Vol. CXXXIX. No. 3593 O C TO BER 4, 1946 9d. W E E K L Y

W E’RE ALL DOING O U R BEST!

fPOy-TECHNIKIl

Dad is not typical of the age of L.S.E. men or their equipment, but he has a craftsman’s touch and we need his help.

» L.S.E. quality must come first ; but while maintaining our standards we are fighting a not altogether unsuccess­ ful battle for increased production of :

ELECTRIC MOTORS for all industrial and marine applications. C O N T R O L GEAR. Electro-mechanical INSTRUM ENTS, etc.

LAURENCE, SCOTT & ELECTROMOTORS LTD. ii E l e c t r ic a l R e v ie w O ctober 4, 1946

BIG BEN

The clock tower of the Houses of Parliament contains the famous "Big Ben", an immense bell weighing I3£ tons

BIG CRYSE

MADE IN ENGLAND

F I FTY YEARS OF QUALITY £, SERVICE ■tfjtaw/is'J

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

CRYSELCO LIMITED, KEM PSTON WORKS, B E D FO R D E l e c t r ic a l R e v ie w

? * t y e y t

A maintenance man in an Electricity Department doesn't have much time for reflection in these days of shortage in materials and labour.

It’s always seemed to me as if Heatrae planned the design of their W a ter Heaters from MY point of view and to save my legs from repeated journeys.

My experience is that HEATRAE are so nearly breakdown - proof that they need minimum attention from me.

Being only human, I appreciate that point.

leaders in electric water heaters HEATRAE LTD. NORWICH GRAMS : HEATRAE, NORWICH PHONE : NORWICH 25131

“ WESTMINSTER” Brush Holders FOR WIRELESS AND SIM ILAR 125,000 A W I D E R A N G E O F CONNECTIONS SIZES IN STOCK SUPPLIED ROSS COURTNEY Tm MADE TO ! ASHBROOK] ROAD, LONDON; N.I9 A N Y MACE

Dynamos and Motors Rewound and Re-constructed. “ Partridge ” Pressure JAWS Detectors, “ Partridge ” Earthing Devices, M akers of all types of Switchgear, Photographic Arc Lamps, repetition products from the bar in all Electric Welders, Medical Arc Lamps. m e t a l s

TheWESTMINSTERENG.Co.Ltd. Victoria Road, Wlllesden Junction, N.W.IO M-Cl°nd REPETITION I ? Telephone : Telegrame : POOL LANE LANClCY • BIRMINGHAM Elgar 737t (* linee). “ Regency, Phone, London." Phone BROwtwell H|5(4lr«> BRChdwell 1757.

A E l e c t r ic a l R e v ie w October 4, 1946

g e n e r a l t y p e s . T v D e — C o n s tru c te d Sem i-EncloSed Y P v o ri to to-gW^o.deq (or ventilation all vital parts, and lor Power house at a large crude oil works. in Scotland showing from the machine room. 1800 K.W. (2250 K.V.A.) 3-phase . T v o e — Enclosed 50 cycle, 3,300 volt, 1,000 r.p.m . D uct V e n tila te Y attanged A.C. Generators fitted with self- contained air filters, driven by Stat° r ■ " cave a ts -or «*- with am intake ^ the geared steam turbines. nection to am foundations. The growing demand for geared steam Enclosed VentUate-F.r £ Self-contained A bodied turbine-driven A.C. Generators for con­ stantly increasing outputs has resulted in r r i - - - * uh developments in design of dominant importance.

Totally EnCJ”;£ coo,ers form an Four general types are now available to Type he machine, integral part ions (or cover the Increasing field of application, end eliminate exc and a choice may be made of alternative air ducts. basement air methods of cooling to suit the conditions most favourable to a given situation, thus ensuring reliable units of good efficiency and economy of operation.

jG EARED steam tu r b in e-driven

BRUCE PEEBLES &. CO. LTD., ENGINEERS, EDINBURGH October 4, 1946 E l e c t r ic a l R e v ie w 3

THE SMALLEST TRIPLE POLE SWITCHFUSE EMINENTLY SUITABLE FOR MACHINE TOOLS ft) RflDETTE. io Amperes.. °500 volts, catalogue N°Qi438

BILL SWITCHGEAR LTD MANCHESTER GLASGOW LONDON A.W.ZELLEY. ASTON LANE, PERRY BARR 73 GT PETER ST BELFAST BURTON-ON-TRENT WESTMINSTER S.W.I. BIRMINGWAM-20

PHONE BIRCHFIELDS 5011. CftAMS^BlLSW1TCH B'HAM

NIPHAN

WEATHERPROOF METAL - CLAD

Through PLUGS & SOCKETS Angle Socket Flange and Cover 5 to 300 A m p . 250 / 500 V o lt Angle Plug and Cover 3 and 4 Pole Earthed Type and 2 Pole. For Electric Lighting and Power, Transmission, Communication, Portable Tools, etc. Socket

Manufactured by SIMMONDS & STOKES LTD. VICTORIA HOUSE, SOUTHAMPTON ROW, LONDON, W.C.I HOLBORN M37 4 , 1946 4 E l e c t r ic a l R e v ie w October

Lucky fellow! He's just got a house. His copper-alloy key gives him entry to a house that, from the copper flashings on the roof right down to the copper damp-proof course, will be a healthy,- comfortable, convenient place to live in— because of copper. Good building, plumbing, heating and lighting depend so much on copper!

I t ’s m o r e t h a n l ik e l y there’s some job that copper or its alloys can do better for you. Think of the ‘plusses’ that make copper right for such a wide range of jobs-its resistance to corrosion, its thermal and electrical conductivity, its combination of toughness with ease of fabrication. If any of these qualities can serve your needs, if you have a problem to solve or an idea to develop, consult the Copper Development Association. A store of up-to-date information and practical advice is yours for the asking. LET COPPER CO-OPERATE

COPPER DEVELOPMENT ASSOCIATION. A non-trading organisation, maintained by the British Copper Industry to supply publications, information and advice, fice, to all users ol cupper Grand Buildings, Trafalgar Square, London, W.C.2 Enquiries to HENDALS HALL, DAOLETT. HERTS. HADLETT 5616 October 4, 1946 E l e c t r ic a l R e v ie w 5

SWITCHGEAR

Over 50 years experience and research

THE BRITISH THOMSON-HOUSTON COMPANY LIMITED. W1LLESDEN. ENGLAND, A3679 6 E l e c t r ic a l R e v ie w October 4, 1946

d these figures, the result

buyer wants ^ ^ r .p .m .

X — '50h'P | load- of tests on % uU ,oad. * 9 2 .5 .84

? 3-2 '9° motors Efficiency ••• .92 v-far\ana • • white

reliability and co t0 last, they manufaCtur.ng st painstalong

precision heir part be don • Z * * '• * ? r V t ~ » my *• i*"i ’------

W e illustrate an M.F.R. 60 slip-ring motor, 150 h.p., 960 r.p.m ., w ith drip-proof protection.

★ Branches at THE HJRLiND EN GINEER1N Manchester, Glasgow,

COMPANY LIMITE o o Birmingham, Bristol! Hull, Leeds, Newcastle, WORKS: ALLOA • SCOTLAND Nottingham, 8c Swansea. LONDON OFFICE: HARLAND HOUSE, 20 PARK ST.. W I 7 October 4, 1946 E l e c t r ic a l R e v ie w

All the better, if we may para­ phrase, to do your drilling with! The

K 7 v

Q n s q l i d a t e o P n e v M a t i c I ■ T 6 6 L (g) Cfl, LTD.

I 2 3 2 DAWES ROAD ' L O N D O N ' S. W 6. iiii..ii m h h —»i "i— im i ii in —n —irrif~m ni—i~r»— irm— i— h m t b i him

AIR COMPRESSORS • PNEUMATIC TOOLS ■ ELECTRICTOOLS DIESEL ENGINES . ■ VACUUM PUMPS • CONTRACTORS' EQUIPMENT CPU ROCK DRILLS ■ DIAMOND DRILLS • OIL WELL TOOLS E l e c t r ic a l R e v ie w October 4 , 1946

THE POCKET TESTOSCOPE Size of a Fountain Pen BURN I S CONDUIT

A convenient rapid fault-finding instrument for use on AC or DC Circuits I a«/

for use on 100-750 volts

FOR TESTING Burn Tested Super Steel Conduit, the outcome of a century’s SWITCHES OPEN CIRCUITS experience in the manufacture of LIVE CONDUCTORS LEAKAGES tubes, embodies the quality, consistency and finish vitally EARTHS INSULATION VALUES necessary to a good job. Every Tube tested, passed NEUTRAL WIRE POLARITY and branded to British Standard Specification 31, and the “Bee” CONTINUITY, ETC. on every tube is your security— and ours.

OL. ^»vvj^Lcu^vv

DRAKE & GORHAM GEORGE WHOLESALE LTD. 77 LQNG ACRE, LONDON,W.C.2 Telephone : TEMple Bar 3993 MANCHESTER: 29Piccadilly. BRIGHTON: 24Marlborough I M I T E Place. GLASGOW : 182 St. Vincent Street. Bristol ■ CITY TUBE AND CONDUIT MILLS 2-4 Church St., Temple. D U BLIN : 2 Church Lane, College SMETHWICK, BIRMINGHAM _ Midland Representative : Green Telephone : Smethwick I S I I (5 lines) W. T. BOWER, 184 Jockey Road, Sutton Coldfield London: 70 Finsbury Pavement, E.C.2 Liverpool: Caledonian Bldgs.. 14 Tithebarn St. 2

dm 1294 October 4, 1946 E l e c t r ic a l R e v ie w 9

COUPLING BOXES for unit assembly of all cable coupling combinations

B.I. Callender’s Mining Type Coupling Boxes provide a means of making the cable system as readily transportable as the operating machinery. Extensions, withdrawals and repairs can be effected with minimum expenditure of time and material. Colliery electrical systems can be standard­ ised in regard to cable lengths and sizes, with complete interchangeability of components. Jointing can, if desired, be carried out on the surface, under best possible conditions. For working pressures up to and including 3,300v.

W RITE FOR FULL / ^»1 0 T m1NES DEPARTMENT RARtYc U l Í rS or6 QUOTE \ F | P / ^ REFERENCE N.S.M.10. \| Lb I /

BRITISH INSULATED CALLENDER’S CABLES LIMITED NORFOLK HOUSE, NORFOLK STREET, LONDON W.C.2 1 0 E l e c t r ic a l R e v ie w O ctober 4 , 1946

ALTERNATORS 25 kVA to 2,500 kVA Pedestal Bearing Series

00256/844«

T HE extensive experience which the Many types of Alternators are available Company possesses in the con­ struction of plant for electric generation suited for drive by all classes of prime is embodied in the design and construc­ movers. tion of “ BRUSH ” Alternators. The important constructional features are The outstanding feature of these set out in publication ER1B.226—u>nte machines is the high efficiency of opera­ tor i/our copy to-day mentioning the size tion characterised by low internal losses. of machine in which you are interested.

THE BRUSH ELECTRICAL ENGINEERING CO. LTD. LOUGHBOROUGH, ENGLAND 8.64 TURBO-GENERATORS. TRANSFORMERS. E.H.T. and M T SWITCHGEAR and D.C. MOTORS and GENERATORS. BATTERY ELECTRIC VEHICLES 3 TRUCKS. TRACTION EQUIPMENT, B U I , COACH BODIES

BRANCHES : London, Manchester, Leeds, Birmingham. Newcastle, Glasgow, Cardiff, Bath Belfast D bli October 4, 1946 Electrical Review 11

KILOVOLTS

»•V. IfcWCATO«

liv e s O f. M SN

AR£PR£CiO Ui

This electrostatic device provides a positive means of finally verifying whether conductors may be worked on with safety.

F o r Systems up to ll k V . Model No. 1. Two ranges 0-5 kV, and 0-10 kV. (voltage to earth).

ForSystemsupto33k V . Model No,. 2. Two ranges 0-10 kV. and 0-20 kV. (voltage to earth). Can be used tor ** Phasing-o ut"

^ (MARSHALL &. FORREST) FERRANTI LTD., Hollinwood, Lancs. London Office: Kern House, Kingsway, W.C.2, 12 E l e c t r ic a l R e v ie w October 4, 1946 EXAMPLE OF T T ENTERPRISE

(one million volt positive discharge rising to peak value in 0.9 microseconds and falling to half value in 50 microseconds) motion picture of a SURGE

The “ real life ” graph that an oscillogram gives— a continuous, m oving picture of what is happening under given conditions—provides invaluable data. In our modern and well equipped High Voltage Testing Laboratory at Stoke, nothing is left undone to provide you with the best. Whether in giant H.T. insulators or the smallest die-pressed parts, you can rely on T.T. being always “ one jump ahead.”

e : ; t ' leaders in electrical porcelain

H. T. & L. T. INSULATORS, DIE PRESSINGS, LOW LOSS CERAMICS

HEAD OFFICE : EASTWOOD, HANLEY, STAFFS LONDON : 125 HIGH HOLbORN, W .C I Factories at Hanley, Stone and Longton, Staffs. Telephone : Holborn 1951-52 and Stoke-on-Trent 5272-4. October 4 , 1946 E l e c t r ic a l R ev ie w 13

M0T0B3

BIRMINGHAM 6

HIGGS large alternating current machines up to 600 H.P. are the successful outcome of extensive research and ex­ periment in design, and are produced individually by a highly specialized plant. Maximum efficiency and reliability in performance is thus ensured.

Belfast, Birmingham, Bristol, Dundee, Glasgow, London, Manchester, Nottingham, Peterborough, Sheffield, Wolverhampton. 14 E l e c t r ic a l R e v ie w October 4 , 1946

FLAMEPR EQUIPMENT by “ Walsall’' means goodbye to the dangers of vapour ignition, in Petroleum, Cellulose, Paint and similar works. Furthermore, “Walsall“ offer a comprehensive range

Remember: " Walsall ” Flameproof Equipment is thoroughly tested and Certified by the Ministry of Fuel and Power October 4, 1946 E l e c t r ic a l R e v ie w PLANT MOTORISATION USING 'ENGLISH ELECTROMOTORS AND OVERHEAD BUS-BAR SYSTEM

View in a factory containing 105 belt driven machine tools.

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

WRITE FOR YOUR COPY to Fusegear Dept. STAFFORD. THE ENGLISH ELECTRIC COMPANY LIMITED London Office: QUEEN'S HOUSE, KINGSWAY, LONDON, W.C.2 W O R K S : STAFFORD - PRESTON - RUGBY - BRADFORD - LIVERPOOL E l e c t r ic a l R e v ie w October 4, 1946 16

ROTARY STRAINERS for CLEANSING CONDENSER CIRCULATING WATER

Entirely automatic and self cleaning.

Completely enclosed. Airtight system maintained. Made in various sizes with capacities from 100,000 to 3,500,000 gallons per hour.

UJMrAJNY LIMITED

Phone: G rim s: 1373 (3 lines) BOLTON ' HICK, BOLTON ’ AD49 C October 4, 1946 E l e c t r i c a l R e v i e w TRANSFORMERS

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

A t 18 E l e c t r ic a l R e v ie w O ctober A, 1946

CONSUMER'S SERVICE UNIT W.T.HENLEYS TELEGRAPH WORKS CO. LTD. 51-53 HATTON G A R 0 E N • L 0 N D 0 N October 4 , 1946 E l e c t r ic a l R e v ie w 19

F r o m the world - famous Terry factory come steel clips, bronze clips, stainless clips, big clips, little clips, wide clips, narrow clips — in fact clips in every con­ ceivable shape and size. illustrated here are two of our stock p atterns, 8o a n d 8i, made in a range of sizes to grip from { in. to in. Maybe a clip of special shape would be necessary for the job you have in mind. Well, we can help you because we make clips for hundreds of uses. We can make to print or specifica­ tion, or our Research Department will design for you. Our knowledge of clips has advanced side by side with o ur 9 1 years’ spring-making experience, and we should like 10 send you our catalogue.

Soli Makers: HERBERT TERRY & SONS LTD., REDDITCH LONDON MANCHESTER BIRMINGHAM E l e c t r ic a l R e v ie w October 4, 1946

REVERSING & “OFF” TUMBLER SWITCH 3 A. at 400 V. and 5 A. at 250 V.

WM

A C. SINGLE-PHASE /W ith CentrifagaT* D.C. SERIES V Starting Switch ) No.'20150 COMPOUND WOUND

3-WIRE 2-PHASE A.C. THREE-PHASE D.C. SHUNT D C. SERIES

A. P. LTJNDBERG & SONS, LTD., 491 403 LIVERPOOL RD., HOLLOWAY, LONDON, N.7

BE INDEPENDENT OF PAINT

The development of Metal powders during the war years has resulted in spraying by the Schori process, of all kinds o f metalhcs and non-metallics, with the ease and speed of paint spraying. Base metals, such as steel, iron, etc., woodwork, stone, plaster, can be given decorative effects of copper, bronze, aluminium and many plastics, PAINT whilst at the same time being protected against corrosion and decay. The Schori powder process bonds all metallics and non-metallics to the Ç ,\jT le Repotter Chr°nic . - Eoropci t w f l W S S ÿ r . PROTECT AND DECORATE parent surface, thus providing a covering that will not chip, crack or so be B» “i \ flake ; a surface that will last indefinitely, thus reducing costly repetitive labour charges, and expensive renewal of protective coverings. Zinc, lead, aluminium, synthetic rubber or polythene, to name a few of the fifty odd Schori finishes, are in greatest demand for protection iS&M Tsî* *e against the elements and acids. Decorative finishes in many colours are obtained by such plastics as Thiokol, polymerized shellac, ebonite,

STr supp"es °urta>'fuJfio r ve, WITH A BONDED FINISH BY

sulphur, etc., all of which, because they are applied in powder form without A Zinc sprayed surface forms a kvi^ce solvents, can be sprayed to any thickness. perfect key for painting, prevents rust .vork ‘ creeping under the surface, and increases the hje of paint tenfold. Approved by the \ essewttiaV Admiralty, War Office, Crown Agents, etc. Licensees throughout the Country.

SCHORI METALLISING PROCESS LTD.. BRENT CRESCENT. NORTH CIRCULAR ROAD. LONDON. N.W.IO ph«n«t ELGAR 739) October 4 , 1946 E l e c t r ic a l R e v ie w 21

llnophrynt arborifer— is bne of the many species of fishes known as Angler fish, which, by movements of but it’s easier to say a lure on the head or appendages around the m o u th .e n tice o th e r fishes within their reach These deep sea habitants are so constructed that once they have seized a fish they cannot release it. Their long, sharp teeth, depressible inwards, hold the victim ENFIELD until, tired by Its struggles it is even­ tually swallowed They are able to FOR ALL CABLES UP TO 132 kV swallow fishes larger than themselves, and specimens, extended like PAPER-RUBBER • P-V-C. balloons, have been found, alive but helpless, at the surface of the ocean to which they have been brought by the efforts of the victim before It was completely engulfed. Length approximately 3 Inches. Avv Ma t e r ia l t o ENFIELD CABLES LIMITED, BRIMSDOWN, MIDDLESEX. Works : Telephone'. Howard 2661 London Offices: Telephone: Holborn059l E l e c t r ic a l R e v ie w October 4, 1946 2 2

The complete, up-to-date guide f u s i n i j to telephony and telegraphy f a c i l i t i e s A Handbook of Telecommunication (Telephony and Telegraphy over Wires)

By B e r t r a m S. C o h e n , o .b .e ., m .i .e .e ., f . i n s t .p . Edited by F. G. C . B a l d w in , o .b .e ., m .i .e .e . T his new book by a well- known international authority is of supreme importance to Post Office engineers and students. It includes particulars of the latest technical developments. 30/- net. The standard textbook on manual systems of telephony Telephony, Vol. I (.Manual Switching System and Line Plant)

By T . E. H e r b e r t , m . i .e .e ., and W. S. SIMPLE RE-FUSING P r o c t e r , a .m . i .e .e . An exhaustive guide to the systems of manual telephony in current use, and for many years the standard authority. C V E N if you happen to be a plumber, sans Second Edition. 1,200 pages. 25/- net. ^•tools, sans mate, sans everything and Pitman, Parker St., Kingszuay, London, W.C .2 miles from anywhere, you can re-fuse the new SLY D LO K FUSE from the coil of spare fuse-wire in the holder. Fingers and thumbs are the only tools HEAVY DUTY necessary, in fact you can’t use any others. P. & B. Insulating Tape is extensively used where rugged ‘ toughness’ is essen­ The same applies if you wish to fit an H.R.C. tial— for motor leads, trolley poles, cartridge. No need to send and wait for wrapping machine cables in mines and for a variety of purposes in shipbuilding. another fuseholder. Providing you have a standard cartridge and two hands the rest is simplicity simplified to the nth degree. LIFE... Exclusive to the New Proof against water and seawater and the fumes of acid and alkalis, P. & B. Tape retains its adhesiveness and provides per­ manent resistance to mechanical damage. Supplied in rolls from width upwards. W r it e for samples and prices. YD K THE RUBEROID COMPANY LTD. 19 93 Commonwealth House, NewOxford St. London, W .C. I. THE FUSE YOU WILL HIGH RESISTANCE EVENTUALLY USE

FtW AF.D & CO. LTD M Sharston Road, Wythenshawe 1 1 Manchester, INSULATING TAPES dm. E W l A 11U IIE It 0 1 1) 1*1101) I) Cl October 4 , 1946 E l e c t r ic a l R e v ie w 2 3

l e t S tREGISTERED n J fk TRADE tr MARK Q RECTIFY YOUR AC.-D.C. PROBLEMS

HIGH OVERLOAD CAPACITY

SHALL SIZE AND WEIGHT

WIDE RANGE OF WORKING TEMPERATURE

SMALL TEMPERATURE/RESISTANCE VARIATION

m u r R m iârèm à ______SELENIUM R. E C T. I F I E R S Standard Telephones and Cables Limited (RECTIFIER DIVISION) OAKLEIGH ROADp NEW SOUTHGATE, LONDON, N.ll Telephone : ENTerprise 1234. Telegrams : “Essteecee, Teles, London.” E l e c t r ic a l R e v ie w

ONE : WATERLOO SS02-3 October 4, 1946 E l e c t r ic a l R e v ie w 2 5 WELDING EQUIPMENTS b/

ARC WELDING MACHINES ATOMIC HYDROGEN SETS SPOT WELDERS IMETROVICK PROJECTION WELDERS SEAM WELDERS BUTT WELDERS FLASH BUTT WELDERS and also ARC WELDING ELECTRODES

M TO igN 7 r « , ELECTRICAL- -- "CO. LTD. ' / , € t n a c h i n * TRAFFORD PARK - MANCHESTER 17. 'Me el-ect*40

k\nM £TRO \JlCK 2 6 E l e c t r ic a l R e v ie w October 4, 1946

L o n y Recently at a County cricket ground th batsmen discovered they had been running long runs — 24 yards instead of 22 yards

Long Runs do not worry EDGAR ALLEN 5 DOUBLE SIX STEEL. 300,000 to 500,000 blanks o f high silicon, abrasive lamination material have been obtained without a grind from DOUBLE S IX DIE STEEL. For long runs, severe service and intricate sections, use this highly alloyed non-distorting super die steel D O U B L E S I X SOJM-mSTOItTIlVG

■jçWritefor Special Alloy EDGAR ALLEN A CO, LIMITED. Tool Steels Booklet. IMPERIAL STEEL WORKS!-SHEFFIELD.9

Moulded Plastic HANDWHEELS HANDLES, KNOBS for Industrial & Domestic Equipment. RANGE OF PATTERNS AND SIZES. VARIOUS COLOURS.

For instrument work, domestic and nW Strlc, apf arJltus and Power control plant. Standard switches available or THE designed to any individual requirement RAY ENGINEERING Write for catalogue or technical advice. C O . LTD., SO U T H M E A D , BRISTOL THE MERCURY SWITCH MANUFACTURING CO LTD Specialists in Precision Mouldings ------WEST DRAYTON : MIDDLESEX. for nearly 20 years. October 4, 1946 E l e c t r ic a l R ev ie w 2 7

US ket gros, ad bain, lead o/5

ic Aw U ckgea/c grew * on tne&d EEII If M.E.M. equipment could be produced without labour or materials, the

present heavy demand could be met without delay. None the less, every effort * is being made to increase output in spite of shortages, con­ AND SIZE IRS. trols and restrictions. As fast as the M.E.M. factory can

turn out the goods, supplies are being rushed to the whole­

salers. So keep in touch with your wholesaler and he will

see that you are supplied with the least possible delay.

MIDLAND ELECTRIC MANUFACTURING CO. LTD., TYSELEY, BIRMINGHAM, 11

SWITCH, FUSE AND MOTOR CONTROL GEAR, ELECTRIC FIRES AND LOCALISED LICHTINC EQUIPMENT London Showrooms & Stores ; 21-22 Ra.hbone Place, W.1 : Manchester Showrooms & Stores: 48-50 Chapel St., Salford. 3 October 4, 1946 E l e c t r ic a l R e v ie w 2 8

M la a Registered Trade Mark brass m o u l d e d a n d ^ r u b b e r b u s h e s

M Revelation in Revolution PROMPT D E L I V E ' R Y This report from one of the biggest N ut and Bolt Manu­ facturers in the world is METWAY INDUSTRIES typical of the many in our K ing Street. Brighton, I, Sussex. ’Phono : Brighton 4456 possession, the originals of which are always available for inspection if desired.

IT IS PR O O F PO SITIVE once again that the Macrome tool- toughening process will, and does, give an extraordinary measure of increased produc­ tion. W e therefore offer you the following economies :— (1) Higher output. (2) Reduced production cost p e r u n it. (3) Reduced outlay on tools.

These savings can be obtained quite simply, in two ways :— 1. When new tools are re­ quired we can supply your full requirements already Macrome t r e a t e d . 2. W e can treat your own tools.

W rite to us for details. MACROME TtaTouqiittTod) U / t a l Ú ú l d

MACROME LTD. (dept. C.8) ALCESTER WARWICKSHIRE

WORKS : ENFIELD, MIDDLESEX ^ E.R.4I

October 4, 1946 E l e c t r ic a l R e v ie w 2 9

Illustration is of N.C.S. “ Ideal ” Power Factor Meter, Round Switchboard Pattern, to B.S. Specification, 360 deg. scale.

Independent of current, voltage frequency or temperature varia­ tions met with in commercial practice. Low voltampere consumption. Supplied for single phase and polyphase, balanced or unbalanced loads. Portable Patterns also available. When instruments are required for balanced load systems they can be arranged to operate from one current transformer if desired. N.C.S. PR O D U C T S include all types of Nalder-Lipman Patents. Measuring Instruments, Indicating or Recording, Switchboard or Portable. The up-to-date design, Also Protective Relays, Synchronisers, scientific accuracy and Circuit Breakers, Earth Leakage Trips, practical efficiency of all instruments sold under etc. Every Unit is designed for the N.C.S. Trade Mark maximum o p e r a t in g efficiency, guarantee the user’s reliability and durability, prices being satisfaction. competitive without sacrifice of quality.

Quotations on request NALDER BROS. & THOMPSON LTD. c,„DALSTON LANE WORKS, LONDON. E.8 « Ä i * O c to b tr* . 1946 3 0 E l e c t r ic a l R e v ie w

t’s a healthy sign The registered Trade M a r k on A shley Elec- to have a strong trica| Accessories is a g u a r a n t e e o i reliability a n d of quality s e c o n d Savings Group to n o n e .

It is regretted that supplies are still far short of customers re­ quirements, but output is being distributed in strict fairness to all.

As the raw material situation improves, delays and shortages will be eliminated.

ASHLEY ACCESSORIES L- When so many firms are unsettled by staff ULVERSTON • LANCASHIRE changes and reconversion,vigorous Savings Groups can do a lot to foster good feeling, and help newcomers to settle down—besides being the simple and straightforward way of saving, for everybody in industry. It needs TUMBLER SWITCHES by a strong lead from managements, and the right individuals running things, to make group saving a real success. Where this happens, the nation, the firm, and the em-. ployee all benefit. Have you done all you can to back up your group ? ARROW New groups New members If you have no Staff If you have a Savings Q U IC K M AKE Savings Group, will you Group, will you do all get one started right you can to encourage the A N D BREAK away? Every place of Staff to join ? — ‘ every employment should em ployee a group m em ­ have its own Group. ber’ should be the aim. 30 amp. Facilitie s Savings clubs Experience shows that These are the ideal way Double Pole the fullest facilities in­ of saving for holidays, duce the highestSavings. Christm as or other 60 amp. Ask your Local Savings special occasions. Clubs Committee or Assistant are popular, easy to run Commissioncrfor details and need not interfere Double Po le of the various schemes. with your Savings Group Information, equipment and publicity material are provided free of charge — apply to your Local Savings Committee or to the Natiotial Savings Committee, Ensure the reliability of your products by the Sanctuary Buildings, Westminster, S . W . i selection of a switch of PROVEN efficiency. There is built into ARROW switches something It’s easier to save in a you'll not find elsewhere . . . a more scientific design . . . a more positive action . . . greater accuracy in detail and increased durability under STAFF SAVINGS GROUP severe operating conditions \ ARROW ELECTRIC SW ITCHES LIMITED Issued by the National Savings Committee Hanger Lane, London, W.5 October 4 , 1946 E l e c t r ic a l R e v ie w 31

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

One man with the Eleco contact gear can service 6 fittings in the time 2 or more men with a tower ladder can service 1. And it’s safer, too!

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

ENGINEERING & LIG

DEPT. W.S., SPHERE WORKS, ST. ALBANS, HERTS. PHONE: 2258/9 3 2 E l e c t r ic a l R e v ie w October 4 , 1946

“LINAPEX” varnished GLASS PRODUCTS FABRICS & TAPES

Build smaller and more efficient motors by using

“ Linapex ” varnished glass fabrics and tapes. They

are specially designed to resist high voltage at

elevated temperatures.

We also manufacture INSULATING AND OILED FABRICS FOR CABLE W ORK. SWITCHBOARD RUBBER MATS. A N D ELECTRICIANS’ RUBBER GLOVES

IO C O LTD. Anniesland GLASGOW

TRANSFORMERS

Robust construction, liberal internal specifica­ tions and specially developed hermeticsealing ensure efficient operation at constant load under extreme tropical conditions. Sealed against humidity, destruction by termites and other pests, these Transformers can now be supplied to meet your particular require­ ments. W rite to us for full particulars and specifications.

W. ANDREW BRYCE & CO. LTD. SHENLEY ROAD, BOREHAM WOOD, HERTS. Tel: ELStree 1875 & 1117 October 4, 1946 Electrical R e v ie w 3 3

^ 0 1 U )IN g

v E q u i p m e n t

The illustration sh o w s the 3 o o -a m p e r e TWIN GENERATOR , IN REGULAR DEMAND

OTHER TYPES AND SIZES ARE AVAILABLE

HEB BURN ON-TYNE REYROLLE e n g l a n d 3 4 E l e c t r ic a l R e v ie w October 4, 1946

A sturdy silent run­ ning m otor for 200/240 A.C. consuming 0*15 a m p s and weighing IJ lbs. Id ea l for driving axial flow fans and light mechanisms. High ‘effi­ ciency, good starting torque. Available in variety of mountings. Write for fully descriptive folder S.P.M .

(WOODTURNERS) LT.° ENGINEERING COMPANY LIMITED CROSS HILLS KEIGHLEY YORKS COMMERCE WAV' PURLEY WAV CROYDON TELEPHONE: CRO SS H ILLS 312-3 Telephone: CROYDON 4I25'8 Telecoms:SYNCROY,CROYDON TELECRAMS 'TURNWOOD: c r o s s h il l s

C O - A X I A L PLUGS AND SOCKETS

-no loose parts to

cable cut to your own

SOLDERING TAG INSULATING WASHER SHOULDERED WASHER PLUG CONTACT C. S P R IN G PLUG BO DY RETAINING SPRING C. S P R IN G SOCKET SHELL RETAINING SHOULDERS SOCKET CONTACT INNER CONDUCTOR — 1/ 022" COPPER W IRE CORE-ALKATHENE THREAD BOUND O U T E R C O N D U C T O R — BRAID TINNED COPPER WIRE PROTECTIVE SHEATH - VINYL RESIN

RADIO WORKS CAMBRIDGE THE HARBORO RUBBER CO. LTD. MARKET HARBOROUGH Electrical Review, October 4 , 1946 ON LOAD TAP CHANGING

1946 VERSION A built-in davit supports the tap changer cover. o This does away with cumbersome sheer legs and Here is a new version of the well- lifting tackle. proved B.E.T. on-load tap changing transformer. It has all The local control station is easily accessible and is these new features to ensure e so well insulated that it can be used in any weather. greater reliability and ease of operation and maintenance : - An isolating switeh provides complete isolation 0 of the power unit from the supply.

In addition to the tap change counter there is a o maximum minimum indicator which can be read and reset through a window in the casting.

A new type cable bo* avoids spreading the cables 0 across the tubes and has a suspension system relieving the porcelains of undue strain.

The cable box is mounted on a horizontal discon­ necting chamber which gives easy access to the disconnecting links.

The British Electric Transformer Company- Limited

dation with CROMPTON PARKINSON LIMITED

BANKMENT, LONDON W r -> E l e c t r ic a l R e v ie w October 4,

■

Keeping ELECTRICITY

in its PROPER pla c

MICA PAXOLIN Raw mica, block and splittings of Paxolin is our registered trade name all grades can be supplied, and our for our laminated plastics of the factory at Walthamstow is equipped phenolic class. They are manu­ with modern plant for the rapid and factured in various grades to suit economic production of cut, gauged, specific applications and supplied in machined, or made-up mica in the the form of sheets, tubes, and form of condenser films, discs, cylinders. Paxolin insulation is plates, washers, commutator eminently suited for panels, bush­ separators, etc. ings, and insulators, and we are fully equipped to carry out all the MICANITE necessary machining and fabricating Micanite is built-up mica insulation operations. and is manufactured and supplied in every commercial form including KENUTUF MOULDINGS Commutator and Moulding Mica­ Kenutuf mouldings are available nite, Flexible Micanite, Mica Tape, injection-moulded from Polyvinyl Micafolium, Heat Resisting Micanite, Chloride. Commutator rings and tubes. EMPIRE MICOFLEX-DURATUBE Empire insulation covers a wide Micoflex-Duratube is the registered range of varnished cloths, silks, trade name of our tubes and sleev- woven glass, and papers, both black ings extruded in continuous lengths and yellow, supplied as sheet or as from Polyvinyl Chloride. There is a tapes both straight cut and bias. wide range of grades, sizes, and We also supply varnished cotton and colours. silk sleeving. THE MICANITE & INSULATORS CO. LTD. EMPIRE WORKS, BLACKHORSE LANE, LONDON, E. 17,

Makers of MICANITE (Built-up Mica Insulation). Fabri­ cated and Processed MICA, PAXOLIN (Synthetic-resin laminated sheets, rods, tubes and cylinders). High- voltage Bushings and Terminals for indoor and outdoor use. Em pire Varnished Insulating Cloths and Tapes and and all other forms of Electrical Insulation. Suppliers of 1 Vulcanised Fibre, Leatheroid, Presspahn, etc. Distri­ butors of Micoflex-Duratube Sleevings, Micoflex- Durasleeve (plastic covered flexible metal conduit) and Kenutuf Injection Mouldings (P.V.C.). October 4, 1946 E l e c t r ic a l R e v ie w 37

WESTINCHOUSE ECTIFIERS

I ne t-narging or Another example of equipment manufacturers not only recommending the Westinghouse metal rectifier for use with their equipment, but using it themselves MINERS’ LAMP Such is the faith of Oldham & Son Ltd., Denton that Westinghouse is used In their 1,000 Cap Lamp Installation at their works for demonstration and BATTERIES test purposes. In this Cap Lamp Installation, the miner inserts his own headpiece at the appropriate number corres­ from ponding to his check number, reversing the procedure when going down the pit. Oldhams will be pleased an A.C. SUPPLY to give you full details of the installation, and Westinghouse to solve your rectification problems. Westinghouse Brake & Signal Co. Ltd 82 YORK WAY, KING’S CROSS, N.l LECTRicAL Review O c t o b e r 4 , 1 9 4 6

THESE MARKS IDENTIFY ALL THAT IS BEST IN WINDING WIRES

INSULATED CONDUCTORS for Coils of all types

THE LONDON ELECTRIC WIRE COMPANY AND SMITHS LIMITED, LONDON, E.IO O ctober 4, 1946 Electrical Review 39

T his tim e9 ijentlem en91 yo t an ATLAS’

Atlas lamps preside at many a Board meeting . . . throwing light on important decisions . . . staying bright when speeches get dull! More and more responsible people are choosing Atlas lamps because engineers, electricians and those who take the trouble to check up on light values know that there is no better lamp. Every Atlas lamp is guaranteed to be made to strict B.S.I. specifica- tionand is tested at each stage of manufacture. Write for terms today. A COMPLETE LIGHTING SERVICE Our lighting engineers will supply planned with common sense and you with exactly the lighting you ‘eye-appeal’. We offer you a com­ need, exactly where you need it. We plete, individual lighting service. design and supply modern fittings, Why not get in touch? There is using new materials boldly, yet no obligation. ATLAS LAMPS for STAYING POWER Export enquiries welcomed

THORN ELECTRICAL INDUSTRIES LTD., 105-109 JUDD ST., LONDON, W.C.I. Tel. Euston 1183 NORTHERN BRANCH : STEVENSON SQUARE, MANCHESTER J. TEL. CENTRAL 3185 N.E. DEPOT: 46 SANDHILL, NEWCASTLE-ON-TYNE 1. TEL. NEWCASTLE 24068 40 E l e c t r ic a l R e v ie w October 4 , 1946

The new REVO Consumer’s Service Unit eliminates for ail time the old-fashioned and often unsightly methods of distributing and controlling the normal domestic electric supply. Easy and quick to install .... can be arranged to suit any space or position of service cable entry .... facilitates extensions .... ensures safety from shock by shielding of all internal metal parts .... single switch control of whole installation .... one compartment for all cartridge fuses, which are instantly replaceable without tools . . . . “ plug-in ” or alternative connections for most types of meters .... for 250 Volts A.C., 60 amperes.

Write for full particulars and prices

CONSUMER’S SERVICE UNIT

Patent No. 525624 and others pending

4 U K

4 2 E l e c t r ic a l R e v ie w October 4, 1946

W H I C H i s w h i c h : You KNOW,, I jt but do your customers \\ know ?

To follow the “ Safety First ” recommendation, make sure your electrical leads, whether to Domestic Appliances or to \ i \ \ Machine Tools, etc., are clearly defined.

“ Viskrings” simply slipped over the core-wires and/or the outer casing of the leads do the job and put an end to confusion or doubt. • No Tools required • No rubber used • Impervious to oil and petrol • Indelibly printed • Supplied in all colours as well as white • Self-fixing • Do not increase diameter of lead

for PERMANENT IDENTIFICATION OF ELECTRIC LEADS VISCOSE DEVELOPMENT CO. LTD. Woldham Road, Bromley, Kent. ’Phone: Ravensbourne 2641 October A, 1946 E l e c t r ic a l R e v ie w 43

‘The Ambush By G. D. Rowlandson

A p a r t from the fame of its salt springs, Droitwich ranks in history . with those localities which provided secret asylum for survivors of lost causes. At Hindlip Hall in its vicinity, Gunpowder Plot conspirators defied search for eight days, and, later, Westwood Hall was the hide-out of many a Royalist during the Commonwealth. To-day Droitwich has reversed its role — it has become informative; for there stands the great Regional Transmitter of the B.B.C. Altogether three Alton batteries have been installed at this station — two for trans­ mitter purposes, the third as a stand-by against generator failure. A notable tribute to Alton reliability. 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 ’

A io/45 4 4 E l e c t r ic a l R e v ie w October 4, 1946 % v V

■ »»i\V VW-. "'W'' P o l i c y o r \ s s r u v ' ' c ’" METROVICK

, rJ0.Kc ••>«"un";' PB 0 RELAY

.... For over-current and earth- " IflHHO* VS'» 1 ISHOI Vi fault protection. 1

W"'

CO.. LTD. W TRAFFORD PARK — MANCHESTER It G/H20I INCREASE PRODUCTION BY October 4, 1946 E l e c t r ic a l R ev ie w

HAND OPERATU OR AUTOMATIC

ON LOAD VOLTAGE REGULATOR

Britain’s new houses will need miles and miles of

RU BBER -IN SU LA TED and P.V.C. thermoplastic cables

T h ere’s over three quarters of a century's experience and research behind every inch of the miles of Siemens wires and cables which pour from the great factory at W oolw ich—cables and wires that helped to make Victory complete and are now helping on Britain's work of reconstruction. K'S 1 0 SIEMENS ELECTRIC LAMPS & SUPPLIES LTD., 38/39 UPPER THAMES STREET, LONDON, E.C 4 October 4 , 1946 46 E l e c t r ic a l R e v ie w Who gaye Vienna electric light opera?

Strangely enough, an Englishman—one o f the great pioneers of electricity who, in 1883, carried out the first installation in the Vienna Opera House. The same man who spread the benefits of electricity from coal mines to the Himalayas, from Tilbury Docks to Buckingham Palace. His name ? Colonel Crompton, founder of the firm of Crompton Parkinson Ltd. • This is the story of one of the earliest electric lighting installations—planned throughout by Crompton, just as many schemes with the most up-to-date lamps and lighting equipment are now planned by the team of technicians of the Crompton Lighting Service. (rompton LIGHTING EQ U I PM ENT

FOR THE LATEST IN LIGHTING

CROMPTON PARKINSON LIMITED, Electra House, Victoria Embankment, London, W.C.2

Telephone: Temple Bar 5 911 Tclcpiains: Crompark, t'elrand, London 4 7 October 4, 1946 E l e c t r ic a l R e v ie w

i FULLER Photograph by courtesy of Metaducts Ltd. Brentford

16 GAUGE

GALVANIZED k i 1 IRON H ex ELECTRICALLY BRONZE WELDED O r u It f a CYCLONE DUST EXTRACTOR ¡fa ta

at ail This is an interesting example fabricated in gal­ a s ! vanized iron sheet electrically bronze welded by the "Fuller Carbo-Flux process. Note the clean lines, :ejm the absence of distortion and the rust-proof welds.

Can we afford you any further information ?

FULLER ELECTRICAL & MNFG. CO. LTD. (Associated with Asea Electric Ltd.) Head Office : Fulbourne Road, Walthamstow, London, E.I7 Tel. Larkswood 2350 (10 lines). ’Grams : Fullmage, Telex, London Branches: MANCHESTER • GLASGOW . BIRMINGHAM Blackfriars 2238 Eaglesham 399 Kings Norton 1953

v mu

nt,Lxk m m October 4, 1946 48 E l e c t r ic a l R e v ie w

HEAVY INDUSTRIAL SWITCHGEAR

Power Distribution Boards

FOSTER TRANSFORMERS & SWITCHGEAR (INCORPORATING FOSTER ENGINEERING CQMPANY^^SOUT^MMBLEDQN. LONDON S

Lancashire D y n a m o » Crypto Ltd. Crypto Ltd. Associated Companies : Crypton Equipment Ltd. October 4, 1946 E l e c t r ic a l R e v ie w

• " 1

CRYPTON METAL RECTIFIER BATTERY CHARGERS

Crypfon Metal Rectifier Battery Chargers are built to highest standards of workmanship and finish. This, with the use of highest quality materials, ensures a stan­ dard of reliability and efficient performance which is unequalled.

PLEASE WRITE FOR FULLY ILLUSTRATED CATALOGUES.

NORTHERN OFFICE> LONDON OFFICE î ïK rnVPTON EQUIPMENT / i » - ¡ a S Ä i JManchester. S C r BRIDGWATER r 1dg W A TER SOMERSET SOMERsef L'D. LONOON'l0Ä S W1 lt/j ■ BLACKFRIAKb Telephone: BRIDGWATER 2614 ABBEV 2002 Associated Companies : Lancashire Dynamo d. Crypto Ltd., Crypto Ltd., Foster Trantformer« & Switchgear litt 5 0 E l e c t r ic a l R e v ie w O ctober 4 , 1946

• •

Hackbridge Transformers are giving sterling performance under the widest range of service conditions; in the tropical heat of East Africa, or the freezing cold of Northern Canada—and a thousand places in between. O ver a quarter century of specialised experience in transformer manufacture and a record of many millions of kVA of transformers in world-wide service provide a guarantee that every Hackbridge Transformer is right for its job.

HACKBRIDGE ELECTRIC CONSTRUCTION CO, LTD. • WALTON-ON-IHAWES ■ SURREY Telephone : Walton-on-Thames 760 (8 lines) Telegrams : "Electric, Walton-on-Thames'' October 4, 1946 E l e c t r ic a l R e v ie w 51

EARTHING IN SAFETY

with NEON INDICATION the new J. & P. oil immersed isolator gear an operator is given positive information—by three neon indication lamps—whether cables are alive from remote points or not. While the lamps glow, the cables are alive and it is unsafe to earth. When the lamps do not glow, the operator knows that he may safely open the gate interlock and switch over to earth, as shown in the second illustration. The neon lamps are operated by condenser elements wound into the three bakelised paper bushings on the cable side of the switch. The equipment illustrated is a ring main unit comprising Type “ A ” incoming isolators, with a Type “AG. 16” air insulated, metal- clad, vertical isolation circuit breaker unit. 52 E l e c t r ic a l R e v ie w October 4 , 1946

DISTRIBUTION SWITCHGEAR

HAMS HALL ‘B’ POWER STATION,

BIRMINGHAM . . . .

Ellison distribution switchboards are used in Hams Hall Power Station to control the lighting and medium voltage auxiliaries for the turbo-generators, the coal handling plant and the pump motors in the river-water pump­ G e o r g e E l l i s o n LIMITED ing station. BIRMINGHAM 22 B ENGLAND

Ellison switchboards can be made with any combination of circuit breakers of from 20 to 3,000 amps. 543 E l e c t r ic a l R e v ie w Managing Editor : October 4, 1946 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor Contents:— C. O. Brettelle, M.I.E.E. J. H. Cosens Page Page Editorial.—Trade with Russia 517 Building Licences . 539 Oil Refining 519 Forthcoming Events . 539 Views on the News 524 Design in Industry . 540 I.E.E. Sub-Centres 525 Commonwealth Engineers . 540 The House and Industry. By Commerce and Industry . 541 F. J. Erroll, M.A., A.M.I .E.E., Farm Supplies . 545 M.P...... 527 Amenity Preservation . . 545 Correspondence 529 Telecommunication Practice . 546 London J.E.A. 531 Electricity Supply . 547 Personal and Social 533 Recent Introductions . . 549 Russian Trade Prospects 536 Financial Section . 551 New Station at Brighton 536 New Patents . 554 I.M.E.A. Council in Dumfries 537 Contract Information . . 555 Molybdenum Steam Pipes 537 Classified Advertisements . 59 National Load Curve 538 Index to Advertisers . 78

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

There’s no corrosion of the connections in the Solon Electric Soldering Iron. Tucked neatly away at the end of the handle, the heat can’t get at them ! Efficient rubber Connections sleeve cord grip prevents sharp bending of the flexible. The heating elem ent is in s id e the copper bit—giving v h o u s e d o t . constant heat; no waste of current ; features that make Solon soldering quicker, cleaner, safer • (end of handle^ All Solon irons are supplied with 6 ft. of Henley 3-core flexible. Made for the - C M W P ' O M following standard voltages- the hear! 200/220, 230/250

Illustration shows standard 240 - watt model. Other types and sizes for various specialised jobs. SOLOh — - SOLDERING IRON for INDUSTRIAL USE

Made in England W. T. HENLEY’S TELEGRAPH WORKS CO. LTD. Engineering Dept. 51-53 Hatton Garden, London, E.C. I 54 Electrical R e v ie w October 4 ,1 9 4 6 POWER FACTOR METERS Single and Polyphase — Switchboard and Portable Patterns:—

EVERETT EDGCUMBE “ R o ta ry” Power Factor Meters possess the follow­ ing distinctive characteristics:—

0 The scale extends over the whole circumference of the dial. 0 They indicate “ Leading ” and “ Lagging ” power factor in both forward and reverse directions. 0 No moving coils, ligaments or brushes are used.

0 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 LO N D O N , N.W.9 Telephone: C O L IN D A L E 6045

Manufacturer, of all kinds of indicating and recording electrical instruments. Photometry expert) E l e c t r ic a l R e v ie w

THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXIX. No. 3593. OCTOBER 4, 1946 9d. WEEKLY

Trade with Russia Sir George N elson’s Views

^^IN C E the war ended exports from this expansion of industry. There is equally no country to Russia have dwindled to doubt as to the desire of industrialists here a very small figure. In the last published to take on this business. But how much Board of Trade returns (those for August) and how soon is not an easy thing to decide. no electrical exports to Russia were It is perhaps unfortunate that what the recorded. For the first eight months of Russians require most are just those items this year the total value of exports of that we ourselves stand in need of—power electrical goods, apparatus and machinery plant and heavy industrial equipment. At was £533,957, as compared with £6,740,542 present we are not in a position to dispose in the corresponding period of 1945. Ex­ of too much in the way of capital equip­ ports were still higher than in 1938, how­ ment lest we cripple our own productive ever. The position is not satisfactory either system . from our view as an exporting country or Nevertheless an effort has to be made from the wider consideration, of har­ to achieve some compromise between these monious relations between our two competing needs so that we may establish co u n tries. friendly relations with the Soviet Union as a contribution to world stability and peace. Anxious to do Business We have the consolation of knowing that Russia’s willingness to buy from us has the other important industrial nations are not been definitely established hitherto. at present no better able than ourselves to Now the conclusion of an Anglo-Russian undertake the supply of all that Russia trade treaty recently gives a gleam of needs. hope and this is fostered by the emphasis placed by Sir George Nelson upon the Arranging the Conditions anxiety of the Russians to do business with Questioned at a press conference, upon this country. Sir George went to Moscow his return from Moscow, Sir George Nelson recently, at the invitation of the Soviet said that his visit was exploratory; he did Government, purely in his capacity as a not go to Russia to secure orders. Before leading British industrialist with no actual business could be done a number of Governmental or other ties. He was questions would have to be further dis­ allowed to move about the country freely cussed, particularly prices, delivery and and to see for himself how much that conditions of contract. He saw no reason Russia had built up had been destroyed why we should be unable to meet the by the enemy and what steps were being Russians in these matters and during his taken to restore the country’s economic visit he was able to prepare the ground to and industrial life. some extent by impressing upon the There is no doubt that the opportunity Russians the need for consideration of our exists for us to help in a very large measure present difficulties. This should have some in this work of reconstruction and further value in helping them to adjust their 518 Electrical Review October 4 , 194

requirements according to our ability to from a comparatively slow break, especially meet them and prevent them from imposing of a current exceeding 1A , m ay still be conditions which are difficult or impossible dangerous. The Chief Inspector of Mines, to fulfil. With regard to payment, Sir Mr. J. R. Felton, points out that any risks George pointed out that Russia was can be minimized by avoiding the inter­ wealthy in resources and no difficulty need ruption of a circuit in air (e.g., bridging be anticipated in this direction. earth and pilot contacts of a socket for testing the operation of a remote-controlled D ifficulties in co ping switch), by careful maintenance of earth- Kilowatt with limited generating conductor continuity and (if they must be Deficiency capacity are not lessened used) of plug and socket couplers and by by the shifting of the times adequate ventilation. Before a circuit can of the peak. The national load curves be regarded as safe in all circumstances, reproduced on a later page reveal more some modifications will probably be than a seasonal change or the effect of a necessary in existing design and testing cheerless early autumn. The comparison pro ced u re. also reflects what are presumably changes in social and industrial economy. While I t is gratifying to editors the aggregate kW demand in September Production of engineering journals to was about 1,800 MW less than it was in Bulletin learn that the “ Production January, the effective plant capacity was and Engineering Bulletin ” down by over 2,000 MW—an amount that issued jointly by the Ministries of Produc­ corresponded approximately to the addi­ tion and Labour has ceased publication. tional plant being overhauled last month, While it may be true, as the Ministry of when more plant was incapacitated owing Labour claims, that it served a useful func­ to unsuitable fuel as well. The demand tion in the peculiar circumstances existing would have been higher but for the reduc­ in wartime, in peacetime the “ Bulletin ” tion in frequency, since it is affected either could only cut across the paths of an directly or as the square or as the cube of efficient technical press. Indeed the Min­ th e speed. istry recognizes this when it says:—“ It is felt that the wide resources of the technical S o m e trouble has been and trade press are fully capable, as in the Molybdenum caused in power stations past, of serving the best interests of Steel using steam at high tem­ industry.” Government publications can peratures during the past seldom win the regard and co-operation of couple of years as a result of the cracking readers which the technical press enjoys of piping made from 5 per cent molyb­ and will continue to enjoy with the denum steel. The factors responsible have promised help of the Ministry and other not yet been clearly identified, and the Departments concerned. E.R.A. Committee which has the matter T h e r e is justice in a in hand is unable, as reported in this issue, Applications complaint received from to make definite recommendations at this for an overseas reader that stage regarding the composition of the Appointments people in his position are steel. Decisions in regard to power stations handicapped in applying now being designed will, therefore, depend for appointments advertised in the very much on experience of the engineers Electrical Review (and other papers no responsible, having regard to individual doubt). This reader says that by the time service conditions. Since new stations will his copy arrives the date for the probably start as base-load stations they receipt of applications has passed or the would not immediately be subject to the variations in temperature that accompany time left is too short. It is probable that in many cases advertisers are in a hurry periodic running up and shutting down— to fill vacancies but there may be instances conditions that are particularly adverse. in which it is possible to give more time I n a remote-control cir- to applicants. Where this is so advertisers Dangerous cuit that has been certified might give a thought to men in overseas Sparking as “ intrinsically safe ” for countries, who may possess just the mines, the mainly inductive qualifications and experience which are spark from a rapid break does not ignite sought for, and extend the period for the fire damp. On the other hand a spark sending in of applications. October 4, 1946 E l e c t r ic a l R e v ie w 519 Oil Refining' Electrical Applications in Scottish Shale-Oil Industry

N this article we propose to deal with the a fractionating column at a point about one- I third and last major stage in the produc­ third of the way up the column from the base. tion of oil from shale, as it is carried out by Here the heated oil is “ flashed ” into its Scottish Oils, Ltd., following the articles, component parts as the result of the drop in “ Oil-Shale W inning” and " Distilling Oil,” the pressure of the vapours, etc., immediately which were published in the Electrical Review after they enter the tower. The lightest com­ of July 19th and August 23rd. The crude ponents of the oil, representing a very crude oil produced at the six crude-oil works spirit, are thus able to ascend the tower served with shale from the fourteen mines through bubble cups on the bubble trays, and and pits operated in the area is brought by to leave the tower through an overhead pipe rail tank cars to the central refinery at leading to water-cooled condensers in which Pumpherston, where it is first discharged from the spirit is reconverted to liquid form for the car tanks into a trough below ground and thence pumped into large stock tanks. At the initial stage the crude oil is almost solid because of its high wax content, and it is therefore heated, first in the tank cars by injecting steam into the tanks, and then in the stock tanks by means of internal steam coils with which these latter tanks are equipped. The crude oil is then pumped into a pipe- still which is a rectangular furnace shaped like a house and constructed of high-quality fire brick. The still roof and end walls are lined with alloy steel tubing in a continuous to and fro fashion, and through this tor­ tuous circuit the crude oil is pumped under pressure. The pipe-still furnace is fired with a low-grade by-product which is obtained from the oil processing,

In the fractionating column the heated oil is “ flashed” into its com­ ponent parts; pipe-still in foreground and con­ densers and control room at rear. The heavy residue oil from the fractionating column is pumped into the coking stills (left) transfer to other plants for subsequent treat­ ment. Components of higher gravity which cannot quite reach the and the temperature of the furnace is tower top are trapped on one or other of the maintained reasonably constant at 1,300 intermediate bubble trays, with the lighter deg F. oils on the upper trays. There are eighteen Oil leaves the pipe-still, largely in the form trays above the inlet point and the tower, and of a vapour at around 750 deg F, and enters it is only necessary to tap off selected trays to y

520 Electrical Review October 4 , 1946

Crude oil is brought by rail tank cars to the refinery at Pumpherston w h ich I get the oil of the particular specific gravity delta control, both the motors and the a n o th e i required. Near the top of the tower crude Metrovick starters being flameproof equip­ e x tra c ti Diesel oil is extracted, and further down ment. T h e o il near the middle of the column a heavier oil Heavy residue oil is pumped from the to a h containing crude liquid wax is withdrawn. column base batchwise into coking stills, liq u id The heaviest oil of all is taken from the cup­ each of which holds about 1,800 gallons. liq u id shaped base of the column and pumped away There are seventy-two of these in the installa­ p ro du ci to residue-oil coking stills. A group of three tion ; each consists of a mild-steel cylindrical o( am i centrifugal pumps serves to transfer the top tightly jointed to a hemispherical flanged o itho dc different grades of oil from the fractionating base of special cast iron. Each still sits over c o m p r i column to the various parts of the works for an oil-fired pot-shaped furnace, and a vapour densers pipe connects the top of T h e co the coking still to a d irectly water-cooled condenser. H .P ., 3 ! The liquid residue is V ic k s distilled off to complete m oto rs i dryness in about 24 i m ean s hours, leaving a solid faclor cc residue in the base of the still. This is very Oil and w; nearly pure carbon "and M ild In uchuien is used for smelting r‘lfi!trant I high-grade ores. The m otor-drlv condensed liquid dis­ comç tillate from the coking stills is pumped back to rejoin the fresh crude oil going into process. The coking stills are

Tilts group of three centrifugal pumps transfers the different grades of ejnptied every second oil from the fractionating column day, and they resume their coking cycle after further treatment. Each pump will handle the emptying operation. about 100 gallons per m inute against a 180-fl Reverting to the fractionating column, the head, and is directly driven by a 10-H.P. heavy oil cut containing the liquid wax Bruce Peebles squirrel-cage motor under star- is pum ped to a wax extraction unit from October 4. 1946 El e c t r ic al R e v ie w 521

collected and pumped off to storage. The crude wax is first treated with acid and alkali to remove certain impurities and is then further de-oiled by “ sweating ”—a process which involves slowly raising the temperature of the oil by a few degrees per hour—thus allowing the contained ofl to creep out of the wax. This is carried out in large stoves which are essentially vertical tubular heat exchangers, each containing about three thousand ¿-in. tubes. The heating medium is water which is itself steam heated under thermostatic control. The de-oiled wax—pure white in colour— is finally melted out by steam heating. The hot water circulates through the tubes during the process, and the wax remains outside the tubes in the vessel. This purified and de-oiled wax is subjected to a final filtration by passing it in liquid form down through specially- prepared Fullers earth in vertical cylindrical which the de-waxed oil is passed forward as filters. This absorbs all the discolouring another constituent of crude Diesel oil. This matter and entraps any particles of foreign extraction of the wax is effected very simply. matter. The liquid wax is ran into steel The oQ and wax mixture is primarily chilled trays and cooled ready for dispatch. This to a low temperature in tubular liquid-to- final transfer of the wax is effected by three liquid temperature exchanges, using cold pumps, each driven directly by a 6-H.P., liquid ammonia as the refrigerant, for the 1,450-r.p.m. Brace Peebles squirrel-cage production of which there is an installation motor with star-delta control. The oil which of ammonia refrigerating plant with the has been sweated out from the wax as described orthodox set-up of compressors, con­ densers and receivers. The compressors are directly driven by 115- H.P.. 3"5-r.p.m. Mct- Yiek synchronous motors which provide a means of power- factor correction for

Oil and »rax mixture is ch i I led in temperature exchangers supplied with refrigerant from II 5-H.P. motor - driven ammonia compressors the electrical installa­ tion generally. Chilling the oil causes the »ax content to assume crystalline form, and in the semi­ solid state the mixture is pumped into huge 530-plate horizontal extraction presses is sent as charging stock to cracking plants. working at 500 lb per sq in. After a period The crude spirit obtained from the top the presses become fully charged with crude of the distillation column is blended with a wax, having exuded all the oil which is spirit brought in from the cru de-oil works. 5 2 2 Ël.FOTRICAI, R f VIFW October 4 , 1946

This mixture of crude spirits is redistilled in from the wax, is charged to a cracking plant another pipe-still furnace and bubble-tower in which it is lightly cracked to produce more installation which produces motor spirit, motor spirit, more Diesel oil, coke and an solvent spirits and plasticising spirits for the unavoidable percentage of refinery gas. This rubber and allied industries. The residue gas is used for smoothing out the by-product from the distillation of the various spirit “ cuts ” is added to the crude Diesel oil ob­ tained from the crude- oil fractionation and to that sent back from the wax-extraction

Wax is further de-oiled by “ sweating ” in stoves; horizontal run-off tanks in fo re g ro u n d

unit. This is the principal process material in demand throughout the works, since finished Diesel oil is the “ bread and butter ” product of the refinery. The oil is first treated with acid and alkali to improve its colour and reduce fuel in the firing of the various pipe-still its impurities. It is then redistilled in a furnaces used throughout the processes. modern pipe-still and bubble tower unit so The operation of cracking differs from that as to produce the highest grade of Diesel- of distillation as carried out in the earlier engine oil. processes, in that cracking disrupts the The residue, along with the oil sweated out molecules and results in the production of different molecule groupings, some of which are much lighter and some much heavier than the molecules in the original oil. Cracking is always performed at a high temperature and generally at a high pressure, since this assists in breaking up the molecules. Distillation, on the other hand, merely separates various groups of like molecules from one another. The distillation process is carried out in the low-pressure fractionating columns at 10 lb per sq in. gauge, or less, while for cracking pressures varying from 150 to 2,000 lb per sq in. are employed. The cracking equipment therefore consists of heavy solid forged or fusion welded drums with very thick-wall seamless alloy tubing. On each cracking pipe still is a 20-H.P., 485- r.p.m. motor driven pump which keeps the oil in circulation in the pipe-still. It is directly coupled and has auto-transformer control. The motor operates in the open air. It will be seen that the major electrical application to the refinery processes is the driving of pumps and the transfer of the

Final transfer of the wax is by three 6-H.P. various liquids to and from the different motor-driven pumps sections of the plant. Another good example October 4 , 1 9 4 6 E l e c t r ic a l R e v ie w 5 2 3 of the pumping equip­ ment is a line of four­ teen pumps which handle the motor spirit in the final spirit treatment processes. The squirrel-cage driving motors range in size from 2 H.P. to 12 H .P . a n d , run-

Cracking is effected at up to 2,000 lb per sq in. ; note motors at bottom left for circulating oil in pipe-stills rung at 1,500 r.p.m., they are all directly coupled to the turbine pumps. They are direct or star - delta

permission to visit the works and to publish this article, and to Mr. A. Anderson, B.Sc., manager of the Pumpherston Refinery, Mr. G. A. McLennan, chief electrical en­ gineer, and Mr. W.

Line of fourteen units handling the motor spirit in final treatment stages. Large quantities of water are required, par­ ticularly for condensing; right, two 66-H.P. motor-driven sets in one of the pumping installations controlled, and both the motors and the starters are flameproof. Large quantities of water are required in the works, particularly for condensing purposes, and pumping is also used extensively for this service. One of the water-supply pumping installations em­ Stirling, assistant electrical engineer, for braces two turbine pumps which will handle their help in compiling this article. 120,000 gallons of water per hour each. These pumps are directly driven by 66-H .P., Illuminating Engineering Society 1,500-r.p.m., 3-3-kV slip-ring motors with The opening meeting of the session of the direct-on stator switching and rotor-resistance Illuminating Engineering Society is to be held starters. at the School of Hygiene and Tropical Medicine, We are indebted to Mr. R. Crichton, Keppel Street (Gower Street), W.C. 1, on October 8th. M r. J. S. Dow will deliver his presidential managing director, Scottish Oils, Ltd., for address. 5 2 4 E l e c t r ic a l R e v ie w uctooer * , i ¡»to Views on the i\ews Reflections on Current Topics fl ,HOSE present at the twenty-first birth- generation that varies almost directly with * day luncheon of the London & Home output, to w't, the cost of fuel. With hydro­ Counties J.F..A. last week agreed with the electric stations, on the other hand, total Prime Minister’s comment that Messrs. F. W. generating expenses (mainly capital charges) Purse and Leslie Gordon seemed too young remain approximately the same whatever the to have reached retiring age. But “ official ” output, as also do the generally higher costs retirement in such cases frequently marks the of transmission. Further, capital expenditure beginning of a new career and I have no doubt per kW installed in steam stations is usually that this will apply in this case. After all, considerably less. It includes a very much and it is not disparaging to say so, Messrs. smaller allocation to civil engineering which Purse and Gordon are still quite junior to is independent of the number of sets installed. many members of the Authority who con­ Hence coal-fired stations can be extended by tinue to give valuable service. stages to meet a growing demand for elec­ * * * tricity, whereas the full ultimate capacity of There is a good deal of not cheap but water-power plant is commonly provided nasty domestic electrical equipment in the for initially. In the Highlands schemes the shops nowadays, some of it calculated to problem of relating maximum continuous break the heart of the genuine electrical output to consumers’ demands is to be retailer with high standards of commercial solved by turning surplus energy over to the grid. morality and responsibility. . One of these * * * appliances, a toaster, provided material for a sound article on the subject by John M ost people will sym pathize with the view Langdon-Davies in the Daily M ail one day expressed by the Council for the Preservation last week. After pointing out about twenty of Rural England in ¿ts 1946 report that defects in the toaster he blames the public wherever possible power lines in rural areas which encourages the production of such should be placed underground. But opinions things by continuing to buy them. I despair as to its practicability will naturally differ of ever seeing a public wifh the proper according to the degree of liability for the cost. discrimination in these matters. One point The Council favours this practice even in in the article tickled me. Mr. Langdon- cases where it will be “ uneconomical ” to Davies made a grievance of the fact that no follow it. But a certain naivete is displayed plug was provided. He can have but little by the Council when it says:—“ It is rare to acquaintance with the electrical industry if find any disfiguring overhead distribution in he thinks that any plug supplied would be urban areas where the return on the supply likely to fit the buyer’s sockets. for industrial and domestic use justifies the * * * provision throughout of underground dis­ A correspondent asks what foundation tribution, while still producing a handsome there is for Mr. H. H. Merrett’s statement, profit,” even though it goes on to say :— in a recent article in the Sunday Times on “ It is profitable enough to warrant more “ What is the Future of Coal ? ” that coal- generous treatment in the rural areas.” fired plants are often used as stand-by to * * * hydro-electric systems. A short answer is: In view of the many recent complaints of To provide against drought (a failure of fuel supply rather than of generating units) as inferior installation work, the “ earn while illustrated by experience in Eire. “Deliveries” you learn ” type of electrician is not to be encouraged. Writing in the September of water are normally more erratic than those Electrical Trades Journal, Mr. E. W. Bussev, of coal and storage much more expensive. In some countries most water is available general secretary of the Electrical Trades Union, draws attention to an advertisement from rainfall in winter, in others from the by an “ electrical training college ” which melting of snows in summer. In any event offers to impart the “ specialized knowledge hydro-electric stations when linked with more flexible coal-fired stations can be operated necessary for the installation, maintenance more closely to their optimum conditions of and repair of household electrical systems maximum continuous output. and apparatus ” in a period of twelve weeks. Mr. Bussey suggests that as the normal * * * apprenticeship is for five years and even This great flexibility of coal-fired stations adult women workers have to serve a proba­ in its economic aspects, which Mr. Merrett tionary period of six months, the “ college's ” presumably has in mind, arises from the course is a trifle concentrated. I certainly larger proportion of the overall cost of endorse his comment.—REFLECTOR October 4 , 1 9 4 6 E l e c t r ic a l R e v ie w 52 5 I.E.E. Sub-Centres Chairmen for the Ensuing Year

HE chairman of the Sheffield Sub-Centre The chairman of the Devon and Cornwall T of the Institution of Electrical Engineers Sub-Centre, Mr. H.C. Widlake, is mechanical is Mr. W. T. Wardale, consulting engineer. and electrical engineer to the Plymouth & Mr. Wardale was educated at William Stonehouse Gas Co. Mr. Widlake was Hulme’s Grammar School, Manchester, and educated at Jago’s Public School, Plymouth, the Manchester College of Technology, and and was apprenticed to the British Electric received his training at the Barton Hall Traction Co. In 1906 he joined the Plymouth Engine Works of L. Gardner & Sons, Ltd., Corporation Electricity Department as switch­ and the Birkenhead shipyard of Laird Bros. board attendant and relief charge engineer In 1901 he joined the Rochdale Corporation at Prince Rock power station, and in 1912 Electricity Department as junior engineer and he took up his present position with the later became shift engineer. In 1902 he was Plym outh & Stonehouse G as Co. He is an appointed shift engineer at the Peterborough associate member of the Institutions of electricity works, and in the following year Mechanical and Gas Engineers. Mr. Widlake went to the Sheffield Corporation tramways read a paper at the International Gas Con­ power station, being transferred to the ference in Paris in 1937 on “ Electrolytic Electricity Department in 1914, where he Corrosion of Gas Mains.” He is also the became traction engineer in 1922, a position author of “ Electricity on Gas Works.” which he held until 1943 when he took up Mr. T. E. Daniel, M. Eng., lyl.I.E.E., consulting work. A.M.I. Mech. E., borough electrical engineer Mr. W. Warren, the chairman of the East of Darlington, is the new chairman of the Midland Sub-Centre, is deputy borough Tees-side Sub-Centre. After receiving his electrical engineer at Derby. Mr. Warren education privately and at Wallasey Grammar commenced his career as mains draughtsman School, he served an apprenticeship with

Mr. W . T. W ardale Mr. W . W arren Mr. H. C. W idlake Mr. T. E. Daniel (Sheffield) (East Midland) (Devon and Cornwall) ( Tees-side) •

with the Glasgow Corporation Electricity Fawcett, Preston & Co., Ltd., Liverpool, Department in 1919, and in the following followed by a period at Liverpool University, year went to the Northmet Power Co., as where he graduated B. Eng. in 1922, and junior engineer at Willesden. In 1922 he M. Eng. in 1925. Subsequent experience was became charge engineer at Islington, and in gained with the North Metropolitan Electric 1924 maintenance engineer at Hammersmith. Power Supply Company and the Battersea After a brief period as engineer representative Borough Council on both the operational with International Combustion, Ltd.,' he and constructional sides. He was appointed joined the Derby Corporation Electricity deputy borough electrical engineer at Ashton- Department as generation engineer, became under-Lyne in 1932, being promoted to the station superintendent in 1936 and deputy position of borough electrical engineer and borough electrical engineer in 1940. He is manager in 1933. a member of the Institution of Mechanical In 1937 Mr. Daniel took up his present Engineers and of the Institute of Fuel. appointment at Darlington, where the 5 2 6 E l e c t r ic a l R e v ie w October A, 1946 generating capacity of the undertaking has reproducing equipments, for the acoustical since been extended from 17,000 kW by the surveys of buildings, noise analysis, amplifiers construction of a new 60,000-kW power and modulators. In his section investigations station. He is chairman of the Northern into electrical transients, oscillography and Counties E.D.A. Area Committee (being internal combustion engine ignition are their representative on the E.D.A. Council), carried out. Mr. Lucas was awarded the North-East Centre representative on the O.B.E. in the 1944 King’s Birthday Honours. l.M.E.A. Council, a member of the North- The chairman of the West Wales (Swansea) Eastern Area Consultative Technical Com­ Sub-Centre is Mr. J. F. Wright, who is chief mittee of the Central Electricity Board, and technical assistant with the Swansea Corpora­ a member of the No. 1 District Joint Board tion Electricity Department. Mr. Wright and J.I.C. for the Electricity Supply Industry. was educated at the municipal secondary The Dundee Sub-Centre chairman is Mr. school and the School of Engineering at W. H. Howard, assistant distribution engineer Ipswich, and at West Ham Municipal College. with the Dundee Corporation Electricity He was an articled pupil of the chief engineer Department. He and manager of the Ipswich Corporation received his technical Electric Supply and education at Bootle Tram w ays Depart­ Evening Technical ments from 1930 to School where he won 1934, and subsequently the Davies Engineering became junior tech­ Scholarship for a nical assistant with the three-year course at Ipswich undertaking. Liverpool University. In 1938 he was He was an apprentice appointed assistant instrument m aker section engineer. East with Chadburn’s(Ship) London, with the Cen­ Telegraph Co., and tral Electricity Board, Mr '(DutiIde^)>Ward from 1934 to 1936 was and in the following a junior engineer with year joined the Swan­ the North Wales Power Co. In 1936 he sea Corporation as went to Dundee as district engineer in the technical assistant (distribution), being ap­ Electricity Department, and was promoted pointed to his present position in 1941. He to assistant distribution engineer in 1939. is an associate member of the Institution Mr. G. S. C. Lucas, O.B.E., has been of Mechanical Engineers. At Swansea he elected chairman of the Rugby Sub-Centre. is responsible for the electro-technical work He was born in Rugby in 1901 and after a of the undertaking. On the generation side period at the City and he was responsible for the electrical design Guilds Engineering and contracts for the two wartime extensions College he joined of Tir John station, and on the distribution the British Thomson- side he has carried out modernization of Houston Co., Ltd., as the system and large extensions. an apprentice. He became a member of the staff of the Research Insulation Testing Laboratory at Rugby N,improved method of impulse voltage test­ ing insulation between turns of machine upon its inception and Acoils, which has given good results in the in 1932 was appointed company’s Swiss factory, is described by Dr. head of the electrical M. Wellauer in Bulletin Oerlikon, N o. 251, Vol. XXIV. The author’s account and diagrams and development show his impulse generator to be similar to the section. In March last Mr- G- s- c - Lucas Rylander arrangement, but instead of the year he became head unstable discharge thereby produced, a capacitor of the Electronics Engineering Department charged with d.c. is discharged through a spark gap into the test coil. Thus voltage pulses of and in July he was appointed assistant chief equal magnitude and wave can be impressed in electrical engineer of the company. any sequence on the insulation to be tested. The Mr. Lucas has been responsible for many measuring circuit is tuned from the start and so adjusted that a pilot lamp glows at each new developments, particularly for the evolu­ impulse, failure to glow indicating rupture of a tion of the company’s talking-film and sound- coil turn. >1946 October 4, 1946 E l e c t r ic a l R e v ie w 527 lndii§(r| and the House

'OTioj A Twelve Months’ Parliamentary Retrospect s Wards! By F. J. Erroll, m .a .. a .m .i .e .e .. m .p .

Parliament re-assembles next Tuesday after voted against the prayer and so showed itself the summer recess and we have commissioned in favour of the scheme. Mr. Erroll to provide periodical reviews of If the importance of electric power was those aspects of its work, both inside the prominent in the minds of Members at the Chamber and elsewhere, which have a bearing upon any of the branches of the electrical and beginning of the Session, it was brought allied industries. Mr. Erroll’s articles, written again into the forefront of their thoughts at from the point of view of a Member who is an the time of the Summer Recess by Mr. electrical engineer, will also take into account Shinwell’s initial attempts to secure the much “ unofficial ” information in elucidating co-operation of the supply side of the industry the position for our readers. As an introduction in the preparation of his nationalization Mr. Erroll has prepared the following survey. scheme. Here, obviously, politics entered far more prominently into the picture than I (JOKING back on Parliament’s first year during the debate on the Tummel-Garry J of work since the Labour Party was plan.. The House and the country have returned to power, I am impressed both by known since November of the Government’s the number of occasions on which matters intention to nationalize electricity supply, of close concern to the electrical industry bringing it with the coal and gas industries have been debated, and by the unusual degree within the framework of a single national of technical knowledge which Members have fuel policy. shown in their speeches. It may be that in the first respect I am prejudiced to some Improvement Uncertain extent through being myself an electrical The need for conserving Britain’s available M r.J.F.W n* engineer, and I was indeed pleased that my resources of power is accepted by both sides (»«**] maiden speech should have been during one of the House. Whether, however, the placing of the most important debates on electricity of electricity supply under public ownership during the sitting of the present Parliament, will itself bring about a higher standard of namely the discussion on Mr. Snadden’s efficiency is very uncertain. As in the case motion for the annulment of the Tummel- of the iron and steel industry, it would seem Garry hydro-electric scheme. that the case for nationalization is only being worked out after the decision to nationalize Amenity and Prosperity has already been taken, and it can hardly be So specialized a subject brought forth four for the good of the industry that in preparing maiden speeches, one other in addition to the plan only one half of the industry, namely my own being the views of an electrical the municipally-owned undertakings, are engineer, Mr. T. F. Cook, the Member for prepared to co-operate. Dundee. M.P.s on both sides of the House If we can take, as a sample of the energy displayed great breadth of vision during this and foresight with which the Government debate. will manage the nationalized industry, the The essence of the case against the scheme way in which it is at present handling its was that the loss of amenity in one of the Post Office responsibilities, the outlook is not loveliest parts of Scotland was too high a particularly encouraging. I am reminded of price to pay for electric power. It was the two occasions, one in April and the other in general feeling of the House, however, that May, when the Government’s function as a even beauty spots must be sacrificed if the purveyor of telecommunications was under continued industrial impoverishment and fire. The first was the second reading of the social backwardness of the Scottish Highlands Post Office and Telegraph (Money) Bill, the is to be overcome. Underlying the many second an adjournment debate on Post Office valuable speeches on the project was the research launched by Mr. F. A. Cobb, realization that the future prosperity of Labour Member for one of the West Riding Britain is very much tied up with the genera­ Divisions. The House was scarcely satisfied tion and distribution of electric power on by the Assistant Postmaster-General’s account the widest possible scale. Rightly, the House of attempts he was making to overtake the 5 2 8 E l e c t r i c a l R e v ie w October 4 , 1 9 4 6

arrears of telephone installations brought and the investigation of all developments, about by the war. Not only will the con­ bearing particularly in mind the importance venience of the general public be served by of the export trade. a more energetic policy of installation, but in Broadcasting itself has been before the many respects commercial developments are House on at least three occasions, first in being held up by the still unjustifiably low January when the increased charge for broad­ standards of the telephone service. cast receiving licences was announced, Even more disappointing was Mr. Burke’s secondly in July when the amalgamation of response to the challenge thrown down by regions was discussed at question time and, Mr. Cobb when he urged that public cor­ thirdly, during the important debate on porations such as the Post Office should be broadcasting policy later the same month. examples of efficiency. The answers were All of these have an indirect bearing on the all too inadequate to the four questions he electrical industry, but the important debate raised: “ Does the Post Office do sufficient was limited to the politics of broadcasting research ? Does the telecommunications and did not deal with technical problems, industry do sufficient research ? Is this great apart from wavelengths. Government undertaking an example to industry ? How do we compare with other Education and Training countries, and what is the future research Finally there are a few matters connected policy of the Post Office and the telecom­ with the personnel of the industry which are munications industry ? ” The Assistant worthy of comment. First, it is worth Postmaster-General gave only the most emphasizing once again, if only briefly, the watery account of the research carried out by serious effect upon firms occasioned by the the Post Office itself, and did far less than indiscriminate call-up of young men in key justice to the sustained and very remarkable positions. Throughout the year M.P.s of all programmes of research carried out by the parties shot questions at the Minister of telecommunications industry. Labour, and they certainly secured important Indeed, it is pertinent to recall that the modifications. Many of the young men were development of a virile British manufacturing trained during the war years, when the industry was for long held up in the early industry had high priority, to fill positions of years of the century by the backwardness considerable technical importance, an import­ of the Government after assuming responsi­ ance which has in many instances been in bility for the telephone service. Since that no way decreased by reconversion. time the industry has consistently been ahead of the Post Office, and it is significant perhaps The other aspect of this matter to which I that in the present plethora of “ working would like to refer is one in which the parties ” for industry the electrical manu­ Government has itself taken a definitely facturers have so far been exempt. The clear lead. This concerns the scheme for a industry is indeed more energetic than Mr. new and effective link-up between technical Cobb would admit, despite his personal education and industry. To an interested experience, and given a clear lead by the House the Parliamentary Secretary to the Government there is no reason to doubt that Ministry of Education announced in March it will continue to maintain its high reputation the steps that were being taken to implement for research and development. the recommendations of the Percy Report. The first was a system of regional councils Television Development leading up to the establishment of a National Council for Technology, aimed at securing a It is to be hoped that in television, where sufficient supply of industrial personnel from manufacturers are already away to a flying the universities. Secondly, industry was to start, the step taken last November in setting be given a strong voice on the governing up a special advisory body will be followed bodies of major technical colleges, and by a thorough implementation of its pro­ thirdly there was to be an extension of research posals. These, it may be worth recalling, work in technical colleges, especially on were intended to cover the planning of the behalf of local industries. This is a matter future television service, including standards in which a Government Department has to be adopted; the initiation and co-ordina­ given an example of energy and vision which tion of research into principles and practice; might well be followed by other Departments the encouragement of pooling of television which affect the electrical industries. These patents and their use in the national interest; industries must give their fullest backing. October 4, 1946 E l e c t r i c a l R e v ie w 5 2 9 CORRESPONDENCE Letters should bear the writers' names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents' opinions. Domestic Water Heaters of course, not necessary. Tests show that JBECENT articles and correspondence in the flow is approximately J gal. per min., the Electrical Review have referred to thereby giving hot water constantly without the waste of electricity in maintaining utilizing the storage tank. thermostatically controlled domestic water Westclijf-on-Sea. G. J o n e s . heaters at the required temperatures and also to the amount of time taken as well as the Trunk Road Lighting further waste of electricity in heating the ■ SHALL be glad if you will kindly correct bulk of the water with the present methods of the misreporting in your September 20th circulation. issue of my remarks in the discussion of As a result of tests on models constructed Mr. Fryer’s paper on “ Street Lighting from in accordance with the accompanying the Motorist’s Point of View ” read at the diagram, the efficiency of the design shown recent conference of the Association of (which is patented) appears to be higher Public Lighting Engineers. than that of My actual statement was to the effect that p r e s e n t water I considered Mr. Fryer to be too conservative heaters and it in his reference to road lighting outside should cost less built-up areas, and that the Association to manufacture. should advise the Minister of Transport, now In this waste is taking over responsibility for the lighting of obviated, since trunk roads, that modern methods brought the water flowing the lighting of long stretches of such road­ through the inlet ways quite within the realm of economic pipe (1) auto­ practicability. matically passes I further stated that I believed that demands through the union in the interests of safety and national efficiency ( 2) a n d r is e s would in any case bring about early extension through the of this form of arterial road lighting which copper tube (3) had already begun to appear before the war, which is covered and that development of a new Code of the by a quartz-glass Practice was called for to ensure uniformity sleeve carrying a and efficiency since this class of work was not heating element really covered by the present M.O.T. report. of any desired London, W. 1. H u g h F. A l l p r e s s loading. (Simplex Electric Co., Ltd.) Immediately the Construction of domestic Trams and Buses water enters (3) water heater it is heated and W JAD it not been for the war, a decision by the time it reaches the outlet pipe (4) of the Southampton City Council, complete circulation has been created and approved by the ratepayers and ratified by the bulk of the water heated very rapidly. Act of Parliament, to replace the trams by The outlet pipe passes through the air trolley-buses, would have by now been com­ chamber, which has become almost white pleted. Without reference to the public, and hot owing to the concentrated heat from the as a result of a report, the details of which element, and which is not cooled in any way, were never disclosed (and which this Associa­ not having come into contact with a lower tion was informed was for “ privileged temperature of water at any time. persons only ”), the Council decided to The water heater could be made so that the abrogate the approved scheme and to carry water from the main could be connected out a programme of replacement by oil- directly to pipe (3), through which it would engined buses. Immediately a storm of pass to the outlet-pipe via a union provided protest arose. Six letters out of seven in the between the two, giving it an extra boost. local papers ask that electric traction, in the In this form the therm ostat shown at (5) is, form of either modern trams or trolley-buses, Ct 5 3 0 E l e c t r i c a l R e v ie w October 4 , 1 9 4 6 shall be retained. The Council has refused judgment ; and the margin allowable to safeguard to produce comparative operating costs and the maker’s standard and reputation. to give an assurance that fares will not be Extraneous influences on design were grouped under the headings of production limits of increased or stages reduced. materials and labour ; commercial pressure and This Association (a local organization limitations; and operation qualifications. With which is entirely unconnected with any these complications and obstructions it was not commercial undertaking) recently conducted surprising that the cost and performance of the a house-to-house canvass. The results apparatus concerned frequently seemed to have are as follows: In favour of modern tram- little logical or rational relation to the simple cars, 2,605; trolley-buses, 2,164; motor principles of design and manufacture. omnibuses, 425. The Association has sought As a broad generalization it should be ex­ pected that, assuming modern methods of to have the whole matter reviewed by the production were employed, any modification Council, suggesting that a demonstration of which interfered with the standardized con­ a modern tram, trolley-bus and motor bus be struction was liable to cost more even though arranged, following which a free vote could the material and labour concerned were be taken. decreased. This result, though not generally While our preference is for modern trams, appreciated, followed naturally and logically we hold that, in either form, electric traction from its inverse form (one of the chief arguments is preferable. As ratepayers, we do not relish for standardization) that due to the quantity production costs were thereby reduced. the loss of about £12,000 per annum to our own electricity generating station any more than we do the £50,000 scheme proposed for Municipal Reports building a bus depot at a time when housing York.—The Electricity Department possesses shortage is acute. a small hydro-electric station at Linton Lock which generated 2-1 m illion kW h in 1945-46. Southampton. H. N. S t o c k w e l l , Hon. Secretary, Although this was only a fraction of the total sales—111f6 million kWh—it resulted in a Southampton Tramcar Passengers' saving to the undertaking of £3,390, the cost of Association. generation being only 0-218d. per kWh; all capital charges were paid off in 1936. The Design and Practice report of the city electrical engineer (Mr. W. A. Crocker succeeded to the position last March Factors Influencing Cost and Performance on the retirement of Mr. E. J. Nichols) relies ■ N his inaugural address this week at Man- largely on a series of charts to illustrate the Chester as chairman of the North Western growth of the undertaking and the changes in Centre of the Institute of Electrical Engineers costs. Last year’s sales were 3-8 million kWh Mr. E. T. N o r r i s (Ferranti, Ltd.) explained how less than in 1944-45, although domestic supplied academic design, which is largely theoretical, expanded and now represent slightly more than must be modified by practical considerations. half of the total. Income rose by £12,428 to The latter occasionally obscured the principles £438,166, of which £389,982 was for the sale involved so that a decrease in the cost of of electricity. Expenditure on the revenue materials, for example, might increase the cost account amounted to £401,230 and the net of the article manufactured although the labour result was a loss of £22,768. cost remained unchanged. Such complications Guildford.— T he fall in the sales in 1944-45, might be avoided by differentiating between owing to a reduction in the demand for power cost and price. from wartime factories, etc., continued last year, Mr. Norris considered contact between when sales of industrial power fell by over a designer and user indirectly through the sales million kWh. This, however, has been more department, in general, to be inadequate. than counterbalanced by an increased demand Purchasers should refrain from insisting upon from almost all other consumers, including an mathematically optimum relations, for wide increase of nearly half a million kWh for street departures from calculated optimum values lighting. The net result, at 56 million kWh generally had little practical effect and were sold, is a record for the undertaking, enabling frequently justified by other considerations. it to limit the rise in costs to three-hundredths It was surprising how frequently the actual of a penny per kWh sold. On the other hand (statistical) value of the factor of safety was not the maximum demand has increased by 2,000 definitely known. It was made up of four kW, which will mean a rise of £10,000 in grid components, namely, the designer’s incomplete charges. technical knowledge and experience; variability The accounts show a deficit of £10,412 after of materials and labour employed (discussed by paying over £ 12,000 in rebates to consumers. the author in the I.E.E. Journal, Vol. 93, Part In the past five years the total returned to II, April, 1946); variability of operating con­ consumers in the form of rebates has exceeded ditions, which was a matter of discriminating £84,000. October 4, 1946 E l e c t r i c a l R e v ie w 531 London »I.E.A. Twenty-one Years of Service

Friday last the London and Home It was due to the joint efforts of Mr. Purse and Counties Joint Electricity Authority held Mr. Gordon that they were able to embark a special meeting and luncheon for the dual upon distribution. It was hoped that their purpose of marking the Authority’s “ coming- work was but a stepping stone to a greater of-age ” and to pay tributes to Mr. Leslie future for the J.E.A. On behalf of the members Gordon (clerk and solicitor) and Mr. F. W. he presented to each of them a special resolution, Purse (chief engineer) upon their retirement with a record of their services, engrossed on from the Authority’s service. The Prime vellum and handsomely bound. Minister, the Rt. Hon. C. R. Attlee, a founder Alderman Shaw welcomed Mr. Attlee and member and former vice-chairman of the expressed the members’ gratification that the Prime Minister had been able to spare the time from his onerous duties to attend that day. For a great many years Mr. Attlee had had a full appreciation of the great importance of electricity supply. In responding, Mr. Attlee said he was glad to meet so many old colleagues and to be able to do honour to Messrs. Gordon and Purse. Before the J.E.A. was formed he was concerned with its “ pre-natal ” care and he was trying to put into practice some of the lessons ' which he then learned. The Authority had been Mr. Leslie Gordon (left) and Mr. F. W . Purse (right) with the Prime Minister fortunate in securing such experi­ enced and wise chief officials. Fie Authority, was present at the luncheon. remarked that they both still seemed young and A l d e r m a n W. H. S h a w , vice-chairman, would no doubt carry their vigour into whatever presided in the absence of the chairman (Alder­ future activities they engaged in. man Dudley Stuart, M.I.E.E.). He read a In expressing his thanks, Mr. Gordon said letter from Alderman Stuart regretting his that the J.E.A. with a very sound crew had inability to attend and mentioned the absence returned to port. He hoped that the shipmaster, for various reasons of others who had hoped to Mr. Shinwell, would not have the ship broken be present, including Mr. Herbert Morrison, up but refitted to set out on an even grander Mr. J. Chuter Ede and Mr. C. W. Key, all voyage. A great deal of the talk about former members of the Authority and now in nationalization was useless; there was no the Government. room for anything which tied up the use of Referring to Mr. Leslie Gordon, Alderman electricity. There was no need for nationaliza­ Shaw said that he had taken the initiative in tion to stifle individual enterprise and he was securing greater powers for municipal electricity sure that the Government would not take the supply authorities; his efforts were largely actual conduct of the industry out of the responsible for the legislation which enabled such bodies as the London J.E.A. to be set up. He had also been active in obtaining the transfer of local authorities’ purchase rights to the J.E.A. Mr. Purse had worked for the elec­ tricity supply industry for nearly fifty years and his experience and work for the Authority had been invaluable. Members and guests at luncheon 5 3 2 E l e c t r i c a l R e v ie w October 4 , 1946 present capable hands. He thanked all his within the more limited scope of its activities colleagues for their help and wished success to the Authority had done extremely well. the new manager, Mr. Norman Elliott, the Mr. Goodrich, chairman of the General clerk and finance officer, Mr. A. L. Burnell, and Purposes Committee, also replied. He said the solicitor, Mr. W. H. Failes. that the Minister of Fuel and Power would be M r . P u r s e also replied. He said that he well advised to look to the J.E.A. as one means had always stood for the same things as the of ensuring a good service. The electricity Authority; indeed he had got into trouble industry had been built up by the efforts of with the I.M.E.A. for expressing his views on competent men and women irrespective of the these matters. The work had been difficult but form of ownership. They hoped that the interesting; he had found much opposition Authority and similar bodies would be allowed outside to the Authority’s schemes. The to continue their good work. public wanted a number of anomalies straight­ ened out and this had caused successive Govern­ The Retiring Officials. ments to realize that something had to be done. Mr. Leslie Gordon has been clerk and He looked upon the Authority’s work as, in solicitor to the Authority since its inception. effect, a small nationalization scheme. The war Mr. Gordon began his career in the public had put an end to their upward swing and service nearly fifty years ago when he entered probably before they could resume they would the office of the town clerk of Wallasey. Thence be swept into a larger organization. he went to Northampton and later to Hammer­ Lord Falmouth (a former vice-chairman), smith, becoming town clerk of that borough in in proposing the toast of-the J.E.A. described 1912 when he was only thirty-two. Twelve himself as an “ old boy ” of the Authority. years later he was appointed town clerk of He had returned to see many new faces and St. Marylebone and joined the Authority in the some sad gaps. Turning up the “ school following year. Mr. Gordon was a prime mover register ” he found that many “ old boys ” had in the establishment of what is now known as done very well—many of them were now the Metropolitan Boroughs’ Standing Joint Cabinet Ministers. When he joined the Committee and he became the hon. secretary Authority a scheme was afoot for the erection of the Conference of Local Authorities Owning of a large power station from which the local Electricity Undertakings in Greater London authorities would be supplied but the plans which qualified him for the position of clerk of failed to mature. the J.E.A. when it was formed. He has an In his opinion, in the great changes which encyclopaedic knowledge of electricity supply were in prospect, the J.E.A. would still play an matters and this was recognized by his appoint­ important part though its name might be ment as hon. secretary of the Conference of changed. It could well constitute one of the Joint Electricity Authorities and Joint Boards contemplated regional authorities. and as chairman of the Joint Committee of He had been president of the Electrical Electricity Supply Organizations. Research Association and had been asked to M r. Frederick W . P u r s e , the retiring chief serve on the Gas Research Council. In these engineer to the Authority, is one of the best- bodies engineers and scientists worked together known figures in the electricity supply industry for the common good. In his view, so far as and other branches. He has been with the the public was concerned it did not matter J.E.A. since 1929 before which he had had whether they received their energy by wire or thirty-two years’ experience in the supply by pipe. Referring to the possibilities of the industry. He is a native of Bristol and received atomic bomb, Lord Falmouth suggested that it his education at the Merchant Venturers’ would result in smaller, more widely distributed Technical College and University College, power stations. He did not think that atomic Bristol. He obtained a number of certificates power would be available for many years, but in electrical engineering and allied subjects, he had great hopes of the gas (or hot-air) turbine. including a City and Guilds honours diploma in electric light and power distribution. His Record Development connection with the supply industry began in Alderman Shaw, responding to the toast> 1897 when he entered the Bristol Electricity said that the Authority was proud of its record- Department. Two years later he went to Bath Since the taking over of the distribution areas as assistant and in 1901 was appointed deputy the number of consumers had increased from at Warrington. His first “ chief’s ” job was at 40,000 to 132,000 and the sales of energy from Watford where he stayed from 1908 to 1913; 32 to over 200 million kWh per annum. No while there he recommended the provision of other undertaking could show greater develop­ trolley-bus services, installed a 30,000-kW. ment and they hoped to make even more rapid 3,000-r.p.m. set, and secured the adoption of progress in the future. the I.E.E. Regulations for the Electrical Equip­ M r. M a r c h a n t , past-chairman, recounted ment of Buildings as bye-laws. He went to some of the early struggles of the Authority. Carlisle in 1913 and remained there until 1919 A scheme produced in 1928 for the taking over when he became chief engineer at West Ham, of the distribution rights of 88 authorities did leaving to join the J.E.A. in 1929. not meet with the hoped-for success, but Mr. Purse has a long record of service on October 4, 1946 E l e c t r i c a l R e v ie w 5 3 3

committees and councils of the electrical and Fair Trading Committee “ D ” and has also allied industries. He was president of the been active in the affairs of the Electrical I.M.E.A. in 1928 and he has been a vice- Research Association, the British Standards president of the Institution of Electrical En­ Institution, the Electrical Development Associa­ gineers and chairman of the Transmission tion and many other electrical organizations. Section. He has been a member of the Board He was recently elected president of the Building and Executive Committee of the National Industries National Council. Register of Electrical Installation Contractors In the course of his career Mr. Purse has since its inception and he has recently accepted acted as consultant to many supply authorities, an invitation to continue to serve the Register and he intends to devote some of his attention as honorary director. He was chairman of the to this type of work during his retirement. PERSON A I; and SOCIAL News of Men and Women of the Industry

■N this issue we publish the first of a series of Committee in Germany and Austria. Upon his Parliamentary surveys by Mr. F. J. Erroll, release from the Army in January he joined the M.A., A.M.I.E.E.,M.P., whose varied experience boards of W. J. Furse & Co. (London), Ltd., has equipped him well for the interpretation of and the Mills Scaffold Co., Ltd. the proceedings for our readers. Mr. Erroll Sir Arthur Stanley Angwin (chief engineer was born in London of Scottish parents in 1914. of the General Post Office) headed twenty British He was educated at Oundle and went to Trinity communications experts who went to Moscow College, Cambridge, by air last week to take part in the five-power where he obtained an conference on wavelengths and to arrange a honours degree in the world telecommunication conference in Mechanical Sciences Washington next April. A Reuter message Tripos. He rowed for from Moscow states that the other countries Trinity First Boat. In represented at the talks, expected to last about 1936 he spent eight three weeks, are the Soviet Union, France, months studying trans­ China and the United States. port, engineering and mining developments in Dr. P. Dunsheath, C.B.E., M.A.(Cantab.), South Africa, Rhodesia, D.Sc.(Eng.), relinquished his position as chief East Africa, the Belgian engineer of W. T. Henley’s Telegraph Works Congo, Nigeria, etc., Co., Ltd., on September 30th. His services and upon his return will be retained as con­ M r. F. J. Erroll to this country pre­ sulting engineer and he pared a draft chapter also retains a seat on for Lord Hailey’s African Research Survey. the boards of the parent In 1931-32 and 1936-37 Mr. Erroll served an company and its sub­ apprenticeship with the Metropolitan-Vickers sidiaries, Henley’s(South Electrical Co., and was chairman of the At'rica) Telegraph Works Apprentices’ Association. After this, he Co., Ltd., Henley’s Tyre remained in the company’s Research Depart­ & Rubber Co., Ltd., ment. He was on the staff of Evershed & and the Holborn Con­ Vignoles, Ltd., in 1938-39 and made several struction Co., Ltd. journeys to the Continent, including visits to Dr. Dunsheath joined ■ German engineering establishments. Henley’s in 1919 and Mr. Erroll joined the 4th County of London was initially engaged in Regiment (T.A.) in May, 1939, and was technical .reorganizing the com­ Dr. P. Dunsheath adjutant on the outbreak of war. In 1941 he pany’s Research D epart­ was transferred to the Tank Division of the ment, being appointed research and technical Ministry of Supply where he served in various manager in 1929, and chief engineer in 1934. capacities. As a Iieutenant-colonel he went to He was elected a director in 1937. Italy and later to India and Burma. He acted On September 18th, the staff of the North as technical advisor on armoured vehicles to Wales Power Co., were entertained by the S.E.A.C. and took part in the Command’s first directors of the company to their first post-war large-scale amphibious operation. He was annual outing. The outing took the form of a promoted colonel in 1944. day at Llandudno. After lunch the party went for In the General Election Mr. Erroll was elected a short cruise to sea on the pleasure steamer, Conservative member for Altrincham and Sale. St. Trillo. Upon the return to Llandudno an Later in the year he carried out various missions evening meal was served after which Lt. Col. for the British Intelligence Objectives Sub- J, Rankin, director and general manager, sa(d 5 3 4 E l e c t r i c a l R e v ie w October 4 , 1946

that out of 660 employees, 570 were present. Organization Committee of the Society of He expressed pleasure at the presence of the Engineers of which he has been a member of chairman, Air Commodore C. E. Benson, and the Council for some time, vice-chairman of the -several other directors and friends of the Finance Committee of the Institute of Welding, company. Air Commodore Benson referred to and has been elected to the Council of the the strenuous part played by the staff during Sheet and Strip Metal Users’ Association. the war. After tea, there was dancing at the Mr. F. R. A. Morris, of Carlisle, has been Winter Gardens Ballroom and the party then appointed lecturer in electrical engineering and saw the show “ Summer Serenade” at the Pier allied subjects at Carlisle Technical College. Pavilion. Mr. J. L. Hewett, A.M.I.E.E., resigned from Lt. Col. W. R. S. Hodgson, after seven years’ the Research Department of the English war service, has taken up his duties again as Electric Co., Ltd., Stafford, on August 30th to manager of the Lead Industries Development take up an appointment as lecturer in electrical Council, which he has held since the formation engineering at Staffordshire Technical College. of the Council in 1935. Mr. Hewett joined the English Electric Co. in Mr. E. W. Krebs, A.M.I.E.E., resigned early 1935 in the transformer drawing office, later this year from the position of chief technical being transferred to the Research Department. and development engineer with Bull Motors, He took up his new duties at the end of Sep­ Ipswich, and has established himself as tem ber. consulting engineer specializing in design and Bolton Corporation Electricity Committee has development work for electrical machines. He appointed Mr. E. W. Hewlett, A.M.I.E.E., has changed his office address to 42, Selcroft A.M.I.Mech.E., deputy borough electrical Road, Purley, Surrey (telephone: Uplands engineer at Tunbridge Wells, as deputy electrical 6789). engineer and manager of the Bolton undertaking Mr. A. N. Allen, chief clerk in the Gloucester in succession to Mr. T. Jack. Mr. Hewlett City Electricity Department, was presented with was with the Central Electricity Board as a gold wristlet watch and a silver tankard on assistant transmission engineer at Bristol from his retirement after over forty years’ service. 1933 to 1936, and as assistant engineer to the The presentation was made by Mr. Emil commercial manager in London until 1938. He Braathen, city electrical engineer. was then appointed senior distribution assistant St. Pancras Borough Council Electricity and later mains engineer to the Preston Cor­ Committee has recommended the appointment poration Electricity Department, staying there of Mr. J. F. Srveetland, shift engineer, as assistant until June of this year, when he accepted his power station superintendent at a salary of present appointment in Kent. £601 per annum. Mr. S. W. Spendlove, A.M.I.E.E., retired Mr. Hedley Large, borough electrical engineer from the service of the L.M.S. Railway on of Stoke Newington, is to retire next April after September 30th. He held the post of signal forty years’ service. and telegraph engineer for the Northern Mr. H. W. Leonard retired on Monday last Division of the L.M.S., in which he has been after thirty-six years’ service with the General responsible for all mechanical and electrical Electric Co., Ltd. Mr. Leonard was a senior signalling and communication systems over a member of the G.E.C. publicity organization, large area. In 1907-8 he installed the equipment and for many years he held the position of on the railway between Hevsham, Morecambe space buyer. During his career Mr. Leonard and Lancaster for the electric train service. served on the publicity committees of nearly all Mr. Alfred Clark has resigned from the the associations connected with the electrical presidency and from the board of Electric & industry. Musical Industries, Ltd., with which he has Mr. J. Denis Pooley has been appointed a been associated for forty-seven years. director of Pooley & Austin, Ltd., the appoint­ Mr. E. B. Palmer, chief technical assistant ment taking effect from July 1st. Mr. Denis with the Warrington Corporation Electricity Pooley is a nephew of Mr. F. Pooley, chairman Department, has been appointed electrical of the company. engineer and manager to Leek (Staffs.) Urban Miss Caroline Haslett, C.B.E., director of the District Council. He takes up his new duties Electrical Association for Women, is a member on November 1st. of the Committee appointed by the Minister of The following branch office appointments Town and Country Planning to advise him on have been made as from October 1st by the the building of a new town in the Crawley- Electrical Apparatus Co., Ltd., following the Three Bridges area, Sussex. resignation o f the com pany’s L ondon office Mr. E. S. Waddington, of Philips Industrial manager, Mr. C. G. Dobson. Mr. R. E. (Philips Lamps, Ltd.), has received notification Mathieson, previously B irm ingham office of three new appointments in the past few weeks, manager, becomes London office manager, and in the various Associations with which he is Mr. C. F. Jackson, previously Bristol office connected. He has become chairman of the manager, becomes Birmingham office manager. October 4, 1946 E l e c t r i c a l R e v ie w 535

Lt. Col. (temp.) A. E. Knights, D.S.O., M.C., M.M., T.D., Royal Norfolk Regiment, resident Obituary engineer to the East Anglian Electric Supply Mr. J. B. M. Gubbins.—We regret to record Co., Ltd., has been mentioned in dispatches in the death of Mr. J. B. M. Gubbins, deputy recognition of gallant and distinguished services commercial manager of the Central Electricity while a prisoner of war. Board, which occurred on Saturday last at the Mr. Robert Bell, M.I.E.E., A.M.I.Mech.E., University College Hospital, London. Mr. deputy borough electrical engineer of Barking, Gubbins, who was in his early forties, joined has been appointed to the position of borough the Board in 1930 and was appointed deputy electrical engineer of Erith, at a salary of £1,400 commercial manager shortly before the outbreak per annum, in succession to Mr. E. A. Logan, of the war. Before joining the Board he was who is taking up a post with the Government with Kennedy & Donkin, consulting engineers. of Burm a. He was an associate member of the Institution of Electrical Engineers, and was a Faraday Mr. Arthur Andrews, A.M.I.E.E., of F. Reid, Gold Medallist. Ferens & Co., Ltd., Newcastle-upon-Tyne, has retired after fifty-two years’ service with the Mr. S. J. H. Hosgood.— It is with regret that company which he joined as an apprentice and we announce the death of Mr. S. J. H. Hosgood, rose to be chairman and managing director. which occurred at Plymouth on September 18th. He was one of the first members of the Mr. Hosgood was branch manager at Plymouth Electrical Contractors’ Association. The staff for British Insulated Cables, Ltd., for many and employees of the company at Newcastle years and continued in that capacity for British and Sunderland have presented him with a Insulated Callender’s Cables, Ltd., until January gold watch as a token of esteem. of this year, when he became branch manager for the company for the Bristol and South West At the September meeting of Scunthorpe Area. Borough Council tributes were paid to the work of Mr. A. L. Boyle, who will shortly be W ills.—Mr. J. B. Snell, a member of the staff retiring after 25 years as borough electrical of the British Electrical & Allied Manufacturers’ engineer. Association, formerly commercial manager of the South Metropolitan Co., at one time The following appointments are announced associated with the West Kent Electric Co., by the Jackson Electric Stove Co. Ltd.:— and branch manager at Liverpool of W. T. Mr. F. H. Williams, who founded the company Henley’s Telegraph Works Co., Ltd., son of the in 1912 is chairman, and Mr. W. L. Tregoning, late Sir John Snell, G.B.E., left £4,811 (net who during the war was Director of Ammunition personalty £2,802). Production at the Ministry of Supply, becomes managing director. Mr. A. T. Piercy, director Mrs. Anna Volk, widow of Magnus Volk, of and secretary is retiring, and Mr. E. Penn, Brighton Electric Railway fame, who died on A.C.I.S., has been appointed secretary. January 22nd last, left £648 gross, with net Mr. T. Kearns, of Blackpool, has been personalty £593. appointed technical assistant to the Thornton Cleveleys electrical engineer. Alderman Harry l.eason, chairman of the Power-factor Improvement North West Midlands Joint Electricity Authority NDER the chairmanship of the president, and of the Stoke-on-Trent Electricity Com­ Mr. F. W. Godden (city electrical engineer), mittee, is to be Stoke-on-Trent’s next Lord ther Coventry Electric Club held its first meeting M ayor. of the 1946-47 session at the electricity show­ Mr. T. W. Towers has been appointed acting rooms on September 24th. One of the Club’s operating manager, trams and trolley-buses, of own members, Mr. L. deWynter, addressed the the London Passenger Transport Board. meeting on the subject of power factor improve­ ment, stressing the economies which were to be Mr. L. S. Kinnear, a director and secretary of effected thereby and mentioning that in the the British Oxygen Co., Ltd., has been appointed past many industrialists had improved the a managing director. He is succeeded as power factor in their works, but had neglected secretary by Mr. M. K. Arnott, who has held the lesser savings which were to be obtained by position of chief accountant. correctly applied phase advancing equipment. Alderman J. I.. Dirkin, who will be Lancaster’s Mr. deWynter also mentioned the importance next mayor, has been chairman of the Electricity to the distribution network of capacitors being Committee since 1937, and was recently elected switched in and out of circuit as ana when to the I.M.E.A. Council. He represents the required, and he illustrated a means of doing Corporation on the District Joint Board and that automatically. The author left no doubt District Joint Council of the Electricity Supply in the minas of his listeners that he favoured Industry. the use of static capacitors, and he mentioned Mr. J. Malley and Mr. T. Storrar have been that among their aavantages over other types of appointed directors of the Mirrlees Watson Co., phase advancing equipment were low installation L td. cost and economy in floor space. 536 E l e c t r i c a l R e v ie w October 4, 1^46 Russian Trade Prospects His visit confirmed his admiration ^ Russians; they were certainly not w uct;on Sir George Nelson on His Visit were anxious to get on with their reco ^ ■ MMEDJATELY upon his return from In his opinion substantial orders; m Moscow last week, Sir George Nelson, available for all kinds of heavy P cUnn]v chairman of the English Electric Co., Ltd.! Russians would take as much as we c: upon' gave his views upon the future possibilities of if prices and conditions could be agreed upon. trade between this country and Russia at a press conference. Sir George emphasized that he went to Russia, by express invitation of the New Brighton Station Soviet Government, as an individual industrialist Ultimate Capacity of 300,000 kW not in any official or representative capacity. RIGHTON Corporation has been instructed He took with him his own experts in the fields B by the Central Electricity Board to com­ of steam and hydro-electric power station mence work on a new power station which is design and construction, power distribution and estimated to cost £14,000,000. It will be control equipment, traction and radio-com­ known as Southwick “ B ” station and will munication. These experts discussed matters adjoin the existing Southwick station. The with their Russian opposite numbers and gave first section is scheduled for completion by lectures. September, 1949. and it is expected that the Sir George said that his objects were to see Board will shortly issue a direction for the the devastation caused by the Germans, examine second section for completion by the winter of Russia’s industrial establishments and see what 1950. The two sections will bring the new could be done to restore trade between our two station up to half its ultimate planned capacity countries through normal channels. Russia’s of 300,000 kW. vast immediate need of heavy electrical and It is also proposed to build a fleet of ocean­ other plant was disclosed to him, but he had going steam colliers for bringing coal by sea from had to point out that the productive capacity of the North of England and considerable alter­ Great Britain (and other countries) was at ations may have to be made to Shoreham present fully occupied and Russia could only be harbour to permit the use of colliers of 2,500 assisted in a reasonably short time by very tons. special efforts. He agreed that those efforts Mr. H. Pryce-Jones, the electrical engineer should be made as a contribution to peace and the raising of the standard of living. and manager, has been appointed consulting engineer for the new project. He was aghast at the destruction which he saw; it had had a very serious effect domestically and industrially. We had suffered but the Batti-Wallahs’ Luncheon sufferings of Russia were incomparably greater. He admired the steps already taken before the Telecommunications in Wartime the war to develop the country; now a great TB3HE principal speaker at last week’s monthly part of the industrial resources had been luncheon of the Batti-Wallahs’ Society was destroyed. The Russians were anxious to give Col. H. J. Wellingham, London manager for us an opportunity to help them in the C able & Wireless, Ltd., who spoke on the reconstruction and industrialization of their overseas cable and wireless services during the country. war and gave some of his experiences. Col. Wellingham opened his remarks by Considerate Treatment Requested paying tribute to Sir Edward Wilshaw, chairman Again Sir George stressed the fact that he of Cable & Wireless, Ltd., whose foresight, did not go to take orders but to discuss the initiative and planning were so largely respons­ general resumption of trade. He impressed ible for the important part played by cable and upon the Russians the acute shortage of technical wireless communications during the war. He men and skilled labour in this country and asked referred to the establishment of emergency them not to involve our limited resources in stations in this country to ensure that communi­ preparing tenders merely as a price check upon cations would not be interrupted. One of the tenders from other sources and never to insist features of electrical communication was its on short delivery periods for the sake of quick flexibility, so that if one route became ineffective delivery. He also asked that decisions upon messages could be sent over another. tenders should be made as soon as possible so While wireless communication had not the that productive capacity could be allotted to secrecy of cable communication, it had its uses the orders. and was frequently used to pass false informa­ Throughout, the discussions were most frank tion on to the enemy. The work of laying and friendly. They were the forerunners of maintaining and repairing submarine cable more detailed negotiations on such matters as continued throughout the war and Col Welling­ general conditions of contract so that suitable ham paid tribute to the crews of the cable ships compromises might be arrived at—and the who carried out the hazardous work a n d to Russians were willing to compromise. He had the magnificent work of the Roya, ¿ o rp s o f been free to go where he liked without restraint. \946 October 4, 1946 Electrical Review 537 ‘ o f H it ffiVi, I'sltucVwi UH.E.A. Council in Dumfries w o u l d t, plant; 4 ■^OLLOWING its custom of visiting the were formally opened accommodate the auto­ :ou\

a fleet oft# S coal b; sot onsiderablei t i e to Shore ' colliers o( y Members of the l.M .E.A. Council during their recent visit to Dumfries Council at Marchmount. Also a new principal Council and an electricity supply department. electrical t « substation for the receipt of grid supply was There were only two in the United Kingdom pointed const officially opened by Alderman Sir William and the first was in Dumfriesshire. Throughout Walker, J.P. During the Thursday afternoon its extensions the department had had very little the Moffat and Thornhill districts of the Council’s trouble with regard to wayleaves. That Was area were inspected. On the following day the evidence of the desire on the part of the com­ LuncteoD party visited the hydro-electric stations of the munity to assist in the development for their i i n W a r d œ i Galloway Water Power Co., at Tongland, own benefit. Mr. Pickles had adopted a las »eet'sBoc Earlstoun and Carsfad. method which had been justified in spite of ta B a h s ' Soddri. The new substation and control room which much criticism in the original stage. indon iiia r tho ipote or i ttmim: Molybdenum Steam Pipes speriences. ! his remub : M REPORT from the British Electrical and at 600-620 deg C followed by slow cooling Allied Industries Research Association, Ref. to 450 deg C and then by cooling in still air. W a * , c l * S/T141 (is. net), has as its subject, the “ Cracking No surface damage (as by hammering) which whose fors?! in Service of 5 per cent Molybdenum-Steel would create local residual stress should be so largely resp: Steam Piping ” which has recently been ex­ permitted after this stress-relief treatment. aved by cabkr perienced in some power stations operated with Hammering should not be allowed when a part ing ie w 1 high-temperature steam. The report draws is under hydraulic stress. :bi o ( w p attention to measures (the adoption of which is Surface irregularities, which would cause areihatcoBiE generally advisable for all alloy-steel piping at stress concentration, should be prevented or pted. Oneoid high temperatures) that would considerably removed. Corrugations must present smooth llicjiill M 1 reduce the risk of cracking. Research is surfaces for the operation; all sharp radii and Jet»»**1 proceeding with a view to finding the major changes in contour must be avoided. Notches w lk factors responsible and eliminating material at fillet welds should be machined or ground 10 Ini col P with a susceptibility to cracking. away. Working stress at operating temperatures , si ta)is® In the meantime the following recommenda­ should be minimized by making thermal- fila M 0 tions are made:—Nickel and copper contents expansion stresses small; “ cold pull up’’ irkofluV of the steel should be as low as possible in should approximate to full thermal expansion. jiir ia t <$ order to minimize rooting of scale. Lagging in Circumferential stress at bends, which is Col. 11* contact with the pipes should be chemically proportional to thermal expansion loading, • able * inactive. Final stress-relief treatment should be adds materially to circumferential stress due irk, mb * given to any parts that have been subjected to to steam pressure. Peaks of high temperature Corps of welding by heating them to and soaking them in operation increase thermal expansion stresses. Oh -H-

538 'E l e c t r i c a l R f.v t ê w October 4, 1946 National Load Curve Change in Peak Periods

■ N the accompanying diagram the load curve output capacity of 10,452 MW. This deficiency ® for the whole country for September 18th is accounted for as follows:—In overhaul, is compared with that for January 21st (repro­ 2,442; breakdown, 779; unsuitable fuel, 270; duced from the Electrical Review of February other causes, 224. The net effective capacity of 1 st), on both of which dates load shedding 6 737 MW was able to meet the demand, which became necessary owing to insufficient effective would have reached 7,137 kW at about 48 capacity of generating plant. On the earlier cycles, only through shedding 400 MW as an occasion, the load rose sharply at 8 a.m . and average over the critical half hour. during the next half hour increased to 98 per Load-Shedding Arrangements cent of the maximum, which was recorded at The Electricity Commissioners have asked 9.30, remaining fairly level for about four hours, electricity supply authorities to consider the slackening off just before noon. In the more extension of voluntary arrangements with in­ recent instance the 8.0-8.30 a.m. load was 93 dustrial concerns for the reduction of their demands at times of peak load. These arrange­ ments have sometimes involved the transfer of load from the morning to the afternoon but the Commissioners point out that changes in the incidence of the peak load period make further transfers of this kind undesirable. Where voluntary arrangements are insufficient to meet the situation undertakers should prepare a list of other power consumers whose supplies might have to be reduced. Regard must be paid to relative industrial priorities and in this connection advice should be sought from the Regional Boards of Industry (formerly the Regional Production Boards). Where there are no large industrial loads similar lists should be HOURS prepared, consideration being given to the necessity for avoiding complete interruption of :£ 1 supplies without adequate warning, particularly to factories, hospitals, etc. Wherever possible the Central Board will give I M IN U T E S I 246888887766544 adequate preliminary warning of the possible ELECTRIC CLOCKS BEHIND GREENWICH necessity for reducing load so that, in turn, the warning can be passed on to consumers who Comparative load curves for January 2!st and September 18th. Frequency curve relates to are likely to be affected. The Commissioners September 18th again urge the fullest possible use of surplus private generating plant to reduce the risk of per cent of the 9.30-10.0 figure and only 85-5 load shedding. per cent of the comparatively sharp peak, which did not occur until about noon. Thereafter the demand fell for a while to not much less World’s Power Production than the 8 a.m. figure before taking a downward TBJHE Monthlv Bulletin of Statistics which has plunge shortly before 1 p.m. ™ hitherto been published by the League of In the afternoon, load recovery was less pro­ Nations is now under the aegis of the United nounced than it was in January when, as usual Nations Organization, its first number being at that time of the year, a peak resulted from that for August last, which is largely devoted to the over-lapping of power and lighting loads details of the world output of electric power towards 5 p.m. Weather conditions on Septem­ between 1936 and 1945. Due to the demand for ber 18th were particularly unfavourable. Over munitions the production of electricity in most the whole countrv there was 100 per cent cloud countries underwent a marked increase during cover and an average temperature 7-21 deg. F. the war period. Thus, it is estimated that the below normal for the time of the year. output in the United States between 1939 and The capacity of the generating plant available 1944 went up by 73 per cent, in Great Britain between 11.30 and noon, roughly the period of and Canada by 43 per cent, India by 57 per cent, the cuts, on Wednesday, September 18 th and New Zealand by 39 per cent. Increased (Electrical Review September 27th) was 6,737 outputs are also recorded for Sweden, Portugal, MW, being 3,715 MW less than the gross Switzerland, Australia and Latin America. October 4, 1946 E l e c t r i c a l R e v ie w 5 3 9 Building Licences the work which they have carried out and not on the whole job. Guidance for Electrical Contractors The installation of machinery, etc., is not in J N May last Mr. L. C. Penwill, director of the itself subject to a building licence, but if a Electrical Contractors’ Association, circu­ concrete base is required or other building work lated to his members some notes on the arrange­ is undertaken in connection with the installation ments for the licensing of building work to a value of over £ 10 , a licence will be needed (including electrical contracting). He has now except where the work is authorized by an issued a memorandum on some further aspects annual maintenance licence. of the subject. Contractors are reminded that all work costing more than £ 10 , plus £2 a m onth on a non-cumulative basis, requires a licence. Forthcoming Events Work in private dwellings carried out with unpaid labour is exempt from the requirement. Monday, October 7th.— L o n d o n .— At Institu­ tion of Electrical Engineers, Savoy Place, 5 p.m. Licences cover specific work and if the stated Institution of Post Office Electrical Engineers. cost is likely to be exceeded a supplementary “ Piezo-Electric Quartz and its Use in Tele­ licence should be applied for. Generally communications,” by C. F. Booth and J. L. licences are issued in the name of building C reighton. owners but the main contractor or architect B r i s t o l . —University, Physics Laboratory, may make the actual application. 5 p.m. I.E.E. Western Centre. Chairman's Supplementary licences will only be granted address by R. W. Biles. to the original licensee. If, therefore, a sub­ Tuesday, October 8th.— L e e d s .—Electricity contractor finds that he has to do additional Department, Whitehall Road, 6 p.m. I.E.E. work he must ask the original licensee to apply North Midland Centre. Chairman’s address by A. G. Connell. for a supplementary licence and, in cases of urgency, telephone the facts of the position to Wednesday, October 9th.— L o n d o n . —I.E .E . the Regional Licensing Officer. The sub­ London Students’ Section, 2.30 p.m. Visit to the Electrical Research Association, Perivale. contractor should protect himself by confirming L o n d o n .—Royal Society of Arts, 6, John his request to the original licensee in writing, Street, Adelphi, 7 p.m. The Engineers’ Guild. setting out the facts, and should forward a copy Discussion, “ The Registration of Professional by registered post to the Regional Licensing Engineers,” to be opened by C. L. Champion Officer, quoting the number of the original Birmingham.—James Watt Institute, Great licence. He may then carry on with the work Charles Street, 6.45 p.m. I.E.E. South Midland unless he hears to the contrary from the original Students’ Section. “ The Stability of D.C. Machines,” by H. R. Ogle. licensee or the Regional Licensing Officer. Thursday, October 10th.— R u g b y .—Electricity Separation of Items Showrooms, 6.45 p.m. I.E.E. Rugby Sub- If applications for licences show the separate Centre. “ Frequency Modulation,” by Dr. K. R. Sturley. amounts for each sub-contractor the Ministry M anchester. — Engineers’ Club, Albert of Works will endorse the “ break-up ” on the Square, 6 p.m. I.E.E. North Western Centre licence. Provision for contingencies is not (Radio Group). Lecture summarizing papers generally included in licences, except in appro­ and lectures given at the Radiolocation Conven­ priate cases when an amount to cover attendance tion, by Dr. R. A. Smith. on specialist trades is included. If particulars Friday, October 11th.— L o n d o n .—St. Stephen’s of additional controlled materials are given Tavern, Bridge Street, S.W.l, 6.30 p.m. Elec­ when supplementary licences are applied for, trical Power Engineers’ Association (Meter the Regional Licensing Officer will deal with the Engineers’ Group). “ Low Load Accuracy,” application at the same time as the application by S. H. Richards. Birmingham.—Imperial Hotel, Temple Street, for a supplementary licence.. 6 p.m. Illuminating Engineering Society It is provided in Defence Regulation 56A (Birmingham Centre). Chairman’s address by that it will be a defence for a person charged R. Mackenzie. with exceeding the figure stated in a licence if Monday, October 14th.—St. Albans.— Peahen he can prove that at the time the work was Hotel, 3.30 p.m. Association of Supervising begun he had reasonable grounds for believing Electrical Engineers (St. Albans Branch). that the cost at completion would not exceed “ Fractional H.P. Motors,” by A. N. D. Kerr. the licensed amount. This might cover a Newcastle-on-Tyne. —Neville Hall, West­ situation in which a sub-contractor’s costs are gate Road, 6.15 p.m. I.E.E. North Eastern increased through waiting for materials or for Centre. Chairman’s address by T. M. Ayres. other trades to complete work. The contractor Tuesday, October 15th.— L o n d o n .— L.C .C . will be required to prove that he has done South-East London Technical Institute, 8 p.m. everything possible to keep within the authorized Electrical Engineering Society. “ Sir Ambrose Fleming, His Life, and Professional Work,” amount. This defence will not apply when work by Prof. MacGregor Morris. has been carried out beyond the scope of the M anchester. — Engineers’ Club, Albert licence. Specialists and sub-contractors, in the Square, 6 p.m. I.E.E. North Western Centre. case of conviction, are liable only for their own “ The Control of. Electrical Installation,” by work and penalties will be based on the part of W. R. Watson. 540 Electrical Review October 4, 1946 Design in Industry Study of Export Markets’ Needs tffcNE of the speakers in last week's Conference type and design for which the great h°me of Industrial Design held under the chair­ market would show a ready appetite. There manship of Sir Thomas Barlow, G.B.E., was were other markets with more marked individual Mr. Leslie Gamage (G.E.C.), chairman of requirements; it was in this direction that the B.E.T.R.O. and president of the Institute of smaller specialist firms would find their oppor­ Export. His subject was “ Design in Our tunities. Export Trade ” and in the course of his address His advice for a design policy for export was he said that having regard to the fact that a first to find the designer, train him, use him and sellers’ market existed at present we should not pay him rightly. Then study markets at home pride ourselves too highly because our export and abroad and find the right balance between figures seemed to have surpassed all official standardization and variety, being prepared to estimates. They were, however, an indication adopt special policies where necessary and of the virility of our manufacturers who were employ the services of smaller specialist firms. restricted by shortage of labour and certain It was important that this should be done m aterials. immediately. A great proportion of our increasing export Speaking of the various factors which influ­ trade was in capital goods. When the imme­ enced machine tool design, Mr. T. P. N. Burness diate arrears were overtaken the volume might (Wm. Asquith, Ltd.) said that the increased not be maintained. In many cases, too, these range of speed meant more power and greater goods demanded long credit which this country mechanical efficiency; a much greater range of could not offer under present conditions. As feeds was required. Centralized control would regarded consumer goods, some of our greatest increase production. All operating levers, future competitors were at present meeting the handwheels and electric push-buttons should hungry demands of their own home markets, be within easy reach of the workman and it was possible that later there would be impene­ should be capable of easy and safe operation. trable tariff walls. To facilitate maintenance all important parts should be readily accessible.. General appear­ Preparing for Future Struggle ance was also of great importance. This was a grim picture but it was warranted The conference was organized jointly by the by the facts. The British people, and British Council of Industrial Design and the Federation manufacturers were no exception, always rose of British Industries. to the challenge of a crisis when they knew the facts. But they were apt to be slow in action and it was essential to lay plans now for the Commonwealth Engineers tough battle of to-morrow. In this struggle we should take the initiative Conference in London and choose the ground most favourable to us; M CONFERENCE of Commonwealth en- this in our case meant quality—of materials, -4“ - gineering representatives, which has been workmanship and design. We had two great held in London at the invitation of the Councils assets—our long experience and exceptional of the Institutions of Civil, Mechanical and standard of human talent and capacity. With Electrical Engineers, has just been concluded. these we must endeavour to adapt ourselves to Invitations were sent to the major engineering our customers’ requirements. Differences in institutions of Canada, Australia, New Zealand, taste were probably greatest in the field of South Africa and India to send two delegates pattern and decorated design. In such industries from each of these countries to attend the as his own there was not so much scope for Conference (from September 14th to 28th) at individual designs, which were costly to produce, which mutual co-operation between the Institu­ but the engineering and metal-working undus- tions of this country and those in the Common­ tries could exploit all their qualities of elasticity wealth was discussed and plans were laid for con­ and adaptability. Mr. Gamage claimed that tinuing co-operation in the future. The three these industries proved in wartime their ability principal objectives were co-ordination of to adapt themselves quickly to ever-changing standards of engineering education and training; circumstances and this adaptability should be an improvement in the interchanges of scientific retained in their design and production policies. information and papers, and the discussion and They must not, however, go too far in pursuit evolution of a policy of development in the of variety of design or their costs -would become services which the engineer renders to the uncompetitive. com m unity. The speaker thought that an intelligent The discussions took place in rotation at the examination of the needs of our most highly three institutions, and the delegates also visited developed markets would, disclose frequently major engineering projects in London and else­ that we could capture custom for goods of a where and places of historic interest. yjctooer 4, 1946 E l e c t r i c a l R e v ie w 541 tOJIJIERtE and IMH STItV Municipal Radio Set Sales. Bolton Salary Dispute.

T last week's meeting of the Hammersmith difficulty it was decided to call for volunteers Borough Council the Electricity Committee from among women employees at Fulham who reported that a letter had been received from might be spared for an emergency period to go the borough electrical engineer of Fulham as to Manchester for two months to do the winding. secretary of the Joint Committee of Local Sixteen women volunteered and went to Trafford Authorities on Radio and Television. The Park on March 25th. These women were letter stated that the Joint Committee, com­ cleaners, Renovation Department workers and prising six Councils, had been formed to carry transport drivers. They were housed in a hostel on the business of selling and servicing radio outside Manchester where their comforts were and television receivers from municipal elec­ attended to by the canteen supervisor from tricity showrooms, and Hammersmith Council Fulham power station, who was one of the was invited to join. The Electricity Com­ mittee recommended that no action should be taken, but that the chief electrical engineer should submit a report at a later meeting with regard to the Electricity Department undertaking the sale of radio and television sets. Stoke Newington Electricity Committee has had a report from its Charges Sub-Committee in connection with the scheme being inaugurated by the Fulham Council for the sale of radio sets by local authorities. Certain manufacturers have promised to co-operate, but it is not considered desirable at this stage to divulge their names. The intention is that as many local authority undertakings as possible, both inside London and outside, should participate. Specimen sets have been inspected by members of the sub-committee who report that they appear up to the standard of those now on the market. The scheme was approved by the Council at its meeting last week. Recognition of Contractors Since the St. Pancras Electricity Committee decided that tenders for electrical installation work should only be invited from contractors of the National Register of Electrical Installation Contractors, the Committee has had a request from the Electrical Contractors’ Association, which has withdrawn its support from the Register, asking that that Association shall be given equal recognition with the National Arrival of the stator for the final turbine at Register when tenders are invited. Having Fulham power station heard a deputation from the Association, the party. The winding was completed in two Committee has decided to defer a decision months and the women returned on June 8th, until it has received further information from and were given a week’s extra holiday. the I.M.E.A. and at the same time has expressed A small informal ceremony marked the the hope that in the meantime the I.M.E.A. will arrival of the stator on the site. As many of the arrive at an agreement on the points at issue. women as were available were at the power The Committee is also of opinion that strong station gate and afterwards Mr. W. C. Parker, representations should be made to the Ministry the borough electrical engineer, entertained of Fuel and Power urging the introduction of them to light refreshments in the canteen. The compulsory registration of all electrical installa­ stator, which weighs about 95 tons, was one tion contractors in order to protect the public week on the journey from Manchester. The against unsatisfactory workmanship. installation of the fifth turbine is progressing to schedule and is due to take load at the end of Fulham Stator Arrives N ovem ber. The arrival of the stator of the final turbine at the Fulham power station on September 16th Tin Price Increase marks the completion on time of an unusual The Ministry of Supply announces that as effort. In March the Metropolitan-Vickers from September 26th, the basic price of tin Electrical Co., Ltd., informed Fulham Council metal sold by the Non-Ferrous Metals Direc­ that owing to acute labour difficulties the com­ torate for delivery in the United Kingdom was pletion of the alternator would be behind increased from £300 to £380 10s. per ton. At schedule, the chief contributing factor being the same time the basic price of tin metal sold the winding of the stator. To overcome this f.o.b. U.K. port for export from the U.K. was 4, 5 4 2 E l e c t r i c a l R e v ie w October 194b

increased from £357 to £380 10s. T he basic referred to single-piece and tw o-pie, ^ome price is for metal of minimum 99 to 99-75 per refractors, respectively. Owing to ■ , cent tin content, and prices for all other grades hearing the application the ong,na^P ^ will be varied correspondingly. already expired and the order too Holders of valid licences to purchase tin for of a grant of new letters patent valid for five delivery in the U.K. or for export from the years from the date of expiry of 8 U.K. granted on or before September 25th, patents, July 29th, 1945. may on application to the Directorate, 20, Albert Street, Rugby, cover themselves by Demonstrators’ Salaries purchases where they have not already done so In view of the fact that no definite information against such licences up to and including has yet been submitted from the body dealing October 9th, at the Directorate's selling price with the scale of salaries of electrical demon­ ruling on September 25th. The selling price of strators, the Establishment Committee of Hack­ Straits tin for export has been raised as from ney Borough Council has recom m ended the September 26th, from £351 to £372 per ton ex adoption of provisional scales. Applications works Penang/Singapore. are to be invited for a senior demonstrator at a salary in accordance with Grade I of the A.P.T. Cable Makers’ Guaranteed Week Division, and a demonstrator at a salary in We reported in our issue of May 24th last accordance with the Clerical Division, commenc­ that the Joint Industrial Council for the Electrical ing at £252 per annum in each case, plus London Cable Making Industry had reached an agree­ weighting allowance and current cost-of-living ment for the institution of a guaranteed 34- bonus. hour week in the industry. The memorandum of agreement has now been printed and copies Iron and Steel Sheets are obtainable from the J.I.C. at High Holborn The dem and for steel sheets is m uch in excess House, 52-54, High Holborn, London, W.C. 1. of supply, and it has been found necessary to introduce a separate allocation for them. In “ Queen Elizabeth” Overhaul futuFe, “ M ” forms authorizing the acquisition During the war years the Cunard liner Queen of steei will only be available for sheets when Elizabeth went through some very strenuous specifically marked. In the past, “ M ” forms times as a troopship and before being restored for steel have been generally available for pur­ to her normal service had to be subjected to a chase of sheets, and as a result there is an thorough overhaul. Among the equipment to excessive volume of orders on makers’ books, which is interfering with the smooth operation of the distribution scheme. To remedy this, it has been arranged, with the co-operation of the industry, that all existing orders which cannot be executed by October 31st will be scheduled for review by the authorizing Department, and deliveries after that date against such orders will only be made where they have been re­ authorized. Consumers will be notified by their suppliers of any orders so scheduled for review. This does not apply to existing authorized orders for export or for replacement of merchants’ stock under licence, for which different arrange­ ments are in operation. The Bolton Vacancy The Bolton Electricity Committee is persisting Inspection of the warping-winch m otors on the in its refusal to offer a salary of more than “ Queen Elizabeth ” £1,600 a year for the post of borough electrical engineer. The last day for receiving ap­ which special attention was paid was the great plications for the position was M onday last amount of electrical plant described in the week, and on the following Wednesday the Electrical Review of November 16th, 1945. Committee met to consider them. There were The accompanying illustration shows the final inspection of the motors on the warping winch, five and it was decided “ that no appointment a part of the equipment provided by Laurence, be made from among such applicants.” Scott & Electromotors, Ltd. Very little was Resolutions were passed by the Committee found to be needed beyond routine maintenance protesting to the Minister of Fuel and Power work and the replacement of wearing parts, against the action of the Standing Joint Com­ such as brushes. mittee of the Associated Municipal Electricaj Engineers and the Electrical Power Engineers’ Association in publishing a notice requesting Refractor Patent Extension engineers not to apply for the post on the On June 8th, 1946, Mr. Justice Vaisey sitting grounds that the position was not advertised at in the Chancery Division granted an application a salary in accordance with the agreement made by Holophane, Ltd., for the extension of the by the National Joint Committee of Local life of two patents covering the design of dome Authorities and Chief Electrical Engineers refractors for street lighting purposes for a (Electricity Supply Industry). The protest is period of five years. The two patents (Nos. made on the grounds that the Corporation is 337398 and 398419) were taken out in the names not a party to the agreement and has never of Holophane, Ltd., and Dr. S. English and been a constituent member of the District October 4 , 1946 E l e c t r i c a l R e v ie w 54.1

Chief Fleiir^*tiec Local Authorities and Work Orders by the end of this year. Notices mrni ¡t i Engineers, to whose establish- will be issued to the individual undertakings that opposed. The Committee contends which are to be de-scheduled, giving them at /!sls prescribed in the agreement is least a month’s notice. Until individual de­ unreasonable and unsound, and by virtue of scheduling takes effect the provisions of the the operations of the Central Electricity Board Essential Work Orders remain in force for all a salary may reach a scale which is out of employers and workers in scheduled under­ S.ru°P wtlon to I *16 responsibility for the work. takings. I he Minister is requested to intervene with a view to the agreement being rescinded or considerably modified. Industrial Lighting Exhibition A copy of the resolution is to be forwarded A “ Lighting in the Factory ” exhibition to all municipal authorities in England and commences in the Industrial Demonstration Wales controlling electricity undertakings, with Room of the Manchester Corporation Electricity a request for support, and to the Members of Department showrooms, Town Hall, Man­ Parliament for Bolton. The decision of the chester, on October 7th and will continue until Electricity Committee was to come before the October 18th. In order to illustrate the value meeting of the Town Council on Wednesday last. of good industrial lighting, as required by tire This meeting of the Committee considered Factory Lighting Regulations, 1941, exhibits applicants for the post of deputy electrical of machines inadequately illuminated by the engineer and appointed Mr. E. W. Hewlett, at a old-fashioned methods are contrasted with commencing basic salary of £818, rising to modern fluorescent and incandescent installa­ £867 a year. tions. Two talks have been arranged, one on factory lighting and its legal requirements, and Electrical Machinery Traders the other on modern applications of fluorescent lighting in industry. It is announced by the Association of Electrical Machinery Traders that the chairman, vice- Electrical Training in the Navy chairman and treasurer of the Association have visited the Prague Fair to inspect electrical To train officers and ratings for the “ L ” or machinery exhibited there. If they are satisfied Electrical Branch, which was established as a as to the merits and availability of the equip­ separate specialist service last January, H.M.S. ment they will probably approach the Board Collingwood at Fareham is being converted into of Trade with a view to securing importation of a Naval Electrical School. Eventually all machinery necessary for the rehabilitation of the officers joining the branch will undergo six home trade. years’ training, the first three of which will be Members of the Association have been asked spent at Cambridge University. to make it a general practice not to charge higher prices for second-hand plant than they A.S.E.E. Visit would normally quote for equivalent new A demonstration has been arranged to-morrow equipment. Where special circumstances justify afternoon (Saturday, October 5th) at the South higher prices an explanation should be given when quoting. London works of Londex, Ltd., for the benefit of visiting members of the Association of Super­ The Association’s first annual dinner is to vising Electrical Engineers. Among the equip­ be held at Grosvenor House, Park Lane, ment to be displayed will be electrically lighted London, W.l, on November 27th. off-shore buoys, various navigation lanterns for air and sea use, a system of electrical remote London Electricity Tariffs control of water level without pilot wires and The charges for electricity in the London general products of the firm. and Home Counties area are so varied that a publication which shows the tariffs of all the Supply Industry Workers’ Wages electricity supply authorities in the area will prove of considerable value to electricity supply The County of London group of electricity engineers. The London and Home Counties supply companies, numbering twenty-one, have Joint Electricity Authority has now issued a agreed to recognize the Clerical and Adminis­ Statement (No. 14) of published tariffs for the trative Workers’ Union as one of the negotiating supply of electricity, hire of meters, etc., in bodies for their employees. The union’s force in the London and Home Counties claim for recognition had previously been Electricity District as at July 1st, 1946. This refused by the companies and a strike was is divided into four sections, dealing respectively threatened. with tariffs of local authorities, tariffs of com­ The companies stated that they were prepared pany authorized undertakers, tariffs of the to meet representatives of the union on Thursday J.E.A., and meter rentals and minimum charges this week to discuss claims regarding salaries of all the supply authorities. Copies can be and conditions. The union seeks a basic salary obtained from the J.E.A. (Brettenham House, scale, with grading of all staff above the Lancaster Place, W.C.2) at 5s. each. minimum, the establishment of a 37^-hour week, payment of overtime rates, and certain Withdrawal of Essential Work Orders concessions with regard to holidays and sickness. Suggested minimum wage scales which will The Ministry of Labour and National Service form the basis for discussion between the union has informed organizations representing em­ and the companies are:—For those who carry ployers and workers concerned that the ship­ out routine work to clearly defined instructions building and ship-repairing industry (including under supervision, £78 at the age of 16 years, the barge building and barge repairing industry) rising by stages according to age to a minimum will be withdrawn from the scope of the Essential rate of £325 at the age of 30. These rates are 5 4 4 E l e c t r i c a l R e v ie w October 4, 1946

plus cost of living payments which at present the gas industry in relation to local gove • are 23s. a week for adults and 11s. 6d. for He said that at present two-thirds ot e juniors. Other proposals are that there should undertakings were owned by comp„ciderpH be two senior and four supervisory grades, with the rest by local authorities salaries rising to £600 a year ; two miscellaneous that the company-owned undertakings grades for those whose work is not entirely be taken over by local authorities or g P clerical, with salaries ranging from £247 to local authorities. He favoured regional £325 : and a special grade for shorthand typists organization with overall nauonal control. and similar workers rising in seven stages from T oo much centralization would result in a £156 to £273. control insensitive to public requirements and “ remote from healthy influence. Demonstrator Training at Gravesend While Alderman Mathewson (.Chester) advocated nationalization of gas and electricity Mr. G. V. Harrap, general manager and so as to make them available to everybody, the engineer of the Gravesend Electricity Depart­ Mayor of Clitheroe (Alderman J. Wilkinson) ment, has decided to establish a training scheme opposed nationalization. He said that his own for demonstrators. Girls entering at 16 years Council supplied gas, electricity and water almost of age with their School Certificate, will have a as cheaply as any authority in the country general training in costs and accounts, and yet made a profit. correspondence and clerical duties, and will spend some considerable time in the showrooms Automobile Lamp Prices dealing with consumers’ complaints. They will, under the chief demonstrator, receive tuition in Owing to very substantial increases in pro­ operating equipment and on demonstrations. duction costs, E.L.M.A. members have found it They will have to go to evening classes to take necessary to advance list prices of group II the City and Guilds Certificate in cookery, (autom obile) lam ps as from O ctober 1st, 1946. laundry and housecraft, and will study for the E.A.W. Demonstrators’ Certificate. All course Advertisement Correction fees will be paid by the Corporation and the girls will, after a probationary period be inden­ Owing to a printer’s error in the advertisement tured just like boys training to be craftsmen pages of our issue of September 13th and 20th or junior engineers. They will receive appren­ under “ For Sale,” it was stated that James tices’ rates of pay approved by the trade union. McKenzie, Ltd., had headlamps for sale. This should have read hand/amps. Service Unit Prices In the notes on the activities of E.D.A. in our Trade Publications September 13th issue we stated that the price Evershed & Vignoles, Ltd., Acton Lane, of the House Service Unit was 69s. 4d. each for Chiswick, London, W.4.—Technical brochure quantities of 2,000 and over. The figure should (No. 212a) combining full details of the "Bridge- have been 69s. 6d. Meg” as well as the “ Bridge-Megger ” testing sets for convenient comparison of their respective Consulting Engineers ranges, including circuit diagrams for their use The Association of Consulting Engineers has for insulation testing, the measurement of issued a new list of members, corrected to May, conductor resistance and cable fault location by 1946. This gives the Committee and officers the Varley loop method. for 1945-46, a list of engineering subjects in General Electric Co., Ltd., Magnet House, which its members specialize, a list of members Kingsway, London, W.C.2.—A leaflet describing and firms, non-practising members, and a safety-type electrode holders for a.c. arc welding. geographical list. Trade Announcements Lighting in Mines The Cardiff branch of James Howden & Co., Mr. J. W. Mould, in his presidential address Ltd., engineers, of Glasgow, will re-open on at the annual meeting of the North Staffordshire O ctober 6th, at 91/93, St. Mary Street, Cardiff. branch of the Association of Mining Electrical This branch will be in charge of Mr. W. Mac- and Mechanical Engineers at Stoke-on-Trent, Owan, who will be responsible for the said that their industry did not lend itself to South Wales and South West England area. “ music while you work ” conditions. One Mr. G. F. Bolton and Mr. C. A. F. Shapcoti improvement which he thought would tend to have formed B. and S. Supplies, Ltd., eleqtrical make conditions a little better, however, was a factors and distributors, with offices at 42-43, great extension of mains lighting underground. Manchester Road, Swindon. Both were at one He believed it would help to increase the time commercial apprentices with the G.E.C. efficiency of the workers and reduce the number Later Mr. Bolton was with Reyrolle’s, and Mr. of accidents. Good and well lighted roads Shapcott, after military service, with Morphy would certainly help to make conditions better Richards, Ltd. and increase output with safety. Possibly, in B. Finch & Co., Ltd., announce that their the near future they would see mains lighting Electrical Department is now at 238, Waterloo at the coal face. Road, London, S.E.l (telephone: Waterloo 41 17). Public Ownership Frank Westerman (Wholesale), Ltd 94 Dale In the course of a conference held last week End, Birmingham, 4 (telephoneColmore at Eastbourne by the Association of Municipal 4252/3) have been appointed sole main distri­ Corporations a paper was read by Councillor butors for Birmingham and district by Monmore C. E. P. Stott (Manchester) on the position of Conduits, Ltd. October 4, 1946 E l e c t r i c a l R e v ie w 545 Farm Supplies Amenity Preservation Five-Year Plan Costing £72,000,000 Report of the C.P.R.E. f|7HF Liaison Committee of the National |NE point in a statement of policy appearing Farmers Unions and the Electricity Supply © i the annual report for 1946 of the Council Industry, at a meeting held in London last for the Preservation of Rural England is that Friday, adopted proposals for providing supplies low-voltage electricity transmission should be of electricity to all farms (including farmhouses, underground wherever possible and practicable. farm buildings and adjacent cottages) as a Expanding on this theme in another part of the matter of national importance. report, the Council says that it has always been The Committee, comprising representatives the policy of the C.P.R.E. to encourage the use of the National Farmers’ Unions of England, of electricity in rural areas. Given the choice Scotland and Wales, the Incorporated Municipal of a supply of electricity by overhead distri­ Electrical Association, Incorporated Association bution or no supply at all, it is unreasonable of Electric Power Companies, Provincial to expect people not to demand a supply even Electric Supply Association and the Conference at some cost to amenity. For that reason the of Joint Electricity Authorities and Joint Boards, C.P.R.E. and its branches have a working has produced a five-year plan. The number of arrangement with the electricity undertakers in farms still without a supply is taken as 150,000 most areas to try to ensure that distribution and the estimated cost of the scheme is put at takes place with the least possible harm to the £72,000,000. landscape. Priority for Equipment The Council cannot, however, fully accept the argument that overhead distribution is It is proposed that concerted effort shall be inevitable in all cases, or that it is necessarily made immediately to obtain awards of priorities the mo.st economical in the long run. Even if by the appropriate Government Departments it can be proved to be cheaper in specific cases, for the materials required. It is felt that priority this should not be the sole criterion. “ It is rare should be given to farmers for the necessary to find any disfiguring overhead distribution wiring, motors and apparatus equal to that for in urban areas, where the return on the supply new housing schemes. Where practicable for industrial and domestic use justifies the supply authorities should take full advantage provision throughout of underground distribu­ of the relaxation of the Overhead Lines Regula­ tion, while still producing a handsome profit. ” tions and as far as possible terms for a supply The same stage of co-operation has not been should cover the costs in some more suitable reached in respect of the siting of large generating manner than the requirement of heavy capital stations and the Council has found it necessary contributions or guarantees. The adoption of to intervene and oppose the promoters on a separate farming tariff is suggested, preferably several important occasions. In this connection, of the two-part type, with a “ unit ” charge if reference is made to the Durham, Lincoln, Lea possible of not more than Id. for all purposes. Valley, Llanover and Kingston stations. The There should be as few restrictions as possible Council says it “ can see no valid reason why on the size of motors and other apparatus. electricity supply should ipso facto take pre­ The N.F.U. will use every endeavour to get cedence over all other national interests. . . . all farmers to co-operate by facilitating the They must be challenged in every case, where granting of wayleaves and by making full use the circumstances warrant it, to prove a para­ of the services provided. It is proposed to mount need for their claim for precedence in a embark upon a publicity campaign to show the choice of site. Co-operation, on the other hand, advantages of electricity on the farm. should result in the avoidance of serious delays On the assumption that the average farm and interference with development.” requires a single-phase service line of say 600 yards, 900,000 poles and 100,000 miles of Midland Electrical Engineers’ Ball copper conductor will be required. At an average of £300 per farm, the total capital HE annual ball of the Midland Electrical expenditure incurred by supply authorities in TEngineers’ Association will take place on providing the service would be £45,000,000. November 22nd, in the Grosvenor Room of State financial aid will not be sought. The the Grand Hotel, Birmingham. As the usual average cost of wiring the farmhouse, farm mailing list of pre-war visitors is not available, buildings and cottages is taken as £80, and the it is hoped that this notice will serve in its stead. cost of motors and other apparatus as £ 10 0 , Mr. F. W. Lawton, city electrical engineer giving a total of £27,000,000, which would and manager, Birmingham, is the president, include 750,000 11. P. of motors. and Mr. F. W. Martin, the chairman. Applica­ hi, fi# Representatives of the electricity supply com­ tions for tickets should be sent to either of the panies have given their approval to the scheme above gentlemen, any member of the Committee, but two constituent members of the Liaison or the hon. secretaries, Mr. H. Hooper, Central Committee the I.M.E.A. and the Conference of Electricity Board, 53, Wake Green Road, Bir­ C0 Joint Electricity Authorities- have not yet had mingham, 13, and Mr. W. J. Bird, General full opportunity to consider it., Electric Co., 125, Moor Street, Birmingham. 546 Electrical Review October 4, 1946 Telecommunication Practice Impressions from a Visit to North America

EPRESENTATIVES of the Press met at telephone system for motor-cars. C alls made the G.P.O. in London last week under the from a moving motor-car to the local telephone chairmanship of Sir Drummond Shields (Public exchange at Washington were extended success­ Relations Department) with Mr. Townsend fully by landline to New York and thence by (head of the Telecommunications Section) in the transatlantic radio telephone to Middleton, attendance to listen to Mr. W. A. Burke (assist­ Lancashire, and to Twickenham London. Th.s ant Postmaster-General) and Mr. A. J. Gill service was to be made available in 47 cities (deputy engineer-in-chief) outline the impressions 4,500 sets to be installed in cars by 1947 and they formed during a recent three weeks’ visit 19,000 promised. ... , r to the United States and Canada. So far as could be ascertained the number of The plant and operating methods of the Long intending telephone subscribers awaiting service Lines Department, the controlling centre of the in N orth A m erica did not ap p ear to be very U.S. trunk telephone system and overseas radio­ different from that in the United Kingdom. In telephone services were not appreciably different general it amounted to from 7 to 10 per cent from those in this country, but there did not of the number of telephones already connected; appear to be such difficulty in the recruitment in the United Kingdom the proportion was of female operators as here, and the speed of about 8 per cent, representing betw een 310,000 service available on most trunk routes in the and 320,000 applicants compared with between United States was in consequence greater. 1-8 and L9 millions in the United States. In New York they saw demonstrations of the During the last six months new telephone con­ working of the new automatic telephone system nections in the United Kingdom have averaged using the “ crossbar ” switch now introduced 70,000 monthly. in a large number of exchanges; also develop­ A method of meeting the demands for trunk ments in dialling applicable to the “ crossbar ” circuits by splitting existing circuits temporarily system and a working demonstration of the into two, each of admittedly inferior quality, automatic ticketing system. Other demonstra­ seemed worth examining but the position here tions included equipment designed for use on might not necessitate this expedient; in America co-axial cables and a radio link transmission the lines were longer and new circuits were very for television programmes using a frequency of difficult to provide. 7,000 Mc/s. Four links of 21 miles and three In general the visit indicated that no major intermediate amplifiers were used to transmit a development had taken place in North America test programme originating from the N.B.C. in the last ten years which put the United In Washington, by courtesy of the Chesapeake Kingdom in a backward position. On the other and Potomac Telephone Co. and of the Federal hand, there were a number of developments Communications Commission, they were per­ undergoing trials which might prove to be of mitted to test before it had been licensed for importance and which should be watched public service the operation of a new mobile closely.

Swedish Electrical Progress a T the opening meeting on September 25th of neutral point, involving the use of arc-suppres- 4™ the twenty-eighth session of the Edinburgh sion coils, as it is working very near the stability Electrical Society, the president, Mr. E. limit, so that the use of reactance to limit short- Openshaw Taylor, delivered his address on circuit currents is not possible. Values of short- “ Some Electrical Developments in Sweden.” circuit MVA of 3,000 or more are common After mentioning the electrified railways, which so that the tank type of oil circuit breaker is now carry about 80 per cent of the total traffic, regarded as obsolete and has been replaced by and visits to the ASEA works at Vasteras low-oil-content or air-blast breakers. The rate and Ludvika, Mr. Taylor spoke of power of load growth will necessitate the addition of generation and transmission developments. about one trunk line per year to the above net­ Nearly all the water power, which is almost the work and some will be considerably longer than sole source of energy, is in the north whereas 300 miles. Such a multiplicity of lines would the load centres are chiefly in the south, necessi­ soon prove unmanageable and it is therefore tating power transmission over distances of an urgent necessity for Swedish engineers to several hundred miles. A 220-kV network develop, within the next few years, transmission comprising 1,440 miles of line is at present in schemes operating at 400 or 500 kV, either being and consists chiefly of four trunk lines 3-phase a.c. or by d.c. Both proposals are from north to south, about 300 miles long. being examined and the latter has already gone That network differs from the British grid so far as the setting up of an experimental system in that it operates with an isolated 90-kV, 30-mile line to transmit 6,000 kW. October 4, 1946 E lectrical Review 547 ELECmillTY SUPPLY

Calls is Croydon Tariff Revision. Trolley-buses and Load Shedding. Ml leltfe tidal si«» Barm outh.—Proposed Submarine Cable.— system by 4-core cable. Other requirements md them As part ol its scheme for the electrification of are £5,162 for a supply extension to the village t o M i « . South Merionethshire the North Wales Power of Pydew in the Llandudno urban district ; Co. proposes to lay a submarine cable across £6,164 for substations and switchgear al L o n d o n .' Mawdtlach Estuary at Barmouth. At a meeting Rhos-on-Sea, Old Colwyn and Penmaenhead; le in 11 s of the Urban District Council a petition was £6,657 for substation and mains, Mochdre is bj 1M submitted from fishermen and boatmen urging housing estate; £4,243 for h.v. cable extension that an alternative route should be considered. and new substation, Llysfaen; £1,825 for i the mit A deputation contended that the cable would centralized control apparatus; and £1,941 for awaiting f interfere with the only anchorage and moorings transformers. available for shipping. Councillor Morris Croydon. — Uneconomic Charges. — It is pear to fe G. Roberts, of the Merioneth Industries Com­ ed Kingdoa reported that the present two-part tariff running mittee, said that a survey was being made with charge of 0-6d. per kWh is insufficient to cover 1 to IÖ p. a view to the reopening of some of the North the cost of production; to do this it should be Ireadyto» Wales ports, and Barmouth was included. It increased to at least 0-7d., but even at this ■ proponii! was decided to ask. representatives of the com­ figure the selling price is so close to production gbetwtall pany to meet the Council, and to acquaint the cost that the discounts which have hitherto Board of Trade with the objections of the ared »ith bo been allowed to the larger consumers will have fishermen. be United k to be discontinued. To satisfy the Electricity Birmingham.— Reduced Coal Stocks. — In an ire ttlepte, Commissioners these increases will have to be appeal to consumers to exercise the strictest compensated for by reductions in other charges loin bate ¡15 economy, the Birmingham Gas and Electric The Committee therefore recommends the Supply Departments state that during the past revision of charges which after the compensating demands fur year the consumption of gas has risen by 10 reductions will yield a net increase of £1,854. circuits la jj; per cent and that of electricity by 15 per cent. Connection of Firfs to Lighting Circuits. Owing to the greatly reduced coal stocks there —As consumers have been purchasing 1-kW is a grave danger that supplies will have to be tit the p tsi’ii electric fires with the apparent intention of restricted unless the co-operation of consumers using them from lighting circuits, the Electricity pedioi: inAs is secured. Last winter the gas and electricity Committee has decided to issue a general e« arnatsB! undertakings had reserves sufficient for four warning to the public regarding the danger and seven weeks respectively. Heavy demands which may arise from this practice. ad ttasi in the spring reduced these stocks to about one A irport’s Increased Requirements.—The ie ic W ti week’s supply. Electricity Committee is to provide an increased supply to the airport at a cost of £1,464, towards ticb put ice Blackpool.—Transmission Improvements.— To improve the transmission system the Elec­ which the Air Ministry will contribute £1,000. anon. On®' Cooling Tower Improvement. — A new hff of dfteiis tricity Committee has approved a scheme costing £270,000, to be completed over an irrigation system is to be installed in one of eight-year period. It will entail laying larger the cooling towers. M l bent cables from Peel Corner to the Blackpool works, Exeter.— Supply to Estate. —At a meeting of and installing modern transformers. the Electricity Committee the city electrical engineer reported that four of the tenants on Brighton.— Estate Scheme.—The Electricity the Highfield estate, Topsham, were not pre­ Committee is to provide a supply at a cost of pared to give the required guarantee of minimum £38,330 to the Hollingbury estate, where 1,000 payment, nor were the remaining residents dwellings and twelve factories are to be erected. willing to increase the amount of their own ease of 11*7 Chester.— Increased Charges. — The City guarantees. The Electricity Commissioners were i^t net’47 Council is to revise electricity tariffs to bring in of opinion that a supply should nevertheless stance to f i ’ £28,000 to meet an estimated deficit of £20,000. be made available to the estate, and the Com­ He. Wb* The decision does not necessarily mean that all mittee agreed to this. tariffs will go up by 10 per cent but that charges Cookers in Council Houses.—The Housing r bob t»® will be more equitable. Committee has rescinded a decision to provide oil arc®-® gas or electric cookers free of charge at the iHSlffllti® Cleethorpes. — Cheaper Electricity. — As from October 1st, the Scale A flat rate lighting choice of tenants in the houses to be erected ibietbs II charge in Cleethorpes is being reduced from 5d. on the Wonford estate. Instead, points will be to 4Jd. per kWh, and the fixed charge by 15 provided to enable the tenarlts to hire or pur­ per cent. chase gas or electric cookers as they desire. Similar action will be taken in the case of the Colwyn Bay.—Development Schemes.— Pinhoe estate. gaifrff* Having considered a report on rural develop­ Fulham. — Gas-W ashing. — Experiments in 05 ment and extensions submitted by the borough an d it b electrical engineer and manager (Mr. J. V. connection with the gas washing at the power

100 of these installed throughout the borough costs with the proposed new elef?” pg?r(Jie"m on the simple hire basis. The apparatus, which He was awaiting information from tn has been on circuit for periods up to ten years, Board as to the trend of oil Prices\ whether is beginning to cause a great deal of trouble in Cooker Hire Query .-Thequestion whether maintenance, and the tanks in which the heaters it was permissible for Council hou* raj*e(t at are fixed have frequently to be replaced. The hire both gas and electric cookers was raised at Committee is of opinion that the heaters should a meeting of the Electricity Committee, and it be offered to the consumers free of further cost was decided to consider the point when details in the same way as kettles, irons, etc. of specific instances were obtained. Isle of Man.—W ater-Power Scheme.— A St. Pancras.— V ertical Mains.—Having con­ commission of experts appointed by the sidered the provision of the necessary vertical Lieutenant-Governor has visited- the island to mains, services, etc., in connection with the examine the technical details of a scheme for erection of blocks of flats, the Electricity Com- developing an electricity supply from water mittee says that it is very desirable that the power. Council should adopt a standard policy and it Leicester.— Tariff Increases. —The Elec­ recommends that such mains should be provided tricity Committee’s recommendation for an free of charge. . . increase of O ld. per kWh on the domestic Supply Extension. — The Electricity Com­ tariff and ^d. on industrial and other tariffs has mittee is to provide a supply to London House, been approved by the City Council. The Guildford Street, at a cost of £42,292, subject increased tariffs will operate for the Christmas to the Dominion Students’ Hall Trust contribu­ quarter. ting £15,000. Middlewich.—Lighting Scheme Approved.— Stafford.— H ire-Purchase Scheme.— The Cor­ The U.D.C. has approved a scheme for improved poration is to resume hire-purchase of electrical lighting in Holmes Chapel Road, Brook’s Lane, appliances and extend from three to five years Canal Terrace and King Street, submitted by hire-purchase repayments in respect of cookers the Mid-Cheshire Electricity Supply Co. and washing machines. Morecambe. — Increased Charges. — The Stoke Newington.—Apparatus Repairs.— Electricity Commissioners have intimated that The Electricity Committee has prepared a they are now in favour of increasing the charges scheme for the establishment of a department to the extent suggested by the Electricity to undertake repairs to consumers’ apparatus. Com m ittee. Improved Street Lighting. —The Highways Musselburgh.—A ll-electric House Charges. Committee is to proceed with another stage of —The Musselburgh & District Electric Light & the street lighting scheme at a cost of £6,000. Traction Co. has informed Musselburgh Town Tynemouth.— A lteration of Meters.—The Council that the average consumption at borough electrical engineer, reporting on the Council’s all-electric houses per day was replacement of two-coil prepayment meters, 6-2 kWh, at an average all-in price per kWh stated that the alteration of such meters for of 1 035d., or less than 6Jd. per day. use as quarterly meters would meet the require­ Norwich. — Loans. — The Electricity Com­ ments of the Act. The Electricity Commis­ mittee is seeking sanction to borrow £30,000 sioners had approved the proposed alterations for mains and services, and £15,000 for trans­ and orders had been placed for material for formers and switchgear. converting 700 meters at an average cost of Paisley.—Immersion Heaters.— T he T ow n 3s. each. Consumers would have the choice Council has adopted proposals by the electrical of being assessed on the flat rate or on the engineer and manager (Mr. Daniel Ross) for residential tariff and would be charged on a the installation of immersion heaters (circulator quarterly basis. The cost of the replacement type) in all new Corporation houses. These of two-coil meters by prepayment meters circulators are to be controlled by a time delay would be £54,000, while the cost of altering the switch instead of the usual thermostat. It is meters would not exceed £3,000. The Electricity anticipated that approximately 1,000 permanent Committee approved the proposal. houses will be erected annually during the next ten years. TRANSPORT Poplar.— Loss on Year’s W orking. — The Glasgow.— Railway Electrification. —The Electricity Committee reports a net deficiency of Corporation Planning Committee is to open £21,672 for the year. Various tariff increases discussions with the railway companies and the are recommended. Ministry of Transport with regard to the L o a n s .—Application is to be made for possibility of electrifying the local Glasgow sanction to borrow £20,000 for mains and services and the railway lines to the coast. services, and £ 12,000 for wiring installations. Newcastle-on-Tyne.— Trolley-buses. —The Purchase of Apparatus. —The Electricity City Council is being recommended to purchase Committee has approved estimates for the next fifty trolley-buses. twelve months of £5,000 for wash boilers, South Shields.— Effect of Load Shedding.— water heaters, kettles and fires, and £ 10,000 for The T ransport C om m ittee, in conjunction with cookers. the Electricity Committee, is working out a Council Chamber Lighting. —It is proposed plan to ensure that the town's trolley-bus service to instal a fluorescent lighting system in the is maintained during periods when electricity Council Chamber. supplies are cut by order of the Central Elec­ Portland.—Diesel Plant.— The water en­ tricity Board. The Committees’ action was gineer recently reported to his committee that taken following a recent incident when trolley­ he had obtained prices for Diesel generating buses were held up during a busy period when plant for the waterworks to compare generating electricity supplies were cut off. October 4, 1946 E l e c t r ic a l R e v ie w 549 lti:< lvM IM'KOIH I'TIOXS Notes on New Electrical and Allied Products

Electrode Holder The cast bedplate is accurately machined with all locations for the headstock, capstan r l 1HE G eneral Electric Co., Ltd., M agnet head, tailstock unit, etc., jigged for interchange­ * House, Kingsway, London, W.C.2, is now ability. The spindle is balanced and will run manufacturing a safety-type electrode holder continuously at 6,000 r.p.m. without vibration, which is simple, robust and inexpensive, besides being fully capable of absorbing the violent complying fully with the recommendations of the torque reactions resulting from high speeds and rapid reversal. The rotation of the turret is automatic, foolproof and positive and an anti­ spin device prevents over-indexing. The cutting tools are mounted in reversible adjustable tool holders and tool height is regulated by a special device. Length and diameter control stops are incor­ porated in the turret, as well as multiple back stops. The tailstock body swings from front to back and in addition to the standard tools, will carry an auxiliary turret fitted to the standard tailstock shaft and having eight tools. The machine is driven by a special Higgs motor of a 4 to 1 ratio, 2-speed reversing type. Electrical Thermometers Safety type electrode holder for a.c. arc welding The range of temperature controllers, contact- making thermometers and mercury switch Factory Department. Capable of continuous relays catalogued by Engel & Gibbs, Ltd., welding duty at currents up to 300 A,’the holder 983, Finchley Road, Golders Green, London, is designed to operate with electrodes up- to N.W.ll, include combinations which, it is 4 s.w.g. It consists of a body of tough moulded claimed, have not hitherto been manufactured insulation, terminating in a head of anodized in this country. The thermometer “ bullets ” aluminium alloy provided with cooling fins. are of two kinds; the preset type, which cannot The electrode is inserted in a nozzle at the extremity and is firmly gripped by a spring- loaded copper plunger, which also conducts the current to it. The welding cable socket is screwed (and locked by means of a grub screw) into a terminal block. The inner ends of both the electrode-gripping plunger and the cable terminal block terminate in silver-faced contacts, which are efficiently insulated from each other and are separated by a space of J in. The supply is connected to the electrode by depressing a lightly loaded spring lever. This operates a self-aligning silver-faced bridge piece, which makes contact with the incoming terminal block at one end and the copper plunger at the other. On releasing the lever a spring causes the bridge to break contact, making the holder “ dead.” Electrodes can be inserted and with­ drawn only when the switch is in the safety position.

Multi-tool Repetition Lathe Incubator therm om eters, showing plug-in head (left) with regulator, and rotating-head adjustment (right) A multi-tool lathe, marketed by K e r r y ’s (G reat Britain), Ltd., Warton Road, Stratford, be adjusted or interfered with after delivery, London, E.15, has a special appeal to manu­ can be guaranteed to within one-twelfth of one facturers who cannot justify the use and cost of degree of a specified limit with a make and a fully automatic machine, but at the same time break (differential) of one-fifth of one degree. want something much more adaptable than a The other type can be recalibrated with the normal capstan lathe. aid of a small mercury chamber which is sealed 5 5 0 E lectrical Review October 4,194 f r 12 -V on to the top end of the capillary tube. The rates of 6 A for 6-V batteries, and 4 j A t° hh'out latter is inside a protective outer glass case, batteries. The unit can ^ SU% ,e4Q/60-cycle while the contacts are made of platinum to extra charge for use on 10 0 /120 rated carry safely non-inductive loads up to 35 mA supply. A charging indicator is a.c. or 25 mA d.c. at 230 V without relays. The length of immersion can be specified by the user and interchangeable “ bullets ” are available for operation within different ranges up to 600 deg F. Various kinds of fixing head and protective stems are available. Model “ STA ” is designed for tropical conditions, sealed into a moulded bakelite head case and stem sheath with a rubber sac enclosing the mercury “ bullet.” Model “ STE (A) ” has six prefixed settings, adjustable by simply rotating the top of the head; and model “ STE (M) ” is a ten-way type with a plug-in head for remote control of the settings. Model “ STD ” is a neatly contrived torch­ like form with a moulded cylindrical casing containing an ordinary dry cell battery, which causes a miniature lamp bulb in the head to glow when contact is made by the thermometer; the sensitivity can be within one-twelfth of I deg F.

All-steel Toaster Philips heavy-duty battery charger, type E 1373 A household bread toaster weighing 3-5 lb when packed is announced by G. T. W e s t o n , and operation is foolproof. A recessed lifting Lt d ., 130, Vaughan Road, Harrow, Middlesex. handle facilitates carrying. Its size is 6-5 in. by 6-25 in. by 3-5 in. with The heavy-duty type E 1373 charger for garages and large charging stations is very simple to control and all operating instructions appear on the engraved panel on the front of the instrument. The equipment has been designed w ithout variable resistances to ensure high efficiency under all load conditions. It is suitable for charging batteries of 6 to 72 V at from 6 to 15 A. A full-wave mercury vapour rectifying valve is incorporated and a 4-position tapping switch effects voltage adjustment to suit batteries to be charged. Final charging rate is adjusted by means of an 8-position tapping switch. In another heavy-duty unit (E 1377), for charging 6, 12 or 24-V batteries at 6 or 12 A, a six-position voltage tapping switch provides the only adjustment required. This charger is suitable for supply at 100/250 V 40/60 cycles. New Television Console

Plated sheet metal toaster E. K. Cole, Ltd., Southend-on-Sea, is now marketing a new floor standing console receiver 450-W loading. It is constructed of sheet steel; Model TSC 30 designed for “ quality ” sound the body is nickel plated and the base coloured, reproduction, combined with a picture of high a three-core connector being provided. definition and good contrast. It incorporates eighteen valves and a 9-in. cathode ray tube. Battery Chargers The attractive cabinet is of walnut veneer. Philips Lamps, Ltd., Century House, Shaftes­ Miniature Toggle Switch bury Avenue, London, W.C.2, announces a range of battery chargers catering for almost One of the latest products of A rcolectric all needs. Type E 1378, for use by the private (Twickenham), Ltd., Edwin Road, Twicken­ car owner, is suitable for mounting on a ham, Middlesex, is a miniature toggle switch of garage wall. It has a loading of 40 W, the the flat m oulded p attern for flush in°set mounting. charging rate being approximately 1-3 A. For It is suitable for controlling small a.c. appli­ cver-night charging type E 162 has charging ances rated at not more than 4 A at 250 V October 4, 1946 E l e c t r i c a l R e v ie w 551 A to t U-\ ïà mttvot 40|60-qt! I'IM M I AI, SECTION .ncorpoi® Company News. Stock Exchange Activities.

of £55,000. In addition to the above profit a Reports and Dividends surplus of £70,000 has been brought into the I he English Electric Co., Ltd., which recently accounts on the realization of investments in purchased 98£ per cent of the issued share associated companies. The final dividend is capital of Marconi’s Wireless Telegraph Co., 10 per cent and a cash bonus of 2 \ per cent, Ltd., held by Cable & Wireless (Holding), Ltd., less tax, makes a total for the year of 20 per is now offering to purchase the remaining shares cent, the same as for the previous year. on the basis of 17s. 6d. for each 10s. share and Morgan Crucible Co., Ltd.—The subscription 35s. for each £1 share. The offer remains open list was to open and close on Wednesday in until D ecember 31st, 1946. connection with the offer of 301,960 “ A ” Electrical Components, Ltd., has acquired the ordinary shares of £1 at 51s. These shares will whole of the issued share capital of F. D. New- be converted into stock and with £400,000 issued combe & Co., electrical and radio distributors. “ A ” ordinary stock will be the subject of The purchase involves the issue to the share­ application for permission to deal. The new holders of F. D. Newcombe of the remaining money is required for expansion, intensified 120,000 unissued 5s. shares at a premium of research, and repayment of a bank loan. 5s. 6d. per share. Mr. F. D. Newcombe has The London Electrical and General Trust, Ltd., joined the board of Electrical Components and reports a net balance for the year ended June the two companies will continue to carry on 30th of £37,886, as compared with £32,603 for business independently. the preceding year. General reserve receives Telephone Rentals, Ltd., reports a net profit £4,541, and the final ordinary dividend is 4 per for the year ended May 31st of £136,728, as cent (against 3 per cent), making 6 per cent for compared with £139,794 for the previous year. the year (5 per cent). The balance carried ätj char^tjpiE: Tax absorbs £65,432, general reserve receives forward is £16,401 (against £16,355 brought in). £5,000, and employees' participation £17,824. Solus Teoranta (electric lamp manufacturers, As already announced, the final ordinary Eire).—From the profit of £13,729 for the year dividend is 6 per cent,’maintaining the distribu­ ended June 30th last (against £13,559 for the tion for the year at 10 per cent. The balance previous year) £6,144 (£6,160) is provided for PT* E 1373 carried forward is £38,996 (against £32,924 depreciation and £4,400 (£3,900) for taxation. brought in). A final dividend of 2 i per cent is recommended, Dubilier Condenser Co. (1925), Ltd.—The making the total for the year again 1 \ per cent, accounts for the year ended March 31st show and £1,431 (£2,231) is carried forward. a profit of £63,077 (against £47,068 for 1944-45). Madras Electric Tramways (1904), Ltd., After deducting directors’ fees and further reports a net profit for the year ended December remuneration £2,343 (£1,664), depreciation and 31st last of £26,612, as compared with £25,192 obsolescence £8,958 (£6,779) and income tax for the previous year, to which is added £21,640 £21,000 (£18,000) the net profit, already re­ brought in, making £48,252 available. The ported, is £29,822 (£19,917). A sum of £14,675 ordinary dividend for the year is maintained at (£10,000) is allocated to reserve. The ordinary 10 per cent and £33,564 is carried forward. dividend for the year is unchanged at 20 per cent and £24,076 (£22,895) is carried forward. The Madras Electric Supply Corporation, Ltd., reports a net profit for 1945 of £74,799, as com­ The Renold and Coventry Chain Co., Ltd., pared with £55,919 for 1944. The ordinary reports a net profit for the past year of £174,356, dividend for the year is 8 per cent (against 6 as compared with £116,330. It is pointed out, per cent), and the balance carried forward is however, that the accounts include £65,000 £57,715 (against £36,478 brought in). recoverable E.P.T., and also £85,000 for E.P.T. recoverable in respect of deficiencies of sub­ The Shropshire, Worcestershire & Staffordshire sidiaries in previous years, after deducting Electric Power Co. is m aintaining its interim income tax. The final ordinary dividend is 9 j dividends on the “ A ” ordinary at 4 per cent per cent, plus a bonus of 2 ± per cent, making and on the “ B ” ordinary at per cent. a total distribution for the year of 15 per cent The Wessex Electricity Co. is again paying an m W (against 12£ ‘per cent). The balance carried interim dividend of 2 per cent. forward is £30,920 (against £23,675 brought in). The South Wales Electric Power Co. is paying ml f o r i 101’ Greenwood & Batley, Ltd., have given notice an interim dividend of 2 per cent (unchanged). d »ilk a pi0 “ , of their intention to redeem on April 1st next The Urban Electric Supply Co., Ltd., is m ain­ ainsi- i*1® the whole of the debentures issued numbered taining its interim dividend at 4 per cent. f.in aitaMI 1 to 1 ,000, repayable at the price of £ 1 1 0 for each debenture. The Salisbury Electric Light & Supply Co., Ltd., has declared an interim dividend of 4 per ceni, Murex, Ltd., reports a considerable drop in the same as last year. profits for the year ended June 30th last, but this has been largely offset by a refund of The Llanelly & District Electric Supply Co., Ltd., is paying an interim dividend of 2 per cent. acts oi taxation. This refund amounts to £125,000 and with arrears of interest and dividends No interim was paid a year ago, but the final m l * * totalling £ 1 1 ,726, the profit for the year is dividend was 6 per cent. tare £201 489 as compared with £213,032 for the Newman Industries, Ltd., has announced an preceding year, which also included a tax refund interim dividend of 7£ per cent, (unchanged). 4 * 31250 Ï October 4 , 1946 5 5 2 E l e c t r i c a l R e v ie w

W. T. H enley’s Telegraph Works Co., Ltd., is engineers, etc. Subscribers: N. V- again paying an interim dividend of 5 per cent. and A. S. Husk. Regd. office: River The British Thermostat Co., Ltd., has an ­ House, E.C.2. nounced an unchanged interim dividend of F A P. D a rk e & Co., Ltd.-Registered per cent. September 3rd. Capital, £1,000. T ° 4cqu)re the business of an electrical engineer earned on The Globe Telegraph & Trust Co., Ltd., has by F A P. Darke at lc, Chandos Road, and declared an interim dividend of i per cent 119, H am pton Road R edland, Bristol. (sam e). Directors' F. A. P. Darke and H. T. Moody. Regd. office: lc, Chandos Road, Redland, New Companies Bristol. British Communications Corporation, Ltd.— Firth Brothers (Morecambe), Ltd.— Registered Registered September 20th. Capital, £10,000. September 5th. Capital £1,000. . Electrical Manufacturers and designers of and dealers, engineers and general electrical installation wholesale and retail, in radio and television contractors, etc. Permanent directors: J. H. transmitting and receiving sets and equipment, Firth, R. H. Firth and W. Huntington. Regd. telephone, telecommunication and signalling office: 74, Regent Street, Morecambe. equipment, etc. Subscribers: W. H. Boswell, and H. B. Smith. Solicitors: Titmuss, Sainer Darlington Armature Winding Co., Ltd.— & Webb, 61, Carey Street, W.C.2. Registered September 4th. Capital, £900. To acquire the business of an electrical engineer Honor Bros., Ltd.—Registered September carried on by J. Rickaby at 9, Meadowfield 20th. Capital, £10,000. To acquire the business Road, Darlington. Directors: J. Rickaby, of electrical and radio dealers, engineers and G. H. Beesley and Freda M. Stabler. Regd. contractors carried on by J. E. S. E. Honor office: 9, Arden Street, Darlington. and C. W. H. Honor at 71, The Grove, Ealing, W. Directors: J. E. S. E. Honor and C. W. H. Lauray Electrical Co., Ltd.—Registered Sep­ Honor. Regd. office: 71, The Grove, Ealing, W. tember 17th. Capital, £500. To acquire a business carried on by N. Hart and A. F. H. Frank H. Kenney, Ltd.—Registered Septem­ Goss, at 57, Tait Street, E.l and carry on ber 20th. Capital, £1,000. To acquire the business of electrical and radio engineers, etc. business carried on by F. H. Kenney at 111, Directors : N. Hart and A. F. H. Goss. Solicitors: Lancing Road, Sheffield, and to carry on the Daybell & Lynde, Stratford, E. business of dealers in motor and electrical accessories and supplies, etc. Directors: F. H. Kenney and G. E. Blythe. Secretary: H. A. Liquidations Morley. Regd. office: 26, Paradise Square, Paxford Electrical, Ltd.—Winding up volun­ Sheffield. tarily. Liquidator, Mr. A. L. Westbury, 14-18, Brooks Electrics, Ltd.— Registered September High Holborn, London, W.C.l. 17th. Capital, £2,000. Manufacturers of, and dealers in, electrical equipment, electrical con­ Aberdare Cables (Overseas), Ltd.— Meeting, tractors, rubber dealers and rubber and plastic November 15th, at 4b, Frederick’s Place, Old goods manufacturers, etc. Directors : S. Brooks, Jewry, London, E.C.2, to receive an account of Mrs. Lilian Brooks and F. G. Norman. Regd. the winding-up by the liquidator, Mr. G. H. office: Barclays Bank Chambers, 353, Lord C arbutt. Street, Southport. W. O. Prescott, Ltd. —Registered September Bankruptcies 21st. Capital, £1,000. To acquire the business A. B. Greenbaum, lately carrying on business of a repairer and manufacturer of, and dealer under the style of Green's Electrical Supplies, in, electrical and scientific instruments carried at 1 1 0 a , Highbury New Park, London, N.5, an d on by W. O. Prescott at 29-31, Cowcross at 2, lliffe’s Garages, 1, St. Patrick’s Road, Street, E.C.l. Directors: W. O. Prescott and Coventry, and residing at 217, Leamington Mrs. Ines M. A. J. Prescott. Secretary: R. H. Road, Coventry.—Trustee, Mr. T. J. M. Dutchman. Regd. office: 29-31, Cowcross Macleod, 4, Bucklersbury, London, E.C.4. Street, E.C.l. Released September 12th. A. W. Thompson (Electrical) Ltd.— Registered R. T. H. Brimfield, electrical contractor, lately September 21st. Capital, £3,000. To acquire of Wellington Cottage, Wellington Square, the business of a radio and electrical engineer London, S.W.l, lately carrying on business carried on by Albert W. Thompson at 7, Church as Richfield Electrical C om ponents, at 73-78, Street, Wath-upon-Dearne, nr. Rotherham. High Holborn, London, W.C.l.—Last day Directors: A. W. Thompson and F. G. for receiving proofs for dividend October Callaghan. Regd. office: 7, Church Street, 9th. Trustee, Mr. F. H. Langmaid, Bankruptcy Wath-upon-Dearne, nr. Rotherham. Buildings, Carey Street, L ondon, W .C .2, Official Dawson & Gent, Ltd. — Registered September Receiver. 5th. Capital, £1,500. Electrical engineers and C. W. Sands, electrical and wireless contractor, contractors, ironmongers, mill furnishers, etc. High Street, King’s Langley, Herts.—Application Directors: A. Dawson and J. W. Gent. Regd. for discharge to be heard on October 22nd at office: 86, Market Street, Farnworth, nr. the Court House, Town Hall, St. Albans. Bolton. A. Ambrose, electrical engineer, 137, Market Heat and Electrical Insulating Components, Street, Chorley, Lancs.—Application for dis­ Ltd.—Registered September 3rd. Capital, £100. charge to be heard on November 19th at the Machiners and manipulators of metals, bakelite Sessions Hall, Lancaster Road, Preston. and plastics, electrical, motor and general (Amended notice.) October 4, 1946 E l e c t r i c a l R e v ie w 55

MOTORS GENERATORS

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

SWITCHGEAR SW IT C H E S FUSES SWITCHBOARDS A IR B R EA K OIL IMMERSED

OF IMPORTANCE TO YOU FANS In order that we may give you the C EILIN G D ESK and best service under the present difficult B R A C K E T conditions we appeal to you to utilise VENTILATING standard equipment, ratings, etc., whenever possible. Your co-operation in this respect will enable us to concentrate on standard production with consequent reduction in despatch time.

USE “ STANDARD”

VERITYS Ltd. Sales Headquarters: BRETTENHAM HOUSE, LANCASTER PLACE, W.C.2 Works : ASTON, BIRMINGHAM 6 56 BUPD£TT€ Electrical R e v i e w October 4, 1946 STONHOUSE WORKS, CLAPHAM L O N D O N , S .W .4 MACai|lay DAY and NIGHT 4 FOR RELIABLE SERVICE

STATOR OF AUTO-SYNCHRONOUS MOTOR REWOUND AT OUR WORKS

WE REPAIR • REWIND • REDESIGN A.C. and D.C. MOTORS • ALTERNATORS • ROTARY CONVERTERS CONTROLLERS NOTHING TOO SMALL — NOTHING TOO LARGE W E COLLECT AND DELIVER Established over 35 years October 4, 1946 E l e c t r i c a l R e v ie w 553 STOCKS AND SHARES fixed annual contribution to the preference redemption fund. In terms of net profit, the JjjiTOCK Exchange markets have been upset decline is reduced to £8,000. At 3s. x.d. the and generally disturbed by further weakness 2s. shares give a return of £5 6s. 8d. per cent in Nfiw York and by the aspect of politics on the money. Radio Rentals are quoted at abroad. These two factors, combined with 34s. 6d. ex-rights to the new shares issued to others of minor consequence, conspired to put shareholders at 30s. The latter are 3s. 3d. a check upon the buying movement that had premium. They do not rank for the final been in progress for months past. The absence dividend for the year ended last August. Interim of support caused selling on the part of people dividends, unchanged from those of a year who, seeing good profits on their previous ago, left British Thermostat at 23s. 9d. and purchases, decided to take what they could W. T. Henley’s at 28s., while Newman Industries secure of these profits, rather than run the risk shaded off to 9s. Tube Investments are of seeing prices go down still further. easier at 5^f. The speculative sections have been the most vulnerable, although few departments round the Equipment and Manufacturing Stock Exchange escaped from the effect of the Losses during the past week in the prices of selling. Electrical equipment and manufacturing electrical equipment shares have been general shares, radio issues, and industrial equities of and of some substance. In the cable manu­ all kinds have fallen fairly heavily. Stock facturing group, Johnson & Phillips are down Exchange opinion looks for a sharp recovery 2s. 6d., to £4, British Insulated Callender’s 2s., when the selling movement has ceased, but to 45s., and Enfields Is., to 57s. 6d. General there is a sense of uneasiness that may take Electrics at 96s. 3d., and Crompton Parkinsons some time to eradicate. At the end of last at 30s. 6d., are both 2s. 6d. down. Aron week, a rallying disposition lifted prices above Electrics at 54s. 6d., Associated Electricals at their previous lowest. 66s. 6d., and Babcock & Wilcox at 60s. have shed 3s. each. Half-crown losses are shown by Repercussion from U.S.A. Chloride Electrical Storage at 96s. 3d., and by That conditions of semi-panic in the Wall British Vacuum Cleaners at 26s. 3d. The radio Street Stock Exchange should have any severe group has been noticeably weak, with declines effect in the London markets, may appear o f 3s. 9d. in Decca at 53s. 9d., of 3s. in A. C. illogical enough, although indirectly there is a Cossor at 31s., a florin in E.M.I. at 29s. 9d. and modicum of reason at the back of it. The wide­ 2s. 3d. in Pye deferred at 33s. 9d. spread strikes in America and the conditions of Miscellaneous Changes domestic nervousness engendered by politics— De La Rue shares dipped to 12^ before both in the United States and abroad—react recovering to 12-J, which left them 5s. down on upon many branches of trade that have a the week. Thus they have lost much of the counterpart on this side. With industries so advance which followed the proposal to split closely inter-related as they are at the present the shares into smaller units. Cable & Wireless time, a succession of blows to confidence across stocks have sagged further, the ordinary to the Atlantic might check the expansion of trade 1074 and the preference to 115£. Among which had been expected. traction stocks, Home Railway issues as a whole Electricity Supply are firm, but B.E.T. deferred is a further 20 points lower at 1090. The preferred, on the With the nationalization factor already well contrary, is 5 points to the good at 183. Of the discounted in the prices of electricity supply few issues to move against the week’s general companies’ shares, this market remained un­ tendency, Victoria Falls at 5i have advanced moved by Mr. Morrison’s reiteration of the half-a-crown, and Madras Electrics strengthened intention to socialize the industry during the to 38s. 3d. lifetime of the present Government, or by Sir Robert Renwick’s constructive reply. Surround­ English Electric and Marconi’s ing market conditions had equally little influence Part of the object of English Electric’s sub­ on prices: indeed, the only changes of any stantial increase of capital in July was to finance consequence have been in the upward direction. the acquisition of the Cable and Wireless Com­ Midland Electric Power, at 46s. are 2s. up and pany’s interest in Marconi’s Wireless Telegraph. Southern Areas, at 22s. 3d., are a few pence This interest covered all but 2 per cent of the better. latter company’s issued capital. English Electric now offer to purchase the balance from Company Results shareholders at 17s. 6d. per 10s. share and 35s. The Engineering & Lighting Equipment Co. per £1 share. Since the last official quotations has been able to maintain the ordinary dividend were 12s. 6d. and 25s. respectively, shareholders at 8 per cent. The now familiar reconversion are not likely to take long in making up their difficulties resulted in a reduction of the year’s minds about acceptance of the offer. English trading profit from £46,300 to £19,600. In Electric shares have sagged this week to 60s. 6d., part the fall is covered by an E.P.T. credit in at which the yield on the 10 per cent dividend is place of a debit, and by the elimination of the £3 5s. 8d. per cent. 5 5 4 E l e c t r i c a l R e v ie w October 4, 1946 MEW PATENTS Electrical Specifications Recently Published

The numbers under which the specifications will be (A ddition to 578510.) June 21st, 1943. printed and abridged are given in parentheses. (580533.) “ Spark gap electrical apparatus. Copies of any specification (Is. each) may be 86?4/45 (Divided out of 580533 ; addition obtained from the Patent Office, 25, Southampton to 578510.) June 20th, 1944 (580559 ) Buildings, London, W.C.2. F. C. Heayberd, J. Krimholtz, and F. C. Heayberd & Co. " Equipment for charging LLMANNA Svenska Elektriska Aktie- storage batteries.” 21577. December ^4th, A bolaget.—“ Rapid reclosing compressed 1943. (580546.) air-blast circuit breakers.” 12996/44. July Igranic Electric Co., Ltd.—" Electric motor 17th, 1943. (580609.) control systems.” 1345/44. January 23rd, 1943. Bendix Aviation Corporation.—“ Electrical means for reproducing motion.” 154/44. July Igranic Electric Co., Ltd., and S. R. Wright. 11th, 1942. (580647.) “ Winding of lengths of material on ring-like D. Blumlein (legal representative of A. D. articles.” 16618. August 31st, 1944. (580514.) Blumlein).—“ Electrical circuit arrangements for Landis & Gyr. Soc. Anon.—“ Current trans­ effecting integration and applications thereof.” former.” 13004/44. July 13th, 1943. (580610.) 7712. June 5th, 1942. (580527.) British Mechanical Productions, Ltd., and T. M. Lewis, E. G. Rounce and A. E. Hills.— F. C. Fuke.—“ Connector pins for electrical “ Combined gear wheel pump and electric plug and socket connections.” 20625/43. motor unit.” 13033. July 7th, 1944. (580614.) December 28th, 1944. (580492.) Maschinenfabrik Oerlikon.—“ Set screw for British Thomson-Houston Co., Ltd.—“ Wind­ electrical connections.” 26118/44. December ings for electrical apparatus and methods of 18th, 1943. (580596.) making same.” 20499/44. October 23rd, 1943. Philips Lamps, Ltd.—“ Electrical measuring (580675.) devices.” 13346/44. May 11th, 1943. (580626.) British Thomson-Houston Co., Ltd. (General A. Reyrolle & Co., Ltd., and D. F. Amer.— Electric Co.).—“ Methods of consolidation of “ A.c. electric circuit-breakers of the gas-blast powdered metals.” 16909. October 14th, 1943. type.” 19180. October 6th, 1944. (580672.) (580490.) " Sangamo Weston, Ltd.—“ Radio compasses.” British Thomson-Houston Co., Ltd., and 29096/39. A ugust 11th, 1939. (580522.) H. F. Jefferson.—“ Control of electrically driven “ Measurement of very small direct currents.” soot blowers.” 11887. June 22nd, 1944. 11593/44. August 20th, 1943. (580656.) (580605.) Soc. des Aciers Fins de l’Est.—“ Apparatus British Thomson-Houston Co., Ltd., and for butt-welding.” 7921/44. June 26th, 1939. T. H. Mackenzie.—“ Direction finding systems (580523.) utilizing electromagnetic waves.” 4508. April Soc. Française R adio-E lectrique.— “ Systems 3rd, 1942. (580482.) for the transmission and reception of radio British Thomson-Houston Co., Ltd., and electric waves with great precision of standardi D. J. Mynall.—“ Electrical remote indicating zation.” Cognate applications 12047/42 and systems.” 4510. April 3rd, 1942. (580483.) 12048/42. January 26th, 1940. (580528.) British Thomson-Houston Co., Ltd., W. A. P. A. Sporing and T elegraph Condenser Co., Bocock and T. F. Robinson.—“ Construction of Ltd.—“ Method of and means for soldering.” high voltage transformer windings.” 19608. 20707. October 25th, 1944. (580557.) October 11th, 1944. (580673.) Standard Telephones & Cables, Ltd.— British Thomson-Houston Co., Ltd., H. de B. “Induction heating apparatus.” 4481/44. March Knight and D. F. Welch.—“ Hermetically 12th, 1943. (580495.) “ Deposition of metallic sealed spark gaps.” 10938. June 7th, 1944. selenium on a base element.” 1228/44. Decem­ (580655.) ber 1st, 1942. (580648.) Burndept, Ltd., and R. P. Richardson.— S tandard T elephones & Cables, Ltd., and “ Construction of inert electric batteries.” H. P. Williams.—“ Radio systems for guiding Cognate applications 25016/44 and 3827/45. aircraft.” 9035. M ay 11th, 1944. (580502.) December 13th, 1944. (580676.) S tandard Telephones & Cables, Ltd., and Cooke & Ferguson, Ltd., and R. N. Buttrey.— E. O. Willoughby.—“ Keying devices for high- “ Electric circuit breakers.” 13561. July 15th, frequency circuits.” 10183. August 11th, 1941. 1944. (580634.) (580481.) “ Keying arrangements for radio Dubilier Condenser Co., (1925), Ltd., and frequencies.” 14724. (Addition to 580481.) A. T. Pitt.—“ Protective waterproof coverings October 20th, 1942. (580484.) of electrical condensers and resistances and Standard Telephones & Cables, Ltd., and other objects of irregular prismatic shape.” E. O. Willoughby.—“ Radio navigational sys­ 16802. October 13th, 1943. (580489.) tem s.” ’ 6299. A pril 4th, 1944. (580567.) Ferranti, Ltd., and G. I. Thomas.—“ Ther­ “ Aerial systems.” 7482. April 21st, 1944. mionic switching systems.” 12149. June 26th, (580569.) “ Keying devices for high-frequency 1944. (580575.) circuits.” 7628. (A ddition to 580481.) April E. Fries.—“ Transformer with adjustable 24th, 1944. (580570.) reactance for electric arc welding.” 13936. J. Starkiewicz, and C. S. Wright.—“ Prepara­ August 26th, 1943. (580600.) tion of m aterials for the production of photo- M. E. Haine, J. M. Meek, J. D. Craggs and conductive cells.” 3572. February 25th, 1944. Metropolitan-Vickers Electrical Co., Ltd.— (580551.) “ Spark gap electrical apparatus.” 10010. J. Starkiewicz, R. L. Stow and C. S. Wright.- 4, 1946 October E l e c t r i c a l R e v ie w 5 5 5 rr,nrrW fftl0n .. °,C thallium sulphide photo- Sir H. E. Yarrow.—“ Steam temperature (580550 ) 3571' February 2 5th, 1944. regulator for use in connection with water lube boilers.” 12492. (Addition to 577297.) ,, Switchgear & Cowans, Ltd., and A. Upton.— June 30th, 1944. (580657.) Arc control devices for oil immersed electric A mended Specifications. 1944 (580670 )'" '8273' Scptcmbcr 25th- 560564. Standard Telephones tk Cables, Telephone Manufacturing Co., Ltd., and Ltd.—“ Means for forming deposited layers.” T. H. Whale.—“ Electrical fused plug and socket 564980. Standard Telephones & Cables, connectors.” 2968. February 17th, 1944. Ltd.—“ Rectification ratio in selenium ele­ (580494.) m ents.” Westinghouse Electric International Co.— 566384. Dorman & Smith, Ltd., and another. “ Winding of electrical apparatus, for example, —“ Electrical connector plugs.” electric transformers.” 19236/44. October 7th, 571304, M. Tama.—“ Submerged resistor 1943. (580585.) induction furnaces.” CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work Northumberland. — Education Committee. Contracts Open Accepted. Electric lighting installations, Amble Where “ Contracts Open ” are advertised in our Council School (£144).—J. & E. Morton. “ Official Notices ” section the date of the issue Norwich. — Works Committee. Accepted. is given in parentheses. Welding apparatus for Westwick depot (£104).— Bolton.—October 7th. Town Council. Motor Murex Welding Processes. tower wagon. (September 27th.) Oldham.—Electricity Committee. Accepted. London.—Metropolitan Water Board. Diesel Transformers. — Ferranti. Switchgear. — driven alternator plant. (See this issue.) Ferguson, Pailin. Cables, l.v. and h.v.— Manchester.— O ctober 8th. Electricity Depart­ Lancashire Cables. ment. Substations and switchboards. (Septem­ Poplar.—Contracts Committee. Accepted. ber 20th.) Seven lifts at Abbott Road flats (£7,016).— Pudsey.—October 15th. Electricity Depart­ Express Lift Co. Amended tender for 2,000 ment. Paper-insulated cables. (September 27th.) 25-A meters (£13,550).—Metropolitan-Vickers Electrical Co. 100 concrete public lighting Southport.—October 14th. Electricity De­ columns (£818).—Stanton Ironworks. 300 partment. Eighty cast iron short street lighting lanterns (£284).—G.E.C. standards. (September 27th.) October 26th. Corporation. Electric light­ St. Pancras.—Contracts Committee. Accepted. ing installation, Floral Hall. (September 27th.) 500 single-phase meters (£1,188).—Ferranti. 500 single-phase meters (£1,188) and 500 meter Stalybridge.—October 14th. Town Council. elements and components (£1,950).—Cham­ Electric lighting equipment in Victoria Market berlain & Hookham. Mercury switches (£225). Hall. Borough surveyor. Town Hall (deposit: —Mercury Switch Manufacturing Co. Wiring 10s. 6d., returnable). accessories (£572).—J. & N. Wade (London). 17,000 yards of v.i.r. cable (£763).—Enfield Orders Placed Cables. Ashton-under-Lyne. — Electricity Committee. Stoke Newington. — Highways Committee. Accepted. E.h.v. 3-panel metalclad switchgear. Accepted. 230 lighting columns (£8 13s. 3d. —Ferguson, Pailin. One 750-kVA and one each).—Concrete Utilities. 500-kVA transformers.—Ferranti. Tynemouth.—Housing Committee. Accepted. Brighton.—Electricity Committee. Accepted. Wiring and fittings for Council houses: 36 Fire protection equipment, Withdean substation houses at West Chirton (£985) and 30 in Lynn (£725).— Mather & Platt. Road (£820).—Electrical Equipment, Ltd., Lewisham.—General Purposes Committee. North Shields. 16 houses in East End (£442).— Recommended. Amplifying equipment at Town George Swan, Ltd., North Shields. Hall (£219).—E.M.I. Service. Manchester. — Electricity Committee. Ac­ Contracts in Prospect cepted. Domestic appliance accessories.—Dia­ Particulars o f new works and building schemes for mond “ H ” Switches; M.K. Electric; Simplex the use of electrical installation contractors and Electric. traders. Publication in this section is no guarantee Generation Sub-Committee. Accepted. Stuart that electrical work is definitely included. A lleged Street power station: 420-V switchgear.— inaccuracies should be reported to the Editors. English Electric. 33-kV cables.—Standard Abergele.—Houses (52), Rhuddlan Road Telephones; Johnson & Phillips. Distribution Sub-Committee. Accepted. (£59,000); Roger Hughes & Glyn Roberts, 36-H.P. motor and starter. — B.T.H. Co. builders, Coast Road, Rhyl. 10,000-kVA transformers, Sale and Moss-side Barking.—Five blocks of- flats, Mayesbrook substations.—Ferranti. Park estate; C. C. Shaw, borough architect, Town Hall. Morecambe. — Electricity Committee. Ac- rented Three transformers (1615 each). — Bexhill.— Fifty “ Orlit ” houses (£65,700); Electrical Construction Co. William Willett, Ltd. 4 , 1946 5 5 6 E l e c t r i c a l R e v ie w October

Billericay.—Houses (16), Kennel Lane site; Spennymoor.—Factory, T. Summerson & H. B. Mayhew, surveyor, Council Offices. Sons, Darlington; Clayton & Deas, architects, Bingley. — Houses (48), Gilstead estate High Row Chambers, Darlington. (£50,901); F. W. Heaton (Builders), Ltd., Tottenham. — Flats (84), Allington estate Airedale Mount, Sandbeds. (£98,870) ; Moore & Wood, Ltd., 262, Langham Bishop Auckland.—Houses (274), St. Helen's Road, N.15. estate ; M. C. Robson, architect, Station Wakefield. Houses (70), Flanshaw estate C ham bers. extension; city engineer, Town Hall. Bloxwich.— Factory, Willenhall Lane; Blox­ Wigton.—Houses (35), at West Silloth; Reay, wich Domestic Boiler & Cylinder Co. builder, Penrith. Bromsgrove.—Houses (100), Charford Road; Wokingham.—Houses and bungalows (24), J. Garrington, Ltd., Newton Works. Commons Road, Emmbrook; E. G. V. Hives, Caernarvon.—Houses (100), Maes Incla site; Council’s architect, 3, Cork Street, Reading. Williams & Williams, builders, Llys Meirion. Wood Green.—Flats (18), Durnsford Road Chester.—Houses (148), Blacon estate; city (£22,986); R. F. Peachey & Sons, Ltd., Horn- engineer. field Church Lane, N.17. Chorleywood.—Houses (30), Capell Hamlet; A. W. Pryor, Ltd., builders, 30, High Street, Rickmansworth. TRADE MARKS Cowes (I. o. W .).—Secondary school, North- PPLICATION has been made for the regis­ wood Park (£49,340); Frank Batty & Smith, A tration of the following trade marks. Ob­ Ltd., Ryde. jections may be entered within one month from Derwent.—Houses (32), Fulford (£41,817); Septem ber 2 5 th :— Sorrell (York), Ltd., builders, Emerald Street, G lissite. No. 639906, Class 7. Bearings and Groves, York. antifriction pads, all for machines; dynamo Durham.—Dining halls.at a further 32 schools; brushes and driving pulleys. Also No. 639907, county architect, 34, Old Elvet. Class 9 . Electric collectors, electrical contact Flaxton.—Houses (32) for R.D.C.; surveyor, and conducting devices and electrical contacts. 62a, Bootham, York. —Aktiebolaget Pulverkemi, Stockholm. Ad­ dress for service, c/o Frank Watson, Aldwych Hindley (Wigan).—Factory, Leigh Road; House, Aldwych, W.C.2. Turner Bros. Asbestos Co., Ltd., Spotland, R o -m o . N o. 6 4 1 3 4 9 , C lass 7. Motor-driven R ochdale. hydraulic pumps.—Rotoplunge Pump Co., Ltd., Jarrow-on-Tyne.—Works extensions; Jarrow 58, Victoria Street, S.W.l. Tube Works, Ltd., Northbourne Road. Londol. No. B 6 3 8 9 2 6 , Class 9 . Electrical Kidderminster.—Flats (63), Birchen Coppice instruments and apparatus and parts thereof, all (£37,000); borough engineer. being goods included in Class 9, but not Kinross.—Houses (26) for Town Council ; including electrical relays.—Lonsdale & Co. Town Clerk- (Electric), Ltd., Wharf Street Mill, Heaton Norris, Stockport, Cheshire. Liverpool.—County secondary school, School B e s c o l . N o. 6 4 0 9 2 4 , Class 9. Electric Lane, Woolton ; L. H. Keay, city architect, kitchen utensils included in Class 9 ; flexible Blackburn Chambers, Dale Street. conductors and resistances, switches, bells, Manchester.—Dining room and rest room at buzzers, coils, batteries, transformers, fuses, works; Etchells, Congdon & Muir, Ltd., 25, soldering irons, smoothing irons, kettles, Mill Street, Ancoats. vacuum cleaners, terminals and contacts, all Additions to works; Muir Machine Tools, being electrical goods.—Bescol (Electric), Ltd., Ltd., Irwell Street, Strangeways. 118, Parkfield Road, Saltley, Birmingham, 8. Factory, Maine Road, Moss Side; Mottram Artilon. No. 641820, Class 11. Electric & Co., Ltd., 30a, Market Street, Stockport. torches and electric lamps, and parts thereof not Central kitchen and dining hall, Openshaw; included in other classes.—Artima (London), L. C. Howitt, city architect, Town Hall. Ltd., 121, Charlotte Street, W .l. Houses (323), Wythenshawe (£395,000); city architect. Menai Bridge.—Houses (90) on two sites for Export Inquiries U.D.C.; R. T. Jones, architect, Midland Bank Chambers, Bangor, N. Wales. 1 /E have received the undermentioned w inquiries from firms and individuals ,, Middlesbrough.—Houses (41), Stratford Cres­ cent; J. Gilmore, builder, 179, West Lane. overseas who wish to secure agencies for British Motherwell.—Greyhound racing track; P. electrical equipment and appliances or to import Reid, 638, Merry Street. them into their territories. We shall be glad to pass on to them replies received from readers Nottingham.—Four blocks, Mental Defective Colony, Aston Hall, Aston-on-Trent; R. M. which should be addressed to the Editors, Finch, city engineer, Guildhall. quoting the number given in parentheses. We St. Pancras.—Flats (72), Hampshire Street; cannot vouch for the standing of inquirers and borough engineer. manufacturers replying to them will no doubt Sedgefield. — Holises (194), at Ferryhill; require the usual references:— R.D.C. surveyor. France.—An ex-Service man with connections Sidcup.—Houses (50), Sydney Road (£72,958); in France wishes to buy wiring materials, E. O’Sullivan (Kenley), Ltd., Arterial Road, switches, motors and starters, generators and St. Mary Cray, Kent. lamps. (X.163.) October A, 1946 E l e c t r ic a l R e v ie w 5 7

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1 »tb niaili.. IWhi Beams. s; k Nai* licalcs «1 COB' kiok »s,.^

FAMOUS HYDRO-ELECTRIC STATIONS 9, Be iffito The Bouquet Canyon Dam is situated immediately above the San Francisquito Canyon Power Plants which have a generating capacity of i )f ,ooo h.p. The capacity of the reservoir above the outlet is )6,joo acrefeet. The purposes of the reservoir are emergency storage for domestic use and power generation along the route o f the Los Angeles Aqueduct. a s S . ¡»iicte ■ ion® * irons, is id CM»

rjaalW 1. iries gd®*1 aidi^ ajcs*11® ¡eirfW indWj < MEASUREMENT LIMITED ^¡js- Electricity and Water Meters of Quality ■ TERMINAL HOUSE, LOWER BELGRAVE ST., LONDON, S.W.1 nnus * — — — 1 ■ «nertto»' CM27 5 8 E l e c t r ic a l R e v ie w October 4, 1946

THE WONDERFUL LAMP Pfizxtzcr

A new era of brightness in the home,

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Advt. of The General Electric Co. Ltd., Magnet Houte. Ktngsway, London, IV C z O ctober 4, 1946 E l e c t r i c a l R e v i e w 59 •CLASSIFIED ADVERTISEMENTS- ADVERTISEMENTS for insertion in the following REPLIES TO advertisements published under a rnaay s issue are accepted up to First Post on Box Number if not to be delivered to any particular M onday, at Dorset House, Stamford Street, London, firm or individual should be accompanied by instruc­ S .E .l. tions to this effect, addressed to the Manager of the THE CHARGE for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in is 2/- per line (approx. 7 words) per insertion ; ONLY such cases cannot be returned to them. The name OFFICIAL AND GOVERNMENT ANNOUNCE­ MENTS CAN NOW BE DISPLAYED 30/- p e r' of an advertiser using a Box Number will not be inch. Where the advertisement includes a Box disclosed. All replies to Box Numbers should be Number this counts as six words and there is an addressed to the Box Number in the advertisement, additional charge of 6d. for postage of replies. c/o ELECTRICAL REVIEW , Dorset House, Stam­ SITUATIONS WANTED. — Three insertions ford Street, London, S.E.l. Cheques and Postal under this heading can be obtained for the price of Orders should be made payable to ELECTRICAL two if ordered and prepaid with the first insertion. REVIEW LTD. and crossed. Original testimonials should not be sent with applications for employment.

OFFICIAL NOTICES, TENDERS , ETC. LONG EATON U.D.C. ELECTRICITY UNDERTAKING

METROPOLITAN WATER BOARD Appointment of Electrical Engineer and Manager

Tenders for Diesel Alternator Plant rp H E Urban District Council of Long Eaton invite appli- cations for the position of Electrical Engineer and rpH E Metropolitan Water Board require Diesel-driven Manager of their Undertaking. Applicants must be Cor­ Alternator Plant, sizes varying from 350 kW to 100 porate Members of the Institution of Electrical Engineers, kW, 400/440 volts, 3-phase, 50 cycles. Reliability is the and prepared to satisfy the Council as to their organising first consideration and slow speeds are preferred. Parti­ ability and business capacity. culars of plant available should be forwarded from time The salary will be in accordance with the Scale of Salaries to time enclosed in sealed envelopes addressed to the fixed by the National Joint Committee of Local Authorities undersigned at the offices of the Board (Room 122), and and Chief Electrical Engineers for the Electricity Supply endorsed ** Tenders for Diesel Alternator Plant.” Industry, dated July, 1941, based on the output from C. W. S T O K E R . time to time of the Undertaking. The appointment will New River Head, Clerk of the Board. be subject to the provisions of the Local Government Rosebery Av.. London, E.C.l.______2768 Superannuation Act, 1937, and the person appointed will be required to pass a medical examination. BOROUGH OF REDCAR ELECTRICITY QEPT. Copies of the terms and conditions of appointment and form of application may be obtained from me. Applica­ rpEN D ERS are invited for the supply, laying and joint- tions on the prescribed form, duly completed, accompanied J- ing of Extra High Tension and associated Pilot Cables. by three recent testimonials, must be delivered to the Forms of tender and general conditions may be obtained undersigned in a sealed envelope endorsed “ Electrical from the Borough Electrical Engineer, Electricity Offices, Engineer and Manager ” not later than October 19th, 1946. 112 , High Street, Redcar. Canvassing members of the Council, either directly or Tenders must be enclosed in a plain sealed envelope, indirectly, will be a disqualification. endorsed “ Tender for Cables,” and should be delivered to WM. E . S T A N L E Y . me not later than November 2nd, 1946. The Council does Town Hall, Long Eaton. Clerk to the Council. not bind itself to accept the lowest or any tender. 19th September, 1946. 2669 H. CALDWELL. Municipal Buildings, Redcar. Town Clerk. DERBYSHIRE EDUCATION COMMITTEE 25th September, 1946.______2776 Chesterfield Technical College SITUATIONS VACANT Principal: N. Harwood, B.Sc.(Hons.), A.M.I.Mech.E. COUNTY BOROUGH OF DARLINGTON ELECTRICITY DEPARTMENT A PPLICATIONS are invited for the position of Lecturer in Electrical Engineering. Candidates for the post Appointment of Shift Charge Engineer should hold a University Degree in Engineering and/or Corporate Membership of the Institution of Electrical PPLICATIONS are invited for the above appointment Engineers, and should have had experience in the electrical A from candidates with a sound technical education to engineering industry. Salary in accordance with the a standard equal to Corporate Membership of the I.E.E. Burnham Scale for Technical Institutions. Experience in a modern generating station is essential Application forms and further particulars may be obtained and workshop training will be an advantage. The salary from the undersigned on receipt of a stamped addressed and conditions will be in accordance with N .J.B. Agree­ foolscap envelope, and to whom completed forms should ment. Class H. Grade 8. commencing salary being £401 be returned as soon as possible, and not later than Thurs­ per annum. The successful candidate will be required to day, 24th October, 1946. pass a medical examination. NORMAN F. C. THORN. Applications should be submitted not later than 15th Technical College, Clerk to the Governors. October. 1946. on forms which can be obtained from the Infirm ary R d .. Chesterfield. ______2757 Borough Electrical Engineer, Haughton Road. Dariingtom BI NGLEY U.D.C. ELECTRICITY DEPARTMENT

ROBERT GORDON'S TECHNICAL COLLEGE, Appointment of Meter Tester.and Repairer (Class I) ABERDEEN A PPLICATIONS are invited for the above permanent Department of Electrical Engineering position. Conditions of employment will be in accord­ Head of Dept. : Eric Wilkinson. B.Eng.. Ph.D., A.M .I.E.E. ance with No. 2 Area, District Joint Industrial Council. Section B, the present rate of pay being 2s. 3|d. per hour. PPLICATIONS are invited for the post of Junior 47-hour week. A Lecturer in Electrical Engineering. Applicants Applicants must be capable of and fully experienced in nrpfprablv should be Honours Graduates and should have repairing and testing all types of A.C. meters. The person «n^iali&d in some branch of heavy electrical engineering. appointed will, subject to satisfactory medical examination, Prnrtiral experience would be an advantage. Salary scale be admitted to the Council’s Superannuation Scheme. fino x £15 to £595 per annum. Applications in writing, sitting full details of training A^rUimtinns accompanied by copies of three testimonials and subsequent experience, and accompanied by testi­ name's of three referees, should be sent to the monials, to be addressed to the undersigned on or before anTii£n?d from whom further particulars may be Monday, the 14th October, 1946. obtained not later than 25th October. 1946. OSWALD G. COOK. A.M.I.E.E. obtained, A c> W E ST . Director. Electricity Offices, Chief Engineer and Manager. 2775 Bingley. 2785 October 4, 1946 60 E l e c t r i c a l R e v i e w

METROPOLITAN BOROUGH OF ISLINGTON PAISLEY CORPORATION ELECTRICITY DEPT. ELECTRICITY DEPARTMENT Appointment of Two Mains Assistants PPLICATIONS are invited from persons not less than A 21 years of age for the position of Male or Female PPLICATIONS are invited for the following positions : Sales Assistant. A (1) FIRST MAINS ASSISTANT, at a salary in accord­ The salary for the position will be at the rate of £255 ance with Grade 7, Class F. of the N .J.B. Schedule (at per annum, plus temporary cost-of-living bonus, at present present £479 rising to £489 per annum). amounting to 23s. a week for men and 18s. 6d. a week (2) MAINS ASSISTANT, at a salary in accordance with for women, but the salary will be reviewed on the applica­ Grade 8a, Class F. of the N.J.B. Schedule (at present tion of the scale of salaries laid down in the National £413 rising to £429 per annum). Joint Council Scheme of Conditions of Service. Applicants, who should preferably be Corporate Mem; Preference will be given to candidates having had experi­ bers of the I.E.E.. must have had a sound technical and ence in the showrooms of an Electricity Supply Under­ practical training in the operation and construction of taking. The appointment will be subject to the National E.H.T. and L.T. distribution systems. Knowledge and Joint Council Scheme of Conditions of Service and to the experience in the maintenance, routine testing and erection provisions of the Local Government Superannuation Act, of substation equipment, fault localisation, etc., is essential. 1937. and the successful candidate will be required to pass The appointment will be subject to the provisions of the a medical examination. Local Government Superannuation Act, 1937, and the Applications, stating age, whether married or single, successful candidate will be required to pass a medical qualifications and experience, accompanied by copies of examination. . not more than three recent testimonials, must be sent to Applications, stating age, w’hether married or single, the Engineer and General Manager, 341/343, Holloway training and present position, together with copies of recent Road. N.7, so as to reach him not later than the 19th testimonials, should be sent to the undersigned not later October. 1946. Candidates are required to disclose in than 12th October, 1946. writing whether, to their knowledge, they are related to DANIEL ROSS. A.M.I.E.E., F.I.E.S., any member or holder of any senior office under the 27, Blackhall St.. Electrical Engineer and Manager. Council. Paisley. _____ 2747 The Council are unable to make any arrangements whatsoever for the provision of housing accommodation BOROUGH OF WIMBLEDON ELECTRICITY DEPT. for the successful candidate. Canvassing, either directly or indirectly, will be a disqualification. PPLICATIONS are invited for the position of Mains W. E R IC AD AM S. A Assistant in the above Undertaking. Candidates Town Hall. Town Clerk. must have technical qualifications not less than Higher Upper Street, N.I.______2770 National Certificate in Electrical Engineering and possess experience in the installation and maintenance of L.T., BOROUGH OF SUTTON COLDFIELD H.T. and E.H.T. cables, transformers and switchgear. Salary in accordance with Grade 8b, Class H. N.J.B. Appointment of Electrical Engineer and Manager Schedule No. 10 (Greater London) District (at present £450 per annum). The appointment will be subject to PPLICATIONS are invited for the above appointment the provisions of the Local Government Superannuation A from persons suitably qualified. The full salary at Act, 1937, and the person appointed will be required to the rate of £1,035 per annum (which is in accordance with pass a medical examination. the Agreement dated 9th July, 1941, between the National Applications, giving age, particulars of training, quali­ Joint Council for Local Authorities and Chief Electrical fications and experience, accompanied by not more than Engineers and is based on the present unit assessment) three recent testimonials, should be addressed to the Chief will be paid from the date of commencing duties. The Engineer and Manager, Borough of Wimbledon Electricity cost of living bonus, at present £59 16s., will also be paid, Department. Electricity House, Durnsford Road, Wimble­ together with a suitable car allowance. don, S.W.19. not later than Friday, 11th October, 1946. Recent experience in the management of Electricity EDWIN M. NEAVE, Town Clerk. Supply Undertakings is essential, and applicants must ______2759 have a sound knowledge of design and operation of 33-kV, 11-kV and 6.6-kV and L.T. underground and overhead METROPOLITAN BOROUGH OF FULHAM distribution, networks and substations. ELECTRICITY DEPARTMENT The appointment will be terminable by three months’ notice in writing on either side, and will be subject to the HPHE Council invites applications for the following Local Government Superannuation Act, 1937, the Scheme positions in their Base Load Generating Station, of Conditions of Service made by the National Joint Townmead Road, Fulham, S.W .6. Council, and to a satisfactory medical examination. ASSISTANT OPERATING ENGINEER, in Class L. Forms of application may be obtained from the under­ Grade 7, of the National Joint Board Schedule, at a signed, to whom applications shall be sent so as to be commencing salary of £676 4s. per annum. Applicants received not later than Saturday, the 12th day of October. must be under 40 years of age. 1946. in envelopes marked “ Electrical Engineer.” Can­ TEMPORARY ASSISTANT TECHNICAL ENGINEER, vassing, directly or indirectly, will disqualify. at a salary of from £8 to £10 per week, according to ability. R . W A LSH , Candidates must be under 45 years of age. Council House, Sutton Coldfield. Town Clerk. Forms of application and general conditions of appoint­ September, 1946. 2645 ment may be obtained by sending a stamped addressed foolscap envelope to me. Completed applications must be METROPOLITAN BOROUGH OF SOUTHWARK returned to me to arrive not later than 12 noon on Monday, ELECTRICITY DEPARTMENT 21st October, 1946. CYRIL F. THATCHER. Shift Charge Engineer Town Hall, Town Clerk. Fulham, S.W.6.______2752 PPLICATIONS are invited for the appointment of a A Shift Charge Engineer at Penrose Street Generating COUNTY COUNCIL OF DURHAM EDUCATION Station. Candidates muit have had good practical and DEPARTMENT technical training in mechanical and electrical engineering and experience in the running and maintenance of a power Stockton Technical School and Evening Institute station. The salary and conditions will be in accordance with PPLICATIONS are invited for the post of Principal the National Joint Board Schedule (Class E, Grade 8). A of the above Technical School and Evening Institute. the present salary being £413, plus 5% (London Area) Candidates must be graduates of a British University and per annum. should have had experience in the work of a similar Applications, in candidates own handwriting, stating institution. age, training and experience in date order, together with Salary £650, rising by annual increments of £20 to a copies of three recent testimonials or names of three maximum of £900 per annum. For further particulars persons to whom reference can be made, are to be endorsed and forms of application (which must be completed and ” Shift Charge Engineer ” and must reach the undersigned returned as soon as possible) apply, enclosing stamped, not later than first post on Thursday. 10th October, 1946. addressed foolscap envelope, to the Director of Education, D. Shire T. GRIFFITHS. Hall. Durham. Southwark Town Hall, Town Clerk. THOS. B. TILLEY. Walworth Road. S.E.17. Shire Hall, Durham. Director of Education. 24th September, 1946. 2737 18th September, 1946. 2694 October 4, 1946 E l e c t r i c a l R e v i e w 61

CITY OF PORTSMOUTH ELECTRICITY SERVICE CITY OF MANCHESTER ELECTRICITY DEPT.

A - are inv'ted for the following positions : PPLICATIONS are invited for the position of Resident in L i î î w MBUSTI°N SHIFT ENGINEER at a salary A Engineer at Barton Power Station, at a salary in Kśtiott: I t £!oTth Grade 8' aass J ’ of the N J-B. Schedule. accordance with Class K , Grade 3, of the N .J.B. Schedule 1 i.per ?nnum- Applicants must have had a (£839 p.a. rising by two biennial increments to £877 p.a.), sound tecnnical training and be experienced in all branches together with the free tenancy of a house from December. °p S S B?FS« associated with the design and operation 1947. lance viü ot v« a* r and be in possession of technical Applicants must have had a good engineering training, atptfcss qualifications admitting to corporate membership of the followed by experience in the operation and maintenance Institutioni of Mechanical or Electrical Engineers. of plant in large Selected Stations. They should be under (b) TWO DISTRICT MAINS ENGINEERS at a salary 45 years of age, possess administrative ability, and be rate h.- ■tmicslig m accordance with Grade 8. Class J. of the N .J.B . Schedule, Corporate Members of either the Institution of Electrical at present £521 per annum. Applicants must have had a Engineers or the Institution of Mechanical Engineers. tnictica ;] sound technical training and practical experience in the The appointment will be subject to the City Council wledge IV installation, operation and maintenance of E.H.T. and Superannuation Scheme, and the successful candidate will radewa L.T. underground and overhead distribution systems, and be required to pass a medical examination. preferably be in possession of qualifications admitting to Applications, on a form to be obtained from Mr. R. A. S. S10DS (Í corporate membership of the Institution of Electrical Thwaites. Chief Engineer and Manager, together with 1Î, Ud t: Engineers. copies of recent testimonials, should be endorsed “ Resident S & Eńta (c) THREE JUNIOR ENGINEERS, one in the Distri­ Engineer,” and addressed to the Chairman of the Elec­ bution Department and two in the Power Station, at a tricity Committee. Town Hall. Manchester. 2. not later ¡d « S¿ salary in accordance with Grade 10 of the N.J.B'. Schedule, than 10 a.m. on Monday. 21st October. 1946. Canvassing, Pies ol ras at present £355 per annum. Applicants should have com­ directly or indirectly, will disqualify. pleted a course of training in a technical college, and fód dotse PHILIP B. DINGLE. preferably have had works experience. Town Hall, Manchester. 2. Town Clerk FIES, Forms of application may be obtained from the Engineer 25th September, 1946.______2774 lûdlliiiE and Manager. The latest date for the return of applica­ tions is 17th October. 1947. Canvassing, either directly CITY AND COUNTY OF Kl NGSTON-UPON-H ULL or indirectly, will be a disqualification. ELECTRICITY DEPARTMENT CITY DOT R. H. COATES. 111. High Street, Engineer and Manager. Technical Assistant átion oí üc Portsmouth. 5. (Ä 25th September. 1946.______2765 A PPLICATIONS are invited for the above position from 8 tolf: AER RIANTA (IRISH AIRWAYS) persons possessing a sound knowledge and experience mgadice TRANSATLANTIC DIVISION of electrical po#er engineering, who should have served Mee ci U a works apprenticeship and possess an honours degree in ind inlda: engineering. Experience in consulting work would be an Sas H.SJ1 ER Rianta (Irish Airways), Transatlantic Division, advantage. riet (Uęs A invite applications for the following post : — Salary in accordance with N .J.B. Schedule, at present U be afer. Telecommunications Engineer. Class J (but subject to reclassification at the end of the Applicants should possess (a) a University degree (or year to Class K), with commencing salary based on i be tend; its equivalent) in Engineering or Science, the course for Grade 3. Class J, £785 per annum, and that of Class K. which included electrical subjects or physics; (b) wide and £839 per annum. The appointment is subject to a medical i tniÉftî* responsible experience of aeronautical radio and of modern examination. y Dût egt-Q radio technique generally, including at least 5 years’ The person appointed must reside within the city boun­ sed to Ht Û2 experience in a responsible capacity in the design, con­ dary (waived during present conditions) and after three bkáüfl Eäsr struction, installation, testing and maintenance of aero­ months’ satisfactory probation will be required to con­ nautical radio equipment for communications and as aids tribute to the Local Government and Other Officers’ Super­ rdEcaifó to air navigation; (c) considerable experience in organisa­ iQetotalid annuation Scheme. tion, control of staff and administration generally. Applications should give names of references who may be liento Applications must be in writing and must state age, consulted, and should be submitted to the General Manager. experience, educational and other qualifications, range of Electricity Offices, Ferensway, Kingston-upon-Hull, by the salary expected, the date on which candidates are free to 18th October, 1946. 2832 IF FULHAI take up duty if selected, and the names of two persons MENT who can be quoted as references. The applications must BOROUGH OF REIGATE ELECTRICITY DEPT. reach the Secretary. Aer Rianta Tta. (Transatlantic Divn.), lor & tí® 43 Upper O’Connell Street. Dublin, not later than Monday. A PPLICATIONS are invited for the position of Mains ¡331É? ŚC 21st October, 1946.______2767 Assistant Engineer. Candidates must have the Higher National Certificate in Electrical Engineering (or equiva­ CROWN AGENTS FOR THE COLONIES lent qualification) and possess experience in the installation ud Sdłtdzrirł' of L.T., H.T. and E.H.T. cables, transformers and switch- cna. tö* Colonial Government Appointments gear. Salary in accordance with Class’ E. Grade 8a. N.J.B. lOlEN^ PPLICATIONS from qualified candidates are invited Schedule. No. 9 Area, at present £387 per annum, plus A for the following post: Meter Superintendent required £50 per annum (car allowance). The appointment will be by the Nigerian Government Electricity Undertakings for subject to the provisions of the Local Government Super­ one tour of 18-24 months, with prospect of permanency. annuation Act. 1937, and the person appointed will be Salary £630 rising to £720. On salary of £630 local allow­ required to pass a medical examination. ance of £24 and, for married men, separation allowance of Applications, stating age, training, qualifications and between £60 and £180 a year according to number of experience, accompanied by three copies of recent testi­ dependants. Free passages and quarters. Candidates, not monials. must reach me by the first post Saturday, 19th over 40 years of age. must be fully conversant with the October, 1946, and must be endorsed “ Mains Assistant fixing, testing and maintenance of all types of A.C. and Engineer.” Canvassing, directly or indirectly, will dis­ D.C. (single and polyphase) meters, and with protective qualify. systems and the testing and maintenance of operative and HEBER DAVIES. Town Clerk. protective gear. They should also have had good general Town Hall. Reigate. 2824 administrative experience. Apply at once by letter, stating age. whether married or single, and full particulars of WHITWORTH U.D.C. ELECTRICITY DEPARTMENT , il) 11# qualifications and experience, to the Crown Agents for the Colonies. 4. Millbank, London. S.W .l. quoting M /N /16840. X^LECTRICAL Engineer required to take charge of and on both letter and envelope.______2791 manage the Council’s Undertaking. The Council pur­ chases in bulk from Rochdale Corporation. The person THE LANCASHIRE ELECTRIC POWER COMPANY appointed will be required to submit to a medical examina­ d ifjS tion and if appointed to contribute to the Superannuation Appointment of Control Room Attendant Scheme. The salary offered will be commensurate with the recommendations of the National Agreement. Candidates PPLICATIONS are invited for the position Padiham Power Station. The Engineers or possess equivalent technical qualifications. salary will be in accordance with the N .J.B. bcneauie. Applications, marked “ Electrical Engineer." to be de­ livered to the undersigned by 19th October. 1946. id Class G. Grade 9a. , Applications should be addressed to JheJResident Engi­ HARRY HOYLE. neer, The Lancashire Electric Power Company. Electric Council Offices. Clerk of the Council. ®iíL Power Station. Padiham. Lancs. Whitworth, nr. Rochdale. ¿792

-, 6 2 E l e c t r i c a l R e v i e w O ctober 4 , 1946

BOROUGH OF WILLESDEN ELECTRICITY DEPT. BOROUGH OF FINCHLEY ELECTRICITY DEPT.

Appointment ot Assistant Substation Superintendent Appointment of Assistant Distribution Engineer (Amended Advertisement) PPLICATIONS are invited for the position of an PPLICATIONS are invited for the above appointment A Assistant Distribution Engineer in the Electricity A from engineers who have had a sound technical educa­ Department at a salary in accordance with the National tion and technical and practical experience of all work Joint Board Scale. Class G. Grade 8a/1. at present connected with rotary, rectifier and static substations, £458 17s. per annum. .... who will assist the Substation Superintendent with the Candidates must be Graduate or Corporate Members of design of substations, equipment, protective and super­ the Institution of Electrical Engineers and have had visory systems, preparation of estimates and forms of experience in A.C. three-phase and D.C. distribution, tender, and the erection of all equipment and the operation estimating for switchgear and cable extensions. Experience and maintenance of all substations. Applicants must be Cor­ in the operation and maintenance of static, rotary and porate Members of the Institution of Electrical Engineers, mercury arc rectifying substations would be an advantage. or possess examinations leading to Corporate Membership. The appointment is subject to the provisions of the Local The appointment will be subject to the provisions of Government Superannuation Act, 1937, and the successful the Local Government Superannuation Act. 1937, after candidate will be required to pass a medical examination a probationary period of six months. The selected appli­ by the Council’s Medical Officer of Health. cant will be required to pass a medical examination. The Forms of application are not being issued, and applica­ salary and conditions of service will be in accordance with tions to the undersigned, containing full details of age, the schedule of salaries and conditions of employment. qualifications, past and present appointments and experi­ National Joint Board of Employers and Members of Staff. ence. should be submitted not later than 31st October. Electricity Supply Industry, Class H. Grade 8. at present 1946. endorsed “ Assistant Distribution Engineer.” Can­ £505-£532 per annum, plus car allowance in accordance with vassing any member or any officer of the Town Council, the Council’s scale, at present £75 per annum. either directly or indirectly, will be deemed a disqualifi­ Applications must be made on the application forms to cation. be obtained from the undersigned, and should be returned C. R. WESTLAKE. M.I.E.E., to the undersigned, together with copies of three recent Squires Lane. General Manager and Engineer. testimonials, not later than Monday, 28th October. 1946, Finchley. N . 3 . ______2822 endorsed “ Assistant Substation Superintendent.” Canvas­ sing in any form is prohibited and will disqualify. METROPOLITAN BOROUGH OF WOOLWICH W. T. PIRIE, ELECTRICITY DEPARTMENT Town Hall, Dyne Road, Town Clerk. Kilburn, N.W.6. : • ______2802 E.H.T. Plumber-Jointer BOROUGH OF FINCHLEY ELECTRICITY DEPT. PPLICATIONS are invited for the position of E.H.T. Appointment of Senior Demonstrator (Female) A Plumber-Jointer from Plumber-Jointers with experi­ ence in cables up to 22 kV. Conditions o f service will be in accordance with those PPLICATIONS are invited for the above appointment laid down by the District Council (No. 10), Greater London A on the permanent establishment at a salary of £304 Area. Eectricity Supply Industry, and the rate of pay per annum, plus London weighting £16, plus cost of living prevailing at the present time is 2s. 8.5d. per hour per bonus, at present £48 2s., in accordance with the Higher 47-hour week. The appointment will be subject to the Clerical Division (Female Grade) of the National Joint provisions of the Local Government Superannuation Act, Council’s Conditions for Local Authorities’ Administrative. 1937. Professional, Technical and Clerical Services. Applications, stating age and experience, should be Candidates must have a good general education and hold received by the Borough Electrical Engineer, Electric a recognised diploma in Domestic Science, and, preferably, House. Powis Street. Woolwich. S.E.18. not later than the E.A.W. Electrical Housecraft Diploma. They must Saturday. 12th October, 1946. Canvassing members of be competent to arrange and conduct lecture-demonstra- the Council, either directly or indirectly, will be a dis­ tions both in the showrooms and on consumers’ premises, qualification. and to advise consumers on the selection and use of all DAVID JENKINS. domestic electrical appliances. Experience in the control Town Hall, Town Clerk. of showroom staff and buying will be an advantage. W oolwich. S .E .18 . - 2738 The appointment will be subject to the provisions of the Local Government Superannuation Act, 1937, and BOROUGH OF DOVER the successful candidate will be required to pass a medical examination by the Council’s Medical Officer of Health. Forms of application are not being issued, and applica­ .Meter Repairer-Mechanician tions to the undersigned, containing full details of age. qualifications, past and present appointments and experi­ A PPLICATIONS are invited for the above appointment, ence. should be submitted not later than 31st October. terms and conditions as laid down by the No. 9 Area 1946. endorsed " Senior Demonstrator.” Canvassing any Joint Industrial Council: wages 2s. 4d. per hour. Appli­ member or any officer of the Town Council, either directly cants must be thoroughly experienced in the repair and or indirectly, will be deemed a disqualification. testing of all types of quarterly and prepayment meters. C. R. WESTLAKE, M.I.E.E.. Applications, with copies of recent testimonials, are to Squires Lane, General Manager and Engineer. be endorsed “ Meter Repairer-Mechanician.” and must Finchley, N.3. 2821 reach the Borough Electrical Engineer, Electricity Offices, Ladywell. Dover, not later than Wednesday, the 16th BOROUGH OF CHESTERFIELD ELECTRICITY DEPT. October. 1946. JAMES A. JOHNSON. PPLICATIONS are invited for the position of Shift Brook House. Dover. Town Clerk. A Charge Engineer in the Generating Station of the 27th September. 1946.______2819 Corporation. Candidates must have had previous experi­ ence in the operation and maintenance of water tube boilers, WEST GLOUCESTERSHIRE POWER CO. LTD. turbo-generators and auxiliary plant, rotary converting plant, and high and medium voltage switchgear. A P P L IC A T IO N S are invited for the position of . The salary will be in accordance with Grade 8, Class F Assistant in the Company’s Meter Testing Depart­ (E.P.E.A. Schedule), which is at present £442 per annum. ment at Gloucester. Applicants must be experienced in The appointment will be subject to the provisions of the the repairing and testing of all types of A.C. single­ Local Government Superannuation Act. 1937, and the phase meters. Salary, dependent upon age and ex­ successful candidate will be required to pass a medical perience. according to the Com pany’s Grading Scheme, examination. will be from £221 to £260 per annum, plus Cost of Living Applications, endorsed “ Shift Charge Engineer.” stating Bonus. age, qualifications and experience, together with copies of The selected applicant will be required to join the three recent testimonials, to be addressed to and reach the ■company’s Superannuation Scheme. undersigned not later than Monday. October 14th, 1946. Full particulars of experience, age, education and RICHARD CLEGG. technical training should be addressed to:—The Meter Town Hall. Town Clerk. Engineer. West Gloucestershire Power Company, 126 Chesterfield. 2825 London Road, Gloucester. 2807 v j u o o e r 4 , 1 9 4 6 E l e c t r i c a l R e v i e w 63

COUNTY BOROUGH OF ROCHDALE RM ATURE Winders and Improvers urgently required. A Top rates and good conditions.—Box 113, c/o The Birch Hill Institution and Hospital Electrical Review. RMATURE Winders wanted, experienced on A.C. and A D.C. repair work.—The Midland Electric Installation A PLIC A TIO N S are invited from persons nbt exceeding Co. Ltd.. Cyprus Works, Upper Villiers Street. Wolver­ of ■RiroViTTn? a&e for aPP0intm ent as Assistant Engineer hampton. 2749 j ui * I Applicants should be competent engineers A SSEM BLY Shop Foreman required by small electrical and able to take control and maintain the boiler plant, components manufacturer. Merseyside area.—Box central heating services, electrical appliances, laundry machinery, etc., etc. F.977, Lee & Nightingale. Liverpool. 2764 SSISTANT Foreman for winding department. A.C., The post is superannuate and is subject to medical examination. Salary £325 per annum rising, subject to A D C. Motors, fractional to 500 h.p. Permanent satisfactory service, by two increments of £25 per annum progressive position to suitable applicant.—Higgs Motors, to £375 per annum. No bonus is payable. Canvassing, Witton, Birmingham. 106 directly or indirectly, will be a disqualification. Candidates SSISTANT Mains Engineer. Applicants must have must disclose whether to their knowledge they are related A sound knowledge and experience of mains develop­ to any member or senior officer of the Council. ment. construction and maintenance in an extensive rural Applications, giving full particulars of qualifications and area. The salary will be in accordance with the N.J.B. experience, and accompanied by copies of not more than Schedule, at present Class F. Grade 8, commencing at three recent testimonials, should be forwarded so as to £442 per annum. Applications, with full details of educa­ reach the Director of Social Welfare. Townhead Offices. tion. training, experience and qualifications, to be sent, Rochdale, by 9 a.m. on Monday, 14th October. 1946. by October 8th. to—Buckrose Light & Power Company Limited. Central House. Kingsway. London, W.C.2. 2676 G. F. SIMMONDS. Town Hall, Rochdale. Town Clerk. SSISTANT Saleswoman required in electrical contrac­ 26th September. 1946. 2797 A tors’ showroom (London). — Box 2783, c/o The Electrical Review. CITY OF BULAWAYO, SOUTHERN RHODESIA, RITISH Engine Boiler & Electrical Insurance Com­ ELECTRICITY DEPARTMENT B pany Limited, 24. Fennel Street. Manchester 4. The Company has vacancies for Electrical Plant Inspectors in the Middlesbrough district. Permanent positions carry­ Generation Engineer ing progressive salary scale and non-contributory pension. Candidates, age 30-35. with apprenticeship and ex­ A PPLICATIONS are invited for the above appointment perience in the manufacture, repair and industrial use of from Chartered Mechanical Engineers with power electrical machinery and technical education at least station experience at six hundred pounds pressure or Higher National Certificate standard, are invited to more, to take charge of the Council’s two power stations. apply in own handwriting, stating age. qualifications and The salary will be £700 rising by increments of £25 to experience. 2810 £850. plus cost of living allowance. A house will be pro­ RITISH Engine Boiler & Electrical Insurance Com­ vided at £8 monthly rental. Contract for not less than B pany Limited. 24. Fennel Street. Manchester 4. The three years under usual service conditions. Company has vacancies for Lift and Crane Inspectors in Applications, by air mail, giving full details of experi­ the North East Coast district. Permanent positions with ence. accompanied by an unmounted photograph, should progressive salary scale and non-contributory pension. be received by the undersigned not later than October Candidates, age 30-35. with sound training in lift or 20th. 1946. The successful applicant’s passage money will crane construction and having electrical and mechanical be refunded and salary paid from date of leaving England. experience, are invited to apply in own handwriting, stat­ ing age, qualifications and experience. 2810a H. /'''(ABLE J. COOK. Jointer.Town Clerk. Electrician reouired with sodnd 2831 ^ knowledge of laying and jointing L.T. paper insulated lead covered cables, together with experience of general Showroom Assistant required for electrical shop. Great electrical installation work and the maintenance of a A Yarmouth. Apply, stating past experience, age and bulk supply distribution station. Applications, stating commencing salary.—Box 9666, c/o The Electrical Review. age and exnerience, to be submitted to the Engineer and Young Assistant with some experience wanted for Manager. Electricity Dept., Bo'ness, West Lothian. 2809 A estimating office. An opportunity with prospects for /'CLERICAL Assistant required for stores office. Must capable young man. State age. salary and experience.— have good knowledge of electrical material.—London Electrical Installations Ltd., 65, Vincent Square, West­ Electrical Co., 92, Blackfriars Road. S.E.l. 104 minster. S.W.l. 2833 LERK, experienced in the preparation of accounts N Estimating and Supervising Engineer for London C for large electrical installation contracts. Preference A contractors’ office. Permanent position for enter­ given to one able to measure work on site. Salarv £350- prising man with knowledge of good class work. Applica­ £400. Apnly. giving full particulars to—Box 2828, c7o tions will be treated confidentially. State age, salary to The Electrical Review. —Box 2834, c/o The Electrical Review. /'"'ILERK required for electrical department of well-known A PPLICATIONS are invited for the position of Designer ^ London builders’ merchants. Must be experienced in for A.C. motors up to 250 h.p. Should be top-line wholesale handling of lighting fittings, fires and accessories, man capable of taking complete.charge of design at works cable, etc. Good permanent position with increasing pros­ of a large manufacturer in the North of England. Appli­ pects. Five-day week. Write, stating age, experience cants should be between 30 and 45 years of age and possess and salary required, to—R. F.. W. N. Froy & Sons Ltd.. knowledge of all types of induction motors, both single Brunswick Works, Hammersmith, W.6. 2730 and polyphase. Excellent prospects and permanency for the right man. Please state age, details of education, /COPYW RITER required for technical and service in- training, experience and salary expeffted.—Box 2773, c/o ^ struction manuals, catalogues and sales literature, for The Electrical Review. light engineering company producing semi-automatic A PPLICATIONS are invited from Transformer Design- machines, in West London. Technical knowledge essential. ing Engineers (Senior and Junior) for employment Main qualification must be ability to write in concise and with the Metropolitan-Vickers Electrical Co. Ltd.. Trafford easily readable manner. Position offers every scope. Park, Manchester. Applicants should state age, full parti­ Please submit details of experience, salary required, age. culars of education, general and technical, apprenticeship, etc.. to—Box 2746. c/o The Electrical Review. practical training and design experience (the latter not /CRAFTSMEN in Industrial Power urgently required. essential for junior applicants). Apply in writing to— ^ Apply to—Premier Electric Services. Friar Works. The Personnel Manager. Metropolitan-Vickers Electrical Willow Street. Leicester. 2630 Co. Ltd.. Trafford Park, Manchester. 2762 ESIGNER-Draughtsman required to work on range of RMATURE Winder for repair shop.—Boys Ltd., 187. D ironclad oil circuit breakers for voltages up to 11.000 A Goswell Road. E.C.l. 2720 and conforming to standard specifications. Position offers RMATURE Winder or good Improver required, used excellent prospects for advancement for capable draughts­ A to all types of motors. Knowledge of dismantling man able to make all calculations and work on own and assembly of motors a good advantage. Apply to— initiative. Salary according to qualifications and experi­ Messrs. Charles H. Harwood & Co. Ltd.. 32, Meyrick Road. ence. Write, giving full details.—Box 2771, c/o The Willesden. N .W .10 . Electrical Review. RMATURE Winders and Improvers required. A.C. RAUGHTSMAN required, must be experienced in all A and D.C., top rates, good working conditions.— D types of transformers up to 1.000 kVA. Apply, Electrical Power Repairs (Gillingham) Ltd., Strover stating age, experience, salary required, to—Brentford Street, Gillingham. Kent. Transformers Ltd., Windmill Road. Brentford. Middx. 2691 64 E l e c t r i c a l R e v i e w October 4, 1946

ESIGNER-Draughtsman for supervisory position for LECTRIC Motor Fitters required, dismantling and D developing lift control gear. Only fully experienced E assembling motors in repair shop.—The Midland men need apply. Permanent position with good salary Electric Installation Co. Ltd., Cyprus Works, Upper ViUiers and prospects for the right man. Northern district. State Street, Wolverhampton. age, experience and salary required.—Box 2602, c/o The LECTRICAL Accessory Designer required by company Electrical Review. E with excellent programme and resources. Must be ESIGNER-Draughtsmen, age 25 to 45, required, with capable of basic design on electrical lighting fittings, D sound engineering training and good drawing office electrical appliances, and accessories. Reply, stating pre­ experience in one or more of the following: Industrial vious experience, salary required, and include testimonials. building construction, heating and ventilating, calenders, — Box 2619. c/o The Electrical Review. coating and reeling machinery, electrical power and light­ LECTRICAL contractor with large business has ing installations, oil heating, refining and general chemical E vacancy for responsible man having knowledge of plant. Applications, accompanied by full details of educa­ buying, invoicing, etc. Permanency. State age, ex­ tion. training, experience and positions held, with salaries, perience and wages.—Box 2835, c/o The Electrical Review. should be addressed to —The Personnel Manager, Jas. LECTRICAL Remote Control Engineer required with Williamson & Son Ltd., Lune Mills, Lancaster. 2726 E first-rate knowledge of relays and timers, capable of RAUGHTSMAN, Assistant, London, W.C.l. for work preparing estimates and dealing with correspondence, by D on audio-frequency equipment and associated high- electrical manufacturers South-East London area. State grade light engineering products, progressive salary for age, experience and salary required.—Box 2652, c/o The young applicant with some technical training. State age, Electrical Review. experience, salary required.—Box 2800, c/o The Elec­ TT'LECTRICIAN, thoroughly experienced in motor car trical Review. and radio work.—Edwards & Co. (Bournemouth) Ltd., RAUGHTSMAN required by cable manufacturers at 189-193. Old Christchurch Road, Bournemouth. 2636 D Hebburn for design and development of electrical NGINEERS and Draughtsmen are invited to apply to accessories. Applicant for this progressive post must have E a large electrical engineering firm in the Midlands potential administrative ability sufficient to take charge of which has vacancies in the switchgear department for and expand small drawing office. Starting salary up to Technical Sales. Contract, Costing and Design Engineers; £400 p.a. according to age and suitability.—Box 2772, also experienced Technical Engineers capable of handling c/o The Electrical Review. large projects for generation, transmission and distribution. RAUGHTSMAN, to take senior position in small Vacancies also exist for Draughtsmen for circuit diagram D office, London, must have completed sound works and general work.—Box 69. c/o The Electrical Review. training, instruments or light electro-mechanical design, X^XPERIENCED Lady Clerk required in electrical con- electrical knowledge an advantage. State full details, -*-i tractors’ office (London). — Box 2782, c/o The age, salary required.—Box 2801, c/o The Electrical Electrical Review. Review . T^XPERIENCED Oil Engine Fitter required by small RAUGHTSMEN, preferably with telecommunications rural electricity undertaking in South-West. S.D.R. D experience, required by large firm in the Midlands. 26.27d. per hour; higher rate for first-class man. House Maximum salary £350 plus cost of living bonus. Write, will be available.—Box 9674, c/o The Electrical Review. giving details of experience, age, and salary required.— OREMAN Stem-maker required. Must be able to take Box 11. c/o The Electrical Review. F charge of whole department and be conversant with raughtsm en, r. b. Puiiin & Co. Ltd., Phoenix different types of stem-making machines, particularly those D Works. Great West Road, Brentford, have vacancies for standard lamps; also special miniature stems for fluores­ for the following personnel: (a) Senior Draughtsman, cent lamps, etc. Good salary. Modern factory. Applicants thoroughly experienced in f.h.p. motor development and to apply to—The Manager, British Luma Co-op. Elec. production design, to take charge of and be responsible for Lamp Society Ltd., Hardgate Road. Glasgow, S.W .l. 2787 output, limiting and accuracy of small section, under de­ UNIOR Draughtsmen required for North London area, velopment engineer; (b) Designer-Draughtsman,thoroughly J preferably experienced on transformers. Five-day week. experienced in small electro-mechanical and instrument Write giving full details age and salary required.—Box work. Only versatile men able to work under verbal 9671, c/o The Electrical Review. instruction and capable of taking full responsibility for their work need apply. Applications should be in writing, TUNIOR Engineer required for the laboratory of a and contain full details of educational and commercial London firm of radio component makers. Degree or experience. Good salary and prospects are offered to the equivalent essential. Salary £400 upwards according to qualifications.—Box 2711, c/o The Electrical Review. right men. 2789 RAUGHTSMEN (Senior) required for large A.C. and TUNIO R Research Engineer required for HV insulation D D.C. machines, including turbo and waterwheel alter­ and other investigational work in connection with nators, also for medium type A.C. and D.C. machines. switchgear and associated products. Minimum educational Applications from men with suitable technical qualifica­ standard. Higher National or Ordinary B.Sc. in electrical tions and good general mechanical drawing office experience engineering, and some previous industrial experience will be considered. Salary dependent upon qualifications preferable. Apply, stating age, qualifications and salary and experience. Apply, giving full details of the quali­ required, to—Box 2793, c/o The Electrical Review. fications, experience, age and salary required, to—Chief T ABORATORY Assistant for experimental and develop- Draughtsman. Engineering Drawing Office, The General ■U ment work in connection with watt-hour meters and Electric Co. Ltd.. Witton, Birmingham, 6. 2661 instruments of a like nature. Salary £350 per annum. RAUGHTSMEN with experience in cable layouts Write stating age and experience.—Box 2594, c/o The D required. Salaries in accordance with experience, plus Electrical Review. 25% war bonus, plus staff bonus. Apply in writing, giving T ARGE firm in London area has vacancy in its research age and full particulars, not later than 18th October next, and development department for a mechanical or elec­ to—The Associated Portland Cement Manufacturers Ltd.. trical engineer, to cyry out the design and experimental Works Dept., 192, Ashley Gardens, London, S.W .l. 2756 work in connection with small electro-medical devices.— ASCO Electrical Ltd. have vacancies for (a) Production Box 2786, c/o The Electrical Review. E Assistant, capable of laying out and supervising T EA D IN G engineering organisation requires Sale?» assembly of electrical equipment, must possess full elec­ ^ Manager for battery electric vehicles. Engineering trical and technical knowledge L.F. and H.F. circuits and education to degree standard and subsequent industrial rectifying equipment; (b) Toolmaker, for shetc metal sec­ experience are essential. Ability required to organise and tion. to design and make own jigs and tools and supervise control sales and service, undertake market research and same. Both positions are permanent and progressive. sales campaigns. Exceptional prospects.—Box 2723, c/o Apply in writing.—Brighton Terrace. Brixton. S.W.9. 2742 The Electrical Review. LECTRIC lamp factory requires Maintenance Engineer, "VTANAGER or Manageress of good appearance and E should have knowledge of all electrical and mechanical personality required for high-class electrical and radio problems relating to repetition machines and general fac­ retail and art goods business. 30 miles from London. Must tory maintenance. Applicants should state salary required be thoroughly capable and able to take full control. Write and previous experience.—Box 9665, c/o The Electrical with particulars, stating age. experience and salary re­ R eview . quired.—Box 115, c/o The Electrical Review. LECTRICAL Draughtsman required immediately at 1\/rANAGING Director. Applications are invited from E industrial works in Kent. It is desirable that the TtX qualified Electrical Engineers for the position of applicants should possess the Higher National Certificate Managing Director of an electrical manufacturing company. in Electrical Engineering or its equivalent. Work involves High executive experience and an established position in technical knowledge of surveys and estimating schedules. the industry essential. Remuneration £5.000 per annum, Apply, stating age, to — Box 2663, c/o The Electrical with good prospects. Pension scheme. State age, qualifica­ Review . tions, experience. 'Box 2675, c/o The Electrical Review. October 4, 1946 E l e c t r i c a l R e v i e w 65

M A'! S S n,„Pla^ Ltd- Park Works’ Manchester 10. EQUIRED by large oil company for duty in Palestine, design o£ lL ? e n c n’ i5 xperienSecl in the mechanical R Iraq, etc.: Electrical Engineer. To possess either .J R DC- machines and rotaries. Write. electrical engineering degree, membership or associate Department penence> and salary desired to Employment membership of the Institution of Electrical Engineers, or equivalent technical qualifications. Extensive practical /"VLD-established consulting mechanical and electrical experience with medium-sized H.T. and L.T. Diesel-driven engineers, London, seek Junior Partner, age 30/45, generating stations, distribution systems and switchgear is chartered mechanical and/or electrical engineer, preferably essential: and drawing office experience and practice in university degree. First-class previous experience essential, the administrative routine of estimating, correspondence either as contractor, consultant or purchaser of some or all and the control of staff is also required. Age desirably not of the following mechanical building services—heating, air exceeding 40. Salary not less than £1,000 per annum, with conditioning, electrical equipment. Working knowledge free quarters (or allowance in lieu) and certain temporary building concrete and drainage desirable. Only highest and variable allowances related to living costs. No married calibre applicant considered. First-class testimonials and accommodation would be provided for at least the first proof integrity required. Remuneration by share in profits three years. Applications, quoting reference EEPL, to— with guaranteed minimum depending status and qualifica­ Box 1337, c/o Charles Barker & Sons Ltd., 31, Budge tions. No investment required. Strict professional con­ Row. London, E.C.4. 2784 fidence maintained.—Box 2788, c/o The Electrical Review. ^ A LE S Manager required for London office with good ACKER and Storekeeper required. first-class, ^ experience in the home market for the sale of P thoroughly experienced.—M. F. & Co. Ltd., 37. bakelite electrical _ accessories, advertising experience Aylmer Parade. N.2. 2812 advantage. Write in first instance with full particulars LUMBER-Jointer required for L.T. and H.T. mains. to—Imp Radio Ltd., 37b , New Cavendish Street. P N.J.I.C. rates paid (Area No. 9).—Farnham Gas & London W .l. 2804 Electricity Co., East Street, Farnham, Surrey. 2659 OENIOR Cost Clerk required for company in London OWER Station Shift Charge Engineers, age 30 to 45. ^ manufacturing electric wires. Experience in this in­ P required for new industrial power station. Practical dustry preferred, but not essential. Write full particulars, experience in operating high pressure water tube boilers including age and salary required, to—Box 2731, c/o The and turbo-alternators essential. Applications, to be accom­ Electrical Review. panied by full details of education, training, experience QENIOR Draughtsmen required for: (a) Steam, and positions held, with salaries, should be addressed to ^ hydraulic and air services network, co-ordinated —The Personnel Manager, Jas. Williamson & Son Ltd.. with plant layout and foundations, (b) Design of Lune Mills, Lancaster. 2725 special purpose machinery, including mechanical handling RODUCTION Manager required by electrical and equipment, etc. (c) Electrical distribution draughtsman P general engineering firm in Lancashire manufacturing to co-ordinate this service with plant layout. Applications, domestic appliances. Must be qualified technically and stating age, qualifications, experience and salary, to the practically in modern production methods and processes, Personnel Manager. The Firestone Tyre & Rubber Com­ be thoroughly experienced in all stages of production, pany Limited, Great West Rd., Brentford, Middx. 2 8 0 3 a capable of operating factory at highest efficiency on mass ENIOR Engineer required for the laboratory of a production lines. Good salary and prospects offered. Full S London firm of radio component makers. Degree details of experience, posts held and work done, together or equivalent with industrial experience essential. Salary with remuneration required, to—Box 2567, c/o The Elec­ £500 upwards according to qualifications.—Box 2712, c/o trical Review. The Electrical Review. RODUCTION Superintendent required by leading O ERVICE Engineer wanted for electro-medical trade. P engineering organisation to take full control of depart­ ^ Must have sound electrical and practical experience. ment producing medium electrical equipment. Education State salary. Particulars to— Electro-Medical Supplies to degree standard and experience in works management Ltd., 209b, Great Portland Street, London. W .l. 2751 are essential. Exceptional prospects available for man OHORTHAND-Typist required for electrical contractors’ with vigorous personality and successful record.—Box 2724, ^ office, filing and telephone. Good prospects for smart c/o The Electrical Review. young lady.—Rogers, 7/9, Bloomsbury St., W.C.l. 2634 U ALIFIED Engineer for electrical design work in con­ PEEDY & Eynon Ltd. offer an attractive proposition Q nection with high voltage equipment. Age 25-35. S to a first-class Representative with electrical experi­ B.Sc. or equivalent, with ability in application of mathe­ ence. and with own car, to obtain contracts for all types matics to design problems. Write, giving full details of of electrical installations in Brighton, Bournemouth and training, experience and salary required, to Staff Officer. South Coast areas. Liberal commission will be paid, and British Insulated Callender’s Cables Ltd., Erith, Kent. the representative appointed will receive the maximum Ref. SR/7. 2754 technical and commercial support from a highly efficient UALIFIED Engineer, with- B.Sc. or other degree, organisation. Applications, giving full details of experi­ Q electrical, mechanical, marine, has opportunity in­ ence. etc., should be addressed to—Speedy & Eynon Ltd.. creasing responsibilities and remuneration with British firm 16 3a, Strand, W .C.2. 9605 trading in East. Commencing remuneration £800-£1.000, STO REKEEPER for contractors, must also be able to plus current cost-of-living allowance according to quali­ drive, state experience and wages (own handwriting), fications. Outfit allowance, free passages, full pay on London.— Box 2808. c/o The Electrical Review. leave, pension and other benefits. Preferably single, not SUPERINTENDENT of Test Gear Section required by over 32. Reply, giving full details experience, qualifica­ tions. to—Box No. 174, Foster, Turner & Everetts Ltd., ^ London firm of radio component makers. The 11, Old Jewry, London, E.C.2. 2766 responsibility involves design and maintenance of elec­ tronic test equipment. Degree or equivalent with ATE-fixer and Process Engineer required by firm industrial experience essential. Salary £500 upwards R manufacturing low frequency amplifiers and kindred according to qualifications.—Box 2710, c/o The Electrical equipment. Previous experience in a similar capacity Review . essential. West London district. Write, stating age, RANSFORMER Engineer-Estimators urgently re­ experience and salary required, to—Box 2748, c/o The T quired by Johnson & Phillips Ltd. Experience Electrical Review. essential in the preparation of tenders for all classes of EPRESENTATIVE calling on provincial houses re­ power transformers, large and small. One appointment R quired to handle high-class wrought iron fittings and will particularly concern export work and details of ex­ lampshades for well-known London manufacturer. Write— perience in this should be stated. The Company is also Box PP4585, Samson Clark, 57/61 Mortimer St. W .ll. 2794 still open to consider applications from experienced EPRESENTATIVES for high-class lampshades and transformer draughtsmen. Apply, stating age. experience, R domestic heaters wanted, to call on wholesalers and training and salary required to the Employment and stores, for the following districts: Cheshire. Lancs., Nor­ Welfare Dept., Johnson & Phillips Ltd., Victoria Way. folk. Suffolk. Northampton, Shropshire, Hants and whole Charlton. S.E.7. 2798 of West of England—Box 2743, c/o The Electrical Review. \\T ANTED for a Research Establishment at Elstree: — EQUIRED an Assistant Electrical Engineer for 2 Designer Draughtsmen, experienced in the develop­ R mining concern in South India. Applicants should ment of mechanical and electrical precision mechanisms. be corporate members of I.E.E.. and should have received Good knowledge of electrics an advantage. 2 Junior a thorough practical training in a large supply* under­ Draughtsmen, capable of detailing from development taking or mining concern. Preference will be Kiven to drawings of mechanical and electrical precision man with experience of the maintenance of large steam mechanisms. Opportuility for advancement to up-graded and Diesel Power stations and experience in mining positions. Draughtsman experienced in the preparation electric equipment and electric hoists. Apply with f of factory maintenance drawings, and who is capable of particulars of training and experience to—Box No. B.doi. detailing. Apply, stating age. experience and salary c/o Streets. 110. Old Broad St., London. E.C.2. 2796 required to—Box 2799, c/o The Electrical Review. 6 6 E l e c t r i c a l R e v i e w October 4, 1946 fT'ECHNICAL Estimator, -with electrical engineering LECTRICAL Engineer, age 40, seeking change of -1 - training up to National Certificate standard, required E position, requires post in supervisory capacity where for firm of electrical engineers in Essex. Write, stating wide experience in installation and maintenance could be age, experience and salary, to—Box 2753, c/o The Elec­ used to advantage.—Box 9614, c/o The Electrical Review. trical Review. TT'LECTRICAL Engineer. A.M .I.E.E.. aged 34. released ^TRANSFORM ER Designer (Junior) required for all types H i r a.F. Class A, desires appointment (preferably with of transformers up to 3.000 kVA, 33 kV. Reply, consulting engineers). 15 years’ experience electrical plant stating age, experience and salary required, to—Works inspection and maintenance. Qualified to advise on main­ Manager. Transformers & Welders Ltd., Sandown Road. tenance planning and efficient plant operation, including Watford. 2741 compliance with regulations. Considerable technical and TT/'O RKS Manager (British) of established electric cable business ability and able to prepare reports and schemes. * ’ factory in the East requires an Assistant possessing Must be position with scope for increased responsibility practical experience and theoretical knowledge of V.I.R. with resulting remuneration.— Box 9620, c/o The Electrical and P.V.C. cable manufacture, embracing wire drawing, Review . turning, stranding, rubber compounding, tape spreading, LECTRICAL Engineer, A.M .I.E.E.. aged 34, released longitudinal covering, armouring and testing. Knowledge E R.A.F. Class A. desires senior appointment with of wire enamelling an advantage but not essential. Excel­ scope and first-class opportunities to attain managerial lent opportunity for the right man. Free furnished position. 15 years’ experience electrical and mechanical quarters, free medical attendance and participation in plant inspection, maintenance, repair and installation work. provident fund. Three years’ agreement (with proba­ Has ideas for planned maintenance of plant. Considerable tionary clause) and option of renewal. Passage paid out technical and business ability. Highest references. Box and home to selected applicant. Apply giving following 9619, c/o The Electrical Review. particulars: (1) Qualifications: (2) Position held past ten LECTRICAL Engineer requires change: seeks respon­ years; (3) Age: (4) Married or single: (5) If married, state E sible progressive position: 17 years’ experience in if desirous of family accompanying: (6) Names of two general and marine electrical engineering, including references as to ability: (7) Salary required.—Box 2655, installation, manufacture and maintenance.—Box 9685, c/o The Electrical Review. c/o The Electrical Review. T^TO RKS Manager required for light electrical engineer- TT'LECTRICAL Engineer (41). active and versatile, with * * ing factory in South London area. Should be quali­ -t-J practical, technical and commercial experience motors, fied engineer able to take complete control of factory. control gear, transform ers and instruments, seeks position Experience in improving production methods, institution with scope in commerce or industry, at home or abroad.— and control of progress, planning and rate-fixing systems, Box 9622, c/o The Electrical Review. etc.. essential. Experience in electric motor production LECTRICIAN with 21 years’ practical experience of and ancillary apparatus, although not essential, would be E industrial and general electrical power, fighting and an advantage. Reply stating age, qualifications, experience plant installation, maintenance and inspection, seeks per­ and salary required.—Box 2572, c/oThe Electrical Review. manent progressive change. Present position held eleven OUNG Electrical Engineer required by Electrical years. Single, good appearance and address. Willing to Y Motor Manufacturers, to assist in the Estimating and travel home or abroad—Box 8682, c/o The Electrical Design Department. S.E. London area.—Write, stating Review . age, experience, and salary required.—Box 2692, c/o TT'LECTRICIAN, 23 years’ experience, desires change or The Electrical Review. -1-^ partnership. Installation work, all classes, also OUNG man required for electrical dept, of large whole- household refrigerator and radio repairs.—Box 9680, c/o J- sale firm to serve as Counter Hand with view to tfain- The Electrical Review. ing as outside Sales Representative in London area. Appli­ LECTRICIAN. 25 years’ exp., industrial installation, cations, giving details of experience and age, to—Box E A.C. and D.C. motors, automatic control, switchgear, 2763, c/o The Electrical Review. cabling and jointing, complete installations, first-class work. APPOINTMENTS FILLED -Box 9681, c/o The Electrical Review. 'X-Branch Manager of electrical wholesalers seeks post, Dissatisfaction having been so often expressed that un­ E 1 3 buying, managing, orders; 4 years with Superlamp successful applicants are left in ignorance of the fact that Ltd., age 37, married, ex-R.A.F. Commence at once. the position applied for has been filled, may we suggest Office, or travelling considered. Over 20 years’ experience. that Advertisers notify us to that effect when they have arrived at a decision? We will then insert a notice free —J. Banks. 63, Consfield Av., New Malden, Surrey. 8635 of charge under this heading. T^X-R.E.M .E. officer (26). Grad. I.E.E.. Higher National >OX 2570—Lady Clerk. All applicants are thanked. Diploma Electrical Power Engineering, seeks pro­ gressive appointment in electrical industry. Experience in B c manufacture and testing of generators, motors and power SITUATIONS WANTED transformers, also maintenance and repair of many types DVERTISER, aged 34, requires position in good-class radar and communicatioris equipment; responsible work­ A Electrical and Radio concern. Can take full charge. shop and staff appointments held.—Box 9613, c/o The West End buying and selling experience. Good practical knowledge electrical appliances and radios. Ex.-R. Signals. ^ x r-S^lifdronWLeaU Y ER (31), 12 years’ experience electrical engineering, post in or near London with prospects in Technical Sales -1 -* seeks change. Sound knowledge of sources of supply, or Production side of fight electrical engineering company. accustomed to control of staff.—Box 9667, c/o The Elec­ Technical, organisational and executive experience in trical Review. R .A .F . R ad ar work. W idely travelled. W illing to undergo APABLE Electrician, civilian and R.A.F. experience, period of training.—Box 9683. c/o The Electrical Review. C desires progressive situation, home or overseas.— Box XPORT Engineer (35). conversant with foreign speci­ 9627, c/o The Electrical Review. E fications, Continental Engineering Degree (British H IEF Designer-Draughtsman desires position London, national). A.M .I.E.E., excellent linguist, ex-Admiralty Interpreter, registered Disabled Person (no visible dis­ C 17 years’ experience on research and production design ability) after R.N.V.R. service (Electrical Branch), seeks of radio equipment and measuring instruments, domestic responsible position with Technical Export organization. appliances, light mechanisms, etc.—Box 9608, c/o The —Box 8662, c/o The Electrical Review. Electrical Review. H IEF Electrical Engineer of large steelworks, success­ OREMAN Electrician (50), just completed large con­ C ful and wide experience, previously 18 years with F tracts. seeks similar situation, used to control electrical plant manufacturers, giving satisfaction to planning, estimating; 34 years’ experience all classes of present principals but desires change to South or S.W. work.— Abraham , 9. D ale R oad, Crayford. K ent. 8655 England. Technical representation required where execu­ RAD. I.E.E. (23), indentured apprenticeship. Higher tive ability is called for.—Box 8661, c/o The Electrical G and ordinary N.C. desires progressive position, home Review . or abroad.—Box 9617, c/o The Electrical Review. RO OKERY Sales Demonstration. Young man (33), O N O U RS Graduate (Mechanical Sciences Tripos) ^ with E.D.A. certificate, offers services to a go-ahead H A.M .I.E.E., seeks a position offering good prospects Electricity Showroom or Manufacturer.—Box 8651, c/o and opportunity to use 16 years’ experience in design and The Electrical Review. application of Motor Control and Protective Apparatus.— T^LECTRICAL/Mechanical Engineer (42), A.M.I.E.E., Box 86f 8. c/o The Electrical Review. ex-public school, desires permanent, progressive, EEN Electrical Engineer, 21 i years, desires further executive position in the South. Works experience covers K experience. H.N.C., 7 years’ apprenticeship in all both production and plant maintenance, layout of all types branches of public distribution authority. Would accept electric furnaces, hydraulic presses, machine tools.—Box suitable post in any district and give service to obtain re­ 9672, c/o The Electrical Review. quired experience—Box 9669, c/o The Electrical Review. October 4, 1946 E l e c t r i c a l R e v i e w 6 7

with 30 years’ experience London wholesale trade, NORTH-WEST MIDLANDS JOINT ELECTRICITY slnd to S f orders and assisting buying, would be AUTHORITY fSmntiL O mterested houses in London and Home t o SSSS’T 8“ 9686’ c/oThe Electrical Review. FFER S are invited for 150 Met. Vick. 2.5-ampere. 230- Jr u Jomter. experienced E.H.T. and L.T. cables. O volt, 50-cycle, type N.A. Is. coin “ off-circuit ” Meters. Offers to F. Favell. M.I.E.E.. Chief Engineer Electrical R evieW .SetViCeS' etc’- B o* 9677’ Th* and Manager, Kingsway, Stoke-on-Trent. 2*733 Q TO REKEEPER (Chargehand), 18 years’ experience of wuurlif etectncal trade, desires situation with prospects. Cooksley & Co. Ltd. offer large selection of used 5 k xS + • situation outside London.—Box 8636, c/o A • Electric Motors. A.C. and D.C. Write—21/25. The Electrical Review. Tabernacle Street. London. E.C.2 (Monarch 3357/58). 46 T ^ E L D IN G Engineer (38), extensive experience of welded number of Lighting Sets from £-10 kW. Petrol and design and production, welding plant design and lay­ A Diesel driven, 110 or 220 v. D.C., of various des­ out, sales and sales organisation, seeks position offering criptions. Further details from—The Electroplant Co.. scope for ability, either home or abroad.—Box 9668. c/o Wembley. Middx. 2780 The Electrical Review. number Of unused portable petrol-driven Welding Sets, A suitable for use with electrodes, sizes 6 to 12.—Fyfe, ______AUCTION NOTICES Wilson & Co. Ltd.. Bishop's Stortford. 2816 quantity new 7/.029 V.I.R. Flat Twin Cable, £25 per G. R. A 1,000 yards.—Imperial Lighting Co., Pocock Street, By direction of the Ministry of Supply. London. S.E.l. (Tel. Wat. 4782). 9663 FULLER, HORSEY, SONS & CASSELL A .C. and D.C. House Service Meters, all sizes, quarterly . are instructed to offer for Sale by Auction in lots at and prepayment, reconditioned, guaranteed one year. Woolwich Arsenal, London, S.E., on Tuesday. October Repairs and recalibrations.—The Victa Electrical Co., 47, 22nd, and day following, at 11 o’clock precisely each day : Battersea High Street, S.W .ll. Tel. Battersea 0780. 19 GENERAL INDUSTRIAL EQUIPMENT AND .C. and D.C. Motors, all sizes, large stocks, fully SURPLUS STORES A guaranteed. — Milo Engineering Works, Milo Road. including: 105 Electric Exhaust Fans. 650 Grindstones, East Dulwich. S.E.22 (Forest Hill 2278-9). 102 75 Hand Trucks, 2.300 Pigeon Baskets, 120 Vices, .C. and D.C. Motors, £ h.p. to 15 h.p. Service Electric 90 Anvils and Swage Blocks, 1,750 Trays. 40 Engine-driven A Co. Ltd., of Abbey Manufacturing Estate, Alperton, Foam Generators, 250 Grease Guns, 30 tons Bolts and Nuts, have a few motors available for immediate delivery. 2806 100 Engines, 250 Electric Motors, 700 Pumps, 350 Pressure .C./D.C. 5-valve Superheterodyne Sensitive 3-wave Gauges, 650 Sledge Hammers, 600 Mattocks, 2,100 Wire A Band Receiver. Excellent tone. Attractive modern Cutters, 4,500 Lamps, 1,000 Sheave Blocks, 500 Drawing cabinets in ” Plastele ” or polished wood, £16 16s. Usual Boards. 4,000 Leather Straps, 2 tons Emery Cloth, trade terms and facilities. Early delivery. Trade only.— Physical and Chemical Laboratory Equipment, and a wide Morgan, Osborne & Co. Ltd., Southview Road, Warling- range of other Stores and Equipment. ham, Surrey. 110 Catalogues (6d. each) may be had when ready from .C. Motor and Control Gear, 150 h.p., 575 r.p.m., 400 Fuller, Horsey, Sons & Cassell, Industrial Auctioneers. 10. A volts, 3-phase, 50 cycles, with B.L. and S.C. gear Billiter Sq.. E.C.3 (Telephone No. ROYal 4861). 2589 and double hel. red. gear, 575 to 136 r.p.m., on one bed­ plate with control gear. All by Metropolitan-Vickers.— ______* F O R S A L E Box 2722, c/o The Electrical Review. .C. Motors for 400/440-volt. 3-phase, 50-cycle supply. Traders buying and selling hereunder must observe the A One 100-h.p., 580-rev. G.E.C., slip-ring. Eight Restriction of Resale Order. S. R. & O. 1942 N o. 958. 30-h.p.. 720-rev. Met.-Vick., slip-ring. One 60-h.p.. 480-rev. Westinghouse, slip-ring. Two 35-h.p., 580-rev. GOVERNMENT SURPLUS STORES Crompton, slip-ring. One 14-h.p., 960-rev. Wright, squirrel cage.—Newman Industries Limited, Yate, Bristol. 2622 rp H E Ministry of Supply has for immediate disposal the .C. Motors. l/75th h.p. to 5 h.p., all voltages. Also following Petrol Engine-driven Generating Sets, located A D.C.—The Johnson Engineering Co., 319, Kennington as shown below. Road, London. S.E .ll. Telephones. Reliance 1412/3. 57 AR3349, AG/G/-458/65/541-712. H.D. A565236/43/ TTRACTIVE Lampshades, exclusive designs available E.52. A/C 741, Depot Serial No. 61/3/130. 172 Petrol A for the Christmas trade. Prompt deliveries.—The Engine-driven Generating Sets, 1£ b.h.p., J. A. Prestwich British Bright Light Co. Ltd.. 266-268, Battersea Park (A. Lyon) engine, 0.36 kW, 14/20 volts D.C. : Lancashire Road, S.W.ll. 2734 Dynamo generator. Condition unused, with canvas covers, UDAX Ltd. now have available an extensive range of spares in cases for 156 sets only. Located at 61 M.U., A new season’s designs of high-class Lamp Shades in R.A.F., Handforth, Cheshire (Blister Hangar, bottom of Plastics and Parchment, together with a range of Table shed opposite rack 21-24, 17-18, 1-2, Bay 29-28). For Lamps. Prompt delivery available to all parts of the sample inspection only by appointment contact Wing- country. Enquiries particularly invited from wholesalers Commander Supply, 61 M.U., R.A .F., Handforth, Cheshire and electrical factors.—84. Preston Road. Brighton (Tel. (Tel. No. Bramhall 2020. extn. 129). Preston 5565). AR 3349, AG/G/-458/65/101-314, H.D. 42S67, Depot & W. Water Tube Boilers for disposal. Two 50.000 Serial No. 25/6/275. 214 li-b.h.p., J.A. Prestwich B lbs. evaporation, 310 lbs. w.p.; two 50.000 lbs. engine, 0.36 kW. 14/20 volts D.C.. Lancashire Dynamo evaporation, 220 lbs. w.p.', one 20,000 lbs. evaporation, generator. Condition unused, complete with canvas cover, 175 lbs. w.p.; one 12.000 lbs. evaporation. 200 lbs. w .p.: spares in cases. Located at 25 M.U., Hartlebury, Worcs. two 16,000 lbs. evaporation, 190 lbs. w.p.: one 9/10.000 (Bay 4 and Shed 22, 1 Shed 6 Site). For sample inspec­ lbs. evaporation, 200 lbs. w.p. We install CiDmplete, in­ tion only, by appointment, contact Officer Commanding, cluding brickwork. Economisers. Pumps. Pipmg. Valves. R.A.F. 25 M.U., Hartlebury, Wores. (Tel. No. Kidder­ Generating Sets and Motors in stock. Please send us your minster 3411). enauiries; we can give immediate delivery. — Burford, Arrangements for sample inspection only can be made Taylor & Co. Ltd.. Boiler Specialists, Middlesbrough. by prior application to the addresses named. Purchasers Telephone. Middlesbrough 2622. 32 must take delivery free on rail location within two weeks ATTERY Chargers for home and export. 4 models. of the date of issue of release instructions. 2-6-12 V 1 2 or 4 amp. D.C., any mains voltage. Offers for any or all of these items are invited. No B forms of tender are necessary, and letters should be Generous trade' terms. Write for catalogue.—1The Banner addressed to Ministry of Supply, Director of Contracts, Electric Co. Ltd.. Hoddesdon. Herts. Tel.. Hoddesdon Great Westminster House, Horseferry Road, London, 2 6 5 9 . S.W .l, to arrive not later than 10 a.m. on 28th October, EEANTEE Festoon Striplight Holders, made of X20 1946. B Bakelite. for use with 7/.029 T.T.R. cable. require Envelopes must be marked “ Tender No. 285901.” re­ no tools or screws for wiring. Immediate delivery of any turnable 10 a.m. on 28th October. 1946. Failure to mark quantity. Passed by the Are authorities. Used by cor­ the envelope correctly may result in a tender not being porations and supply companies all over the world. Large considered. quantities of British made Electric Lamps and U&hle Any contracts made as the result of this tendering will always in stock.—The Beeantee Illuminations (London) be subject to the Department’s conditions of sale, copies Ltd., Temporary Address, 6, Upper Street, Islington, of which may be obtained, if desired, from the Ministry London. N.l (Phone, Canonbury 4555). 71 of Supply, Directorate of Disposals (RE), Room 603, .T.A. A comprehensive service is now available for Great Westminster House. Horseferry Road. London. B all classes of tools and equipment for the accumu­ S.W.l. Reference 12/Sales (RE). Tender No. 285901, lator trade. — B.T.A., 246. Cavendish Road. London. should be quoted when applying for these forms. 2736 S.W.12. Tel.: Balham 6691/2. 6 8 E l e c t r i c a l R e v i e w O ctober 4, 1946

URDETTE & Co. Ltd. stock Reconditioned A.C. and LUORESCENT Lighting. ConEtead Units for sale. B D.C. Motors and Starters equal to new. Day and night F Dispenses with all starter gear and gives instantaneous service.—Stonhouse St., Clapham, S.W.4. Mac. 4555. 17 lighting, prevents maintenance worries, each unit guaran­ /CHOKES, suitable for 80-w. Fluorescent Tubes, teed. Apply—Scemco Ltd., 6/7, Soho Street, London, W.l ^ 220/230 v.. 50 c. Reputable manufacture, immediate (Tel. GER. 2034). 117 delivery.—Hardman & Co. Ltd., The Baum, Rochdale, LUORESCENT Lighting. Special offer, wholesalers Lancs. Telephone No. 4151. 2704 F only : Fittings without tubes. Minimum order. 12 of "/^ILEFA ” Hall Lanterns, Pendant Fittings and Wall each type; 20-gauge stove enamelled white, fitted Constead ^ Brackets; also Shade Makers, Gymbals, etc. Actual or ballast unit control gear. Industrial Trough Unit, £5 15s. manufacturers.—Central London Engineering (Fabrications) each nett; ditto, Built-in Flush to Ceiling Unit, £5 10s. Ltd., 120, Old Street, E.C.l (CLE. 2586). 108 each nett. Immediate delivery-—Scemco Ltd., 6/7, Soho .C. Motors, new, 200/230 volts, 1,400 r.p.m.; 8 to 314 Street, London, W.l (Tel. Ger. 2034). 120 D h.p., also 110 volts, D.C., 21 h.p., several available LUORESCENT Lighting in several designs-can be with starters.—Stewart Thomson & Sons (L’pool) Ltd., F supplied from stock to meet all requirements. Send Fort Road. Seaforth, Liverpool, 21 (Telephone Number, your enquiries to—John Phillips & Co. (Electrics), 31, Bootle 2697) or 28, Victoria Street, Westminster. London, Fortune Green Road, N.W.6 (Park 4772). 2540 S.W.l (Telephone Number. Abbey 2101). 96 TT'LUORESCENT Lighting: 18"-15 w.. 24"-25 w. and .C. 220-volt Automatic Contactors by Allen West, 36"-45 w. Fittings, complete with tubes. Colours: D tor operation with 4-h.p. and i-h.p. Motors.—T. White. Warm White, Daylight and Pink.—Scemco Ltd., Porter & Co. (Salford) Ltd., Weaste Works, Salford, 5. 6/7, Soho Street. London. W .l (Tel. GER. 2034). 118 9624 LUORESCENT Lighting Fittings. Extensive range, YNAMOS, 100 V., 15 kW, compound, ball bearings.— F including Trough and Flush type, fitted with “ All in D 15, Kingsley Grove, Audenshaw. Manchester. 2689 One ” “ Constead Unit.” Delivery 7 days, with tubes. Write—Scemco Ltd., 6/7, Soho Street, London. W.l. LECTRIC Arc Welder, also Douglas Automatic Coil- Phone. GER. 2034. 100 E Winder. Both used but in first-class condition. Call EORGE Cohen, Sons & Co. Ltd. for guaranteed Elec­ or write—Crosby & Co. Ltd.. Farnham. Surrey. 2813 G trical Plant. Motors, Generators, Switchgear, etc.— LECTRIC Convector Heaters. Home and Export Wood Lane. London, W .12 (Telephone, Shepherds Bush E markets supplied. Prompt deliveries from Weather- 2070) and Stanningley. near Leeds (Telephone. Pudsey head & Company (Glasgow) Limited, Electro-Engineering 2241). Established 1834. 27 Manufacturers and Distributors, 153, Oxford Street, Glasgow, C.5. 2612 EW ITTIC Rectifier and Transformer, input 6,300/3/50. H output 50 kW. 230/460, new 1940. Hackbridge Pole X^LECTRIC Fans (2), new. 36", heavy duty, 400 v., 3- Type Transformer, input 6,300/3/50, output 230/400, new phase. 50 cycles, totally enclosed motors, £26 10s. 1942. National Diesel Set, 50 kW, 800 r.p.m., 460 volts, each; also 5 oil-immersed Transformers, G.E.C., 230 v.- new 1934. Switchboard, 16-panel. D.C., by G.E.C., new 100 v.. .5 kVA, in new condition, £6 each.—Page & Miles 1932.—Borth & Ynyslas Electric Supply Co. Ltd., Borth, Ltd.. 60, Western Road, Brighton. B’ton 3221. 9678 Cardiganshire. 2641 T^LECTRIC Lamps, Flashlights, Flashlight Bulbs, Port- NSTALLATION Tester, 500 v. Record Minor, £11. able Fires, Accessories. Prompt delivery.—Suplex I From stock.—Robins Electrics, 222 & 222b, West End Lamps Ltd., 50, Gray’s Inn Road, London, W.C.l. Lane, N .W .6. 83 Holborn 0225. 116 UNCTION Electric Irons, superior design and quality, X^LECTRIC Motors, A.C. and D.C. We supply all types J supplied with suitable stand. Also JunctiQn Nickel- and sizes of electrical machinery. Slow speed reduc­ plated Torch Cases. Supplied for home trade and export. tion gears can be supplied to customers’ requirements with Distributors—Brooks & Bohm Ltd., 90, Victoria Street. short deliveries. Send your enquiries to—Be-Be Engineering, London, S.W.l. Tel. Vic. 9550. 49 3, Retreat Close, Kenton, Middx. (Wordsworth 4928). 42 LECTRIC Motors, 1/3 h.p., 3,000 r.p.m., D.C. 110 ADDERS, single and extension, from—Ramsay & Sons (Forfar) L td ., Fo rfar. 9004 E volts. Also 220 volts. Stock delivery, £6 each.— L John Steel, Clyde Mills, Bingley, Yorks. 84 ARGE number of Plating and Anodising Generators, "p'LECTRIC Motors and Dynamos. We hold one of the L up to 1,200 amps, for the most part unused. Send requirements to—Fyfe, Wilson & Co. Ltd., Bishop’s largest stocks of new and secondhand motors. Second­ hand machines are thoroughly overhauled. Inspection and Stortford. Tel. B.S. 1000/1. 2815 tests can be made at our works. For sale or hire. Send ARGE range of toasters, fans, portable and wall your enquiries to— Britannia Manufacturing Co. Ltd., L electric fires, radiators, convector heaters, floor 22-26, Britannia Walk, City Road, London, N .l (Phone. standard and table lamps, electric irons (heat controlled 5512-3 Clerkenwell). 13 and others), vacuum cleaners, hair dryers, novelty bowl LECTRIC Welding Plant, Engine and Electric, A.C. fires, boiling rings, electric kettles, immersion heaters. E driven, 300 amps, output, complete with weather­ (Radios very shortly available.) Large range of torch proof covers.—Box 34, c/o The Electrical Review. cases, cycle lamps and all types of lighting and H.T. batteries, etc. Detailed list and catalogues available. LECTRICAL Fittings. Ironclad Bells, 110 and 220 v. Place your orders in good time.—Brooks & Bohm Ltd., E D.C. Handlamps, Industrial Shades, Floodlights, etc., 90. Victoria Street, London, S.W .l. Phone, Victoria all new. Special prices quoted for quantities.—James 9550/1441. Inland Telegrams, “ Beebats, Sowest, McKenzie Ltd., Oxton Road, Birkenhead. 2790 London.” 66 X^LECTRICAL Testing Equipment. Offers invited for EAD-Covered Cable, 1/.044 single, var. cam. insulated. one 5-panel Test Board; one 5-kVA Transformer, L App. 4,000 yds., various lengths, not been used, 4d. 440-2,000 volts, for H.T. test; one 30-kVA Testing Trans­ yd.—Wilkes. Derby Rd., Stapleford, Nottingham. 8660 former; all for carrying out tests on domestic electrical cooking/heating appliances. Can be inspected at—Lane ESLIE Dixon & Co. for Dynamos, Motors, Switchgear, & Girvan, Bonnybridge, Scotland. 2745 L Chargers and Telephones.—214, Queenstown Road, Battersea, S.W.8. Telephone, MACaulay 2159. Nearest X^LLISON Circuit Breaker, 733 amp., T.P., I.C., 440 v., Rly. Sta.: Queen’s Road, Battersea (S.R.). 18 50 cycles. Serial No. 363087, complete with 200-ft. Ty/TICANITE Pieces, approximately 7,000. 9" x 3" x .010". cable; Ellison Circuit BTeaker, 300 amp., T.P., I.C., 440v., 50 cycles, Serial No. 372213; Ellison Oil Circuit Breaker, and 16,000 pieces, 3"x3"x.010". Samples on re­ 60 amp., D.P., Serial No. 367475; Secondhand Cable, 124 quest.—Box 2732, c/o The Electrical Review. yards (in two equal lengths), low tension 4-core, .4 .4 .4 1\/TONOMARK. Permanent London address. Letters re- .04 sq. in., impregnated paper insulated, lead covered, directed. 5s. p.a. Write—BM/M0N053, W.C.l. 68 compounded paper taped, compounded jute served, single IVfO TO R Generator Sets and Convertors, all sizes and wire armoured and compounded jute served cable with -i-’-*- voltages from i kW up to 500 kW in stock.— shaped conductors, 660 volts class. All lying at Dundee. Britannia Manufacturing Co. Ltd., 22/26, Britannia Walk. —Expanded Rubber Co. Ltd., 675, Mitcham Rd., Croydon, City Road, London, N.I. Telephone, Clerkenwell 5512, Surrey. 2672 55 13 & 55 14 . 28 LUORESCENT Chokes, 80 watt, wax filled, sileDt in 'V fAMEPLATES* Engraving, Diesinking, Stencils, Steel F operation. Prompt deliveries. — Micramatic Ltd., Punches.—Stilwell & Sons Ltd., 152, Far Gosford Meico Works. Congleton, Cheshire. 73 Street, Coventry. 14 LUORESCENT Lighting complete with P.F.C. tapped ■\TEW 18-c. Gold Chronographe Wrist Stop Watch, split F choke and tube, £6 15s.—Leon’s Electric, 90. Queen second timekeeper, calibrated 1 /1,000 sec. flyback, Victoria Street, E.C.4 (Phone, City 5879-1593). 9566 etc., etc. (cost 125 guineas), superb looks and perform­ LUORESCENT Fittings. Wholesalers can offer imme­ ance. guaranteed, £65; Eversharp (U.S.A.) 14-c. Gold F diate and regular deliveries of Super Quality 5' Trough Streamline Model Fountain Pen, £12 10s.; ditto Pencil. and Distributive Type Units, complete with all gear.— £8 10s.—B. W. Thomas, 40, Kensington Park Gardens, Box 2548, c/o The Electrical Review. London, W.ll. 8646 r

hLECTRICAL REVIEW 69

1 ict & N E,y ° r^ P ndha°d A-C-/D-P- Mot°rs caa be supplied NUSED D.C. Motors. Fifteen 21 h.p., 220 volt.; six Nina, and remir OTARY Converters in stock, all sizes; enquiries trical & Engineers’ Supply Co., 77, Minories, E.C.3. 2740 to 14k J-V invited. — Universal Electrical, 221, City Road. to 20 kW D.C. and A.C. Petrol & Diesel Generating i London. E.C.l. 16 5 Sets, some packed for shipment.—Box 87. c/o The 3d fciL OTARY Converters. 200-kW, 6.600/3/50 input. 230 22b, Isk R volts. 2-wire D.C. output, complete with Trans­ C-kW*C an d ^ k W , 230/250-volt D.C. Generating Sets. former and switchgear. seen running in Liverpool. 2.000- complete with 4-cylinder. 10-h.p. Austin Engines, kW, 6,600/3/50 input. 418/462 volts, three-wire D.C. with petrol tanks, radiators, fans and switchboards. Large Spirifi; output, complete with transformers, starting panels, D.C. JmcaaJa number available.—Britannia Manufacturing Co. Ltd.. machine panels. First-class condition. Two sets avail­ 22/26, Britannia Walk. London, N.I. 103 n d i i a d s ^ able.—Stewart Thomson & Sons (Liverpool) Ltd.. Fort Vktaa se 1 £7-kW portable Diesel-driven Generating Set. comprised Road. Seaforth. Liverpool, 21 (Bootle 2697); or 28, Vic­ of vertical 4-cylinder Dorman Diesel Engine, 1.000 toria Street, London, S.W.l (Abbey 2101). 72 usj e r.p.m., coupled to 15-kW Alternator, 400/3/50. complete -B IS ACKS and Bags in excellent condition for all com­ with Switchboard Radiator and all accessories (3 available). I S modities, as low as 4d. each. Write—John Braydon Full details—B.C.S. (Engineers & Contractors) Ltd.. SEgfeE Ltd., 230, Tottenham Court Road, W.l. Tel. No. Central Offices, Taffs Well, Cardiff. Tel. Taffs Well 296. rt Esi s Museum 6972. 79 2826 L t d , f c s SECONDHAND Barlow & Whitney Duplex Vacuum 0 4 -h.p. National Diesel Oil Engine. No. 84286, switch- ^ Plant. First-class condition, capacity of each tank " board; English Electric dynamo supplying 200 volts, it# aifi 17" dia. x 15" deep.—Hupfield Brothers Ltd., Dalston with 112 accumulators. Also 24-h.p. National Diesel Oil : - Gardens, Stanmore, Middx. 2728 Engine. No. 84287. switchboard; English Electric dynamo ifefi SSL: OHADED Pole Induction Motors, suitable for small fans, with 109 accumulators. Further particulars apply—R. E. SCT^JB ^ displays, etc., now being produced in quantity. Poole. 24, The Albany, Old Hall St.. Liverpool. 3. 2758 TO-T^Ti 'M Particulars from—Box 2830, c/o The Electrical Review. Q A -cw t. capacity Mono-Rail all-electric Overhead Crane. e mpdii Q PIRAL Elements for electric fires, boiling rings, and « J " 50-ft. lift, 400 volt. 3-phase. Slightly used, in ^ d - ^ other appliances, supplied to order.—Electrothermal perfect condition. Immediate sale. Inspection London. 1$c rat Engineering Ltd., 270, Neville Road, London. E.7. 54 Price £200 nett.— Macks Structures, Bank Buildings. s s Bceli SPIRALS, first quality. 500, 600, 750 and 1.000 watt. Walham Green, S.W.6 (Ful. 7233). 2729 ^ all voltages, for immediate delivery.—Box 59, c/o T'C-mfd. 470-volt working. R.M.S. 50-cycles Capacitor The Electrical Review. • & Condenser by British Insulated Cables, new and unused.—Filer, 17 Oaklands Rd.. Petersfield, Hants. 2769 toa.se SPIRALS. 230/50 volt, 1.000 watts. 106s.; 750 watts, ^ 80s.; 600 watts, 60s. per gross, carriage paid.—Box 9 ^ A kW Rotary Converters (2), with transformers and 9675. c/o The Electrical Review. ¿¡D\J switchgear. input 6,600 volts. 3-phase. 50 cycles, output 420/210 volts; also A.C. and D.C. Motors. Switch­ Q TAFF Time Checking and Job Costing Time Recorders TiOS, SfidP gear, Generating Sets. Welders, etc.—Midland Counties ^ (all makes) for quick cash sale. Exceptional con­ Electrical Engineering Co. Ltd.. Grice Street. Spon Lane. ezsihB dition. Write — Box 528, Smiths, 100, Fleet Street. F a » # West Bromwich. 36 London. E.C.4. 31 Q rv/Vton Upstroke Moulding Press, David Bridge k QTEAM Generating Plant. The following is a selection I 9£ i J \ J Co. Steel Steam Heated Platens. 8 ft. X 5 ft.. of sets available in our comprehensive stock : 2,000-kW 33" daylight. 6 rams. 2 ton working pressure. Seen B.T.H.Tnrbo-Alternator, 6.600/3/50,180/210-lbs. pressure, working. £6.000—Box 2805. c/o The Electrical Review. SI. complete with surface condenser and all auxiliaries, seen £rr\/"w-kVA Met.-Vick. outdoor type Transformer. i s running. 1.250-kW Brush Ljungstrom Turbo-Alternator. 2 inpUt voltage 22.000 or 11.000 volts, output ¡03.® 400/3/50. 200 lbs. pressure, complete with surface conden­ 6,000 volts, new 1931 (2 available); 100-kVA Westinghouse ra ll30.° ser and all auxiliaries, seen running. 750-kW Adamson/ indoor single-phase Transformer, input voltage 6.600. out­ Mather & Platt High-pressure Pass-out Turbo-Generator, put 400 volts, new 1921 (3 available). Full details— 200-lbs. initial steam pressure, passing out 25.000 lbs. per B.C.S. (Engineers & Contractors) Ltd., Central Offices. hour at 80-lbs. pressure, 500 volts, three-wire D.C.. with Taffs Well. Cardiff. Tel. Taffs Well 296. 2827 ¡¡atari* balancer, complete with surface condenser and all auxili­ aries. First-class condition. Full particulars from— good strong Crates, inside measurements 29" Stewart Thomson & Sons (Liverpool) Ltd.. Fort Road. jVJvFvJ x 9£" X 9|", £" thick, battened all round, '■sa «S at Is. 9d. each, ex works.—K. Goldser & Sons. 14a. Rec­ 2, ftf “®T Seaforth. Liverpool. 21 (Tele. No. B o o t l e 2697); or 28. Victoria Street, Westminster, London, S.W .l (Tele. No. tory Square. London, E .I (Tel. Stepney Green 2550). 75 Abbey 2 10 1). 98 4 A A A A A yards P.V.C. fabric-covered Sleeving, SU PERIO R Type Builders’ Ladders now in production: t:U UjU v/v/ grades E.F.C., sizes I . D . 75 mm. to ^ also Steps. Trestles and Extension Ladders. Phone — I 8 mm. Colours: Yellow, Red-black. Blue. Green. Offers Shaftesbury Ladders Ltd.. 453. Kathenne Road. E.i. wanted for part or whole parcel. Phone Southend-on-Sea J JJ*g I 49491 (extension 124) or write E. K. Cole Ltd. 2721 # p£ Grangewood 3363/4. a t » § 7 0 E l e c t r i c a l R e v i e w October 4, iv^o

ARTICLES WANTED WORK WANTED AND OFFERED CCUMULATOR Plates (old) and lead Peroxide; as LL makes and kinds of Electrical and Radio Measuring A actual smelters we pay top price. Also old storage A Instruments repaired by skilled technicians, A.I.D. batteries, transformers and whole installations purchased. approved. All work quoted by return without ch^ge. —Elton. Levy & Co. Ltd.. 18. St. Thomas Street. S.E.l. Also for sale, large variety of Voltmeters, Ammeters. Hop 2825-6. 39 Milli-ammeters. 2" and 2 \" dials, reconditioned ex-Air .C./D.C. Motors wanted urgently, all sizes and voltages. Ministry stock.—C. Gertler, Dept. A, 29-31, Cowcross St., A Best prices offered.—John Phillips & Co. (Electrics). E.C.l (Tel. Cle. 6783). , J ^ • 2670 31. Fortune Green Road. N.W.6 (Park 4772). 2539 RMATURE. Rotor, Stator Rewinds and Repairs, from .C. Generating Set, gas or petrol driven, 200 kVA. A fractional to 100 h.p. With the return of our old staff. A 4 0 0 /3/50 .— Box 2760a, c / o The Electrical Review. and extended premises we can offer prompt, reliable service. lte r n a to r. 250/300 kVA, 400/3/50, 375 r.p.m.— —T. A. Boxall & Co., Horley, Surrey (Phone 654). 2727 A Box 2760. c/o The Electrical Review. RM ATURE Winding : Vacuum Cleaners, etc., single or UENOS Aires. Important firm operating through A quantities.—Vac. 80. Cranbrook Road, Ilford. 9612 B London seeks offers of all manner of light electrical AKELITE and Plastic Mouldings. Thermostats. Re­ equipment.—Box 2829, c/o The Electrical Review. B frigerator Seals. We have now capacity to undertake work on any of the above. From customers’ own drawings, /CELLULOSE Acetate Offcuts urgently wanted. Send designs or moulds, or from designs by ourselves, to order. ^ samples and prices to—Box 107, c/o The Electrical All enquiries welcomed, trade only. Good deliveries, also Review . Heating Elem ents all types to order. W rite in the first LECTRIC Welder, input 400 V . D.C., output 120 amps, instance to— Box 2735, c/o The Electrical Review. E continuous rating. Must be in first-class condition, LECTRIC Motor Repairs. We specialise in the re­ with or without switchboard. Apply—Runbaken Elec­ E winding and repair of fractional h.p. motors, induc­ trical Products, 71, Oxford Road. Manchester. 1. 2556 tion. repulsion and capacitor for refrigerators, washing NGINEERING Technical Books (new or secondhand) machines, etc. Also D.C. Good deliveries at reasonable E wanted in any quantity. Attractive cash offers. Call prices.—The Johnson Engineering Company, 319, Ken- —Third floor, 356, Oxford Street, W .l, or “ Stoneleigh.” nington Road. London, S.E.ll. RELiance 1412/3. 89 St. George’s Avenue. Weybridge. 62 TT'LECTRICAL Engineers seek designs for production of LUORESCENT Lighting Tubes. 5 ft.. 80 watt., day­ small A.C. starters, 3-phase and single-phase, auto­ F light or warm white, large or small quantities. 35s. matic push-button type. Would also consider manufacture each. We collect and pay cash.—Box 111, c/o The Elec­ of any light electrical device that can be produced at trical Review. competitive prices. Write first instance—Box 2795, c/o fl/TOTOR-driven Alternating Set wanted, 400 volt, single- The Electrical Review. -IV1. phase input. 400 v.. 3-ph.. 75 amps, output.—F. J. T^NGINEERS, Precision. South England, seek manu- Edwards Ltd., 359-361. Euston Rd.,London, N.W .l. 2719 -*-4 facture of electrical, mechanical or domestic IL Engine Generating Set. A total of from 300 to assemblies or components. Press tools, gauges, small O 350 kWs of oil engine generating plant, new or stampings, capstan turning, also Internal and External secondhand, is required for use in a colliery in India. Grinding. Write— Box 74. c/o The Electrical Review. The plant should preferably be in two units of from 150 T IGHTING Fittings. Table Lamps. Bedlights, All Types to 175 kWs or even in three units of from 100 to 120 kWs. of Shades; home or export orders undertaken; shades generating 3-phase alternating current at 50 cycles and made to customers’ requirements. All goods are in the 415 volts. Offers of single units of these powers will be most exquisite and up-to-date designs and finishes. Shades considered. A full specification and description, together are hand-painted in various designs to suit all customers. with prices, may be sent to the undersigned as early as Send your inquiries to — Decorshade Ltd.. Bromford possible. The description should clearly state what cooling House. Bromford Lane, Erdington, Birmingham. Tel. No. and starting arrangements are supplied or required. In E rd . 1 5 1 6 . 2744 submitting offers the year of manufacture and approximate IVrACHINING Work, for Centre Lathes up to 6i in. amount and nature of service should be clearly stated.— centres and medium-sized milling (good grade work Merz and McLellan. Milburn. Esher. 2820 preferred).—The London Electric Firm. Croydon. Up­ ORTABLE Diesel or petrol-driven, direct coupled land 4871 5fi P Alternators, 230 v.. 50 cycles, single-phase, 5 kVA E W IN D IN G Specialist. F o r all types of electric to 8 kVA. complete, ready for use on trailers.—Gwalia R motors, stators, armatures, machine tools and vacuum Relay. Holton Road. Barry. Glam. 9626 cleaners. Guaranteed work. Any spares supplied and UANTITY 15-amp., 2 or 3-pin Switch Sockets, with fitted. Trade terms. Prompt service.—W. J. Rich. 85, Fp-erton P oad . Bristol. 7. 8657a Q or without tops, in new condition; also other installa­ tion accessories.—Box 2803, c/o The Electrical Review. EW INDS: 1/10 to 10 h.p., Armatures. Stators and R Rotors. All types of redesigning done. All work T> INQUIRED: Mica Electric Iron Elements; Toaster guaranteed. — Zephir Appliance Co., 89, Hoe Street. Elements; Spirals, nichrome wire; Cotton-covered Walthamstow. E.17. Lar. 6005. 9572 Flexes; Brass, Copper and Steel Sheets, min. size 9" x 6"; HOT Blasting. Metal and Paint Spraying. We are able Alu. Strip. S" x ; Machinery, new and used; Timber; S to undertake the effiicient and prompt handling of Glazing; Rubber Grommets: Asbestos; Switches: Iron all goods sent for treatment. Large capacity available Connectors, etc.. etc. Offers to—British Diamix Ltd.. Enquiries to—Commercial Structures Ltd., Staffa Works, Metrum Works, Beatty Street, N.W .l. Euston 5951. 44 Staffa Road. E.10. 112 TT'ERTICAL Compound Steam Engine, 120/160 lbs. * pressure, direct coupled to 220-kVA Alternator, 440 v.. AGENCIES 3-phase. 50 cycles.—Box 2562, c/o The Electrical Review. D VERTISER, experienced electrical trade, proceeding \ \ r ANTED. D.C. and A.C. ball-bearing Motors. Full A W est Indies, centring Barbados, spring 1947, desires * ’ details to—Britannia Manufacturing Co. Ltd.. 22/26. to contact firms wanting Representative, with view to Britannia Walk. London. N.I. 29 agencies.—Box 8637, c/o The Electrical Review. ANTED. No. 6 Fly Press, good condition.—Middlesex \ GENCIES required for London, South of England, for W Electron Co. Ltd.. 199, High Street, Hampton Hill. the following: (1) Domestic electrical appliances: Middlesex (Molesey 3541). 8639 (2) Brass electrical accessories, switch plugs, etc.: (3) Con­ ANTED. Resistance Welding Machine for joining 8" duit. Advertisers have clientele with every wholesaler in W diameter mild steel rod.—Fyfe, Wilson & Co. Ltd.. the territory mentioned. Immediate turnover can be Bishop's Stortford. 2817 guaranteed. Either commission or buying basis. Post­ \17'ANTED. Rotary Converters, any size.—Universal. war arrangements considered.—Box 64, c/o The Elec­ * ’ 221, City Road. London, E.C.l. 22 trical Review. T \7'E are immediate buyers for electrical machinery and GENCIES required. South of England, including the heavy power plant of all descriptions. Good prices A London area: (a) Cables; (b) Small Switchgear; (e) offered for A 1 plant.—G.P.U. Ltd.. Wembley. Middx. 2779 Transformers: or any lines suitable for distribution for -h.p.. 230-v. A.C. or D.C. Motor.—Universal Electrical. wholesalers’ business.— Box 40. c/o The Electrical Review. 1 221. City Road. London. E.C.l. 25 KTAS Turk Limited. Istanbul, Posta Cad. Valide Han to 3-h.p., 400-v.. 3-phase. Squirrel Cage Modern B.B. E 74/75. Turkey, have an experienced sales and en­ gineering staff, together with an established connection in I Motors. 1.000-1.500 r.p.m. $ to i-h.p., 230-v. D.C. the wholesale trade, desires agencies from Manufacturers Modern Motors, pref. comp, wound, approx. 1.500 r.p.m.. with a view to sole selling rights (either commission or —G.B., 44, BToxholm Road, London. S.E.27. 9684 buying) for the following: (1) Thermal and hydraulic p:-ft. Fluorescent Tubes, any quantity, new. retail prices, power plants. (2) Collieries and railway equipment. (3) carriage at our expense.— Box 8654, c/o The Electrical Heating, air-conditioning and refrigeration. (4) Electrical Review . accessories, switches, plugs, etc. (5) Conduit and fittings. "I fVh.p. Electric Motor, single-phase. 400 volts A.C., (6) Wires and cables. (7) Pneumatic transport equip­ 50 cycles.—Box 9673, c/o The Electrical Review. ment.—Box 2715, c/o The Electrical Review. October 4, 1946 E l e c t r i c a l R e v i e w 71

invited from interested parties wishing BUSINESSES FOR SALE AND WANTED Trurt p„SP„DOin e^raSwAgents for the Harbilt Electric well-known firm of Electrical Wholesalers, desirous of Sih iif w lrtl to—Harborough Construction Co. Ltd.. A extending their interests, wish to acquire controlling Harbrircmgh. Leics. 2739 interest in another firm of established Electrical Whole­ h i j u ? Engines. Manufacturers of engines and salers (London or Provinces). Existing personnel could adherent accessories not yet firmly represented abroad be retained. Absolute confidence guaranteed. Banker's. are offered the facilities of a comprehensive export organ­ Accountant's and Solicitor's references can be given.— isation controlled by one of the largest engineering trading Box 2703. c/o The Electrical Review. concerns in the country. Advertisers have own assembly shops, showrooms, shipping department, skilled staff and X^OR Sale, old-established Automobile Electrical Service City office. They are interested in representing only well- Station, exceptional opportunity for power and known makers of equal standing to their own. For further electric vehicle repairs.—Sheppard. 918, London Road. details write to—Box 2778. c/o The Electrical Review. Leigh-on-Sea. 2823 TN DUSTRIAL Enterprises (Whitehall 3678) have pleasure ADIO and Electrical Sales and Service. Newcastle, with in announcing that Mr. C. Seshachalam. M.A.. B.L.. R 2 branch shops in adjacent towns. Good living accom. of Messrs. Curzon & Co., Mount Road, Madras, has at one of the branches (2 beds., etc.). Turnover approx. appointed them sole representatives for all electrical, elec­ £7.000 p.a. Total rent and rates £360 p.a. (properties on tronic and mechanical engineering and business matters.— lease). Price for business, fixtures, fittings and equipment 17. Irving Street. Leicester Square. W.C.2. 2664 £3.500. plus S.A.V. approx. £3.000. The stock is good. ATANUFACTURERS. We can place your exports This is a good buy and it’s worth while to send for full immediately in South Africa and Rhodesia. All particulars.—Henry Stead & Partners Ltd.. 29, Cookridge particulars and samples to— Braemar South African Agen­ Street. Leeds. 2 (Phone 23342). 2777 cies. P.O. Box 2898. 87. London House. Loveday Street. Johannesburg. South Africa. 2666 BUSINESS OPPORTUNITIES ANUFACTURERS' Agents, covering the whole of M Great Britain and Colonies, are desirous of contact­ OCEMCO Ltd.. Fluorescent Lighting Specialists, wish to ing manufacturers with a view to sole selling rights (either contact manufacturers of electrical equipment and commission or buying), post-war arrangements considered. accessories, including “ Novelty ” and “ Improved ” —Box 23. c/o The Electrical Review. appliances. Domestic fluorescent fittings and components ANUFACTURERS' Agents, with offices London and of particular interest. When possible complete output will M South Coast, wish to hear of additional lines, includ­ be taken, and full co-operation given in exchange for sole ing Cables and Domestic Appliances, for sale to corpora­ distribution rights. Replies will be treated with strictest tions. wholesalers and retailers.—Box 9676. c/o The Elec­ confidence.—Man. Director. Scemco Ltd.. Scemco House. trical Review. 6/7, Soho Street. London. W.l. 119 ALES Manager for manufacturers of electrical instru­ S ments and components, with 17 years’ wide crnnmercial BUSINESS PREMISES experience and contacts in the North-West area, is opening USINESS Premises to Let. Accommodation suitable an office in Manchester as Manufacturers’ Agent. Manu­ B for offices, showrooms, light warehousing, etc.: facturers wishing representation are asked to write to— Oxford Street. W .l. basement approx. 5.000 square feet. Box 9621. c/o The Electrical Review. £2.000 p.a. exclusive. Knightsbridge, S.W .l, basement approx. 2.500 square feet. £650 p.a. exclusive. Apply— PATENT NOTICES Property Dept.. Upsons Ltd., 7/13, Great Dover Street. ATENT Agents.—A. E. Hill. Chartered Patent Agent. S.E.l (Tel. Hop 3551). 2761 P 27. Chancery Lane. London. W.C.2. Tele. Chancery 8444. 65 [Continued on page 7 2 .] /^IDENTIFICATION Over 5 0 0 0 / M “V /M DIFFERENT SWITCHES

MOUNTING AREA • Transparent or Coloured, in 72-yard NEVER EXCEEDS 4i"d . rolls, many widths.

Official Distributors : ^ ROTARY . - GORDON & GOTCH LTD. Dept. E.R.2, 75/79 Farringdon St. London, E.C.

SANTONSWITCHES

Rotary Switches up to 660v: 180a: 6 positions

SANTON Lf NEWPORT 14, Mon. 7S i i SELF-ADHESIVE CELLULOSE TAPE 9270 7 2 E l e c t r i c a l R e v i e w O ctober 4, 1946

PARTNERSHIPS ATEST A.M.I.E.E. Results. In the recent examina­ LECTRICAL Contractor with good contracts in hand L tions held by the Institution of Electrical Engineers 477 requires partner with capital for expansion, principals candidates sat who had taken B.I.E.T. courses. Of these only.—Box 9687, c/oThe Electrical Review. 457 were successful in passing the examinations. We believe ARTNERSHIP, salaried directorship or combination, this record of 457 successes out of 477 entrants has never P established wholesalers, U.K. or Eire, handling before been approached by any oral or correspondence E.L.M .A., C.M.A., E.L.F.A. all leading lines, would open tutorial organisation, and indicates the very high efficiency South for Northern firm.—Box 9688, c/o The Electrical of the modern system of technical training which we have R eview . laid down. The B.I.E.T. tutorial organisation is waiting MISCELLA AIEOUS to assist you either with a short specialist course or com­ A TTERY Chargers Modernised. Your old Charger made plete training for a recognised examination. We have B like new by specialists. Conversion from valve to metal available a large full-time staff of instructors, while the rectification. Send for interesting leaflet “ Q.D.” on this efficiency of our extensive organisation is a byword among service.—Runbaken Electrical Products, Manchester. 1. 45 engineers. We guarantee— “ No pass—no fee.” May we send a copy of “ Engineering Opportunities” ? Containing EDUCATIONAL NOTICES a great deal of useful advice and detailed information on NGINEERING Careers and Qualifications. Both over 200 home-study courses and examinations, this hand­ E Government and industry have announced and book is of very real value to the ambitious engineer. Our emphasised that young men with technical knowledge highly informative handbook will be sent free and without and qualifications must receive every chance of rising obligation on request.—British Institute of Engineering to the highest posts within their capacity in post­ Technology (established 1927—over 200,000 students), war engineering and allied industry. Write to-day for 12, Shakespeare House, 17, 18 & 19, Stratford Place, ” The Engineer’s Guide to Success ” —200 courses—free— Oxford Street, London. W.l. 33 which gives particulars of the first-class training supplied LASTICS offers particularly good prospects to experi­ by the T.I.G.B1. for the A.M.I.E.E., A.M.Inst.C.E., P enced Engineers with a sound knowledge of Plastics A.M.I.Mech.E., A.F.R.Ae.S., A.M.I.P.E.. B.Sc.iEng.). Technology. Authoritative home-study courses are now C. & G., etc., examinations in which T.I.G.B. home-study available in General Plastics and specialised branches of students have gained 44 first places and over 1.000 passes. the science. Full details of these courses and the prospects The Guide covers careers in all branches. Electrical. in the rapidly-expanding plastics industry will be found in Mechanical, Radio, Aeronautical, etc.—The Technological our handbook “ Opportunities in Plastics.” sent free on Institute of Great Britain, 35, Temple Bar House, London, request. British Institute of Plastics Technology (Dept. E .C .4. 77 301), 17, Stratford Place, London. W.l. 2811 AGRO ELECTRICAL Co. Ltd.

E lectric B ells

B ell Transform ers

B ell P ushes B akelite Lam pholders

C eiling B oses

•Junction B oxes . e t c . 7 MADDOX STREET, REGENT STREET, LONDON, Telephone : MAYfair 4068/9

The “ M00RH0USE” One-piece cable connector Manufactured by SPERRYN & CO. Moorsom Street, Birmingham Established over SO years

: Also Manufacturer., of- | General Electrical Accessories i O ctober 4 , 1946 E l e c t r i c a l R e v i e w

^ O f i. 4 * f y o t c C O s t l . $ £ £ u / J u f f f e y

ELECTRODE BOILERS

jo K .W . Boiler supplying steam lor three pressing machines. Electrode boilers are the cleanest and most con­ venient sources of heat available. They need no boiler house, no chimney, no fuel store. There is no difficulty with fuel supplies and where supply companies have favourable rates, “ B. & A. TEXOLEX TUBES IN LAMINATED boilers show great over-all economy. FABRIC OR PAPER BASE FOR STEAM SUPPLY FOR HEATING & HOT WATER

THE BUSHING CO. LTD. BASTIAN & ALLEN LTD., 11 BEDFORD SQUARE, W.C.1 h e b b u r n -o n -t y n e Northern Office: 62 Robertson Street, Glasgow, C.2

£ U Â ô £ it O r

4 - 0 Y e a J i A X

TILLING-STEVENS FABRICATED I H.P. (E.V.) MOTOR P ù x j d t i c PROV. PAT. (No. 6434/44) INCREASING DEMAND and the present man-power problem are respon­ sible for some delay in delivery of these efficient power units. But every endeavour is being made to speed up manufacture and our customers can be assured that prompt delivery will be resumed LITHOLITE INSULATORS & at the earliest possible moment. ST. ALBANS MOULDINGS LTD TILLING-STEVENS LIMITED WATFORD ELECTRICAL AND MECHANICAL ENGINEERS 'PHONE : WATFORD 4494 LONDON - MAIDSTONE - HUDDERSFIELD 7 4 E l e c t r i c a l R e v i e w O ctober 4 , 1946

A.C. or D.C. UNIVERSAL Success with a difficult job is a matter for wise FRACTIONAL H.P. MOTORS interpretation, intuitive judgment, accurate for every purpose foresight of the peculiar troubles involved and- Delivery of urgent priority orders as follows :—■ above all—the will to tackle the job even though 1/150th—130th h.p. 6-7 weeks it at first appears impossible. W e like to think 1/20th—1/8th h.p. 7-8 weeks 6-250 volts that we have all these qualities because tricky pressings are our particular form of enjoyment FRACTIONAL . . . may we help you I H.P. MOTORS Ltd.. Rookery Way HENDON. N.W.9 COLISDALE 8022-3 Hassell v Harper lid = REGENT PLACE, BIRMINGHAM,! R.P-734B CO NTACTU M SWITCHES, SWITCHPLUGS, SOCKETS, PLUGS CEILING SWITCHES, BELL PUSHES, ETC.

are in great demand, but still in short supply owing to the difficulty of obtaining certain raw materials

CONTACTUM LTD. Victoria Works, Edgware Road

GLA dstone 6366-7 CRICKLEWOOD, LONDON, N.W.2

SPOTLIGHTS - FLOODLIGHTS - DIMMERS STAGE BATTENS AND FOOTLIGHTS

THEATRE AND CINEMA EQUIPMENT f l i t k SPECIAL DISCOUNTS TO TRADE IS* Hr te D. WALTER & CO. LTD. Actual Manufacturers 61-63 LANT STREET, LONDON, S.E.I -Hi TELEPHONE: HOP 36SI % E l e c t r i c a l R e v i e w

“G R E S H A M” PRODUCTS

POWER TRANSFORMERS UP TO GMKSHAM 300 KVA H.T. RECTIFIER TRANSFORMERS SINGLE-PHASE AND THREE-PHASE RECTIFIER FILAMENT TRANS­ TRANSFORMERS FORMERS FOR H.V. . WORKING TESTING TRANSFORMERS UP TO 200.000 V O LTS FURNACE TRANSFORMERS UP TO L IM IT E D , makers of 10.000 AM PERES LOW VOLTAGE LIGHTING TRANSFORMERS POTENTIAL TRANSFORMERS reliable Transformers CURRENT TRANSFORMERS VARIABLE TRANSFORMERS VOLTAGE STABILISERS Head Office and W orks: AUDIO FREQUENCY TWICKENHAM RD., HANWORTH, MIDDLESEX TRANSFORMERS D.C. SMOOTHING CHOKES Phone FELtham 2271 D.C. SWINGING CHOKES also MANCHESTER, BIRMINGHAM, LEEDS, CHELMSFORD. A.C. CHOKES VARIABLE CHOKES,

" . . . and when you're in the market, just con­ ta ct me. I can prom ise pay yo u .”

Components and Assem­ blies in Drop Forgings. Hot Brass Stampings. Cold Stampings and Press- ELECTRIC WIRING w o r k . Springs and W irework. SYSTEM for FACTORIES Special Tools & W renches. OFFICES AND HOUSES Auto, Capstan and General Machine W ork. APPLICABLE TO ANT SYSTEM OF BUILDING Bolts, Nuts, Screws, W ashers, etc. saysf/ejS ie,,e Octopus ensures 1. Speedier and more efficient installation. 2. Considerable economy in labour & installatio Octopus has been officially approved by governing & authorities. W rite for illustrated brochure to im iTED PROVED AND PRODUCING PROPERTIES LIMIT , 5. Cheapside. London, E.C.2. or -PRINT OR PATTERN HARTLEY & COMPANY, 57, Victoria St., LondOT. S.W. . Sole Agents for Northern Ireland : IA M H S M_c S. & U Private Road, Cregagh, Belfast. _ 7 6 E lectrical Review O ctober 4 , 1946

HOLME PLATE EDGE PLANER CONTROL GEAR

EDWARD HOLME&(s (1931) L IM I T E D

Equipment fitted to Hugh Smith (Possil) Ltd., A LTRI N C H AM 30 ft Rack Type Plate Edge Planer, cutting at 30 ft and 60 ft per minute in both directions

22/26 STAFFORD PLACE —. 147 WEST REGENT ST. WESTMINSTER S.W.1 LjLAoVjVJW GLASGOW C.2 •Phone: Victoria 4383 'Phone: Douglat 6107

THE E-Z WIRE STRIPPER Can be supplied with any of the following standard sizes of Blades: No. I for 14*8 to 22*8 S W.G. 2 „ 12'* „ 19'* ,, „ 3 „ 10'« „ 13'* „

or equivalent overall diameters of Stranded W ire s .

Sole Distributors : BUCK & HICKMAN LTD. 2, 4, 6 &8 WHITECHAPEL RD. LONDON, E.l Advt. of J. B. Hyde & Co. Ltd. O ctober 4 , 1946 E l e c t r i c a l R e v i e w (Supplement) 7 7

ANNOUNCE AN ENTIRELY NEW RANGE OF MERCERY IN GLASS T HEllMOSTATS AND MERCURY SWITCHES

ILLUSTRATED CATALOGUE WILL BE SENT ON REQUEST

ENGEL & GIBBS LTD

983-5 FINCHLEY RD„ LONDON, N.W.11 Telephone : SPEEDWELL 9533

THE NEW GRAMPIAN MODEL 461 RECEIVER AMPLIFIER This new high-grade reproducer has been specially designed for use in Small Factories, Hotels, Clubs, Swimming Pools, Municipal Buildings, etc., where it is desired to broad­ cast Radio or Gramophone Records and provide amplification of speech by use of a Microphone. Let us send you further details. A dual wave-band superheterodyne with Power Ampli­ fier having an output of 15 watts. Provision is made for both pick-up and microphone inputs w ith separate SPECIAL DUTY volume controls and high and low impedence outputs. It Is of extremely robust construction In an attractively finished metal case. RECORD PLAYING DESK to yoi/T? Ttfoty/fifM f/vrs For above Garrard A.C. motor and pick-up in metal cabinet ■ Ths ELECTROPLANT C° List Price £11 I Is. Od. FAIRCE Of ENOIHEERINO WEMIItYHIODX M e n t i d / * Plus £2 6s. 4d. Purchase Tax «WE WILL GLADLY REDESIGN TOUR SURPLUS MACHINERY IF SUITAglE GRAMPIAN REPRODUCERS LTD. Hampton Road, HANWORTH, Middlesex Phone : Feltham 2657/8. G ram s : “ REAMP, Feltham

Scientific G .9 7 8 (S u p p lem en t) E l e c t r i c a l R e v i e w O ctober 4 , 1946

In d e x to A d v e r tis e r s PAGE Aerialite Ltd ...... 90 Agro Electrical Co. Ltd...... 72 Allen, Edgar, & Co. Ltd ...... 26 Allen, W. H., Sons & C o . L td ...... 91 A lto n B attery C o . L td ...... 43 Appelbe, J. F., & Co. Ltd ...... 90 Arrow Electric Switches Ltd ...... 30 Ashley Accessories Ltd ...... 30 Associated Pumps Ltd ...... 92 Austinlite Ltd ...... 88 Barbour, William, & Sons Ltd...... 97 Bastian & Allen Ltd ...... 73 Belling & Lee Ltd ...... 10 3 Benjamin Electric Ltd ...... 87 B.E.N. Patents Ltd ...... 80 Bill Switchgear Ltd ...... 3 Braithwaite & Co. Engineers Ltd ...... 10 2 Brentford Transformers Ltd ...... 45 Britannic Electric Cable & Construction Co. Ltd 93 B ritish E lectric T ran sform er C o . L td ...... 35 SPECIAL British Insulated Callender’s Cables Ltd ...... 9 RELAYS British Mica Co. Ltd ...... 96 British Thomson-Houston Co. Ltd ...... 5 ST A N D A RD Bruce Peebles & Co. Ltd ...... 2 Brush Electrical Engineering Co. Ltd ...... 10 RELAYS Bryce, W. Andrew, & Co. Ltd ...... 32 B u rco L td ...... 16 TIME DELAY Burdette & Co. Ltd ...... 56 RELAYS Bum, George, Ltd ...... B ushing C o . L td ...... 73 LIMIT SWITCHES Cable Strippers Ltd ...... 86 Consolidated Pneumatic Tool Co. Ltd...... 7 MERCURY SWITCH Contactum Ltd ...... 74 Copper Development Association ...... 4 CONTACTORS Crompton Parkinson Ltd ...... 46 & 98 Croydon Engineering Co. Ltd ...... 34 /LABORATORY APPARATUS Crypton Equipment Ltd ...... 49 Cryselco Ltd ...... C over ii ^ /CONTROL e q u i p m e n t t o Davis & Timmins Ltd ...... 104 'CUSTOMERS’ REQUIREMENTS Dennis, G. P., Ltd ...... 100 Designs & Installations Ltd ...... 10 2 Donovan Electrical Co. Ltd ...... 10 2 Drake & Gorham Wholesale Ltd ...... 8 D rayto n R egu lato r & Instrum ent C o . L td ...... 100 D uratu be & W ire L td ...... 104 Ebonestos Industries Ltd ...... 99 FLUORESCENT Edison Swan Cables Ltd ...... 85 Elcordia Ltd ...... 24 Electro Dynamic Construction Co. Ltd ...... 92 LIGHTING UNITS E lectro plan t C o ...... 77 COMPLETE WITH TUBES Ellison, George, Ltd ...... 52 Enfield Cables Ltd ...... 2 1 EARLY DELIVERY Engel & Gibbs Ltd ...... 77 Engineering & Lighting Equipment Co. Ltd ...... 31 Send for Trade List English Electric Co. Ltd ...... 15 Evans, F. W., Ltd ...... 104 Everett Edgcumbe & Co. Ltd ...... 54 E. W. Engineering Co. Ltd ...... 24 No 75 Ferranti Ltd ...... 1 1 & 89 Flather & Co. Ltd ...... 76 Fluorescent Spares ...... 96 Foster Transformers & Switchgear Ltd ...... 48 Fractional H.P. Motors Ltd ...... 74 Fuller Electrical & Manufacturing Co. Ltd ...... 47 No 75 --. Geipel, William, Ltd ...... 94 General Accessories Co. Ltd ...... 93 General Electric Co. Ltd ...... 17 & 58 (L- Godwin, H. J„ Ltd ...... 96 Gordon & Gotch Ltd ...... 7 1 Grampian Reproducers Ltd ...... 77 Gresham Transformers Ltd ...... 75 Hackbridge Electric Construction Co. Ltd ...... 50 No77 Halsey’s Electric Co. Ltd ...... 96 Harborough Rubber Co. Ltd ...... 34 Harland Engineering Co. Ltd ...... 6 H assett & H arp er L td ...... 74 Heatrae Ltd ...... 1 Hendrey Relays Ltd ...... 78 M O S S B R O S . Henley’s, W. T., Telegraph Works Co. Ltd ...... 18 & 53 Hick Hargreaves & Co. Ltd ...... 16 53 GOODGE STREET Higgs Motors Ltd ...... 13 TOTTENHAM COURT RD„ LONDON, W.l Holme, Edward, & Co. (1931) Ltd ...... 76 H yde, J. B ., & C o . L td ...... 76 Telephone : MUSeum 5385 (Continued on page 80) (Supplement) 79 October 4, 1946 E l e c t r i c a l R e v i e w

P u ttin g

TWO AND TWO

TOGETHER

Metal Sections Ltd. are specialists in

Sift the fabrication of all kinds of structures. With almost unlimited shapes to draw upon and long experience in solving manufacturing problems, Metal Sections Ltd. can give practical shape to your ideas and speed the work along.

M SlgM l HI® Manufacturers of cold rolled metal sections in steel and

light alloys, oldbury, Birmingham. Q)

W IRES & CABJ.1

INSTRUMENT WIRES * STRANDS & BRAIDS TELEPHONE & RADIO CORDS & CABLES RESISTANCE WIRES • P.V.C. TUBINGS

I P S. ELECTRICAL CO. L A L P E R T O N ' „ W i M . U V T ELEPHONI : PERI VALE 5bZi 80 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

Index to Advertisers (Continued from page 78) p age Igranic Electric Co. Ltd ...... 10 2 Insulators Ltd...... 83 lo c o L t d ...... | 32 Johnson & Phillips Ltd ...... 5 1 K la x o n L td ...... 81 Laurence, Scott & Electromotqrs Ltd ...... C over i Legg (Industries) Ltd C over iii Litholite Insulators & St. Albans Mouldings Ltd 73 Lo n d ex L td ...... 104 London Electric Wire Co. & Smiths Ltd ...... 38 London Transformer Products Ltd ...... 86 L.P.S. Electrical Co. Ltd ...... 79 Lundberg, A. P., & Sons Ltd ...... 20 Macrome Ltd ...... 28 Maul & Murphy Ltd ...... 94 McGeoch, William, & Co. Ltd ...... 90 McKechnie Bros. Ltd ...... 95 M .C.L. & Repetition Ltd ...... 1 Measurement Ltd ...... 57 Mercury Switch Mfg. Co. Ltd ...... 26 Metafiltration Co. Ltd ...... 82 ELIMINATORS Metal Sections Ltd ...... 79 •Metropolitan-Vickers Electrical Co. Ltd ...... 25 & 44 Metway Electrical Industries Ltd ...... 28 “ Equiflex ” Mount­ Micanite & Insulators Co. Ltd ...... 36 ings are invaluable Midland Electric Mfg. Co. Ltd ...... 27 for the mounting and suspension of machines, equipment, Monmer Foundry Ltd ...... 100 instruments, electrical apparatus, motors, etc., and M o rgan , A lb ert, & C o ...... 82 wherever elimination of vibration and shock is required. M oss B ro s ...... 78 SPECIAL FEATURES Mycalex Co. Ltd ...... 10 1 Flexible in all directions at an equal deflection. Can be loaded on any side, thus eliminating vibration in Vertical, Nalder Bros. & Thompson Ltd ...... 29 Horizontal and Longitudinal planes employing best quality National Savings Committee...... 30 natural rubber spring elements and complete with snubbing Parmiter, Hope & Sugden Ltd ...... 81 device. Special Fittings made to suit customers’ requirements. A lso available as previously advertised, the A L L -M E T A L construction Philips Lamps Ltd C over iv comprising an ingenious Damped Spring System. Pitman, Sir Isaac, & Sons Ltd ...... 22 W rite fo r Brochure and send us P oles L td ...... 92 details of your requirements. Proved & Producing Properties Ltd ...... 75 A . W E L L S & CO. LTD. (Dept. F) Pye L td ...... 34 Pyrotenax Ltd ...... 10 3 STIRLING ROAD. WALTHAMSTOW, LONDON, E.I7. Phone: Larkswood 2691 Ray Engineering Co. Ltd ...... 26 Redfern Stevens Ltd ...... 75 Renfrew Foundries Ltd ...... 95 R e v o E lectric C o . L td ...... 40 Reyrolle, A., & Co. Ltd ...... 33 ifcK No.2 1 R o b in so n , L io n el, & C o . L t d ...... 94 Ross Courtney & Co. Ltd ...... 1 SPRAY PAINT \ Ruberoid Co. Ltd ...... 22 Runbaken Electrical Products...... 104 COMBINATION Santon L td ...... 7 1 Scholes, George H., & C o . L td ...... 10 0 Schori Metallising Process Ltd ...... 20 Comprises essential equip­ Scott, A. C., & Co. Ltd ...... 97 ment for continuous spray Siemens Electric Lamps & Supplies Ltd ...... 45 painting, Including Spray Simmonds & Stokes Ltd ...... 3 Gun, Pressure Paint Con­ S k e fk o B all B earin g C o . L td ...... 41 tainer,Hose and connections. S o u n d ...... 94 Sp erryn & C o ...... 72 W rite for Catalogue C.B.36. Spicers Ltd ...... C overiii B.E.N. PATENTS LTD. Standard Telephones & Cables Ltd ...... 23 Steatite & Porcelain Products Ltd ...... 84 HIGH WYCOMBE, BUCKS Stokes Appliances Ltd ...... 88 Symonds, R. H., Ltd ...... 28 Taylor Tunnicliff & Co. Ltd ...... 12 Terry, Herbert, & Sons Ltd ...... 19 Thompson, W. & J. R., (Woodturners) Ltd ...... 34 Thorn Electrical Industries Ltd ...... 39 Tilling-Stevens Ltd ...... 73 LET (ftl h \ l l II I I HELP Toolmakers & Design (Coventry) Ltd ...... 92 Tudor Accumulator Co. Ltd ...... 99 WESTOOl Veritys Ltd ...... 55 WITH YOUR POST-WAR PROBLEMS ON ALL Viscose Development Co. Ltd ...... 42 Walsall Conduits Ltd ...... 14 Electro-Mechanical Apparatus Walter, D., & Co. Ltd ...... 74 Ward & Goldstone Ltd ...... 10 1 Wells, A., & Co. Ltd ...... 80 Solenoids and Electro-Magnets Westinghouse Brake & Signal Co. Ltd ...... 37 Westminster Engineering Co. Ltd ...... 1 FOR TECHNICAL ADVICE, WRITE Westool Ltd ...... 80 WESTOOL Ltd. Wheeler, F. H., Wholesale Ltd ...... 82 Telephone : Wilcox, Edward, & Co. Ltd ...... 22 ST. HELENS AUCKLAND f, Woden Transformer Co. Ltd ...... 88 BISHOP AOCKLAND >- WEST AUCKLAND Wright & Weaire Ltd ...... 86 Co. DURHAM 317 uciooer ą, iv4ö ELECTRICAL REVIEW {Supplement) 81

a p e x

^ v h o p c 's patents*«*

High breaking capacity fusegear. Ironclad distribution boards. Fuse-switches and isolating switches. House service cut-outs. Unit type switchboards, ^etc.

PARMITER, HOPE & SUGDEN LTD. Longsight, Manchester 12. London : 34 Victoria Street, S.W . I

ELECTRICJ

PRODUCTS ;

Synchronous 82 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

A M onum ent to

E f f i c i e n c y

In a single passage through the Metafilter, transformer and heavily carbonized switch oils can be completely freed from all suspended impurities; and all traces of sludge and moisture removed—a monumental tribute to the efficiency of the Metafilter. The Metafilter is economical and easy to operate; and can be used on switches and transformers while under load.

( Jjfrta fiftm tio ri ,

THE M ETAFILTRATION COMPANY LTD. BELGRAVE ROAD - HOUNSLOW - MIDDLESEX Telephone - - Hounslow 1 1 2 1 /2 /3 Telegrams - - Metafilter, Hounslow

HOIST BLOCKS M ULTIPLY YOUR MAN POWER Better Product—Lower Cost—Versatility

Overload Cut-off, Load Indicator and Recording Devices available. Ball bearings throughout, Gears running in oil, Electric brake, Overwind cut-off, Quiet running, Light in weight, Pull Cord, Thumb Switch, Push Button or Remote Control, Push Geared or Electric Travelling, adjustable to any girder flange. All Insulate Current Conveying Systems, Minimum Maintenance—Maximum Reliability.

W rite for fuller particulars F. H. A LBERT MORGAN & CO. WHEELER Wholesale LTD. 50 W ILK IN STREET, N.W.5 LONDON: 230 Vauxhall Bridge Road, S.W .I. VIC 1915 MANCHESTER: Regal Buildings, Oxford Rd. Central 8202 TELEPHONE : G U L. 1147 October 4, 1946 E l e c t r i c a l R e v i e w (Supplement) 83

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

E October 4, 1946 84 (Supplement) E l e c t r i c a l R e v i e w

M ETALLISED CERAM ICS

f o r herm etic seals

and soldered assem blies

FREQUENTITE BUSHES

l 'S«m I yr IIN D »AC* HTAUJUO' i L r *

■Y

1 1 6 4mm 1 1 1

AS♦Jmm —

R . 50728 R. 50764

PORCELAIN BUSHES Details of standard sizes will be sent

on apphcation. INO »AC! METALLISED'

For full information and prices please write to : STEATITE AND PORCELAIN PRODUCTS LIMITED Stourport-on-Severn W orci. Telephone : Stourport 111 Telegrams : Steatain Stourport © S.P.40a %

October 4, 1946 Electrical Review ( Supplement) 85

C.M.A. Regd. Trade-Mark Nos. 422219-20-21

F October 4, 1946 86 (Supplement) E l e c t r i c a l R e v i e w

WHEN PLANNING MOULDING PRODUCTION . HAVE

Vufs6 e p * tc s * tt

UNDER YOUR OWN CONTROL

The small electrically-heated LABPRESS makes It unnecessary to send unproved designs to the plastic moulders. By experiment you can determine the correct powder; you can develop your products under yo u r ow n roof, and pass the final prototyp e to the moulders safe in the knowledge that success is assured. It definitely w ill save you time and expense besides providing you with short runs of 200 or 300 impressions from mild steel moulds made in your model shop. Learn more about the uses of the LABPRESS .. . send to-day for full details and specification.

READ HOW THE LABPRESS WILL SAVE YOU TIME & EXPENSE ROAD, TOTTENHAM, LONDON, N.I7 WRIGHT & WEAIRE LTD., 740 HIGH Factories: London and South Shields Telephone : TOTtenham 3847-8-9______

A Vest Pocket CABLE STRIPPER L.T.P. Pat. No. 571-461 Now fitted with Robust Cutter FOR for all types of BRAIDED, P.V.C., COPPER TRANSFORMERS SCREENED, POLYTHENE, LEAD AND STANNOS CHOKES, MERCURY CABLES Diameters up to 7/044 v.i.r. equivalent ; ARC RECTIFIERS no damage to Copper Cores Lateral or Transverse Cutting Write for latest Technical Brochure Adjustable Depth of Cut, Clean and A ccu ra te to For Production Lines, Electricians, LONDON TRANSFORMER Wiremen and Cable Operatives PRODUCTS LTD.

COBBCLD ESTATE, WILLESDEN Write for Brochure : LONDON, N.W.I0 CABLE STRIPPERS Lm W il 6486 LEIGHTON HOUSE, POTTERS BAR, MIDDX. October 4, 1946 E l e c t r i c a l R e v i e w (Supplement) 87

but for good seeing—indoors and out—you need

BENJAM IN LIGHTING

Just as the reliability of radar can easily be proved, so, in the field of ordinary seeing, the efficiency of BENJAMIN Lighting is clearly demonstrated. When you ask your local Benjamin Engineer for assistance on lighting problems, you enjoy the fruits of the long and constant study that Benjamin have given to every aspect and development of industrial lighting. 88 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

There’s not ,, fL£M €NT o f dofubt ..

^ , Electrical App».««. >1.°"'“ « ¿ - p S that Haeujacturers ° „„in a h .| h «P"“ non ¡, jeopafdool-

K e ' ‘ Er, „ reputation behind . ve a great name and a 8 Qf spedal designs

S . s t ^ w^ reasons’ wi" serve

”'renh“ ceUth?"'P"“ tlOT' ^ (h

we¡s always cannot.yetfu$tuPre the future to think of.

Telephone : Croydon 2218-9 STOKES APPLIANCES LTD CROYDON «SURREY

A new, heavy- duty switch of robust construc­ tion suitable for

multi-circuit opera­ At present in production are two types of fluorescent tions and capable of giving chokes, types “ U ” and “ S ” for use w ith 80 w att lamps. Typ e “ U ” is 3$* X 3 J" X 4 \ " and is for external use or with a long and trouble-free life* Can industrial type troughs. Type “ S ” is 2 ” x Y x Y and is intended for incorporation in very shallow troughs—as be built up into I, 2, 3» 4 or 5 cell units providing small as 2 n deep. a large range of contact combinations. Send for Type “ U ” has an external tapping block giving tappings of l90/260v. Type “ S ” is at present made for one voltage folder giving full only. Both chokes are made of first class materials, vacuum impregnated and compound filled. They are particulars. completely silent in operation, and conform with the usual high standard of W O D EN Workmanship. p /> o o u c r Further details gladly sent on request. MADE BY AUSTINLITE LTD. (PROPRIETORS: CHANGE BROTHERS LTD.) WODEN TRANSFORMER COMPANY, LTD. LIGHTHOUSE WORKS, SMETHWICK, BIRMINGHAM MOXLEY ROAD, BILSTON, STAFFS. Tel.: Bilston 41959 October 4, 1946 E l e c t r i c a l R e v i e w (Supplement) 89

FOR YOUR NEW TRANSFORMER

FERRANTI LTD., Hollinwood, Lancs. L o n d o n O f f i c e : Kern House, Kingsway W .C .2. O ctober 4 , 1946 9 0 (Supplement) E l e c t r i c a l R e v i e w

No. K.5. 3/5 Amperes. 2-pin Cast Brass Watertight Socket and Plug. (For Low Voltage and Marine use.) Also Makers of Switch and Fuse Gear, Lighting Fittings, etc.

for 200 to 500 watt lamps E.S. Caps at 20' 0' from ground. 7' 0' WILLIAM closed. 16'6'extended. Weight 5i lb. Cycle clips and Extension Tubing supplied. Used by the leading corporations and electric McGE0 CH&C° LTD light companies throughout the World. Warwick Works Prices and particulars on request. Carriage paid In Great Britain. BIRMINGHAM 10 J. F. APPELBE & CO. LTD. also n , r I Wl GREAT UNION STREET, HULL Glasgow, C.2, and London, W .l Telephones: 33522,31212 & 872s O ctober 4, 1946 Electrical Review i C N

T H E plant illustrated is installed in the Essendon Pumping Station of the Barnet District Gas and W a te r Company, and comprises an Allen combined two-stage borehole pump and a five-stage force pump, driven through bevel speed increasing gears by an Allen 4-cylmder engine, having a 12-hour rating of 200 b.h.p. at 300 r.p.m. Owinu to shortage of staff to carry out normal maintenance, this engine completed a 50 W E N O N - S T O P R U N from 24th February, 1945, to the 10th February, 1946, and was at work again^ffer a short interval for decarbonising and the usual routine Inspection, which revealed negligible wear and no necessity for replacements. We are indebted to the Directors of the Barnet District Gas and Water Company for permission to use this information. _

L M SONS #■ C M 2 £ J f i H . ENGLAND BEDFORD a 92 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

High Frequency Induction Motor Alternator

W R IT E FOR « 0 CATALOGUE E.R./IIO

A\t()U1 >S ' HIGH TENSION are not enough! POLES TYBURN RÇ ERDINGTON. P o l e s L™ BIRMINGHAM. 24. To give a clear idea of our recent developments in electrical plant we would have to send you fully illustrated TOOLMAKERS & DESIGN and comprehensive brochures on the Brays Lane (C O V .) LTD . subject—and this we will be delighted to d o ! C O V EN T R Y Telephone 4051-2 The exacting requirements of active Invite Enquiries for service have provided ample scope for JIGS, TOOLS, FIXTURES & MOULDS our research departments and special­ FOR THE ELECTRICAL INDUSTRY ised problems for our designers. The AND THE PLASTICS TRADE resultant increased experience and Highest Accuracy efficiency of E.D.C.C. is now at your and Finish Guaranteed disposal and if we can assist you with your power problems . . . but we have said: eighty words are not really enough . . . ASSOCIATED PUMPS ELECTRO DYNAMIC LTD. ALL PURPOSES DOMESTIC & CONSTRUCTION C? LT” INDUSTRIAL

S ! MARY CRAY, KENT 73-77 Britannia Rd. AND AT BRIDGWATER, SOMERSET, ENGLAND. Fulham LONDON. S.W.6 October 4, 1946 E l e c t r i c a l R e v i e w (Supplem ent) 93

Q CLIX “ Flexipin” plugs ensure the highest attainable contact efficiency, the shortest wiring-up time, effective cord- gripping, and easy insertion into and withdrawal from socket-outlets. The range covers 2, 5, and I5A. 2- and 3-pin B.S.

# This ISA . 3-pin, B . S . 5 4 6 , switc h socket-outlet for flush mounting is designed to meet actual service con­ ditions, i.e., foot- 0 The C L IX Flanged Flush operation, yet at fitting Socket-outlets with competitive price. open or shuttered sockets. Also available in ver­ The range covers 2, 5 and tical pattern. IS amps. 2 and 3 pin B.S. supplied with or without iron box.

BBITANNIC CABLES ® AN INDEPENDENT COMPANY, MAKERS OF E.H.T. AND L.T.

PAPER MAINS CABLES, VARNISHED CAMBRIC C.T.S. MINING

TRAILING, “ IVERITE ” INSULATED CABLES AND THERMO­

PLASTIC CABLES (P.V.C.) FOR 250 VOLT LIGHTING CIRCUITS

FOR BUILDINGS OF ALL TYPES.

BRITANNIC ELECTRIC CABLE AND CONSTRUCTION CO. LTD. IVER, BUCKS. T i . Telegrams : lVeER 4 9 l' “ BRITANNIC, IVER.” O ctober 4, 1946 9 4 {Supplement) E l e c t r i c a l R e v i e w

r \

r ,

Lionel Robinson & Co. Ltd. 3 Staple Inn London, W.C. I Telephone - - HOLborn 6322

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIHIIIIIIIIII M a u i cC Mwtphy Jßtd. RADIANT INSULATING MATERIALS ELECTRIC EBONITE Sheets, Rods and Tubes B E D WARMERS LAMINATED BAKELITE SHEETS Supplies now available Apply to your local Wholesaler Cut Pieces and Turnings a Speciality WHOLESALERS’ ENQUIRIES SHOULD BE MADE T0- 3 INGLEWOOD ROAD, LONDON, N.W.6 SOUND, 483-489 Barlow Moor Rd, Manchester 21 Telephone: HAMpstead 3938 ■Phone : CHOrlton 2294b C/ERI

Telegrams: “ Patella, Sedist, London ” Telephone: Hop 0594 (4 lines) CABLE V.I.R., BRAIDED, LEAD COVERED & TOUGH RUBBER SHEATHED

UIIIIIAM fiEIDFI I Til Head Office : 156-170 Bermondsey Street, LONDON, S.E.1 IVILLIJIPI UEIrCL LIU. Cab|e Works: WEMBLEY, MIDDLESEX October 4, 1946 E l e c t r i c a l R e v i e w (Supplement) 95

CREATIVE CONSTRUCTION IN LIGHT METAL CASTINGS

s o l v e s many production p r o b l e m s

There are distinct advantages in the use of hot brass stampings compared with rough sand castings. Sometimes machining is elimi­ nated entirely by the employ­ ment of McKechnie stamped parts. How would YOU This may be a reason why 66 the other people ” sometimes seem to be producing quicker, cheaper m a k e i t ! and even better than you had thought possible. This adjustable chain beam for a double- ended tenoner is more than 14 ft. long and, even in lightweight aluminium alloy, weighs 364 lb. An aluminium alloy casting M C K e c h n ie was chosen for this job because it reduced BROS. LTD. the cost of the finished part, and because ROTTON P A R K ST., BIRMINGHAM, 16 the guaranteed soundness and high shock resistance of aluminium alloy castings ’ Phone : Edgbaslon 3581 (7 lines) ensure a long, trouble-free life. Branches : London — 62, Brook Street, W .l. ’Phone: Mayfair 6182/3/4. Leeds Aluminium costs less than ever before, and is available in — Prudential Buildings, Park Row. unlimited quantities to the Electrical Industry. Renfrew 'Phone: Le,eds 23044. M anchester — Foundries Ltd. will be pleased to co-operate in redesigning 509-513, Com Exchange Buildings, 4. components as aluminium alloy castings. ’Phone: Blackfriars 5094. Newcastle- on-Tyne—90, Pilgrim Street. ’Phone: Newcastle 22718. RENFREW UNDRIES LTD HILLINGTON • GLASGOW • SW2 96 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

ELECTRIC C° LTI FOR EVERYTHING ELECTRICAL B.V.A. RADIO VALVES E.L.M.A. LAMPS C.M.A. CABLES

10 LOWER GROSVENOR PLACE VICTORIA, LONDON, S.W.I TELEPHONE : VICTORIA 5762-7

COMMUTATOR SECTIONS AND PUMPS SHAPED INSULATORS

FOR WELLS &. BRITISH MICA C° LT° • BEDFORO BOREHOLES OF EVERY DEPTH

T Y P E E.O .E. for Wells and Borehole* FLUORESCENT STARTER exceeding 25 fc. In depth. Totally enclosed •elf-oiling mechanism of Patented design. Precision workmanship throughout. Pump SWITCHES can be supplied complete with 1 h.p. Electric Motor or with fast and loose pulleys for belt drive. Capacities from SB gallons per hour. (Thermal Type). Individually tested EARLY DELIVERY Also BEM O 80 watt chokes, condensers, etc. FLUORESCENT SPARES Dept. ER/A, 53 Goodge St., London, W .l O ctober 4 , 1946 E l e c t r i c a l R e v i e w (Supplement) 9 7

F O R L A C I N G SWITCHBOARD CABLES

i ) a r b o u r s

f t a x f a c i n g Tkm acf

also BINDING LINEN THREAD No. 30. 3 cord Beeswaxed to P.O. Specification, on 2-oz. cops.

WM. B A R B O U R & 8 0 N S LTD . L I8 B U R N N. IR E L A N D there's wires and wires Some can do a deal of damage too. As far as Resistance Wires are concerned, there are no snags with Cromaloy. Users the world over, put their faith in

ELECTRICAL RESISTANCE WIRES

. c. SC dm 1618 98 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

YOU CAN REST SECURE

WITH

( r o m p t o n

W.Do03. CRBLE

ROMPTON PARKINSON LIMITED, ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W.C.2 elephone : TEMdle Bar ¡911 Teherams : Cr0mpark- E s tr° nd’ ^ October 4, 1946 E l e c t r i c a l R e v i e w (Supplement) 99

W e cannot mould battleships But we have battled with and overcome many moulding problems. As specialists with over 46 years’ experience of work to the highest standard of quality and precision limits, you can therefore be assured that IF IT IS MOULDABLE EBONESTOS CAN MOULD IT

EBONESTOS INDUSTRIES LTD., Excelsior Works, Rollins Street, London, S.E.I5 T e le p h o n e : N e w C ro s s 1913 (6 lin e s )

It is noteworthy where Tudor ac­ whether they were installed only yes­ cumulators are to be found fulfilling terday, or over thirty years ago as the most important duties. Over 500 many of them were—they are to-day British Power Stations installed functioning with consistent efficiency.

Tudor. Many Tudor installations SAFETYLYTE , . is the Tudor Emergency Lighting rank among the largest in the land S y s te m , which is automatic and in­ stantaneous in operation. It is i nstal- and have an enviable reputation for led in thousands of schools, hospitals, long-lived reliability. No matter factories and other large buildings

T h e T u d o r Accum ulator C o. L td . 50 Grosvenor Gardens, accumulators London, S.W .I. S L O a n e 0168/9

W T 38b/44 100 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

l 1 M I T E FLEM ING ROAD. SPEKE LIVERPOOL, 19 Phone : H u n t’s Cross 1217/8

Telephone : VICTORIA 5957/8

i r o n — for speedy and | economical production •

Send us your enquiries M ONM ER FO U N D R Y LTD. ST. ANNES ROAD, WILLENHALL, STAFFS

ELECTRICAL V SMALL GEARED PRODUCTS fo r ,M0 T0 R UNITS STRENGTH (1) UNIDIRECTIONAL Final Shaft Speed: Max. 280 R.P.M. 60 min. per rev. ht/y/ex must he qood’ TORQUE 37 lbs. in. max. (2) REVERSING GEORGE H. SCHOLES Final Shaft Speed: Max. 600 R.P.M. 27 min. per rev. & C O . LT D . TORQUE 60 lbs. in. max. Wylex Works, Wythenshawe DRAYTON REGULATORS INSTRUMENT MANCHESTER CO.LTD.,WEST DRAYTON,MIDDLESEX October 4, 1946 E l e c t r i c a l R e v i e w (Supplem ent) 101

Illustrated are a few of the many types of Connectors m anufactured by us fo r use w ith PORTABLE APPLIANCES W e specialise in complete flexible assemblies. Let us quote for your requirements

WARD&G0 LDST0 NE Ltd. Pendleton, Manchester. 6 ACCURACY

W e doubt whether the champ, could repeat this feat at will, but you can always rely upon undeviating accuracy in every batch of insulating components machined or moulded from M YCALEX.

Power Factor (at I Tensile Strength mc/sec. and o ver) .002 (Ib./sq. in.) ...... 5,800 Permittivity ...... 6.7 Water Absorption NIL Di-E!ectric Strength (volts/mil.) ...... 550 Plastic Yield .....450°C

Phone Cirencester 400 or send enquiries to MYCALEX CO. LTD., ASHCROFT RD., CIRENCESTER, Glos. M Y 1 1 October 4, 1946 102 {Supplement) E l e c t r i c a l R e v i e w C o n tac to r T y p e St a r t e r s For A .C S e r v ic e

IGRANIC ELECTRIC CO. LTD. specialise in the manufacture of Contactor Type Starters for all types of Electric Motors for all classes of Service. Equip your electrically driven machine with the correct control gear to protect your motor and machine by specifying IGRANIC.

Illustration shows type 1080 Combined Stator and Rotor Starter.

IGRANIC ELECTRIC C9LTP BEDFORD ô LONDON

^ D O N O V A N n n i i t i i i i i jl I T T ^EARTHING CLIPS WITH ' SPECIAL BITE AND GRIP i j i RRU l l Hii IITHWA 1 IIVIHI Mr1 L INTO TUBE OR ARMOURING ( ■ « f Note the tongue which Pressed Steel ensures perfect and /MtkW permanent ^ contact. T a n k s cannot turn. All sizes from half to two inches. BRAITHWAITE & CO. ENGINEERS, LTD. THE London Office (Temporary Address): , DONOVAN ELECTRICAL CO. , 45 King’s House. Haymarket, London, S.W.I Telephone : W Hl 3993 Telegrams : Bromkirk-Phone

DO YOU WANT HELP WITH YOUR DRAWING OFFICE WORK? DESIGN and Development of Electrical and Mechanical Equipment, DRAWINGS and GENERAL DRAWING OFFICE WORK produced from rough sketches, basic information, to your requirements. Wide experience of Manufacturers’ Drawing Office systems, special provision made to ensure close co-operation. You can get the assistance of an efficient DRAW ING OFFICE by writing to or telephoning— DESIGNS & INSTALLATIONS LTD. 167 HIGH STREET, GUILDFORD, SURREY. Telephone: Guildford 3919 October 4, 1946 E lectrical Review (Supplem ent) 103

CONDENSATION, OIL, MOISTURE FUMES AND F IR E “ infinity ” megger reading, now and many years hence—that, in brief, is what you are assured in a “ Pyrotenax” wired system. The cable itself, due to its copper sheathing, is impervious to moisture, water, oil and fumes; and requires no conduit. Being of solid con­ struction it is entirely unaffected by internal condensation. And very important, thanks to its mineral insulant, is inherently fire-resisting. These outstanding qualities are safeguarded throughout the whole system by means of the special “ Pyrotenax” seals at terminal points and junctions. Illustrated is a typical termina­ Applications tion, a Gland Seal, which in addition to pro­ Power Pack to amplifier viding a joint which is in effect a homogeneous Amplifier to microphone whole, also forms a mechanically sound entry Amplifier to loudspeaker and anchorage for the cable. Amplifier to record player There is a comprehensive range of Termination H/T and L/T inter-chassis connection Accessories for every purpose. These access­ Anywhere, when mains output and other ories are simply adapted to all standard fittings connections have to be carried in a multi­ and appliances. core lead Calculating machine connections “ Pyrotenax ” Cables which comply with I.E.E. regula­ ★ tions, are supplied with single or multiple cores in a Fluorescent lighting fittings wide range of current ratings. Ballast to Trough unit connections Specification (¿fctjLigídÍH Q & PcU > €t S-Pin Flex plug with cord grip— 2 mains Pins —up to 5 amps, Bakelite body and cover— non-reversible—self locating LIST N O . L. 1258 Price each 3/5 5-way Chassis socket— high grade bakelite wafer panels LIST N O . L3 3 I Price each 1/4 Plugs and sockets have silver plated and tin PYROTENAX LTD., HEBBURN, Co. DURHAM dipped soldering spigots Telephone : Hebbürn 32244 5 Delivery from Stock LONDON OFFICE: 7 Victoria Street. S.W .f Telephone : ABBey 1654 BIRMINGHAM OFFICE : 2 Moor Street, Birmingham 4 BELLING fr LEE LTD Telephone : Midland 1265 CAMBRIDGE ARTERIAL RO AD . ENHEID. MIDDX G .D .I6 104 (Supplem ent) E l e c t r i c a l R e v i e w October 4, 1946

SCREWS • TERMINALS • PRESSWORK

HEW DUAL TESTOSCOPE BAKELITE----- MOULDINGS AND Ideal for High and ------ERINOID Low Voltage t o a n y TURNINGS Testing ; 1/30 SPECIFICATION 100/850 A.C. and D.C. Allowance made on old models. Send for FREDERICK W. EVANS LTD. interesting leaflet (Q 4) on Electrical and PLASTIC WORKS Radio Testing, from all Dealers or direct. LONG ACRE, BIRMINGHAM 7 RUNBAKENMANCHES TER I TELEPHONE EASl 118« & 1187 LONDEX- PHOTO-ELECTRIC . EQUIPMENT m m i proof OIL COUNTS, HOH - NON- CONTROLS. mAMMABLE : AOEIKO PROTECTS.

L 0 N D E X • L T D DURATU8E & WIRE LTD.. FELTHAM. MIDDLESEX MANUFACTURERS OF RELAYS ASSftLKE»Y 207-ANERIEY ROAD- L0NDQNS-E 20 ,

politechniki iii October 4, 1946 E l e c t r i c a l R e v i e w

THE LIGHTWEIGHT INSULATOR

An ideal material that can be specified with confidence

for any job requiring an insulator combining mechanical

strength with high dielectrical properties.

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

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

19 N E W BRIDGE STREET, LO N D O N , E.C.4. CEN TRAL 4211 Ext. IV O ctober 4, 1946

WHAT IS INSIDE ?

W h a t ’s inside a Philips Lamp?

The answer is: “ Over half a century’s experience” . The

fruit of this experience is a lamp that gives a maximum of

clear, bright light for a minimum of current. "PHILIPS

— the Lamps the Public like ^Makers of Good Lamps for over 50 Years

PHILIPS LAMPS LIMITED, CENTURY HOUSE, SHAFTESBURY AVENUE, W .C .2. (16 1)

Printed in Great Britain at THE CHAPEL R i v e r PRESS, Andover, H ants, and published by ELECTRICAL R e v ie w , L i m it e d , at Dorset House, Stamford Street, London, S.L.l.