLE REMOTE C O N T R O L ON-OFF SWITCH O F STR EE T LIGHTING MASTER s w / t c r . P/LOT W /R if. Other Productt: BATTERY. Auto m a tic This simple arrange F L U S H STARTERS ment in wide use 7 * é M O U N T IN G LIMIT SWITCHES / /. / St, CONTACTORS Ask for leaflet T Y P E r E M U OVERLOADS 104/ER MA/RS. British Klockner Switchgear Ltd. LONDEX • LTD Chertsey, Surrey, pao».. cl.»«, m u t. MANUFACTURERS OF RELAYS •S « « * 207 ANERIEY HOAD- LONDON S E 20 - FOR CLASSIFIED ADVERTISEMENTS SEE PAGE 45 INDEX TO ADVERTISERS — SEE PAGES 56 AND 58 October 19, 1945 E l e c t r ic a l R e v ie w iii MICA AND MICANITE BRAITHWAITE INSULATORS Pressed Steel Precision Gauged and Stamped T a n k s Condenser Plates BRAITHWAITE & GO. ENGINEERS, LTD. London Office (Temporary Address) : Radio Valve Spacers, etc. 45 King's House, Haymarket, London, S.W.I TAYLOR & PETTERS LTD. 3-11 WESTLAND PLACE, N.l Telephone : WHI 3993 Telegrams : Bromkirk-Phone Insulation Engineers Tel. : Clerk. 4105 HORIZONTAL OR VERTICAL MOUNTING FOR LARGE BSS CONDUIT BOX. WARDLE m m m TO Cl, Price List L587 on application WARDLE ENGINEERING CO. LTD. OLD TRAFFORD, MANCHESTER 16 LONDON 3 4 VICTORIA STREET, S W. I INSTRUMENT WIRES INSULATING MATERIALS EN A M ELLED , S IL K and COTTON covered Copper Wires, Single or Stranded, also Tinned, Paper, Asbestos and Plastic Westoftex covered. RESISTANCE W IR E S . LIT Z W IR E S . MICA, MICANITE and B A K E L IT E In all forms. Heat Resisting Boards. Canvaslte for Silent Gears. Oil Cloth, Silk and Paper. Slot Insulations. Insulating Varnishes. Varnished Fabric and Plastic Sleeving. Moulded and Machined Pieces, etc. W EST INSULATING COMPANY LTD. 2 Abbey Orchard Street, Westminster S.W. I A ‘RESERVOIR’ BUSH Whether it is used for oscillating movements, for large or small shafts or for high or low speeds, the ' Reservoil’ bush will bring an outstanding combination of advantages, as follows: A high capacity for oil, carried within the porous bush. Made to close tolerances; exceptional ease of fitting without heavy mechanical pressure. Extensive range of standard sizes. A M © E ( £ A N product THE MORGAN CRUCIBLE COMPANY, LTD., LONDON, S.W.ll Specialists in Powder Metallurgy since 1912 Printed in Great Britain at The Chapel R iver P ress, Andover, Hants, at Dorset House, Stamford Street, L~