Electrical iievtew, September 21st, 1945 PUBLIC LIGHTING CONFERENCE

Vol. CXXXVII. No. 3539 SEPTEMBER 21, 1945 9d. WEEKLY

ARRESTING NEWSPAPER ADVERTISING • sundftv » ; Hiroshima. * i Nations Charter.

# Reproduction of one of the series in National and Provincial newspapers and weekly and monthly publications. The publicity campaign also includes posters, railway and arterial road signs. u E l e c t r i c a l R e v ie w September 21, 1945

THERE HE STANDS—symbol of authority in an orderly World — controlling — directing — obeyed because absolutely trustworthy and reliable. W hat a fitting comparison with BIRCH RESISTANCES, Arms of the Ohm's Law. Backed by many years of practical experience in which their reliability has been tested under all conditions, BIRCH RESISTANCES, in their various applications, stand up to their job and can always be depended upon to provide specified service because of their first-class workmanship.

Please call upon us to help you solve any Resis t a n c e Resistances ^ ****** May we quote you for of •ny of the following :— DIMMERS — REGU LA TO RS (Field, Shunt, Voltage) — RESISTANCES (Arc Lamp, Chargin», Regulating, Sliding) — RHEOSTATS — ELEM EN TS and SPIRALS. ______ASBESTOS WOVEN RESISTANCE NETS AND GRIDS

H. A. BIRCH & CO. LTD., Wilohm Works, Wood Street, WILLENHALL, STAFFS. Telegrams : "WIL o h m ” Willenhall. Telephone : Wlllenhall 494-49S Septem ber 21, 1945 E l e c t r ic a l R e v ie w 1 the value o fmem ideas

Many years ago, a Mr. Dunlop conceived the idea fM o n el of a pneumatic tyre to eliminate the many bumps of solid-tyred cycles. To-day — all the world “ rides on air’’ thanks to Mr. Dunlop’s pioneer idea. * * *

More recently, Heatrae decided—after lengthy ex­ periment—that Monel was the ideal metal for Electric Water Heater Construc­ tion. Another example of a " Pioneer idea ’’ which must ultimately influence Water Heater design and vastly simplify Main­ tenance. leaders in ele chic waler healers

HEATRAE LTD., NORWICH P H O N E : N O R W IC H 25131 GRAMS : HEATREA, NORWICH

Sole Manufacturers of “ WESTMINSTER ” ARC LAMPS THE “FACILE” For TERMINAL Photography Send for Prices and and List of all Medical kinds of Term inals purposes ROSS COURTNEY &l t C d ° ' M A K E R S O F — ASHBROOK ROAD, LONDON, N. I» Electric Welding Machines and Patent Scaling Machines. Spot, Seam and Butt Welders. ''W estm inster’* Carbon Brush H o ld e r s . “ Partridge ” Earthing Devices and Pressure Detectors. OPERATING Dynamos, Motors, Alternators and Transformers Rewound and Re-constructed CLUTCHES

Telephone: Elgar 7372 (2 lines) Telegrams: “ Regency, Phone, London ” The WESTMINSTER ENGINEERING CO. LTD. M C I and REPETITION LTD. VICTORIA ROAD, WILLESDEN JUNCTION Pool L o n « , L a n ^ U ij , B irm in g h a m . LONDON, N.W.IO A 2 E l e c t r ic a l R e v ie w S ep tem b er 2 1 , 1 9 4 5

Ensign Lamps conform in all respects to rigid B S I. specifications. In other words, they are superlatively good lamps— as good as lamps can b e; there's none better

Yet they offer definite price advantages

Well worth while enquiring from your Wholesaler or direct before

London (North): Clay Hill. Bushey, Watford. Herts. Birmingham 1: 40 & 42 Summer Row London (South): 10,Kingston Hill, Kingston-on Thames. Leeds 1 : W ellington Street. Glasgow C2 : 42 York Street. Surrey. Cardiff - 50 Bridge Street. Manchester 4; 20 Swan Street. Septem ber 21, 1945 E l e c t r ic a l R e v ie w 3

Birmingham, Bristol, Dundee, Glasgow, London, Manchester, Nottingham, Peterborough, Sheffield, Wolverhampton. E l e c t r i c a l R e v ie w Septem ber 21, 1945

No. 366. FLAT SPRING No. 352. BEVELLED No. 554. ROUND. PLAIN ENDS. ALL WHIT SIZES. HARDENED AND TEMPERED DOMED.

No. 1131. FLANGE WASHERS. No. 159. No. 421. No. 367. SQUARE SECTION. LARGE 2j. I" HOLE. GROVER TYPE. HEAVY DOUBLE SMALL if. f/' HOLE.

No. 512. No. 1302. No. 54. FLAT SPRING No. 554 D. B. S. F. LIGHT DOUBLE TIPPED ENDS ALL SIZES. HARDENED AND COIL. TEMPERED.

nK andof every plain type s,ee. and . . in round, square, section, etc. etc. TERR/S , us know y°ur . We can nil

cperien«e are J L r washers that 1 nt We can make WRINGS u s'to special shape f FAMOUS > our research depart- FOR SPRINGS Sole M a kers : S t T S at your dispos'd. & PRESSWORK HERBERT TERRY & SONS LTD., REDDITCH Send for war-time SINCE c a t a l o g u e LONDON MANCHESTER BIRMINGHAM V 18 S S > v ie * * * ' September 21, 1945 E l e c t r i c a l R e v ie w 5

B A SWITCHGEAR OIL-BREAK • AIR-BREAK • AIR-BLAST T-W DUPLICATE BUSBAR (Compound Filled).

2 BREAKER PLUGGED ’ TO REAR BUSBARS

Incorporating Drop-traverse-raise Vertical-plugging Oil Circuit-Breaker UP TO 11 kV., 250 MVA. • •

BREAKER PLUGGED TO FRONT BUSBARS FULLY TESTED FOR SHORT-CIRCUIT DUTY

BTH WILLESDEN THE BRITISH THOMSON HOUSTON COMPANY LIMITED. WILLESDEN. ENGLAND A 3564 6 E l e c t r i c a l R e v ie w Septem ber 21, 1945

@YANISING MEANS BETTER GALVANIZING

During the War years we have been frequently called upon to provide Wire and Wire Rope which would stand up to conditions without precedent. We realised, in advance, that our products would, of necessity, receive the harshest possible treatment and, that they must not fail. BRyanising survived all tests. War with its exacting demands has proved beyond all doubt that BRyanising does satisfy the claims made for it. BRyanising means better Galvanizing, for it provides the strongest possible resistance to corrosion.

BRITISH ROPES l i m i t e d

HEAD OFFICE DONCASTER / ^ B 5 \ MANUFACTURERS OF OFFICES WORKS AND STORES w m R 0 P [ . W/R£

THROUGHOUT GREAT BRITAIN HEMP CORDAGE * CANVAS September 21, 1945 E l e c t r ic a l R e v ie w

HIGH TENSION IGNITION CABLES are installed in this mighty “ Bristol” 2,000 h.p. aero - engine

BRITISH INSULATED CALLENDER’S CABLES LIMITED

MAIN WORKS: ERITH • HELSBY LEIGH PRESCOT 8 E l e c t r i c a l R e v i e w Septem ber 2 1 , 1 9 4 5 * Announcing Cl ass Seal T e r m in a ls Process Patent applied for .

After rather more difficulties than w e expected, we have developed a method o f SCALE and FUR production in our factory at Enfield, where o n we are able to turn out many thousands per week . . . NO TV. KETTLES Terminals at present available are illustrated about actual size ; other sizes will follow. WATER-HEATERS They withstand instantaneous and repeated ETC. therm al shocks of a t least 250°C and will support at least 40 lbs. per square inch air removed harmlessly pressure without leakage. These terminals are in a short period supplied tin-plated to permit soldering with SIM PLY AD D modern resin cored solders or solder pastes. “Fur-offit” Supplied packed in cartons containing 100. to the hot water in the utensil and the mixture does the rest

QUANTITIES OF APPLIANCES CAN BE TREATED IN A BATH . . OF TH E LIQ U ID . . 750 V. DC. W orking at 40,000 feet. SAVE FUEL 1,500 V. DC. W o rk in g at sea level. by using scalefree utensils

Send P.O. for I 6 for sample bottle Including postage and packing DRAKE & GORHAM WHOLESALE LTD. List N o. 577. 77 LONG ACRE, LONDON, W.C.2 1,500 V. DC. W o rk in g at 40,000 feet. Telephone : TEMple Bar 3993 3,000 V. DC. W o rk in g at sea level. MANCHESTER-29 Piccadilly. BRIGHTON—24 Marlborough Place. G L A S G O W — 182 St. V in c e n t S tree t. BRISTOL— 2 & 4 Church Street, Temple. DUBLIN—2 Church Lane, College Green. BELLING C LEE LTD Midland Representative : CAMBRIDGE ARTERIAL ROAD, ENFIELD, MIDDX W . T. BOWER, 184 Jockey Road, Sutton Coldfield September 21, 1945 E l e c t r i c a l R e v ie w 9

An earth rod which reaches for results Embodying the known virtues of, the earth rod electrode—ease and low cost of in­ stallation—here is a new type of rod with a wider field of application. Because it is Extensible it çan be driven, in 4 ft. lengths, to great depths to take advantage of deep strata of low resistivity — inaccessible economically by other means. When sunk below ground level and fitted with an “ Easy-Access ” Inspection Cover, the bonding and conductor are protected from mechanical damage and undesirable sur­ face potential gradients are minimised. B.I. Technical Advisory Service will gladly advise on specific applications for the

COPPER EARTH PTC

BRITISH INSULATED CALLENDER’S CABLES LTD. PRESCOT, LANCS. PRESCOT 6571 10 E l e c t r i c a l R e v ie w Septem ber 21, 1945

C 0 M (N$ MONBV? 7e e ( ( f e e f

44 Us has been coining money since we was little daddlers. Many’s the arf-a-bar ivot s com e fro m our honest toil, and our brother Jasper can make a fiver look better than real. But us has got the finest way o f mak­ ing money now. TUe sell Ekco Lamps. There’s coining money fo r y e r.”

There’s excellent profits and prestige in selling Ekco Lamps. Get full details about them and the extra discount they bring ! We will send particulars, too, of Plastalux Light Fittings and the new simplified discount system. VFrite at once to E . K . Cole Ltd., Lighting Division, Ekco Works, Southend-on-Sea. September 21, 1945 E l e c t r ic a l R e v ie w 11

SUL

cox'*'\*s w"* Eft E i l i l i FERRANTI FERRANTI LIMITED HOLLINWOOD LANCS 12 E l e c t r i c a l R e v ie w Septem ber 21, 1945 EMPIRE RUBBER

Wherever military opera­ m i tions are conducted, there unseen and unnoticed in the equipment of man and s f machine are Empire Rubber Products, protecting men against shock and discom­ fort, and machines against vibration, wear and the elements.

EMPIRE RUBBER CO. SGrams: SPANDIT. » DUNSTABLE a Septem ber 21, 1945 E l e c t r i c a l R e v ie w 13

P o s t -W a r H o u s i n g I nstallations

SWITCHES

AND fgg ELECTRICAL ^ACCESSORIES \ J

I 1 \ 7 A S, \ ff TtrCKEM M \ \ i \ I 9 ■’' i":"v' :frs' '¡MI \ N \ A PRICE L I S T .^ J â Ê

Tested under arduous Service conditions the Tucker Titan 5 amp. Q.M.B. small base switches, shockproof Lampholders and Moulded Ceiling Roses form an ideal range of installation accessories for trouble-free Domestic circuits. Full details are given in Price List, Ref. G.44 .

|. H. TI1CKIR& (0. LTD.. Binai Rd., Tyseley, Birmingham II

Makers of First Grade Electrical Accessories for over 50 Years 14 E l e c t r i c a l R e v ie w S ep tem b er 2 1 , 1 9 4 5

A Routine Test ol BAKELITE LAMINATED

IT IS THE NORMAL PRACTICE FOR gram the various hole shapes, positions Bakelite Limited to test thoroughly its and clearances, which represent every products before supplying them as the reasonable condition that is likely to be raw materials of industry. encountered. This test has been in Above is a piece of Bakelite Laminated constant use since long before the war which has been subjected to the routine and provides valuable information on punching test. all punching materials. This test is made with a punching tool Samples and data of special punching scientifically evolved and standardized grades for a variety of purposes will be for the purpose. Examine in the dia­ furnished upon request.

BAKELITE PLASTICS REGD. TRADE MARKS.

Pioneers in the Plastics World

BAKELITE LIMITED • 18 GR.ÖSVENOR GARDENS ■ LONDON S.W.1 September 21, 1945 E l e c t r ic a l R e v ie w

ALLEN WATERWORKS PUMPING PLANT

TH E photograph reproduced shows the Force Pump House at the Cosford Pumping Station of the Wolver­ hampton Corporation. Two motor-driven force pumps are installed, each designed to deliver a range of quantity of from 2*0 to 4*0 m.g.p.d. from a mixed water sump into the pipeline from Cosford to Tettenhall against pressure heads ranging from 285 feet above the top water level of the sump for the lower rate of dis­ charge, up to 400 feet above this level at the maximum rate of pumping.

Each force pump is a three-stage double-suction pump arranged horizontally with a 14-in. suction branch anc£ 12-in. discharge branch. The casing is split on the horizontal centre line so that the cover may be removed for inspection and/or withdrawal of working parts without breaking pipe joints. The use of double suction im ­ pellers eliminates heavy end thrust and simplifies the bearing arrangements.

Each pump is driven by a 455-h.p. B.T.H. slipring type induction motor, w ithdirect coupled Scherbius regulator for giving the required speed variation of from 1,120 to 1,410 r.p.m.

The average guaranteed energy consumption for the river water pumps and well pumps (illustrated in previous issues), and the force pumps, is 1.140 K.V.A. per W.H.P. over a considerable range of duty. This guarantee includes losses in the transformer, cables and switchgear, and was fulfilled at official tests. 16 E l e c t r i c a l R e v i e w Septem ber 21, 194;

When you’re talking about year after year. Many years’ motors, it’s well worth remem­ experience has been welded bering that little spots of into their production—so that bother like this CAN be quite today a Harland Motor is a rare. guarantee of efficiency, reli­ We are very proud of the his­ ability and economy in oper­ tory of our motors and gener­ ation. Details of our ranges ators working in all parts of are given below—may we send the world with unfailing service you descriptive matter ?

Standard A.C. and D.C. Motors from io to 2,000 H.P., rib-cooled •and core-cooled Motors up to 1,500 H.P., Two-pole Machines in all enclosures—direct coupled drive. Alternators — engine-driven or geared steam turbine, plain and auto-synchronous Motors of all speeds, Motor-Generator Sets, Wide Speed Range shunt-controlled D.C. Motors, Submersible Motors.

THE HARLAND ENGINEERING CO. LTD.. ALLOA.SCOTLAND

fflkttujüfacluAjzAi o if anol fyjofaau/cc c/inety September 21, 1945 E l e c t r ic a l R e v ie w 17

READY TO SERVE . . .

In many of Britain’s great docks, J. & P. Plug Boxes are helping to load and unload, repair and re-victual—like these tandem pillars installed by the Clyde Navigation Trust. J. & P. too, are ready to serve ... on any Plug Pillar problems. JOHNSON & PHILLIPS LTD., CHARLTON, LONDON, S.E.7

B 18 S eptem ber 2L 1945 E l e c t r ic a l R e v ie w

Rowlands Electrical Accessories Ltd., R.E.A.L. Works, Birmingham 18 Septem ber 21, 1945 a i i sei for the next test

Proving Crompton Switchgear

New types of Crompton Switchgear are developed and tested for rating in the Crompton Short Circuit Testing Station—one of the recognised stations of the Association of Short Circuit Testing Authorities.

The experience which is incorporated in the design of Crompton Switchgear, coupled with A.S.T.A. Certificates of rating, are your guarantee of its safety in operation. E l e c t r i c a l R e v ie w September 21,

S E L E N I U M

RECTIFIERS

W HEN we were the only manufacturers of Selenium Rectifiers in this country there was no need to give a special name to our product.

The many advantages of the “ Standard ” Selenium Rectifier over other types has inevitably introduced competition, and we have therefore adopted the name of “ SenTerCel ” as our trade mark, so that our customers may know that rectifiers bearing this name will have the high standard of performance to which they have become accustomed.

The name “ SenTerCel ” combines the idea of centre-contact construc­ tion, which is an exclusive feature of our rectifiers, with the S.T.C. registered trade mark which is known all over the world as the symbol of the highest quality in tele-communication equipment.

Standard Telephones and Cables Lim ited NEW SOUTHCATE, LONDON,N.II Septem ber 21, 1945 E l e c t r ic a l R e v ie w 21

PLANNED S treet Lighting

Fittings Proved in Service

Eleco’s 40 years’ experience is at your disposal and a com­ plete range of Fittings proved in service for Tungsten, Mer­ cury and Sodium Discharge Lamps will be available. Catalogue on request.

ENGINEERING & LIGHTING EQUIPMENT GO. LTD DEPT. W.S., SPHERE WORKS, ST. ALBANS, HERTS. 2 2 E l e c t r i c a l R e v ie w Septem ber 21, 1945

METALCLAD AIR INSULATED SWITCHGEAR

VERTICAL ISOLATION PATTERN Photograph shows an installation consisting of a 10-panel V.A.5 metah clad air insulated switchboard. RATINGS 250 M V A . 6-6kV. A S T A C ertificate No. 707 250 M V A . 11 0 kV. „ „ „ 7 0 9 150 MVA. 6-6 kV. 150 MVA. 110 kV. ICO M V A . 3-3 kV. Send your enquiries to

LOUGHBOROUGH ENGLAND BRANCHES : London. Birmingham. Cardiff. Bath. Manchester. Leeds.'Newcastle. Glasgow. Belfast. Dublin 2 3 September 21, 1945 E l e c t r i c a l R e v ie w

Hr. 24 E l e c t r i c a l R e v ie w September 21. 1945 WHAT ARE YOUR LAMPS

i O S H W Y O U ?■ There is the difference! All along the line Atlas Lamps show you a clear saving! Every Atlas Lamp is checked and tested at every stage of manufacture. Guaranteed to come up to the highest possible standard of efficiency'. That is why Atlas Lamps last! A still further saving is the extra discounts you get. To keep your standard of lighting high but your yearly light­ ing: bills low—instal Atlas Lamps. W rite today for terms

W HY NOT USE THIS SERVICE? i ou do not need telling how important right lighting is for factory and office. But perhaps you Mill allow our Lighting Engineers to tell you how to get the best results for your par­ ticular premises. Send a line, and thev M ill riSit you. ATLAS LAMPS N othing b etter h n t teene to tig h t

THOR* ELECTRIC«. IWWSTR1E5 LTD-. ICS-109 |udd Sc. Loodc«. W .CI P o « *: E^ to . II&3 Northern Branch : 55 Bcl-ester Phone Centra* 7^ , M -E. Depot * 6 S andbM , Ne.castte-o«>-T,»e. I. Phone N e-sstie lA jjg September 21, 1945 E l e c t r ic a l R e v ie w 25

REYROLLE EQUIPMENT IS PROTECTING BUSBARS AND BUSBAR-ZONES STABLY AND EFFECTIVELY THE WORLD OVER

REYROLLE HEBBURN- ON- TVNE ENGLAND E l e c t r i c a l R e v ie w Septem ber 21 1945 September 2 1 ,1 9 4 5 E l e c t r ic a l R e v ie w 27

LIGHTING FOR INDUSTRY

Many years ago Holophane Labora­ tories first began work on light distribution for industry. Recently all that work has been revised and recast in the light of the accumulated experience with the result that today’s Holophane Industrial Glassware pro­ vides both high output efficiency and accurately controlled 1 ight distribution. Holophane Engineers can draft you a correctly planned, efficient lighting installation for your own plant. Ask for your local Holophane man to call. Septem ber 2 1 , 1 9 4 5 2 8 E l e c t r i c a l R e v ie w

M© “Risk

OF DAMAGE OK FARE

T H E distinctive characteristic of “ Pyrotenax ” M.I. Cables is the fact] that they are made wholly and solely of copper and mineral insulant. Oil, water, condensation— Have you noticed that slight reflex action of nothing will affect them. They can be knocked about, trampled on and crushed without the large hands of certain big clocks? This being any the worse for such treatment. is due to the engaging and disengaging of Above all they are inherently fire-resisting and the escapement causing “recoil.” Honest unaffected by accidental overload. Bend them George G raham ’s invention in 1715, the as you will to any shape; they can be held snugly in position by any form of clip, amazingly simple dead beat escapement, saddle or clamping device. They do not practically eliminated this fault, proving so require conduit or any other form of pro­ efficient that it is used for high class clocks tection ; and, once installed, they are virtually to this day. He improved, too, the time­ everlasting—efficient, economical and safe. keeping of clocks by introducing mercury FIRE RESISTANT * UNAFFECTED into the pendulum bob; when heat caused

BY OIL, WATER, CONDENSATION, the pendulum to lengthen and slow the clock down, the mercury expanded and rose ACCIDENTAL OVERLOAD OR GROSS in its tube, so counteracting this effect. ILL-USAGE * EASY TO INSTAL*

jUitfhlimfXpcut I

PLUG IN TO GREENWICH TIM E

Ji& td m ^kjocuioii PYROTENAX LTD., HEBBURN, Co. DURHAM Jrm ęAeM yiM in ¿ W w M Telephone : Hebburn 32244/5 LONDON OFFICE : 7 Victoria Street, S.W .I Telephone : ABBey 1654 / A . 1 , f 4 '¿ ¿ r n w n d BIRMINGHAM OFFICE : 2 Moor Street, Birmingham 4 Telephone : Midland 1265

G .D .I8 Scientific O&N SB Septem ber 21, 1945 Electrical Review 29 >s

A remarkable new type Freedom from pinholes. ★of Insulated W ire. Excellent ageing properties. Extreme toughness and High resistance to solvents resistance to mechanical a n d ac id s. d a m a g e . Non-hygroscopic. Perfect flexibility. High space factor.

High dielectric strength.

CONNOLLYS (BLACKLEY) L1MITED • M A NCHESTER • 9

)6HS> Septem ber 21, 1945 30 E l e c t r ic a l R e v ie w

66 le t w a y ”

MEANS CHINA CONNECTORS 5 and

1 15 amp.

The 50-range Model 7 Universal AvoMeter. 1, 2 and l g « ^ The AvoMeter is one of a useful range of 3-way “ Avo ” electrical testing instruments which Send for List are maintaining the “ Avo” reputation for 1 ü n § I No. NC 30 E.R. an unexcelled standard of accuracy and dependability—in fact, a standard by which other instruments are judged- Ask for details of all Metway Porcelain and China Products

Sole Proprietors and Manufacturers : 1METWAY * C 1 TT M 1 INDUSTRIESELECTRIC- LTD. ' AUTOMATIC COIL WlNDER & ELECTRICAL (F o rm erly Metropolitan Electric Supplies) EQUIPM ENT CO. LTD.,W inder House,Douglas KING STREET, BRIGHTON, I Street, London, S.W .I. Phone : Victoria 3404-8 Phone: Brighton 4456PBX. Grams:" Metway. ’ ’ Phone, Brighton

ILLUSTRATION SHOWS MODEL C.W. REVOLUTION COUNTER FOR COIL-W INDING MACHINES, MAXIMUM SPEED 6,000 REVS. PER MIN.

o u n t e r s b n € M O D E L C .W , \ m il boring' M achines Ltd. 38 BARRETT’S GROVE . LONDON . N.I6 SEND FOR FULL LIST OF COUNTERS

MULTIFLOW FEED HEATERS effect definite economies in power station operation by increasing boiler efficiency and decreasing fuel consump­ tion. Most effective use is made of latent heat in exhaust or bled steam. Weir Feed Heaters are made in standard sizes and capacities, single or multi-stage. Write for booklet N o. 124 “ Weir Multiflow Feed Heaters.”

TD CATHCART G. & J. WEIR L GLASGOW Septem ber 21, 1945 E l e c t r ic a l R e v ie w 31

CRVSELCO • LIMITED • BEDFORD 32 E lectrical Review S eptem ber 2 1 , 1 9 4 5

LONG-LIFE WINDINGS Coils are wound with Lewmex wire, the plastic vering of which is so that it will with­ stand bending of the wire to a small radius without cracking and remains un­ affected by the worst atmosphere conditions, high temperature, hu­ midity and the corrosive action of volatile solvents.

Head Sales Office: 52 VICTORIA STREET, WESTMINSTER, LONDON SW 1 Tel. ABBey 2023 N. 3 6 Septem ber 21,1945 E l e c t r ic a l R e v iSw 3 3 What price a million homes?

T he cost of post-war building will with the quality which the public will largely depend upon the cost of each demand. component. And the cost of each M.E.M. Switch and Fuse Gear has component will depend upon the way shown how this can be done. In the in which it is produced. Only the New largest and most self-contained factory Craftsmanship of large scale production specialising in such gear M.E.M. had, organised upon the most efficient lines up to the war, progressively reduced can combine low cost and quantity costs and prices and at the same time improved quality. This steady increase in production efficiency goes on and M.E.M. are ready to pass its benefits on as a contribution to the rebuilding of Britain.

SWITCHGEAR MOTOR STARTERS • FUSEGEAR ELECTRIC FIRES

MIDLAND ELECTRIC MANUFACTURING CO. LTD., TYSELEY, BIRMINGHAM, 11 London Showrooms and Stores : 21-22 Rathbone Place, London, W.l * Manchester Showrooms and Stores; 48-50 Chapel Street, Salford, 3 34 E l e c t r i c a l R e v ie w Septem ber 21, 1945

POWER IN THE LAND

* i s € e r j

@K]© OK] [IS

PQDIM[?S°[L 0@ K ™ @ M K T ?

9 R-A-LI STER & CO LTD DURSLEY GLOS

—...... m...... b ■ J # "iu& cuci ’ <% jyu n y ie a o ! ELECTRICAL INSULATING VARAISIIES

Stoving Varnishes, Black or Clear. Air Drying Varnishes, Black or Clear. Cable Lacquers, non-£Iam, etc. Sleeving Varnishes. Cloth Varnishes. Core Plate Var­ nishes. Copper Wire Enamels

W hy not submit your problems to us, there’s no obligation. inchin, Johnso WITLEY COURT, WITLEY, SURREY, and 6, ARLINGTON STREET, LONDON S 1 t'r Wormin' 280-4 • Regent oSS; , ’ September 2 1 , 1945 E l e c t r ic a l . R e v ie w 35

SPACE FOR GAS UNDER PRESSURE

ENFIELD builds the 132-kV COMPRESSION CABLE

0’4 sq. in. Single-Core Self-Contained % 90 3-Phase. 394 Amperes. External gas pressure giving a compound-filled gas-free dielectric.

ENFIELD CABLES LIMITED Brimsdown, Middlesex Telephone: Howard 2661 (10 lines) S ep tem b er 2 1 , 1 9 4 5 3 6 E l e c t r i c a l R e v ie w

ave'you had ST.' copy ARROW

Send for this leaflet which -well describes a new departure in fuse design and construction exclusive to— worth remembering S 1I D I °K 5 to ioo amp. T U A e A Arrow Electric Switches Ltd. Edward Wilcox & Co. Ltd Sharston Road. Wythenshawe, Mancheste HANGER LANE, LONDON, W.5

D 01 5359

F SOLUTION OF THE CYCLE STORAGE PROBLEM and Dielectric Compounds to Government Specifications—for • CONDENSERS • CABLES • TRANSFORMERS • C O IL S A.I.D. AND C.I.E.M.E. TYPE APPROVED FOR ARCTIC AND TROPICAL CONDITIONS. USED AND RECOM­ M E N D E D FO R SERVICE COMPONENTS. W i/lTE fo r ASTOR BOISSELIER CATALOGUE & LAWRENCE LTD- E R /2 0 I SALES DEPT.

NORFOLK HOUSE, NORFOLK STREET, CYCLE STRAND, LONDON, W.C.2 PARKS CONSTRUCTORS Telephone : Temple Bar 5927 NICKEL WORKS E RDINGTON Septem ber 21, 1945 E l e c t r ic a l R e v ie w 3 7

The "Meg' in su la tio n T e ste r

The finest electrical instruments carry the trade mark

EVERSHED & VICHOLES LTD CHISWICK • LONDON W.4

TELEPHONE: CHISWICK 1370 TELEGRAMS: MEGGER. CHISK, LONDON

When writing please mention D 5/60 S eptem ber 2 1 , 19 4 5 3 8 F i f c t r ic a i R e v ie w

CHANGE OF ADDRESS

THE LONDON SALES OFFICE of The Edison Swan Cables Ltd. (transferred to Lydbrook Works for the period of the war) is again located at 155, CHARING CROSS ROAD, LONDON, W.C.2

All correspondence for this Department should be forwarded to the above address.

PAPER INSULATED AND CAMBRIC INSULATED CABLES AND BARE COPPER. All inquiries and orders, with the exception of inquiries regarding the delivery of orders in hand, should be sent to 155 Charing Cross Road, London, W.C.2.

Inquiries regarding delivery of orders in hand should be sent direct to The Edison Swan Cables Ltd., Lydbrook, Glos.

RUBBER INSULATED CABLES AND ALL FLEXIBLE CORDS. All inquiries and orders should be forwarded to the nearest local Depot of The Edison Swan Electric Co. Ltd., where stocks of standard lines are held.

Matters referring to accounts should be addressed to The Edison Sivan Cables EDISON Ltd., Ponders End. Middlesex. SWAN EDISON SWAN CABLES LTD. HEAD OFFICE : CARI R 155, CHARING CROSS ROAD, LONDON, W.C.2. E lectrical R eview Managing Editor : Hugh S. Pocock, M.I.E.E. S e p t e m b e r 2 1 , I 9 4 5 Technical Editor : Commercial Editor: C. O. Brettelle, M.I.E.E. J. H. Cosens C o n t e n t s Page Contents continued— , Page Editorial.—Public Lighting . 393 Overseas Electrical Trade 416 Public Lighting Engineers . 395 Welidng Supplies. By A. G. Beech, Conference Exhibition . 400 M.Eng., A.M.I.E.E, . 417 Personal and Social . 403 I.E.E. Programm e 418 Correspondence . . 405 Electricity Supply 419 Views on the News . 408 Municipal Reports 420 The Paris Fair . 409 Financial Section 421 I.M.E.A. Activities . 410 Lamp Publicity .... 425 D.C. Mining Equipment . 41 1 New Patents .... 427 Combating Magnetic Mines . 412 Contract Information . 428 Commerce and Industry . 413 Industrial Equipment . 415 Bonding Plastics . . 415 Classified Advertisements 69 News from Australia . 415 Index to Advertisers 80

EDITORIAL, ADVERTISING & PUBLISHING OFFICES : Dorset House, Stamford St., London, S.E.I Telegraphic Address : “ Ageekay, Sedist, London.” Code : ABC. Telephone No. : W aterloo 3333 (35 lines). Registered at G.P.O. as a Newspaper and Canadian Magazine rate of postage. Entered as Second Class Matter at the New York, U.S.A., Post Office. Annual Subscription, Post free : British Isles, £2 7s. 8d. ; Canada, £2 3s. 4d. ; Elsewhere, £2 5s. 6d. Cheques and Postal Orders (on Chief Office, London) to be made payable to ELECTRICAL REVIEW LTD., and crossed " Lloyds Bank.”

McKechnie Non-Ferrous Ingots are uniform in composition and therefore easier to melt and handle. Produced by a perfect plant under constant supervision to the correct analysis, the McKechnie range of Non-Ferrous Ingots covers the entire need of the Brass Foundry. McKechnie Chill Cast Bars are closer in structure than Sand Cast Bars and possess greater homo­ geneity and resistance w ith an absence o f segre­ gation. They are clean, concentric and sound.

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THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXVII. No. 3539. SEPTEMBER 21, 1945 9d. WEEKLY

Public Lighting Impressions of Last Week’s Conference T HE Association of Public Lighting planning. Of course; but we cannot Engineers is to.be congratulated as subscribe to any view which supports the being the first electrical professional idea that major street-lighting develop­ organisation to be able to hold a major ment work, particularly with regard to post-war conference ; in the peculiar siting, must await the actual establish­ aptness of the expression of relief it ment of the roads. The “ architecture ” represented—light after dark or street of both road making and street lighting lighting after the black-out; and in cannot be as impoverished as that. putting up a really good show. We Further, street lighting engineers are saw the conference sessions without a preponderantly electrical engineers, and vacant seat, the luncheon tables manned electrical engineers have had some in strength, and the exhibition hall crowded lessons on how to bring about mutually to “ saturation point.” profitable co-operation. A measure of gloom tends to mask this happy picture, however, as the result The Ideal of the threatened imposition of restrictions We liked the President’s reiterated on public lighting on account of to-day’s street-lighting ideal—that the drivers of fuel shortage. Worse, many members vehicles shall see the streets independently talked about this shortage as if it must of the lights carried by their vehicles. be a permanent feature of our national It presents a sound engineering problem. life. In asking whether these restrictions And if we may answer a presidential are really necessary, we woukl like to query, we certainly ought to light for know something about the true economic something far more than mere safety value of lighting cuts, especially by way visibility. of comparison with possible economies in The conference did not bring forth any many other directions. notable controversy on broad principles— and we are glad of it, for this is essentially Lighting and Efficiency a stocktaking time. All the same we The call to-day is for maximum post­ cannot agree that, for instance, the 1938-9 war emergency production ; and, as question of sodium versus mercury vapour engineers, we know something of the has been settled—far from it, and tungsten value of the contribution of the best lighting still exerts a very big influence. possible general lighting to improved But we do believe that the experience production efficiency. obtained in connection with discharge We heard many expressions of the lighting has taught the electrical industry necessity for taking the long view of a good deal about directional lighting. public lighting development, particularly Certain comments were heard relating in relation to post-war reconstruction to public lighting centralised automatic and the problems of road and town control systems, which conveyed the S ep tem b er 21, 1945 394 E l e c t r i c a l R e v ie w

impression that the systems were designed “ circumferential ” trade between the precisely for to-day's peculiar conditions daughter countries themselves with Canada relating to economy, restrictions, etc. as a predominating factor. Recently the Early in the war we heard much the same Indian Trade Commissioner in Montreal sort of thing with regard to possible war­ said that the total value of trade between time lighting. We are not quite happy India and Canada in 1944 reached the about this. Centralised automatic con­ record figure of more than $202 million, trol is a logical development consequent an increase o f $51 m illion ov er 1943 upon lighting progress. It has little or and nineteen times more than the nothing to do with retardation. It should figure for 1938. He considered that be regarded in the light of the wider India could easily buy increasing quantities opportunities of to-morrow rather than of consumers' goods from Canada, in­ be tied up with the limitations of to-day. cluding electrical goods and appliances, as well as factory equipment. A l t h o u g h the magnetic

“ Degaussing ” mine was one of the first of R e f e r e n c e s are begin- Hitler’s “ secret weapons,” Disposal of ning to a p p e a r to ways in it is only during the past few days that the Surplus which surplus stores in general particulars given in this issue have the hands of Government been officially released. Its menace was Departments are to be released. For most obvious during the early months of instance the setting-up of a Wool Industry the war, but its use on a large scale in Surplus Cloth Corporation is announced. various forms (e.g., the reversed polarity Its function will be to take over from the type for catching “ over-degaussed ” ships Government stocks of cloth and dispose and the intermittently actuated type) and of them in an orderly way through trade with ever improving sensitivity was con­ channels for civilian use. We believe tinued throughout. That it did not figure that some such plan is in hand for dealing more largely in the news in the later with electrical equipment but it seems to stages was due to the ready ability of be proceeding very slowly. It is not scientists to devise counter-measures as known how much there is, or of what soon as, or even before, the need arose. nature, but it seems to us that its release As in this country, would help to relieve to some extent the Supply people in France are ask- shortage of supplies which slow demobili­ Restrictlons ing whether electricity will sation of men from the Forces and “ re­ again be curtailed next conversion ” difficulties are not remedying. winter. There is a big difference, however. E m p i r i c a l discoveries In Paris, instead of a shortage of kW on Diamond of uses for electricity are the peak on a few cold days, there was a Cutting not uncommon. So far lack of kWh at all times. At the time no scientific explanation of the liberation only 200,000 kWh per has been given of the claim, as investigated day was available, so that flats could be by the U.S. National Bureau of Standards, lighted for only 1 \ hours. In January the that the cutting rate of diamonds can be amount rose to 13-5 million kWh. Since materially increased by producing an then both coal and transport conditions have improved and it is hoped, with the electric arc at the contact between the diamond and the flat cast-iron lap charged aid of interconnected hydro stations, to with diamond powder, while even octa­ provide a more extensive service. Elec­ hedron faces proved amenable. The lap tricity in Paris is said to cost four times was connected to one of the secondary as much as it did before the war. terminals of a 5,000/100-V, 300-VA, “ S e l f - sufficiency ” is transformer with a capacitance of 0-005 to Inter-Imperial not the only factor likely 0-008 fiF across the secondary leads. If Trade to affect our future trade the primary current of 0-5 A and the with the other countries capacitance were reduced the cutting rate of the Empire. For years past Great was decreased, but so it was when the Britain has been viewed as the centre to current was increased. By applying the and from which radiated Dominion trade arc to the diamond saw its rate was also routes, but gradually in addition to this greatly improved and cuts could be made “ radial ” traffic there has grown up under any orientation. Septem ber 2 1 , 1 9 4 5 F i f c t r i c a i R f v ie w 3 9 5

l*iiR»lic U ;» lit in;» i^ii^ineorN Successful Conference at Glasgow

HE three-day conference of the Associa­ Members of Council, J. F. Colquhoun T tion of Public Lighting Engineers was held (Sheffield), H. V. Emptage (Margate), N. in Glasgow last week under the presidency of Boydell (Eastbourne), E. C. Lennox (New­ Mr. E. J. Stewart, inspector of lighting to the castle-upon-Tyne), Robert Lee (St. Pancras), Glasgow Corporation. All arrangements H. Pryce Jones (Brighton), A. S. Tapsfield had been made for a conference in Glasgow (City of London), T. Wilkie (Leicester), and in September, 1939, but it had to be cancelled C. I. Winstone (Gas Light & Coke Co.); on account of the war. There was an Hon. Treasurer, H. C. Brown (Gas Light & attendance of about a thousand delegates Coke Co.). and visitors from all parts of the British Isles. Proposals for altering the constitution On September 11th the Lord Provost were discussed. The points raised will be (Mr. James Welch) gave the Association a considered by the Council and a final draft civic welcome at the Royal Technical College will be sent to members before the calling of and expressed his added pleasure in doing so a general meeting. It was explained that the as the conference celebrated the coming of aim is to conduct the affairs of the Association age of the Association. Mr. E. C. L e n n o x in future on the lines of a professional body; (Past-President) thanked the Lord Provost, it was proposed to alter the title to “ The and M r; S. B. Langlands, a previous Institution of Public Lighting Engineers.” inspector of lighting in Glasgow, and Captain Modifications were proposed in regard to A. J. L i b e r t y , formerly inspector of lighting qualification for membership. The Council to the City of London Corporation, both did not propose to institute an examination founders of the Association, gave a brief scheme yet but suggested that full membership account of the earlier conditions of street should only be granted to those who held the lighting and commented on subsequent diploma of the Association, or were at least developments. thirty years of age and held responsible At the annual general meeting which positions as heads of public lighting depart­ followed the hon. treasurer (Mr. H. C. ments which had control of not less than B r o w n ) submitted the accounts and, drawing I,000 lamps and, in addition, were associate attention to the fact that the income had members of the Association. Alternatively, been well maintained, said that the slight corporate membership of the I.E.E., the falling off was accounted for by a number of Institution of Gas Engineers or the Institution members who had been called to the Forces of Mechanical Engineers might be deemed to and whose subscriptions had been suspended be sufficient qualification. The Council

The Lord Provost of Glasgow receiving the delegates

by decision of the Council. The Association might also admit to full membership other had been able to live within its income. persons whom it considered had suitable The result of the ballot for officers and qualifications. Council for the coming year was as follows :— Proposals were also made with regard to ad­ President, E. J. Stewart; Vice-President, mission to associate membership of associates W. N. C. Clinch (Northmet Power Co.); and students. 396 E lectrical Review S eptem ber 21, 1945

The President extended a cordial welcome Mr. J. F. Colquhoun (Sheffield) com­ to Monsieur Herzog, the Paris city engineer, mented on the small saving that would be and Monsieur Gaymard, of the Paris Elec­ effected and suggested that a sense of propor­ tricity Company. tion was necessary. In Sheffield the saving With regard to the Papers Competition, it would be from i to 1i per cent, o f the was announced that four were sent in and domestic consumption. Mr. H. M i d g l e y (Plymouth) pointed out that if the lamps were turned off at midnight it would be generally impossible for practical reasons to put them on again in the morning. What did the Ministry propose should be done to avoid danger in the streets ? A lderm an T h r a v e s (Sheffield) and Alder­ m an R. B u s h b y (Burnley) supported the Minister’s appeal, and Mr. K elf Cohen replying said the Minister would be greatly heartened by what had been said. Mr. J. M. W a r d then read his paper on “ Glasgow’s Street Lighting ” (vide our last issue) and there was no discussion. On Wednesday, September 12th, Mr. F. F. M i d d l e t o n read his paper on “ Lighting of Bends, Junctions and Roundabouts.” The Mr. E. C. Lennox (N . E. Electric Supply Co.) discussion was opened by Mr. F . C. S m ith at the microphone (Gas Light & Coke Co.) who said that while he agreed with most of the author’s findings that the following had been selected as first he felt that the paper so simplified the and second: “ The Relation of Public problem that if it were not interpreted Lighting to Safety on the Roads,” by Norman correctly it might be misleading. The picture Axford (Northmet Power Co.) ; and “ Photo­ drawn by the author metry in Relation to Street Lighting,” by was on a static F. M. Hale (Technical Assistant, Glasgow basis but anyone Lighting Department). It had been intended traversing a street that the winning papers should be presented whether as a motor­ at the conference but there was no time. ist or a pedestrian On the Tuesday afternoon the president did not find the delivered his address which was summarised conditions static. in our last issue, and after a vote of thanks m $ f ! to the President, Mr. R . K elf Cohen (D irec­ tor, Gas and Electricity Division, Ministry of Fuel and Power) re­ ferred to the circular issued to local author­ ities on August 22nd, urging them to shut off public lighting at mid­ night. The Minister regretted having to take this drastic step but economies were imperative. It was hoped that by the end of September every local authority W OUld M r. F. F. Middleton presents his paper on the lighting of bends and have taken steps to road junctions effect a substantial saving in fuel used for street lighting, but if The road brightness from the point o f view by the end of September the reports of the of a car driver, for instance, changed from Regional Controllers indicated that there time to time in consequence of the different were still a few authorities who did not reflection co-efficients according to the angle realise the need for economy, he would have ot approach. Moreover, the background to consider whether he should not resort to against which a driver saw an object was the powers he possessed in this matter. misleading. J Septem ber 21, 1945 E l e c t r ic a l R e v ie w 397

M r. E. L. Leeming (Urmiston) said that should not be prepared solely from the elec­ lighting would be very much improved if trical point of view and then applied to gas. bends were super-elevated instead of cam­ Electric lamps were placed high because bered. In that case the lighting would be there was glare from them but gas did not better if it were from the inside of the bend. need to go so high. If all cyclists were to be taken off the roads M r. E. C. L e n n o x (North Eastern Elec­ and put on cycle tracks, tric Supply Co.) said the lighting would that glare was a matter have to be recon­ of proportion. It was sidered. More econ­ not a question of gas omical Lighting might versus electricity but be obtained as well as of contrast. The more uniform distribu­ author was correct in tion with a greater not talking about road­ use of super-elevation. way brightness but of Something might be background bright­ done to improve road ness, which included safety by using a the road surface, back­ different coloured light ground and everything when a junction was within the line of being approached. On vision; he did not roundabouts the slope know of any electrical of the road should be firms who were de­ inwards and this would signing lanterns for again permit of level Mr. J. S. Smyth reading his and Mr. J. G. roadway brightness. Christopher’s paper on lantern design lighting on the inside Lighting engineers of the bend instead of high level lighting were now convinced that they must outside. create background brightness. There were M r. R. G r e a v e s (St. Helens) expressed the two types of distribution. One was the view that high-level lighting, which could be cut-off type, which the author advocated, seen at a distance, better enabled the traffic in which most of the illumination was cut-off to get round a bend. A low mounting over an angle of 75 deg. and the other was height pre-supposed a low intensity illumina­ the non-cut-off type which gave maximum tion but it was possible to have two low illumination between 75 and 85 deg. The intensity sources at the lower mounting reason for the higher angle was to create a height and obtain greater uniformity at brightness on the road surface and on the lower cost. Specifications for street lighting footpath, and to a certain extent on the

Part of the attentive audience Septem ber 2 1 , 1 9 4 5 3 9 8 E l e c t r i c a l R e v ie w

other surfaces of the background, and one important point which had not been brought out was that with the non-cut-off type o f dis­ tribution the lamps could be 150 ft. apart with a consequential reduction in running costs. M r. M i d d l e t o n replying to the dis­ cussion, said that where the brightness varied the installation was badly designed. As to a different coloured light to in­ dicate the approach to a bend or junction, there was the problem of eye adaptation. Super-elevation of the road surface at bends would not be necessary if there were good background lighting on the pavements. Motorists illuminated the roadway for them­ Apparatus for measuring light distribution characteristics selves. There were many lanterns designed to scatter the light the Association, said that public lighting on the road. He was not advocating the engineers were looking forward to giving a cut-off type of illumination any more than much better service than before the war, but conditions made it necessary for econo­ mies to be practised just at a time when the public had begun to have an apprecia­ tion of good street lighting. A great deal of excellent work was being done by the Association in con-

(Above) Messrs. W . Henly, G .T. Allcock, A. N. East and M. E. P yser (Right) Messrs. E. T. Pound, S. E. H ill, Dr. H. E. Gillbe and Mr. McGibbon

the other type, and as to the use of 150 ft. poles being an advantage, lower mounting heights and lower intensity sources with shorter spacing would, he contended, to give just as cheap results, junction with his Society, the British Stan- After this session the conference luncheon dards Institution and other organisations was held at the Grosvenor Restaurant, the The President, responding to the toast, president being in the chair. said that the work of the Association and Mr. E. S t r o u d (president. Illuminating the Society was related and thev would Engineering Society), proposing the toast of continue to co-operate to make public September 21, 1.945 E l e c t k ic a l R e v ie w 399

Dr. Gillbe (Ministry of W ar Transport) with a group of members at the exhibition lighting far better than it had ever been. He specification but others had thought that a expressed the thanks of the Association to Code of Practice would be the better method. manufacturers of street lighting equipment This might be supplemented by a specification for their contributions to the exhibition. for a street lamp and other details. The In the afternoon Dr. J. W . T. W a l s h main committee had decided by a substantial outlined the work of the drafting sub­ majority to proceed with a complete committee of the main committee of the specification. British Standards Institution dealing with the It was stressed, at the request of Dr. C. C. specification on street lighting, to implement Paterson, chairman of the committee, that the re-draft which had been circulated to all organisations concerned was pre­ sented for com m ent and constructive criticism in order that a complete street lighting speci­ fication might be prepared. Dr. Walsh

(Above) Mr. E. Kelso (H arro­ gate) with his chairman (Councillor M. E. Mail) and Mr. Illingworth (Poplar)

(Right) Mr. W. J. Jones (E.L.M.A.), Mr. S. E. B r itto n (Chester) and Dr. J. W . T . Walsh (N.P.L.) the Ministry of Transport Report o f 1937. Dr. Walsh said that a re-draft of the B.S. No. 307, first issued in 1927 and revised in 1931, had been circulated for technical then went through the many items in the comment. Streets had been classified into re-draft and there was considerable discussion eight groups—“ A ” to “ H but the on the various points of detail. Comments present proposals related only to traffic in writing were also asked for. routes as defined in Group A. Views had Messrs. J. S. Smyth and J. G. Christopher been expressed in favour of a complete (G.E.C.) read their paper on “ Engineering 400 E le c tr ic a l R eview September 2 1 ,1 9 4 5 Principles in Street Lantern Design ” on Lighting Demonstrations Thursday morning and the opener of the EMONSTRATIONS by the Glasgow discussion, D r. S. E n g l i s h , spoke of the importance of the aesthetic outlook in regard » Electricity D epartm ent o f various tests to lantern design. Lie said that the corrosion created great interest indeed at the conference. of aluminium alloys was largely electrolytic, In apparatus for the measurement of light due to the contact of two dissimilar metals. distribution from large lighting fittings the It was possible to use pairs of metals which fitting is supported so that an angled mirror would not cause this form of corrosion. can be rotated about, it in a vertical plane. A photometer is mounted at a suitable distance Mr. W. J . J o n e s (E.L.M.A.) said in recent years the general life of the 400-W and from the fitting, enabling the illumination, via 250-W mercury vapour lamps had been the mirror, to be measured at all angles in the increased from about 1,500 to 3,000 hours. vertical plane. A n angular divided scale This halved lamp costs and greatly facilitated enables readings to be taken in any place and reduced maintenance. Other improve­ simply by turning the fitting. ments in lamps were also confidently to be In connection with the life testing lamp racks expected. shown samples are taken regularly for bulk deliveries of lamps and fully checked for Mr. J. F. C o l q u h o u n (Sheffield) urged the need for the greatest possible co-operation conformity with the appropriate B.S.S. Another between makers and designers and users to demonstration apparatus was a cube for the simplify installation and maintenance. measurement of lumens output from large M r. E. Gardiner Thorpe (borough lamps and fittings. In this apparatus the total surveyor, Slough) asked whether it was light outputs from street lighting fittings are likely that mercury vapour lamps in sizes measured. The fitting is suspended at the below 80-W would be available in the near centre of the cube, which has sides measuring future, suitable for side street lighting. It ten feet square, and the brightness of a small would be an advantage if the control gear window in one side is measured by a photo­ could be turned out as a complete unit ready meter. Comparison of the brightness with that to be fixed to a board in the base of the pole. obtained when a standard lamp of known M r. G. E. H e l l (borough engineer, Graves­ lumens output is substituted in the cube end) said that the electric lanterns in his area enables the output of the fitting under test to had remained in position throughout the be measured. war and when they were taken down last year less than 10 per cent, were found to The Exhibition have any serious defects, and these related ■ UDGING alone from the good attendances almost exclusively to the anodised aluminium at all times we must say that the exhibition reflectors. of street lighting equipment was at least one of M r. E. C. L e n n o x expressed the hope that the “ highlights ” of the conference. the tendency among the exhibits at the It seems to us that the aspects which both the exhibition for the use of larger bolts and manufacturers and the public lighting engineers nuts would be continued. He was also are at the moment stressing are those relating pleased to see the side entrance of the wires to maintenance, the present interim period of to the lantern. unsettled conditions, certain objections to M r. S m y t h , replying to the discussion, discharge lighting, light control, and the likely expressed agreement for the need of co­ general acceptance of the horizontal lantern as operation between the designer and users of the best for distribution and aesthetic considera­ fittings and suggested that the A.P.L.E. tion. We have selected for mention particular might inaugurate a “ News Letter ” in which items of equipment, but the one aspect stressed comments and suggestions might be made in any case must not be taken to mean that it which would be of the greatest value to the is the only or even the most important feature. designer. He did not know whether a The concrete lighting fitting developed by mercury vapour lamp below 80-W was on Siemens Electric Lamps and Supplies, Ltd., in the stocks; the suggestion that the control collaboration with Concrete Utilities, Ltd., is a gear should be in a separate unit was good expression of the consideration given to excellent and no doubt designers of auxiliaries maintenance. The pole bracket and the lantern would bear it in mind. head are a single concrete casting. In the head The conference closed with votes of thanks are insets to which a metal ring is screwed, and to the Lord Provost and Corporation of on the ring is a strap which carries the lamp­ Glasgow for their hospitality and to the holder. The 7-in. “ Duodome ” refractor (a numerous officials who had assisted. single-piece one may also be used) is held M onsieur G a y m a r d expressed the hope between external and internal spinnings, and that it might be possible to hold a conference projecting trom these spinnings are three of the Association in Paris in 1947 and notched studs which enable the refractor to be promised to do all in his power to make it put into position by a simple push motion successful. The President said the sugges­ which automatically effects locking. A quarter tion would be considered by the Council. turn of the studs unlocks the refractor, while ». Hi Sep/em ber 21,1945 E lectrical Review 401 ons

Some of the exhibits seen at Glasgow

» T h e G .E .C . “ Double-Dish ” lantern. B.—Economical range by Falk, Stadelmann. C.—- ns concrete fitting designed for easy maintenance. D. —Holophane horizontal (400-W lamp) :n which the bracket arm goes right through the lantern housing. E.— In the Metrovick “ Trafford ” fitting the bowl comes right away. F.—B.T.H. “ Dilen ” lantern. G.—The bottom h 'n d door of the Ediswan “ Newland ” facilitates maintenance. H .—The facet idea is employed g ¡n these fittings by the Electric Street Lighting Apparatus Co. 402 E l e c t r i c a l R e v ie w S ep tem b er 2 1 , 1 9 4 5

the studs are asymmetrically placed so lhat the distribution for main-road lighting and takes up refractor is always in the correct position in to a 1,000-W tungsten lamp. Another fitting relation to the roadway. The fitting may be was designed initially for covered market equipped with a 60-W to 200-W m.f. lamp or lighting but it should serve well for many street with an 80-W or a 125-W mercury-vapour lamp. lighting schemes because of its directional The design for a later development on the capabilities. It will take up to a 200-W tungsten same principle, but for larger lamps, 250 W lamp. and 400' W, employs a bowl refractor; air The Revo Electric Co., Ltd., has introduced tubes in the lantern head carry off excess heat. a “ blended sodium ” lantern. In addition Another contribution to improved main­ to one 140-W horizontal sodium lamp it is tenance is the “ Trafford ” lantern developed equipped with two 100-W tungsten lamps. Over by the Metropolitan-Vickers Electrical Co., Ltd., 12 000 lumens is obtained from the 340 W for “ Group A ” roadways. The bowl comes o f lam ps. right away from the fitting, so that it can be cleaned at ground level. When the lantern is Three-Lamp Fitting opened the bowl remains securely fixed to the The Brighton Lighting & Electrical Engineer­ ring, while the complete bowl and ring may be ing Co., Ltd., has also set out to meet such easily lifted from the hinge. The bowl is of objections by the production of the “ Triplite ” special heat-resisting glass which remains lantern. But this is coupled essentially with unaffected even when chilled water is sprayed another aspect, namely, a growing tendency to on it after it has been raised to a higher tem­ regard the horizontal discharge lamp as offering perature than that attained in normal service. the correct method of lighting distribution for The lantern is designed for use with a 250-W or roads. The “ Triplite,” with its three tungsten 400-W mercury-vapour lamp and incorporates lamps in line in one plain glass housing, each a magnetic arc-controlling device. lamp having its own separate refractor, aims to Low maintenance cost has been the aim of get as near as possible to horizontal-lamp the Engineering & Lighting Equipment Co. in distribution. The three separate lamps also producing the “ Welwyn ” w'hich is suitable for provide a means of switching off part of the a 60-W to 200-W tungsten lamp or an 80-W or lighting without creating blank spots. a 125-W mercury-vapour lamp. It has a one- The “ Newland ” lantern of the Edison Swan piece casting of special aluminium alloy and a Electric Co., Ltd., which also accommodates new design of single-piece refractor which horizontal discharge lamps, is designed to take affords two-way distribution at 170 deg. advantage of the greater ease and efficiency Simplicity of maintenance is a point stressed with which the light can be controlled when the for a horizontal mercury-vapour lamp shown lamp is in the horizontal position. The optical by Holophane, Ltd. It takes a 400-W lamp system consists of a reflector in combination and is constructed for side-entry fixing, and the with prismatic glass refractors. The light bracket arm goes right through the lantern emitted between 80 deg. and the horizontal is housing, so that the weight is evenly distributed closely controlled in order to minimise glare. over the arm and the lantern. The housing is The novelty of the exhibition, we should say, made of silicon-aluminium alloy and the base is the “ Double Dish ” lantern shown by the bowl is hinged, with simple captive wing-nut General Electric Co., Ltd. This breaks away fixing for easy accessibility. from the conventional, mainly because, with its top and bottom bowls, it is nearly all glass. Simple Fixing Arrangements The metal work, which is almost confined to Easy maintenance, fixing and wiring are the small central mounting piece at the top, is features of the “ Dilen ” side-entry lantern of aluminium alloy and the optical system is developed by the British Thomson-Houston smooth outside for easy cleaning. The lantern Co., Ltd., and our sectional illustration depicts is designed for use with a 250-W or 400-W the simple method of fixing it to the bracket arm, horizontal discharge lamp. the easy wiring to the connector block, the A feature of the exhibit by Philips Lamps, quick-action catch for reducing the servicing Ltd., is a number of lantern slides of public time, the readily, removable top cap by means lighting installations using “ Philora ” lamps of one wing nut, rigid bowl retaining ring, and projected on to a screen. the lip to prevent the ingress of water. Displays and demonstrations of control systems Lalk Stadelmann & Co., Ltd., have developed and equipment, included time switches by the a wide range of lighting equipments which Automatic Telephone & Electric Co., Ltd.; should serve not only for permanent-housing the Record Electrical Co., Ltd.; the General areas, but will be within the economic limits of Electric Co., Ltd.; Sordoviso Switchgear, Ltd.; temporary housing schemes and generally meet Sangamo Weston, Ltd.; Venner Time Switches, the necessities for damage replacements, etc., Ltd. ; British, Foreign & Colonial Automatic until the position is more stabilised. Light Controlling Co. ; and the Horstmann Similarly the Electric Street Lighting Gear Co. Standards were shown by the Stanton Apparatus Co. emphasises that its facet principle Ironworks Co. and Poles Ltd., and among of construction is particularly suited for general- brackets on view was a Siemens concrete purpose work. A bowl fitting gives circular model. Septem ber 21, 1945 E l e c t r ic a l R e v i e w 403 PEKSOXAL and SOCIAL News of Men and Women of the Industry

TM^HE Minister of Fuel and Power has agreed tained by the directors of the -company. to release Sir John Dalton from the position Messrs. W. C. Boobyer and E. A. Stroud, of Regional Controller, London and South- on behalf of the employees, thanked the directors Eastern Region, and has appointed Mr. H. and Messrs. Campbell Jones (chairman) and O'Halloran as Regional Controller for London C. N. Cooling (managing director) responded. and Mr. G. leB. Diamond to take charge of the Mr. H. P. Wells, general manager of the South-Eastern Region. General Electric Co.’s Telephone and Radio Mr. A. J. Fippard, chairman of the Joint Works, Coventry, is Committee of Electricity Supply Organisations, retiring this month. He has been elected vice-chairman of the Council will be succeeded by of the Conjoint Conference of Public Utility Mr. R. E. Robinson, who Associations, representing the electricity supply has been deputy general interests. manager of this im­ portant section of the Mr. James P. Montgomery, sales manager to G.E.C. organisation for the Mersey Power Co.. Runcorn, is relinquishing the past two years. this position at the end of this month to take up W hen, in 1908, the the appointment of appliance sales manager G.E.C. decided upon a with the West Gloucestershire Power Co. Mr. considerable expansion Montgomery's early training was with the in the manufacture of Clyde Valley Electrical Power Co. modem telephone equip­ Mr. Ashley P. Pope, a very well-known figure M r. R. E. Robinson ment, Mr. Robinson in the electrical industry, is retiring at the end of joined the company as the month from the position of contract manager chief engineer of the telephone works, and has to the Southern works of United Telephone been connected with this and the sales side ever Cables, Ltd. Mr. Pope is a Kentish man, born since. in 1875, and was educated at Denstone College, Captain A. N. D. Kerr, A.M.J.E.E., R.E.M.E., near Uttoxeter, Staffs. now released from the Army, is joining the staff His apprenticeship was of the Electrical Power Engineering Co. served with W. R. Ren- (Birmingham), Ltd., in an executive capacity. shaw & Co., Stoke-on- For the past few years he has commanded a Trent. and while with mobile repair workshop overseas, and has them he took part in a twice been mentioned in despatches for services wide variety of contracts, in North Africa and Italy. Before the war, including the electrical Capt. Kerr was Midland agent for E.P.E. installation at Queen flam eproof m otors. A nne's Mansions, Air Commodore Hugh Leedham, who took over L ondon, in 1894. A t the duties of managing director of Ericsson the same time he gained Telephones, Ltd., on September 1st, was born a reputation as a runner. at Rowley Regis, Staffs, and was educated at After a period with the Dudley Grammar School and Birmingham Crosby Steam Gauge & M r. A. P. Pope University, graduating in science and engineer­ Valve Co., he joined ing. He became a Johnson & Phillips as sales manager (in 1906) but lecturer in the Dudley temporarily severed his connection with them in Technical College but 1915 when he was appointed general manager of left there in 1915 to be­ Robey & Co., Lincoln. Here he introduced come a wireless operator aircraft manufacture and then went on to in the Royal Navy. Hewlett & Blondeau, Ltd. Later he was with Later as special lecturer the Vickers-Spearing Boiler Co. and the Stirling at the Royal Naval Boiler Co., and then joined the Union Cable Co. College, Greenwich, he to look after the company’s research interests. shared in the pioneer In 1934 he was appointed to the post from which research work which he is now retiring, since when he has laid many resulted in a practical thousands of miles of trunk telephone cable. radio valve. After Mr. Pope's many friends will wish him many service overseas he re­ years of happy retirement. turned to England to A ir Cdre. H. Leedham Nearly 500 employees of Peto Scott Electrical supervise the planning Instruments, Ltd., had a very enjoyable outing and building of the Electrical and Wireless to Briehton on September 10th, being enter- School at Cranwell and was awarded the O.B.E. D+ 404 E l e c t r i c a l R e v ie w September 21, 1945

in 1929. From then to 1935 he was head of the Branch of the A.S.E.E. and was branch secretary Radio Division of the Royal Aircraft Establish­ for two-and-a-half years. ment, Farnborough, Hants. Mr. F. G. H. Bedford is at his own request In 1935 he went to the Air Ministry as relinquishing his position as chairman and assistant director of research and development joint managing director of C. A . P arsons & Co., (aircraft instruments) and during the years Ltd., at the end of this month after serving 1937-9 when radiolocation was developed was with the company continuously for nearly deputy director of radio research and develop­ forty-five years. He will remain on the board m ent. F rom 1940 to 1943 A ir C om m odore of directors and will act in an advisory capacity. Feedham was director of radio production, Sir Claude D. Gibb, C.B.E. joint managing M.A.P., and was responsible for the production director, who has been with the company for of all radio and radar equipment for the R.A.F. twenty-two years, has been appointed chairman and Fleet Air Arm and for all radar production and managing director. for the Army. In 1942 he was awarded the C.B. for services in connection with radiolocation and Mr. A. J. Scaddon, assistant distribution from 1943 to 1945 he was director of radio engineer in the Portsmouth Electricity Depart­ research and development, M.A.P. ment, has been promoted to the position of Mr. H. D. Parsons, M.I.A.M.A., has relin­ distribution engineer in succession to Mr. quished his position as publicity manager to A. G. Hiscock, who has retired. Johnson & Phillips, Ltd., after nearly twenty- Mr. G. H. Rosam has returned to the three years’ service with the company. He has “ H.M.V.” Household Appliances Division joined Enfield Cables, Ltd., in a similar capacity. after wartime service with the Ministry of Mr. Parsons commenced his engineering career Aircraft Production where he was head of the with William Geipel & branch for radio aids for navigating and landing Co., Ltd., and after aircraft. His principal contacts will be with serving in the Honour­ electric power companies and service dealers. able Artillery Company during the 1914-18 war, became a member of the Obituary drawing office of the Mrs. F. H. Whysall.—We regret to report the I.R.G.P. Co. In 1923, he death of Mrs. Frank H. Whysall which occurred joined the sales staff of very suddenly on August 6th at Southsea, J. & P. as assistant to the where she was staying with her husband, the late Mr. E. H. Reeves, former city electrical engineer of Belfast, who and he was appointed has been with the Admiralty since his retire­ publicity manager in ment. Mrs. Whysall’s charming personality 1930. During the war, he will be much missed by her many friends in the was responsible to the M r. H. D. Parsons electrical world. She was a well-known and management for all Civil Defence affairs at Charlton, and was O'fficer regular visitor at the I.M.E.A. Conventions before the war. Commanding the J. & P. “ F ” Company, 25th London Battalion, Home Guard. He Mr. E. O. Walker.— Mr. Ernest Osborn Walker commenced his new duties at Victoria House, died at his home at Salford, on September 7th, Southampton Row, E.C.l, on September 3rd. at the age of seventy. Mr Walker was formerly In a recent broadcast General Sir Frederick chief electrician at the Manchester Royal Pile made special reference to the able assistance Exchange, and at the Manchester Guardian and rendered in scientific research on problems of Evening News. Later he founded the firm of A.A. gunnery by Mr. L. H. Bedford, director E. O. Walker & Co., Ltd., of which he was of research to A. C. Cossor, Ltd. Mr. Bedford managing director. has been associated with the development of Mr. D. J. Sinclair.—We regret to report the radiolocation from its early days. He was death, on September 13th at the age of fifty- awarded the O.B.E. for his work in 1943. three, of Mr. D. Johnstone Sinclair, managing Lieut.-Col. H. H. Vost, who served with the director of the St. Helens Cable & Rubber R.E.M.E. throughout the war, has resumed his Co., Ltd., and a director of the Automatic position of sales engineer with the Electric Con­ Telephone & Electric Co., Ltd., the Midland struction Co., Ltd. Electric Corporation for Power Distribution, Mr. Harold Greaves has resigned his position Ltd., and other companies. as chief electrical engineer with Rolls-Royce, Captain J. G. Hines.—We learn with regret Ltd. (Crewe Division) to take up the appointment of the death of Captain John Gerald Hines, at of technical assistant (industrial power) with the age of sixty-eight. At the time of his retire­ the British Electrical Development Association. ment he had served in the telephone service for Before joining Rolls-Royce, Mr. Greaves was forty-three years and had reached the position district sales engineer with the North Wales for th^ engmeer; He was largely responsible Power Co., at Nantwich, Cheshire. He was for the conversion of London exchanges to responsible for the formation of the Crewe automatic working. September 21, 1945 E l e c t r i c a l R e v ie w 405 CORRESPONDENCE Letters should bear the writers' names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents' opinions.

Plugs and Sockets The facts which emerged from these | FIND that many people are confused further discussions were so convincing that as to what has been happening about the Committee, with the concurrence of the plugs and sockets. This confusion has been manufacturers’ representatives, issued its increased by the B.S.I. statement, which final and unanimous report. In an appendix may easily give the impression that the Study it said : “ Having regard to all the evidence Committee recommended an up-rated 5-A . . . we have reached the unanimous con­ plug. This is contrary to the facts. clusion that a completely new type of 3-kW The Study Committee, convened by the socket outlet and fused plug should be l.E.E. at the request of the Minister of Works, adopted,” and added that B.E.A.M.A. had was asked to review existing practice and agreed as a matter of urgency to proceed make recommendations for post-war building. with the preparation of a suitable design. Most of the members had first-hand know­ Consequently to refer to paragraph 92 as ledge of some aspect of the electrical equip­ the majority report of the Committee, and ment of buildings and the Committee was to try to discount the final unanimous well balanced among the various interests. report is misleading. On many matters agreement was quickly This recommendation was accepted by the reached, but plugs and sockets (as Electrical Industries Committee of the B.S.I. always) proved to be difficult. While the and the next step should have been the issue discussion on these was proceeding the of a Standard Specification. For nine Ministry was pressing for the report. A months nothing happened. In the mean­ decision had to be made as to whether to time the Codes of Practice Committee had, accept the manufacturers’ up-rating proposals jointly with the Study Committee, con­ without further discussion, or whether to sidered and approved the recommendation await further information which had been for a new fused plug, but it had also become requested, and leave this question for a known that the B.S.I. Committee would not supplementary report. The vote was on be averse from reconsidering its decision. this issue and this issue alone. It was not a The opportunity arose and it has now ex­ vote on the relative merits of a new fused communicated the 3-kW fused plug and plug or an up-rated 5-A plug. There was a decided instead to up-rate the 5-A plug to small majority in favour of settling the 13 A and to put the fuse in the socket. It matter without further delay. Paragraphs has been stated that before the second 92 and 93 of the Committee’s report make B.S.I. meeting, four additional B.E.A.M.A. this quite clear. ■ members had been appointed to the Com­ Two things then happened. The Electrical mittee (making their number eight with only Contractors’ Association protested against one from the E.C.A.). up-rating, on safety grounds, and the manu­ The B.S.I. decision is contrary to the facturers produced their long-awaited designs recommendations of the Study and the Codes of the up-rated fused socket. These proved of Practice Committees; it ignores the to be bulkier and more costly than the protests of the electrical contractors; and majority had expected. The minority view, it is contrary to the wishes of 90 per cent, that more detailed examination was necessary, of the supply undertakings. How can this was fully justified, and accordingly further be defined as “ standardisation by agree­ meetings were held. Contractors and manu­ ment ” ? Every experienced installation facturers were given full opportunity of engineer has long since realised that a fused stating their views; designs and prices of plug to be used in multiple on a single circuit fused sockets and fused plugs were examined would be a most valuable accessory. It is and a number of wiring estimates prepared not generally known that the l.E.E. Wiring for the two systems. Rules Committee had on a previous occasion Finally, a statement and questionnaire come to the same conclusion. The proposals was prepared and sent to all supply under­ had to be dropped because the manufacturers takings. The results showed an overwhelming at that time could not produce a suitable majority against up-rating and in favour of a fused plug. That reason is no longer valid, new design with the fuse in the plug. and as to the objection that the Committee’s 4 0 6 E l e c t r i c a l R e v i e w S ep tem b er 21, 1945 proposal introduces a new standard, if we Since the word “ phase is already can never do so, as needs and methods associated with periodic functions of time, change, then indeed we have come to a would not a new word “ phasor ” be a good sorry pass. name for its diagrammatic representation ? Government Departments responsible for Diagrams using “ phasors ” might then be building quite properly insist on a reasonable termed phase-diagrams which actually quality of construction. To this end they describes them correctly. include in their general specification a list London, S.E.l. J. A. C o l l i e r . of British Standards for various building Date or Temperature ? materials. If they include B.S. 546 in this list, they will deny to themselves, and to the WWITHIN a few weeks the fuel economy users of the premises, the benefits that the drive will be intensified by the banning Study, Codes and Wiring Rules Com­ of industrial and domestic heating determined mittees have at different times tried to secure. by dates published in the press or broadcast My interest in this matter is only that, as a by radio; but this year and in future it user. 1 want the best the industry can give. seems that a much more efficient method On one side are a majority of the manu­ could be employed by regulating the initiation facturers and a very few users. On the other of fuel economy with an observed tempera­ side are the majority of the users and two ture as the basis instead of the date. highly reputable manufacturers who are After all, a great deal can in general be producing fused plugs as recommended by learned from those engaged in the branches the Study Committee. I have no doubt that of our industry specialising in the use of given a fair field other manufacturers will thermostats, time-switches, thoughtfully join them. The fused plug has come to designed heating, coolin&and air-conditioning stay and, if the B.S.I. will not at present equipment, and it is certain that the future give its support, we should at least take offers enormous opportunities for the utilisa­ care that no artificial barriers are erected to tion of automatic control gear both in prevent the use and development of so industry and in domestic life. useful a device. It is opportune, therefore, that a new London, S.E.l. Forbes Jackson. scheme for fuel economy operation, at least for heating, should be launched at the [We have received a letter from Major R. Amberton (Dorman & Smith, Ltd.) covering earliest possible moment, and it would be much the same ground. Major Amberton interesting to hear in this connection the concludes as follows:—“ No doubt the import­ opinion of others who have had specialised ance of the housing programme will be urged as a reason for adhering to B.S. 546 but it experience during the war years, coupled should be realised that the adoption of the with their future outlook. B.S.I. decisions involves the complete re-design Wembley Park, Middlesex. of the socket and plug with the sole exception of pin diameters and centres. Not only is S. H. P a r s o n a g e . this new design not available yet, but it will be Chief Engineers’ Salaries many months before commercial quantities can be produced. On the other hand the 3-kW W O T being the head of a borough electricity fused plug and socket asked for by the Study department I may reply impartially to Committee has been on the market for over a year and large numbers are already in use.”— the letter of “ M.I.E.E.” in the Electrical E ditors. Electrical Review.] Review of September 14th, and point out that there are aspects which he may not have “ P h aso rs ” considered. term “ electrical vector ” implies a In the first place, salary is unquestionably device so useful to the technician that linked with status, and in order to raise and surely it deserves a more accurate and precise maintain the status of engineering, especially designation. compared with that of merely secondary and A vector quantity is one which has both parasitic but better-paid professions, it magnitude and direction, but the diagrams is necessary to keep up the rate of pay. The used to represent alternating quantities are position of chief engineer is thoroughly concerned with magnitude and time. representative, the pay may be regarded as a It is specially desirable that a confusion of yardstick, and therefore his well-being is that terms should be eliminated in this con­ of all of us, both those more and less for­ nection. for many electromagnetic problems tunate, and should be our concern. involve the use of true directional space The reason why remuneration has to be vectors as well as the time variety. discussed in wartime is because attacks are September 2 1 , 1 9 4 5 E l e c t r i c a l R e v ie w 4 0 7

made on it in wartime. Members of certain be attached to road safety, and it must be borough councils do not put first things first, admitted that the railbound vehicle has proved but apparently have leisure to depress the pay beyond all doubt the safest means of trans­ and position of chief electrical engineers. port. Contrary to expectations the conversion That the latter have to resist in wartime is a from tramways to trolley-buses has resulted situation not of their choosing. in a considerable increase in the number of I note that “ M.I.E.E.” is a master mariner. fatal accidents, largely because the trolley­ Two or three years ago, when public sym­ bus can be steered at will, and at speed, close pathy was with the Merchant Navy, if to crowded footpaths. In 1943 the Belfast possible even more than with the Armed Transport Committee, confronted with this Forces, certain members of both Houses of problem, decided to divert three trolley-bus Parliament wished to take steps to ameliorate routes in order to reduce congestion in the the position and conditions of officers. city. Action, however, was cleverly side-tracked A well-planned modern tramway system, on the “ first things first ” excuse, and as a whilst involving a large capital expenditure, result, except in the case of a few very fine has enormous advantages, and a modern shipping companies, those improvements tramcar on a modem track is no noisier than may never mature. a modern bus. Although I am not a member Banstead, Surrey. W. C. K e n n e t t . of any association that champions the tram- Concerning Trams car, I regard the efforts of the Light Railway Transport League as a matter for congratula­ ■■AVING had twenty years' experience with tion and also for serious consideration by both tramcar and trolley-bus operation, transport committees throughout the country. I support Mr. A. R. Grierson's view that the London, E.Y1. “ P u s e t r a . ” modern trolley-bus is a better vehicle than the old worn-out tramcar, and I am sure that [In view of other claims on our space this correspondence is now closed.—Eds., Electrical Mr. Burrows and Mr. Kirkland would agree. Review.] Comparison is like that of an old paddle steamer with the Queen Mary. Re-employment of Civilians Mr. Grierson asks the purpose of con­ ^fO U R correspondent “ J.E.D.” (Electrical version from tramways to trolley-buses. It Review, September 7th) is justified in should be obvious that the capital expenditure feeling disgruntled over the present labour incurred with conversion is much less than it position and although there is no reason for would be for complete tramway reconstruc­ anyone now being penalised, the Ministry of tion. Experience has not altogether proved Labour and National Service still sticks to the trolley-bus to be more adaptable to narrow its red tape foolishness. streets than the tramcar. Also doubling the The war has proved that the majority of overhead copper and increasing the number engineers of fifty and over have equalled if not of poles does not enhance the appearance of excelled their younger compatriots. There any street. never has been any justifiable reason for With regard to noise, a modern tramcar on stipulating ages when applying for employees a worn-out track is bound to offend the ear. and it is to be hoped that employers will now I would emphasise the necessity of modifying look at this matter from a reasonable stand­ the conventional cross-section of tram rails, point. and of bedding them on a resilient compound. It is, of course, hopeless to expect the Whilst the economic aspect of a public Ministry of Labour and National Service to transport undertaking is of considerable alter its views and indeed it is hopeless to importance, good service with safety, com­ expect any Government Department to sub­ fort and cheap fares are what the public stitute common sense for red tape. requires and, indeed, has a right to demand. Glasgow. Alex. M ilne. With the prospect of all public service trans­ port coming under unified regional control, a long view on matters affecting the general Contact with Overhead Lines.—A mechanical navvy passing beneath some emergency cables policy to be adopted is imperative. at Blaenavon last week fouled the lines with We must plan to give the best possible its jib and a travelling ganger (John Dunkin) service to the travelling public and must not employed by Sir Robert McAlpine & Sons, allow vested interests to influence our who was walking beside the navvy, received a fatal shock. The driver of the machine was decisions on our plans for the future. unhurt but experienced a severe shock when he In my view far greater importance should dismounted. 40S E l e c t r i c a l R e v ie w September 2 1 . 1 9 4 5 Views on the \ews Reflections on Current Topics HOSE who constantly point out that the in a debate before the Manchester Engineering T public telephone, telegraph and postal Council a short time ago when Mr. S. services aren't what they were should guess the Ferguson, M.I.E.E.. put the case against reason for this. But if they cannot then a any immediate reduction and Mr. E. Jennison foreword by the Engineer-in-Chief of the represented the trade unions. G.P.O. (Col. Sir A. Stanley Angwin) to the July Post Office Electrical Engineers' Journal * * « may be referred to for their enlightenment. On one point they were in agreement: Sir Stanley mentions in the first place that that greater production per head could best during the war the Post Office lost about be achieved by greater mechanisation, 16,000 men of its engineering staff to the although this was regarded from different Forces and 300 to other departments : its angles. Mr. Ferguson seemed to concede a peacetime strength was about 50,000. With point when he said that man-hours are one its depleted numbers the Post Office has been thing and machine-hours another. If called upon to shoulder the heavy burden of workers' hours were cut down the machines providing and maintaining service for the must still be kept going, by an extension of numerous naval, military and R.A.F. estab­ shiftwork. Mr. Jennison regarded the shorten­ lishments in this country and for key in­ ing of the working w eek as the only means of dustries. On top of this, the Engineering avoiding displacement of workers by greater Department has rendered great assistance to mechanisation. I doubt whether any soundly- the Services in the design and production of based generalisation is possible in this matter all types of telecommunications equipment: for conditions vary widely from industry to the P.O. Research Station and factories have industry and even in branches of the same been almost entirely engaged in this work. industry'. There have been attempts at scientific study of the subject but the results » * * have not been conclusive. There is something in the complaint of Post Office Engineering Department em­ * * * ployees that the application of the term A councillor at Swinton was apparently “ skilled worker ” is not in consonance with referring particularly to electricity departments the importance of their work. They say when he said that local government officials that the immense strides made in tele­ moved " like grasshoppers ” from one job to communications. in the last few years have another. As a result of this, he averred, a called into existence groups of highly- 15-vear-old boy was “ in virtual control of specialised workers required for the con­ the drawing office, which deals with post-war struction and maintenance of extremely plans for the Electricity Department." intricate apparatus, such as automatic Passing over this infant prodigy to consider exchange plant, repeater stations, etc., on the general question, how can a member of an which modem telephony depends for its electricity authority's staff advance without efficiency. They are almost entirely recruited moving to another undertaking ? Under the from secondary schools and have "to reach a existing arrangements he reaches the maxi­ high standard of general and technical mum salary in four years and unless his education. It is feared that the term station is " up-graded.” a new post created, or “ skilled worker,” which is not so very somebody above him leaves, he “ stays put.v different from “ skilled labourer,” has un­ This may suit many men but those who are fortunate effects when pay and conditions anxious to improve themselves and widen are under review. their experience have to move on. And.

* * * after all. the electricity supply industry, considered as a whole, gains a good deal Opinions on the subject of the 40-hour from this system. working week are various. Broadly the trade unions favour the idea ; it was approved * * * at the Blackpool T.U.C. meeting last week. In last week's Electrical Review there was They say that far from reducing the pro­ an inadvertent reference to the British duction per worker, there would be improved S tandards Association. The old name of the results. Many employers (but by no means Institution dies hard and until the generation all) fear that any shortening of working which knew it as the British Engineering hours (without cutting wages) would merely Standards Association fades out, ” Besa ” result in higher costs and a lowering of this will be its familiar style. Who but a native country’s ability to compete in overseas ot one of the Balkan countries can properlv markets. These opposed views were aired pronounce “ Bsi ” ? - REFLECTOR. Septem ber 21,1945 E l e c t r ic a l R e v ie w 409

The Pari» Fair Domestic Appliance Ideas (from Our Paris Correspondent)

HE most surprising thing about the first specially designed brick which holds the heat, T Paris Fair to be held since 1940, is the so that during the day the radiator would give way in which manufacturers have managed to off its heat without consuming current. pick up the threads of the past. There are The Fair is filled with such radiators but plenty of new ideas such as one always expects a great many of them include new ideas to find at a Paris Fair and much of great such as the “ Isroc ” heat-storage cooker. interest to the electrical industry. Unfor­ Unlike most heat-storage apparatus the tunately there is not a great deal of business current is always “ on,” but as the loading is to be done because of the lack of raw' only 150 W, it is very economical. It takes twelve hours for the brick which holds the heat to reach 500 deg. C. at which tempera­ ture it remains with the current switched on. The heat can be regulated for cooking purposes other than roasting, and the oven is directly heated. The design of the “ Isroc” is simple; it comprises a series of bricks with resistances running through them, each brick being a separate unit so'that the cooker does not have to be put out of commission if one of the resistances fails. Round the block is a small tank which is warmed by the heat loss

“ Isroc ” heat-storage cooker materials. Exhibitors have pointed out that they will be ready to take orders as soon as they have the materials to produce their articles in quantity. Many told me that there is a slight improvement in supply and that it should not be very long before orders can be taken. At the moment one needs a permit to buy electrical apparatus, so the Fair is a grand window display and that is about all, but that is something considering what France has been through. Naturally most of the ideas are related to shortages and economy in materials, but nevertheless many of them will remain long after supply problems have been solved. One is struck, for example, by the number of heat storage radiators and cookers at the Fair. These heat storage appliances made great headway during the war. They enabled the public to warm their appartments at a time Combined heater and radiator (Damond) when there was no coal and precious little electricity during the day. At night, during which cannot be avoided in spite of the the low-load hours, there was sufficient glass-silk insulation. This is sufficient to heat electricity available to heat up the cement or water in the tank up to 70 deg. C. The cooker 410 E l e c t r i c a l R e v ie w Sep tem b er 2 1 , 1 9 4 5 comprises one regulable hotplate and a boiling; when it is turned over with the re­ directly-heated oven. sistance below, that is, forming the top of the The same company has a storage-heat oven, it can be used for baking. The advantage 2,700-W radiator. It, too, employs the special is this, one starts boiling, then, when the food refractory which holds the heat. The system is sufficiently advanced, the hotplate and its is more or less the same as that of the cooker. resistance are reversed and used to heat the G. Chanson is showing resistances enclosedoven, the boiled foods remaining on top and in “ Pyrex ’’ glass. The advantages of these being kept warn) by the upward heat loss. seems to be that one can have the resistances The “ cuisinette ” weighs about 14 lb. and screwed into the walls without any other has a loading of only 980 W. frame, thus providing a glass radiator. E. Damond is showing a combined radiator Further, the firm is turning out innumerable and heater. It has the shape of an ordinary glass ornaments all of which have resistances radiator with the 3,000-W resistances running running though them and thus are radiators. round it while the centre is composed of For example, in an ordinary fan, a series of shelves on which coffee or tea or toast can be resistances has been enclosed in glass in front kept warm. The lower shelf, being above of the blades so that in winter, the fan can be the resistance can be used to boil water. used to blow hot air into a room. There is not much big material worth The Creations Emede include a “cuisinette” mentioning at the fair because people are which is very ingenious. Again, it has been particularly interested in their personal com­ constructed to meet the problems of the hour. forts, and for obvious reasons. Further, Very small in design, it is, in effect, an oven there are few foreign exhibitors. Great with a hotplate. The hotplate, however, can Britain is represented by a combined be turned over; thus when it is in one position, organisation called the Anglo-French Distri­ with the resistance on top, it can be used for butors which includes McCarthy Radio.

I.M.E.A. Activities Celebration of Jubilee

year the Incorporated Municipal bus operation and of the experience gained in Electrical Association reaches its fiftieth recent times with systems of modern type, year and it is proposed to celebrate the jubilee their Joint Electricity Distribution and Collec­ in a fitting manner at next year’s convention tion Committee desires to discuss the question (the first since 1939) arrangements for which of formulating some recommendations regarding are now proceeding. power supply for the assistance of the con­ stituent undertakings of the two associations. Meter Inaccuracy Acceding to this request, the I.M.E.A. It has been suggested to the Council that Council has appointed Messrs. J. Eccles (Liver­ steps should be taken to secure an amendment pool), F. W. Lawton (Birmingham), W. A. of Section 3 of the Electricity Supply (Meters) Royle (Sunderland), R. A. S. Thwaites (Man­ Act, 1936, to provide that the meter examiner chester) and J. W. J. Townley (West Ham) shall declare the degree of inaccuracy of a to serve on the sub-committee which is being meter at the time of test and that this declared set up. inaccuracy shall be taken as the inaccuracy during the period of dispute of an account, or, Lighting Education alternatively that the examiner shall declare Co-operation between the Association and the extent of the inaccuracy during that period. the Electric Lamp Manufacturers' Association It is considered that the examiner’s decision is continuing through a joint committee and at should be binding; this would obviate resort to a recent meeting the chairman referred to plans the Courts. The Council has agreed that it for lighting education which E.L.M.A. has in might be advisable to secure this amendment mind. It is proposed to revive the illumination and is considering the matter. courses for the electrical industry, one refresher Power for Trolley-buses course being projected for the autumn and one, for architects, in the spring. It is E.L.M.A.’s The I.M.E.A. Council has been approached aim to make courses available in the principal by the Public Transport Association and the provincial centres and to ensure that lighting Municipal Passenger Transport Association and vision are dealt with in schools. E.L.M.A. with regard to the supply of power to trolley-bus has accepted a suggestion that it shall provide systems. The two associations state that in demonstrations and equipment for the purpose view of the possibility of an extension of trolley­ of lectures in supply authorities’ showrooms. September 21, 1945 Electrical Review 41 IIC Hilling Equipment Flameproof Conversion Plant

€ iOAL-FACE machinery received from the The 15-kW motor-generator comprises a United States under lend-lease arrange­ medium-voltage three-phase squirrel-cage ments was arranged for DC operation and motor driving, through flexible couplings, a the Ministry of Fuel and Power instructed fan-cooled shunt-wound generator. The Metropolitan-Vickers Electrical Co., Ltd., to motor is supplied by a flexible armoured t.r.s. design at short notice automatically operated cable connected to a 100-A bolted plug and flameproof conversion plants of three sizes. socket and the generator (132 V at 2-75 V per Two of these were to be of 15 and 20 kW for cell) has an outgoing armoured cable con- charging the batteries of trackless vehicles used for transporting coal from the face to the loading points on the main trunk belts or haulages and the third of 75 kW for supplying the coal-face machinery. The motor gener­ ators were to be mounted on common fabricated bed-plates unsupported by founda­ tion blocks and with adjustable pads to enable the user to fit his own wheels, axles and bearing blocks for track gauges of from 1 ft. 8 in. to 2 ft. 4 in.

Control panel, with covers removed, for battery charging,and (right)flam e- proof resistances, resist­ ance links and voltage r e g u la to rs

nected to a sealing box with armoured clamps of the pin-disconnect­ ing type. Overall dimensions of the 15-kW size are 6 ft. Provision had, to be made for charging in 10 in. by 2 ft. 8 in. by 3 ft. high. Control parallel two batteries, each composed of two gear consists of a contactor direct-on starter series banks of twenty-four lead-acid cells, with over-current and under-voltage pro­ with capacities of 330, 385 and 440 A at a tection housed in two compartments and a six-hour discharge rate. A modified con- charging panel made up of four DC line con­ stant-voltage control system was adopted as tactors, overload and interlocking relays, cost, weight and dimensions were more two battery-charge timing relays and two favourable with this arrangement than with ammeters and a voltmeter. A second com­ current c o n t r o l . partment on the charging panel contains a E l e c t r i c a l R e v ie w September 2 1 . 1 9 4 5

voltage regulator and the terminal board for completion of charging a cam on the timing the ballast resistances and change-over links disc-shaft engages a peg or. the mercury for selecting the resistance sections appropriate switch and tilts it. thus tripping the line con­ to the three sizes of batters . tactor. The voltage regulator includes a spring- Glands fitted to the outgoing cable to the loaded moving arm. pivoted on knife edges, batteries take twin-core, circular, t.ris. cabte which carries carbon contacts at one end and up to li in.. while interlock and auxiliary a moving coil at the other. Two fixed coils supply connections from the motor starter are connected in series with the moving coil panel to the DC panel are carried in conduit and across the generator terminals is a fitted with sealing stopper boxes. swamping resistance to reduce the effect of The 500-Y generators of the ~5-k'V sets, the temperature coefficients of the three coils. which are driven by squirrei-cage motors, At the regulated voltage the solenoid effect have slip rings for use with oil-immersed balances the spring pressure. The vibrating static balancers to give artificial mid-points contacts are arranged to v ary the shunt-field which are connected through leakage relays of the generator. to earth. Overall dimensions of each set are The timing relay consists of three parts, a 9 ft. 7 in. by 3 ft. b in. by 4 ft. 3 in. high. The voltage-measuring element, a mercury switch, weight with bed-plate is 54 tons. and a small synchronous motor with graduated Starters for the AC motors were already timing disc. The first is a hot-wire vacuum provided. The generator control apparatus switch with its control circuit connected consists of a DC contactor circuit-breaker across each battery ; it is not subject to con­ housed in a flameproof enclosure and tact bounce and a delay prevents response to equipped with two over-current releases, momentary voltage surges. When the battery earth-leakage relay and isolator. Lnder- voltage reaches 2-35 per cell the hot-wire voltage protection is derived from the switch closes the circuit for the synchronous operating coils of the contactor mounted on motor and sets the timing gear in motion. On the same bed-plate as the static balancer. ( oiubatiiig* Ma§:uetic Jliue* Degaussing M ethods for Protecting Ships

■•IGHT up to the end of the European type operates- Mine-desintction ships »ere war, the enemy was using magnetic therefore magnetised strongly enough to cause mines, and “ degaussing technique " had to be mines to explode at a safe distance. When it modified continually to counter such fresh de­ was reveaied that heavy damage cbuld be caused velopments as increasing sensitivity. Evamina- by- mines laid on the sea bed at considerable tion of the first mines of this type in November. depths, experiments were undertaken which 1939, indicated a remedy in the demagnetisa­ proved that the vertical field unde"- a ship tion of ships' hulls. Official information now could be substantially reduced by demagnetising released is to the effect that Admiralty work the hulls. Heavy copper strip was fastened in this field dated from 1917. with the devising round the outside of the ship in rubber chan­ of methods for the detection and firing of mines. nelling. but later the coils were fitted inside the Later investigations showed that the magnetic hull. Changes of effective field proved to be field of a steel ship at the relevant distance proportional to the current in the coils, hysteresis could be accurately calculated by assuming the was negligible and the permanent magnetism hull to consist of a row of vertical dipoles, a was not changed by prolonged running with row of horizontal lathwartshipl dipoles and a the coils in circuit. longitudinal dipole of length rather less than " tpirtg with current-carrying conductors to that of the vessel. It was also shown that the cancel induced vertical magnetisation over a longitudinal magnetism consisted of a wide area w as tried successfully in 1940 and was " permanent " component, w bich did not v ary used at Dunkirk. The magnetism, however, with the ship's heading, and an induced com­ gradually decayed and the work of rewiping ponent, which varied from zero on an east-west restricted the number of merchant vessels that heading to a maximum that was roughly pro­ could be so treated. By the end of that sear portional to the earth's horizontal field on a 1.704 warships and 4.400 merchant ships had north-south heading. been fitted with degaussing coils. The current Betore that time chief consideration was gtien in the coils had to be adjusted to suit the value to buoyant mines and it appeared unlikely of the earth > magnetic field in different latitudes. that ships could be demagnetised sufficiently Rapid developments in underwater magneto­ to protect them at the short ranges at w hich this meters aided the work. September 2 1 , 1 9 4 5 E l e c t r i c a l R e v ie w 4 1 3 CORRERCE and INDUSTRY Atomic Power Stations. E.D A. Conference at Scarborough.

Coal Nationalisation manager, Hull). On the first day there will be a reception by the Area chairman, Mr. A. G. ^¿PEAKING in Glasgow on Monday, Mr. E. Connell, M.I.E.E., and a civic welcome by the Shinwell, Minister of Fuel and Power, said Mayor of Scarborough and on the second dav that the Government w as “ in deadly earnest ” the delegates will be entertained to lunch by about the nationalisation of the coal-mining the Scarborough Electricity' Committee. industry and meant to pass the necessary measure as soon as possible. He said that there Lamp Price Reductions were other forms of fuel and power, gas and electricity for instance, which should be re­ The Electric Lamp Manufacturers’ Associa­ organised. tion announces that it is prepared to make allowances direct to retailers without agreement Future of Atomic Power for the difference between the old prices and the new prices instituted on July 16th. Claims A prediction that power stations employing should be made on a form available from the atomic energy would be in operation within ten Association up to October 3rd. years was made this week by Professor M. E. Oliphant at a meeting of the Birmingham Electrical Company’s Fire Rotary Club. Professor Oliphant is Poynting Professor of Physics at Birmingham University Extensive damage, including the destruction and a member of the technical committee of a quantity of electric fans, was caused by a responsible for the development of the atomic fire at the Tyseley (Birmingham) premises of bom b. Berkeley & Young, Ltd. It is reported that some of the equipment destroyed was designed Lochaber Rating Claim for export and some was for Government Departments. A claim by the Lochaber Power Co. for a reduction in the rateable value of its under­ Lighting Restrictions taking was rejected last week by the Lochaber District Valuation Appeal Court. The company The Ministry of Fuel and Power has issued a had proposed a rateable figure of £33,172 reminder that all forms of floodlighting, against the assessor’s £51,204. It is appealing decorative or display lighting are at present against the Court’s findings and has asked for forbidden in view of the need for conserving a case to be stated. fuel. Miniature Meters Contractors’ Plant Decontrolled A range of indicating voltmeters, ammeters, After September 30th, all types of contractors’ milliammeters and microammeters which are plant may be purchased without a “ permit to only one inch in diam eter and weigh 1 -25 oz. purchase ” from the Ministry of Works. Pros­ are being produced by an American manu­ pective purchasers should, therefore, place their facturing concern. The instruments are her­ orders direct with manufacturers. metically sealed in anodised aluminium cases and are suitable for numerous applications to Contract Price Adjustment Formulae aircraft and portable equipment. The latest figures for the B.E.A.M.A. contract Shanghai Power Co. price adjustment formulæ are as follows :— (a) The rate of pay for adult male labour at The Washington correspondent of The Times September 8th shall be deemed to be 95s. ; reported on Monday that the Shanghai Power (b) Costs of material : the index figure for Company’s property had been restored tp its intermediate products last published by the American ow ners. The future of the American- Board of Trade on September 8th is 182-5 and owned Shanghai Telephone Co. is still the is the figure for the month of August. Both subject of negotiations. figures are unaltered. Bristol Exhibition E.D.A. Area Conference A number of electrical manufacturers parti­ cipated in an exhibition arranged by the Bristol Three papers are to be presented at a two-day Engineering Manufacturers’ Association at the conference at Scarborough (September 26th Victoria Rooms. There were over 40,000 and 27thj, arranged by the Committee of the visitors; many of them came from potential Mid-East England Area of the British Electrical markets for British engineering products. Association (Area officer, Capt. A. W. Brown, M.B.E., Britannia House, 74, Wellington E.A.W. Birmingham Branch Street, L eed s, 1). T hey are :— “ Post-W ar Problems of Domestic Electrical Development,” Presentation of a cheque for £100 to help by M r. D . Bellamy, O.B.E. (general manager, towards the creation of a scholarship trust in Hull Electricity Dept.); “ Publicity, and electrical housecraft was the chief feature of the Advertising, by Mr. W. K. Fleming, M.I.E.E. twenty-first birthday celebrations of the Electrical (borough electrical engineer, Scarborough); Association for Women held in Birmingham on and “ Large-Scale Cooking and Heating,” by September 13th. It was the Birmingham and Mr w. H. Dunkley, B.Sc. (deputy general District Branch’s twentieth birthday. The 414 E lectrical R eview September 21, 1945 cheque was presented from the Branch lo Miss Caroline Haslett, director of the Association, TRADE MARKS A luncheon preceding the afternoon meeting, FB3HE following applications have been made which was addressed by Miss Haslett, was for trade marks. Objections to any of attended by the Deputy Mayor of Birmingham these may be entered within a month from (Alderman L. G. H. Alldridge) who was September 12th:— presented with a cheque for £500 from the A r m e l e c . N o . 6 3 5 , 0 7 9 , Class 7 . ^Electric Branch as a gift to the Lord Mayor's Services washing machines.—Heating Construction, Ltd., Victory Fund. The money was raised from the sale of the Branch's mobile canteen. 41, Walsgrove, Great Witley, Worcestershire. H a r m e t . No. 634,921, Class 9. Electrodes Dissolutions of Partnership for use in welding.—Padley & Venables, Ltd., Dominion Steel and Tool Works, Hill Street, Leather & Strong.—B. Leather & H. C. T. Sheffield, 2. Strong, carrying on business as electrical engineers and contractors at 251, Fulham Road, A d m i r a l . N o. 628,500, Class 11. Electric Queen’s Elm, Chelsea, S.W.3, have dissolved refrigerators, freezing apparatus, electrical waffle partnership as from August 31st. Debts due to irons, electric toasters, electric heating pads, and owing by the firm will be attended to by hotplates, stoves, electric air conditioning Friend-James, Sinclair & Yarnell, C.A., 31, apparatus and installations, and electric lamps. Kingsway W.C.2, and the business will be —Admiral Corporation. Address for service is, carried on by Mr. Strong under the same style c/o Stevens, Langner, Parry & Rollinson, and at the same address. 5 to 9, Quality Court, Chancery Lane, London, W.C.2. To be associated with No. 570,699 S.P.L. Radio & Electrical Repairs.—W. E. (3058) vii and others. Sullivan and J. P. Sanders-Parks, trading under this style as radio and electrical engineers at High Road, Laindon, Essex, have dissolved partnership. Debts will be attended to and the INFORMATION business continued by W. E. Sullivan. DEPARTMENT Cable Laying by Plough ^MENERAL inquiries from readers relating ” to sources of electrical goods, makers’ The inscription of Fig. 2 of the article on addresses, etc., are replied to by our Information this subject in last week’s Electrical Review was Department through the post. Inquiries incorrect. Operation in hard ground was should be accompanied by a stamped addressed depicted in the left-hand illustration and in envelope. soft ground on the right. Our extensive records enable us to reply to most queries, but occasionally we ask for our Trade Announcements readers’ assistance in tracing names and addresses not known to us. We should be glad As from October 1st the address of the to have such information regarding the Plymouth branch of the Simplex Electric Co., following:— Ltd., will be 53, Southside Street, Plymouth Makers of “ l.R.L.” switches and plugs. (telephone : Plymouth 4095 ; telegrams : Simplex). Comprehensive stocks will be carried. All communications to Eltron (London), Ltd., should in future be addressed to Accrington Export Inquiries Works, Strathmore Road, Croydon, Surrey. E have received the undermentioned After this week the address of Alex Lawrie & inquiries from firms and individuals Co., Ltd., will be 8-10, Brown’s Buildings, St. overseas who wish to secure agencies for British Mary Axe, London, E.C.3. electrical equipment and appliances or to import The Battery Service Co. (Mitchell & Reid, them into their territories. We shall be glad to Ltd.), Langton Road, Tunbridge Wells, informs pass on to them replies received from readers us that it is extending its activities to electrical which should be addressed to the Editors, factoring and wishes to receive manufacturers’ quoting the number given in parentheses. We catalogues, etc. cannot vouch for the standing of inquirers and Straight-Lite Reflectors, Ltd., have returned manufacturers replying to them will no doubt to their London address, 73, Canonbury Road, require the usual references :— London, N.l (telephone: Canonbury 5675). The London office of McClure & Whitfield Southern Rhodesia.—Sole agencies wanted for is now at City House, 158, City Road, E.C.l. domestic appliances, electrical accessories, in­ The head office joint works department of the dustrial motors, switchgear, transformers, in­ Associated Portland Cement Manufacturers, dustrial lighting equipment and automatic water Ltd., and the British Portland Cement Manu­ heaters. (X.115). facturers, Ltd., is now at 192, Ashley Gardens, London, S.W.l (telephone: Victoria 6677; India.—Importers wish to get into touch with telegrams: Portland, Sowest, London). suppliers of a wide range of goods including refrigerators (domestic and commercial), fans, Change of Name cooking equipment, radio apparatus, lamps, The Second Electric Supply Corporation, sterilisers, wires and cables. (X.l 16). Ltd., Brook House, Park Lane, W.l, has Syria, Lebanon, etc.—Agencies required for changed its name to Electric Supply Cor­ the sale of electrical goods in Syria, I ebanon poration (Overseas), Ltd. Transjordania and Palestine. (X.l 17.) surfaces to be bonded must be treated, except Industrial Equipment w hen wood is one of the surfaces, abrasion being rH 'H E British Electrical dc Allied Manufacturers' then unnecessary . .Association has informed members that in W hen the surface film has been removed the consequence of the Control of Industrial Elec­ abrasive mixture should be wiped off and the trical Equipment 'No. 4> (Relocation* Order. prepared surfaces are then in an active con­ 1945. it is no longer necessary for an acquirer to dition. which will ensure a strong bond when obtain a licence before placing an order for any they are finally cemented. Surfaces so treated industrial electrical equipment. will retain their activity' for some weeks, but it is A system o f" selective control." similar to that preferable to do the bonding within a week. now applying to metal-working machine tools, has been introduced to cover Service and other essential requirements for certain items where Trade Publications the supply position does not permit of complete K.L.M.A. Lighting Service Bureau. 2. Savoy relaxation of licensing. These items appear on a Hill. London. W.C.2.—Illustrated booklet " nominated list " and orders for them can onK recapitulating salient technicalities of street be accepted by suppliers under the authoritv of lighting and summarising the requirements for a supply licence issued by the Machine Tool main traffic routes. Also technical supplement Control, except where the transaction is covered (No. 11 containing technical and design data by one of the exemption clauses. The present with servicing notes on fluorescent lamps for nominated list comprises DC motors, DC and industrial uses. AC generators, static power-factor correction British Thomson-Houston Co.. Ltd.. Bridle condensers and automatic voltage regulators. Members of the Electrical Industry' Export Path. Watford Junction, Herts.—Folder Groups have been notified of changes in pro­ I - 766 M containing illustrations, brief specifica­ cedure consequent upon the revocation of the tions and prices of " Mazdalux " lanterns for rural and urban street lighting. Five types are Control of Industrial Electrical Equipment covered. Orders. It will no longer be necessary for the official Group Form of Notification to be used Reliance Telephone Co.. Ltd.. 39, Parker Street, to obtain D.I.E.E. authorisations to supply for Kingsway. London. W.C.2.—Leaflets on press- export any industrial electrical equipment. button and automatic dial intercommunicating Iron and steel authorisations will still be issued telephones; also loud speakers and radio- by the Electrical Industry' Export Groups for gramophone amplifying equipment for industrial industrial equipment for export which is not and commercial premises. covered by the D.I.E.E. bulk allocation. In the E. H. Jones 'Machine Tools*. Ltd.. Edgware case of equipment in the nominated list No. 1 Road. The Hyde. Hendon. London. N.W.9.— the reference number of the D.I.E.E. supplv Leaflet descriptiv e of the Newall model " O " licence must be quoted on the BT.4 application boring head, which is smaller than the first form. model and adjustable while running in half­ In a letter to members of the Electrical Con­ thousandths of an inch, with a travel equivalent tractors’ Association, the director (Mr. L. C. to i in. increase on the diameter of the " w ork ” Penwillt emphasises that the restriction repre­ for bores ranging from 4 to 14 in. sented by the nominated list applies only to Rubber Bonders. Ltd.. Flexilant Works. manufacturers: it is incumbent upon them to Dunstable. Beds.—Illustrated commentary on submit details to the Ministry of Supply for the rubber bonded to metal in various ways for issue of a permit. Contractors w ho are licensed many different purposes, prepared with the by the Ministry to carry a stock of the equipment object of Unking wartime experience with concerned should so inform manufacturers w hen peacetime apphcations to aid designers. desiring to replenish their stock. Hopkinsons, Ltd., Huddersfield.—Folder (No. 4503) illustrating typical examples of steel cast­ ings, which the firm produces in large quantities Bonding Plastics from about 20 lb. to 2 tons in weight. AppUcants for copies of the above should N the fabrication of laminated or moulded wiite on their firms’ business notepaper. phenolic or urea products the lack of a Icement for permanent bonding without the necessity of using heat has now been over­ come by a simple technique worked out by News from Australia Bakelite. Ltd. The method consists, briefly, in HE W estern Australian Minister for W orks abrading the surface to be bonded in the presence (Mr. Hawke) has announced that the main of a solution of a special phenolic resin before Trecommendations contained in the report of the applying the appropriate cold-setting cement. Electricity Advisory Committee on the south­ This new process has simplified the fabrication west national pow er scheme have been approved bv bonding of phenolic or urea laminated sheet. by the State Government. The proposals mouldinssT cast resins and impregnated wood, include the erection of two generating stations either to similar materials or to wood. In and interconnection with the Perth-South general the nominal shear stress decreases Fremantle system. The Government will with increase in overlap, and increases with introduce the necessary legislation during the increase in thickness. coming session of Parliament. The surfaces to be bonded are abraded in The W'.A. Industry Expansion Commission the presence of Bakelite activating solution. and the Perth Chamber of Manufactures J 11180. by nears of a wire brush, scraper, or recently met to discuss the possibility of expand­ abrasi e paper, or cloth, either by hand or ing the manufacture of electrical goods. It mechanically. The surface film must be com­ was decided that members of the Commission plete^ v r e m o -ed in the abrasion process and both should inspect local plants in order that they 4 1 6 E l e c t r i c a l R ev t e w September 2 1 . 1 9 4 5

might acquaint themselves with the character (Mr. J. S. Murray) that the c o m p a n y h ad sole of existing equipment and needs for further right by Act of Parliament to control its share expansion. issue and dividends, and that in his considered The Sydney County Council Electricity opinion such right should not be taken away Department is conducting a comprehensive except for some good cause. No such cause had publicity campaign, advocating the installation of been proved, he contended; in fact, good reasons at least eleven power points in all new homes— had been produced for allowing the company three in the living room, two in each bedroom, to continue. one in the dining room, four in the kitchen and Now that no permits for electric radiators are one in the laundry. required these have been selling freely. Electric The Royal Commission which is investigating irons are still almost unprocurable, but a new the affairs of the Adelaide Electric Supply Co.. line which has had much success is a baby’s was recently told by the company's chairman electric bottle-warmer offered at 63s. Overseas Eleetrleal Trade Returns for First Half of 1945 r| ’HE accompanying table is compiled from be taken into account in assessing the relative figures published by the Board of Trade volume of equipment sent out. Goods for the (“ Accounts Relating to the Trade of the relief and rehabilitation of liberated Europe United Kingdom during January-June. 1945." are included in the figures and have a consider­ Stationery Office, price 2s. 6d.). It will be seen able bearing on the fluctuations. It is proposed that the total value of electrical exports to publish details of the destinations of exports (£12.206,472) was £1,988,731 less than in the in our next isjue. corresponding period of last year. As a Imports of electrical equipment were largely measure of comparison with pre-war trade, expanded, the total for the first half of this year the value exceeds half of the total for the year (£14,799,148) comparing with only £1,892.919 1938 by £1,321,778, but the rise in costs must for half of 1938.

Exports Imports Class Jan.-June. Inc. or Dec. on JarL-June Inc. or Dec. on 1945 Jan.--June. 1944 1945 Jam-June. 1944 £ £ £ £ Telegraph and telephone wires and cables (submarine) 198.674 992! 18 A Ditto (not submarine) 494,734 — 86,019 | Wires and cables other than telesraph and 983315 _ 811341 telephone (rubber-insulated).. 598.289 — 303.441 I Ditto, insulation other than rubber 625.377 — 1132174 Radio receivers (not radiograms) 45.952 j -- 24.456 ' 249.672 _ 591.868 Transmitting apparatus 202.018 -- 398.815 * Valves 471.811 — 349.810 589.342 — 128035 Other radio parts and accessories 240.065 -- 233,751 7.470JSS a_ 3.455324 Telegraph and telephone apparatus other than radio 1.112.459 -j- 228.034 601.642 241.614 Electric carbons ♦ — 5S.399 _ 318.173 lam ps 375.982 ■f 68,818 186.055 — 161 >92 Other lighting apparatus 197394 4- 548 147,846 “_E_ 93.824 Pnmarv batteries 63306 — 12,784 219,310 123.655 Accumulators (portable) 186.158 -C 39,652 Ditto, stationary 18311 — 80.061 * _ Ditto, parts and accessories 68.726 — 3.045 » _ Electric cooking and heating apparatus 78.729 4- 18.073 * _ House service meters 47.469 3,058 * Other electrical instruments (not teleeraph and telephone) (22 632 — 102198 171.412 75.724 Insulating materials n.e.s. 139390 4- 16.481 * Unclassified electrical goods and apparatus .. 6812165 — 121.612 2,149 239 r 1.745.447 Generators up to 200 kW 3122-42 — 133 >3-4 * D itto, over 200 kW 436.679 — 637,251 ♦ Motors 904305 j 4- 153235 51,418+ 42315 Converting machinery 9.085 4- 6.542 Transformers for lighting, heating and power. including coils 663.166 — 207.722 * Rectifiers for power-house use 29.796 4- 17.571 * Motor starting and controlling «ear 180.467 11.129 * Switchgear and switchboards other than tele­ eraph and telephone 1.228.480 436.329 * Other electrical machiner. 2.348.066 380.631 1.920.89 ! 172.911 Electric vacuum cleaners 5.152 3.875 289 ■*89 Other electrical I v operated portable appliances 17233 4,950

Total £ i 2-206.472 —£1,988,731 £14.799.148 — £3.595.072 * Not separately classified, f Not railway and tramway motors. September 2 1, 1945 E l e c t r ic a l R e v ie w 417

W e l d i n g - S u p ¡ > l i e * Metering Phase-to-Phase Loads

By A. G. Beech, B.Eng., a.m .i.e.e.

HE war brought about a considerable installed the trouble will not usually be T increase in the number of 400-V experienced, as the existing phase-to-neutral welding plants installed in small workshops, loads will probably swamp the superimposed garages and factories where the metering welder load. Reports of backward running consists of single-phase meters connected may, however, be received when the meter in each line, and it is frequently observed and reported by meter readers that one meter is running backwards. Consider the welder alone (Fig. la). It is clear from the vector diagram that the current in the “ red ” meter will have a negative component if is greater than 60 deg. (i.e., power factor of welder less than 0-5 lag). As this is very frequently the case with welders, the net registration of one meter over the whole quarter may be negative. This effect is most often noticed where the supply was previously single-phase at 230 V and an extra phase has been brought in solely to supply the welder. In the case shown in the diagram it is the “ red ” meter which will reverse. The “ blue ” meter will register forwards for all possible values of which cannot exceed 90 deg. lagging. Negative Recording The view is sometimes expressed that the meter which records negatively should have its connections reversed so as to make it run forwards. This is not correct, and the true consumption is obtained by taking the algebraic sum of the readings with both meters connected normally; e.g., if one meter reads 100 kWh forwards and the other 25 backwards, the true consumption is 75 kWh, and not 125, the figure which would be obtained by reversing the negative meter. Fig . I This can be proved by reference to Fig. lb. True power (assuming sinusoidal currents reader’s visit happens to coincide with a and voltages) = Vrb I cos = V3 V I cos 6 period of light load when only the welder is (V == phase voltage). Power recorded on working. “ red ” meter = V I cos (30° + ) (negative if >60°). Power recorded on “ blue ” meter = Institute of Fuel V I cos (30° — 4)- Total recorded power XtH E annual luncheon of the Institute of = V I {cos (30° + 4) + cos (30° — <£)} = Fuel is to be held at the Connaught v/3 V I cos i>, which is the true power con­ Rooms, Great Queen Street, W.C.2, on October sumed for all values of o. 17th. Dr. E. W. Smith will preside and the If “red” meter is reversed, recorded pow er= principal guest will be Mr. E. Shinwell, Minister of Fuel and Power. The Melchett Medal for { - cos (30°_ + 4)} = V I + 4) cos (30° - 1940 is to be presented to Monsieur Etienne V I sin 4, which is obviously incorrect. Audibert and the 1945 Medal to Dr. C. H. W here three-phase supplies were already Lander, C.B.E. 418 E l e c t r ic a l R e v ie w September 21. 1945 I.E.E. Programme First Half of 1945-46 Session

WkETAILS of the programme of papers, chairman; subjects for later meetings are as etc., for the first half of the new session follow s :— have been received from the Institution of November 1th.—“ Radio Measurements in Electrical Engineers. At the first meeting, on the Decimetre and Centimetre Wavebands,” by R. J. Clayton, Dr. J. E. Houldin, Dr. H. R. L. October 4th, Dr. P. Dunsheath will deliver his Lamont and W. E. Willshaw. presidential address, and the remainder of the Novem ber 21 st.—“ A Method of Increasing ordinary meetings are as follows:— the Range of V.H.F. Communication Systems October 18th.—Discussion on “ Weather and by Multi-Carrier Amplitude Modulation,” by Electric Power Systems,” to be opened by J. R. Brinkley. J. S. Forrest, H. W. Grimmitt, A. J. Drummind November 21th. — Discussion meeting and Wing-Cmdr. R. M. Poulter. (Joint meeting (particulars to be announced later). with the Royal Meteorological Society.) December 5th. — “ The Design and Use of Novem ber lit.—Paper on “ Practical Aspects Radio-Frequency, Open-Wire Transmission, of Telephone Interference Arising from Power Lines and Switchgear for Broadcasting Systems,” Systems,” by P. B. Frost and E. F. H. Gould. by F. C. McLean and F. D. Bolt. Novem ber 15r/i.^Parsons Memorial Lecture, December 1 \th. — Discussion meeting (par­ “ High-Voltage Research at the National ticulars to be announced later). Physical Laboratory,” by R. Davis. January 16th.—“ A Standard of Frequency December 6th.—Paper on “ The Electrical and its Applications,” by C. F. Booth and Engineering Industry in After-War Economy,” F. J. M. Laver. by G. L. E. Metz. Other meetings on January 22nd, February January \lth.—“ Some Notes on Trans­ 6th and 26th, April 3rd and 16th, and May 1st former Practice with reference to Standardisa­ and 21st. tion,” by A. G. Ellis. Transmission Section Particulars of the further ordinary meetings of Mr. E. T. Norris, the chairman, will deliver the Institution to be held on February 7th, his address on October 17th and other meetings March 7th and April 4th will be announced will take place as follows :— later.- The thirty-seventh Kelvin Lecture will November 14th.—“ Recent Progress in the be delivered on April 25th and the annual Design of the High-Voltage Lines of the British general meeting is to be held on May 9th. Grid System," by W. J. Nicholls. Installations Section December 12th.—" Mechanical Stresses in Transformer Windings,” by Dr. Ing. E. Billig. Mr. Forbes Jackson will deliver his inaugural January 9th.—“ Steel Tower Economics,” address as chairman of this Section on October by P. J. Ryle. 11th and the following papers will be read at Other meetings are to be held on February subsequent meetings :— 13th, March 13th, April 10th and May 8th. November 8th.—“ Street Lighting,” by E. C. Lennox. Informal Meetings December 13th.—“ Mineral-Insulated Metal- October 19th. — Discussion on “ Should Sheathed Conductors,” by F. W. Tomlinson Engineering Concerns be Managed by and H. M. Wright. Engineers?”, to be opened by the President. January 10th.—“ The Control of Electrical At later meetings the following subjects will be Installation Work,” by W. R. Watson. discussed :— Further meetings are to be held on February November 26th.—“ Standardisation of Ripple 14th, March 14th, April 11th and May 2nd. Control,” to be opened by T. R. Rayner. Measurements Section January 14th.—“ Country Road Lighting,” to be opened by C. R. Bicknell. The inaugural address of the chairman, January 28tli.—“ Electrical Aids to Coal Mr. S. H. Richards, will be presented at the Production,” to be opened by R. Crawford. opening meeting on October 26th; subsequent Further meetings are to be held on February meetings are as follows ;— 25th, March 25th and April 29th. November l'ire!.—Paper on “ The Influence of Irradiation on the Measurement of Impulse Voltages with Sphere-Gaps,” by Dr. J. M. International Bibliography Meek. rB^HE opening meeting of the session of the December 14th.—“ A Precision AC/DC Com­ * British Society for International Bibliography parator for Power and Voltage Measurement,” will take place on October 16th, at the I.E.E. by G. F. Shotter and H. D. Hawkes. Dr. S. C. Bradford will be inducted as president January 25th.—Discussion on “ Instruments and will deliver his address on “ Fifty Years of for Special Purposes,” to be opened by R. W. International Documentation,” after which Eng. Griffin. Çdr. D. Hastie Smith, R.N. (ret.) is to open a Further meetings:—February 22nd, March discussion on “ The Technique of Making 22nd, April 24th and May 24th. Abstracts of Scientific and Technical Papers.” Radio Section The programme for the session includes a paper by Mr. A. E. Tooke, B.Sc., A.M.I.E.E., on At the first meeting on October 10th, Mr. “ The Information Bureau of the Electrical A. H. Mumford will deliver his address as Research Association ” (December 4th). September 2 1, 1945 E l e c t r ic a l R e v ie w 419 E L E iT R H il l S I P P L I Ulster Extension Plans. New Croydon Station.

Altrincham. — Extension of Time. — The Croydon.—Commencement of New Station. Corporation is to make application for an —The Minister of Fuel and Power (Mr. E. Order extending the period within which it Shinwell) is to cut the first sod on the site of the may exercise its rights of purchase of so much Corporation's new generating station to-morrow of the undertaking of the Altrincham Electric (Saturday) afternoon. Supply, Ltd., as lies within the Corporation’s Dum barton.—Clyde Valley Company to jurisdiction. Operate Undertaking. —The Town Council Belfast.— Decision on Extension.— In decided at its last meeting that on the termination December last the city electrical engineer (Mr. of the existing agreement with the Electric W. J. McC. Girvan) submitted recommendations Supply Corporation, Ltd., at March 31st, 1946, for the extension of the Harbour power station an agreement shall be entered into with the at a cost of approximately £1,079,000. There­ Clyde Valley Electrical Power Co., Ltd., to after controversy arose between the Corporation operate the burgh’s Electricity Order for a and the Ministry of Commerce over whether period of 40 years. An amendment that a new plant should be installed at the Harbour further approach should be made to the station or at Ballylumford, and the question was Electricity Commissioners for borrowing the submitted for arbitration to Mr. F. W. Lawton, necessary money to finance the burgh’s operating chief engineer and manager of the Birmingham the Order as a municipal enterprise was defeated. Electric Supply Department. The Ministry has Durham.—Protest Against Abandonment informed the Belfast Corporation that, having of Kepier Project. —The Rural District Council considered Mr. Lawton’s report, it has decided intends to protest against the decision not to that future requirements would best be served allow the building of a power station at Kepier by the immediate initiation of simultaneous by the North-Eastern Electric Supply Co., Ltd. extensions at Ballylumford and the Harbour A sub-committee has been formed to draw up a station. The Belfast Electricity Committee has statement on the matter. expressed alarm at the suggestion with regard to Ballylumford, pointing out that it had already Swindon.—Supply to Railway Works.— been agreed that the installation of more than The Electricity Committee has arranged to one 30,000-kW extension would not be justified provide an additional supply to the Great until it became clear that the rate erf increase in Western Railway W orks at a cost of £12,000. load would be higher than estimated. W orcester.—Annual Accounts.— Presenting Bradford.— Equipment of Permanent Houses. the accounts of the electricity undertaking to the —The Housing Committee has decided that City Council, Alderman Roberts said that they permanent houses built by the Corporation shall showed a deficit of £5,566, which was being met be equipped so that the tenant has a choice of from the reserve fund. They had had to use gas or electricity for cooker, copper and re­ the reserve fund during the past five years as a frigerator where provided, all lighting to be by sort of equalisation account, but despite that the electricity. If the Ministry will not agree to fund stood to-day at a few thousands more than houses being served with both gas and electricity, at the outbreak of the war. then half of the houses will have gas appliances and half electrical, the houses being grouped in Overseas blocks to minimise the expense. A small gas Eire.— Completion of Poulaphouca. —The appliance or an electric immersion heater is to be Irish Press reports that the last consignment of provided for hot water in the summer. In the mechanical equipment for the Poulaphouca case of houses for people with very low in­ hydro-electric station is expected to be delivered comes, cooking is to be by solid fuel augmented on the site shortly. The station will probably by a gas ring or electric boiling point. All be in full operation by the year’s end. Plans cookers, coppers and refrigerators installed are for a third station on the Liffey at Leixlip are to be supplied by and remain the property of the now complete for submission to the Minister Corporation. Electric points are to be provided for Industry and Commerce. in all houses for wireless, vacuum cleaner and iron. TRANSPORT Supply to Housing Estates.— The Electricity Committee is to provide a supply to the Eccles- Glasgow.— Proposed New Plant. — As a hill housing site at a cost of £13,000 and to the proposal of the Transport Committee to install Clayton estate (£14,175). a 25,000-kW turbo-alternator in place of two existing machines aggregating 22,250 kW at the Brierfield.—Increased “ Unit ” Charge.— Pinkston power station would mean an increase The U.D.C. has decided to raise the running of 2,500 kW in the station’s capacity, application charge under the rateable value tariff from was made to the Electricity Commissioners J to Id. per kWh. under Section II of the 1919 Act. The Com­ Camberwell.— Reduced Street Lighting.— missioners replied suggesting that in the first The Works Committee reports that it has instance the Corporation should arrange for the discussed various schemes with the lighting Electricity and Transport Departments to in­ company's representative and has given in­ vestigate the possibility of a supply being given structions for a reduction of 50 per cent, in the by the Electricity Department at the Port Dresent street lighting. The saving in energy Dundas station as an alternative to the proposed will be in the region of 2,000,000 kWh per extension of the Pinkston generating station. annum and there will be a reduction in the It was pointed out that in view of the present annual" cost of street lighting of £6,000. very heavy demands on the manufacturing 420 E l e c t r i c a l R e v ie w September 21, 1945 capacity in the country for plant required in suggested supply from the Electricity Depart­ connection with the national grid system it was ment at Port Dundas was neither a safe nor imperative that further demands should be kept suitable arrangement. to the absolute minimum. In the circumstances The Committee, after discussion, agreed in the it would not appear that the Transport Depart­ circumstances that no action should be taken on ment’s proposal to install a 25,000-kW set to the question of obtaining a supply from the give an increase in the capacity of the station of Electricity Department, and that the town only 2,500 kW would be in the national interest. clerk should be instructed to reply to the When the Commissioners’ letter was con­ Electricity Commissioners on the lines of the sidered by the Transport Committee it also had report submitted by the general manager and to before it a report by the general manager (Mr. press for the granting of the application for E. R. L. Fitzpayne) directing attention to the permission to extend the station capacity by fact that the proposed new set was substantially 2,500 kW . a replacement of existing plant (which required Wartime Precaution Terminated. — The no consent from the Electricity Commissioners) arrangement with the Central Electricity Board and only involved an extension of 2,500 kW ; for the provision of an alternative power supply that the proposed set would be similar to the one for the Corporation transport undertaking in installed in 1938 and would greatly assist the view of the possibility of Pinkston power manufacturers, who had all particulars, drawings, station being damaged by enemy action is to be patterns, etc.; and that, in any event, the terminated.

M unicipal Reports Salford A direction was received during the year to d CRITICAL comments on the present system of extend the Agecroft generating station by the ^assessing payments to the C.E.B. are made installation of two 50,000-kW sets and four by Mr. L. Romero, chief engineer and manager 300,000 lb. per hr. boilers. In 1944-45 a total of the Salford Electricity Department, in his of 82 million kWh was generated (against report for the past year. Referring to the 89 million in 1943-44). deficit of £17,865 on the year’s working, he says that this would have been converted into Sheffield a profit of over £18,000 but for the inclusion A decrease o f 73 -5 m illion kW h (8 per cent.) of a very large debit item to provide for increased in total sales is recorded in the 1944-45 payments to the C.E.B. for the purchase of report of the Sheffield Electricity Department, electricity in the four years to March, 1944. of which Mr. J. R. Struthers is general manager The uncertainty of the amount is, he adds, only and engineer. Total revenue from electricity one of the several grave objections to the supply fell from £2,139,353 to £2,113,452 peculiar method of assessing these very large while working costs rose from £1,640,716 to payments as equal to independent operation £1,760,507. In addition there was an income cost. He considers that every effort should of £60,017 from the installation and motor be made to secure the abolition of this section, with working costs of £61,309. The “ thoroughly unsatisfactory ” system. net deficit on the past year’s working was The report shows that 134-6 million kWh £156,686 (against £29,567 in 1943-44), and was sold, an increase of 4 per cent, on the including special expenditure there was an previous year and a record for any year so far. overall deficiency of £157,817 (£60,000) to be The increase was entirely due to greater use in met from the reserve fund. domestic and shop premises. There is now A total of 835 million kWh was sold (com­ a long waiting list for hired cookers and water pared with 908-4 million), the average price heaters. obtained being 0-605d. (0-563d.) while the cost Income, including a final allocation of £9,300 was 0-652d. (0-572d.). Power supplies were from the second area grid pool, amounted to responsible for the fall in sales, decreasing £623,200 (against £585,371) and working costs from 687-6 million to 586-1 million kWh. Sup­ were £470,782 (£427,576), excluding £45,991 plies for private lighting and heating increased arrears on cost of energy purchased. From from 179-2 million to 207-1 million kW h; public April, 1944, power and traction rates have lighting consumption (0-7 million kWh) showed included a coal clause, and since the close of little change and traction supplies were slightly the 1944-45 financial year consent has been higher than in the previous year at 41 -1 million obtained to advance all other tariffs by 0-ld. kW h. per kWh. The average cost per kWh sold was A total of 1,187-3 million kWh was generated I -121 d. (1 -046d.) and the price obtained I -061d. at the Department’s power stations compared (1 -008d.). After meeting the loss on the year with 1,264-1 million kWh in the previous year. there remains a balance of £82,974 in the reserve The installed plant capacity in commission fund. The last contribution to the rate fund was aggregated 292,000 kW and building and civil in 1940-41, the total amount contributed to that engineering work was in progress for a new date being £341,284, in addition to the repay­ 50,000-kW set and three boilers at Neepsend ment of certain deficits in the early years of the while the installation was commenced of two undertaking. further boilers at Blackburn Meadows. September 2 1 . 1 9 4 5 E l e c t r i c a l R e v ie w 4 2 1 FIXAXC'IAL, SECTIOX Company News. Stock Exchange Activities. detection apparatus, etc.. besides making a Reports and Dividends substantial contribution to the requirements of \ actric. Ltd.—Sir Frederick Whyte (chairman) the Air Ministry for electric motors, rotary stated at the annual meeting that production of convertors, generators, etc., involving new vacuum cleaners had commenced at the factory technical dev elopments. They had also supplied which had been leased to the companv in a a considerable amount of vacuum cleaner appara­ former " distressed area " of Scotland." This tus for ships and aircraft as well as B.V.C. boiler production was expected to reach a substantial sooting plant for famous battleships. Through volume in the near future, and a large part of it their subsidiary, the Magneta Time Co.. they would be available for export. In addition, had maintained their position in the market for another and larger factory would be built time recording and public address equipment, shortly on the same favourable terms and should which had been installed in many of the largest be ready for occupation early next year. This w orks in the country. would provide the companv with one of the most modem and best-equipped factories for the Telephone Rentals. Ltd.. states that the profit manufacture of a complete range of domestic for the year to May 31st was £139,794, as appliances. These arrangements had enabled compared with £138,851. and the net profit them to dispose of their principal London factory £44.387 (against £39.156). The ordinary at a very substantial capital profit, and negotia­ dividend is unchanged at 10 per cent, (final tions were well advanced for the sale of 'other 6 per cent.) and £5,000 is again transferred to redundant properties, which in all probability reserve, leaving £32,929 (£33,537) to be carried would make unnecessary the capital issue fore­ forward. It has been decided to merge the shadowed at the last annual meeting. main operating companies with the parent company as from the end of this year and in Berry's Electric. Ltd.—The accounts for the future accounts will be made up to December year ended March 31st last show a net profit 31st each year. of £60.593 as compared with £56.33S for the previous year. After deducting directors' The British Aluminium Co.. Ltd., is reducing its fees, contribution to staff pension and life interim ordinary dividend to 2 per cent.; in each assurance scheme, war risks commodity of the past five years an interim dividend of 3 per insurance, interest on 71 per cent, notes, cent, has been paid. income tax and N.D.C.. and adding £4,673 The Ransome & Maries Bearing Co.. Ltd.. is brought forward, there is a disposable balance maintaining its final dividend at 11 per cent., of £57,449. A sum of £25.500 (£23.000) making 20 per cent, for the year to June 30th. is allocated to income tax reserve. £10.000 The net profit amounted to £123.227 (against (£15.000) to note redemption reserve. £2.000 123.134). (same) to repairs reserve, and £5.000 (nil) for The Woking Electric Supply Co., Ltd.. has writing down freehold works. The dividend deferred consideration of an interim dividend. for the year is 10 per cent, as before and £7,402 is carried forward. L ast year 3 pier cent, w as paid, free o f tax, the dividend for the full year being 71 per cent, Pye. Ltd.. report a net profit of £115,807 for tax free. the year ended March 31st last as compared The Lancashire L'nited Transport & Power Co.. with £108.910 for the previous year. It is has declared an interim dividend of 4 per cent, proposed to pay a final dividend of 5 per cent, (sam e). on the participating preferred ordinary stock, again making 10 per cent, for the year, and the The Automatic Telephone & Electric'Co.. Ltd.. deferred ordinary stock receives 25 per. cent, announces an interim ordinary dividend of 3 per (same). A sum of £33.766 brought in from sub­ cent., the same as in each of the past seven years. sidiary companies' reserve no longer required is Waite & Son, Ltd.. have declared a first and transferred to general reserve, the employees' final dividend of 5 per cent., the same as last active service fund receives £2.000 (same), staff year. pension fund £5.000 (nil), taxation provision other than E.P.T. amounts to £65.000 (same) The Electric Supply Corporation. Ltd., is and war damage contributions £40S (£750). paying an interim ordinary dividend of 31 per leaving £129.583 (£116.834) to be carried for­ cent. (same). ward. Stothert & Pin. Ltd.. are paying a first and British Vacuum (leaner & Engineering Co., final ordinary dividend of 10 per cent, and a Ltd.—The chairman. Mr. H. C. Booth, referred bonus of 5 per cent., both the same as last year. at the annual meeting to the wide range of the A. RevTolle & Co.. Ltd., are repeating their company's war products. These included gun interim dividend of 5 per cent. mechanisms of many kinds ; tank components : enormous quantities of fuses, shells and other Enfield Cables. Ltd.. is paying an interim kinds of ammunition ; torpedo precision dividend of 6) per cem. on the ordinary’ stock components : and detonating units for naval (same). mines. including sensitive electric clock The Scottish Power Co., Ltd.. has declared an mechanisms. They had co-operated in im­ interim ordinary dividend of 3 per cent, (samel. portant development work and had played no insignificant part in connection with radio­ British Ropes. Ltd.. is again paying an interim location equipment for the Navy, submarine ordinary dividend of 5 per cent. 422 E l e c t r i c a l R e v ie w Sep tem b er 21, 1945

and A. Freeman, 13, Hall Walk, Coleshill, New Companies Warwick. Registered office : 118a, Hubert De La Rue Extrusions, Ltd.—Private company. Street, Aston, Birmingham. Registered September 5th. Capital, £50,000. William White (Srvitchgear), Ltd.—Private Objects: To carry on the business of manu­ company. Registered Sept. 6th. Capital, facturers of, and dealers in, plastic articles and £5,000. Objects: To carry on the business of substances (whether produced by extrusion or electrical, metallurgical, chemical and wireless otherwise), moulding materials, moulded goods, engineers, etc. Directors: Daphne E. C. Foster electrical and insulating goods and materials, and P. W. Foster, both of 62, Warwick Square, etc. Directors: B. C. Westall, Tanyards, S.W.l; and C. J. Baker, 38, Palace Road, Sharpthorne, Sussex (director of Thos. De La Streatbam Hill, S.W.20. Registered office: 56, Rue & Co., Ltd.), C. G. R. Ashton, Ludwell, Buckingham Gate, S.W.L Horsted Keynes, Sussex (director of Thos. De La Rue Plastics, Ltd., and De La Rue William White & Co. (London), Ltd.—Private Insulation, Ltd.), H. P. Bridge, 16, Thetford company. Registered September 7th. Capital, Road, New Malden (director of two last- £10,000. Objects: To carry on the business named companies), J. Eerdmans (Dutch), 31, of wholesale dealers in electrical and other Highway, Sutton, Surrey (director of two last- machinery and apparatus, etc. First directors: named companies) and C. E. S. A. M. Stack­ D aphne E. C. F oster and P. W. Foster, house (U.S.A.), Norwalk, Connecticut, U.S.A. both of 62, Warwick Square, S.W.I. Registered (president and secretary of Extruded Plastics, office: 56, Buckingham Gate, S.W.I. Inc.). Registered office: Imperial House, 86, J. Carter & Sons (Bradford), Ltd.—Private Regent Street, W.l. company. Registered September 4th. Capital, Switchcraft, Ltd. — Private Company- £2,000. Objects : To acquire the business of an Registered August 30th. Capital, £20,000- electrical engineer carried on by J. Carter, as Objects : To carry on the business of manu­ “ J. Carter & Sons,” at 27, Wade Street, Brad­ facturers of, and dealers in, electrical, wireless, ford. First directors : J. Carter, 1138, Leeds television, telephone and telegraph components, Road, Thornbury, Bradford, and F. Carter, 11, household appliances, electrical, motor and aero Birklands Road, Shipley. Registered office : engineers, etc. Directors : W. Balleny, 61, 27, Wade Street, Bradford. Higher Drive, Banstead (director of H. Densham Electrosol Co., Ltd.—Private company. & Sons, Ltd.), K. Hedin (Swedish), Woodside, Registered in Edinburgh August 31st. Capital, Knighton Lane, Buckhurst Hill, Essex (director £4,000. Objects : To carry on the business of of Hedin, Ltd.) and W. C. Pycroft, 123, Park manufacturers of, and dealers in, electrical and Road, N.W.8 (director of Ferranti, Ltd.). other appliances, apparatus and instruments for Registered office : 129, Mount Street, W.l. giving therapeutic treatment, etc. Directors : Belton & Hall, Ltd.—Private company. J. F. Bruce, 192, Glasgow Road, and T. Hunter, Registered August 31st. Capital, £5,000. 35, High Street, both Paisley. Registered Objects: To acquire the business of a radio office : 24, McDowall Street, Paisley. and electrical dealer carried on by Belton & Keb & Co. (Products), Ltd.—Private company. Hall at Bishops Waltham, Fareham and Water- Registered September 4 th. Capital, £100. looville, Hants. Directors: W. G. Belton, Objects : To carry on the business of manu­ Broadlands, New Road, Bishops Waltham, facturers of, and dealers in, electrical plant, Southampton and G. Hall, 5, Brookland Road, appliances and supplies, m otor vehicles, etc. Bishops Waltham, Southampton. Secretary: Mrs. Betty Card, 74, Crombie Road, Sidcup, is G. B. Burr. Registered office: Radio House, the first director. Registered office : 9, Strat­ High Street, Bishops Waltham, Southampton. ford Place, W.L Short Wave (Great Britain), Ltd.—Private Evans Tele-Radio, Ltd.—Private company. company. Registered August 25th. Capital, Registered September 1st. Capital, £1,000. £500. Objects: To carry on the business of Objects: To carry on the business of radio manufacturers of, and dealers in, short-wave engineers and contractors, etc. Directors: and other wireless apparatus, electrical accumu­ L. A. Evans, Georgina Evans and Vera M. lators and batteries and accessories, gramo­ Saunders, all of 12, Bolton Terrance, Coronation phones, records, etc. Directors: G. E. Robson, Road, Worle, Weston-super-Mare, and L. G. 57, Dale Crescent, Patcham, Brighton and J. E. Barber, 3, Trewartha Park, Weston-super-Mare. Hay, Tudor Cottage, Preston Road, Brighton. Registered office: 19, Meadow Street, Weston- Registered office : 63, London Road, Brighton, 1. I super-Mare. Masteradio Electronics, Ltd.—Private com­ pany. Registered September 7th. Capital, £100. Objects: To carry on the business of Companies’ Returns manufacturers of, and dealers in, electronic devices, wireless and television sets and com­ Statements of Capital ponents, etc. Subscribers: R. Neild, Letchmore Metropolitan-Vickers Electrical Co., L td.- Heath, Watford, and C. G. Treacher, 155, Capital, £250,000 in £1 shares. Return dated Tudor Walk, Watford. Registered office: 19, March 28th. 10,002 shares taken up. £10,002 Clarendon Road, Watford, Herts. paid. Mortgages and charges : Nil. C. J. R. Electrical & Electronic Development, City of London Electric Lighting Co., Ltd.— Ltd.—Private company. Registered September Capital, £2,400,000 in £400,000 6 per cent, 5th. Capital, £500. Objects : To carry on the first preference stock, £300,000 8 per cent, business of manufacturers of, and dealers in, second preference stock, £1,600,000 ordinary electrical, radio and cinematograph apparatus, stock, all £1 units, and £100,000 undenominated. accessories and equipment, etc. Directors : Return dated March 28th, 1945. £400,000 6 per J. Hickman, 26, Teddington Grove, Birmingham, cent, first preference stock, £300,000 8 per cent. September 2 1, 1945 E l e c t r i c a l R e v ie w 41

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Electrical Engineers since 1883

NORWICH & /fC ?\ MANCHESTER September 2 1, 1945 E l e c t r ic a l R e v ie w 423

second preference stock and £1,600,000 ordinary ordinary shares taken up. £1,314,000 paid. stock taken up. £1,500,000 paid. £800,000 £6,000 considered as paid. Mortgages and considered as paid. Mortgages and charges: charges : Nil. £540,383. Electricity Distribution of North Wales & Rheostatic Co., Ltd.—Capital, £120,000 in District, Ltd.—Capital, £400,000 in £! shares 100.000 preference stock units of 10s. and (all ordinary). Return dated April 4th. All 350.000 ordinary stock units of 4s. iCapital shares taken up. £396,500 paid, plus £14,587 10s. increased to £250,000 on June 27th, 1945 by premium (Is. 6d. per share on 194,500 shares). creation of 100,000 6 per cent, cumulative pre­ £3,500 considered as paid. Mortgages and ference shares of 10s. each and 400,000 ordinary charges: £16,230. shares of 4s. each). 100,000 preference stock units and 350,000 ordinary stock units taken East Suffolk Electricity Distribution Co., Ltd.— up. £25,100 paid. £94,900 considered as paid. Capital, £125,000 in £1 shares. Return dated Mortgages and charges: Nil. April 2nd. All shares taken up. £125,000 paid, plus £10,000 in respect of premiums. R. T. S. Electronics, Ltd. (formerly Exeter Mortgages and charges: £6,300. Radio & Television Services, Ltd.).—Capital, South Somerset & District Electricity Co., £2,000 in 2,000 shares of £1 each. Return Ltd.—Capital, £200,000 in £1 shares. Return dated July 3rd. 1,736 shares taken up. £1,736 dated April 2nd. All shares taken up. paid. Return of allotments dated February 24th, £206,531 5s. paid (including premium of shows a further 264 shares allotted, and 2s. 4£d. per share on 55,000 shares). Mortgages £264 paid1 or due and payable. Mortgage and charges: Nil. and charges: Nil. West Hampshire Electricity Co., Ltd.— Electric Reduction Co., Ltd.—Capital, £50,000 Capital, £250,000 in £1 shares (all ordinary). in £1 shares (16,200 preference and 33,800 Return dated April 2nd. All shares taken up. ordinary). Return dated February 13th, 1945 £250,000 paid. Mortgages and charges : Nil. (filed March 10th, 1945). 16,200 preference and 28,800 ordinary shares taken up. £18,000 paid. Johnson & Co. (Bradford), Ltd.— Capital, £27,000 considered as paid. Mortgages and £1,000 in £1 shares (500 ordinary and 500 charges :Nil. preference). Return dated March 22nd, 1945. 500 ordinary shares taken up. £500 paid. Minehead Electric Supply Co., Ltd.—Capital, Mortgages and charges: Nil. £130,000 in £1 shares (29,000 first preference and 101,000 ordinary). Return dated July 13th. British Automatic Conveyor & Equipment All shares taken up. £115,027 paid. £14,973 Co., Ltd.—Capital, £1,000 in £1 shares. Return considered as paid. Mortgages and charges: dated January 3rd (filed March 8th). 303 shares Nil. taken up. £303 paid. Mortgages and charges: Partridge Wilson & Co., Ltd.—Capital, Nil. £25,000 in 55,000 shares of 5s. each and 11,250 J. G. Snaith, Ltd.—Capital, £6,000 in £1 shares. shares of £1 each. Return dated April 20th. Return dated April 4th. (Increased to £10,000 54,581 5s. and 11,201 £1 shares taken up. on April 27th.) 6,000 shares taken up. £4,969 £19,701 5s. paid. £5,145 considered as paid. paid. £1,031 considered as paid. Mortgages Mortgages and charges: Nil. and charges: Nil. Hetton Relay Services, Ltd.—Capital, £8,000 Liverpool Electric Cable Co., Ltd.—Capital, in 8,000 shares of £1 each. Return dated £300,000 in £1 shares. Return dated June 20th. February 14th. 7,250 shares taken up. £4,112 150,000 shares taken up. £127,833 paid. paid. £3,138 considered as paid. Mortgages £22,167 considered as paid. Mortgages and and charges: Nil. charges: Nil. Forest City Electric Co., Ltd.—Capital, Macintosh Cable Co., Ltd.— Capital, £250,000 £5,000 in £1 shares. Return dated March 10th, in £1 shares. Return dated March 28th. 500 shares taken up. £500 paid. Mortgages and 1945. All shares taken up. £2,210 paid. charges : Nil. £2,790 considered as paid. Mortgages and charges: Nil. A. H. Webb (London), Ltd.—Capital, £500 in Mechanical & Electrical Engineering Co. £1 shares. Return dated August 14th, 1944 (Walsall), Ltd.—Capital, £5,000 in 5,000 shares (filed March 15th, 1945). All shares taken up. of £1 each. Return dated March 22nd, 1945. £500 paid. Mortgages and charges : Nil. 1,072 shares taken up. £1,072 paid. Mortgages and charges: Nil. Bankruptcies Beethoven Electric Equipment, Ltd.—Capital, W. G. Head, lately carrying on business as an £20,000 in £1 shares (10,000 ordinary and electrical engineer at 30a, High Street, Ashford, 10.000 preference). Return dated May 29th. Kent.—Discharge suspended for seven days. 10.000 ordinary shares taken up. £9,002 paid. Date of discharge August 14th. £998 considered as paid. Mortgages and charges: Nil. Electrical Manufacturers’ Finance Co., Ltd.— Liquidations Capital £150,000 in £1 shares. Return dated British Solenoids, Ltd.—Meeting at 15, Crom­ March’26th, 1945. All shares taken up. well Road, London, S.W.7, on October 18th £150,000 paid. Mortgages and charges: Nil. to receive an account of the winding-up by the Llanelly & District Electric Supply Co., Ltd.— liquidator, Mr. N. S. Hunt. Capital £1,400,000 in 660,000 6 per cent, cumu­ Princely Radio & Television Cpn. (of Great lative preference, 660,000 ordinary and 80,000 Britain), Ltd.—Liquidator, Mr. T. J. M. Mcleod, nndenominated shares of £1 each. Return dated 4, Bucklersbury, London, E.C.4, appointed March 28th. 660,000 preference and 660,000 August 24th. 424 E l e c t r i c a l R e v ie w September 21, 1945 STOCKS AND SHARES Pye, Ltd. Figures published by Pye, Ltd., show that T u esd a y E v e n in g . the company increased its net profit by nearly TOCK EXCHANGE markets remain under £7,000 in respect of the year ended March 31st conflicting influences. On the one hand, last. The company has paid a 25 per cent, the amount of money available for investment dividend in each of the last seven years. In shows no material diminution, in spite of the 1936 and 1937, the payment was 125 per cent, opening of the Thanksgiving Campaigns. plus a capital bonus. The present issued capital From the slightly depressing effect that this is £150,000 in 8 per cent, cumulative preferred factor exercised at first, markets and prices ordinary stock and £185,200 in deferred ordinary have recovered, and the search goes on con­ stock in 5s. units. T he price o f the latter is tinually for good class industrials, ordinary about 31s. 3d. which compares with 6s. 3d. and preference alike. The Lease-Lend negotia­ as the lowest over the past ten years, reached in tions have introduced an element of uncertainty the black days of 1940. into the international position and this, in its turn, reacts closely upon Home industrial Dividend Announcements conditions. British Aluminium shares fell back on the announcement of an interim dividend of 2 per Electricity Supply cent, as against 3 per cent, last year, when a The steadiness of prices of ordinary shares in final of 7 per cent, making 10 per cent, for the Home electricity supply companies, affords year was declared. The present cut is thought the best evidence of the calmness with which likely to herald a possible reduction in the final; shareholders view the outlook. Prices have speculation talks of 8 per cent, for the year. not yet recovered the full extent of the loss Shares changed hands at 41s. before a rally suffered at the time of the General Election to 42s. took place. The interim dividends result, but from the lowest prices reached announced by the Automatic Telephone & there has been a notable reaction upwards. A Electric Co. of 3 per cent, and Enfield Cables question constantly debated is: How will the of 6£ per cent, are the same as those of a Government nationalise the electric lighting year ago. The prices are unchanged at 67s. 6d. industry in accordance with its declared policy ? and 63s. 6d. respectively. Superficially, the obvious answer is that the Brush Electrical Government will take over the companies at a valuation, and issue to the proprietors stock in A reader in the Royal Navy draws courteous lieu of present holdings. But the translation attention to an error in our monthly price of this into practical politics, creates a different tables relating to the dividend on the Brush Elec­ state of affairs. People who have studied the trical Engineering Co.’s shares. This was given subject maintain that to nationalise the industry as 9 per cent, whereas the company, for the would take at least three or four years, and would year ended December 31st, 1944, paid 10 per call for a vast expenditure of expert counsel and cent., out of earnings of 14 per cent, on the labour. Prices accordingly keep steady as a ordinary shares. T he dividend fo r 1941 was whole, the few alterations being mostly due to 6 per cent, raised to 9 p er cent, for 1943, ex dividend markings. following which came the 10 per cent, just mentioned. Prior to 1941, the three previous Movements in Prices years produced no dividend. The company is controlled by the Associated British Engineering Amongst the improvements, Johnson & Co., Ltd. Early in 1939, it acquired from the Phillips have risen 4s. to 79s., Telegraph Con­ controlling undertaking the Diesel and oil structions Is. 6d. to 57s., Tube Investments engine business of Petters, Ltd. i to 5^- and Burco Is. to 16s. Radio shares are again in the ascendant, Cossors being Veritys the most active. The shares at 42s. 6d. are up Veritys, Ltd., the well-known manufacturers Is. 6d. Philco have shown a little animation, of electric fans, switchgear, etc., present their and, on the eve of the accounts being published, accounts for 1943 and 1944, stating that full rose to 14s. 6d. The new shares stand at 13s. 6d. provision has been made for any liabilities, E. K. Cole are unchanged at 35s.; E.M.I. at including taxation. The figures for the past 33s. 9d. show a gain of 6d. Metal Industries year show a decline, owing to the fact that “ B ” put on at 50s. and Murex 2s. to 102s. negotiations with Government Departments, Dollar stocks are good, on American support. relating to price fixing, have not yet been finally The price of Brazilian Tractions rose on four determined. It is assumed that the directors consecutive days in New York, without there have adopted an austere view in regard to being a corresponding movement here, but on a taxation liabilities, and that there will be marked sudden, if tardy, recognition of the American improvement in the figures for the current year. buying, the shares advanced to 3IF Inter­ At the present price of 7s. 9d. the yield on the national “ Tel. & Tel.” improved to 32. The money is £4 16s. 9d. per cent, on the dividend gamble in Tokyo Electric sixes has quietened of 7i per cent, which the company is paying on down, and the price fell back a point to 56J. the ordinary shares. September 2 1 , 1 9 4 5 E l e c t r i c a l R e v ie w 4 2 5 Lamp Publicity Preparations for the 1945-46 Season

General Electric Co., Ltd. ments will appear in the principal trade journals f|^H E first post-war “ Osram ” lamp scheme will which will stress the economy of good lighting follow closely on the lines of its immediate in making possible increased production, and predecessors. The scarcity of materials and at the same time labour preclude the issue of display material offering without ob­ of the kind and variety to which dealers were ligation the skilled accustomed before the war, but during the advice of the com­ next few months the “ Osram ” lamp dealers pany’s lighting will be assisted by a comprehensive advertising engineers on all programme. This will embrace all the national matters appertain­ ing to scientific factory lighting. A n attractive hanging display of Big Ben is available in four colours with the slogan “ Siemens Lamps used for Lighting Big Ben and Just as Reliable,” size 20 in. by 30 in. with metal rims the 20 Siemens Big Ben ” display in. way. In order to comply with the paper control regulations these display bills are printed on linen. The company is prepared to dress dealers’ windows with a Siemens lamp display using the above as ",O sram ” window display the central feature. and provincial newspapers with a supplementary No general distribution of price-lists will be scheme of advertising in the popular magazines, made but price-lists are available for the trade the press of all religious denominations and in on request, showing the new reduced prices. the technical press of every industry. Philips Lamps, Ltd. More direct help for dealers consists of two The psychological impulse to break some­ window displays, the installation of which will thing open just to see “ the works ” is the idea again be in the hands of the G.E.C. dealer which lies behind the presentation of the new service. Each is carried out in bright colours, advertising of carefully chosen and blended to form a most Philips Lamps, Ltd. attractive display. A lamp is shown The lighting “ motif ” is also strong in the new with a doorway cut series of pictures now decorating the “ blitzed ” into it. The door windows of Magnet House, Kingsway. These is padlocked and portray four of the London railway termini and the “ copy ” tells convey the atmosphere of these stations (in a the public that, metaphorical sense) extremely well. locked away inside, is the secret behind Siemens Electric Lamps & Supplies, Ltd. the economical In the interests of national economy the consumption “ for publicity scheme of Siemens Electric Lamps & a maximum of Supplies Ltd. is of necessity curtailed, but the clear, bright light.” company intends to keep the name “ Siemens ” Other advertise­ well in the public eye. Subject to limitations ments show a knife on space, display advertisements will appear cutting a lamp in from time to time in the national and provincial two; two people newspapers, the Radio Times, Picture Post, etc. walking into a lam p In view of the urgent necessity for speeding up through a doorw ay, One of the Philips adver- output in all essential industries, special atten­ t is e m e n t s and so on. They tion will be devoted to improved lighting in will appear in all factories with Siemens lamps and lighting the national dailies and a wide range of provincial equipment, and to this end display ddvertise- papers. This presentation is in keeping with 426 E l e c t r i c a l R e v ie w September 21, 1945

previous Philips campaigns. To-day, the war punched with three holes for binding in a link is dropped but the theme of the workman­ folder. Among leaflets already published are ship of the Philips lamp remains an essential those dealing with general lighting service part of the latest campaign. lamps (102/1-1), miners’ bulbs (102 36-1), electric-discharge lamps (103/1-1) and control British Thomson-Houston Co., Ltd. gear (103/2-1), as well as leaflets numbered “ Mazda ” lamp advertising during the coming autumn and winter will exploit to the full the most effective of the permissible avenues of propaganda. In the matter of “ literature,” a “ Mazda ” lamp broadsheet (L. 780) con­ taining reduced prices of general service, sign and traction lamps, together with the full range of other lamps available, has been produced. In addition, a number of B.T.H. lighting bulletins dealing with street lighting, infra-red processes, fluorescent lighting, etc., are available, together with a leaflet explanatory of the new “ Mazda ” warm-white fluorescent lamp. School lighting, to accord with the new Education Act, has occupied the attention of B.T.H. lighting engineers and appropriate matter in the form of reprints of papers read by members of the company’s organisation and descriptive lists of lighting fittings for this wide field is published. Some of the “ M etrovick ” publications Display pieces to form part of general window displays have also been produced, but these are, 124 1-1 and 124 2-1, w hich describe flameproof of necessity, in limited supply. There are three and gastight fittings for use in mines and different displays made of linen with silk industrial establishments. Other similar leaflets screened designs. The displays, measuring cover a wide range of industrial lighting fittings. 3 ft. by 2 ft., are colourful and attractive. The ending of the black-out is marked by The advertising scheme for national news­ the publication of a number of descriptive papers and periodicals and the electrical and leaflets on “ Metrovick ” street lighting lanterns suitable fo r Class “ A ” and Class “ B ” roads giving candle - power distribution curves and other characteristics. Leaflet 122 21-1 of this series describes the “ Trafford” lantern for Class “ A ” roads: all are in similar form to those described above. A new' abridged edition of the price list (E.S. 4102 27) in orange and white giving reduced “ Cosmos ” lamp prices has been prepared and will be distributed as far as regulations will allow. A price-card is also being distributed “ M azda” window arrangement with the abridged price list. The “ Metrovick ” technical journals is, the company says, more fluorescent lamp bothTin its “ daylight” and ambitious than in the war years. “ warm-white ” formsj is described (together with fittings) in a small folder (7103 '26) printed Metropolitan-Vickers Electrical Co., Ltd. in two colours, and another folder (S.P. 7108/1) A notable feature of the publicity of the deals with infra-red equipment for- industrial Metropolitan - Vickers Electrical Co., Ltd., heating, including lamps and fittings. for the new season is the publication of Small nunibers of folding window displav the first leaflets of a series dealing with units made before the war are still available. “ Cosmos and “ Metrovick ” lamps and The well-known Metrovick Cosmos “ Girl ” lighting equipment. They are in quarto size, calendar will again be available. September 2 1 , 1945 E l e c t r ic a l R e v ie w 427 m PATEN TS Electrical Specifications Recently Published

The numbers under which the specifications will be 29th, 1942. (571503.) “ Frequency modulation printed and abridged arc given in parentheses. detector.” 21000/43. December 15th, 1942. Copies of any specifications (Li. each) may be (571580.) “ Electric transmission lines.” obtained from the Patent Office, 25. Southampton 3615/44. February 27th, 1943. (571652.) Buildings, London. W .C.2. Mavor & Coulson, Ltd., and J. B. Mavor.— E. ALLEY.—“ Superheater headers tor“ Mining machines." 12328. July 29th, 1943. ^ boilers.” 1199. January 21st, 1944. (571624.) (571523.) F. G. Mitchell.—“ Cooling towers.” 19273. Allmanna Svenska Elektriska Aktiebolaget.— November 18th, 1943. (571510.) " Heavy machinery driving arrangements, sup­ Parolle Electrical Plant Co., Ltd., and J. H. L. ported by the driven shaft." 16682 43. October Tucker.—“ Barometrically compensated gauges 12th, 1942. (571614.) for low pressures and vacuum.” 14891. Belling & Lee, Ltd., and E. M. Lee.— September 10th, 1943. (571561.) " Mountings for thermionic valve bases and Pyrene Co., Ltd., W. L. Baker and H. E. T. other electrical components.” 9876. June Day.—" Electrodeposition of tin copper alloys.” 18th. 1943. (571599.) 1868. February 1st, 1944. (571641.) Bennis Combustion, Ltd., and A. W. Bennis. Revo Electric Co., Ltd., A. E. Felton and —“ Automatic stokers for steam generators." A. N. Harding.—“ Adjustable mounting for an 4763. March 24th. 1943. (571594.) electric hotplate or like unit." 19053. Novem­ F. Bradbury.—“ Starting mechanism for ber 16th, 1943. (571509.) electric clocks and the like." 15041. September A. Reyrolle & Co., Ltd., I. W. A. Kirkwood, 14th, 1943. (571611.) J. S. Gillhespy and F. Jeffrey.—“ Electric British N.S.F. Co., Ltd. (Oak Manufacturing insulators.” 2768. February 15th, 1944. Co.).—” Electrical interrupters of vibrators.” (571648.) 20693. December 10th. 1943. (571516.) G. R. Shepherd (Westinghouse Electric British Thomson-Houston Co., Ltd.— International Co.). — “ Electric connectors.” “ Resinous compositions." 2455 42. February 21935. December 31st, 1943. (571581.) 26th, 1941. (571496.) " Dielectric and Siemens Bros. & Co., Ltd., and D. A. insulating compositions." 4900 43. March Christian. — “ Electric selective signalling 31st, 1942. (571498.) systems.” 612. January 12th, 1944. (571520.) British Thomson-Houston Co., Ltd.— Standard Telephones & Cables, Ltd., and “ Electric resistance heaters." 442 44. January E. C. Lee.—“ Terminations for electric power 11th, 1943. (571519.) “ Electric toasters." cables." 3520. February 25th, 1944. (571587.) 21398 43. Decem ber 24th, 1942. (571634.) Standard Telephones & Cables, Ltd., and A. F. Burgess (Wincharger Corporation).— A. J. Maddock.—“ Cutting glass.” 21196. " Wind-driven power plants." 2317. February December 17th, 1943. (571633.) 8th, 1944. (571644.) H. Ward.—“ Means for operating an electric Callender's Cable & Construction Co.. Ltd., switch at a predetermined time.” 10853. P. V. Hunter and G. M. Hamilton.—“ Manu­ September 5th, 1943. (571541.) facture o f enam elled copper wire.” 102. Westinghouse Electric International Co.— January 4th, 1944. (571638.) “ Carrier current telephone transmitter circuits.” R. Clarke and Laurence, Scott & Electro­ 1737/43. October 22nd, 1942. (571627.) motors, Ltd.—“ Lockout means for electric J. S. White & Co., Ltd., and O. Hurst.— contactors and the like electric circuit-breaking “ Electric welding.” 18509. November 8th, devices.” 21223. December 17th, 1943. 1943. (571618.) (571569.) Claude-General Neon Lights, Ltd., and A. C. Lewis.—“ Multiple burettes.” 17091. October 18th, 1943. (571504.) New Mexican Factory Enfield Rolling Mills, Ltd., and R. L. Stubbs. A S10 million plant is to be built near Mexico —“ Building." 20791. December 11th, 1943. f A . City for manufacturing refrigerators, (571545.) home radio sets and other types of electrical G. R. Fountain, Ltd., and P. D. R. Marks. equipment. It will be financed by American —“ Telephone systems.” 3720. March 20th, and Mexican capital and will operate under 1942. (571547.) licence arrangements with the Westinghouse General Electric Co., Ltd., and S. K. Lewer. Electric International Company, a subsidiary —“ Piezo-electric oscillators.” 3027. February of the Westinghouse Corporation. The plant 24th, 1943. (571623.) will be managed by a new company, Industrial General Electric Co., Ltd., F. G. Quance Electrica de Mexico, it was stated by the and W. Manchester. — “ Electric coupling American banking firm of Kuhn, Loeb & elements.” 19767. November 26th, 1943. Company, who will head the American group (571576.) which will take over 49 per cent, of the share W. T. Henley's Telegraph Works Co.. Ltd., capital of the company. The remainder will and H. Hubbard. — “ Electric distribution be in the hands of a Mexican group headed boards.” 1235. January 22nd, 1944. (571640.) by the Banco Nacional de Mexico. An Hoover, Ltd.—" Suction cleaners.” 3508- additional $5 million capital will be subscribed 11-13-14 44. April 26th, 1943. (571583-6.) in the form of bonds by Nacional Financiera M a rc o n i's Wireless Telegraph Co., Ltd.— S.A. of Mexico, an agency of the Mexican “ C a th o d e assembly.” 16415/43. September Government. 428 E l e c t r i c a l R e v ie w September 21, 1945 CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work

Barnsley.—Houses (115), Park House estate; Contracts Open borough engineer. Where “ Contracts Open ” are advertised in our Bootle.—Works additions, Irlam Road ; “ Official Notices ” section the date of the issue Littlewoods, Ltd. is given in parentheses. Bradford.—Additions to Bradford Cathedral Birmingham.—October 4th. Electric Supply (£150,000); cathedral council. Department. 132-kV overhead lines. (Septem­ Houses (75); city architect, Town Hall. ber 7th.) Crook (Co. Durham).—Greyhound stadium; Bristol.—September 28th. Mental Hospital. Simpson & Fortune, West Road, Crook. Installation of a private automatic telephone Dumbarton.—Houses (122); W. Wilson, and fire alarm system. (August 31st.) burgh engineer, Municipal Buildings. Eire.—December 14th. Electricity Supply Durham.—Additions to Stockton Junior Board. Civil construction work in connection Technical School; F. Willey, architect, 34, Old with the hydro-electric development of the Elvet, Durham. Erne, including dam, power station, etc., at Leith.—Flour mills, quays, storage warehouses Cathaleen’s Falls (40,000 kW) and Cliff (10,000 (plant for discharging grain cargoes) and other kW). Specification, etc., from the Board’s ancillary works to cost over £750,000; Joseph secretary, Mr. P. J. Dempsey, 60-62, Upper Rank, Ltd., flour millers, London. Mount Street, Dublin. Manchester. — Works extensions, Skerton Grimsby.—October 3rd. Electricity Depart­ Road; W. J. Brookes & Sons, Ltd., bakers, ment. Transformers, switchgear and cables. Skerton Road, Old TrafFord, Manchester, 16. (See this issue.) Reconstruction of works and machinery, Manchester.—October 1st. Electricity Com­ Erskine Street; R. Gibson & Sons, Ltd., medical mittee. Main gas duct between boiler and lozenge makers, Carlton Works, Erskine Street, chimney, Stuart Street Station. (September H ulm e, M anchester, 15. 14th.) Middlesbrough.—Temporary junior and Redcar.—October 6th. Town Council. infants’ school; education architect. Cable laying, etc. (See this issue.) Saltcoats (Ayrshire).— Houses (26); Black & Salford.—October 3rd. Electricity Depart­ Shapley, architects, 15, Barr Street, Ardrossan. ment. Power transformers. (See this issue.) Scarborough.—Houses (46), Barrowcliff Scotland.—October 15th. North of Scotland estate; H. V. Overfield, borough engineer. Hydro-Electric Board. 132-kV transmission Stafford.—Pumping station and equipment lines. (August 10th.) Milford (£16,000); T. H. Higson, borough Walsall.—October 5th. Electricity Depart­ engineer and surveyor. ment. Supply of materials and apparatus of Stockport.—Rebuilding works after fire, Upper British manufacture. (September 14th.) Brook Street; Batley & Co., manufacturing Warrington.—October 1st. Electricity Depart­ chemists, Gorsey Works, Upper Brook Street, ment. Twelve months’ supply of cables. (Sep­ S tockport. tember 14th.) Stockton-on-Tees.—New factories for Gorrill, Woolwich.—October 9th. Electricity Depart­ Ltd., A. Kennedy & Co., .Ltd., Middlesbrough, ment. One 750-kW Diesel alternator and four G. Hope (Builders), Ltd., Stockton, and Stock­ 30-MVA outdoor reactors. (August 31st.) ton Stone & Concrete Co., Ltd. Swindon.—Community centre, Tiverton Road Orders Placed (£1,968); borough engineer. Bradford.—Electricity Committee. Accepted. Thirsk.—Houses for R.D.C.; Needham & Extension of ash plant system.—International Thorp, architects, 3, Duncombe Place, York. Combustion. Tyldesley.—Extensions to Boothstown Mills Paisley.—Corporation Electricity Committee. for William Yates & Son, Ltd.; B. Pendleton, Recommended. Cable for housing scheme 16, Brazennose Street, Albert Square, Man­ (£6,969).—Scottish Cables. chester, 2. Swindon.—Electricity Committee. Accepted. Warrington.—Cubicle block at Isolation L.v. switchgear (£691)—English Electric Co. Hospital (£8,000); J. Y. Hughes, Municipal H.v. switchgear (£1,359).—Ferguson Pailin. Buildings, Bank Park, Warrington. West Hartlepool.—Houses (106), Dyke House Contracts in Prospect estate; borough engineer. Wigton.—Houses (63); North-Eastern Hous­ Particulars o f new works and building schemes for ing Association, Metrovick House, Northumber­ the use of electrical installation contractors and land Road, Newcastle-on-Tyne. traders. Publication in this section is no guarantee York.—Additions, Boroughbridge Road; that electrical work is definitely included. Alleged British Sugar Corporation, Ltd. inaccuracies should be reported to the Editors. Flats (32), Beech Avenue; Ainsty Building Aberdeen.—Rebuilding of Palace Hotel after Estates, Ltd. fire (£500,000); architects, L.N.E.R., Edin­ Rebuilding Poppleton Road school; city burgh. architect. September 21, 1945 E l e c t r i c a l R e v ie w

STEALING THE LIMELIGHT For ten years and more the Simmonds Nut with its elastic fibre collar has held “centre stage”. Many millions have been and are still specified by industry. But recently a newcomer has been stealing the limelight —the all metal Pinnacle—the Stop Nut with the spring metal diaphragm. There should be fierce competition between these two Stars of the Stop Nut world but, strangely, there is not. Each has its part to play. Each acknowledges the virtues of the other. Between them they have supplied over 90% of all British Stop Nut needs during the last ten years. A very successful double act !

Simmonds Aerocessories Limited • Great West Road • London A Company o f the Simmonds Group 4 4 E l e c t r i c a l R e v i e w September 21, 1945 ’

THE PHOSPHOR BRONZE COMPANY LIMITED WITTON • BHAM 6 A KRFIELD c m =a* < [ I 1 i S i ' A S ' 1 ALLOYS A N D B e a r IN C METALS F 1 f S S L ? " “ A C ID -B E S B TniG A.LO V S. LEAD BAOMZES 1, A N D centrifugal CASTINGS -I A *.c-.-F£ = = c US a GTS '

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TUBE COMPANY LIMITED : : : : LUDGATE HILL BIR M INGHAM Axone CBN H 67 GRAMS ’slash’Birmingham t r i p l e h a m m e r e d Sales Depots : London - Leeds - 5 York Place 10 20 30 40 50 60 S8 Gcswell Road, E.C.I Swansea - I Grove Place AMPERE TURNS p e r in c h Neweastle-on-Tyne • Sc Glasgow - 137», St. Vincent Registered Trade M arks: John Street Street •• LO W M O O R ,” TAYLORS, LEEDS ” ••W-: loos ,e® 4 Vi M '.m i 5V EYEfiY lEMtTM •• FARNLEY.” ■■ MONKBRIDGE, YORKS September 2 1 , 1 945 E l e c t r ic a l R e v ie w 4 5

ELECTRIC LAMPS

Price Reduction Group 1 Lamps operative on July 16th, 1945

The Electric Lamp Manufacturers’ Association have pleasure in announcing that they will make allowances direct to Retailers without Agreement for the difference between old and reduced prices on stocks held on July 16th, 1945.

For this purpose Retailers are invited to apply to the Electric Lamp Manufacturers’ Association, 25 Bedford Square, London, W.C.I for a Form on which to make their claim not later than October 3rd, 1945.

ELECTRIC LAMP MANUFACTURERS5 ASSOCIATION 25 BEDFORD SQUARE, LONDON, W.C.l 46 E l e c t r i c a l R e v ie w September 21, 1945

MICA i MICANITE Send us y o u r enquiries fo r all classes o f M IC A A N D M IC A N ITE . W e can give you the quality and service required. Ask for booklet M/44. Contractors to Admiralty, Air Ministry, War Office and other Government Department lists. H. C1ARKE ft (O.(HmKbester) Ltd. Atlas W orks, Patricroft, Manchester Telephone : Eccles 2001-2-3-4-5 Telegrams : “ Pirtoid, Phone, Manchester "

- — "

^ ¿ 7 n e L / m / t s i n ) ¡3>J£5'J* ¿jJ£'J,A L V J O T i j i y FOR IN S T R U M E N TCASES VVE Ca° satisfy your recluirements in J ELECTRICAL SW ITCHGEAR CASES Sheet Metal Precision work, for we , lln ,,Firn n . r - is c * work to the finest limits. AMPLIFIER RACKS, etc. RADIO CHASSIS And by fine limits> we mean what wesay' T You can therefore send us your enquiries with confidence that we can fulfil your need. f * ill! W e are also equipped to finish an excellent job by enamelling, electro-plating, etc., to your specification.

RITHERDON s C ompanyLimited North Bridge Mill, White Lion Brow, Deansgate, Bolton Established 1895 T e le p h o n e : 3722

ST. September 2 1 , 1 945 E l e c t r ic a l R e v ie w 4 7 POWER

% Radar, the Bailey Bridge, the of power distribution will make Mulberry Dock, the de-polarising of available plug-in tapping our merchant ships against the points for every two feet of magnetic mine were all sweeping factory space. Bus-Bar-Tee advances which events demanded. with bare copper bars is totally enclosed and has The reorganising and re-equipping automatic earthing. Approved of British Industry, now and in the by Government Departments future, is no less urgent. And to for its efficiency and all­ speed this process the fam­ round flexibility. Send for ous Bus-Bar-Tee System descriptive Catalogue.

Switchgear Manufacturers Mechanicat Engineers

S T A N D A R D ROAD, NORTH ACTON, LONDON, N.W.10 Tel: ELCar 6601 4 8 E l e c t r i c a l R e v ie w September 21, 1945

SERVES THE COUNTRY with EndwtingiQUALITY

Phone 1691-2 DEWSBURY

STRICT CONTROL OF TEMPERATURE -----

THE RHEOSTATIC COMPANY LIMITED SLOUGH BUCKS TELEPHONE ! SLOUGH, 233ly6. TELEGRAMS t RESISTANCE,S LOUGH. September 21,1945 E l e c t r ic a l R e v ie w 49

TESTED AT WORKS Each case contains the power plant behind the ASDIC Manufactured, and in its present form designed by

T H E NORMAND ELECTRICAL CO. LTD. NORTH STREET • CLAPHAM COMMON LONDON S W 4 TEL: MACAULAY 3211-4 5 0 E l e c t r i c a l R e v ie w September 21, 1945

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

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

l/ l/ B 0

The self-satisfied look of the ‘«gee-gee ’ comes from the certain knowledge that he is a part of a range of efficient quality products that are designed and built with a purpose for the purpose. No effort is spared to ensure that the * pedigree ’ so marked in both the appearance and performance ot de Renzi, Holmes’ Products is unmarred by either materials, workmanship or design that do not reach the high standard which you have come to expect. If you can effectively incorporate any of de Renzi Holmes’ Products into your equipment the services of our technical department are at your disposal—NOW MANUFACTURERS OF CAM-OPERATED CONTACTOR CONTROLLERS • SLIDER RHEOSTATS RUSTLESS UNBREAKABLE GRID RESISTANCES WELDING RHEOSTATS

de R e n z i,H o l m e s &C o .I t d FOX'S LANE * WOLVERHAMPTON TELEPHONE : WOLVERHAMPTON 21714

LONDON OFFICE R. B WHITTICK. A.M.I.E.E.. ABFORD HOUSE. WILTON ROAD. S.W. I. TELEPHONE VICTORIA 5700 SCOTTISH REPRESENTATIVE JOHN H. SCOTT. 89-90. YORK STREET. GLASGOW, C.2. TELEPHONE. CITY 6677 September 2 1 , 1945 E l e c t r ic a l R e v ie w 51

QJUFLEX LTD., are engaged ^ solely in the manufacture of insulating sleeving. Suflex products in clu d e :—

VARNISHED COTTON SLEEVING

VARNISHED SILK SLEEVING

PLASTIC SLEEVING & TUBING

REINFORCED PLASTIC SLEEVING

METAL SCREENING AND

METAL SCREENED SLEEVING from the smallest to the largest diam eters. CUFLEX «INSULATING SLEEVING

SUFLEX LTD.. AINTREE ROAD, PERIVALE, GREENFORD, HIDDX. PERivale 4467 3961 F 52 E l e c t r i c a l R e v ie w September 21, 1945

EIO O -4 ELEXCEL LTD • VICTOR. WORKS-BROAD G R E E N * LI V E R P 0 0 L • 14 September 2 1 , 1 9 4 5 E l e c t r ic a l R e v ie w These tw

saved £ 5 0 0 a year by P.F. correction.

Two needs existed in a large works. efficient constant speed drives. At the First, equipment was required to maintain same time they maintain an overall the overall power factor at an economical maximum demand of approximately figure. Second, motors were required to 1,800 kW at a power factor of '985 drive two large compressors. By ordering lagging. They saved £500 a year on the two 560 FI.P. Crompton Auto- maximum kVA demand over what it Synchronous Motors both needs were would have been with ordinary induction satisfied. The motors provide highly motors without p.f. correction.

CRompToir'pRRKinson LIMITED

ELECTRA HOUSE, VICTORIA EMBANKMENT. LONDON, W.C.2 a n d Branches

G 54 E l e c t r i c a l R e v ie w September 2 1 , 1 9 4 5 Rapid Dynamic Balancing Machine For Small Rotors

M o d e l W 100 ★ Swivel nozzle Retail 12 gns. ★ Swivel hose plus Purchase Tax. ★ Easy-running sleighs Enquiries invited from ★ Easy dust-bag Electrical Retailers and removal Supply Undertakings.

CHAPELHALL, AIEDEIB, SCOTLAND

The “ Fluxite Quins " it work

“ Where s 01 with The angular position, and the magnitude that FLU XITE t" C ried O H . of the out-of-balance- error, are indi­ “ I're hunted around high and low." cated automatically. Cried EH from the cab, “ Stand dear o f the grab . . . " The procedure is so simple that the “ Hey, look I There he is / W h a t d 'y e machine can be operated by unskilled kn o w ! " For all SO LDE RING work—you need FLU X ITE- labour after brief instruction. the paste flux—with which even dirty m etals are soldered and “ tinned.” For the jointing of lead —without solder and the “ running ” of white For further information about this and m etal bearings— without “ tinning ” the bearing. It is suitable for ALL METALS—excepting other types of Dynamic Balancing A LU M IN IU M —and can be used with safety on Machines, please write for booklet ELECTRICAL and other sensitive apparatus. W ith FLU X IT E joints can be “ wiped ” success­ T205S. fully that are impossible by any other method. Used for over 30 years in Governm ent w orks and by leading Engineers and Manufacturers. OF A LL IRO N M O N GERS in tins—8d., I 4 and 2,8. The “FLUXITE G UN” puts FLUXITE where you want it by a simple pressure. Price 1/6 or filled 2/6 FLUXITE W. & T. AVERY LTD. SIMPLIFIES ALL S0 LPE 1 IM« Write for Leaflets on Case-Hardening Steel and Temperingj Tools I SOHO FOUNDRY, BIRMINGHAM 40 with FLUXITE, also on '* Wiped" joints. Price Id. each,•aeh. FLUXITE LTD. (Dept. R.E.), Bermondsey St.,, S.E.I I September 21, 1945 E l e c t r i c a l R e v ie w 5 5

This illustration shows

a number of the various

types of W . & G. Lamp­

holders supplied with

and without porcelain

in terio rs.

A wide and compre­

hensive range of

electrical accessories '

is available for

essential requirements.

SOLON Industrial Type Electric Soldering Irons rated at 65 watts are now available for use Now available for where a low voltage system of supply is employed. There are two models, one fitted with an oval tapered bit as illustrated, Low Voltages the other with a round pencil bit, and they will do the same class of w o rk as th e w e ll-kn o w n 12 V. and 2 4 V. SOLONS of 65 watt rating for normal supply voltages. Their design incorporates the many special SOLON features, including the fitting of the heating element inside the bit. Write for details cf Both models can be supplied the complete SOLON fitte d with elements for 12 volts range for low and o r fo r 24 volts su ly, as normal voltages. re q u ire d . Complete with 6 feet of HENLEY twin core flexible .

SOLDERING IRON for INDUSTRIAL USE

>

Entirely automatic and self cleaning.

Completely enclosed.

Airtight system maintained.

Made in various sizes with . capacities from 100,000 fo 3,500,000 gallons per hour.

HICK Ha r g r e a v e s

P h o n e : G ra m s : 1373 (3 lines) BOLTON ■ HICK, BOLTON ' A D 4 9 C

T h e /HACIFAIPLANIE STRAND ENGINEERING C o., Ltd. Cathcart, Glasgow ______9 ______RESISTANCES ARE W e are SPECIALISTS in UNIVERSITY AND TECHNICAL COLLEGE UNRIVALLED FOR THEID LABORATORY PLANT Dynamometers QUALITY Rotary Convertors Multi Rotor Machines PE CE Sine Wave Alternators m and many others ASK FOR OUR CATALOGUE APPROVED ALLCOVERMCNT DQPT’

Sole Agents for England: Messrs. STELMAR Limited THE STRAN D 31 Bevenden Street, London, N.l ELECTRIC S.ENCINEERINC C°LT0 Telephone : Clerkenwell 5974 MANCHESTER LONDON DUBLIN September 21, 1945 E l e c t r ic a l R e v ie w 57

Throughout maritime history, count­ No bigger than a packet of tea, less lives have been lost at sea the Permutit Sea-water De-salting through shipwrecked men drinking Apparatus produces enough drinking sea-water in the desperation and water to maintain life. torture of thirst. This Apparatus, one of Permutit’s With the advent of the war — and the contributions to the War Effort, is sup­ necessity of flying over long stretches plied to the R.N. Aii Arm, Carley Floats of water—the invention of a compact of H.M. ships, and the R.A.F. It is apparatus for producing drinking also used by the U.S. Army and Naval water from sea-water became vital. Air Forces and American Airlines.

Manu factured under the following Potent Applications.. Permutit Patent Appls. Nos. 16516 & 16580141 Nos. 322 & 812/42 Nos. 8953 & 9224/44 D.S.I.R. Patent Appl. 13944/42 THE PERMUTIT COMPANY LTD., D e p t.T .W , Permutit House, Gunnersbury Avenue, London, W.4 Phone: Chiswick 6431 E l e c t r i c a l R e v ie w September 2 1 , 1 9 4 5

m JICopeAawU

**— C i S ' i f . i k lo u d s S q M MACROME ( K m A i d / MACROME LTD. (“at) ALCESTER, WARWICKSHIRE ALSO AT LONDON, GLASGOW, MANCHESTER, LEEDS, SOUTHAMPTON, BIRMINGHAM

THE GENERAL ACCESSORIES CO. LTD. BARTON HILL WORKS MAZE STREET, BRISTOL 5 ESTABLISHED I89S

• ELECTRIC WIRING ACCESSORIES of the Highest Grade

• THE MOTOR WITH A MARGIN SPECIALITY: Patent N on-overhang FLATHER&CT- WALL SOCKETS 10, Bfypate, jfiudd J, Stufand. AND PHONES 20778-9 GRAMS iCABLES;PLATHCOY LEEDS' B.E.S.A. PLUGS September 2 1, 1945 E l e c t r ic a l R e v ie w 5 9

PROBLEMS WE HAVE SOLVED — No. 3 THE ELECTRICAL INTERLOCKING SYSTEM

" slave ” motors

HE running of several motors in a plant Remember T at exactly the same speed and with exactly the same angular displacement without the use of mechanical means, such as flexible the name- drives, was at one time impossible. The problem was put to S.E.M. research engin­ eers and they developed an Electrical Interlocking you'll want System which had all the necessary features. For this purpose a repeater type of motor was specially designed. i t a g a i n The various “ slave” motors are run from a master driver. This driver consists of a synchronous motor driving a master torque generator (the generator motor being fed from the normal A.C. supply) and the generator’s three-phase stator produces the necessary current to operate the “ slave ” motors. These “ slave ” motors are essentially similar to the master generator, but of a smaller size. The rotors are fed from the nor­ mal A.C. supply and the stators are energized from the generator. This system was originally designed for the synchronizing of cameras and projectors for “back projection” work, but has since been used in gun controls, telegraph systems, railway signals, aerial tuning-circuit controls, and many other similar mechanisms. This is only one of the many technical problems which we have been called upon to solve. We specialize in supplying non-standard electrical devices for particular purposes. The resources of our research laboratories are available now to manufacturers who have a special problem.

SMALL ELECTRIC MOTORS LTD. dm 987 (A SUBSIDIARY OF BROADCAST RELAY SERVICE LTD.) BECKENHAM • KENT 6 0 f iit TEK M R e m e -». September 2 1. 1 9 4 5

ß m & t

MODERN POW ER STATION EQUIPMENT EVAPORATORS AND DE-AERATORS LOW AND HIGH PRESSURE HEATERS STEAM EJECTOR AIR PUMPS CONDENSATE EXTRACTION AND CIRCULATING W A TER PUMPS TW1N Si_EU- surface type condenser ftlRRLEES WATSON

ENGINEERS GLASGOW September 21, 1945 E l e c t r ic a l R e v ie w 61 INDUCTION INST

Modem instruments for Modern Switchboards—induction ammeters, voltmeters, watt-meters, power, factor meters, frequency meters and synchroscopes—afi available in round sector and edgewise cases which are uniform in appearance and dimensions with “Metrovick’* moving iron, moving coil and dynamometer instruments.

Outstanding features ;— ★ lo n g , dear scales. •k Robust movements, i f 1st grade accuracy.

G/Y40I

IM PROVE YOUR LIGHTING #7% consultation with METROVICKS ILLUMINATING ENGINEERS E l e c t r ic a l R e v ie w September 21, 1945

As pioneers of this type of motor we have supplied over 3,000 machines to one customer alone

HIGH EFFICIENCY TOTALLY ENCLOSED INDUCTION MOTORS Surface Cooled type from i to ISO H.P. CDMUNLCY » KfclGHUCY" "ENGLHND phone: cro sshills 200 u u . n e s ) GRfiMS: GREEN-CROSSHILLS 200

Manufacturers whose goods require the inclus­

ion of a fractional horse­ Not« the tongue which •nsures perfect and power motor generally permanent contact. Easy fix. Nuts cannot specify “ Croydon.” Thus n. All sizes from half to two inches they ensure that, in THE DONOVAN ELECTRICAL CO. LTB. trusting their manufac­ BIRMINGHAM 9 turing reputation to an Electrical Manufacturers and Stockholders electric motor, it will reflect the good work­ manship and quality of their own products. T H E LARGEST BUYERS OF HEATING ELEMENTS BUY FROM

c r o V d o n I- Wireohms Ltd. PEASHILL ROAD ENGINEERING COMPANY LIMITED NOTTINGHAM II COMMERCE WAY PURLEY WAY CROYDON Telephone. CRCYOON 4125-8 Telegrams SYNCR0Y.CR0YDÛN WHO SUPPLY ALL TYPES OF ELECTRIC GRI ELEMENTS FOR MANUFACTURERS R:L % Sept emiter 2 1, 1945 E l e c t r ic a l R e v ie w 63

motor»[ a* m

^gSRSwi«* S c a b l e s

{ ‘ f a r * SiiM ife\w ** we» mms siemens electric lamps & sopplies ltd., 38/39 Upper Thames Street, London, E.C.<

Frames and Cases for Electrical Equipment

FEEDER PILLARS,

CUBICLE AND

TELEPHONE BOXES, xtM" BUSBAR CHAMBERS,

CONNECTION BOXES, ; is of INSTRUMENT PANELS

id AIR DUCTS

G R E A T VVEST ROAD, BRENTFORD HfCI# Phone: Ealing 6655. Telegraphic Address: " Airdux, Brentford ” »1 64 E l e c t r i c a l R e v ie w September 21, 1945

m p

SWITCH AND FUSE GEAR PLUGS AND SOCKETS LIGHTING FITTINGS

WILLIAM

McGEOCH&C0 LTD WARWICK WORKS JOHN ISMAY i SON LTO ILFORD BIRMINGHAM, 10

Tel. 2420 & 2863 & s u e n c ¿ s ... Grams : G.A.RIXRDC, KEIGHLEY VICTORY WORKS, KEIGHLEY

M O T O R S 1/10 t o 5,000 H.P. a n d REWINDING TRANS­ FORMERS SPECIALISTS Pefrol Proof Non Aaema PRICE LIST ON APPLICATION illlllllM IB U IIIIfy t E L T H A M 1 i d d I e s e x I

ELECTRIC CONTROL DC. MOTOR STARTERS AUTOMATIC 8TARTER8 A.C. & D.C.

8TARTER REGULATORS OIL IMMERSED CONTACTOR STARTERS SHUNT REGULATORS ACROSS LINE CONTACTOR STARTER8 “ RIBOHM " GRID RE8I8TANCE8 CONTACTOR SWITCHE8. PUSHES, ETC. (Hetd Office) WILLIAM 6 EIPEL LTD. 156-170 BERMONDSEY STREET Telephon« : H op 0594 (3 linee) LONDON, S.E.1 September 2 1 , 1945 E l e c t r ic a l R e v ie w CLARKE,] CHAPMAN k j / d l t t i d e BOILERS

T H E G R O W T H O F A S T A T IO N

Hams Hall, City of Birmingham Electricity Supply Department.

1927 5 boiler units, each of 228,000 lbs/hr. max. evaporation. 1934 3 boilers increased in size to give 300,000 lbs/hr. 1935-8 6 boilers of 300,000 lbs/hr. evap. 1938 ‘ B ’ station designed, with pulverised fuel firing throughout. 6 boilers giving 320,000 lbs/hr. evap. Arrangement of one of two 1945 6 boilers are being installed, giving Clarke, Chapman Tri-drum the station a total steam capacity of Watertube Boilers. 6$ million lbs per hour. Evaporation - 120,000 lbs. hr. The Technical Staff of International Working Pressure 300 lbs. sq. in. Combustion Ltd. are always ready to bring their exceptional experience Heating Surface - 12,000 sq. ft. to any steam raising problem.

CLARKE, CHAPMAN & CO. LTD. INTERNATIONAL VICTORIA WORKS, GATESHEAD 8, Co. DURHAM TEL: 72271 (6 LINES) - GRAMS: 'CYCLOPS’ GATESHEAD COMBUSTION LTD London Office : 112/113 Fenchurch Street, London, E.C.3 Tel. : R oyal 2737/8. Tel. Address : ‘Cyclops,' Fen. London NINETEEN W O BURN PLACE

LONDON, W . C . I . E l e c t r i c a l R e v ie w September 21, 1945

f l

FLUXOMATIC THE NEW CHARCINC SYSTEM!

Railway Engineers and all users of traction Batteries have, for many years, sought a battery charging system that is autom atic in operation.

The Davenset Fluxom atic System has provided the a n s w e r .

W ithout manual control, a constant predeterm ined current is m aintained against a rising battery voltage. The advantages of these features, coupled with a reduction in the re­ The charging rate, having been pre-set, is unaffected charging tim e, w ill be apparent to all by norm al m ains fluctuations, and the regulation of battery users, and we shall be glad to the charge current is entirely autom atic, irrespective send full particulars and diagram s on of the battery voltage. application. iSh r S r E. PARTRIDGE WILSON & CO. LTD. MANUFACTURING ELECTRICAL ENGINEERS DAVENSET ELECTRICAL WORKS, LEICESTER. Ql

FINIAYSON BOUSFIELD S CO. LTD • JOHNSTONE • SCOTLAND September 21, 1945 E l e c t r ic a l R e v ie w 67 -AGRO BAKELITE BLOCKS THE ALTERNATIVE TO WOOD BLOCKS AS SUPPLIED TO THE AIR MINISTRY PROMPT DELIVERY

No. 5050 Round type for one 2" o r 2 \ ” 5-ampere switch. No. 7070 Round type for one 2" centre Ceiling Rose. No. 8080 Oblong type for two 2 " or 5-ampere switches. BROWN BAKELITE

Marketed by T.M.C.-HARWELL (SALES) LTD. BRITANNIA HOUSE. 233 SHAFTESBURY AVENUE, LONDON, W.C.2 Telephone: TEMple Bar 0055 (3 lines) Telegrams: “ Arwelidite, W estcent, London **

\CKYV .o .> T 3 < ÍL DAY AND NIGHT ELECTRIC SERVICE

FOR U . . n O ' QUICK RELIABLE REPAIRS AND REWINDS THE MIDLAND DYNAMO Co. Ltd. LEICESTER Phone 20172 (3 lines)

The “ M00 RH0 USE” One-piece cable connector Manufactured by SPERRYN & CO. Moorsom Street, Birmingham Established over 50 years

Also Manufacturers of General Electrical Accessories 68 E l e c t r i c a l R e v ie w September 2 1 , 1 9 4 5

'NV

one of these factories is out-of-date

i t s p l a n t is first-class, its workers skilled and willing, its manage­ ment capable—blit its lighting is wrong. All the good work, the new machinery, the careful executive control, operate in extremes of light and shadow, trying to the eyes and nerves, slowing up output . . . In the other factory, O s r a m Fluorescent Lamps provide a cool, shadowless light that is the next best rbing to daylight itself—restful, diffused, evenly distributed. And economical, too ! The 8o-watt O s r a m Fluorescent Lamp gives three times as much light as a tungsten lamp for the same amount of current. No wonder records are broken in Factory N o‘. 2 while it is always a struggle to keep abreast in Factory No. i. Stocks available at all G.E.C. Branches sr<

FLUORESCENT L A M PS ! 't DAYLIGHT and WARM WHITE

J J n of Ttu Saurai tU aric Co. Ltd. : Lttfaot Siu. : ilv m London. W .O i PRODUCT S e p tem b er 21,1945 Electrical Review {Supplement) 69 - CLASSIFIED ADVERTISEMENTS ; A D V E R T ISE M E N T S for insertion in the following R E P LIE S T O advertisements published under a ; Friday’s issue are accepted up to F irst Post on Box Number if not to be delivered to any particular j 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 | T H E C H A R G E for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in ; is 2/- per line (approx. 8 words) per insertion, such cases cannot be returned to them. The name | minimum 2 lines 4/-, or for display advertisements of an advertiser using a Box Number will not be j 30/- per inch, with a minimum of one inch. Where disclosed. All replies to Box Numbers should be j the advertisement includes a Box Number there is addressed to the Box Number in the advertisement, ■ an additional charge of 6d. for postage of replies. c/o ELECTRICAL REVIEW, Dorset House, Stam- | S IT U A T IO N S W A N TE D . — Three insertions ford Street, London, S.E.l. Cheques and Postal j 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. SITUATIONS VACANT None of the vacancies for women advertised in these COUNTY BOROUGH OF GRIMSBY columns relates to a woman between 18 and 40 unless such woman (a) has living with her a child of hers under the Electricity Department age of 14. or (6) is registered under the Blind Persons Acts, or (e) has a Ministry of Labour permit to allow her to rpENDERS are invited for the supply of: — obtain emplo-yment by individual effort. Specification Transformers for Substations (two) No. 431 L.P. Switchgear for Substation No. 432 BOROUGH OF SWINT0N AND PENDLEBURY (one 14-unit board) Electricity Department E.H.P. Switchgear for Substation No. 433 (4-unit, metal-clad) Appointment of Distribution Superintendent E.H.P. and L.P. Cable No. 434 PPLICATIONS are invited for the position of Distri­ (28.000 yds.) A bution Superintendent at a commencing salary of Specifications and Forms of Tender may be obtained £523 per annum, in accordance with Class D. Grade 3. fnm Mr. G. W. Parker, Engineer and Manager. Electri­ of the N.J.B. Salary Schedule. city Works. Moss Road. Grimsby. The appointment will be subject to the provisions of the # Tenders are to be received by the undersigned not Local Government Superannuation Act, 1937, and can­ la'ter than first post Wednesday. 3rd October. didates must have previous Local Authority Service or Municipal Offices, L. W. HEELER. otherwise be not more than 40 years of age. Grimsby. Town Clerk. The selected candidate will be required to pass a medical loth September. 1945.______2834 examination. Candidates should be Corporate Members of the Insti CITY OF MANCHESTER tution of Electrical Engineers, and have specialised know­ ledge and experience in the erection and maintenance of rpH E Electricity Committee invites tenders for the Substation Plant and Switchgear. Layout Operation and supply and delivery at BARTON GENERATING Maintenance of L.T. and E.H.T. Distribution Systems. STATION of CAST IRON COAL CHUTES FOR Public Lighting Schemes and Meter Testing Stations. BOILERS Nos. 1 to 9 (Specification No. B.148). Forms of application, together with conditions relating Specification, etc.. may be obtained from Mr. R. A. S. to the appointment, may be obtained on application to Thwaites, Chief Engineer and Manager, Electricity De­ the Borough Electrical Engineer, Electric House. Swinton. partment, Town Hall. Manchester. 2. on payment of a Lancs. fee of one guinea, which amount will be refunded on The Ministry of Labour and National Service have given receipt of a bona fide tender. permission under the Control of Engagement Order, 1945, Tenders, addressed to the Chairman of the Electricity for the advertisement of this vacancy. Committee, to be delivered not later than 10 o’clock a.m. Applications to be forwarded in sealed envelopes en­ on Monday, 1st October. 1945. dorsed “ Distribution Superintendent.” and delivered to PHILIP B. DINGLE. the undersigned not later than noon on 8th October. 1945. Town Hall. Town Clerk. VINCENT COLLINGE. Manchester, 2. Town Hall. Town Clerk. 10th September, 1945.______2802 Swinton. Lancs. 3rd September, 1945. 2746 BOROUGH OF REDCAR THE BRITISH PRODUCTION ENGINEERING Cable Laying, Etc. RESEARCH ASSOCIATION rpH E Council invites Tenders for the supply, laying and ■*- jointing of E H T. and Associated Pilot Cables. PPLICATIONS are invited for the appointment of a Forms of Tender and General Conditions may be A Director-General of the above Association which obtained from the Borough Electrical Engineer. Electri­ has been formed to conduct research on a national scale city Offices. 112. High Street, Redcar in production engineering. Tenders should be enclosed m a plain sealed envelope The Director-General will be responsible for implement­ endorsed “ Tenders for Cables and should be delivered ing the policy of the Association Council. He should to the undersigned not later than the 6th October. 1945. have an adequate knowledge of engineering in addition The Council does not bind itself to accept the lowest to the necessary commercial qualifications. Corporate membership of one of the major professional institutions or any Tender. IT Municipal Buildings. H. Caldwell. would be an advantage. Town Clerk. His responsibilities will include, in particular, adminis­ Redcar. 2848 tration. organisation, and the control of the finances of 15th September, 194jj the Association: and he will represent the Association in CITY OF SALFORD contacts with Industry and Government Departments. The detailed research work will be conducted by the nrp invited by noon on Wednesday, the 3rd Director of Research. T opinher 1945. for the supply of 6500/400 volts, A salary is envisaged in the order of £1,500 to £2.000 a nhoif 5(1 cvcle oil immersed Power Transformers. a year, according to qualifications. i Phas-. d o cy • be 0btained on application to the Applications, which will be treated in strict confidence, City56'Electrical Engineer. Electricity Department. and must be received within a month of the date of this announcement, should be sent in the first instance to Frederick Road, Salford, ^j. H Tomson_ Town Clerk The British Production Engineering Research Association. •2843 Box 2828, c/o The Electrical Review.

H 70 (Supplement) E l e c t r i c a l R e v i e w September 21, 1945

COUNTY BOROUGH OF WALLASEY MECHANICAL ENGINEER Electricity Department APPLICATIO N S are invited from Class “ A ” ex- Servicemen and others excepted from the provisions Appointment of Senior Demonstrator (Female) of the Control of Engagement Order, 1945, for the position of Mechanical Engineer in the Power Depart­ A PPLICATIONS are invited for the above appointment ment of a large industrial concern. ^ at a salary of £250 per annum plus war bonus (at Applicants, who should not be less than 35, or more than present £48 4s. 8d.). 45 years of age, should hold a British University Degree Candidates must have had a good general education and in Mechanical Engineering, or its equivalent, and must have hold a recognised diploma in Domestic Science, and possess had a sound mechanical Engineering training, and good a thorough knowledge of the use of electrical domestic experience of the operation and maintenance of the appliances: possession of the E.A.W. Electrical House­ mechanical equipment (turbo generators, feed and circu­ craft Diploma will be an advantage. They must be com­ lating water pumps, coal and ash handling plant, etc.) of petent to arrange and conduct Lecture Demonstrations, modem steam power stations of not less than 50.000 kW and advise consumers on Kitchen Planning and the selec­ installed capacity. In addition,- they must be able to tion and use of electrical apparatus. assist with the preparation of designs and specifications The salary offered is subject to the candidate possessing for new plant, and to carry out investigations and tests in the personality and ability to co-operate with architects connection therewith. Corporate membership of the and builders on the planning and construction of fitted Institution of Mechanical Engineers is also desirable. all-electric kitchens, and offers opportunities for rapid The commencing salary is £700 per annum, plus Supple­ promotion in the industry to one able to show positive ment. and the selected candidate will be required to pass a results in the development of the domestic electric field. medical examination.— Box S.982, Lee & Nightingale. The appointment will be subject to the provisions of Liverpool.______2775 the Local Government Superannuation Act. 1937. and the successful candidate will be required to pass a medical COUNTY BOROUGH OF BOLTON examination. Application forms may be obtained from the Borough Electricity Department Electrical Engineer, Electricity Offices, Wallasey Road, Wallasey, to whom applications should be submitted, Appointment of Power Station Chemist accompanied by copies of not more than three testimonials, not later than the first post on 5th October. 1945. A PPLICATIONS are invited for the position of a Power EMRYS EVANS. ^ Station Chemist from suitably qualified persons con­ Town Hall, Wallasey. Town Clerk. versant with and having experience in the analysis of 7th September, 1945. 2844 fuel, oil and water and being conversant with Boiler Feed Treatment and Metallurgy and other chemical work CORPORATION OF GREENOGK normal to Power Station practice. The salary and conditions of service will be in accord­ Electricity Department ance with the National Joint Board Schedule. Class H. Grade 8a (at present £409/£429 per annum). Assistant Mains Engineer The selected candidate will be required to pass a medical examination and contribute to the Council’s Superannua­ A PPLICATIONS are invited for the above appointment tion Scheme under the Local Government Superannuation from Electrical Engineers who are Corporate or Acts. 1937 and 1939. Graduate Members of the Institution of Electrical Engi­ Applications, giving age and particulars of experience, neers. or hold equivalent qualifications. Experience in must be endorsed “ Power Station Chemist’’ and delivered the control of workmen and the general operation of high to the Borough Electrical Engineer and Manager. Back and low voltage distribution systems is essential. Salary o’ th ’ Bank Generating Station. Bolton, not later than and conditions of service will be in accordance with the noon, 11th October. 1945. National Joint Board Schedule, the present salary being The Ministry of Labour and National Service have £445 (Class G. Grade 7). given permission under the Control of Engagement Order. The appointment will be subject to the Local Govern­ 1945. for the advertisement of this vacancy. ment Superannuation Act. 1937. and the selected candidate PH ILIP S. RENNISON. Town Clerk. will require to pass a medical examination. Town Hall. Bolton.______2801 Applications, stating age and giving full particulars of training and experience, together with copies of testi­ EAST GRINSTEAD URBAN DISTRICT COUNCIL monials. should be forwarded to the undersigned not later than Saturday, 29th September. 1945. Substation Attendant The Ministry of Labour and National Service (Technical and Scientific Register) have given permission under the rp H E above-named Council invite applications from Control of Engagement Order. 1945, for the advertising qualified persons for appointment to the above per­ of this vacancy. manent position at their Electricity Undertaking. Wages W. A. WOODROW. A.M.I.E.E., Electricity Dept., Chief Engineer and Manager. in accordance with D.J.I.C. Schedule. No. 11 Area, at Dellingburn Street. present £4 11s. lOd. for a 48-hour week. Applicants must have good experience and knowledge Greenock. 2770 of glass bulb rectifiers and switching operations up to 11.000 volts. COUNTY COUNCIL OF DURHAM Applicalions. stating agje. present appointment and experience, with copies of two recent testimonials, to be forwarded to the Deputy Clerk to the Council. Norton Education Department House. London Road. East Grinstead. Sussex, not later than the 2nd day of October. 1945. and endorsed “ Sub­ station Attendant.” Stockton-on-Tees rechnical School and Evening The Ministry of Labour and National Service have Institute given permission, under the Control of Engagement Order. 1945. for the advertisement of this vacancy. X> EQUTRED as soon as possible: Full-time Graduate 20th September. 1945. 2840 Assistant to teach Electrical Engineering Subjects in connection with Preparatory Day Engineering Courses NORTH OF SCOTLAND HYDRO-ELECTRIC BOARD and Senior Engineering Courses (part-time Day and Even­ ing) up to National Certificate standard. Candidates must A PPLICATIONS are invited for the posts of (1) Con- have had good practical engineering experience. The • tract Engineer for Civil and Hydraulic Works, and appointment will be of a temporary character in the first (2) Contract Engineer for Electrical and Mechanical instance. Works. The duties include all routine administration for Salary will be paid in accordance with the Burnham the respective types of contract. Salaries will be in Scale for Teachers in Technical Schools. accordance with qualifications and experience, and the For forms of application (which must be returned, duly successful applicants will be required to join the Board’s completed, not later than Wednesday. 10th October. 1945) Staff Superannuation Fund. apply, enclosing stamped addressed foolscap envelope, to Applications in writing, with full particulars of experi­ the Director of Education. Shire Hall. Durham. ence and qualifications and copy of testimonials or THOS. B. TILLEY. references, should be received by October 1st. 1945. by Shire Hall. Durham. Director of Education. the Secretary of the Board, 16. Rothesay Terrace. Edin­ 15th September, 1945. 2830 burgh, 3. 2806 September 2 1 , 1 9 4 5 E l e c t r i c a l R e v ie w (Supplement) 71

EAST G Rl NSTEAD URBAN DISTRICT COUNCIL A SSISTANT Sales Engineer required to cover part of - London territory for manufacturers of high-class Meter Tester and Repairer components used in electronic engineering. Age 22 to 30. Commencing salary and commission combined will amount ,A'*fm»lf«Sl' , <“ounclT invite applications from to £300/£350 per annum. Candidates should be prefer­ m a n e^ i^ itffn ,£ r »PPOintment to the above per- ably of National Certificate standard in electrical engi­ E 2 S . S fclr Electricity Undertaking, the neering. Previous selling experience not essential. Duties ™ , £ i,°9 Class B. W ages in accordance with will be to call on manufacturers of all classes of electrical DJ.I.C. Schedule. No. 11 Area, at present 2s. lid . per equipment to advise on the use of suitable components. hoar tor a 47-hour week. Permanency with good prospects for man with initiative. Applicants mast have a thorough practical and technical — Box 2797. c/o The Electrical Review. training in A.C. and D.C. Meters, Indicators and Instru­ ments. /CLERICAL Assistant. Class A ex-Serviceman. for ^ Stores Office. Must have thorough knowledge of all Applications, stating age. present appointment and electrical material. Apply— London Electrical Company. experience, with copies of two recent testimonials, to be 92. Blackfriars Road. S.E.l. 2324 forwarded to the Deputy Clerk to the Council. Norton House. London Hoad. East Grinstead. Sussex, not later /COSTING and Invoice Clerk, male or female wanted. man the 2nd day of October. 1945, and endorsed “ Meter ^ by a progressive firm of electrical installation Tester and Repairer.” engineers in the Midlands. Permanent and progressive The Ministry of Labour and National Service have position for a person able to act on own initiative. Also pven permission, under the Control ci Engagement Order. Junior to train for above. Men must be over 51. Class 1945. for the advertisement of this vacancy. A ex-Servicemen or under 18. Full details in confidence to Box 2824. c/o The Electrical Review. 20th September. 1945. 2839 T'AEVELOPMENT Engineers. One Electrical and one Mechanical wanted by Development Organisation to PENMAEN MAWR URBAN DISTRICT COUNCIL undertake technical development work connected with NORTH WALES the use of copper and copper alloys in engineering. Candidates must have good practical experience and first T»HE above Council invite applications for the post of class technical qualifications, preferably with a University Electrical Engineer at a commencing salary of £300 Honours Degree or equivalent; be corporate members of per annum, rising to £360 per annum by annual increments a professional Institution; be capable of preparing techni­ cf £20 per annum, plus War Bonus, in accordance with the cal literature and have good personality and exceptional Whitley Council Scale, which is at present £59 16s. per initiative. Salary £700 per annum, upwards according to inn am. qualifications. Permanent posts with generous super­ Terms and conditions of appointment with form of annuation. London area. "Write quoting D. 1388XA for application (which must be returned by the28th September. Electrical and C. 2736XA for Mechanical to— Ministry of 1945) may be obtained from the undersigned on receipt of Labour and National Service, Appointments Department. i stamped addressed foolscap envelope. Technical and Scientific Register. Room 670, York House. R. M. L. BEVAN. Kingsway. London. W.C.2. for application form which Council Offices. Clerk of the Council. must be returned completed by 19th October. 1945. 2820 Penmaenmawr. T'ARAUGHTSMAN required for Electrical Machines. North Wales. 2773 North Kent district. State experience . and salary required. Applicants should be over 51 years of age. Class *‘ A ” ex-Servicemen, or otherwise exempt from M.O.L. control.— Box 2786. c/o The Electrical ASSOCIATED MUNICIPAL ELECTRICAL ENGINEERS Review. (Great Britain and Ireland) and the X^LECTRICAL Department of big stores requires first- ELECTRICAL POWER ENGINEERS’ ASSOCIATION class buyer. Lamp shades and all kinds of equip­ ment. Good salary. — Box 2849. c/o The Electrical NOTICE Review. U LECI'KICAL Engineer wanted (Class A ex-Service- Bath Corporation—Appointment of City Electrical men or otherwise exempt from Ministry of Labour Engineer Control) for engineering and development work on a light electro-chemical process. At present in the London area rPtLE Standing Joint Committee of the above Associa- but may move to Provinces. Must have some light power tions requests all the 48 applicants for the above electrical engineering background, preferably with a recently advertised post. that, as the salary and condi- knowledge of physics and chemistry. Some experience t oos of employment are not in accord with the Agree- in a manufacturing concern essential. Good prospects for aicnt of the National Joint Committee of Local Authori­ advancement in an important electrical engineering firm ties and Chief Electrical Engineers, all such applications for young man with initiative and ability. Applicants •could be immediately withdrawn. shou'd write stating age. training, experience and salary W. ARTHUR JONES. A.M.I.E.E.. required to— Box 7719. A.K. Advg., 212a. Shaftesbury Secretary. Avenue. W.C.2. 2826 Standing Joint Committee. TpLECTRICAL Engineering Firm in West of Scotland A.M.E.E.—E.P.E.A. 2814 require an Assistant Bayer with knowledge of light engineering. Applicants should state age. salary required and full details of past experience in chronological order. APPLICATIONS are invited for the position of Chief Address— " 1097 ” Wm. Porteous & Co., Advertising Draughtsman of a cable works drawing office situated Agents. Glasgow. 7673 ii South London. Applications from those over 51 or "ETECTRICAL firm in the West of Scotland require -lasc A ex-Servicemen only should be made in strictest T-J first-class Chief of Progress Manager with complete xnfidence, giving details of age. previous experience and knowledge of light engineering. Experience of thi3 type alary required, to— Box 2763. c/o The Electrical Review. of work essential. Salary £600 per annum and upwards according to ability. Applicants to submit in writing list ARMATURE Winder for S.W. London, all classes A.C. of posts held in chronological order and date of birth ‘T and D.C. jobs. Good conditions of employment and Address— “ 1191 ” Wm. Porteous & Co., Advertising psmanency for experienced man. Vacancy open to Agents. Glasgow. 7672 Class A ex-Servicemen only. Immediate appointment frderred. bat we are prepared to wait. Write— Box 7564. L ' LECTRICAL Testers. Male and Female, required for r Io The Electrical Review. J-* high-class electrical machines. S.E. London. Men A RMATURE Winders required for Midlands, used to all must be under 18 or over 51 or Class A ex-Servicemen. 'A piaasp< repairs, large and small. Class A ex-Service- Apply— Box 2821. c/o The Electrical Review. men or over 51.— Box 2709. c/o The Electrical Review. TT’ LECTRICTAN required immediately by Electrical A RMATURE Winders over 51 or under 18 or Class A J —1 Contractors. London, permanency to suitable man. A PT-S^rvicem- Ti required for medium-sized repair shop. Class “ A ” ex-Serviceman or man over 51. Apply, giving Write or "call— Marry at & Place. Ltd.. 40. Hatton Garden. full particulars, to—Box 2742. c/o The Electrical Review. X^LECTRICTANS and Assistants wanted. Class A ex- Loudon. E .C .l. A &STST4NT Production Controller required by engmeer- ^ Servicemen or over 51; permanency to right men. ^ me establishment in South-East London. Previous Please write or call— J. H. Plant Ltd.. 99. St. Martini -JDenenr^with factory manufacturing electro-mechanical Lane. W.C.2. 7542 f e ^ Sd ^ ad io p r e y e d . Should be capable of under- XT' LEcTRICIANS and Assistants required for London S S fa lfn r S u c tia n control functions M,nte. giving full * housing programme. Best conditions, permanency ~} YLrSr^Ece. Qualifications and salary reqd.. to— for right men. Class “ A ” ex-Servicemen. or otherwise iX A d v g - . 212a, Shaftesbury Av. W.C.2. 2693 free.— Box 44, c/o The Electrical Review. 72 (Supplement) E l e c t r i c a l R e v ie w September 21, 1945

T^LECTRICIANS and Assistants required, permanent "]\/TAINTENANCE Electrician required. Class A ex- work for suitable men in London and Provinces. Servicemen, or over 51 years of age, must be used Class A ex-Servicemen or over 51. apply— W. J. Furse to A.C. Plant; shift work. Write, stating age. experience & Co. (London) Ltd.. 9, Carteret Street, Westminster. etc.. to the Secretary. The Polytechnic, 309 Regent London. S.W .l. 2777 Street. London. W .l. 2829 XpLECTRICIANS for general wiring installation work ly/TANAGER required for wiring department of London also Electricians for plant maintenance. Per­ electrical and mechanical engineers specialising in manencies for suitable applicants. Class “ A ” ex-Service­ industrial installations. Applicants should be experienced men or otherwise exempt from Ministry of Labour control. in handling enquiries, estimating and the control of — Dicks Ltd.. 149, High Street, Winchester. 2838 labour. Replies, giving full details of experience, age T^NGINEER required by well-known radio company to and salary required to— Box 3459. Frost-Smith Advg., 64. take charge of their drawing office and mechanical Finsbury Pavement, E.C.2. 2815 design. Must have academic qualifications and previous VERSEAS Employment. Senior Accountant required experience. Write, giving full details of experience, quali­ O by the Government of Nigeria for the Electricity fications and salary required, to— Box 7658, A.K. Advg.. Branch of the Public Works Department for one tour of 212a. Shaftesbury Avenue. W.C.2. 2690 12 to 24 months with possible permanency. Salary £750 T^N GIN EER with experience of works and production rising to £920 a year. On salary of £750 separation organisation, and control of personnel, required by allowance for married men is between £60 and £180 ac­ important company in the electrical industry in the London cording to number of children. Free quarters and passage. area, in the capacity of Assistant Works Manager. Good Candidates should be Members or Associates of the In­ prospects, salary and pension for man with the required stitute of Municipal Treasurers and Accountants or the qualifications.— Box 2708, c/o The Electrical Review Institute of Cost and Works Accountants, or hold an X^STIMATING and Correspondence Clerk. Class A ex- equivalent qualification; have had wide experience in Serviceman or not restricted by Control of Engage­ electricity finance and accounts; and be capable of ment Order. 1945, for well-known electrical manufacturers. assuming responsibility, management and organisation of Experienced in lighting, cables and electrical products. the accounting staff of a group of electricity undertak Write stating age. experience and salary required.— Box ings. Applications, which must be in writing, stating 392, c/o Dorland, 18. Regent Street. S.W .l. 2799 date of birth, full details of qualifications and experience, including present employment; also Identity and National T^X PERIEN CED Costing Engineer required, with Service or other registration particulars, and quoting practical knowledge of all types of electrical power reference number O.S.871. should be addressed to the and lighting installations. Apply, by letter only, giving Ministry of Labour and National Service. Appointments details of age, training, experience and remuneration, to— Department. Sardinia Street, Kingsway, London. W.C.2. F. H. Wheeler & Co. Ltd., Imperial Buildings, Oxford 6.9.A.9. 2841 Road. Manchester. 1. Immediately the present employ­ ment restrictions are removed, applicants will be con­ T > EFRIGERATION Me hanic required, also Electrician sidered. 2756 for new business. Excellent opportunity, per­ T^IRST-class Sales Representative required for the manencies for suitable applicants. Class A ex-Servicemen London area. It is desirable that the applicant should or otherwise exempt from M.O.L. control.— Jackson. 1, have a knowledge of Mica and Bakelite Insulation and Cavendish Avenue, Eastbourne. 7657 possess a motor car. This is a progressive position and EPRESENTATIVES required in Midlands by makers applicants should have a good education and be capable R of electric wires and cables. Must have live con­ of conducting negotiations with firms of the highest nection. Apply, with full particulars of experience, etc.. repute. State in confidence age. salary and experience to to— Box 2703. c/o The Electrical Review. — The Managing Director. H. Clarke & Co. (M/cr.) Ltd.. ALES Engineers required for A.C. and D.C. Motors Atlas Works, George Street. Patricroft. 2827 S and Control Gear: areas London. Birmingham. Glas­ X^OREMAN for paper insulated power cable shop in gow, South Wales. Apply in writing, giving full details London area. Cable making experience desirable of experience, etc. — Veritys Ltd.. 66, Quay Street. but anyone with good practical experience of similar work Manchester, 3. 2778 such as power transformer making would be considered, ALESMAN required for Glasgow branch of well-known fair education and a good understanding of the principles S large British Electrical Manufacturing concern. of modern foremanship essential, salary depending on State technical qualifications, education, experience, age, qualifications but about £450 per annum, including cost salary required.— Box 2845, c/o The Electrical Review. of living allowance. Please give full details when apply­ UPERVISING Engineer required with practical ing.— Box 2847, c/o The Electrical Review. S knowledge of all types of first-class electrical power /'2J.ENERAL Manager. Immediate appointment leading and lighting installations. Apply, by letter only, giving '-X in near future to promotion to General Manager of details of age. training, experience and remuneration, to— electric cable works. Applicants, age 35-45, must possess F. H. Wheeler & Co. Ltd.. Imperial Buildings, Oxford sound electrical engineering training followed by some Road. Manchester, 1. Immediately the present employ­ years’ experience in the manufacture of paper, rubber and ment restrictions are removed, applicants will be con­ synthetic insulated cable. Consideration will be given to sidered. 2755 suitable applicants who. while not having held a position rp iM E Study Engineer, preferably under 40 years of age. of the rank of general manager, have exercised responsi­ required by firm of electrical appliance manufacturers bility in an assistant managerial capacity. The appoint­ in Midlands area. Good modern knowledge and experi­ ment is permanent and progressive and is eligible for ence of time study methods, particularly as applied to superannuation. Commencing salary will be between hand and power presses, capstans, drillers, millers, spray­ £1.250 and £2.000 per annum, depending on previous ing processes, assembly, etc. Minimum salary £400 per experience. Applications, which will be treated in con­ annum. Applications in writing, stating date of birth, fidence. should give full details of age, education, prac­ full details of qualifications and experience (including a tical training and experience and be addressed to— Box list in chronological order of posts held), and quoting 2768. c/o The Electrical Review. Reference No. 1822. should be addressed to the Ministry X X E A D Foreman required for shop producing medical of Labour and National Service. Regional Appointments and X-ray equipment in the London area. Mechani­ Office, 237. Broad Street. Birmingham. 1. 5.9.A .11. 2800 cal and electrical experience essential. X-ray experience ^TRANSFORMER Winder required. Class “ A ” ex- desirable. Full details age. experience, present salary and Serviceman, to take charge of small winding shop, salary required to— Box 7601, c/o The Electrical Review. winding Transformers of all types up to 100 kVA. Write, TN VOICING and Costing Clerk required by large firm giving all details, age. experience, salary required, etc.. to of electrical contractors in N.W. London area. Must — Box 2836. c/o The Electrical Review. be able to act on own initiative. Progressive and well- nnW 0 Electrical Inspectors (Class A ex-Servicemen or paid position to capable male applicant who is not re­ otherwise exempt from Ministry of Labour Control), stricted by Control of Engagement Order. 1945. Applica­ single men preferred, to carry out routine tests and tions also considered from Class A members of forces. inspections of and to prepare reports on complete AC. Apply, stating age, experience and salary required, to— and DC. electrical installations at large and small factories Box 2803, c/o The Electrical Review. and depots in London. Scotland and the Provinces. Must l\/TETHODS Engineer or Cable Estimator to prepare be prepared to travel and to work night or day as operation schedules and route sheets and estimate required. Reply, by letter only, giving details of times for each operation. Knowledge of cable making experience and sa’ary required, to— U. D. Engineering desirable, but anyone having good general education with Co. Ltd.. Cumberland Avenue, Park Royal, N.W .10. a varied experience of methods and operation layout work 2825 will be considered. Some knowledge of time study highly T\^AN TE D . Works Manager for electrical engineering desirable. Permanent position London. Fair salary to ▼ * company. Must be good administrator and capable be agreed depending on age and qualifications. Reply, of controlling labour. Knowledge of switchgear an advan­ giving age and full details of education and experience, tage but not essential. Write for particulars to— Box to— Box 2798, c/o The Electrical Review. 2702. c/o The Electrical Review. September 2 1 , 1945 E l e c t r ic a l R e v ie w (Supplement) 73

W h ? ^ H0USE1iIAN-Packer and Storekeeper-Counter- /CONTRACT Engineer. Assoc.Brit.I.R.E., Patentee (27), „roforrïJi ’ squired. Permanent positions, past experience seeks appointment, Radio or Electrical, preferably preferred. Over 51 or Class A ex-Servicemen only. export trade. Good workshop, D.O., sales and export Write stating wages, etc.. to— Box 2818, c/o The experience.— Box 7581, c/o The Electrical Review. Electrical Review. TAESIGN ER and patentee Domestic Electrical ELL-known company marketing necessary insulating Appliances desires contact manufacturers established materials has vacancy for technically Qualified Re­ or wishing to enter industry, view to arrangement» for presentative to contact principal users for sales research designs, consultations regarding manufacture, marketing, and development. Must be conversant with design, etc.— Box 7648, c/o The Electrical Review. manufacture and operation transformers, switchgear, con­ T^LECTRIC Cables. Advertiser (33) desires progressive densers and cables. Permanent and progressive post for position at home or would consider later appoint­ energetic man. Salary, expenses and car. Full particulars ment abroad. 11 years C.M.A. Cable Manufacturers. career and salary required to— Box 2682. c/o The Elec­ Test and estimating experience including home and export trical Review. sales correspondence and procedure. M.A.S.E.E.— Box ORKING Manager required by small company em­ 7669, c/o The Electrical Review. W ploying 60-70 hands in electrical department. Must "p'LECTRICAL and Mechanical Charge Engineer, 51 MW. have flrst-class knowledge of small induction coil winding A.M.I.E.E. (34). good disciplinarian, keen, ambitious, and test gear, also light assembly work. Good salarv and seeks responsible position, technical administrative, home percentage of profits. N.W. London. — Box 2704, c/o or abroad. Excellent references.— Box 7597, c/o The The Electrical Review. Electrical Review. X?LECrrRICAL and Mechanical Engineer. B.Sc. (Hons.). A.M.I.Mech.E.. G.I.E.E. (27), workshops, drawing APPOINTMENTS FILLED office and design experience, desires post as designer, Dissatisfaction having been so often expressed that un­ preferably on rotating electrical machinery.— Box 7578. successful applicants are left in ignorance of the fact that c/o The Electrical Review. the position applied for has been filled, may we suggest X^LECTRICAL Engineer, age 42 with release. Higher that Advertisers notify us to that effect when they have J-J National Certificate. Experienced testing and arrived at a decision? We will then insert a notice free installation transformers, mercury arc and metal rectifiers, of charge under this heading. cinema sound and projection equipment. Seeks steady TALYBRIDGE, Hyde, Mossley & Dukinfield Transport permanent post at good salary. London district pre­ S Board— Assistant Maintenance Engineer and a Switch­ ferred.— Box 7645, c/o The Electrical Review. board Attendant. Xj^LECTRICAL Engineer, B.Sc., A.M.I.E.E. (44) seeks permanent position London area. Available shortly. Extensixe experience in all types of electrical installations, SITUATIONS WANTED including M.V. and H.V. overhead and underground dis­ tribution, switchgear. lighting and power schemes. Mechanist Q.M.S. recently released from the Technical and commercial administrative experience, A Engineer Services in Class “ A .” 39. Grad.I.E.E., including sales. Present salary £800. Replies to—Box Mero.A.I.E.E., U.C.L. Diploma in Electrical Engineering, 7604, c/o The Electrical Review. 12 years’ experience civilian and military covering T^LECTRICAL Engineer (34), French, 5 years in electric motor. D.O. and test, materialstest and instrument metallurgical concern North London. Previous calibration, switchgear research, engineering estimating, experience French State Railways and wire drawing electrical installation supervision, design and installation industry, used to responsible positions needing organizing overhead lines and small power stations, design of trans­ ability, drive and personality, very adaptable, seeks pro­ formers to 125 kVA, supervision of labour (British and gressive position with British firm, U.K. or Dominions Native), desires post with supply authority in mains dept. Australia. New Zealand. Canada or South Africa). Elec­ Midland area preferred. Salary £400 p.a.— Castellan. trical or metallurgical; technical or commercial.— Box “ Burnside.” Rolleston, Burton-on-Trent. 7631 7628, c/o The Electrical Review. A DMIRALTY appointment ceasing, six years South T^LECTRICAL Engineer (25), highest technical training, Wales factories, sales, administration and transport -L-J wide practical experience, requires position firm experience, seeks post as Branch Manager, would consider engaged agricultural electrical installations, Oxon.. Bucks., good agency.— Box 7656. c/o The Electrical Review. Berks.. Glos. area. Details— Box 7572, c/o The Elec­ A DVERTISER. Accountant aged 35. for many years in trical Review well-known contractor’s office, desires change. T^LECTRIGAL Engineer, now demobbed after 6 years’ Thoroughly experienced in preparation of tenders and ■U service, lost own contracting business in 1940, not administration of large contracts in all stages including starting »again, requires position with established firm final accounts. Responsible position with prospects of where previous experience of all branches of contracting further advancement required by man with drive and can be used to mutual advantage. Investment considered initiative.— Box 76*66, c/o The Electrical Review. in sound business.— Box 7583. c/o The Electrical Review. A .M.I.E.E. (31), released end September, desires per- T^LECTRICAL Engineer (32), Higher National Certifl- manent and progressive post with consulting or cate. Electrical and National Certificate (Mechanical), manufacturing engineers. 5 years’ apprenticeship. Good recently returned from abroad, seeks appointment with executive and organising abilities. Extensive experience Electricity Supply Undertaking. Extensive experience in in ship’s installation, design, production and manufacture mains development, construction, installation and opera­ of machinery and associated equipment.— Box 7660. c/o tion.— Box 7582, c/o The Electrical Review. The Electrical Review. T^LECTRICAL Maintenance Engineer, 29, requires A .M.I.E.E., D.F.H. (30). Public School, 8 years’ position. Graduate I.E.E. Higher National Certi­ experience Babcock & Wilcox High Pressure Boilers ficate endorsed with workshop organisation and manage­ and Parsons Turbo Alternators in power stations in ment, and industrial administration. 1st and 2nd Class India, desires change preferably Far East. Existing post Certificates of Association of Mining Electrical Engineers. involving administration, mains and power station Box 7658, c/o The Electrical Review. operation, including erection and commissioning all types LECTRICAL Staff Foreman, with wide experience on above plant. Hindustani spoken fluently. Free for re­ E large contracts, requires post in West Midlands. engagement within six months.— Box 2822. c/o The Used to estimating, costing, organising labour and Electrical Review. materials. Full responsibiity. Box 7622. c/o The Elec­ A N Electrical Engineer. B.Sc., 31, good all-round trical Reveiew. practical experience of rheostatic controls, rotating NGINEER, aged 3 1 . desires executive position in a machinery, multi-range electrical instruments, etc.. desires E factory organisation; 9 years’ practical experience progressive position.— Box 7653, c/o The Electrical electrical manufacture, 3 years’ production planning, esti­ Review. _ mating and rate fixing, 2 years investigator for M.A.P., HARTERED Electrical Engineer (35), nineteen years’ Adm.. M.O.S., etc., into methods and costs of production. C experience heavy electrical manufacturing industry— Vicinity London preferred.— Box 7577, c/o The Electrical works, D.O., estimating, sales, administration— wide know­ Review. ledge home and export markets, extensive connections X^X-R.E. Capt. (Inspector of R.E. Machinery), 27 Home Counties, offers services to firm requiring efficient years in ranks and commission, requires post with Technical Sales Administrator, home or abroad.— Box reasonable salary. Any district with good chance of 7608 c/o The Electrical Review. obtaining accommodation for 2 adults and 3 children. /''IL'ASS A ex-Officer R.E., A.M.I.E.E.. 25 years’ Qualifications, 27 years’ experience in electrical and V-^ civilian experience Supervising Engineer with first mechanical engineering as applicable to internal wiring, class contractors Grid. H.T and L.T. O/H lines. H.T generation, distribution. Diesel and petrol engines, small cables, substations and ancillary gear Seeks permanent refrigerator plants, central heating, and some knowledge and nrnffrpssive responsible position. North preferred but of motor vehicle engineering. City and Guilds Certificates In y fixed arel suitable. Present salary £650.-Box 7646. held for above subjects.— Box 7664, c/o The Electrical c/o The Electrical Review. Review. 74 (Supplement) E l e c t r i c a l R e v ie w September 21, 1945

“p'NGINEERING Executive (30). A.M.I.E.E., Int. GEORGE COHEN, SONS & CO. LTD. A.M.I.P.E. with sound industrial experience, desires position with Electricity Supply undertaking, min. re rauneration £500 p.a.— Box 7643. c/o The Electrical for Review. GUARANTEED ELECTRICAL "C^XPORT Manager, A.M .I.E.E. (38), good education, . works training, wide experience, requires • position with progressive firm.— Box 7668, c/o The Electrical PLANT. Review. T^OREMAN, radio production, age 35. 18 years' MOTORS, GENERATORS. experience, seeks change, conversant, bonus and conveyor systems.— Box 7662, c/o The Electrical Review. SWITCHGEAR. /^J_ENTLEMAN, shortly redundant war work, desires position as outside sales representative in electrical etc. or radio trade. 18 years' previous experience, excellent connection with industrial firms, corporations, and high- class retailers throughout north of England, North Wales, Merseyside, etc.— Box ,L. 18, Lee & Nightingale, Liver­ WOOD LANE. LONDON. W.12. pool. 2823 Telephone: Shepherds Bush 2070 'J.RADUATE I.E.E. (30) requires position as Assistant and C* to Works. Sales or General Manager of electrical STANNINGLEY, NEAR LEEDS. manufacturers. Experience with production of batteries, cables, wires. Familiar with technical correspondence; Telephone: Pudsey 2241. administrative and executive experience.— Box 7573, c/o Established 1834. The Electrical Review. "YT.Sc. Honours degree electrical engineering, 16 years’ experience, generators, motors, electrical instru­ ments and electronics, own patents, wants to change REBUILT MOTORS AND GENERATORS position.— Box 7661, c/o The Electrical Review. RODUCTION Engineer in light electrical manufacture. P Qualified electrical engineer. Power engineering ¥" ONG deliveries can often be avoided by purchasing experience. Requires appointment as Works Manager or -U rebuilt secondhand plant. We can redesign or replace similar position. Available October. Home or Abroad.— surplus plant of any size. Box 7603, c/o The Electrical Review. UALIFIED Electrical Engineer (38). technical and SEND US YOUR ENQUIRIES. Q administrative experience, seeks position; extensive OVER 1.000 RATINGS ACTUALLY IN STOCK HERE. industrial and suppy undertaking experience; positions held— works electrical engineer, district engineer and DYNAMO & MOTOR REPAIRS LTD., consumers’ engineer.— Box 7629, c/o The Electrical Review. Wembley Park, Middlesex. ADIO Sales Engineer, age 34, wide experience com­ Telephone: Wembley 3121 (4 lines). R mercial communication and all aviation radio systems, good organizer, ex-F/L R.A.F., 3£ years radio Also at Phoenix Works, Belgrave Terrace, Soho Road, systems experimental test pilot. 2,500 hrs. all types air­ craft. seeks situation radio sales exploitation, planning, Handsworth, Birmingham. tendering, England. Portugal, S. America (Buenos Aires Telephone: Northern 0898. preferred) or New Zealand.— Box 7651, c/o The Elec­ 26 trical Review. .E.M.E. Officer, now serving in Far East, age 27. R release group 26. Grad.I.E.E., Diploma in Electrical WATER TUBE BOILERS IN STOCK Engineering, 2 years’ workshop company commander, keen and willing to learn, desires to contact progressive firm in Two 55.000 lbs. evaporation. 270 lbs. W.P. U.K. able to offer position with prospecte of advancement. Two 25.000 lbs. .. 250 lbs. — Box 7576, c/o The Electrical Review. Two 25.000 lbs. .. 175 lbs. Three 20.000 lbs. .. 175 lbs. Q A L E S and Estimating Engineer, excellent connection Two 16.000 lbs. .. 190 lbs. with consumers paper cables and possessing compre­ One 12.000 lbs. ,, 200 lbs. hensive knowledge of trade, seeks executive position.— Box 7571. c/o The Electrical Review. One9/10.000 lbs. .. 200 lbs. Q U PERVISO R, Electrical and Mech., installations, all We install complete, including- brickwork. Economisers. classes, survey, planning, construction, maintenance, Pumps, Piping Valves. Generating Sets and Motors in labour organiser, drive car; 25 years’ experience.— Box stock. Please send us your enquiries; we can give 7598. c/o The Electrical Review. immediate delivery. "YTOUNG Electrical Engineer. 18 years’ practical and commercial experience, requires responsible position, BURFORD. TAYLOR & CO. LTD., preferably with part interest; moderate investment avail­ Boiler Specialists. Middlesbrough. able; any proposition considered.— Box 7621, c/o The Telephone: Middlesbrough 2622. Electrical Review. FOR SALE BURDETTE & CO. LTD. Traders buying and selling hereunder must observe the Stock Restriction of Resale Order. S. R. & O. 1942 No. 958. Reconditioned A.C. and D.C. Motors and Starters Equal to New. COUNTY BOROUGH OF HUDDERSFIELD STONHOUSE STREET. CLAPHAM. S.W.4. X X UD D ER SFIELD Corporation have for disposal, and Day and night service. MACaulay 4555. offers are invited for the purchase of. a 34-panel 17 Metropolitan-Vickers type K2 and K2C Moulded Stone Cellular Duplicate Busbar, 3-phase, 6.600 volts Switch­ board. consisting of 4 incoming 1.500 amp. units. 3 air break bus-section units. 4 busbar couplers. 26 100/400- COX & DANKS LTD. amp. feeder units, fitted with O/C and E /L protection: for remote mechanical and solenoid operation. ELECTRICAL EQUIPMENT These units are at present in commission and may be examined at the St. Andrew’s Road Generating Station by appointment. MOTORS. DISTRIBUTION BOXES. Eight units will be available in November of this year M.G. SETS. SWITCHGEAR. and the remainder from time to time during the next 12 months. Large Stocks— Prompt Delivery. Further particulars on application to F. A. Ellis. M .I.E.E., Engineer and Manager, Electricity Offices. FAGGS ROAD. FELTHAM. MIDDX. Market Street, Huddersfield. 2835 Tel. Feltham 3471/3. 72 September 2 1 , 1 9 4 5 E l e c t r i c a l R e v ie w (Supplement) 75

STEAM GENERATING PLANT .C. Motors, l/50th h.p. to 10 h.p., from stock. Also A D.C.— The Johnson Engineering Co., 86. Great Port­ land Street. London. W.l. Tel. : Museum 6373. 57 350*R F T r tBJ L L I 5 S / WESTINGHOUSE; 570-h.p. ERIAL Cables, all sizes quoted for, good deliveries.— rsujL/Libfcs vertical compound engine. sdppH ^7 ^ A Edwardes Bros., 20, Blackfriars Road, London. 150/160 lbs., belt driving WESTINGHOUSF S.E .l. 7675 50 cycles Alternator. LMOST new Dynamo, 2,150/3,000 amps., 50/70 volts, R F T T T S S v^ L L ! S S / MATHER & PLATT; 570-h.p. A 350 r.p.m., self-excited, from stock. — Electroplant fen lir ,!■ eli ‘cal c,OI?polmd engine. 450 r.p.m., steam Co., Wembley. 2811 tori fihro Available.) 15° ‘kW' 250'Volt D C- EST English Cables. 1/.044 up to 127/. 103, deliveries. Edwardes Bros., 20, Blackfriars Road, London, 100-kW HOW DEN/DICK K E R R ; 145-h.p. HOWDEN B vertical compound engine, 450 r.p.m., steam 150 Jh? S.E.l. 7676 direct coupled to 100-kW, 500-volt D.C Gener “ or ARBONS, large stocks assorted sizes, solid and cotred.— 75-kW BELLISS / ELECTROMOTORS :120hp. BEL- C Edwardes Bros., 20, Blackfriars Road, London, LISS vertical duplex engine, 525 r.p.m., steam 180 lbs. S.E.l. 7677 direct coupled to 75-kVV, 220-volt D.C. Generator /CENTRIFUGAL Pump by Pulsometer, 4-stage, 300 Above offered overhauled and complete with all ^ g.p.m., 277 ft. head, 1,000 r.p.m. Just completely accessories. rebuilt by makers.— Fyfe, Wilson & Co. Ltd., Station NEWMAN INDUSTRIES LIMITED, YATE, BRISTOL Works, Bishop’s Stortford. 2832 2731 /CRYPTO Motors. 400/3/50 con. rat. 7— 1/4, 3— 1/6, 2— 1/3, ll— 1-h.p., 7 switches, £36. 36 Bi-Muti Fittings as used by Councils for street lighting, etc., £36, ELECTRIC MOTORS AND DYNAMOS or offer.— Box 7674, c/oThe Electrical Review. "P\.C. Shunt-wound 3-h.p. Motor. Brand new unused VATE hold one of the largest stocks of New and Second- Batwin.— The Chrislea Aircraft Co., Hounslow, ’ " hand Motors. Secondhand machines are thoroughly Middlesex. HOU. 2345, ex. 143. 2887 overhauled. Inspection and tests can be made at our “p'NGINEERING Plant— Atlas 5" Centre Lathe, Hilmor Works. Pipe Bending Machine, Warner-Swassey 1" Capstan, etc. Miller, shafting, sundries. View by appointment.— For Sale or Hire. Send your enquiries to :- Terminus 1077. 2816 /C AS Engine (Crossley), rated 14 h.p.. Tank, all ac BRITANNIA MANUFACTURING CO. LTD.. cessories complete with 100-v.. 80 amp. D.C. Dynamo, Belting, etc. View and offer— 243 High Street, 22-26. BRITANNIA WALK. Orpington. Kent. 2804 CITY ROAD. LONDON. N.I. /C ENERATING Sets for sale, 18 kVA, 400/3/50 petrol: Telephone: 5512-3 Cleirkenwell. 13 24-kW, 220-v. D.C. Crude Oil Set.— Fyfe, Wilson & Co. Ltd.. Bishop’s Stortford. 2831 AC. MOTORS IGGS 1-h.p. Motor and Starter, 230/1/50, 705 r.p.m. H Also starter for 3 h.p., 200/1/50.— Box 7665, c/o by Brooks, for sale. NEW. The Electrical Review. Nine 12 h.p. 1.440 r.p.m. 400/3/50 Squirrel Cage TNSU-Glass covered Plain or Enamelled Instrument Six 12 h.p. 1.440 r.p.m. 400/3/50 Slip Ring Wires, No. 18 s.w.g.. No. 40 s.w.g., stock deliveries.— SECONDHAND. Saxonia, Roan Works, Greenwich, S.E.10. 29 One 35 h.p. 1.440 r.p.m. 400/3/50 Slip Ring ARGE range of electrical accessories now available. Also Starters for all of the above. L Electric Fires, Metal-made and Plastic Table Lamps (excellent range), Floor Standard Lamps, variety of Lamp W rite: Shades, Electric Irons, Wireless and Lighting Batteries. A. C00KSLEY & CO. LTD. Write for latest list.— Brooks & Bohm Ltd., 90. Victoria 21/25, Tabernacle Street, E.C.2. 2819 Street, London. S.W .l. 2629 EAD-covered and Armoured Cables. P.I. and V.I.R., L various special lines at low prices.— Edwardes Bros., COX & DANKS LTD. 20, Blackfriars Road, London. S.E .l. 7678 for ESLIE Dixon & Co. for Dynamos. Motors, Switchgear, MOTORS AND DYNAMOS, AC. AND D.C. L Chargers and Telephones.— 214, Queenstown Road. Battersea, S.W.8. Telephone, MACaulay 2159. Nearest DISTRIBUTION BOXES, SWITCHGEAR. Rly. S ta .: Queen’s Road, Battersea (S.R.). 18 ly/TOTOR Generator Set comprising 320-h.p., 415-volt, Large Stocks— Prompt Delivery. 3-phase, 50-cycle, auto-synchronous A.C. Motor, Visitors always welcome. direct coupled to two 100-kW, 105-volt Verity D.C. Dynamos. Can be seen running under load.— Britannia FAGGS ROAD. FELTHAM. MIDDX. Manufacturing Co. Ltd., 22/26, Britannia Walk, London, Tel. Feltham 3471/3. N.I. 2759 1%/TOTOR Generator Set. 400 volts, 3-phase, input 0/50 IL L volts, 125 amps, output, direct coupled, separate ELECTRIC FIRE SPIRALS exciter.— A. W. Barker, Colnbrook, Slough. 7611 ly/TOTOR Generator Sets and Convertors, all sizes and 240 v., 500 w., 7£d. each; quantities over 12 gross. 63d. ea. voltages from 4 kW up to 500 kW in stock.— 750w., 9d...... 7£d. ea. Britannia Manufacturing Co. Ltd., 22/26, Britannia Walk, 1,000 w., lid ...... 9d. ea. City Road, London, N.I. Telephone, Clerkenwell 5512, Heating Elements made to customers’ requirements. 5513 & 5514. 28 Export enquiries invited. 'YTAMEPLATES, Engraving, Diesinking, Stencils, Steel MIDDLESEX ELECTRON CO. LTD., Punches.— Stilwell & Sons Ltd., 152, Far Gosford 199, High Street, Hampton Hill, Middx. Street. Coventry. 14 Molesey 3541. 7663 ZO N E” Generator, small domestic type. 200/250 v., O as new, £6.— Phone 1274 Walton-on-Thames. 7659 HONE 98 Staines. 60-kW Allen Crude Oil Set. 220 vo. large stock of Searchlights (sale or hire), also Winches P D .C.: 130-kW Diesel Set. 110 vo. D.C. (now running): A of our self-sustaining type. Hundreds of thousands Three-throw High Pressure Pump, 34" x 6", 700lbs.w.p.: supplied during the last 40 years to Government depart­ ments corporations and innumerable traders. Mirrors. 34-kW Steam Generating Set, 220 vo. D .C.; 20-h.p. Ruston Lenses A I D Turnbuckles. etc., also surplus Carbon Rods. Oil Engine and 7/9-kW, 110-vo. Dynamo: 50-kW Steam Ebonite and Fibre— London Electric Firm, Croydon 42 Generating Set. 440/220 vo. D.C.— Harry H. Gardam & A C and D.C. House Service Meters, all sizes, quarterly Co. Ltd.. Staines. 60 J\ ' nreDayment, reconditioned, guaranteed one year. ORCELAIN Cleats, 2 and 3 groove, various sizes ex Rpnairs and recalibrations.— The Victa Electrical Co.. 47. P stock, price list.— Edwardes Bros., 20. Blackfriars BaU^r^ea High Street. S.W .ll. Tel. Battersea 0780. 19 Road. London, S.E .l. 7679 A C Im d D.C. Motors, all sizes, large stocks, fully ORCELAIN Insulators, various sizes in stock, galv. A ;„* rant,eed— Milo Engineering Works. Milo Road. P spindles.— Edwardes Bros., 20, Blackfriars Road. F ^ t n w ich S.E.22 (Forest Hill 4422). 7528 London. S.E.l. 7680 East liui generating Set, input 400/3/50. slip-ring type OTARY Converters in stock, all sizes: enquiries h i H o l m e s , coupled to dynamo, 150 kW. 230 v.. 500 R invited.— Universal Electrical, 221, City Road. r p m — The Electroplant Co.. Wembley. Middx. 2810 London, E.C.l. 16 76 (,Supplement) E l e c t r i c a l R e v ie w September 21, 1945

Q E V E R A L Telescopic Tower Ladders ready for essential A RMATURE Coil Winding Machine for Coils up L r ^ work. Extensions, Trestles and Steps to order.— 100 h.p.. new or secondhand.— Box 7650. c/o The Shaftesbury Ladders Ltd., 453. Katherine Road E 7 Electrical Review. Grangewood 3363. ' 15 ^ IR E N S . " Gent ” 4-h.p. double-ended electric sirens. I_CNGINEERING Technical Books (new or secondhand) ^ suitable for A.C.. one. two or three-phase, and D.C. ^ wanted in any quantity. Attractive cash offers. Call supplies on voltages ranging from 200 to 480, for sale in — Third floor. 356. Oxford Street. W .l. or “ Stoneleigh.” small numbers to purchasers having a specific use for them. St. George's Avenue. Weybridge. 62 No dealers. Equipment includes switchgear and anti-frost F> OTARY Convertor, input 6.600 volts. 3-phase, 50 heaters and thermostats. For further particulars and _ cycles, output 400/460 volts D.C. complete with appointment to inspect on site, apply to— The Police suitable transformer and starting panel. Will consider Engineer. New Scotland Yard. London. S.W .l. 2757 units of one. two or three thousand kilo-watt capacity. Full particulars and price to— Box 2808, c/o The Elec­ S P E C IA L line Bell and Telephone Wires, also Screened trical Review. wires. large quantity, clean.— Edwardes Bros.. 20. Blackfriars Road. London. S .E .l. 7681 ANTED, tack numbers of Electrical. Engineering Q T A F F Time Cheeking and Juo Costing Time Recorders * * and Chemical Scientific Periodicals. Also old ^ (all makes) for quick cash sale. Exceptional con­ electrical magazines, periodicals and catalogues.— P. dition. Write— Box 528. Smiths. 100. Fleet Street. Firestein, 28. Spencer Avenue, Earlsdon. Coventry. 2833 London. E.C.4. 31 A \ rANTED for South African market. Electric Kettles. T ’ etc. Quotations to— Box ZL.609, Deacons Adver­ TEAM Turbine. Fraser & Chalmers' Standard Multi- tising. 36. LeadenhaQ Street, E.C.3. 2637 S Stage Back Pressure Steam Turbine. 600 h.p.. coupled to David Brown Reduction Gear. 6.000 to 300 A T ’'ANTED. Rotary Converters, any size.— Universal. r.p.m. In excellent secondhand condition.— London Brick ’ * 221. City Road. London. E.C.1. 22 Company Limited. Africa House, Kingsway, London. YA J ANTED— Lister Diesel Generating Set. about 22-kW W.C.2. 2787 ’ * 250 volts. D.C. Must be in first-class condition and WITCH and Fuse Units. Conduits and fittings, works reasonable price.— Peacock. High St.. Denbigh. Denbigh S requirements stocked.— Edwardes Bros.. 20. Black­ shire. 7&U friars Road. London. S .E .l. 7682 W A N T E D . Kohler Sets. 1.500 watt, 110 volts, com­ WITCHBOARDS suitable for dynamos and alternators, plete.— G.P.U. Ltd.. Wembley. Middx. 2812 S all sizes from 100 amp. up to 1.500 amp.— Britannia T i or 10-kVA. 400-volt, three-phase. 50-cycles Revolv- Manufacturing Co. Ltd.. 22/26. Britannia Walk. London. 2 ing Field Type Alternator, complete with exciter N-l 25 and regulator.— Yorkshire Electric Transformer Co. Ltd.. nHRANSFORMER Lead-in Wire, 7/38 and 14/38 s.w.g.. Empire Works. Thornhill. Dewsbury. 2813 Insu-Glass finished, various colours, stock.— Saxonia. -h.p. slipring. 400/3/50. ball-bearing Motor. 960 Greenwich. S.E.10. 34 ^ r.p.m.: 150-h.p. ditto, at 330 r.p.m .— Electric rp .R .S . Cables and Flexibles. Welding Cables supplied.— Machinery Co. (Manchester) Ltd.. New Union Works. Edwardes Bros.. 20, Blackfriars Road. London. New Islington. Ancoats. Manchester. 2691 S.E.l. 7683 ^TRANSFORMERS, single and three-phase. AH types up to 10 kVA.— Woden Transformer Co. (Phone. AGENCIES Bilston 41959), Moxley Road. Bilston. Staffs. 12 rp W O 240 volt. 20 kilo-watts. Higgs D.C. Generators. A well-known large British Electrical Manufacturing 1600 r.p.m., together with switch-board with over­ concern is prepared to consider applications for their load and reverse current trips; switches, volt and amp. North of Ireland Agency from established agents. State meters. Also one 80 volt. 4£ kflo-watts. Higgs D.C. fullest particulars.— Box 2846. c/o The Electrical Review. Generator. 1600 r.p.m. together with switch board with A DVERTISER with good Provincial connections, and overload and reverse current trips: switches, volt and Servcie Staff in E re. desires Agencies for Household amp. meters. All in excellent condition. Also one 5 h.p. Appliances. Ice Cream Refrigerators and Storage Cabinets. Ball 240-v. D.C. Motor, one 3-kW Rotary Converter. Radio, including public address equipment. Accumulators. 240 v. D.C. to A.C.. one 5-h.p. 240-v. Higgs D.C. H.T.'s. etc.. Factory Equipment. Motors. Starters, etc.— Motor, plain bearing 1400 r.p.m. complete with remote Box 7667. c/o The Electrical Review. control. Igranic Auto Starter with remote control. Offers A GENCIES required. South of England, in eluding the to— Commodore Cinema. Orpington. Kent. 2805 London area: (a) Cables: (b) Small Switchgear: (c) Exhaust Fans. Single-phase. 220/230v, air Transformers: or any lines suitable for distribution for M displacement 1900 cu. ft. /min. Delivery ex stock. wholesalers’ business.— Box 40. c/o The Electrical Review. Price including carriage £12 2s. 6d. Deposit on returnable case £2 extra. Further details and sketch gladly sent. A GENCIES required for London. South of England, for Southern Ignition Co. Ltd.. 190 Thornton Road. Croy­ the following: (1 ) Domestic electrical appliances: don. 'Phone THOmton Heath 4276-7-8. 75 (2) Brass electrical accessories, switch plugs, etc.: (3) Con­ “I /A /yh .p . “ Laurenco Scott” Slipring Motor. 400/3/50. duit. Advertisers have clientele with every wholesaler in T w v/ screen protected, ball bearing. 930 r.p.m. the territory mentioned. Immediate turnover can be Complete with " Allen West ” oQ immersed Starter. guaranteed. E ther commission or baying basis. Post­ Date 1941.— Stewart Thomson & Sons, Fort Road. war arrangements considered. — Box 64. c/o The Eec- Seaforth. Liverpool. 21. 55 trical Review. 1 ¿IfYkVA Beiliss/Crompton Alternator. 400/3/50. 4- A GENCIES wanted by ex-officer R.E. in Engineering ^ wire. Seen running.— Stewart Thomson & Sons. ■^7 " an4 Allied Trades. Good connection in electrical, Fort Road. Seaforth. Liverpool. 2 1. 47 shipbuilding, engineering, building and industrial con­ cerns throughout Scotland. Pre-war E.W .F. member.— 2 " i O ’kVA Alternator. 400 volts. 3-phase, 50 cycles. 750 revs., with direct-coupled exciter: also two 250- Address “ 1.299.” Wm. Porteous £ Co.. Glasgow. 7671 kW Rotary Converters, with transformers and switchgear. A GENT with good Scottish connection wishes representa- input 6.600 volts. 3-phase. 50 cycles, output 420/210 volts ~ ~ tion.— Box 7562. c/o The Electrical Review. D.C.— Midland Counties Electrical Engineering Co. Ltd.. L ’ LECTRICAL Engineering Company operating in the Grice Street. Spon Lane. West Bromwich. 36 North-West area, with good connections in the in­ dustrial sphere and with storage facilities, desire to estab­ lish agency relations with manufacturers for the sale and ARTICLES WANTED servicing of Power Factor Correction Equipment.— Box 43. c/o The Electrical Review. T TV'E Outside Representative, with 20 years’ experience REQUIRED with first-class current connection in Scotland and Ireland with all the leading wholesale houses, wishes to represent manufacturers in Aluminium. Hardware and Electrical Appliances. First-class credentials can be furnished. Address — ” 1091.” Wm. Port eons i Co.. equired, automatic coil winding Glasgow. 7652 R MACHINES FOR ELECTRICAL COIL WINDING.— Box 38. c/o The Electrical Review. "A ■" AN I F ACTURERS’ Agents, covering the whole of Great Britain and Colonies, are desirous of contact­ ing manufacturers with a view to sole selling rights (either 38 commission or baying), post-war arrangements considered. — Box 23. c/o The Eectrical Review. A rANUFACTURERS of Eectrical Appliance etc.! A CETATE and other thermoplastic scrap: polythene — Distribution to wholesalers of long standing ensures ^ and P.V.C. in any form; also scrap cable and in­ a sound market. Agent with well-established connection sulated wire; urgently wanted.— Elton Levy & Co. Ltd.. offers services in Yorkshire. Northumberland and Durham. 18. St. Thomas Street. S .E .l. 30 — Box 7655. c/o The Eectrical Review. September 2 1 , 1 945 E l e c t r ic a l R e v ie w (Supplement) 77 R E^ ? ^ NTiIAT1VES Rood connections required MISCELLANEOUS Rnv o/«na5ln^.,L^ ps- Very favourable terms— Si ? xhe Efectrioal Review. LONDON EXHIBITION 0 Manufacturers of Electrical Goods desirous of dis- dir« ct to the retail market. A well-estab- of Jished Agent offers services of salles organisation for NEW ENGINEERING PRODUCTS Yorkshire.— Box■ ' 654, c /o The Electrical Review. nuLicjoiv Liii.Ki3 Agents wanted, most areas, to take A N behalf of various manufacturers, and w up our range of Decorative Electrical Fittings. We ” for the convenience of many customers are actual manufacturers.— Leon’s. 153, High Street. from Abroad, as well as at Home, a well- Epsom. Surrey. Epsom 2400. 7491 known Engineering Concern will shortly open, in their large premises, an Exhibition BUSINESSES FOR SALE AND WANTED of new Electrical and Mechanical Plant and A DVERTISER wishes to acquire sound retail Electrical Associated Equipment, with facilities for and Radio business in busy main thoroughfare, practical demonstration under the super­ London or suburbs.--Box 2807. c/o The Electrical Review. vision of their skilled Engineering Staff. EGISTERED Electrical Installation Contractors and To give a most comprehensive show, the R Retail Electrical Traders. West London. Main company invites other interested Manufac­ road position. Good showroom premises, workshops, stores turers having no London showrooms to & offices. Turnover about £20.000 p.a. Price £8,000, exhibit their products, free of charge. For including stock (£.2000). plant, machinery and office further details please communicate with— equipment. Principals only apply— John Swait Ltd., 34. “ Exhibition,” Box 2809. c/o The Electrical The Mall. Ealing 2866. 2842 Review.______,______O ATTERY Chargers Modernised. Your old Charger made WORK WANTED AND OFFERED " like new by specialists. Conversion from valve to metal /CLOCKWORK Controllers for Public Lighting, Clocks. rectification. Send for interesting leaflet “ Q.D.” on this Control and Time Switches, Electric Clocks and all service.- Runbaken Electrical Products, Manchester. 1. 45 types of instruments and appliances operated by clockwork T3HOTOGRAPHY. A photograph says more than a repaired and overhauled. Inquiries welcomed.— J. W. & thousand words. Realistic photographs for catalogues, R. E. Hughes (Clockwork Engineers), 58. Victoria Street. brochures and general reproduction purposes. All branches London, S.W .l. Phone. Victoria 0134. 35 of photographic work undertaken. Records made of present IECASTING in Mazak alloy to customers’ requirements. work, premises, etc. -Miles & Kaye Ltd.. Industrial Photo­ D Enquiries invited.— S.A. Components Co., Braids graphers, 100, Southampton Row, London, W.C.l. Tele­ Works. Colwyn Bay. N. Wales. Phone 2281 (4 lines). 2715 phone. HOLborn 6858. Established over 50 years. 2633 "C'LECI’RICAL Measuring Instruments skilfully repaired R ANSLATIONS (technical) to and from most European and recalibrated.— Electrical Instrument Repair Ser­ T languages. Prospectus free.— John Radcliffe, A.I.L.. vice. “ Stanimede.” Forlease Rd.. Maidenhead. 7566 Rainworth, Mansfield, Notts. 7670 "C'XPERIENCED firm, accustomed to doing electrical work for railways and to produce accurately made EDUCATIONAL NOTICES______and well-finished articles, would like opportunity of ten- , dering for Small or Medium-sized Electrical Components LATEST A.M.I.E.E. RESULTS ’ and Assemblies, preferably in fair quantities. Excellent equipment for producing machined parts by turning, mill­ N the recent Examinations held by the Institution of ing, etc., with facilities for welding, fitting, wiring, coil I Electrical Engineers 477 Candidates sat who had winding and woodworking. Strict attention to drawings taken B.I.E.T. courses. Of these 457 were .successful in and specifications, and first-class workmanship guaranteed. passing the examinations. We believe this record of 457 —Box 2695. c/o The Electrical Review. successes out of 477 entrants has never before been ACHINING Work, for Centre Lathes up to 6£ in. approached by any oral or correspondence tutorial M centres and medium-sized milling (/good grade work organisation, and indicates the very high efficiency of preferred).— The London Electric Firm. Croydon. Lp- the modern system of Technical training which we have lands 4871. 56 laid down. MALL Armatures, etc., winding or re-winding, in The B.I.E.T. tutorial organisation is waiting to assist S quantity. High-class work, prompt delivery.— you either with a short specialist course or complete Southern Ignition Co. Ltd.. 190, Thornton Road. Croy­ training for a recognised examination. don. 59 We have available a large full-time staff of instructors, while the efficiency of our extensive organisation is a BUSINESS OPPORTUNITIES byword among engineers. WE GUARANTEE—“ NO PASS— NO FEE ” ELECTRICAL CONDENSERS May we send a copy of “ ENGINEERING OPPOR­ TUNITIES ” ? Containing a great deal of useful advice rp H E rebuilding and development of the Tele- and detailed information on over 200 Home-Study Courses communication and Electrical Industries, at and examinations, this handbook is of very real value to home and abroad, presents an excellent invest­ the ambitious engineer. ment in the manufacture of Electrical Condensers. Our highly informative handbook will be sent FREE Companies, or Groups of Companies, may be and without obligation on request. interested in floating a subsidiary to manufcature BRITISH INSTITUTE OF ENGINEERING for their own requirements, and for develop­ TECHNOLOGY. ment in the home and export markets. Indivi­ Established 1927—over 200,000 students. duals or Finance Corporations may desire to take 12, Shakespeare House, 17, 18, & 19, Stratford Place. advantage of this outstanding opportunity. Oxford Street, London, W.l. Those who are interested are invited to communi­ ______33 cate with the advertiser, who is prepared to put over twenty years’ experience into such an ENGINEERING CAREERS AND undertaking. — Box 7647, c/o The Electrical QUALIFICATIONS Review.______"DO TH Government and industry have announced and fTONTRACTORS recently engaged on manufacture of emphasised that young men with technical know­ ^ M.A P and M.O.S. equipment now have capacity ledge and qualifications must receive every chance of available for Light Bench Assembly Work.— Box 2789. rising to the highest posts within their capacity in post­ c/o The Electrical Review. . . war engineering and allied industry. Write to-day for f'lONTRACT work wanted for Machining. Capstan. “ The Engineer’s Guide to Success ” — 200 courses— free— Turning and Grinding by fully equipped firm engaged which gives particulars of the first-class training supplied throughout war on M.A.P. and M.O.S. work. B'ox 2790, by the T.I.G.B. for the A.M.I.E.E.. A.M.Inst.C.E., c/o The Electrical Review. A.M.I.Mech.E., A.F.R.Ae.S., A.M.I.P.E., B.Sc.(Eng.), "\/rANUFACTURING company, N.E. London, has sur- C. & G., etc., examinations in which T.I.G.B. home-study IV! nius capacity and full facilities for carrying out students have gained 44 FIRST PLACES AND OVER EWtriral Radio or small Engineering Assembly work. 1.000 PASSES. The Guide covers careers in all branches. W rite in first instance to -B o x 2788. c/o The Electrical Electrical, Mechanical, Radio, Aeronautical, etc. Review. THE TECHNOLOGICAL INSTITUTE OF GREAT BRITAIN, PARTNERSHIPS 35. TEMPLE BAR HOUSE. T-irnrTO TiTAN small capital, widower, would join LONDON. E.C.4. E small business.— Box 7649, c/o The Electrical Review. 77 78 (Supplement) E l e c t r i c a l R e v i e w September 21, 1945

THE E-Z WIRE STRIPPER Can be supplied with any of the following Delco standard sizes o f Blades : ELECTRIC MOTOR No. 1 for I4’8to22's S W.G. REPAIR SERVICE „ 2 „ 12’s „ 19*8 „ h 3 „ 10’s „ 13’s „ We still cannot give you or equivalent overall the service we want to, diameters of Stranded but as always, we will do W ire s . our best. Help us to help you by advising your Sole Distributors : exact requirements before sending Motors for repair BUCK & HICKMAN LTD. 2, 4, 6 &8 WHITECHAPEL RD. ■ %l Delco-Remy &. Hydtt Ltd «OAD LONDON LONDON, E.l Advt. of J . B. Hyde & Co. Ltd.

3t iô o-ivt constant TUNGSTEN endeaaaivi ta “ ôJhaie E lectrodes in all f,avdy,” the itnptaa- diameters, plain and iną óuppíieó of ílee- shaped VticaC ClppCianceô CONTACTS X-RAY TARGETS RHYTEHllrc SPARK GAPS PLATES, DISCS ELECTRICAL CO. Ä S : and RINGS “ùtettyiAing. Łtecbdcal”

41-43 ROBERTSON STREET, GLASGOW, C.2 ELECTRO-ALLOYS LTD. II COLLEGE SQUARE NORTH, BELFAST 166 DUKES ROAD, LONDON, W.3. ACOrn 2264 September 2 !. 1945 E l e c t r i c a l R e v ie w (Supplement) 79 CLEAN, PERMANENT Window MARKING Lights ON B A K E LITE , METAL. GLASS. WOOD w ill COMPONENT PARTS. Etc. go up soon!

WRITE FOR "HARC0RAY" BROCHURE ILLUSTRATING COMPLETE RANGE OF REFLECTORS FOR SHOP, STORE AND SHOWCASE LIGHTING.

LARGE OR SMALL ARTICLES OF ANY SHAPE a r c o u r l s PRINTED BY ONE SIMPLE MACHINE Adopted in place of engraving by many STANHOPE] HOUSE, KEAN STREET, leading manufacturers

ALDWYCH, W.C.2. 75 BAKER STREET Telephone: TEM PLE BAR 9671 2 3 REJAFIX LTD. LONDON, W .l Tel.: Welbeck 1979 & 5141

DETERMINES PERFORMANCE

ARLEY.

^ 4 Q e

* ACCURACY * UNIFORMITY * RELIABILITY LITHOLITE INSULATORS & * SERVICE ★ COMPETITIVE PRICES ST. ALBANS MOULDINGS LTD EXPRESS DELIVERIES DAILY HI LONDON AREA WATFORD The VARLEY MAGNET COMPANY BLOOMFIELD ROAD •PHONE : WATFORD 4494 woo/JiSttSrii/in-, WOOLWICH, S.E.18 80 (Supplement) E l e c t r i c a l R e v ie w September 21, 1945

PAGE Empire Rubber C o ...... 12 Index to Advertisers Enfield Cables Ltd...... 35 PAGE Engineering 8c Lighting Equipment Co. Ltd...... 21 Agro Electrical Co. Ltd...... 67 English Numbering Machines Ltd...... 30 Air Ducts Ltd...... 63 Ensign Lamps Ltd...... 2 Allen, W. H., Sons 8c Co. Ltd...... 15 Everett Edgcumbe 8c Co. Ltd...... 40 Arrow Electric Switches Ltd...... 36 Evershed 8c Vignoles Ltd...... 37 Astor Boisselier & Lawrence Ltd...... 36 Ferranti Ltd...... 11 Automatic Coil Winder & Elecl. Equipment Co. Ltd. 30 Finlayson Bousfield & Co. Ltd...... 66 Avery, W. &T., Ltd...... 54 Fitter 8c Poulton Ltd...... 60 Bakelite Ltd...... 14 Flather 8c Co. Ltd...... 58 Belling 8c Lee Ltd...... 8 Fluxite Ltd...... 54 B.E.N. Patents Ltd...... 82 Geipel, William, Ltd...... 64 Birch, H. A., & Co. Ltd...... /. . . .Cover ii General Accessories Co. Ltd...... 58 British Insulated Callender’s Cables Ltd...... 7 8c 9 General Electric Co. Ltd...... 68 British Ropes Ltd...... 6 Glenfield 8c Kennedy Ltd Cover iv British Thomson-Houston Co. Ltd...... 5 G. M. Engineering (Acton) Ltd...... 47 Bromley-Langton Electric Wire & Insulator Co. Ltd. 80 Gseen, Horace, 8c Co. Ltd...... 62 Brush Electrical Engineering Co. Ltd...... 22 Harcourts Ltd...... 79 Bryterlite Electrical Co. (Belfast) Ltd...... 78 Harland Engineering Co. Ltd...... 16 Burn, George, Ltd...... 59 Heatrae Ltd...... 1 Castle Fuse & Engineering Co. Ltd...... 60 Henley’s, W. T., Telegraph Works Co. Ltd...... 55 Clarke, Chapman 8c Co. Ltd...... 65 Hick Hargreaves 8c Co. Ltd...... 56 Clarke, H., 8c Co. (Manchester) Ltd...... 46 Higgs Motors Ltd...... 3 Cole, E. K., Ltd...... 10 Holophane Ltd...... 27 Connollys (Blackley) Ltd...... 29 Hopkinsons Ltd...... 81 Constructors Ltd...... 36 Hutchinson’s ...... ; ...... 83 Crompton Parkinson Ltd...... Cover i, 19 8L53 Hyde, J. B., 8c Co. Ltd...... 78 Croydon Engineering Co. Ltd...... 62 Igranic Electric Co. Ltd...... 50 Cryselco Ltd...... 31 International Combustion Ltd...... 65 Davis 8c Timmins Ltd...... 84 Ismay, John, 8c Sons Ltd...... 64 De Renzi, Holmes & Co. Ltd...... 50 Jackson Automatic Electric Controls Ltd...... 81 Delco-Remy 8c Hyatt Ltd...... 78 Johnson 8c Phillips Ltd...... 17 Donovan Electrical Co. Ltd...... 62 Drake & Gorham Wholesale Ltd...... 8 Laurence, Scott 8c Electromotors Ltd...... 42 Duratube & Wire Ltd...... 64 Lister, R. A., & Co. Ltd...... 34 Litholite Insulators 8c St. Albans Mouldings Ltd 79 Edison Swan Cables Ltd...... 38 Liverpool Electric Cable Co. Ltd...... 23 Electric Lamp Manufacturers’ Association...... 45 Londex Ltd...... 84 Electro-Alloys Ltd...... 78 Elexcel Ltd...... 52 (Continued on page 82)

BROMLEY-LANGTON A ll B ritish JEST'D -ft VARNISHED COTTON INSULATING SLEEVING, INSULATED ELECTRICAL WIRES, LIGHTING FLEXIBLES - - - The BROMLEY-LANGTON ELECTRIC WIRE & INSULATOR Co. Ltd. TRADING ESTATE - SLOUGH - BUCKS.

ELECTRIC PULLEY BLOCK |_|

■ e g g Matterson Hoists are compact and efficient, require but little attention to keep them in U È f c iRs, good condition, and are made throughout by men taking a pride in their job. They will | not let you down. s MATTERSON LIMITED T y Shawclough. Tel. 4194 Rochdale Delivery 2 months subject to what helps the war effort S September 21, 1945 E l e c t r i c a l R e v ie w (Supplement) 81 HOPKINSONS’ « ¡ ¡ ¡ ~

of impurities from Tur­ bine Oils, Lubricating Oils, Fuel Oils, Insulating HOPKINSONS LIMITED • HUDDERSFIELD Oils etc., etc. London Office: 34 Norfolk St., Strand, W .C .2

ELECTRONIC INSULATION RESISTANCE TESTER

• 3 R A N G E S 0-3 — 500 m egohm s 0-3 — 5,000 m egohm s 0-3 — 50,000 m egohm s

• 500-VO LT TEST

• EXTERNAL CHECKING—Operator can calibrate at any tim e

• HIG H ACCURACY-within 2-5percent

JACKSON AUTOMATIC • MODERN SQUARE METER

ELECTRIC CONTROLS L™ • SMALL SPACE WINDSOR HOUSE • LOW WEIGHT

VICTORIA STREET Telephone : • ATTRACTIVE PRICE LONDON, S.W.I AB Bey 5960 • GOOD DELIVERY 82 {Supplement) E l e c t r i c a l R e v i e w September 21, 1945 Index to Advertisers (Continued from page 80) PAGE Lowmoor Best Yorkshire Iron Ltd...... 44 Macfarlane Engineering Co. Ltd...... 56 A PORTABLE VOLTMETER Macrome Ltd...... 58 Matterson Ltd...... 80 ROBUST AND RELIABLE McGeoch, William, 8c Co. Ltd...... 64 McKechnie Bros. Ltd...... 39 M.C.L. & Repetition Ltd...... 1 DIA. Metallic Seamless Tube Co. Ltd...... 44 Metropolitan-Vickers Electrical Co. Ltd...... 61 Metway Electrical Industries Ltd...... 30 Midland Dynamo Co. Ltd...... 67 Midland Electric Mfg. Co. Ltd...... 33 MOVING Mirrlees Watson Co. Ltd...... 60 National Fire Protection Co. Ltd...... 26 Newman Motors...... 32 Normand Electrical Co. Ltd...... 49 Oliver Pell Control Ltd...... 84 Partridge Wilson, E., & Co. Ltd...... 66 Permutit Co. Ltd...... 57 MOVEMENT Phosphor Bronze Co. Ltd...... 44 S T O C K Pinchin, Johnson & Co. Ltd...... 34 Pyrotenax Ltd...... 28 DELIVERY Rejafix Ltd...... 79 Reyrolle, A., & Co. Ltd...... 25 RESISTANCE 86,000 OHMS Rheostatic Co. Ltd...... 48 Ritherdon 8c Co. Ltd...... 46 2 RANGES 015 V. AND 0 250 V. Rix, G . A ...... 64 16 TRAILING LEAD & PRONG Ross Courtney & Co. Ltd...... 1 Rowlands Electrical Accessories Ltd...... 18 Runbaken Electrical Products...... 84 PRICE 50 - (subject) Salter, George, & Co. Ltd...... 60 Siemens Electric Lamps & Supplies Ltd...... 63 Simmonds Aerocessories Ltd...... 43 VICTORIA INSTRUMENT CO. LTD. Small Electric Motors Ltd...... 59 Midland Terrace, Victoria Rd., N.W .I0 Smith’s English Clocks Ltd...... 28 Sperryn 8c C o...... 67 PHONE ELGAR 7871/2/3 Standard Telephones & Cables Ltd...... 20 ALSO AT BOURNEMOUTH AND HOLMER GREEN Stephens Belting Co. Ltd...... 84 Stemaw Co. Ltd...... 82 Strand Electric & Engineering Co. Ltd...... 56 Suflex Ltd...... 51 Terry, Herbert, & Sons Ltd...... 4 Thorn Electrical Industries Ltd...... 24 Thorpe, F. W., Ltd Cover iii T.M .C.-Harwell (Sales) Ltd...... 67 Tucker, J. H., & Co. Ltd...... 13 Universal Boilers & Engineering Co. Ltd...... 83 Vactric Ltd...... 54 Varley Magnet Co ...... 79 Veritys Ltd...... 41 Victoria Instrument Co. Ltd...... 82 Ward 8c Goldstone Ltd...... 55 Weir, G. 8c J., Ltd...... 30 Westminster Engineering Co. Ltd...... 1 Westool Ltd...... 82 STERNAW Wilcox, Edward, & Co. Ltd...... 36 COMPANY Wireohms Ltd...... 62 Wright, Bindley 8c Gell Ltd...... 83 4 LICHFIELD TERRACE, RICHMOND Yorkshire Electric Transformer Co. Ltd...... 48 S U R R E Y — Richmond 0222 & 4680

ifclv No 2 LET HELP SPRAY PAINT WESTOOL COMBINATION WITH YOUR POST-WAR PROBLEMS ON ALL Electro-Mechanical Apparatus Comprises essential equip­ ment for continuous spray Solenoids and Electro-Magnets painting, including Spray Gun, Pressure Paint Con­ FOR TECHNICAL ADVICE. W RITE:— tainer, Hose and connections. W rlte'for Catalogue C.B.36. WESTOOL Ltd. Telephone : B.E.N. PATENTS LTD. Westool Works PUTNEY HIGH WYCOMBE, BUCKS Putney, S.W.15 4281/2/3 September 21, 1945 E l e c t r i c a l R e v ie w {Supplement) 83 Jut?!" tilt kiutloclit Cittd (xdk UJ-Be G tifr luJp tjcnt

tvt/A. fac/Am /vucA.- tS id icu if-/ie£ ea te WRINGER UNIVERSAL EL „ SoiieA A & ¿nqtfte& uA Q Colic/. (J u i/e c /c e ¿Vcri-Asd. • /3 e *w x £ & (/ Telephones • 3 / 2 / - J / 2 2 • 3 2 0 3

Just Published Worked Examples Don’t give yourselves unnecessary headaches over that job which is in a worry to you, but which is just Electro­ bread and butter to us! W e technology have solved a few thousand W. T. PRATT B.Sc., A.C.G.I., D .I.C., A.M .I.E.E. presswork problems in our time ! This collection of over 200 worked examples in Electrotechnology will be ot considerable assistance to students who We work in all metals intend to sit for the Preliminary and Intermediate Grade Examinations of the and to most specifications. City and Guilds in Electrical Engineering P ra ctice. Illustrated. 12/6. HUTCHINSON’S Scientific and Technical Publications .WRIGHT BINDLEY E GELL LTD 47 Princes Gate, London, S.W.7 PERCY RD., BIRMINGHAM II 84 (Su p p lem en t) E l e c t r i c a l R e v ie w S e p te m b e r 21, 1945

Small Turned Par's and »AVIS & TIMMINS LJ Inserts made to order. Head Office: BILLET ROAD • WALTHAMSTOW - LONDON • E.I7 Enquiries invited. Telephone: Larks wood 2244 and 4441

V ” DRIVES

/ Prompt delivery of all sizes o f“ V ” TRANSFORMERS Belts and Pulleys AND CHOKES STEPHENS \fi>r R f/iah i/itq BELTING , C O . L T D . " V ” DEPT. S N O W H IL L BIRMINGHAM,4 LONDEX for RELAYS TW O S T E P High and^Low RELAY LF FS p S s : (Heavy Silver Contacts) Voltage Testing ; 1/30, First Impulse *' ON ” Second Im­ 100/850 A.C. and D.C. Send fo r pulse “ OFF.” For A.C. and D.C. interesting leaflet (Q 4) on Electrical Also Aerial Change-over Relays and Radio Testing, from all Dealers Ask for leaflet 88A/ER o r direct LONDEX- LTD RUNBAKEN MANCHESTER ! MANUFACTURERS OF RELAYS Av»cÄksY 207 &NERIEY ROAD- L0ND0NS'E-20 SrOENHafTMSB/

Printed in (Treat Britain a t T u E CTia p e l R iv e r PRESS, A ndover. H a n ts, a n d published by ELECTRICAL REVIEW L im i t e d , at Dorset House, Stamford Street, London, S.B.I.' September 21, 1945 E l e c t r i c a l R e v ie w iii REFLECTORS FOR 80 WATT TUBULAR THORLDX FLUORESCENT LAMPS

WITH SLOTS FOR UPWARD ILLUMINATION 1748 I Lamp with Box £3 0 0 + 25% 1749 I Lamp without Box 2 7 6 + 25%

WITHOUT UPWARD ILLUMINATION 1764 I Lamp with Box £3 0 0 + 25% 1762 I Lamp without Box 2 7 6 + 2 5 % Prices include Hooks and Patent easy wiring box on top of trough. Fixings arranged for any make of control gear. F W TH0 RPE LTDXEt® S BIRMINGHAM28 Telegram s THORLUX, B’HAM 28 Telephone: SPRINGFIELD 33/8-9 GLE N FI E LD SLUICE VALVES For every purpose Although the variety of uses for Sluice Valves is almost unlimited, all but the most exceptional require­ ments can be exactly met from our standard range. Glenfield standard types comprise valves from l£ inches to 48 inches diameter, which can be supplied with any desired type or combina­ tion of connections. End con­ nections can be flanged, socketed, provided with flange and bellmouth, made suitable for Asbestos-Cement pipes or for any other type of joint or special requirement. Flanged valves can be provided with spigot and socket pieces, double-flanged distance pieces, slip joints, etc. Socketed valves can be made suit­ able for Cast Iron, Mild Steel or Concrete Pipes. Glenfield Valves can be supplied with a wide variety of control gear: Key, Handwheel, Headstock (hand or mechanically operated), Hydraulic, Electric or the Glenfield Lockheed System, which is particularly suitable for the control of valves in inaccessible posi­ tions, or for the unification of control of banks or series of valves. Our standard ranges include valves to withstand exceptionally high pressures, also valves in bronze, steel or corrosion- resisting alloys, and we are at all times ready to quote for the supply of special valves to meet the most exacting require­ ments or specifications. Our illustrations show some examples of typical Glenfield valves.

IGLENFIELP & KENNEDY. LIMITED. KILMARNOCK