Luc XVüiVICiW , .IUJNW lü i'H ., 1 9 4 0 DISTRIBUTION SYSTEM AT COAL SITE FI FOUNDE 18 7
Vol. CXXXVI. No. 3525 JUNE 15, 1945 9d. WEEKLY
The Big Name
i n Commercial Lighting
[ ¡ ¿ t e a ^ LAMPS
The British Thomson-Houston Co. Ltd. Crown House, Aldwych, London, W.C.2 ii E l e c t r ic a l R e v ie w June 15, 1945
f I f N 1924 Bullers made the first big bushing of 6 6 kV capacity. To-day we are able to show this massive 242 kV OIL FILLED BUSHING. The porcelain parts were made in Bullers’ works for the BritishThomson- Houston Co. Ltd. It measures 15 ft. ij inches overall and is one of the largest bushings of this kind yet produced. Only the skill and knowledge acquired by long experience could produce insulators of such dimensions free from flaws. How much larger will be called for in years to come, only the future can say. But one thing is certain, whatever the size, Bullers will be ready with their unrivalled resources and experience to cope with the problem. Bullers ¡NSULATOKS AND /RONWOBK
BULLERS, LTD. t h e h a l l , o a t l a n d s drive WEYBRIDGE, SURREY Telephone : Walton-cn-Thames 2451 Manchester Office : 196 Deansgate, Manchester June 15, 1945 E l e c t r ic a l R e v ie w 1
IN SUPPORT OF THE MINISTRY OF FOOD HERE IS ANOTHER RECIPE FOR YOUR DEMONSTRATIONS :
Coated Cake
Ingredients: COOKING CABINET 5 lb. flour (self-raising). 5 lb. sugar. level teaspoonful of salt. 2 ozs. fat. z: pint of milk. I re constitu ted egg. M e th o d : Mix together the dry ingredients. Melt the fat in the milk—add eggs. Mix into the dry ingredients and put the mixture in a greased tin.
Ingredients: C O A T IN G . 1 oz. sugar. 5 teaspoonful spice. 2 tablespoonsful breadcrumbs. 1 oz. margarine. 2 tablespoonsful flour (self-raising).
M e t h o d : Cream the margarine and sugar, add the other ingredients, mix well. Sprinkle over the entire top of the cake and bake at 425 \ If in a 7" diam. cake tin, allow 45 minutes.
Cat No. I92J. ELECTRIC STOVE Co. Ltd. 43 SLOANE STREET. LONDON. S.W .I 2 E l e c t r ic a l R e v ie w June 15, 1945 Frames and Cases for Electrical Equipment
FEEDER PILLARS,
CUBICLE AND
TELEPHONE BOXES,
BUSBAR CHAMBERS,
CONNECTION BOXES,
INSTRUMENT PANELS AIR DUCTS LTD. GREAT WEST ROAD, BRENTFORD
Phone : Ealing 6655. Telegraphic Address : “ Airdux, Brentford ”
f (X D A vrouqh.il/ fo u n d Job
f o r O
All-Steel Weatherproof Cubicle with re inforced under-carriage combines excep tional strength with lightness. 150 K.w. Outdoor Weatherproof Transportable—easily installed. Glass Bulb Rectifier.
Sloping roof prevents accumulation of w ater.
RECTI FI E sj^ M a n u f a c t u r e d b y th e P io n e e rs in Electrical Conversion.
BRUCE PEEBLES & CO. LTD.. ENGINEERS. EDINBURGH.
3620 June 15, 1945 E l e c t r ic a l R e v ie w 3
& ^vvw w w w w uuuv NIPHAN 3s WEATHERPROOF SWITCHES 1 N 910. 5-amp 250-volt C.l. Switch complete with 3-pole earthed-type plug. N 660 A . N 900. ‘5-amp 250-volt C.l. Switch screwed conduit. SIMMONDS & STOKES LTD. V ictoria House, Southam pton Row, London, W.C.I. Holborn 8637& 2163 4 E l e c t r ic a l R e v ie w June 15, 1945 All D IN G H u t ic m s OWER Electric POWER is a mighty sinew of the nation's effort. It must be GUARDED against leakage. Tullis Russell Rothmill Cable Insulating Papers are called upon by leading cable manu facturers to perform this task, and it is carried out admirably by these renowned, uniformly high-quality insulating papers. Rothmill Papers are guaran teed free from metals and grit. Write for details of the com plete range. R o t h i h i l l CABLE INSULATING PAPER TuU iiQ utseU rC ff.iid. Auchmuty & Rothes Paper Mills» Markinch, S cotland LONDON MANCHESTER BIRMINGHAM I Tudor St., 3 7 2 C o m E x ch an g e 1 1 0 C o lm ara R a f *5 fS 4 Rides,, corporation Si J u n e 15, 1945 E lectrical Review 5 FRACTIONAL HORSEPOWER (™ ) M OTORS The most popular in the country CAPACITOR MOTORS £ H.P. to 1 H.P. Up to 250 volts. B A LL OR SLEEVE BEARINGS Solid Base Mounting Molors are available for :— Solid Base Mounting Cradle Mounting Resilient Mounting Resilient Mounting fitted with Automatic Belt-tension Adjuster Spigot Mounting The most compact machines Spigot Mounting obtainable compatible with Vertical. Horizontal. . reliability, quiet running, and [or Inclined Positions/ proved performance. BTH RUGBY T H E BRITISH THOMSON-HOUSTON COMPANY LIMITED. RUGBY, ENGLAND A3256 ALL RANKS-ALL SERVICES Thank them NOW, by a gift or legacy to HAIG’S FUND-RICHMOND-SURREY E lectrical Review June 15, 1945 r A f r r n i i m THE ILLUSTRATION SHOWS THE 300-AMPERE TWIN • GENERATOR, IN REGULAR DEMAND • OTHER TYPES AND SI2ES ARE AVAILABLE • • SUBJECT TO M.T.C.PURCHASE-CERTIFICATE CONDITIONS SPECIALISTS IN A.C. AND D.C. WELDING INSTALLATIONS ------REYROLLE------HEBBURN-ON-TVNE ENGLAND June 15, 1945 E l e c t r ic a l R e v iew 7 1 - VS-xv^ tr% > « ^ riSws»**- > v.s ■ x a EQUIPM ENT fbf ALiriNDUSTRIES * x ■ X • • V'r.-s-* • ' ~-v».<'sr5=^T J' y.< -S. VX. —--V x.X >vVV-j s: VC>0r€ve Nutrunners contain those a n characteristics so essential to war time production needs. They are capable of really hard work with freedom from breakdowns and are gw§i fitted with the 1 % X x :• V ’- r - s s s s r — Sfclj bc;^?< aitPATFEPPMEWMATfiC _ jw** T © & t (i j CiS.-ILT®. Fraserburgh' Aberdeenshire 'A IR COMPRESSORS • PNEUMATIC TOOLS • ELECTRIC TOOLS • DIESEL ENCINES • VACUUM PUMPS CONTRACTORS* EQUIPMENT - ROCK DRILLS • DIAMOND DRILLS • OIL WELL TOOLS 'V*V. Robert Sharp & Partntrs Electrical Review June 15, 1945 1 Buxton Certified The Best Pos sible Flameproof Electrical Access ories for use in inflammable or explosive atmo spheres. WALSALL CONDUITS LTD WEST BROMWICH June 15, 1945 E l e c t r ic a l R e v ie w 9 BLUE PRINT FOR SEEING. Make sure that you have the correct lighting equipment; enlist the help of the Crompton Lighting Service; thus will you make sure of maximum visual efficiency. ------CRomPTon LIGHTING EQUIPMENT ■ / I FOR THE LATEST f I N L IG H T IN G ■ t - — , 3 i" ...... \ CROMPTON PARKINSON LTD. ELECTRA HOUSE, LONDON, W .C .2. Telephone : Temple Bar 5911 Telegrams Crompark, Estrand, London. 10 E l e c t r ic a l R ev ie w June 15, 1945 can provide all you need in SWITCH and FUSE GEAR for reliable Revo S.7050 T.P. Switch and Fuses ¡ retaliations with Neutral link. 500V/15-60Amps S E N D us pa rticulars o f y o u r requirements, there is sure to be a standard article in the com prehensive range of REVO Switch & Fuse G ear to m eet th e purpose. Every piece of REVO Switch & Fuse G ear is designed and b u ilt to give service—long and trouble- fre e s e rv ic e fo r w hich it has earned a reputation second to none. Revo S.3420. Teak Cased Fuseboard. Avail able for 15 Amp!500 V. 30 Amp/250 V. 30 Amp/500V. 40 Amp!250 V. for 2-10 ways. DELIVERY without DELAY SWITCH and FUSE GEAR The RIGHT Gear for the job REVO ELECTRIC CO. LTD.. TIPTON,STAFFS. June 15, 1945 E l e c t r ic a l R e m e w 11 12 E l e c t r ic a l R e v ie w June 15, 1945 WHEN CHANGING YOOR FACTORY LAYOUT plan to use Rawlplug Fixing Devices When a changeover in machine positions is made in a Works all sorts of problems crop up. Machines have to be fixed in awkward positions, switchgear has to be tucked away in a small cubby-hole, wiring is less conveniently placed for fixing under the new layout. Rawlplug Fixing Devices can solve all these fixing prob lems for you, simply and economically. There is a Rawlplug for every size of screw. They are suitable for any type of fixing work from electric wiring to fight machinery, and of course Rawl- plugs are quickly and securely fixed. Rawlbolts are the modem way of fixing heavy machinery —fixing it without fuss, without the mess and trouble of grouting. Rawlbolts are the speediest and best way of fixing heavy machinery yet d ev ised . Rawlplug s, Rawldrillt, Rawlbolts, Percussion Tools, Rawldrives, Rawlplastic, White Bronze Plugs, Bolt Anchors, Screw Anchors, Cement- i s Backets, Boring Tools, Tile Drills, Electric Hammers, Mechanical Hammers, Soldering Irons, Toggle Bolts and many products of In AWLPLUG dustrial and Domestic utility. Write for technical literature to : THE RAWLPLUG CO., LTD. LONDON, S.W.7 FIXING DEVICES B 306 June 15, 1945 E l e c t r ic a l R ev ie w 13 THE DEFEAT OF THE MAGNETIC MINE AssembIing buoyant centres and electrode tails for buoyant Cables in the H E N LE Y factories. Hitler's first "secret” weapon, the Magnetic Mine, was conquered by the gallant minesweepers of the Royal Navy using Buoyant Cables. A completely successful design was produced by Henley’s in record time, and we have supplied many hundreds of complete sets, involving over 1,000,000 yards of cable. This is yet another major victory of the war in which a leading part was played by Henley's. HENLEY C a b l e s W. T. HENLEY'S TELEGRAPH WORKS CO. LTD. MILTON COURT • WESTCOTT • DORKING • SURREY ""out: dorking s z h fio uncs) ______TCLCGRAMS: HCNIETEL, DORKING r r SATTNE 14 RA HMTN T, RMI I . .IB M A H G IN M IR B ST., HAMPTON GREAT - 0 N I N N q g ( ~ POLISHING COMPOSITION SS, ec Lt s ov your ariul plsig rbe . problem polishing r la rticu pa r u o y solve us burrs, Let etc. removes S.S.," “ position om C Polishing Greaseless ” Satene “ her l-no cmpstos nld “L te” “Pels, Peerless,” “ stre,” Lu metals. “ ost m include to positions finish com n satin ow a gives ell-kn w and r e marks th O ding grin and l o to Canning polishing equipm ent covers polishing m otors, wheels, wheels, otors, m polishing covers ent equipm polishing Canning bobs, mops, brushes and polishing com positions fo r every every r fo positions com polishing and brushes purpose. mops, bobs, ELECTRIC POLISHING E EFCNAND UTETATR PLANT DUST-EXTRACTOR SELF-CONTAINED cal a ic r t c e l OO No.MOTOR 1612 R ew ie v e ITD TH IT W FITTED — — — June 5 1945 15, June 15, 1945 E l e c t r ic a l R e v ie w 15 PLANT MOTORISATION USING'ENGLISH ELECTRIC MOTORS AND OVERHEAD BUS-BAR SYSTEM View in a factory containing 105 belt driven machine tools. 105 m ach in e to o ls changed over to in dividual m otor drive, including all [electrical connectionsand motor isation of the machines. This "changeover is fully described in our publication entitled ‘ PLANT MOTORISATION ’ WRITE FOR YOUR COPY to Fusegear Dept. STAFFORD. THE ENGLISH ELECTRIC COMPANY LIMITED London Office: QUEEN’S HOUSE, KINGSWAY, LONDON, W.C.2 WORKS: STAFFORD - BRADFORD - RUGBY - PRESTON 16 E l e c t r ic a l R e v ie w June 15, 1945 BRANCHES : London, Birmingham, Cardiff, Manchester, Bath, Leeds, Newcastle, Glasgow, Belfast, Dublin. detsmn of tnad Telephones Standard f o Advertisement No country No T 1 1 T ject ro p No June POWER CABLES POWER ypes under head s t s. m ste sy d a e rh e v o d n a d n u o r rg e d n u f o s e p ty SSI power s peilt and our or s i n tio isa n a rg o r u o d n a , eciality sp r u o is r e w o p f o N IO S IS M S N A R T T 5 1945 15, o difc lt ifficu d too is a d e q u a te ly e q u ip p e d f o r th e s u p p ly a n d in s ta lla tio n o f all all f o n tio lla ta s in d n a ly p p u s e th r o f d e p ip u q e ly te a u q e d a is o vast a v too Standard E cal a ic r t c e l & R als i td Not Wolih E.I6 E oolwich, W orth N ited, Lim Cables ew ie v e 17 18 E l e c t r ic a l R e v ie w June 15, 1945 [fppüîW? The installation of “ BRITMAC ” Ironclad Indicating Switch Units is an effective method of ensuring safety and economy, the latter being of vital importance in the present " Battle for Fuel.” The Switch Unit illustrated, Catalogue Number P439I, is the I-section pattern. The Indicating Switch Units are available in one and two sections, 5-amp [and [15-amp capacity, and can be fitted .with either Single or Double Pole Switches. The outstanding quality of “ BRITMAC ” Iron clad Accessories is fully maintained in this range of Indicating Switch Units. May we send you full details of the “ BRITMAC ” Irondad Range ? e l e c t r i c a l ACCESSORIES FOR ALL WAR-TIME INSTALLATIONS Telephone : T elegram s : ACOCKS GREEN HECTOMAR 164-2 5 L IN E S BIRMINGHAM Electrical Review, June 15, 19^ As materials are released from war needs TITANINE, in a range of delightful colours, will come forth to brighten the new era of peace. Special finishes will be available TIT A N I N for every industrial purpose. ¿AMOUS FOR AIRCRAFT FINISHES AND INDUSTRIAL To ensure early supplies, enquiries should be made now. LACQUERS. ENAMELS, PAINTS AND VARNISHES TITANINE LIMITED, COLINDALE, LONDON, N.W.9 TELEPHONE : COLINDALE 8123 2 0 E l e c t r ic a l R e v ie w June 15, 1945 M l t i I ELECTRIC c- BURCO LTD.! Rose G r o v e ' u * * WASH BOILERS B u rn le y M EKELITE'Industrlal Lighting Units are available With various lengths of arms and pillar. Bases f o r wall, bench or machine mounting ; for conduit or Side entry with clamp for supply cable. Also heavy bases for portable use. Small reflectors for 12-volt lamps can be supplied. Catalogue sent free on request. June 15, 1945 E l e c t r ic a l R e v ie w 21 IN STANDARD SIZES UP TO TOTALLY ENCLOSED 3 0 0 H.R WEATHERPROOF FLAMEPROOF STRAIGHT-ON STAR-DELTA STATOR-ROTOR MZC.S. ^ CONTACTOR STARTERS ARE AVAILABLE FOR WALL OR PEDESTAL MOUNTING. SINGLE UNITS CAN BE BUILT UP IN BOARD FORM AS ILLUSTRATEDI Write for Descriptive Literature M. & C. SWITCHGEAR LTD. \ ^ / KELVINSIDE WORKS, KIRKINTILLOCH, GLASGOW SALES & SERVICE : OLIVE GROVE RD. SHEFFIELD, 2. LONDON OFFICE : 36 VICTORIA ST., S.W.I 15, 1945 2 2 E l e c t r ic a l R e v ie w June F O R POST-WAR RADIO USE ONCORDIA D U BOIS ‘Plus Quality CONTACTS RESIN CORED SOLDER. Manufactured with Flux continuity assured.no bare patches are existent Speedily makes Absolutely a sound Me chanical and corrosive Electrical joint AID. APPROVED DTD 599 IN Being used by the Principal British TUNGSTEN RADIO AND ELECTRICAL SILVER & SILVER ALLOYS EQUIPMENT manufacturers en IRIDIO - PLATINUM gaged on Air Ministry, Admiralty, . ON AIR MINISTRY LIST and M in is try ¿1 S u p p lie d on:- Supply contracts. I-lb., 4-lb., 7-lb. and IO-lb. Reels Made by the London Platinum Screw Mfg. Co. Ltd. You are invited to send for details and samples of this special Solder with flux uniformly distributed ELCORDIA LIMITED throughout the whole length. T H E D U B O IS CO. L IM IT E D 2 Caxton St., Westminster, London, S.W.I 15 BRITANNIA 8TREET, KING’S CROSS. W.C.1 Telephone : Terminus 6624/5 Telephone : ABBEY 4266 PRESSURE Die Castings BASIC METALS - ALUMINIUM, ZINC,TIN AND LEAD Small Rivets a speciality Write fo r Treatise on Die Castings IN ALL SIZES FOR ALL PURPOSES SPARKLETS LIMITED 86 - 88 CONSTITUTION HILL BIRMINGHAM 19 Dept. 36, LONDON, N.18 Phon. : COLMORE 4010 F O U N D E D 1896 Lon do n A g e n t: E. j. C o o kso n , 10 D e von sh ire 146 Bishopsgate. E.C.2 Chamber». June 15, 1945 E l e c t r ic a l R e v ie w 23 FORCE PLUTO Îh%el< S nder Coiling 40 miles of “ Hais” Cable Diameter of Coil 65' 6".] Height of Completed Coil 10' 6". Weight 2,000 tons “THE HAIS CABLE” The development and first experimental length of the cable known under the code name “ Hais” (made up of the initials of Mr. Hartley, Chief Engineer of the Anglo-lranian Oil Co. Ltd., and Siemens) for the undersea transport of petrol and oil for the Armies of Liberation was carried out at the Company’s Woolwich Works. We subsequently manufactured over 200 miles of this type of cable. Our long experience in Submarine Cable w ork enabled us to play such a prominent part in this outstanding engineering achievement SIEMENS BROTHERS & CO., LIMITED LO^DLON^S.E.I8 24 Electrical Review June 15, 1945 TYPICAL For over 35 years Dr. Billy Bulb, leading OPERATIONS SUPPLYING D.C. FOR ALL Specialist in Rectification, has been operating, FORMS OF ELECTRIC very unobtrusively but with great efficiency, TRACTION. behind the closed doors of his well-known D.C. INDUSTRIAL DRIVES. cubicle. CRANES. MAGNETIC PLANT. During the stress of war he has steadily con D.C. LIGHT & POWER DIS tinued operating, despite the most cataclysmic TRIBUTION SYSTEMS. disturbances, and we now welcome his CINEMA ARCS. decision to come out of his cubicle and tell BATTERY CHARGING for ELECTRIC VEHICLES, us of the excellent work he has been doing, EMERGENCY LIGHT and something of his post-war plans. IN G , ETC. .. . for every application where D.C. is required from anA.C. łjewiłtic Ifecłi S u p p ly . HEWITTIC ELECTRIC CO. LTD., WALTON-ON-THAMES, SURREY Telephone : W alton-on-Thames 760 (8 lines) Telegrams : » Hewittic, Walton-on-Thames ” June 15, 1945 E l e c t r ic a l R e v ie w 25 26 Electrical Review June 15, FRY’S METAL FOUNDRIES LTD LONDON. AND AT MANCHESTER, BRISTOL, GLASGOW AND DUBLIN June 15, 1945 E l e c t r ic a l R e v ie w 27 ’U l S E ? — an outdoor type, supplied in current ratings up to 3000 amps and breaking capacities of 750 MVA. Easy to instal. Design eliminates lining- up o f phases on site. Tank raising and lowering mechanism permits individual operation of each tank, facilitating inspec tion and maintenance. FERGUSON, PAILIN LIMITED MANCHESTER II. Phone : D ro y ls d e n 1301 (8 lin e s) ENGLAND LO NDO N : Temple Bar 8711/2 BIRMINGHAM : Sutton Coldfield 2744 GLASGOW : Central 5080 2 8 E l e c t r ic a l R e v ie w June 15, 1945 COPPER The most up-to-date pre cision machinery and highest quality materials are employed in the manufacture of Anacos Copper Strip, with consequent accuracy and reliability. Anacos Copper Strip being used in the manu facture o f a circular Lifting Magnet. TELEPHONE FREDERICK SMITH & COMPANY TELEGRAMS BLACKFRIARS 1 (INCORPORATED IN THE LONDON ELECTRIC WIRE COMPANY A SMITHS. LIMITED) "ANACONDA 8701 (9 lines) ANACONDA WORKS, SALFORD, 3, LANCS MANCHESTER June 15, 1945 E lectrical Review -■? C _ U ASYM BOL OF & ■ ■ RELIABLE METERING POLYPHASE kWh METER W ITH kVA DEMAND INDICATOR SIMPLICITY—always a feature of C. &. H. design—is strongly evident in this combination meter. One set of terminals and connections ensures correct installation. The testing and adjusting of the meters is simplicity itself. Manufacturers : CHAMBERLAIN & HOOKHAM LTD., BIRMINGHAM 15, 1945 3 0 E l e c t r ic a l R e v ie w June INSULATE WITH SOLID RUBBER ALL In applying the rubber tape under tension (after first removing the red ¡ 5 1 Zu Ü protective interleaving cloth) each layer fuses to the other to form one piece of SOLID yet flexible rubber. l/ w HAMPTON WORKS A single layer withstands more than 5,000 volts. From all Electrical Wholesalers & Factors Manufactured by ROTUNDA LIMITED TW YNING ROAD, STIRCHLEY, BIRMINGHAM Tel.: King’s Norton 2281 (2 lines). Grams: Radlagills, B’ham Denton, Manchester, England M ade in Four Types: ALL-HARD • FLEXIBLE . DOUBLE EDGE • HIGH SPEED STEEL Obtainable f r o m all Tool Dealers. JAMES NEILL A CO. (Sheffield) LTD., SHEFFIELD, 11. EH156 23 PRINCESS MAY ROAD, LONDON, N.I6 June 15, 1945 E l e c t r ic a l R e v ie w 31 at a high standard of quality... The term “ standardisation ” may stand for mere uniformity. At the M.E.M. Factory, however, it means that all production is brought up to a high level of quality, design and finish. The architect who specifies M .E.M . switch and fusegear and the electrician who selects M.E.M. know that a reliable installation is certain and at a reasonable cost. For although M.E.M. gear is good it is not expensive. Good design and modern factory practice have cut out all waste of both materials and man-hours. The M.E.M. Factory is self-contained and self-sufficient. It pro duces good electrical gear from start to finish—good all through. SWITCHCEAR • MOTOR STARTERS FUSEGEAR • ELECTRIC FIRES M.E.M. “ Memroy” Switch/use. MIDLAND ELECTRIC MANUFACTURING CO. LTD, TYSELEY, BIRMINGHAM, V London Showrooms & Stores : 21-22 Rathbone Place, W .l : Manchester Showrooms & Stores; 48-50 Chapel St., Salford, 3 32 Electrical Review J une ' 5, 1945 Tut, tut! What are we saying? What we meant to say was, Please pardon this intrusion, but we have been making plastics since 1877, and thus have nearly 70 years of research and experience behind us. In fact, we know a very great deal about plastics, particularly in the form of P.V .C. extrusion compounds made to G .D .E.S.18 and all other specifications, and can supply the answer to many an unusual problem.* Why not meet one of our technical experts at our Exhibition Rooms, 6 Hanover Square, London, W. 1., for a discussion on the ways that plastics may be able to help you in your business now and in the future? Write, or ’phone Larkswood 4491, for an appointment. * This material can only be obtained on allocation from'Plastics Control. BX PLASTICS LIMITED, LARKSWOOD WORKS. LONDON, E.4 L H IB X 243 June 15, 1945 E lectrical Review 33 3 4 E l e c t r ic a l R e v ie w June 15, 1945 IN PEACE AS IN WAR Because of their reputation for unfailing reliability BULL' Motors were selected for many of the most vital war jobs. They will play a great part in supplying the needs of post-war Industry because . . . YOU CAN ALWAYS DEPEND ON ^ M O T O R S E. R. & F. TURNER LTD., IPSWIC Also. London Manchester Birmingham Sheffield Newcastle and Clas E lectr ica l R eview Managing Editor : June 15, 1945 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor : C o n te n ts’ C.O. Brettelle, M.I.E.E. J. H. Cosens Page Contents continued:— Page Editorial.—Rural Electrification 851 Release of Key W orkers 870 Unique Works Distribution 853 Commerce and Industry 871 Power Station Efficiency. By G. Views on the News 874 O ld ro y d , G raduate I.E.E. . 857 Callender’s Activities . 875 Municipal Electricity . 859 Export Licensing Relaxed 876 D ew Point o f Flue Gases. By Electricity Supply 877 W . R. W o o tto n 861 Recent Introductions . 879 Notes from South Africa 864 Financial Section 880 C orrespondence 865 Advertising in Export Markets. The E.I.B.A. 866 By “ Sala ” . . . . 884 A.S.E.E. Report . 866 New Patents . . . . 885 Forthcoming Events 866 Contract Information . 886 Personal and Social 867 A.C. Vectors. By G. W. Stubbings, Classified Advertisements 71 B.Sc., A.M.I.E.E. 869 Index to Advertisers 81 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.” This illustration shows one of many types of Connectors manufac tured by us for use with PORTABLE APPLIANCES. W e specialise in com plete flexible assem blies. Let us quote for your requirements. WARD&GOLDSTONE Lt d . Pe n d l e t o n , M a n c h e s t e r . 6 ESTABLISHED OVER HALF A CENTURY 3 6 E l e c t r ic a l R e v ie w June 15, 1945 EARTH LEAKAGE INDICATORS A Leakage Indicator is available for every system, including:— 0 Type AS. for Trolley Bus systems w ith insulated negatives. £ Scaled direct in ohms. £ Type HS. for three-phase with earthed neutral. 0 A leakage of £th ampere clearly shewn and yet cannot be damaged by the heaviest fault current. TYPE AS. £ Current Transformer slips on Earth Conductor. WRITE FOR CATALOGUE SHEET 340 TYPE HS. EVERETT EDGCUNBE COLINDALE WORKS LONDON, N.W.9 ¿h , rbm, C Telephone: COLIN DALE 6045 Manufacturers of all kinds of indicating and recording electrical instruments. E lectr ica l R eview ; THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872 '^S! Vol. CXXXVI. No. 3525. JUNE 15, 1945 9d. WEEKLY Rural Electrification The Need For Definition JE have recently heard the electrical Many people, including electrical men, are W press taken to task for being too using the term too loosely, each with a willing to accept the present situation particular set of conditions in mind—no relating to rural electrification, it being doubt often those associated with his own implied that the understanding and courage district. necessary for voicing the need for financial The time has long since passed when assistance to farming and other rural reference to electrification in other fields, enterprises are seriously lacking, and that e.g., city, urban, industrial, residential, the present rate of development is grossly and built-up areas, automatically implied inadequate. a specific set of conditions. Would any We flatly refute these suggestions so far responsible supply engineer now think of as the Electrical Review is concerned, and the concentrated-load districts of Sheffield we do not think there is any need to remind in the same terms as he would think of our readers of our constant efforts to the comparatively light-load districts of record the facts, to elucidate the problems Bedford ? Of course not. Similar clari and to give the various aspects in their fication is absolutely necessary in con correct proportions. nection with rural electrification if meaning is to be given to such aspects as subsidisa Consumers’ Obligations tion, long-term loans, etc. In a leader in the Electrical Review of Each rural district has its own set of June 2nd, 1944, we dealt fully with the conditions, and the differences between very question of financial assistance. We them are so wide in many cases as to place gave warning that an unhealthy condition such aspects as revenue production and would be brought about if subsidisation did financial assistance on entirely different not succeed in stimulating the industry con planes. cerned. We contended at the same time that if rural enterprise is to benefit from Load Building electrification this will ultimately prove a There are the sparsely populated areas remunerative investment to the rural with only a few sheep farms which offer consumer who, in consequence, should be little more than cottage lighting ; similar prepared to accept financial assistance in areas with dairy farms which use electricity some form of loan or credit from the extensively for milking, washing, sterilising, Government, the electrical industry or fodder preparation, etc. ; both sheep-farm some suitable organisation outside. and dairy-farm districts which are also The point we wish specially to emphasise “ good class ” (or otherwise) residential here, however, in order that the above districts; and others which are associated considerations may be viewed in their with rural industry, often heavy industry true perspective, is the need for defining like collieries and steel works—to quote what is meant by rural electrification. only a few of the very many. 8 5 2 E l e c t r ic a l R e v ie w June 15, 1945 A ll these circumstances are further form of averaging and that would mean complicated by their relationships to the that in many districts prices would have sources of supply—power stations, sub to go up. This point is made by a stations, primary and secondary trans correspondent in the Richmond Herald mission lines and low-voltage feeders. who says that about half of the Richmond They all represent different load-building Parliamentary constituency is supplied by characteristics and should therefore be the Barnes Council whose charges are handled by the man who has the necessary among the lowest in the country. He appreciation of the commercial-technical suggests that any national arrangement problems peculiar to the supply industry would mean higher prices to these con behind every sales transaction. It is one sumers and considers that they should thing to build a network or line and think well before supporting any policy another thing to load it—properly. which would- deprive them of the advan tages of the efficient management of the T h e claim of the Mary- local electricity undertaking. Small Water tavy station of the West Powers Devon Co., with its in As we have frequently stalled turbine capacity of Ownership mentioned, the United some 2,600 kW, to be the largest hydro of U tilities States also has its electric plant in England illustrates the publicly v. privately-owned paucity of water-power resources in this utility question. The Federal Government, part of the United Kingdom. It also with its huge hydro-electric schemes, has illustrates what might possibly be done in become an important factor in the genera other instances. The output of the under tion of electricity supply. On the distribu taking (in which is included that of some tion side, apart from the “ co-operatives ” smaller interconnected hydro-stations) last formed to take supply from Government year reached the useful total of 15 million sources, there is very little to compare kWh, compared with 11 million originally with our municipal-authority undertakings. expected. An especially notable point in Nevertheless there is a movement in the Mr. F. E. Pitt’s chairman’s address to the States for public ownership based largely I.E.E. Devon and Cornwall Sub-Centre on a false picture of the nature of the was the arrangement adopted for operating utility companies. According to the the plant in conjunction with a bulk Electrical World, advocates of public supply from the grid, to which it was ownership are making headway by means connected at 33 kV about three years ago. of propaganda that is not adequately A t Marytavy water stor- countered by the utilities which should “ Peak age is provided for the get together on a national basis to place Lopping ” equivalent of 11,000 kWh their case before the public. —enough to cope with the daily peaks, leaving a margin for drought. As the I.M.E.A. report The base load is supplied from the grid, as Services for for the past year indicates, it would be in the case of thermal stations, Temporary there is still uncertainty so that maximum demands may not be H ouses regarding the allocation of carried by the transmission system. This the cost of services to implies an overall economy in paying the temporary housing estates. The Ministry grid running charges, even at the present of Health has said that undertakings will high price of coal, rather than in making continue to be governed by existing the fullest use of “ free ” water entailing statutory obligations and that financial expenditure on greater storage capacity. arrangements will have to be agreed in each individual case with the housing In some quarters the authority. This appears to mean that Levelling Up idea is being fostered that electricity suppliers are bound to provide the public ownership of services and then recover what they can of electricity undertakings would lead to the cost. The Ministry thinks that in uniformity of charges and a ' general many cases the mains laid to temporary reduction. Those who know anything housing sites will still be wanted when the about the business are aware that any temporary houses give way to permanent attempt at securing uniformity of charges ones but it seems much more likely that (as distinct from tariffs) could only be a these will have to be built elsewhere June 15, 1945 Electrical Review 851 mean d ha\t 1 by j Htrilj I nique Work« Distribution -blQOaj >liedh ges jt: I ft ngengf ise»> e adijr. itofft rep® I® has I if-mi venmc In the Electrical Review o f M ay 30th we des Work had begun on a section of the site ®B,Ï cribed methods o f production o f opencast coal before the electrical machines were allocated, at Wentworth, Yorkshire. This article deals and the siting of the substation presented aL-' with the electrical distribution scheme, and we certain difficulties, as the position had to be Bara’ are indebted for their collaboration to Elec such that future working of the site would not tricity House, Ltd., who carried out the work necessitate its removal, and that it would of the electrification scheme, the initial elec still be as near as practicable to the point at trical lay-out o f which was prepared by Hoare, which the supply would be required. 010 2 Lea & Partners. The final position chosen for the substation edte A FULLER appreciation of the scheme is towards the north of the site on previously J&k will be made possible by further details excavated ground, as shown in the heading tO 3 of the situation and lay-out of the site, which block, and it was decided to provide a raft lies roughly to the south of Wentworth of concrete to carry both the outdoor trans village and extends from the main Sheffield- former and the substation buildings proper. .èp: Leeds road along Hague Lane to Wentworth Wood- il M ¡topfe house. The northern boun dary is a private road giv ing access to the village 1 repor church; two farms are situ lDÜJui ated at about the centre of icenar catma Consumers' equipment in the substation comprises (left) a ÎÏS ! five-unit, 3 3-kV totally-enclosed Minsj industrial-type switchboard injsri and (right) a four-unit 400-V switchboard ; II kV equipment m at rear right faß staL the area being excavated, hoiffi! and roadways serving these ¡a fa farms also link up the proni village and subsidiary main ■ can s road across the site. The tat is area of the whole site is poraT1 about 170 acres. The dragline and bucket A supply was afforded by the Yorkshire mût excavators work across the site approximately Electric Power Co., from its 11-kV system, ÎDfli west to east, gradually progressing northward through a 2,000-kVA 11/3-kV transformer. th aï towards the village of Wentworth. Considerable thought was given to the 854 E l e c t r ic a l R e v ie w June 15, 1945 question of distribution to the various points order to permit the excavators to work the where supplies would be required to operate full length of the site section under review the the electrical excavators, bearing in mind that l.v. line was diverted to follow the boundary machines would be moving continually about of the section. the site and that scrapers would also be The consumers’ equipment in the substation operating in the area. comprises on the h.v. side a five-unit Cromp It was decided to lay three 3-kV p.i. wire- ton Parkinson “ Klad ” 3-kV totally enclosed armoured cables along the northern boundary industrial-type switchboard, each switch hav ‘of the site, and extend southwards at right- ing a carrying capacity of 300 A. Four of angles to the cable run by means of overhead these switches serve excavator feeders, and lines, in each case to a point adjacent to the the fifth one a 500-kVA 3-kV/440-V three- working cut. This arrangement permits any phase four-wire transformer. Each of line to be shortened back by one or more the switches serving the excavator feeders is spans as the excavation of the site is pro fitted with overload releases, shunted by ceeded with. time-limit fuses giving short-circuit protection The arrangement also provides the maxi only, to ensure that these breakers do not mum flexibility in allowing the excavators to open on overload consequent on the severe be transferred from section to section with the duties involved. The rupturing capacity of minimum of delay. In view of the onerous conditions of the site the overhead lines have been erected generally in accordance with standard 11-kV construction, although they are operated at 3 kV. A supply was also required for the offices and workshops at the south end of the site, so a four-core 0-15-sq. in. 400-V cable was laid with the 3-kV cables. This cable was also extended southward to the office site along what was then intended to be the main cut through the site. It was found later, how ever, that this cut was unnecessary, and in Field units are housed in the sim plest of wooden huts which are transported, complete with their units, on a sledge all the h.v. switchgear is 25 MVA. The l.v. switchgear comprises a four-unit Crompton Parkinson switchboard consisting of one 800- A Klad ” switch controlling the l.v. side of the transformer, two 200-A outgoing switches serving the feeders to the offices, etc., and a sheet-steel cubicle switch accom The 3 3-kV transmission is extended southwards from the modating two 30-A triple-pole-and- cables by means of an overhead line neutral English Electric h.r.c fuses June 15, 1945 Electrical Review 855 for local lighting and power purposes in the switch unit serves either a 200-HP or a 100- vicinity of the substation. The 800-A switch HP motor, the current transformers on these has a rupturing capacity of 25 MVA. while switch units, which have come to be termed “ field units " because of their location, have a ratio of I00/5A, with a tapping on the secondary to give the equivalent to 50 A of primary current to cater for the dual control. The tappings can be changed by means of external links in a few seconds. Back-up overload releases shunted by time-limit fuses wired with No. 19 SWG fuse wire to give short-circuit protection during starting, i.e.. during the period when the normal overload is out of commission, are also incorporated. The time-limit fuses will pass a current trans former secondary current of 15A for 10 seconds, which is equivalent to a peak of approximately six times the normal full-load current of the motor. A single-pole earth- leakage relay with a minimum of 10 per cent, of the current transformer primary rating. i.e.. 5A. is also fitted to each of these field units. For the necessary’ flexible connections to the excavators four-core rubber-insulated t.r.s. sheathed, pliable armoured, and t.r.s. sheathed 3-kY grade trailing. cable is used, the minimum size of which is 0-0225 sq. in. To accommodate the outgoing trailing cable, To further render the system more flexible in each field unit is fitted with a back-entry plug w ith su ¡tab le flange modification coping with the movements about the site of the 200-A outgoing feeder units each have a rupturing capacity of 10 MVA. At the working end of each excavator feeder is installed a similar switch unit to that at its other end. but it is fitted with a special starting relay’ com prising two over load coils and one For flexible connec shunt coil fitted to tions 4-core 33-kV trailing cable is dash-pot time lags. used. heavy - duty On starting the sectionalising cable coupling boxes add shunt coil is imme to flexibility y— diately energised, and the contacts the dragline ex short-circuit the cavators the trailing two overload poles cables are generally . arranged in 100-yd. until such time as l-S'rie***-SU Î. the period of lag lengths, and Ellison has expired, when the armature rises and heavy-duty cable-coupling boxes are used opens the short-circuited contacts, thus for extending the cable lengths, thus per putting the overload release into service. mitting cable sections to be taken out of Owing to the severe conditions under which or added to the system with a minimum delay. the motors operate, and to the fact that each To accommodate the t.r.s. trailing cable a 8 5 6 E l e c t r ic a l R e v ie w June 15, 1945 Reyrolle “ flit ” type plug is fitted to each The field units are housed in the simplest field unit for back entry, the necessary flange of wooden huts, and a unit is transferred modification having been specially made for from one point on the site to another by this purpose. mounting the hut, complete with its unit, on Owing to the presence of large spoil heaps a sledge which is drawn by a tractor to the new position at which the supply is required to operate. Electrically-operated excavators, shovels, etc., normally work for 22 out of each 24 hours, so that main tenance has to be carried out during a two-hour shut-down period which is not continuous, b u t is made up of half-hour breaks for meals. In view of the site con d itio n s maintenance troubles can be considered reasonably small Nearly all the drivers had to be specially trained, and in view of this fact and of the site conditions already des cribed the maintenance troubles can be con sidered to have been very small. Difficulty has been experienced as the result of the scrapers and tractors running over the k trailing cables, and on one' occasion one of the excavators fouled and soil dumps and to the positions of the an overhead 3-3-kV line with its boom. Each working cuts it has not always been possible time the fault was cleared satisfactorily. to take the most direct route, or the best one, In addition to the supplies for the excavation for the overhead line for supplying a par machinery and the offices and workshops, a ticular service, and considerable deviations supply is given direct from the Yorkshire have had to be carried out on several Electric Power distribution system at 400-V occasions. It was anticipated that difficulty to a labour camp and to a plant repair depot would be experienced with the earthing system situated at the south-east corner of the site. but this fear has proved to be unfounded. Further, there is another connection from Earthing is carried out with cast-iron plates a Y .E .P 11 -kV line to a substation serving the buried to a depth of 5 to 6 ft. In the earlier screening plant, through a 500-kVA 11-kV / days these plates were surrounded by coke, 400-V transformer. From this substation a but as the machines progressed fairly rapidly separate l.v. underground feeder serves each it became necessary to move the field units at of the screening plants. frequent intervals, and the plates have been Our thanks are due to Sir Lindsay Parkinson buried directly in the earth with satisfactory & Co., Ltd.. for permission to visit the site results. and take the accompanying photographs June 15, 1945 E l e c t r ic a l R e v ie w 857 Power Station Efficiency A Means of Rapid Calculation T HE nomogram described By G. Oldroyd, steam = 1442-6 BThU and below, which can be easily Graduate I.E.E. the liquid heat of the feed constructed on the basis of two water = 238-84 BThU. It formulae, viz., boiler efficiency and station follows that H - h = 1442-6 - 238-84 = overall efficiency, enables the engineer-in- 1203 76 B ThU , so that boiler thermal charge of a power plant to gain a swift _ . .. 1203-76 x E ... and sufficiently accurate view of the con efficiency, NB, = ----- ^ (2) ditions obtaining without the necessity for 1203-76 x E working out calculations. a nd c = ------j , — - Boiler efficiency, NB, = ^ ^ ——, where Similarly, from the station overall efficiency 3412 , . 1203-76 x E E = actual evaporation in lb. of water per lb. ; therefore K, S formula, C = L XN t i>B of fuel S = total steam generated, F = 3412 * vt 3412 total fuel consumed, C = calorific value of ~ L X NT anU ~ 1203-76 x E x L- S F S fuel in BThU per lb., H = total heat of But E x L = p X -jj = |j = lb. of steam/ steam in BThU per lb. and h = liquid heat of feed water in BThU per lb. , .... . M _ 3412 N b kWh,. . Nt , £ X \ 3412 1203-76 lb. of steam per kWh Station overall efficiency, NT, = ç x L '' N b = 2-84 where 3412 = BThU in a kWh, and L ■ lb. K ...... (3), F where K = lb. of steam per kWh, i.e., the of coal per kWh generated (U) = jj. turbine steam consumption. From equations The present nomogram was constructed (2) and (3) the nomogram can now be con for steam conditions of 400 lb. per sq. in. structed as follows. gauge and 850 deg. F. and feed water tem The C scale is a 10-in. log scale calibrated perature of 270 deg. F. (Steam Tables, from 9,000 to 20,000 BThU, and the E scale Keenan and Keyes, 1936.) Under these is a 5-in. log scale on the same base calibrated conditions the total heat in one pound of 5 to 10 and placed midway between the C E = Actual evaporation in lb. water per lb. fu C = Calorific value of fuel In BThU per lb. Ns = Turbine thermal efficiency per cent. 858 E l e c t r ic a l R ev iew June 15, 1945 scale and the NB scale, which is another 10-in. The results obtained from the nomogram log scale calibrated 50 to 100 per cent, and are therefore seen to check with the calculated set down on the C scale by H - h, or, in results. The best method of reading the this case, 1203- 76. nomogram is by means of a piece of thin Placing a rule across the values of C and E fuse wire held taut across the values required, E the nomogram being pasted on a piece of gives the division -g, this result being multi stiff cardboard. plied by 1203-76 due to the setting down of By placing another exactly similar inverted the Nb scale, thus giving the value 1203-76 x scale on one side of the scale representing E lb. of steam per kWh, turbine thermal q , which is the boiler thermal efficiency. efficiency also can be read from the nomo If the rule is now placed across this known gram. For the steam conditions named, value of Nb, and the lb. of steam per kWh , „ . 3412 x 100 on the K scale, which is a 5-in. log scale on turbine thermal elliciency — 1203*76 x — the same base as NB, the result will be read 2-84 X 100 ■ . If, therefore, 28-4 is marked K N b as the reciprocal of i.e., ^ on the inverted on that scale opposite to 10 lb. per kWh and 10-in. log scale for NT, which is set down on other values inversely pro rata, the thermal Nb by the reciprocal of 2-84, i.e., 0-352. efficiency of the turbine at any given steam consumption per kWh for the pressure and The result is thus 2-84 x which is Nx, temperature conditions covered by the nomogram can be read directly. the K. scale being placed midway between the N b and NT scales. The nomogram could have been extended S S Two-million Volt X-rays to give the results E = p and K = y, but Penetrating Very Thick Steel this was not considered worth the trouble as a LARGE 2,000,000-V X-ray outfit has been slide rule will give these results just as quickly. A completed by the General Electric Co. of The best method of construction is to America to keep pace with the welding of trace all the scales on tracing paper, the increasingly heavier walled pressure vessels. It is described by Dr. Ernest E. Charlton, 10-in. scales from semi-logarithmic graph who worked on its development, as 78 times as paper and the 5-in. scales from the stock or fast as the 1,000,000-V outfit for examining slide of any ordinary slide rule, taking care 8-in. thickness of steel and it has made a satis that the graph paper for the 10-in. log scale factory exposure through a foot of steel in is the same as that on the slide rule used; about 2 hr. with the film at a distance of 3 ft. alternatively a slide rule could be used from the end of the tube. throughout. Like its predecessor, the new tube has multiple electrodes, and the electrons, starting from a Example of Application heated filament at the top, are speeded in stages until they have the total rated energy. After As an example of the use of the nomogram, they attain full speed, which is about 179,000 assume the calorific value of the fuel to be miles per sec. or 96 per cent, of the velocity of 10,900 BThU per lb. actual evaporation = light, they strike a copper-backed tungsten 7- 5 lb. per lb. Reading across these two target at the end of the tube, whence X-rays values on their respective scales, gives 83 per may either be “ squirted ” from the end or cent, on the boiler thermal efficiency scale. sprayed from the side. The new tube has 24 From this value read across the value 10-2 on steps averaging 83,500 V at each stage. Con struction of the tube was made possible by use the lb. of steam per kWh scale and on the of rings of “ Fernico ” between sections of scale for station overall efficiency read 23 per glass; the alloy and glass can be fused directly cent. These figures are based on the follow together. High voltage is supplied by a reson ing:—Total fuel consumed, 2910 tons; total ance transformer which has no iron core* and steam generated, 48,800,000 lb.; kWh the X-ray tube is placed at its axis. Both tube generated, 4,760,000; actual evaporation = and transformer are in a closed metal tank, 5 ft. 48,800,000 in diameter and 8 ft. long, which contains freon gas for insulation. 2910 x 2240 Though the rays are capable of penetrating , „ . 1203-76 X 7-5 x 100 very thick specimens, they will still not over thermal efficiency — 10900 expose sections which are considerably thinner, 83 per cent.; station overall efficiency = n k i m n h v 011’ y h° alSO P°>ntS OUt that 83 nirt ^"ray tUue at a distance from the 2-839 X j q 72 = 23 per cent . p?rLbein.§ radiographed mcreases the accuracy plc,tuIes by reducing distortion. Rays Using the basic formula:—Station overall 3412 candle.ranfile A defect in a target casting like that light is closefrom toa efficiency = 1090o x 1-36 x 100 = 23 per the film will appear in its actual size, while one fuel 2910 2240 that is considerably nearer ‘to the tube will he x enlarged; but when the X-ray generator L Ti,»n cent., where 1-36 = = 4 7 6 0 .0 0 0 ‘ back both will be recorded correctly. June I “«, 1945 E l e c t r i c a l R e m e w 859 Municipal Electricity I. M.E.A. Council’s Fiftieth Report T HIS year the Incorporated Municipal drawn its support to the relaxation proposed. Electrical Association reaches its jubilee The Association has for some years en and the Council's fiftieth annual report deavoured to secure a Standard Specification covering the year ended in May mentions that for flat pin plugs and during the year discussed the most appropriate way of celebrating this the subject further with the British Standards event is under consideration. The report Institution. The matter has also been con (which was presented at yesterday’s annual sidered by the Electrical Installations Study meeting) also states that Alderman Sir Committee of the Ministry’ of Works which William Walker, M.I.E.E. (Manchester), is has recommended a 3-kW standard plug. to succeed Mr. W. P. Lilwall as president, The recommendation has been accepted by thus becoming the first local authority the B.S.I. Industry’ Committee and the matter representative to occupy the position ; has been referred back to the I.E.E. for Mr. J. S. Pickles, B.Sc.. M.I.E.E., county discussion of details with B.E.A.M.A. electrical engineer. Dumfries, has been elected The Electrical Research Association has vice-president. Mr. H. C. Lamb, formerly agreed to act as a clearing house for fault and city electrical engineer, Manchester, and a breakdown records provided that the full past-president, has been elected an honorary' support of electricity supply undertakings is member. secured. The Council expresses the hope During the year East Grinstead U.D.C. that engineers will co-operate in this matter. joined the Association, bringing the total membership up to 349, equivalent to 95 per Grid Tariff Proposals cent, of the municipal undertakings in Great In view of the fact that the existing grid Britain. Messrs. G. J. Evans. P. E. Rycroft. tariff arrangement expires at the end of this J. M. Bowman and C. W. Salt have been year, meetings have been held to discuss elected associated members. Mr. B. Handley revisions of the tariff. The Bulk Supply and (past-president) is to retire from the Council Generation Committees, combined for the upon his relinquishing his position as city purpose, have made proposals as a result of electrical engineer of Portsmouth and a which the Council has suggested to the Central tribute to his services to the Association is Electricity’ Board that provision should be paid in the report. made for:—The alleviation of the payment for maximum demand resulting from a cold Voltage Standardisation snap; payment in part only for maximum In response to a memorandum from the demands occurring outside the present m.d. Electricity Commissioners in which it was assessment periods; exception of the period stated that the Minister of Fuel and Power from noon} Saturday to midnight Sunday, had suggested that the time had arrived for and Christmas Day, for the purposes of m.d. a review of the subject of voltage standardisa assessment ; the retention of the present form tion, the matter was referred to the Joint of stepped m.d. charge, including the promo Committee of Electricity Supply Organisa tional element arising from the “ basic de tions. This Committee later submitted a mand ” principle ; the basing of the coal memorandum to the Commissioners in which adjustment clause on an up-to-date figure for it proposed that the declared standard should thermal efficiency and the estimated actual be a band of 230 240 V with a tolerance of price of fuel in each district ; and the 4 per cent, below 230 and above 240 V. In application of the new tariff for a period not order to avoid unnecessary expenditure, exceeding five years, in view of the instability especially in the case of industrial consumers of costs. Proposals giving effect to these at present supplied at between 10 and 15 V considerations have been submitted to the above or below the recommended standard, Board. the Committee considered that for an in Reference is made to several bulk supply terim period of five years a 6 per cent, negotiations in w’hich the Council has par tolerance should be allowed, and thereafter ticipated. The joint committee of supply subject to review. It was thought that this authorities and manufacturers has continued relaxation would permit the continued use of its deliberations on the standardisation of existing plant throughout the remaining meters. The Generation Committee, after period of its effective life and would materially receiving representations from selected station reduce the cost of standardisation. owners, has asked the Electrical Research As the Incorporated Association of Electric Association to investigate the loading and Power Companies has dissociated itself from design of cooling towers with a view to these views and has submitted independent ascertaining whether further steps can be observations, the I. M.E.A. Council has with taken to improve their efficiency, more par 860 F l e c t r t c a i. R e v ie w June 15, 1945 ticularly the continued efficiency during their vear of the I.M.E.A./B.E.A.M.A. and useful life. The E.R.A. has consented to do I.M.E.A./E.L.M.A. Joint Committees and this. the Electricity Taxation Advisory Com The Council has recommended members to mittee. It is reported that the National Gas charge 30s. per 25-W lamp (with pro rata and Electricity Committee established in 1939 charges for lamps of higher wattages) for the has been dissolved “ owing to changed lighting of telephone kiosks. Members have conditions.” been advised not to enter into new obligations The accounts show a total revenue for the with radio rediffusion companies as there is a year of £13,699 (against £13,185 for 1943-44) possibility of legislation permitting distribut- and expenditure of £12,495 (against £11,990), tion authorities to use their mains for the leaving a credit balance of £1,204 (£1,195). purpose. Appended to the report are brief accounts Supply to Temporary Houses of the work of bodies upon which the Association is represented. Among these In view of the ambiguity of certain para is the Joint Committee of Electricity Supply graphs in the memorandum on temporary Organisations, whose work has already been housing produced for the guidance of local referred to. Apart from voltage standard authorities, representations were made to the isation, the Committee has dealt with income Ministry of Health regarding the financial tax allowances in respect of supply agree responsibility for the provision of services to ments ; the classification of the fuel industries temporary housing estates. The Council was in order to produce figures on a common informed that the laying of mains and services basis for supplies to industrial consumers; by undertakings would continue to be wayleave payments for interference with governed by existing statutory obligations agriculture; and Parliamentary Bills. and financial arrangements would have to be In the summary of the work of the Con agreed in each case with the housing authority. joint Conference of Public Utility Associa In many instances the same sites would be used for permanent houses and therefore the tions reference is made to the efforts of the capital expenditure would not be wasted. Conference to obtain definite information The Conjoint Conference of Public Utility regarding the prom ised W ar D am age Bill. Associations has been asked to consider the The Conference was informed by the Financial matter in order that a common policy for all Secretary to the Treasury in December last utilities can be formulated. that there was still a possibility that a Bill One of the Association’s Centres has would be introduced during the current suggested that the Association should have a session. He saw no reason to suppose, how greater representation on the Electrical ever, that any future Government would fail Research Association and that the Associa to adhere to the principles laid down in the tion should support an appeal for increased White Paper on the subject, which constituted contributions to the E.R.A. The Council an assurance that at least half of the damage sympathises with the proposals but considers suffered would be met by the Treasury. that in view of certain anomalies which exist the matter should be decided by individual undertakings until a return to more normal Radio Section Luncheon conditions. BOUT 160 members and guests attended Support was given by the Council to pro A the first informal luncheon to be held by posals by the Conference of Local Authorities the Radio Section of the Institution of Electrical Owning Electricity Undertakings in Greater Engineers, which took place at the Waldorf London that there should be an extension of Hotel last week. Mr. H. L. Kirke, chairman of loan repayment periods in respect of cookers, the Section, presided and expressed the hope that it might become the forerunner of an installations, DC/AC change-over and AC annual event and that later on more social meters. The Electricity Commissioners inti functions might take place. Mr. P. Good, vice- mated that a review of loan repayment president, who deputised for the president (Sir periods could be made more appropriately in Harry Railing, who was unable to be present), relation to any proposals for general re spoke of his early connection with wireless, organisation. The whole question of system which dated back to his school days while standardisation was under review and thè studying under Prof. Ayrton. Commissioners intended to -give sympathetic Mr. G. O. Watson, chairman of the Installa- tl0j S ^ e.ct'on> speaking on behalf of the guests consideration to the question of repayment and chairmen of the technical sections, said that periods for loans for meeting any expenditure there were now four of the latter, each depending involved. upon the work of the others ; but they all still Following upon a further increase in coal belonged to one and the same Institution, so it prices the Council is again to approach the behoved members to avoid over-specialisation. Commissioners, and, if necessary, other S ir Edward Appleton remarked upon the wisdom of the I.E.E. Council in encouraging Government Departments, upon the question sectionahsation under separate chairmen to of increased electricity charges. satisfy the particular needs of specialist grouns The report refers to meetings during the all of which were catered for by the mother body' June 15, 1945 E l e c t r ic a l R e v ie w 861 Dew Point of Flue liases Recording Apparatus Using Electrical Conductivity Method I NVESTIGATIONS into the By W. R. W ootton surface are arranged in the causes of severe fouling and manner described by Johnstone corrosion of the air heaters of two large and also by Harlow , 2 but modified with a stoker-fired boilers indicated a definite view to removing some of the possible faults association between the dew point of the of these earlier instruments. For instance, gases and the severity of the trouble. The no metal parts are in contact with the gases amount of sulphuric acid produced in this prior to analysis; neither do the latter pass plant generally exceeded 100 lb. per million over any surface at a lower temperature than of gas and consequently only a small amount the analyser surface that would cause pre of gases needed to be aspirated through a condensation. AC is applied to the electrode transparent lube to demonstrate the rapidity path so that polarisation effects are eliminated of condensation and resulting fouling. and the temperature of the analyser surface Photomicrographs, taken through very is regulated smoothly by the employment of a thin-walled Pyrex tubing, enabled the process Thyratron. of fouling to be recorded graphically. Within The electrode path of the analyser surface a minute of commencing aspiration, a is arranged as the resistance leg of the cloudiness on the inside of the tube became resistance-reactance bridge controlling the visible to the naked eye which a magnification grid of the Thyratron. The effect of forma of 100 showed to be composed of minute tion of dew on the analyser surface is to shift droplets of liquid each centred on a dust the phase of the grid relative to the anode particle. Within three minutes the droplets thereby increasing the output current flowing had increased in size many times and were in the heater which controls the temperature running into one another, forming pools of of the analyser surface. The tendency irregular shape which were already trapping towards an increase of dew point is thus dust particles of considerable size. In about almost anticipated and the temperature of ten minutes all the droplets had fused into the analyser surface immediately responds one another and a continuous film of liquid and remains steady at the new figure. resulted, to which dust of all kinds adhered. To the naked eye, the tube appeared quite Description of Apparatus dry up to the point where it came outside the In Fig. 1 the Pyrex sampling tube A is boiler casing and then to become suddenly integral with the cup B which surrounds the wet where it was cooled by contact with the analyser bulb C. The cup B is wound atmosphere. By fusing a fine wire thermo externally with asbestos-insulated resistance couple into the glass tube and altering the wire D, so that the temperature of the cup, immersion until the line of wetness coincided together with a part of the sampling tube with the couple, the temperature of con itself, can be raised to any desired temperature densation was readily established. It was to prevent precondensation. The inlet end invariably about 300 deg. F. of the sampling tube is also fashioned into a cup E, which is stuffed with glass wool. Principle of Operation The analyser bulb carries two platinum This simple, though reliable, dew-point wires fused on the surface at F a short instrument led to the construction of a distance apart. Fused into the glass, between recorder similar to that described by John these two electrodes, is a fine-wire platinum stone. 1 Using the electrical conductivity and platinum-rhodium thermocouple. All method of dew detection and operating in leads from couple and electrodes are carried alternate cycles of heating and cooling of the inside the bulb and are brought out at the analyser surface, this apparatus confirmed end G. This construction ensures strength that high dew-point temperatures were and one instrument after more than 10,000 present continuously. hours of use shows no signs of deterioration. The fluctuating temperature indication, The jet-tube H is also part of the analyser however, precluded accurate observation of bulb structure but the fine-wire heater J is small changes in dew-point temperature and carried in a separate vessel K. since these small changes corresponded to Around the spherical head of the analyser considerable variations in amount of acid bulb two insulating fibre discs L are tightly produced, the instrument was modified to cleated by means of four brass rods M. eliminate them. These rods extend to the full length of the The sampling apparatus and analyser sampling cup B and also carry the brass (1 ) “ A n Electrical Method for the Determination of (2 ) “ Heat Liberation and Transmission in Large the Dew-point of FIue-Gases.” Univ. Illinois Circular Steam-Generating Plants.’/ Journal Inst. Mech. Engrs. 862 E l e c t r ic a l R e v ie w June 15, 1945 disc N, which holds the analyser bulb between 700 and 1,000 deg. F. and the steam assembly tightly to the sampling part and yet ejector draws cold air through the jet-tube allows easy separation for cleaning. so that the analyser bulb surface is at the The aspirating connection P is joined by ambient temperature. stout rubber tubing to the drain-bottle Q Immediately the gas flow begins, the and thence to the orifice bottle R and finally condensation of water-dew (the dew point to the steam ejector S. Normally, about of which is invariably higher than the ambient temperature) causes a sudden production of current in the heater J, the temperature of which increases rapidly, the effect being generally an in stantaneous rush of maximum current, in dicating a short- circuit of the dew path, Fig. 2. The heater thus raises the temperature of the air being drawn through the jet-tube and the analyser sur face temperature rap idly increases. The dew-point temperature is soon reached, and exceeded, and most of the water-dew which had condensed is evaporated. As this Fig. I.—Diagrammatic arrangement of apparatus happens, the conduc tivity of the dew path 20 cu. ft. per hr. of gas is sampled. The decreases and the current in the heater also other connection T is joined directly to the decreases smoothly in sympathy. ejector and in this way induces the jet of cold The temperature rise of the analyser surface (or heated) air to play on the back of the is thus arrested and the bulb starts to cool. analyser surface. As the dew-point temperature is passed once The thermocouple is connected to a more, dew again condenses and the cycle is potentiometric type of temperature recorder repeated but at greatly reduced amplitude. U and the platinum electrodes are led to the After about one minute the instrument has valve amplifier V, in which the Thyratron ceased “ fumbling ” for the dew point and is arranged as a phase-shift rectifier in the orthodox manner. The capacity of the con denser X controls the sensi tivity of the amplifier and the smallest value consistent with stable operation is chosen. The average conductivity of the dew- film is then a minimum and the smallest changes in condensa tion characteristics are made evident. The maximum output of the Thyratron, corresponding to a heavy dew deposition across the electrodes, is about 1 A, 1,000 V being applied to the anode under no-load conditions. The fine- Fig. 2.-Response of instrum ent to high- and low-dew-point gases wire heater J reaches red heat with the current of air flowing over it at thereafter steadily records the water dew maximum anode current. point, unless there are any reasons (as there The apparatus is fitted to a part of the invariably are) for an elevation of dew point plant where the temperature of the gases is above that corresponding to the water-vapour June 15, 1945 E l e c t r ic a l R e m e w 8 6 3 partial pressure. It will be found that the operated. It then instantaneously rises to a true water dew point is indicated for only temperature considerably higher than can be a few minutes, that is, while the analyser explained by the higher vapour partial bulb remains clean and free from contamina pressure. Since the dust removed by soot- tion by solids in the gases which have found blowing in this plant has invariably shown their wav through the glass wool filter. The high sulphur-trioxide content, some of it can water-soluble fraction of these minute solids, reasonably be assumed to be liberated when dissolving in the dew film, de presses the vapour pressure of the condensate and raises the dew point by possibly from R 10 to 30 deg. F., the dew point recorded after the first five ( minutes or so being higher than ---D-l the calculated figure by this t amount. A further elevation o f dew point, owing to the presence of 3 200 sulphuric acid in the gases, may P now manifest itself. Thus, as the * true water dew point would be indicated for only a few minutes, the elevation due to water- TIM E - HOURS soluble solids is likewise of short Fig. 4.—Effect of different coals on the dew point of flue gases from the same plant its temperature is no longer depressed by proximity to cold tubes. Each of the other maxima following B can be traced to the operation of a specific soot- blower, although some of the latter produce no effect, due probably to stratification and possibly to the “ inert ” char acter of the dust. After com pletion of sootrblowing, the instrument reverts to a practic ally steady recording of the dew-point temperature, C. duration and the temperature rises further, At D, the injection of a small and quite at first slowly and finally with great rapidity inadequate amount of ammonia gas into the until, with some " fumbling,” the acid dew flues is seen to result in an apparent elevation point is reached. Thereafter the instrument of dew point which persists as long as the continues to record this dew point and its ammonia injection is maintained. Gradual variations. increase in the amount of ammonia used In Fig. 2 a comparison is made between results in further steady elevation of dew the condensation characteristics of flue gases point until about 530 deg. F. at E. The from two large boilers in the same power addition of more ammonia then results in a station. The stoker-fired plant shows a complete collapse of dew point down to the temperature record which, from the com region of the water dew point, F. mencement of testing with a clean instrument, It is thought that the elevation produced passes, from the water dew point, through the during insufficient injection is due to the primary elevation, to the acid dew point. formation of molten ammonium bisulphate The pulverised-fuel-fired plant shows only the on the analyser bulb surface and this theory water dew point and the primary elevation. finds support in the decreasing conductivity The response of the instrument to changes of the dew path with forced decrease in in the nature of the gases is strikingly demon temperature—an inversion of the normal strated under soot-blowing conditions and tendency. Certain coals which cause fouling during an experimental period of ammonia of economisers and air-heaters behave as injection, Fig. 3. At A, the dew point though partial neutralisation were taking recorded is practically steady until, at B, one place. The instrument readily detects these of the combustion-chamber soot-blowers was and they can be diverted, as a rule, to other 864 E l e c t r ic a l R e v ie w June 15, 1945 plant where their effect on availability is less. accordingly, it provides readily much valuable Fig. 4 shows a comparative record of three data concerning the effects of operational different fuels burnt in the same boiler plant changes, together with such academic con under similar conditions. Fuel B produces siderations as effect of mass-velocity on a negligible elevation of dew point and gives precipitability. maximum availability as regards fouling of Although reference has been made through the low-temperature heat-reception equip out to the temperature recorded as being the ment. Fuel D produces a considerable “ dew point ” of the gases, the apparatus elevation of dew point and severe fouling basically records the highest temperature at and corrosion of any parts of the plant which which a given surface can be maintained so are below this temperature. Fuel R results that electrical conductivity across it is present. in the most rapid fouling of the three but The passage of current would be permitted apparently less actual corrosion than D. by the formation of liquid or by the wetting The response of the instrument to the change of solids on the surface or by the presence of in dew point, concomitant with change in fused crystals. Whatever the cause, it is fuel during operation, is shown by the certain that the higher the temperature upper curve. indicated the greater is the trouble from fouling The instrument has been found of consider of the low-temperature end of the plant. able value in plants which are suffering loss The author wishes to express his thanks to of availability 'due to fouling of economisers Mr. W. N. C. Clinch, general manager of and air-heaters. Apart from enabling the the Northmet Power Co., for permission to fuels in use to be classified and distributed publish the data contained in this article. Hôtes from South Africa From Our Capetown Correspondent T HE South African Director-General of to begin on the first section of the new Supplies recently released the news that Bulawayo power station which will cost the Heavy Electrical Plant Committee (Great £500,000. The whole undertaking will Britain) had authorised the provision of plant involve an expenditure of about £3,000,000, with a total capacity of 186,500 kW which is and will take some years to complete. This needed in South Africa by 1947. station is to operate under modern conditions The Electricity Supply Commission, the of steam pressure and temperature, one of Victoria Falls Company and the various four power stations in Southern Africa to municipalities expect the South African have adopted such conditions. The first demand for electric power to expand con section will have a capacity of 15,000 kW siderably after the war. The Pretoria city and the entire station 120,000 kW. The electrical engineer has said his Council will work is now three years behind schedule. have to plan for an expenditure of £6 ,0 0 0 ,0 0 0 It is thought that by the time the new power to meet the normal expansion in the supply station has run its course it will be economic of electric power after the war. The demand ally possible to transmit electric power from for electricity in Pretoria is now so great the Victoria Falls. that a high-voltage transmission line has had to be built from the Reef to supplement the Progress at Durban Pretoria output. Quite apart from abnormal In the year ended July 31st, 1944, the con increases resulting from industrial expansion, sumption of electricity at Durban increased extensions to the city’s power station and from 242,471,880 to 266,784,632 kWh, or distribution system are essential. It is now by 10 per cent., and the number of consumers realised that without an expansion of the from 40,287 to 40,913 (1-6 per cent.). Energy South African power supply organisation purchased in bulk by the municipality from there can be no increase in mining and indus the Electricity Supply Commission totalled trial production. 290,196,926 kWh, at an average cost of The municipalities are planning extensions 0- 309d. per kWh. This total included 886,160 to their electricity undertakings to cope with kWh generated at the municipal power the post-war demand for power, and the station at Alice Street at tHe expense of the Electricity Supply Commission expansion Commission, under the terms of the agree programme is designed to meet the maximum ment. Energy generated at the jointly owned needs of its present and potential consumers waste-heat power plant at Huletts’ Refineries, in the future. These extensions cannot be Ti’oooJf*1’ (bc municipality totalled made if heavy electrical equipment cannot 15,888,500 kWh, of which 7,004,300 kWh be supplied by British manufacturers, and was used in the refineries and 8,884,200 kWh a long delay in the arrival of such plant may delivered to the municipal supply mains have serious effects. The peak load was 79,120 kW. The previous During the current year work is expected year’s peak was 74,800 kW. June 15, 1945 E l e c t r ic a l R e v ie w 8 6 5 CORRESPONDENCE Letters should bear the writers' names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents' opinions. Compression Cable greatest HP for a given weight, I have found the 2 0 0 -cycle three-phase 100-V system, V WOULD like to clarify the last sentence which eliminates commutation troubles, the in the third paragraph of the article on most satisfactory. There is need for an “ Compression Cable ” published in your association of plant engineers who are, I May 25th issue, describing the completed believe, the largest customers of the electrical 132-kV commercial installation at Osbald- industry. Though at present they have the wick. smallest “ say,” they are the greatest sufferers The changes in volume of the impregnating from any defects under existing conditions, compound in the cable dielectric, due to and no section of the industry could provide expansion and contraction following tempera more useful practical experience. ture variations caused by load changes, are Willenhall, Staffs. B . H i n k s . accommodated solely by the movement of the diaphragm lead sheath which is maintained Too Many Catalogue Sizes in intimate contact with the dielectric by the tffcNE correspondent on this subject appears pressure gas external to the sheath. The somewhat gleefully to accept the present purpose of the compensator connected to inefficiency with sundry playful references. each termination and consisting of a metallic This is not very helpful and is a sad reflection bellows holding insulating oil surrounded by on that irresponsible frame of mind which the pressure gas, is twofold :— one suspects may be a contributory cause of (a) To maintain a pressure on the oil in the the present muddle. The fact that the sealing bell at the same figure as the pressure corresponding need has been officially gas imparts to the dielectric in the cable approached, as described by the Director of through the diaphragm lead sheath. This the British Standards Institution, for the prevents any tendency of compound to building trades is surely sufficient indication migrate from the dielectric into the sealing that similar action could be taken with all bell. round advantage by the associations and (/>) To cater for movement of compound professional institutions connected with the from the bell due to expansion of the oil engineering industry. E f f i c a c e . during the summer months, a movement which is reversed during the winter months. Brimsdown. F. W. M ain, Huddersfield Kitchen Exhibition Technical Director, PENING a kitchen planning exhibition at Enfield Cables, Ltd. O the Huddersfield Electricity Department Showrooms, Market Street, the Mayoress, Mhs. Sidney Kaye, said that the model kitchen Portable Tools on show was within the reach of the majority of T1JAJOR advantages of electricity are housewives. It was not large but there was plenty of cupboard room and she welcomed -L’-*- flexibility of operation and portability especially the inclusion of a drying cupboard. of appliances, and it seems to me that the Mr. F. A. Ellis, the borough electrical engineer, importance of voltage in relation to portable described the operation of the kitchen and tools is not recognised as it should be. invited housewives to fill in a questionnaire In a recent article in the Electrical Review, relating to the design and arrangement of the Mr. R. S. Bennett advocated transformation room. The kitchen, which has been built by the Hull Corporation Electricity Department, to 25 V as a means of avoiding shock risks. is suitable for a house with a rateable value of This proposal seems to me to swing too far £12 to £15. The area of the kitchen is 102 in the direction of low voltage, as a large sq. ft. with a dining recess of 144 sq. ft. Room number of factors have to be taken into is provided under the sink draining board for consideration, such as increase in size and a refrigerator, cooker and wash boiler or washing weight of the tool and also of the connecting machine. There is also a number of post-war cable and switch, so that the disadvantages appliances on view, including washing machines, may easily outweigh the advantages. wash boilers, vacuum cleaners, kettles and irons ; film displays are given each day. The exhibition The first question is what is the highest closes to-morrow (Saturday). safe voltage that would give the greatest power/weight ratio ? I have over 300 of one type of portable tool operating under very Opencast Coal Winning adverse conditions and have found that with In the article under the above heading in the 100 V no shock of any consequence has been Electrical Review of May 25th, page 741, the received during the last ten years. Much electricity consumption for the workings in depends upon the type of tool, but for question was given as 120,000 kWh per week efficiency and durability combined with the instead of per month. D+ 8 6 6 E l e c t r ic a l R e v ie w June 15, 1945 make an annual grant of £100 to the E.l.B.A. A.S.E.E. Annual Report from the E.P.E.A. Benevolent Fund ; the ^lALARIES and conditions of employment decision was so worded that in future years the of members were given considerable atten matter could be considered in the light of cir tion during the past year by the Association of cumstances then obtaining. Supervising Electrical Engineers. The report for 1944-45 states that the movement initiated by the Association in connection with cost-of- Forthcoming Events living bonus has resulted in the “ ceiling ” being raised in some cases to £1,500 and in Saturday, June 16th.—London.—Comedy other cases being abolished. Effects of war Restaurant, Panton Street, S.W.l. Association strain were manifested by a lengthening of the of Supervising Electrical Engineers (N.W. periods of sickness, distress and death benefits; London Branch). Annual luncheon. the amount of benefit paid was about 19 per Stratford-on-Avon.— l.E.E. South Midland cent, greater than in the preceding year. Students’ Section. Summer outing to see New branches have been formed at Coventry, “ Twelfth Night.” Wolverhampton and St. Albans, and develop Tuesday, June 19th.—London.—Connaught ment generally has been so great as to justify Rooms, 5.30 for 6 p.m. l.E.E. Transmission the appointment of an organising secretary, Section. Informal dinner (tickets, 12s. 6d.). Mr. T. E. A. Verity, B.Sc.(Tech.), who is to Stockport.—Mersey Hotel, Mersey Square, take up his duties shortly. 7.30 p.m. Association of Supervising Electrical There has been increased activity on the Engineers (Manchester Branch). Branch educational and technical side. The Branch business. Papers Competition is to be suspended at the end of the 1945-46 period when the W. E. Wednesday, June 20th.—London.—Waldorf Highfield Shield Competition will be re Hotel, 1 p.m. Fan and Allied Manufacturers’ instituted. Many members have served as Association. Luncheon, followed (at 2.15 p.m.) Association representatives on various bodies, by annual general meeting. such as committees of the l.E.E. and B.S.I. and London.—At Institution of Mechanical En on Ministry of Works Codes of Practice Com gineers, 6 p.m. Institution of Heating and mittees. Ventilating Engineers. Summer special meet At the recent annual conference the following ing. Paper on “ Fuel Saving by Thermostatic were elected to fill vacancies on the Executive Control,” by A. L. Longworth. Council:—Messrs. J. F. Bridge, J. Flood, G. H. Thursday, June 21st.—P lym outh.—Grand Parker, W. T. Partington and J. J. Smith. Hotel, The Hoe, 3 p.m. l.E.E. Devon and Cornwall Sub-Centre. “ Survey of the Problems of Post-War Television,” by B. J. The E.l.B.A. Edwards. Saturday, June 23rd.—B ath.—l.E.E. Western HE annual general meeting of the Electrical Centre. Summer outing to the engine factory T Industries Benevolent Association will be of the Bristol Aeroplane Co., Ltd., where the held at 2 Savoy Hill, Strand, W.C.2, on June 29th. annual general meeting of the Centre will be The annual report shows that, in spite of the held at 12.35 p.m. Lunch will be served at difficulties of the times and the many wartime 1 p.m. and conducted tours will commence at tasks which E.l.B.A. has had to shoulder, it 2.30 p.m. has not only completed its work but is adequately prepared for the changing problems of the years Friday, June 29th.—London.—Room 19, to come. Livingstone House, Broadway, Westminster, All those who, during the present war, have 6.30 p.m. E.P.E.A. Southern Divisional Meter held office as president of the Electrical In Engineers’ Group. Paper on “ Some Experi dustries Benevolent Association have combined ences in Servicing AC Meters.” to suggest to the electrical industry that it would be fitting for all individuals and all electrical concerns to make a thank-offering gift in com National Safety Congress memoration of victory in Europe, and that this r|'H E first National Safety Congress to be held gift should be made to the Electrical Industries for six years has been arranged by the Royal Benevolent Association which gives so com Society for the Prevention of Accidents, Ter prehensive and humanitarian a service. The minal House, 52, Grosvenor Gardens, S.W.l; signatories are Messrs. P. V. Hunter, E. E. it is to be held in London from June 18th to Hoadley and J. N. Stephens. The appeal has 24th. The first four days will be occupied by been issued to all with whom E.l.B.A. is in road safety sessions and on the 21st the annual contact but it is hoped that many more when general meeting will take place, with a dinner they know of it, will spontaneously contribute at the Savoy Hotel in the evening. On the in recognition of the fact that even if they have following day there will be addresses and dis never helped the Association before it is most cussions on “ Post-war Trends in Industrial fitting that they should start now. Contribu Accident Prevention,” “ Group Activities,” tions should be sent to the Secretary, 32, Old u- Guarding of Horizontal Milling Burlington Street, London, W.l, from whom Machines, and “ Purposeful Physical Training copies of the appeal can be obtained. in Industry.” On the afternoon of June 23rd Reference was made at a recent meeting of the there will be a discussion on “ The Influence of General Purposes Committee of the Electrical 1 raining on Accident Prevention.” The Indus Power Engineers’ Association to the assistance trial Safety Officers’ Section will hold its first afforded to E.P.E.A. members in certain cases annual general meeting in the morning and a by the Electrical Industries Benevolent Associa re-union dinner in the evening. On Sunday the tion. In recognition of this it was decided to 25th, there will be a “ Brains Trust ” session June 15, 1945 E l e c t r ic a l R e v ie w 8 6 7 PERSONAL and SOCIAL News of Men and Women of the Industry ■ AST week we reported the appointment of minated by the cessation of transmissions from Mr. H. Warren as managing director of the Alexandra Palace. During the war Mr. Godfrey British Thomson-Houston Co., Ltd. Mr. has been with Ultra Electric, Ltd., engaged on Warren, who is fifty-three, has been with the administrative duties. company since 1911, having joined its testing Mr. I. R. Cox has been appointed managing department upon leav director of the Metropolitan-Vickers Electrical ing Bristol University of Co., Ltd. which he holds the M.Sc. degree. He was Sir Peirson Frank, chief engineer of the appointed to the engin London County Council, has been elected eering staff in 1913 and president of the Institution of Civil Engineers in 1921 became “ en for 1945-46. Before going to London, Sir gineer of insulations.” Peirson Frank was city engineer of Liverpool. In 1923 he collaborated Sir Frank Smith has been elected president of with the late Mr. R. C. the Institute of Physics for 1945-46, with Prof. Clinker in the establish A. M. Tyndall as vice-president. ment of the B.T.H. Mr. G. W. Parker, borough electrical engineer Research Laboratory; in 1938 he was elected of Grimsby, who is due to retire next month, to the board of the has agreed to stay on until his successor has company with the title been appointed. Mr. H. W arren of director of research Mr. R. C. Golding, M.Sc.(Eng.), A.M.I.E.E., and recently he became A.M.I.Mech.E., deputy borough electrical en director of research and engineering. gineer and manager, Great Yarmouth, has been Coupled with his research and engineering appointed to succeed Mr. B. T. Hawkins who is responsibilities, Mr. Warren has been in charge retiring on July 31st next from the position of of the company’s technical education and train borough electrical engineer and manager of ing scheme. He contributed a detailed descrip Wallasey, which he has held for the past twenty- tion of this scheme to our series “ Engineers of four years. the Future” (Electrical Review, March 31st, Mr. Golding received his technical training 1944). He is a member of the E.R.A. Council at the Rugby College of Technology and Arts and of several B.E.A.M.A. and B.S.I. com and was apprenticed to the British Thomson- mittees. He was president of the Rugby En Houston Co., Ltd. gineering Society in 1936-37 and is a vice- Thereafter he held president of the Coventry Engineering Society, appointments with the the Institute of the Plastics Industry and the Leicestershire and War Midland Centre of the Institute of Physics. He wickshire Electric Power has travelled widely on the Continent and in Co. (senior mains assis America and has written many technical books tant at the Kibworth and papers. office), N orth Wales During the war Mr. Warren has directed a Power Co. (technical great deal of special research, development and assistant in charge of engineering work, especially in radio, radio mains at the Caer location and aircraft, carried out by the com narvon office) and Cen pany for the Government. He is a member of tral Electricity Board the Radio Research Board. (in the operation department). In 1939 Engineer Rear-Admiral D. J. Hoare, at he joined the West present Superintendent of the Admiralty Bromwich Electricity M r. R. C. Golding Engineering Laboratory, has with the consent Department as mains of the Admiralty, been appointed Director of engineer and in 1941 he was appointed to his Research of the British Internal Combustion present position at Great Yarmouth. Mr. Engine Research Association whose head Golding has visited the United States and the quarters are at 111-112, Buckingham Avenue, Continent on several occasions to study electrical Slough. Admiral Hoare is expected to take progress. He has contributed a number of up his duties with the Association on July 23rd. articles to the Electrical Review, the most Mr. H. J. Smith who received the British recent (January 19th, 1945) dealing with the Empire Medal at an investiture in May for his application of scientific management to elec work at Woolwich Arsenal, is the father of Mr. tricity undertakings. Leslie Smith, M.I.E.E., chief designer to the There was criticism at the Oldham Town British Electric Transformer Co., Ltd. Council last week of a minute of the Electricity Mr. G. W. Godfrey, who has just taken up Committee which recorded the decision to pay duties with E. K. Cole, Ltd., as radio sales Mr. E. Binns, chief electrical engineer and manager, has been in the radio trade since 1923, manager, a salary of £1,500, rising by annual when he joined the Sterling Telephone Co. He increments of £100 to the maximum in accord was later associated with Marconiphone, the ance with the scale based on the kWh assess Gramophone Co., and E.M.I., devoting much ment of the undertaking. It was objected that energy to the development of television. An the salary ought not to be based on the output appointment with Baird Television was ter of the Department. The chairman of the 8 6 8 E l e c t r ic a l R e v ie w June 15, 1945 Electricity Committee said on the present appointed borough electrical engineer and output the salary would be £1,840. For twenty- manager of Congleton. five years the wages of employees, apart from Mr. Bond, who is forty-three, is a native ot chief officials, had been based on the kWh sold. Morecambe. He was educated at the Friends If the sales of electricity decreased wages were School, Lancaster, and received his technical reduced. training at the Storey On the completion of forty-five years’ service Institute Technical in the telegraph industry, Lord Pender has College, Lancaster; with retired from active participation in the Cable Mr. W. H. Inman, and Wireless group of companies. The Hon. electrical engineer; and Jocelyn Denison-Pender, his son, has been with the Caton Engin appointed to a seat on the boards of all the eering Co., Ltd. From companies within the group and’joint managing 1923-26 he acted as director of the operating company, Cable & assistant engineer to Mr. Wireless, Ltd. W. H. Inman and from then until 1929 he served Lord Inverforth, president of Cable & Wireless as junior engineer to (Holding), Ltd., since 1929, has been appointed the Lancaster Corpora- president of all the associated companies. ion. He then went to Sir Edward Wilshaw, chairman of Cable & Newport (Mon.) Cor Wireless, Ltd., has been appointed governor poration as junior as and managing director of Cable & Wireless sistant engineer until M r. R. Bond (Holding), "Ltd., and chairman and managing becoming chief assistant director of its associated companies. Lieut.-Col. engineer, consumers’ department, Swintbn and I. Fraser, press consultant to Cable & Wireless Pendlebury Electricity Department, three years has been elected a director of the company and later. Mr. Bond went to Stafford as consumers’ its associated concerns. engineer in 1937. Mr. T. J. Stewart, late of the British Thomson- Mr. Christopher Rathbone, A.M.I.E.E., Houston Co., Ltd., has been appointed technical A.M.I.Mech.E., has been appointed deputy representative for “ Stanelco ” products in the electrical engineer, to the Stalybridge, Hyde, Birmingham area. His address is Temple Mossley and Dukinfield Electricity Board. Courts, Temple Row, Birmingham, 3. Mr. R. Shepherd, M.I.Mech.E., who has for Mr. A. E. Jepson, whose retirement from the the past thirteen years been associated with General Electric Co., Ltd., was reported in our Joseph Lucas, Ltd., as research and develop last issue, joined the company in 1900 as tester ment engineer, has now established himself as of electric heating ap a consulting engineer to the plastics and allied paratus at the Peel industries at 21, Broad Oaks Road, Solihull, Works, Salford, having near Birmingham. previously served an apprenticeship with S. Mr. G. R. Schou, A.M.I.E.E., has relinquished H. Heywood,his appointmentelectrical with the Central (Technical engineers, Manchester. and Scientific) Register, Ministry of Labour Later he became an and National Service, to return to the Willesden assistant substation Technical College. attendant with the Man Mr. Alex. Milne, senior, informs us that his chester Electricity De son, Mr. Alex. Milne, junior, who is now in the partment and after a Forces, has become a partner in the firm of period as an assistant Alexander Milne & Co., the style of which has demonstrator in the been altered to Alexander Milne & Son. electrical department of the Manchester College Miss Caroline Haslett is shortly leaving for * C ior.es,„ of Technology rejoined the Middle East at the request of the Central the Corporation as chief Council for Education in H.M. Forces. She assistant in the testing department. will give talks on housing, electricity, careers and Mr. Jepson returned to the G.E.C. in 1910 to resettlement. develop meter sales and in 1919 was appointed Sir Archibald McKinstry, former managing manager of the "Sheffield branch, a position director of Babcock & Wilcox, Ltd., was pre which he held until 1929 when he became sented with the freedom of the burgh of Renfrew assistant district manager, Lancashire and York last Friday. shire. In 1936 he went to the head office as Appointments Vacant.—In this issue Battersea manager of the switchgear and instrument Borough Council is advertising for a general department, a post which he held upon his manager and engineer for its electricity under retirement. He is a member of the I.E.E. and taking (£1,675); Bacup Corporation for a has taken an active part in the Institution’s borough electrical engineer (£600 and bonus); affairs. and Malvern U.D.C. for a chief electrical Alderman Fred R. Unwin, manager of the engineer The Senate of the University Irish district of the General Electric Co., Ltd., London is inviting applications for the Chair has been appointed to succeed Mr. A. E. oi Electrical Engineering tenable at King's Jepson as manager in London of the switchgear College (£1,150). and instrument department. Mr. George H. Moir becomes manager of the G.E.C. in Obituary Northern Ireland. Mr. L. R. A. Le Bouvier, a director of the Mr. Richard Bond, A.M.I.E.E., consumers’ Jerusalem Electric & Public Service Cpn., Ltd engineer, Stafford Corporation, has been has died suddenly in Jerusalem. June 15, 1945 E i.f c t r ic a l R e v if w 8 6 9 At' Vectors Sinusoidally Varying Quantities HE simplest kind of vector By G. W. Stubbings, shape, and that, moreover, the T in applied m athem atics e.Sc., > m .i .e .e . RMS value of this resultant is a directed step, and, in will not be \/2 times the RMS general, a vector quantity can be defined as value of the components, as it should be one which has a directive property in addition according to the vector method of adding to magnitude. Vectors of the same kind are currents. Again, if the active and reactive combined by the classic parellelogram of components, IA and Ir, of the no-load forces rule. In contradistinction to vectors current of a transformer are measured having the directive property whereby 2 + 2 objectively, the sum of the squares of these is not generally equal to 4, scalar quantities components is less than the value of the are devoid of any kind of direction and are actual current, because the wave form of this added arithmetically. Alternating quantities current is not sinusoidal. —currents and voltages of the same fre An algebraic equation I2 = IA2 + I r 2 + IH2 quency—can, by a most useful mathematical can be written which looks as if the total fiction, be treated as vector quantities, current represented by I is a vector quantity subject to the condition that their variation which is the resultant of three components in time is sinusoidal. This treatment is the mutually perpendicular in space, the third foundation of the technique for the solution component IH depending upon the harmonics. of elementary circuit problems. But, whereas the sinusoidal active and re active components of the no-load currents of Active and Reactive Components two transformers in parallel would add The fact that alternating quantities can be arithmetically to give the active and reactive treated as vectors leads to the idea of the components in the whole current entering the resolution of an alternating current into two parallel combination, this would not components in phase quadrature, the one, necessarily apply to the harmonic com active, in phase with the voltage producing it ponents, for two harmonic components can and the other, reactive, in quadrature with this lie combined arithmetically only if their voltage. The active component carries the harmonics of similar frequency are all in whole of the power arising from the associa phase. This equation is therefore merely a tion of the whole current with the voltage. barren piece of algebraic symbolism and has The question is sometimes asked : Do these no vector significance. active and reactive components flow simul taneously in the circuit or are they merely Resistance, Reactance and Impedance mathematical fictions ? In two parallel The quantities resistance, reactance and circuits, the one purely resistive and the other impedance often appear in circuit calculations purely reactive, the two component currents as if they were vector quantities. The appear separately in the two branches so that resistance of a circuit depends upon its the resultant current entering the combination geometrical and material properties and is is the effect of their superposition. inherently devoid of any directional character In a series circuit containing resistance and istic. So is reactance, which is a magnitude reactance, the objective reality of the two compounded of a circuit property and the component currents is not so easily assented essentially scalar quantity, frequency. What to. It seems certain, however, that whatever is commonly represented as the vector of an may be the nature of the circuit in which it impedance is really the vector of the voltage flows, an alternating current of 2 A lagging drop in it with a sinusoidally varying current 60 deg. on the voltage is equivalent to the of 1 A flowing through it, and the directional superposition of an active current of 1 A and characteristic of the impedance vector is a reactive current of V3 A in just as real simply that of the voltage drop relative to the a sense as a direct current of 2 A is the current. equivalent to the superposition of two com Thus, in series-circuit calculations voltage ponent currents each of 1 A. drops are added as vectors to obtain a re The vector method of solving AC problems sultant drop which characterises a combined is so familiar to practical engineers that there impedance. Similarly, current vectors are is a tendency to overlook the fact that this combined to obtain the resultant admittance method is legitimate only if all the alternating in a parallel circuit calculation. As the quantities concerned vary sinusoidally. It is voltage drop in a pure reactance leads the easy to deduce, for instance, that two equal current by 90 deg., an inductive impedance is alternating currents of triangular wave form a leading vector, and, hence, the algebraic a quarter cycle out of phase will, if superposed, expression for a pure reactance of x ohms produce a resultant of quite a different wave is jx, where j is the unit leading vector. An 8 7 0 E l e c t r ic a l R e v ie w June 15, 1945 impedance has this vector significance only where cos It contains a specification and illustrations of the joint secretaries to the Council, Mr. T. an interlocked fixed guard for use with such Bowyer Jackson, 32/34, Ruskin Chambers, presses, and recommends that certain other Corporation Street, Birmingham, 4, and Mr. devices should be provided for ensuring the G. Beardsworth, 122, Wilmslow Road, Fallow- safety of the workers. It also recommends field, Manchester, 4. that a system of examination and upkeep of bending brakes should be devised in each Increase for Wallasey Contractors factory. Wallasey Corporation Electricity Committee B.E.A.M.A. and the B.I.F. has agreed to a 25 per cent, increase in payments to local registered electrical contractors for Support for the view that the next British wiring cookers, wash boilers and water heaters. Industries Fair should be held in 1947 comes from B.E.A.M.A. It is thought that there Electrical Factory for Berwick would be great difficulty in arranging adequate tifcj; accommodation, entertainment and travelling Plans are under consideration for the establish tens 5 facilities for the buyers who may be expected ment of a factory at Berwick for the making of from overseas. The Association favours a electrical appliances. The factory, to be new venue for the “ ex-London ” portion erected by a new company under the style of the II of the Fair—much nearer London than Bir Berwick Engineering Co., Ltd., will employ mingham—and at least the domestic appliances about a hundred workmen most of whom will be • Hsu exhibition should be held in London. recruited locally. «fa It was announced in the House of Commons 'ifel; last week that plans were proceeding for the Workmen’s Compensation holding of a Fair in 1947. «1 to: Although it will not be possible to pass the iprejci Fuel and Power Industrial Injuries Insurance Bill before Parlia ye to i ment is dissolved to-day the Government .Doia: In last week’s leading article on this subject decided to publish the text this week. The Bill Mr. L': it was stated that “ some idea of the com was intended to raise the rates of compensation »88® paratively higher degree of co-ordination in the and for total disablement these were fixed at itioati* electricity supply industry may be gained from 60s. per week (against 40s. at present) for a psa? the fact that while there are 345 authorised single person; 76s. for a single person with an adult dependant or a married man (against iey m electricity undertakings, the number of gasworks is treble this (1,049).” The figure 345 is the 40s. and 50s. respectively); and 83s. 6d. for a number of generating stations owned by married man with one child (against 55s.). authorised electricity undertakings of which there were 573 in 1944. Dearer Non-ferrous Metals The Control of Non-Ferrous Metals (No. 17) Annual Holidays (Copper, Lead, and Zinc) Order, 1945 (S.R. & O. isdfc The Telegraph Construction & Maintenance 1945, No. 642) increases the maximum prices Co., Ltd., and Submarine Cables, Ltd., are for lead by £5 a ton, for zinc, zinc sheets and son a: closing their Greenwich and Farnborough works rolled zinc (boiler plates) by £5 10s. a ton, and : of N v for annual holidays from July 21st to July 30th. for zinc oxides by £4 15s. a ton. This is the A skeleton staff will deal with urgent require first increase in the prices of unwrought lead and Ik Is ments. zinc since December, 1939. The Order also jnunis Stamford Electrical, Ltd., will be closing their abolishes the maximum prices for hard spelter, of b Park Works from August 4th to 11th. zinc dress, flux skimmings and certain descrip *s:l® All employees of United Ebonite & Lorival, tions of copper scrap, brass scrap and swarf, Ltd., are to get an extra week’s holiday with and gunmetal scrap and swarf. The Minister ■mi pay in addition to their 1945 summer holiday. of Supply has also issued a list of prices of non- OiS is - In making this announcement the directors and ferrous scrap metals at which he is prepared to ' pe management of the company have conveyed effect a sale to a buyer subject to having sufficient ccidcQ. to the workpeople their appreciation of the material of that particular quality available at a esses. Fs contribution which all have made to the war convenient depot at any particular time. a« effort. I ofe. Trade Announcement Retail Staff Wages [Mil? Wall & Attwood, Ltd., are returning to ii S- The National Joint Industrial Council for the Portsmouth on June 25th to offices at 157-159 m ilt Retail Furnishing and Allied Trades (in New Road (telephone: Portsmouth 2031). ih rep.' cluding electrical and radio goods) has decided Since the early part of the war when their safifi to increase the minimum weekly rates of premises were totally destroyed by enemy pi®: remuneration as follows :—Branch managers action they have had offices at Havant. Hit# and manageresses ; Up to £100 weekly trade, 3s. per week; over £100 weekly trade, 4s. per Changes of.Name hob ■ week. All other male and female employees ScoliS of sixteen years of age and over, 3s. per week. Recent changes of name include the follow s*i A minimum rate has also been fixed for male ing ;—Newport Electrical Co., Ltd. to Winter ■rsi* and female employees of fifteen years of age. (Newport), Ltd.; Meissner Coils (R.A.P.), Ltd., mi: The new minimum weekly rates of remuneration to Meissner Coils (G.B.), Ltd.; Miller Sign Co., lelitf operate from the first pay day after June 11th. Ltd., to Miller Electric Co., Ltd.; Frank Curtis linltw Wages must not be paid at less than the rates (Electrical Engineers), Ltd., to Electrical En specified except in special circumstances pre gineering Construction Co., Ltd.; and Accumu ;t] of: scribed in the joint agreement. Copies of the lator Contracting Co., Ltd., to Accumulator & brake full agreement may be obtained from either of Contracting Co., Ltd. 874 E l e c t r i c a l R e v ie w June 15, 1945 iiews on the Slews Reflections on Current Topics MLL over the country the battle between pointed out that Torquay would give a supply im . electricity and gas for the possession of if someone paid the cost, whereupon another temporary houses continues. The latest member said that a shopkeeper did not ask dispatch comes from Mr. A. W. Barham, others to pay for his shop. Ignoring the borough electrical engineer of Watford, who inaptness of the comparison, I seem to have teffs me that his chairman (Alderman H. bought (or paid for) several shops during Coates) has prevailed upon the Borough the past few years. Council to reverse a previous decision that of * * . * 100 tem porary houses 63 should have gas When told that, even after designs have cookers, washboilers and refrigerators and been decided on, it takes at least a year to 37 electrical appliances. Now there will be put a new electric cooker on the market, 63 all-electric houses, but it is a pity that one is rather inclined to think it is an un Alderman Coates was not persuasive enough necessarily long time. The wisdom of to score 100 per cent. manufacturers not rushing too quickly into * * * the production of their post-war apparatus At Preston the chairman of the Electricity was brought home to me forcibly a few days Committee (Alderman H. E. Rhodes) was ago when I visited a small canteen where for not so successful. The Housing Committee the past few months the prototype of a new had recommended that half of the town’s cooker made by a well-known manufacturer temporary houses should be electrically has been tried out under actual working equipped while the other half had gas. conditions. Exhaustive tests by a com Alderman Rhodes moved an amendment petent cook have revealed a number of that all should be served by electricity where defects. The lowest loading of the hot-plate it could be installed, but the Council accepted is found to be too high for simmering and the original proposal. the oven lagging is faulty. The cook also Llandudno proved very gas-minded when considers that, although the thermostat the equipment of temporary houses came up operates satisfactorily, indication of the for discussion. Only two members could actual temperature inside the oven should be be found to support a motion by Councillor provided by means of a thermometer. It F. F. Dicken that the fifty bungalows should does seem that a little extra time and genuine be all-electric, and gas prevailed. The sad effort spent in studying the reactions of feature of the debate was an admission by users is well worth while rather than running Councillor Dicken that he had gas cooking the risk of encountering complaints and in his own house and a statement by one of difficulties later on. Re-tooling is an the gas enthusiasts that he knew an electrical expensive business. engineer of a large borough who had installed * * * a gas refrigerator. Precept and practice In an article on “ Practical Electronic should go hand in hand. Controls ” in the American journal * * * Electronics, Paul G. Weiller says:—“ No It is generally company electricity supply doubt the employment of an electronic link undertakings who are said to stand in the adds to the sales appeal of a product. This way of rural electrification by quoting is due to the blaze of publicity which elec iniquitous prices for extension of their tronics has received and because of the great services. Maybe that is because, speaking assistance it has been to the war effort. generally, the companies happen to be Unfortunately electronics has been over responsible for supply in the greater propor publicised. Any appreciable number of tion of the rural areas. In most cases, of electronic fakes, involuntary or deliberate, course, their high quotations are fully -would discredit industrial electronics for a justified; the alternative is to supply at a long time. To market an electronic device severe loss or pass the burden on to their which is no better and does no more than other consumers. • But local authorities are its mechanical or electrical competitor of apt to adopt a similar attitude when faced olden days would also result in discredit to with requests for unremunerafive extensions. industry even if the use of vacuum tubes in I see that a case of this kind has cropped up the device gives it enhanced sales appeal.” in Devon. Indignation was expressed at a A note on the author says that Dr. Weiller is meeting of the Newton Abbot R.D.C. at a widely known consultant specialising in elec the failure of the Torquay Electricity Com tronic equipment design who has had many mittee to give a supply to Langstone, as an years of experience both in the laboratory extension would cost £1,500. One member and in the field.—REFLECTOR. June 15. 1945 E l e c t r ic a l R e v ie w Callender's Activities W artime Achievements : Merger with B.I. Cables A N account of the company's contribution They claimed that their technicians were _ to the winning of the war forms the first the first to succeed in developing and pro half of the statement by the chairman of ducing satisfactory field cables for the Army Callender's Cable and Construction Co., containing no natural rubber. The demands Ltd. (Sir Malcolm Fraser. Bt.) circulated to of radar and other high-frequency com stockholders in advance of to-day's annual munication equipment called for cables meeting. The statement mentions that the capable of withstanding frequencies of thousands of millions of cy cles per second. These frequencies would hav e reduced the ordinary rubber cable to a mass of liquid in a few seconds. The I.C.I. dev eloped poly thene, a material Four armouring machines engaged in reinforcing “ Hais” cable with steel tapes and wire arm our of remarkable electrical proper ties. but its successful processing • and application required an effort of no mean order in w hich the company was able to take the lead. Another development had been the production for the profit for the past year was £503.185. against Central Electricity Board of a three-core gas £465.115 for 1943. The ordinary' dividend is pressure cable operating at 132-kV and maintained at 20 per cent, by a final dividend capable of transmitting the entire output of 10 per cent, and a cash bonus of 5 per cent., of a large generating station. Callender's and £175,000 is transferred to dividend also participated in the production of the equalisation reserve. Proceeding to deal with wartime develop ments. the chairman says that soon after the appearance of the magnetic mine, the company* offered a cable invented by the Three 30»naucical mile lengths of “ Hais ” cable being coiled down in a special building with openings in the roof. From these positions the cables were pulled by winches along an overhead gantry for loading into the cable layer chief engineer (Mr. P. V. Hunter) SB**5" for exploding the mine. This was able to carry currents up to 3,000 A. and to float in sea water while being strong enough to be towed at speeds up to 20 knots. Three weeks later on Januarv 18th. 1940. the first complete cable, with all electrodes and armoured lead pipes laid across the Channel accessories, was delivered to the Admiralty for the supply of oil to the Allied armies on and within a year equipment for 366 vessels the Continent. was supplied by Callender's alone, in addition Turning to the amalgamation of to some hundreds more by other cable Callender's and British Insulated Cables. Ltd.. makers. Sir Malcolm Fraser outlines the steps leading 876 E l e c t r i c a l R e v ie w June 15, 1945 up to this which arose out of the co-operation tion of their overseas sales and technical of the two companies in a number of direc forces should increase substantially the tions. He says that the amalgamation should volume of post-war export sales. They strengthen the security of the preference should be able to obtain large electrification stockholders. The tangible assets of the and power transmission contracts throughout new company (British Insulated Callender’s British and foreign countries by means of Cables, Ltd.), whose issued capital will be their combined financial and technical £11,219,175, amount to over seven times the resources. nominal value of its two classes of preference The statement concludes with a review of stock. the position of Callender’s Trust (which In a normal pre-war year the sales of the holds the Callender investment assets) under two companies were divided into 82'7 per the amalgamation scheme and the chairman cent, home sales and 17-3 per cent, overseas says that the income of the ordinary Callender sales. In the post-war period the home sales stockholder should in the future be at least are likely to exceed pre-war demands and equal to what he would have received if there will be greater difficulties in fulfilling Callender’s had remained a separate entity. orders than obtaining them. What the The interests of shareholders, staff, work margin of profit will be cannot at present be people, customers and the public alike have forecast. been jealously watched and maintained Their expert advisers express the opinion throughout and the board has no hesitation that the combination of the companies’ in recommending the scheme to the stock export departments and the wider distribu holders’ favourable consideration. Export Licensing* Relaxed Many Electrical Items Freed HE Board of Trade has made the Export of echo sounders, flat irons, electric furnaces, T Goods (Control) (No. 4) Order, 1945 (S.R. fuses, gramophones, radio-gramophones, record & O. 1945 No. 576, Stationery Office, price 6d.). players and parts, hair curling, waving and This Order, which came into effect on June 11th, drying appliances, and parts, wholly or mainly cancels all previous Export Control Orders and of metal, lightning conductors, loudspeakers, sets out the export licensing position as at microphones, motors, motor convertors, fre June 11th. It reduces substantially the list of quency changers, generators, generating sets, goods requiring export licences and removes rotary convertors and rotary transformers, all the remaining countries from the list of overhead line accessories, permanent magnets territories to which the export of all goods is and electromagnets, resistances, including heat controlled by export licensing, so that in future ing elements, searchlights and parts, switch only goods appearing in the First Schedule to boards and pillars, and fuseboards and pillars the Order will require export licences. Among (including distribution boards and pillars), the classes affected are the following which switches and circuit-breakers, static transformers appear in the First Schedule to the Export of and transformer tanks, wireless receiving sets Goods (Control) (No. 10) Order, 1943, as and chassis, wiring accessories and fittings, amended. In some cases parts of items only wholly or mainly of metal, of a kind commonly have been deleted from the list of controlled used for domestic purposes, X-ray apparatus goods and exporters are advised to consult the and parts. Order itself to ascertain the exact position as As regards domestic cooking and heating regards goods with which they are concerned. appliances the following are still subject to The items which have been completely deleted export licence:—Boiling and heating plates, from the Schedule include the following:— combined cooker-heaters, cookers and parts, Group 6 (4): Vacuum cleaners (non-domestic), and grill-boilers and parts. Domestic wash- domestic washing machines, mangles and boilers and accumulators, and plates and grids wringers, welding electrodes, wire and cable for lead acid accumulators remain subject to insulating and covering machinery, wire control. drawing machinery and wire-rope and cable- This notice refers to export licensing require making machinery. ments under the Export of Goods (Control) Deletions from Group 12 (2) includeV oltaic (No. 4) Order, 1945, only and does not affect cells and zinc electrodes, apparatus and any other regulations which may be in force appliances of a kind used for domestic purposes, governing the manufacture, acquisition, disposal, and parts thereof, wholly or mainly of metal, etc., of goods, including those for export. bells, buzzers and indicators, and parts, mainly of metal, electrically-heated blankets, com Consolidation Order presses and pads, busbars and busbar chambers, In this connection attention is called to the ceramic components made wholly or mainly of Machinery, Plant and Appliances (Consolida soapstone, steatite or titanium di-oxide, control, tion) Order, 1945 (S.R. & O. 1945 No. 631, regulating and starting gear for electric motors, Stationery Office, 2d.), which also came into generators, rotary convertors, rotary trans force on June 11th. formers, frequency changers, motor convertors, Hitherto many classes of machinery and plant electromagnets and electric furnaces, cores have been licensable under the Machinery, consisting wholly or mainly of iron powder, Plant and Appliances Orders, when supplied to June 15, 1945 E l e c t r i c a l R e v ie w 877 the home market and under the Export Control cases in which export licences have already Orders when supplied for export. The main been granted prior to June 11th. effect of the new Order, together with certain The classes in the Machinery Licensing changes made by the Export of Goods (Control) Schedule which are still covered wholly or in (No. 4) Order is to bring the bulk of the con part by the Export Control List include:— trolled classes of machinery and plant under a Apparatus for cinematograph projection, etc., single licensing procedure. While most of the electrical machinery, etc., accumulators, etc., controlled classes will thus be subject to conveyors, etc., industrial trucks, etc., and machinery licensing only, a few classes will automatic private telephone exchange systems, remain subject to export licence. When an etc. In addition the Export Control List still export licence is granted in these cases no includes such ancillary equipment as pumps and further machinery licence will be required. compressors, i.e. engines, and steam engines Nor will machinery licences be needed in those and turbines. ELECTRICITY SUPPLY Supplies for New Houses. Price Increase Proposals. Accrington.—T e n a n t s t o C h o o s e .—The missioners for permission to withdraw the 5 Town Council has decided to provide gas and per cent, discount which has been allowed to electricity services in all the new houses for consumers since 1942. The recent increase in cooking and washing purposes, appliances to be the price of coal will involve the Electricity supplied according to the wishes of tenants. Department in an additional outlay of £38,000 per annum, and discontinuance of the discount Bangor (North Wales).— E l e c t r ic it y f o r will mean an extra income of £30,000. N e w H o u s e s .—After an animated discussion the Council last week decided to install electricity East Barnet.—H o u s in g S e r v ic e s .—At the instead of gas in the 50 new houses which it is monthly meeting of the Urban District Council, erecting. The women members of the Council the surveyor reported upon discussions that had declared that it was for women to decide which taken place with the Northmet Power Co. and was the better method of cooking and they the Barnet District Gas & Water Co. with pointed out that women in the Services had regard to cables and mains to be laid in con favoured electricity. nection with the new housing scheme. In the case of the electricity cables the Northmet Co. Barrow-in-Furness.—L o a n s .—The Electricity had agreed to provide all necessary cables free Committee has obtained sanction to borrow of charge, and, in the case of the gas mains, £5,000 for mains and services in connection with the Gas & Water Co. offered to provide mains the change-over and £3,500 for meters. free of charge if at least fifty per cent, of the Birkenhead.—S u p p l y t o T e m p o r a r y H o u s e s . houses or flats were fitted with gas cookers and —The Corporation Electricity Committee has gas wash-boilers. The report was approved. obtained sanction to borrow £3,500 for mains to Glasgow.—T r a c t io n S u p p l y P l a n t .—To meet temporary houses and is seeking sanction to the electricity requirements of the Transport borrow £1,500 for substation equipment and Department during the next five years, the £2,000 for consumers’ apparatus. Corporation will probably require one new Blackburn.—E l e c t r ic it y f o r F a r m s .—The 25,000-kW turbo-alternator and one 75,000 lb. electrical engineer (Mr. R. H. Harral) has water-tube boiler at the Pinkston generating prepared a scheme to provide electricity for station. farms, etc., on Woodfold Park estate, costing Holmfirth.—H ig h e r C h a r g e s .—At its May £4.322. meeting the Council decided to apply to the Bournemouth.—E l e c t r ic H e a t in g o f H o s p i Electricity Commissioners for permission to t a l .— Estimates for electric heating to replace make all-round increases in the charges for coal grates at the isolation hospital are being electricity. called for by the Corporation Health Committee. The proposals include raising the present war increase of 5 per cent, on all-in tariffs for Burnley.—S u b s t a t io n E q u ip m e n t .—The Elec tricity Department proposes to spend £3,310 domestic and non-domestic consumers to 17J surplus from revenue to meet outlay on' sub per cent, and the 2 i per cent, increase for power station equipment during the autumn. and special users to 5 per cent. Councillor R. L. Robinson, chairman of the Electricity Cardiff.—S w it c h e s f o r R a d io S e t s .—The Committee, said that the proposed increases Works Committee has asked the city engineer to would give the undertaking an estimated profit confer with the electrical engineer regarding a of £278. If the all-in tariff increase was fixed at, suggestion that separate switches for use in say, 10 per cent., there would be a loss of £400. connection with radio sets should be included The increases were the result of the higher cost in the specification for electrical installations in of coal. An amendment that -the tariff's for new houses. domestic users should be referred back for Coventry.—P o w e r S t a t io n A l t e r a t io n s .— further consideration was defeated. Sanction is being sought by the Corporation Hull.—L o a n S a n c t io n e d .—The Corporation Electricity Committee to borrow £3,256 for Electricity Committee has obtained sanction to modifications to the circulating water discharge borrow £1,923 in connection with an additional pipework at Longford power station. supply for John M. Harrison & Co., Ltd. Derby.—W ithdraw al o f D is c o u n t .—Appli E l e c t r ic it y C h a r g e s .—The Minister of Fuel cation is being made to the Electricity Com- and Power has informed the Electricity Com 878 E l e c t r i c a l R e v ie w June 15, 1945 mission that he knows of no reason to intervene is made that the company might consider the in the Council’s proposal to adjust the actual inclusion of a “ rise and fall ’ clause in the kWh charge on all tariffs where coal clauses agreement. are not in operation, to a minimum of 0-5d. Rotherham.—P r o p o s e d I n c r e a s e d C h a r g e s . Keighley.—P r o p o s e d P r ic e I n c r e a s e .—In —To meet an increase of £55,000 in the annual view of increased coal prices and other expenses fuel costs of the electricity undertaking, the the Electricity Committee recommends that the borough electrical engineer, Mr. W. H. Duffett, existing basic charges to power consumers is seeking permission to adjust the price of shall be increased by 5 per cent., and all other electricity to power users not subject to coal charges by 10 per cent. clauses. London.—C a b l e -L a y in g b y P l o u g h .—The Sedgley.—S u p p l y t o H o u s in g E s t a t e .—The County of London Electric Supply Co., Ltd., Midland Electric Corporation is to extend mains is providing' electricity services to some 80 and provide a substation in connection with the temporary houses at Clarence Avenue, Streat- supply to the U.D.C. housing estate. ham, to the order of the Ministry of Works. Swindon.— S u p p l y t o E s t a t e s .— The Elec To ensure that the supply is available as early tricity Committee is to provide a supply to the as possible, the cables are being laid by a Pinehurst and Beech estates at a cost of £8,500. cable-laying plough provided by the Lower Thames Land Development & Construction Overseas Co., Ltd. Work was commenced at Clarence Avenue on June 7th and is expected to be Australia.—N e W P o w e r S t a t io n .—The New finished by the end of the week. By hand South Wales Government has passed a Bill digging methods this work, which involves some which authorises the erection of a hydro-electric 800 yards of cable laying, would take approxi power station at the Wyangala dam on the mately a fortnight to complete. The method Lachlan River. According to Tenders (Mel of laying cables by plough has been extensively bourne) the plant will consist of an English used by the County of London Co. During the Electric 10,100-HP vertical shaft reaction turbine war this method was employed to lay many working under a gross head of 154 ft., the unit miles of cable to aerodromes and Army sites acting as a generator when water is available and in connection with the “ Pluto ” operation. for discharge or as a synchronous condenser when no water is available. A 66-kV line will Nelson.—E l e c t r ic it y in t h e C o t t o n I n link the station with Cowra where connection d u s t r y .— Cotton manufacturers have discussed with Alderman Winterbottom, chairman of the will be made with the southern electricity supply system. It is expected that the station, which is Corporation Electricity Committee, and Mr. estimated to cost £390,000, will be in operation T. D. Martin, the borough electrical engineer, some time next year. It will be constructed to the extended use of electricity in the industry as withstand a flood of 50 ft. above tail water an additional inducement to young people to level, and the design provides for remote opera enter mill employment. tion from a building 400 yd. away. North Wales.—T ransmission C o s t s .—Last week the Welsh Parliamentary Party received a deputation from North Wales and South TRANSPORT Cheshire electricity undertakings who submitted Bolton.—B u s es t o R e p l a c e T r a m s .—The a memorandum showing how, under existing Ministry of War Transport has sanctioned the arrangements, these areas were severely handi acquisition by the Transport Department of capped in the development of industries. This sixty-seven buses to enable it to replace four was attributed to higher electricity charges remaining tram routes by bus services. The owing to transmission costs. Over a period of Transport Committee’s decision!to purchase the years, it was set out, these authorities had sought buses was referred to at a meeting of the Tirwn to remove their present disabilities by representa Council on June 6th. Councillor Hesmondhalgh tions to the Central Electricity Board and the asked that trolley-buses should not be over Electricity Commissioners, but reliefs obtained, looked. The Mayor said that the Committee while welcome, were inadequate to meet their had considered trolley-buses for years and needs. The Party decided that a deputation would favour the system best suited at the time. should seek an early opportunity of discussing At present experts advised against trolley-buses the matter with the Minister of Fuel and Power, until there was an improvement in them. and urge upon him the necessity of a review of the existing conditions. Leeds.—T r a m w a y E x t e n s io n .—Application Oldham.— C o o l in g S c h e m e .—The Electricity is being made for permission to extend the light Committee has received sanction from the railway from Belle Isle Road to Middleton Park Electricity Commissioners to proceed with the Road. erection of a small experimental plant for using West Hartlepool.—-Trolley-bus 1 Operation. effluent from the sewage works for cooling —During the year ended March 31st the Cor purposes at . Chadderton generating station. poration’s trolley-buses carried 8,782,491 The scheme involves the erection of a pumping passengers, an increase of 271,520 on the station and plant. previous year. Receipts amounted to £47,764, Perthshire. — E l e c t r ic it y C h a r g e s . — The an increase of £1,182. Western District Committee of the County Wallsend.—O p p o s it io n t o T r o l l e y -B u s e s .— Council is communicating with the Grampian The Town Council is to oppose a Bill promoted Electricity Company to ascertain whether, if the by Newcastle-on-Tyne City Council, which kWh charge were reduced to a general one of among other things, seeks powers to run trolley id., the districts of West Perthshire which had buses over additional routes into WAUsend. At entered into an agreement on a rate of Jd. would present only one route in Wallsend is covered bv enjoy the reduction. Failing this the suggestion trolley vehicles. June 15, 1945 E l e c t r i c a l R e v ie w 8 7 9 KECEXT IXTltOm t TIOXS Notes on New Electrical and Allied Products Mining Plug and Socket first connecting the leads together and then placing the coil parts on to the iron core when ESIDES being easily assembled, the new a big deflection will prove continuity of the H "H u w o o d ” W 100 PA 1 100-A mining plug windings, joints and leads. The sensitivity of and socket equipment introduced by H i g h the tester may be judged from the fact that W o o d & Co., L t d ., Gateshead-upon-Tyne, noticeable movement of the meter needle is greatly reduces maintenance difficulties. Con produced by one short-circuited turn of No. 40 forming to B.S. 279. the plug is suitable for gauge copper wire. all types of cable used in mining work, a range of clamping arrangements fitting accurately Fuse Box for Street Lighting any ty pe or size of screen or pliable armoured cable between 1 & and 2£ in. outside diameter A weatherproof fuse box for street lighting, and any unscreened cable between If and If in. which has a rating of 15 A at 250 V, is announced outside diameter, without having to resort to by S ie m e n s E l e c t r ic L a m p s & S u p p l ie s , boring out nuts and clamping pieces, or of L t d ., 38, Upper Thames Street, London, E.C.4. The cast-iron case has fixing lugs for wall mounting, or pole straps can be fitted; alternatively the oval box can be placed in side a lamp standard. It will accommodate double-pole fuses of either the h.r.c. or rewirable types and a detachable plate or plumbing cable gland can be screened to the top or bottom. Metalclad service switch-fuse boxes, double-pole as well as triple-pole and neutral models, are available with capacities of 5 to 80 A at 250 to 440 V with the usual interlocked door. fitting making-up pieces, etc. The gripping They accommodate R-type cartridge fuses arrangement and the connections are seen in made by the English Electric Co. and have the illustration. porcelain handles and bases with looping-in To overcome difficulties frequently7 en contacts. The sealing chamber for cables up countered in removing damaged withdrawal to 0-06 sq. in. is detachable. Connection and screws in 100-A sockets, the screw is fitted into extension chambers are also supplied to form, a sleeve which is located by two strong Allen in association with watt-hour meters, house- head screws, which can be easily removed and service distribution assemblies for domestic new ones fitted without interfering with any premises. flameproof enclosure. The possibility of damage to the socket during the removal of a damaged screw is thus completely eliminated Quality Control and the'whole operation takes only tw o minutes HE symposium of papers on “ Statistical and is carried out in situ. T Quality Control ” ( 74 pages with diagrams The “ I.P.C.” adaptor which is available for and graphs) published by the Ministry of converting the socket for remote control, is Production (district office: Waterloo House, particularly easy to wire. Moreover the pilot Waterloo Street, Birmingham) is a reprint of cable enters the' adaptor parallel to the trailing six out of eight lectures delivered to engineers cable, thereby avoiding a sharp bend at the and industrialists last summer under the auspices point of entry to the cable gland. All the of the Ministry's Birmingham District Produc equipment described is covered by flameproof tion Committee with the co-operation of the enclosure certificates Nos. 1602 and 1692. Board of Education and the Birmingham Central Group I. Technical College. The lectures included a simple introduction to the theory7 of acceptance Coil Tester sampling and information about the practical An instrument that is intended for testing aspects of initiating “ SQ ” control in a factory, air-cored coils of insulated wire to detect short- together with an introduction to more advanced circuited turns in the windings is available from methods of analysing industrial information now the B a n n e r E l e c t r ic C o ., L t d ., Burford available. House. Hoddesdon. Herts. The set is energised from AC mains and its dimensions are only Treating High-speed» Steel 7 inches square. The coil to be tested is placed over an iron core, which projects through the Useful hints on the hardening and tempering top of the instrument, faults causing the pointer of high-speed steel are given on a card available of an indicating meter inset on the sloping for all operators concerned with heat-treatment front of the set to change its normal deflection. from the Controller of Jigs, Tools and Gauges, Continuity tests may also be earned out by 35, Old Queen Street, London, S.W. 1 . 880 E l e c t r i c a l R e v ie w June 1 5, 1945 FINANCIAL SECTION Company News. Stock Exchange Activities. The company had always been ready with a Reports and Dividends supply to meet every demand and had increased Siemens Bros. & Co., Ltd., record a net profit, its generating capacity from 269,000 kW in 1938 after taxation, for 1944 amounting to £340,041, to 586,000 kW in 1944. In this connection as compared with £314,452 in 1943. After they claimed that the construction of their Llynfi paying a dividend of 7^ per cent, (same) £590,003 station had created a record; only nineteen (£488,712) is carried forward. A statement by months elapsed between the cutting of the first the chairman, Lord Queenborough, contains sod and the commencement of commercial an account of the company’s work in connection operation. with the development of the “ Hais ” cable oil Describing the functions of the Central pipe line, of which Siemens Bros, produced 202 Electricity Board, Lord Royden said it was miles. In addition to this work the company wrong to cite the Board as an example of what has, on the telecommunication side, also nationalisation or rationalisation could do. delivered during the war telephone and telegraph He claimed that the facts and figures which he carrier equipment and cable vastly in excess of had placed before the shareholders proved that what was needed during the campaign in North profit-motive and free enterprise were not all Africa, when a line 3,000 miles long was estab evil and could be of greater value to consumers lished by the Army between Tunis and Basra. than any State-created so-called non-profit- In fact carrier equipment supplied is sufficient bearing organisation. to provide speech channels representing approx After mentioning the group’s plans for the imately 850,000 circuit miles. For Army expenditure of £17,000,000 in the first five years acoustic purposes over two million balanced after labour and material became available, armature insets and over two million transmitter Lord Royden said that although they urged a insets have been delivered, as well as three certain measure of evolutionary change they million telephone relays and adaptations, did not think that the consumers were interested including special units operating at a speed of in having political theories tried out on them. 1/2,000th second. Predictors, radar equipment The London Electric Wire Co. & Smiths, Ltd.— and dry cells (over 200 million units) were also Speaking at the annual general meeting on produced in large quanties. In total length of Friday Mr. W. J. Terry, chairman and managing core the cables supplied by the company for director, said that rearrangement of plant, the Services would go round the equator some which would be undertaken as soon as circum eighty times. Another order was for fourteen stances permitted, was the only change-over miles of submarine cable capable of carrying necessary to provide for peacetime activities. 5,100 A at 1,660 V. During the war many millions of miles of After reviewing the balance sheet Lord wires had been produced for use in aircraft, Queenborough referred to the war record of anti-aircraft defence, communications, etc. the staff and mentioned that the Blackheath Large quantities of degaussing strips, shell factory had been damaged in air raids on bands, cadmium-copper line wires, earth rods, twenty-seven occasions. flexible tubing, special wires for the heating of Edmundsons Electricity Corporation, Ltd., held airmen’s clothing and many other products its annual meeting on June 8th. In the course were supplied to the Services. The company of his speech Lord Royden (chairman) reviewed also took a leading part in encouraging in this the accounts (see Electrical Review, June 1st, country the m anufacture of diamond dies p . 808) and stressed the fact that the company’s indispensable for making the fine wires required policy had been to avoid increasing prices if for instruments, valves, radiolocation, etc. possible and in spite of a general increase in costs they had been able to follow that policy The Plessey Co., Ltd., records a trading profit and even to reduce prices in some cases. While for the year ended June 30th last amounting to the amount paid out in taxation and rates had £299,336 (£276,816), plus dividends from sub amounted to £1,863,334 in 1934, interest and sidiaries £9,616 (nil) and interest on securities, dividends had totalled only £616,297. making a total of £321,028 (£286,148). Two Their organisation had been devoted to the interim dividends of 10 per cent, have again co-ordination of financial and technical develop been paid during the year but no final distribu ment of the operating companies. It was un tion is proposed. The carry-forward is £32,297. fortunate that Lord Sankey’s Committee dealing It is proposed to increase the company’s borrow with the place and value of holding companies ing powers from £250,000 to £500,000. had had to suspend its inquiries, for they would Antrim Electric Supply Co., Ltd.—At the welcome any opportunity of meeting any annual meeting on June 6th the chairman criticism that might be made. (Mr. R. P. Beddow) said that the company’s Lord Royden said that progress during the gross revenue had increased from £77,000 in war period had not been due to the prevailing 1939 to over £236,000 in 1944 and the sales of conditions; indeed their growth had been electricity from 8,600,000 to 31,700,000 kWh, retarded rather than improved by additional in spite of the restrictions upon domestic Government control and purely wartime consumption. The company was now taking consumption of electricity. The statement its bulk supply from the Baliylumford station, which he had presented refuted the contention of but there had been no reduction in the price Mr. Herbert Morrison that the electricity supply which was much higher than the Electricity industry was in a state of “ chaos and muddle.” Board for Northern Ireland was paying for its June 15, 1945 Electrical Review 37 AIR BREAK f a i canVtot o f dquU net-cagz m o i a M OIL-IMMERSED *! WORKS: ASTON, BIRMINGHAM 6 Sales Headquarters : BRETTENHAM HOUSE, LANCASTER PLACE, W.C.2 38 Electrical Review June 1 5 , 1 9 4 5 «I a m 33 33 Ü 33 S' fi J 3 3 ai >1 it! :ss ;S1 .a. sjfS lie LIS rO 311 32 E! li It! 31 «It >¡1 ¿1 e a r i n e s «B 153 FISCHER BEARINGS CO. LTD., WOLVERHAMPTON Associated with British Timken Ltd. a« June 15. 1945 E l e c t r ic a l R e v ie w 8 81 thi S' <-At Present the earliest date for stated that as the accounts closed before the e Antrim companies’ under- liberation of Denmark they were of necessity W.tS r, but un£ler a recent development incomplete. It had therefore been decided to scheme the Electricity Board would be em convene an extraordinary general meeting to powered to acquire the undertakings. It was which more comprehensive accounts and the their view that the Electricity Act of 1931, question of payment of dividend would be under which the scheme was made, was not submitted. intended to apply to statutory undertakings such as theirs and strong representations had Cable & Wireless (Holding), Ltd., are to pay a been made against the confirmation of the dividend of 4 per cent., less tax at 9s. 2d. (same). scheme. The net profit for 1944 was £1,199,079 £1,220,976). The Lothians Electric Power Co. records net revenue for 1944 totalling £110,957, plus interest Cable & Wireless, Ltd. (the operating com £1,672. Taxation takes £69,500 and apparatus pany) are paying a final dividend of 23 per cent, on hire written off £615. With £19,076 brought less tax at 8s. lid., making a total distribution in there is £61,590 available. Reserve account of 4 per cent. (same). The net profit was receives £26,075 and a dividend of 6 per £1,237,757 (£1,228,892). cent, is again paid. A sum of £20,215 is Marconi’s Wireless Telegraph Co., Ltd., which carried forward. Since 1939 the number of is controlled by Cable & Wireless, Ltd., pro consumers has increased by 1,631 to 15,653 and poses to pay a final dividend of 33 per cent., the load connected by 8,809 kW to 42,981 kW. less tax at 9s. 9d., again making 7 per cent, for The B.E.T. Electricity Supply Co., Ltd. (con the year. After provision for taxation the net trolled by the British Electric Traction, Co. Ltd.) profit is £210,381 (£244,829). reports that dividends, interest, etc., for the The National Electric Construction Co., Ltd., year ended March 31st last amounted to £79,456 reports a net profit for 1944 amounting to (£79,339). The net profit was £32,425 (£31,379). £25,500 (£24,246), after providing £27,500 A sum of £12,000 (£12,457) goes to reserve and (£26,500) for taxation. The dividend is main the dividend is maintained at 5 per cent., £31,889 tained at 10 per cent. (£30,189) being carried forward. Keith Blackman, Ltd., are to pay a dividend Weston-super-Mare & District Electric Supply of 20 per cent. (same). The profit for the year Co., Ltd., a subsidiary of B.E.T. Electricity ended March 31st last amounted to £135,684, Supply Co., Ltd., reports a net revenue for as compared with £192,451 in the previous year. 1944 of £64,704 (£57,168). A final dividend of The carry-forward is £45,181 (£43,497). 5 per cent, is to be paid, making 8 per cent., tax The Skefko Ball Bearing Co., Ltd., reports a free, and £9,000 is again placed to reserve, net profit of £180,594 (£178,082). A final leaving £3,951 (£4,064) to be carried forward. dividend of 10 5/6 per cent, tax free, again The Merthyr Electric Traction & Light Co., brings the total distribution for the year to Ltd., which is controlled by B.E.T. Electricity 173 Per cent., tax free. Supply Co., Ltd., reports a revenue for 1944 of Johnson Matthey & Co., Ltd., are to pay a final £42,329 (£39,089). The net profit was £9,716 dividend of 3 per cent, (same) plus a cash bonus (£10,256). After allocating £7,000 (same) to of 6 per cent. (4 per cent.), making 12 per cent. •general reserve and paying an ordinary dividend (10 per cent.) for the year. of 6 per cent, (same) £5,142 (£5,126) is carried forward. Thomas De La Rue & Co., Ltd., are to pay a final dividend of 30 per cent., again maleing 40 The Ascot District Gas & Electricity Co- per cent, for the year. records a revenue for 1944 of £64,931. A final ordinary dividend of 33 per cent, is to'be paid- Dictograph Telephones, Ltd., are again paying making 6 per cent., and £22,997 is carried an interim dividend of 4 per cent. forward. Enfield Rolling Mills, Ltd., are again paying a dividend of 5 per cent. The Bridgwater & District Electric Supply & Traction Co., Ltd., is maintaining its dividend International Combustion Ltd., is paying an at 6 per cent. The trading balance for 1944 interim dividend of 5 per cent. (same). was £28,256, as against £30,138 for 1943. The East African Power & Lighting Co., Ltd.— New Companies The 357,083 new £1 ordinary shares to be issued British Insulated Callender’s Cables, L td .- will be offered at 29s. each in the proportion Public company. Registered May 31st. Capital, of one for every preference or ordinary share £100. Objects: To acquire for the purposes held. of amalgamation all or part of the assets, The Electric & General Investment Co., Ltd., liabilities and undertakings of British Insulated reports a net profit for the year ended May 31st Cables, Ltd., Callender’s Cable & Construction amounting to £3,684, as compared with £3,299 Co., Ltd., and Callender’s Trust, Ltd.; to adopt in the previous year. A final dividend of 7 per agreements with the three above-named com cent, is to be paid, making 10 per cent. (same). panies and the liquidators thereof; and to carry on the business of manufacturers of, and Franco Signs, Ltd., are maintaining their dealers in, insulated cables and wires, including dividend at 10 per cent. The net trading profit paper, rubber and silk insulated cables, oil and of operating subsidiary companies for the year gas pressure cables, telecommunication cables, ended September 30th, after taxation, was accessories and fittings, wireless equipment, etc. £30,970 (£28.577). Directors: Sir Alexander Roger (director. The Great Northern Telegraph Co., Ltd. ( o f Telephone & General Trust, Ltd.); T. H. D e n m a rk ) held its ordinary general meeting in Martin-Harvey (director, St. Helens Cable & Copenhagen on May 31st. The c h a ir m a n Rubber Co., Ltd.); C. Pipkin (director, Anchor 882 E l e c t r i c a l R e v ie w June 15, 1945 Cable Co., Ltd.); D. W. Aldridge; W. G. April 3rd. 870,000 ordinary and 52,500 Hendry; P. V. H unter; W. H. M cFadzean; preference shares taken up. £922,500 paid. Sir Eugene Ramsden, M.P. (director, A. & S. (All issued shares are fully paid and have been Henry, Ltd.); and F. Waine (director, Radio- converted into stock.) Mortgages and charges: Gramophone Development Co., Ltd.). Re £600,000. muneration of directors, £2,000 each per annum. Elexcel, Ltd.—Capital, £250,000 in 125,000 The chairman and deputy chairman are to be cumulative preference and 125,000 ordinary entitled to such additional remuneration as may shares of £1 each. Return dated April 18th. be voted to them by the directors, not exceeding 125,000 shares taken up. £2 paid. £124,998 in the aggregate £12,000 per annum. Registered considered as paid. Mortgages and charges: office: 103, Mount Street, W.l. Nil. G. M. Engineering (Acton), Ltd.—Private Mortgages and Charges company. Registered June 2nd. Capital, £50,000. Objects: To carry on the business of Page & Miles, Ltd.—Mortgage on 60, Western manufacturers of, and dealers in, switchboards, Road, and 43, Castle Street, Brighton, dated switchgear, dynamos, motors, batteries, tram- May 17th, to secure all moneys due or to cars, electric vehicles, etc. Directors : P. V. W. become due from the company to Barclays Gell, Neachley Hall, near Shifnal; R. H. M. Bank, Ltd. Drake, West Riddens, Ansty, Cuckfield; P. A. L. J. Ive, Ltd.— Mortgage on 179, 179a and Smith, Morolin, Lower Hampton Road, 179b, Queen’s Road, W atford, dated May 7th, Sunbury-on-Thames; and W. W. Parker, to secure £2,250 and further advances. Holders: Riddens Cottage, Ansty, Cuckfield. Secretary: Halifax Building Society. W. W. Parker. Registered office: Standard Road, Park Royal Road, N.W.10. Winding-up Petition Farrant (Electrical Fittings), Ltd.—Private B. & B. Batteries, Ltd.—A petition for the company. Registered May 26th. Capital, £500. winding-up of the company will be heard at the Objects: To carry on the business of manu Royal Courts of Justice, Strand, London, on facturers of, and dealers in, electric lamps, June 18th. apparatus and fittings, radio apparatus, etc. First directors: E, R. Farrant and Effie W. Farrant, both of 142, High Street, Bushey. Liquidations Registered office: 142, High Street, Bushey. Reliance Lift & Engineering Co., Ltd.—Meetings Davidsons A.C.D.C. Co., Ltd.—Private com July 2nd, at the office of J. R. Phillips & Co., pany.. Registered May 30th. Capital, £1,000. Lloyds Bank Chambers, Hustlergate, Bradford, Objects: To carry on the business of manufac to receive an account of the winding-up by the turers of, and’ dealers in, electrical and other liquidators, Messrs. W. Raynor and S. W. domestic appliances, etc. Directors: E. David Grayston. son, 89, Gladstone Street, Mansfield, and A. Davidson, 5, Grove Street, Mansfield. Regis Bankruptcies tered office: Waverley House, 37, West Gate, P. S. Kennedy, electrical engineer (trading as Mansfield, Notts. Martin & Company), 102, High Street, Stoke Cabath Electrical, Ltd.—Private company. Newington, London.—This debtor, who filed, Registered May 26th. Capital, £500. Objects: his own petition in 1923, applied for his dis To carry on the business of manufacturers of charge at the London Bankruptcy Court on and dealers in electrical, gas, oil and quartz June 7th. The discharge was granted, subject lamps, reflectors, bells, fires, cookers, refrig to a suspension of fourteen days. erators, and electrical and gas plant and acces S. W.- Bridges, radio and electrical dealer, sories, neon and other signs, gramophones, 37, Melgund Road, Highbury, N.5, lately .wireless apparatus, etc. Directors: R. J. carrying on business as British & American Gathercole, 23, Gladeside, Shirley, Croydon, Radio Service Co., 10 & 11, Field Place, St. and Valerie E. Scott, 126, Long Lane, Croydon. John Street, Clerkenwell, E.C.l, and 219, Registered office: Scarbrook Chambers, 56, Pentonville Road, N.I.—Application for dis High Street, Croydon, Surrey. charge was made at the London Bankruptcy Court on June 7th and was granted, subject to Company to be Struck off Register six m onths’ suspension. The following company is to be struck off the W. Sumner and E. Sumner, electrical and Register within three months from May 25th, mechanical engineers, trading as “ W. & E. unless cause is shown to the contrary: Cheshire Sumner,” 65, Victoria Street, and 108, St. Cables, Ltd. Mary’s Road, Garston, Liverpool, and 9, Grange Road, West Kirby.—Proofs for Companies’ Returns dividends by June 22nd to the trustee, Mr. A. Barrett, Hunter Street (Friends’ Meeting House), Statements of Capital Liverpool, 3. Thornbury & District Electricity Co., Ltd.- W. Sumner andE. Sumner (separate estate of W. Capital, £15,000 in £1 shares. Return dated Sumner).—First and final dividend of 20s. in December 28th. 12,404 shares taken up. the £ payable June 14th at the Official Receiver’s £8,004 paid. £4,400 considered as paid. Mort office, Hunter Street, Liverpool, 3. gages and charges: Nil. W. B. Ralphs, electrical contractor, lately Northampton Electric Light & Power Co., carrying on business at 2, Mulgrave . Road, Ltd.—Capital, £1,000,000 in 925,000 ordinary Middlesbrough.—Day appointed for proceed stock and shares of £ 1 each and 75,000 preference ing with the public examination adjourned stock and shares of £1 each. Return dated sine die. June 15, 1945 E l e c t r ic a l R e v ie w 883 to 48s. Calcutta Trams hold their recovery to STOCKS AND SHARES 72s. 6d., some 11s. above their recent lowest, T u e s d a y E v e n in g . and Cawnpore Electrics keep good at 51s. In the communication group, Canadian Marconi ^^TOCK EXCHANGE prices were sharply retain all their popularity with the buyers from depressed by the speech maoe by Mr. Attlee, overseas, whose demand has raised the shares leader of the Opposition, in the series of political to 19s., more than double the price ruling at the broadcasts last week. The speech dealt with a beginning of this year. wide range of subjects. From the Stock Exchange point of view, that which referred to Price Fluctuations proposed nationalisation of industries was the British Insulated at 61 and Callender’s Cable most interesting in relation to the probable effect at 6^ are respectively £ and -ft- better upon it would have upon security values. Falls publication of the full terms of the proposed occurred throughout the industrial section, but merger. Automatic Telephones, with a rise to prices of gilt-edged securities, more especially 68s. 6d., have recovered most of the previous in the British Government group, were upheld loss. Hopkinsons, the increased dividend tardily by the announcement of a new issue of 24 per making its effect felt, are 3s. 9d. better at 83s. 9d. cent. National War Bonds on terms which made Metal Industries “ B ” have advanced 6d. to the currently-quoted issues look cheap by 48s. after their decline to 45s. The dividend comparison. After the fall, a fairly general has been deducted from Henley’s and the price rally occurred, though this failed to wipe out is better at 27s. 9d. General Electrics hardened entirely the previous loss. Something of a Is. to 95s. 6d., Aron Electrics to 63s., Vactrics feature has been a violent recovery in the prices to 23s. 6d. Other rises include Newman of Brazilian Tractions and other dollar stocks. Industries 8s., Crabtree 43s., and Babcock & Home Electricity Supply Wilcox 2s. 3d. higher at 55s. 3d. Murex are ft up at 96s. 3d. J. & F. Stone improved to The speech has had no effect upon prices of 11s. 6d. Not all the changés are upward. shares in the electricity supply market. On Electric Constructions are easier at £3. Enfield balance, the week’s movements are rather Cables at 63s. 9d., Ericssons at 54s., and British against holders, but the actual fall occurred a Thermostat at 19s. 3d. ex dividend, show small fortnight ago, when the majority of prices in losses. this department lost amounts ranging from 6d. Siemens shares at 35s., ex 9d. net dividend, to 3s. Accordingly, as no appreciable amount have recovered to a great extent from their of selling followed upon the declaration of recent dullness. The profits are augmented by Mr. Attlee, quotations were left almost un £30,000 from taxation reserves that are not now changed. Electrical Finance & Securities are required, and show an improvement of £78,500 better at 62s. 6d., and London Electrics at 31s. 6d. as results of trading. have gained the 6d. Lower prices are quoted After their drop to 9s. 3d., Brush Electrical for Metropolitans, 42s., Llanelly 29s.. British ordinary shares recovered to 10s., at which Power & Light 31s., and a few others. latter price a good many shares changed hands. Cable & Wireless Radio Shares Cable & Wireless ordinary stock, which fell Radio activity continues to be a mild feature 12 points last week, to 87, recovered a point or of the miscellaneous market. Cossors are for two and maintained a steady tone at 88^ when the moment the liveliest in the group. From the dividend was announced at the expected 33s. the price rose rapidly to 36s., to react a rate of 4 per cent, for the year 1944. The few pence. Philco are firm at 14s. 6d. E.M.I. profit is down £21,900, but there is plenty of kept close to 34s. 6d. The effect of the margin for payment of the dividend. This being Treasury’s partial relaxation of the war ban distributed once a year, the net payment is 2 per placed upon new issues is thought likely to cent., and at 86i ex the dividend, the yield comes become manifest before long in this section. to £4 12 s. 6d., which may be considered a reasonable return under present conditions. De la Rue Marconi’s Wireless Telegraph Co. again pays De la Rue shares rose 11s. 3d. to 10J upon 7 per cent, for the year and in this case the profit declaration of the 30 per cent, dividend, making of £210,400 is about £34,000 lower than that of 40 per cent, for the year, out of profits showing 1943. Marconi Marines are better at 35s. 6d. that the company could have paid twice as much by dividing up to the hilt. The results are Home Rails and Others better than those of a year ago, and after a fall Home Railway stocks attract no great degree to 10 , the price is now within 12 s. 6d. of the of public attention; prices remain steady, with highest that it touched a couple of months ago. little variation from day to day. British The yield at the current price is a modest Electric Traction deferred is 40 points up, at £3 16s. per cent. The company, however, has 1205, after its fall of 50 a fortnight ago. Thomas interests in plastics, and these, with its own Tilling ordinary at 58s. have regained Is. of the branches of industry, are considered sufficiently previous fall of 4s. West Ridings gave way promising to justify the present quotation. E 8 8 4 E l e c t r ic a l Rivœw June 15, 1945 Advertising in Export Markets The Manufacturer’s Responsibility PINIONS seem to differ B y “ S a la ” of education is to be complete he whether it is advisable for the must ensure that he reaches all Oadvertising programme for their exportprospective buyers. In addition, he must markets to be carried out by manufacturers, ensure that they are told where supplies of or if it is best left to agents. The securing his product are available. and maintaining of export trade should be With some idea of what total volume of looked upon by the manufacturer as an business he looks for from an overseas expansion of his regular trade, and as such, market he will decide on the total amount of the control of advertising should be in his advertising expenditure which he can afford own hands to adapt and regulate so as to to endeavour to secure that volume. Possibly, ensure that his advertising appeals are quite probably, it is a sum out of all pro reaching the right people in a favourable portion to his initial returns. Nevertheless, manner. By all means let him co-operaie to he has the sole control of it to adapt as he the full in obtaining advice and suggestions may, to reorganise it if necessary and to from his agent—a man who is a native of the ensure that he gets adequate coverage and country in which he is representing the manu full value for money expended. In short, he facturer and can suggest and recommend takes over all responsibility for introducing suitable advertising media which will give the and popularising his product, as he rightly manufacturer best returns for his expenditure. should, and leaves the agent free to carry" out his main function of distribution and meeting The Agent’s Position the demands which have been created for the The manufacturer can never hope for product. Whatever other duties, such as successful or lasting results if he simply personal contacts, the agent carries out he leaves the question of advertising to the will do to assist the manufacturer’s scheme agent. More often than not the agent holds of introduction in which he is just as much the agencies for other related products and interested as is the manufacturer. With a he cannot be expected to have quite the reasonable percentage to cover handling, maximum amount of enthusiasm for one selling and distribution expenses and profit particular line when he is handling a number the agent should stand a fair chance of of others too. Moreover, if some of the related securing a proper share of the market for the lines are more expensive items bringing him manufacturer if his (the agent’s) price is right. in a better margin of profit, he will naturally concentrate most on them. This policy is Reasons for Failure admittedly shortsighted but, nevertheless, it With full control over advertising the does often arise. manufacturer will expect his product to Excellent advertising efforts have been secure a fair share of the market if it meets made by many agents by spreading the cost all the necessary requirements and fully of advertising over all the products for which justifies its price (unless a planned, destructive they hold agencies, each advertisement com price competition is in being). The failure bining a display or a mention of the principal on the part of an agent with an adequate products and the local depots through which selling and distributive organisation to they are obtainable. These efforts, however, achieve this aim can be attributed to one of cannot be expected to give the maximum three things:—(1) The agent’s selling price advertising display to the product of any one may be too high; which may be due to manufacturer. If the agent takes on himself (2) the manufacturer's price being too high; the responsibiliry of advertising and adds or (3) the manufacturer may have mishandled this cost to the selling price, then the manu his scheme of educating the prospective user facturer has no cause to complain that the to the quality advantages of his product to advertising is inadequate or that such justify its present price. In practice, point (3) advertising costs when added to the selling should never arise if the manufacturer has price by the agent are putting the price out handled his advertising in the right way. It of reach of full development, or are making plainly proves, however, the absolute neces the price uncompetitive. sity for him to take on his own shoulders the When a manufacturer markets a new responsibility of introducing and popularising product at home and wishes to establish it in his product with the assistance and guidance the shortest possible time he finds it absolutely of the agent. If the manufacturer, with such necessary to advertise it adequately, and this a wide knowledge of his own product, its also apphes to overseas business. He has to uses, its advantages, its technical points, educate prospective buyers to the uses and cannot succeed in creating the market, the advantages of his product dnd if his scheme agent alone cannot be expected to do so. June 1 5, 1 945 E l e c t r ic a l R e v ie w 8 8 5 \KW PATKVrS Electrical Specifications Recently Published The numbers under which the specifications will be Okonite-Callender Cable Co., Inc.—“ Pot- printed and abridged are given in parentheses. heads or terminals for electric cables." 7843 43. Copies of any specification (li. each) may be July 3rd, 1942. (569387.) obtained from the Patent Office, 25, Southampton Philips Lamps, Ltd., and A. Nemet.—“ X-ray Buildings, London, W.C.2. control apparatus.” 13553. August 19th, 1943. 1RCRAFT-MARINE PRODUCTS, INC. (569484.) 4 —“ Electrical connectors.” 17961/42. Philips Lamps, Ltd., and C. L. Richards.— December 3rd, 1941. (569366.) “ Tuning arrangements for wireless receivers Akt. Ges. Brown, Boveri & Cie.—“ Slag and the like." 17124. October 18th, 1943. removing device for pressure fired furnaces." (569451.) 16885/43. November 19th, 1942. (569449.) Standard Telephones & Cables, Ltd.—“ Radio beacons for defining landing paths for aircraft.” Aktiebolaget Elektrolux.—“ Suspensible re 2591/42. March 6th, 1941. (569406.) “ Piezo frigerator cabinets." 15115/43. September electric crystal mounting.” 20506/43. October 29th, 1942. (569442.) 7th, 1942. (569454.) “ Selenium coated Automatic Telephone & Electric Co., Ltd., elements and method of making them.” R. Taylor and G. T. Baker.—“ Electrical 16824/42. July 12th, 1941. (569473.) signalling systems.” 19426. November 20th, “ Vacuum tube oscillators.” 19765/43. 1943. (569487.) November 30th, 1942. (569517.) H. E. Blackiston.—“ Terminal apparatus for Standard Telephones & Cables, Ltd., M. M. domestic and other electric and gas supply.” Levy and T. W. Elliott.—“ Arrangements for 9431. June 11th, 1943. (569396.) generating and observing electric pulses.” British Thomson-Houston Co., Ltd., and 1536. January 29th, 1943. (569474.) J. H. Walker.—" Variable-speed dynamo- Standard Telephones & Cables, Ltd., A. A. electric couplings.” 8990. June 4th, 1943. New and E. L. Bodycombe.—“ Formation of (569391.) adherent silver films on non-metallic surfaces.” Brush Development Co.—“ Protective means 7941. May 19th, 1943. (569388.) for piezo-electric units and methods of producing Sulzer Frères Soc. Anon.—“ Gas turbine same.” 3009/42. March 8th, 1941. (569493.) plants.” 6036 43. April 18th, 1942. (569379.) " Piezo-electric transducers.” 10376/43. June L. Tordai.—“ Construction of dry-cell 27th, 1942. (569510.) batteries.” Cognate applications. 10050 43 Crompton Parkinson, Ltd., and A. W. and 14190/43. June 22nd, 1943. (569482.) Angold.—“ Prepayment mechanism for meters United Air Lines Transport Corporation.— and the like.” 5324. April 2nd, 1943. (569501.) “ Radio receivers.” 7123/43. June 22nd, 1942. Electric Furnace Co., Ltd., and S. G. King.— (569417.) “ Electrical controlling apparatus employing a Westinghouse Electric International Co.— grid-controlled gas-filled electronic relay.” “ Electron-discharge devices.” 11271/42. 10409. June 28th, 1943. (569551.) August 13th, 1941. (569494.) Ford Motor Co., Ltd.—“ Electric welding apparatus.” 14051/43. September 12th, 1942. (569437.) H. Gallusser.—“ Electrically heated drum TRADE MARKS furnaces.” 9195/43. June 27th, 1942. (569393.) ECENT applications for trade marks include J. C. A. Gray and S. Stansfield.—“ Electrical the following, objections against which joint boxes and glands for switchgear, service may be entered within a month from June 6th :— boxes and other electrical apparatus.” Cognate E a s c o E l e c t r ic a l (design).— No. 630,417, applications. 9961/43 and 16881/43. June 21st, Class 9. Signalling lamps; telephonic appara 1943. (569480.) tus ; rectifiers and transformers; appliances for G. Haim and H. P. Zade—“ Terminal jointscharging batteries; and parts of the aforesaid for electric cable with plastic sheath.” 10006. goods included in Class 9, but not including June 21st, 1943. (569481.) electric batteries. Also No. 630,418, Class 11. T. Hindle.—“ Electric baling presses.” Portable electric lamps, and parts thereof not 19715/43. January 25th, 1944. (569516.) included in other classes. E a s c o .—No. 630,419, N. E. A. Kleen.—“ Absorption or adsorption Class 9. Signalling lamps; telephonic appara refrigeration.” 8237/43. June 6th, 1942. tus ; rectifiers and transformers; appliances (569418.) for charging batteries; batteries; and parts of Linde Air Products Co.—‘ Electric welding the aforesaid goods included in Class 9. Also apparatus.” 20804/43. December 18th, 1942. No. 630,420, Class 11.—Portable electric lamps (569456.) and parts thereof not included in other classes. Marconi's Wireless Telegraph Co., Ltd.— R e c t o s t a t .—No. 632,819, Class 9. Electric “ Television transmitting tubes.” 13613/43. battery chargers and rectifiers therefor.—Eric August 21st, 1942. (569436.) Lewis Eastell and Margery May Existed, Marconi's Wireless Telegraph Co., Ltd., and trading as Easco Electrical, 6 & 8, Brighton S B Smith —“ Equi-signal radio direction Terrace, London, S.W.9. finder systems.” 17162. December 2nd, 1940. Octopus.—N o. 633,114, Class 9. Wiring (569435.) „ . . installations incorporating a central junction or Metal & Thermit Corporation.— Process of terminal box for carrying electric current from tin electroplating” 16649/43. March 19th, the main supply.—A. W. M. Hartley, trading as 1943. (569447.) Hartley & Co., 132, Frankwell, Shrewsbury. 886 E l e c t r i c a l R e v ie w June 1 5 , 1 9 4 5 CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work Birmingham.—Improvements, Canweli Hall Contracts Open Hospital (£ 13,140); and nurses’ accommodation, Where “ Contracts Open ” are advertised in our Yardley sanatorium (£17,837) and at West "Official Notices ” section the date of the issue Heath (£9,960); city engineer. is given in parentheses. Buildings, central depot site (£50,000); Burnley.—June 30th. Electricity Department. Alfred Hughes & Sons, Ltd. Supply and delivery of transformers and e.h.v. Blackburn.—Extensions, Technical College; cables. (June 8th.) borough engineer, Town H all. Gellygaer.—June 30th. U.D.C. Electricity Bognor Regis.—Junior technical school for Department. House service units. (Juñe 1st.) building (£5,780), for West Sussex C.C.; county Hazel Grove and Bramhall.—June 30th. architect, Chichester. Electricity Department. Three 250-kVA trans Bolton.—Works additions, School Hill; J. C. formers. (See this issue.) Birch, Ltd. Hull.—July 13th. Electricity Department. Works additions, Weston Street; Bolton Pumps. (See this issue.) Leathers, Ltd. Houses (52), Cameron estate; housing Littleborough.—June 19th. Electricity Depart director. ment. 11-kV feeder cables. June 1st.) Bournemouth.—Memorial homes for disabled Maesteg.—June 21st. Electricity Department. soldiers (£50,000); borough engineer. Two l.v. feeder cables. (See this issue.) Whittingham (near Preston).—June 27th. Croydon.—Extensions (£8,600), New Adding Committee of Visitors, Mental Hospital. ton School; town clerk. Wiring of farms and buildings. (See this issue.) Dudley.—Workshops, Ivanhoe Street ; Will- mot Trucks, Ltd. Goole.—Extensions (£6,000), Borough Lib Orders Placed rary ; borough surveyor. Blackburn.—Town Council. Accepted. Five Haslemere.—Council offices and civic centre; refrigerators for Queen’s Park Hospital.— U.D.C. surveyor, Museum Hill. Geo. Greenwood. Hastings.—Renewal of electric lighting instal Bolton.—Electricity Committee. Accepted lation at municipal hospital (£1,300), for Cor for extensions at power station. Reinforced poration Health Committee. concrete cooling tower.—Bierrum & Partners. Builders’ work for new switchgear premises, etc. Hyde.—Works additions, Randall Street; —Wm. Gornall & Sons. Steelwork.—R. Bennett’s (Hyde), Ltd., paper size makers, W atson & Co. Boston Mills. Cardiff.—Electricity Committee. Accepted- Leeds.—Houses (226); city engineer. Two switchgear units (£1,276).—Allen West & Lincoln.—Boys’ secondary school; Boultham Co. Infra-red lamp heating plant (£98).— Park Road, and reconstruction of Friars’ Lane General Electric Co. Repairing 1,000-Ah School; R.C. authorities. battery (£504).—Tudor Accumulator Co. London.—S t . P a n c r a s .—Flats (176), various Twelve and twenty cwt. lifts at boiler house sites; borough engineer. (£4,500).—Express Lift Co. Flats, Hampshire Street, etc. (41) and Oakley Glasgow.—Corporation Cleansing Special Street area (100); A. J. Thomas, architect. Sub-committee. Accepted. 34 traction batteries K i n g ' s C r o s s . — Reconstruction, railway (£422).—Tudor Accumulator Co. station; L.N.E.R. Manchester.—Public Health Committee. Ac Perth.—Houses (32); burgh surveyor, 16, Tay cepted. Platform type goods truck for Withing- Street. ton Hospital.—Electricars. Sheffield. — Rebuilding houses, Shirecliffe Morecambe. — Electricity Committee. Ac (£13,104); Melling Bros., Ltd. cepted. Cable for twelve months.—W. T. Glover & Co. Smethwick.—Works additions, Ballot Street; Idoson Motor Cylinder Co., Ltd. South Shields.—Permanent houses (50); acting Contracts in Prospect borough engineer. Particulars o f hew works and building schemes for Office additions for the N orthern Press, Ltd.; the use of electrical installation contractors and F. W. Newby, architect, King Street, South traders. Publication in this section is no guarantee Shields. that electrical work is definitely included. Alleged Factory, Pilot Street for Shaffer Aircraft, inaccuracies should be reported to the Editors. Ltd.; P. L. Browne, Son & Harding, architects, Aylesbury.—Houses (26) and bungalows (12), Pearl Buildings, Newcastle-on-Tyne. for R .D .C .; surveyor, Council Offices, Bucking Sunderland.—Houses (800); borough engineer. ham Street. Wallsend.—Alterations at Town Hall and Birkenhead.—Houses (50), Council estates; houses (20), Westmoreland Estate; borough borough engineer. engineer. Children’s hospital, Wexford Road, for T.C.; York.—Houses (100), Acomb estates; city town clerk, Town Hall. engineer. June 15, 1 9 4 5 E l e c t r ic a l R e v ie w 3 9 A Spire assembly is a tight assembly — and nobody need trouble to send us any jokes about tbe word ‘tight It’s no joke fumbling and fitting washers and nuts on to invisible bolts. It’s no joke knowing that the things will probably shake loose anyway inside a few weeks. If you use a Spire fixing these worries disappear along with the nuts and washers. There are a few thousand firms making motor vehicles and radio sets and hundreds of other products who know that for light assembly Spire means strength. If you don’t know but would care to find out, send us your drawings or the parts of an assembly. W e’ll see what Spire can do and let you have the answer in a couple of weeks — more or less. \ _T H A T ’S FixedTH AT! H e re ’s aS pire N u t of th e U type that is doing noble work for electrical manufacturers con cerned with cable assembly. The NU 1381 replaces the nor mal nut and washer used for holding the cable clips on per forated cable trays. The U fix ing makes such blind assembly ^ g ^ easy. I he Spire Nut slips into A position gripping the tray and BETTER there it is. ready — no more fumbling about with a nut that way of fixing you can’t see. Simmonds Aerocessones Limited ■ Great West Road • London • A Company o f the Simmonds Group e 4 0 E l e c t r i c a l R e v ie w June 15, 1945 PORTABLE tools ^- testing current through the earth wire. The importance of regular testing is officially stressed. W rite for Pamphlet A66 The old phrase “ a gem of the purest water ” BRITISH CENTRAL is particularly applicable to Knowles Electro lytic Plant for the production of hydrogen and ELECTRICAL CO, LTD oxygen. 6-8 ROSEBERY AVENUE, LONDON, E.C.1 Where purity is of prime importance, as in hydrogen for processes involving catalysis, in the hydrogenation of synthetic foodstuffs, etc., the Knowles electrolytic cell produces d ire ct and without further purification, hydrogen which is 99 95% pure, with oxygen 99-8% pure. The Knowles plant is unique in its simplicity, making it possible to operate with a minimum of labour which need not be skilled. Special devices make the equipment safe under all conditions, maintenance is reduced to negligible proportions, and the plant has exceptionally long life. IN ADDITION TO A Equipment for plants of a n y size can be COMPREHENSIVE supplied. R A N G E O F STANDARDISED SIZES, SPECIAL TYPES ELECTROLYTIC PLANT FOR HYDROGEN C OXYGEN ARE M A D E AT SHORT NOTICE Send particulars of your requirements ALWAYS IN STOCK to our Technical Service Dept. IMMEDIATE DELIVERIES THE INTERNATIONAL ELECTROLYTIC PLANT C O . LT D . CRf.SSHLL MHNÏÏFBCIUSF tS 31-32 TOUUeR STRCCT- BIRMINGHAM 19 SANDYCROFT - CHESTER PHONE: ASTON CROSS 3463-4 ~~ = GRAMS: OHMIC • BIRMINGHAM H O . l 1 Jurte 15, 1945 Electrical Review 41 C onstructional Features N ? 4 (tcrdv ||unninc DUE TO ^ SENSITIVE GOVERNOR & HEAVY FLYWHEEL The perfect performance of the Petter Air Cooled Engine commends it for all power purposes, including electric generation, pumping,concrete mixing, hoisting and driving all kinds of machinery. Sizes 1 J . 2 & 3 B .H .P . Full particulars from PETTERS LTD. LOUGHBOROUGH, ENGLAND V 4 2 E l e c t r ic a l R e v ie w Jane 15, 1945 from Past Experience - - A future Conclusion FALKS F o r m u E m m t n iL ¿ F o m r m m OUR NEW SHOWROOMS [ | WILL CONTAIN A COMPLETE : RANGE OF U P-TO -DATE ELECTRIC LIGHTING UNITS ! Trade Counter : 34, Queen St., Cheapside, E.C.4 A ll correspondence to Head Office: FALK, STADELMANN H CO.,LTD., Ql, FAR RlNG DO N PD..LONDON, E.C.I. ® 89.42A CERAMIC INSULATORS HART FOR RADIO S t o r a g e Batteries FOR E l e c t r i c Li g h t i n g a n d Po w e r I nstallations :• h £ - :- X . 1 U ,: 1 : 1 A L S O FO R HIGH TENSION LOW TENSION AND REFRACTORIES HART ACCUMULATOR CO. LTD. JAMES MACINTYRE & Co. Ltd. MARSHGATE LANE, STRATFORD, LONDON. E.15 WASHINGTON WORKS Telephone : MARyland I36I/3 Branches at Birmingham, Bristol, Cork, Dublin, Glasgow, Manchester BURSLEM Newcastle-on-Tyne • Nottingham and Westminster June 15, 1944’ E l e c t r ic a l R e v ie w 43 co so NO ALTERATION TO EXISTING NETWORKS FLEXIBLE APPLICATIONS RELIABLE RELAYS AT LOW COST (standard type) METROVICK mppuvr SYSTEM In the post-war world, the Metrovick RIPPLAY system of centralized control will be in great demand by Supply Authorities. This method of selec tive control embodies a Metrovick RIPPLAY injection equipment by which H.F. ripple currents are injected into the E.H.V. network, which in turn, actuate suitably tuned Metrovick relays installed at desired points on the L.V. supply system. A M etrovick „ Ripplày Relay G/H402 TRAFFORD PARK - M ANCHESTER 17. IMPROVE YOUR LIGHTING In consultation with METROVICK’S ILLUMINATING ENGINEERS 4 4 E l e c t r i c a l R e v ie w June 15, 1945 3 7 Y P A R C OF RELIABLE SERVICE 1 ^ ^ IN TRE DISTRIBUTION CM A Cables o f E L M A Lamps RELIABLE a c -m r~ a ELECTRIC A b C— I; Cond u its SUPPLIES EL FA Fittings BEAMA Heating and Cooking Appliances Ironclad and Branch Switchgear Accessories in General WE HANDLE HIGH-CLASS MATERIAL ONLY OUR ADDRESSES : LIVERPOOL MANCHESTER CARLISLE BIRKENHEAD 1-9 Stanley St. 3a, Norfolk St. Paternoster 94 Chester St. Pall Mall Row DOWNES & DAVIES These approved and certified Conduits and Fittings are consistently reliable un der the most arduous conditions of service. You can specify none better. im M S IlN A V HILDICK & HILDICK RADIO MASTS WALSALL TU BE WORKS O n i r r ITD tyburn r? erdington. PLECK ROARvWALSALL. rULtb L_ BIRMINGHAM.-24 London Stores: 9 Howland Mews West, Howland St., W .l. Phone: Museum 6225 June 15, 1945 E l e c t r ic a l R e v ie w 45 are what everybody seems to want. We want to supply them. Quoting dates for erSt delivery is difficult, but if you join the queue you may feel confident of fair s treatment—worth waiting for. DELIVERY IN STRICT ROTATION T H E NORMAND ELECTRICAL CO. LTD. north STREET -C LAPHAM COMMON LONDON S W 4 TEL: MACAULAY 3211-4 4 6 E l e c t r i c a l R e v ie w June 15, 1945 ewe W hy be content with instruments which have reduced accuracy, reduced life and need tapping ? A few pence extra ensures the best possible bearings, namely :— SAPPHIRE. No Need to Use Substitutes Now — Delivery of the Real Thing from Stock. BRITISH JEWEL MANUFACTURING C° LTD ADELPHI STREET • SALFORD • 3 Telephone : BLA 5040 Telegram s : • BRITJUEL, MANCHESTER ' HOPKINSON MOTORS & ELECTRIC CO. LTD . in common with most other engineers II W V S are wholly employed on production H / t T H for furthering the total war effort. On the termination of hostilities they will be in the position to supply: ELECTRIC MOTORS Fractional horse-power motors t o m Industrial motors up to over 100 h.p. ELECTP/C ¿4MP ALTERNATORS • CONTROL GEAR LOCKS & OTHER ELECTRICAL EQUIPMENT Lox-AII Locks are Can be used with all bayonet-i extensively used by and will welcome enquiries for the Govt. Debts., Muni post-war period type lamp holders and the first' cipalities, Public cost is the last cost. U tility Cos. and Industry generally HOPKINSON MOTORS Sales Representative : & ELECTRIC CO • LTD PERCY PHILLIPSON Grangeway • Kilbum • London NW6 169 Piccadilly, London, W. I T elephone : R egent 1900 Telephone: Maida Vale 9306/8 Manufactured and Marketed by A member o f the CELESTION LTD. ’stFftCtENCV^ London Road, Kingston-on- Thames. Kingston 5656 June 15, 1945 E l e c t r ic a l R e v ie w 4 7 H.AI.S. “ Holdfast,” the vessel that successfully laid the experimental pipe line across the Bristol Channel, is here seen taking HAIS cable aboard at one of the J. & P. storage sites specially designed and con structed for this momentous operation. Although her carrying capacity proved insufficient when it was decided to enlarge the pipe to 3 in. diam., H.M.S. “ Holdfast” gave valuable assistance in “ Operation Pluto.” Like all the other cable laying vessels employed, H.M.S. “ Holdfast” is equipped with J. & P. Picking-up and Paying-out gear, also designed specially for the job. RELIABILITY W HEN A N D WHERE IT WAS VITAL JOHNSON & PHILLIPS LTD.. C H A R L T O N , L O N D O N , S.E.7 Telephone: Greenwich 3244 (13 lines). Telegrams: "Juno," Charlton. Kent I I P lU h u lli tkd M U J M i M M t M y u & lib p - , , 4 8 E l e c t r i c a l R e v ie w June 15, 1945 DEVELOPMENTS ELECTROLUX IN MEASUREMENT REFRIGERATORS AND CONTROL operate equally w ell W e offer manufacturers and process users a service on problems of measurement and control | . a service based on scientific b y ELECTRICITY, GAS method, technical ingenuity and modern pro duction, covering the field of Idea, Prototype and Manufacture. o r P A R A F F I N .... Having no moving BALDWIN INSTRUMENT COMPANY LIMITED CUMNOR, OXFORD parts9 Electrolux originators and makers of scientific instruments for measurement and control R efrigerators a r e Good silent and free from Stocks of . . . v i b r a t i o n ...... Romac H. T. Terminals are avail able on cards for re-sale in one dozen “ B u ilt-in 99 and Free boxes of 4 ... or in dozen o r gross Iocs for workshop use. Standing Models Price list sent on req u e sr. Enquiries for bulk supplies are invited. w ill be available. I1.T. Terminals Handy, quick - fitting type ; size 7 m m . No baring of wire, no solder or tools required. ROMAC INDUSTRIES LIMITED The Hyde, Hendon, London, N.W.9 E L E C T R O L U X LTD. LUTON BEDS. ROMAC June 15, 1945 E l e c t r ic a l R e v ie w 49 May we ask you to consult us on your Porcelain Design ? Even a small modification can mean easier manufacture and thus reduce cost. June 15, 1945 5 0 E l e c t r ic a l R e v ie w COMPLETED C O N TRACTS include Poona Technical College — Switch board. Enfield Technical C ol lege— Switchgear. Willesden Technical College — Switch gear. Camborne School of Mining—Complete equipment of Laboratory. South East Essex Technical College — Switchgear, Brake gear, Chokes, Condensers. Paddington L.C.C. Technical Part of the complete laboratory installation at the School of Metalliferous Institute Switchgear. Mining, Camborne, Cornwall FOR ELECTRICAL ENGINEERING J h e LABORATORY EQUIPMENT THE HYDE, consult ■ COMPANY LIMITED. LONDON, N.W.9 Manufacturers of Switchboard and Portable Pattern Microammeters Milliammeters Ammeters Voltmeters Wattmeters and Testing Sets MEASURING INSTRUMENTS (PULLIN) LTD. ELECTRIN WORKS, WINCHESTER ST., ACTON, W 3 June 15, 1 9 4 5 E l e c t r ic a l R e v ie w 51 B R I T A N N I C CABLES AN INDEPENDENT COMPANY, MAKERS OF E.H.T. A N D L.T. PAPER M A IN S CABLES, VARN ISHED CAMBRIC C.T.S. M IN IN G TR AILIN G , “ IVER ITE” INSU LATED CABLES A N D TH ER M O PLA STIC CABLES (P.V.C. ;j BRITANNIC ELECTRIC CABLE 4 CONSTRUCTION CO. LTD. IVER BUCKS T elephone: IVER 491 T elegram s ••BRITANNIC, IV ER " “Safetee” Switch - fuses by “Weekes W eekes’ “ Safetee ” Combined Switch-fuses, with interlocked Plugs, incorporate In one unit the advantages of efficient qulck-break switch coupled with the use of Indicating Cartridge Fuses, for protection, and plug-in connectors. Designed to carry and break 50 per cent, in excess of the rated current capacity of the Switch-fuse. Ratings up to 500 Amps, 500 Volts, D.P. or T.P. (supplied weatherproof to order). Enquiries also invited for Switchboards, W atertight Plugs and Sockets and C a rtrid g e Fuses ILWillKCIS (LUTON) LIMITED LUTON, BEDS. London Office : 36-38 KINGS WAY, W.C.2 Telephones: Holborn 1091: Luton 278 STAND ARD T.P. SWITCH-FUSE Branches : Birmingham, Glasgow, Newcastle 52 E l e c t r i c a l R e v ie w June 15, 1945 AUSTIN WAITERS & SON L » MANUFACTURERS OF STORAGE EQUIPMENT Street LigViting C o n t r o l Bins and Shelving single and. double-sided STORAGE RACKS for Small Parts Removable Trays I T I H E forms of control for Street ^ Lighting are many and varied, but now CENTRALISED CONTROL is generally accepted as essential. Sordoviso Street Lighting Control units embodying the Sordoviso non TOOL tilting Mercury Switch with its CABINETS inherent features of non-burning 39" x 18" x IS" contacts, low energising current, Lock and Key silence in operation and freedom from climatic effects, provide a most efficient remote or automatic control with low installation and main tenance costs. If you are contemplating a new scheme or modifications to an exist ing one, the advice of our Technical Staff is always available. We should be pleased to forward, on application, our brochure, “ Con STEEL WORK BENCHES trolled Street Lighting.” 8' 0' x 2' 6' x 2' 8" Two Lockers with Padlock and Key SORDOVISO SWITCHGEAR LTD. Falcon W orks, Loughborough AISTIN WALTERS & SON LTD. LOUGHBOROUGH 3131 Old Trafford, MANCHESTER It June 15, 1945 Electrical Review 53 CHOSEN FOR THE BRITISH MUSEUM • At the British Museum and at the Tate Gallery emergency lighting pro tection is entrusted to Britannia Batteries — a tribute to their complete reliability. These batteries have been installed com plete with special automatic gear. Britannia Emergency Lighting Batteries are also installed in a large number of Cinemas, Electricity Supply Stations and Sub stations, Factories, Large Stores, and other establishments. STATIONARY BATTERIES F O R EMERGENCY LIGHTING BRITANNIA BATTERIES LTD • REDDITCH • W O R C S. A27/43 DARWINS-TOLEDO Export Division DARWINS-TOLEDO OVERSEAS LIMITED, SHEFFIELD. 5 4 E l e c t r i c a l R e v ie w June 15, 1945 b .s .i. KlUkilUII PAT. p e n . PLASTIC PLUGS EASY TO WIRE SECURE GRIP ON CABLE SHEATH OF ANY DIAMETER NO CABLE CLAMPS & SCREWS EXTRA SAFETY IN USE EARTH WIRE LAST TO BECOME DE TACHED IF CABLE IS WRENCHED OUT SELF-ALIGNING CURRENT PINS (Single or double pole fused pins not self-aligning) STANTON & CO, 6 0 MOOR ST, BIRMINGHAM, 4 . m,dl*nDON4E3 o. U llc ini i r VULCANIZERS REPAIRING E. JOINTING E le c tr ic C A B L E S The Harvey Frost (HF) Process of repairing and jointing Electric Cables maintains them in efficient service and extends their life. HF Electric Vulcanizers are specially designed for this w ork and a full range of Moulds is available for Cables of the widest • variety. Heat is automatically con trolled by thermostat, correct tem perature being indicated by pilot light. Write for particulars. HARVEY FROST E. CO. LTD. áilillMMIBTBl <ä\C0MPANY/£* BISHOP'S STORTFORD, HERTS. Telephone : 700 June 15, 1945 E l e c t r ic a l R e v ie w 5 5 r ^ a p m m ^ c «MANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN H O F F M A N N _B E A R I N G S BEARINGS BEARINGS BEARINGS BEARING S BEARINGS HOFFMANN BEARI NGS BEARINGS HOFFMANN HOFFMANN h o f f m a n n W elhproved Parts for Brand-new Needs BEARINGS HOFFMANN BEARINGS BEARINGS HOFFMANN YOU NO DOUBT HAVE MAPPED OUT YOUR COURSE FOR THE HOFFMANN BEARINGS FRESH CONDITIONS BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS WE SHALL SUPPLY THE HIGHEST POSSIBLE GRADE OF Ball and Roller Bearings HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN PAST EXPERIENCE COUPLED TO A PROGRESSIVE OUTLOOK WILL HOFFMANN BEARINGS AID US IMMENSELY-AND YOU ! BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN HOFFMANN BEARINGS THE HOFFMANN MANUFACTURING CO., LTD., CHELMSFORD, ESSEX BEARINGS HOFFMANN HOFFMANN BEARINGS BEARINGS HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN HOFFMANN BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS BEARINGS m m m 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 IGRANIC ELECTRIC C?LTD BEDFORD & LONDON 5 6 E l e c t r i c a l R e v ie w June 15, 1945 The Solder W ire with 3 Cores of Non-corrosive Flux. O Avoids Dry Joints. ^Speedily makes Sound Joints on Dirty or Oxydised Surfaces 0 Always Correct Pro portions of Flux and S o ld e r. 0 No additional Flux re q u ire d . % Approved by Air Ministry and G.P.O. F R E E ‘ ‘ Technical Notes on Soldering' ‘ and samples sent free on request to firms engaged on Government Contracts. M U L T I C O R E SOLDERS, LTD. Commonwealth House, Coal, Air and Water London, W .C.l. Tel.: Chancery 5171/2. Covered Wire Not so silly as it may sound to some of the less technical of us. The coils above , are wound with Nylon covered wire. [ EMTA Nylon is “ built u p ” from a -dibasic acid Will protect your trading and a diamine. Both are derived from phenol or benzol, the latter also from interests NO W and after the war ammonia. Phenol and benzol are by-products Write for particulars of membership to of coal ; ammonia is made by causing The Secretary : J. T. M ORGAN hydrogen from water to unite with nitrogen from the air. Hence coal, air and water The Electrical Machinery produce a wire with a covering 100 times j Traders’ Association more resistant to abrasion than that of \ II ARGYLL ST, OXFORD CIRCUS. other wire in common use. V. & E. Coils L O N D O N , W .l. Tel. : G E R rard 6177 include those of every conceivable type and size within the smaller categories. Write us. If we cannot supply you now, our advice may be useful for after the war. Equipment TRANSFORMERS COILS f o r of Q U A L IT Y up to 3 5 k V A As supplied to ALL SMALLER H.M. Government) * THE TRANSFORMER REQUIREMENTS & ELECTRICAL CO. LTD. TRANSFORMERS AND CHORES Aslrford Works, Asbford Road Sootli Woodford, Loodoo, E.18 V .A E. FRIED LAND Ltd. Lowerhouse H ills, Bollington, CHESHIRE Prices on request Scientific i June 15, 1945 E l e c t r i c a l R e v i e w n M H M j ABSOLUTE DEPENDABILITY.. is the highest standard by which power transmission B.I. for the Mai« can be measured. S r I BRITISH INSULATED CABLES LTD | Hejd Office : PRESCOT. LANCS.. ENGLAND Telephone: PRESCOT 6571. 5 8 E l f c t r i c a l R e v ie w June 15, 1945 "B y the way, Smithson, I want all small steel screws for this contract to be Premier make, as it is most important we use turned from fhe bar screws exclusively. " I know the Premier people carry stocks, so there should not be any delay in getting the sizes you require quickly. W ill you ask Jones to send Premier an order, right aw ay?" W H I T W O R T H A N D B .A . T H R E A D S TURNED FROM THE SOLID BAR London Offi ce : ABFORD HOUSE VICTORIA STATION S.W.I Tel.: Victoria 2433 The PREMIER SCREW & REPETITION CO. LTD., WOOOGATE, LEICESTER. Tel. J69J-6 REPTO N ENGINEERING COMPANY T E N N A N T STREET. BIRMINGHAM, 15. He is the man who has to use the tools you TELEPHONE: MID. 1792/3 provide and he knows their merits. There is TELECRAMS TON STILE a Flextol machine for every job, — Filing, Grinding, Scurfing, Polishing, Flexible Disc Grinding, Screw Driving, Nut Setting, etc. Send for Catalogue No. F 2 z- FIRE A.R.P. ALARM BELLS etc. IRONCLAD WEATHERPROOF AND GAS- AND WATER-TIGHT POWER-DRIVEN HAND TOOLS frgo Trad* Mai TYPES FOR A.C. OR D.C. K ALL VOLTAGES UP TO 250 * M o re P ow er to your elbow * Sole Manufacturers and Patentees : ASSOCIATED FIRE ALARMS FLEXTOL ENGIN EERING CO. LTD LTD. THE GREEN, EALING, LONDON, W.f ‘Phones: EALing 6444/5/6. 'Grams: •• Dominating ", Ealux, London. SUTHERLAND WORKS, ST. ANDREW RD. WALTHAMSTOW. LONDON, E.17 95-13A June 15, 1945 E l e c t r ic a l R e v ie w 5 9 F c t , 4 c a £ e s EC ccPiico C P u y ^ c d e L . It is noteworthy where Tudor ac whether they were installed only yes cumulators are to be found fulfilling terday, or over thirty years ago—as the most important duties. Over 500 many of them were—they are to-day British Power Stations installed functioning with consistent efficiency. Tudor. Many Tudor installations SAFETYLYTE (Patent No. 3 13 2 4 8 ) rank among the largest in the land is the Tudor Emergency Lighting System, which is automatic and in and have an enviable reputation for stantaneous in operation. It is instal led in thousands of schools, hospitals, long-lived reliability. No matter factories and other large buildings The Tudor Accumulator Co. Ltd. 50 Grosvenor Gardens, ACCUMULATORS London, S.W. 1 . S L O a n e 0168/9 WT38b/44 CASCADE w ate r COOLERS o f Robust Construction CASCADE WATER COOLERS Ltd., Brewery Lane, DEWSBURY ¡ h°n3e 7 3 S 6 0 E l e c t r ic a l R e v ie w June 15, 1945 m IS GODWIN PUMPS swITCHGEAR A R E FU LLY GUARANTEED PRESSURt TANK TIP* O.H.P. AUTOMATIC WATER SYSTEM SPECIALISTS IN FUSES. DISTRIBUTION For Estate and Fane Water supplies and Domestic and BOARDS, SWITCH FUSES, SWITCH Industrial purposes. Supplied In capacities from 575/4,240 BOARDS. CONTROL PANELS Imp. G.P.H. for Maximum Suction Lifts up to 22'. W r it e for lists of oomplete range of GODWIN PUMP8 and AUTOMATIC WATER SYSTEMS for Deep and Shallow Wells, to SOLE MANUFACTURERS. H. J. GODWIN LTD. aUENINCTON .... G LOS. Telephone Telegrams: ¡ST. MICHAELS ST. CHESTER.teSi 3763/4 Coin St. Aldwyn SO (S lines) Pumps. Quealn#' LONDON OFFICE-ABFORD HOUSE, WILTON RD..S.W.I Telephone : Victoria 5780 Natural In all Grades and ualltlea. Stove Mlcaa, Plate#, /ethers, Commutator Seg- MIGA!ments, Condenser Films, etc. Moulding, Commutator, Flex ible, Heat-realstlni Qualities, Commutator Rlncs, Spools, MIGANITE Tubes, etc. Mouldlnts of any shape or form, Tubes, Plates. Washers, Sheets In all thicknesses, BAKELITE etc. âlEDlË 8EID TO THE MAIUPAGTUttERS KNIGHTON LANE.BUCKHURST HILL, ESSEX. The BIRMINGHAM MICA Co. Ltd. South Road, Mocklay, Birmingham ELECTRIC HEATING APPLIANCES Telegrams : “ Insulation, Phone, Birmingham.” Phone : Northern 0118. TO YOUR SERVICE ISio* LIMIT * PREC □ □ □ 5 O "MAIN DOLPHIN ENGINEERING CD. LTD. 2 LYTTELTON ROAD, LONDON N.2 . (SPE. 3 4 4 S -7 June 15, 1945 E l e c t r ic a l R e v ie w 61 The capital Sigma» in mathematics , is a symbol m ea n in g 66 the sum of 99 PHILIPS A The Philips emblem» in everyday life. is a symbol meaning the sum of good design . good work man ship and good materials PHILIPS LAMPS * RADSO ★ X-RAY COMMUNICATIONS EQUIPMENT AND ALLIED ELECTRICAL PRODUCTS PHILIPS LAMPS LTD • CENTURY HOUSE • SHAFTESBURY AVENUE • LONDON ■ W.C.2 fi27Dl 62 E l e c t r i c a l R e v ie w June 15, 1945 M.S.M. are specialist manu facturers of tilting type mercury switches suitable for instrument work, domestic and industrial ap paratus and power control gear. THE MERCURY SWITCH MANUFACTURING CO. LTD. WEST DRAYTON, MIDDLESEX E.R.IO & CONTROL e q u i p m e n t Specially design ed “ Dupar" Fully Automatic Air-Break Con tactor Panel for control and pro tection o f 'l 00- 2 0 0 H.P. Pole Change Slip BAKELITE — Ring Motor. MOULDINGS AND Enquiries invited f o r Control ERINOID Equipment for t o a n y TURNINGS all applications. SPECIFICATION FREDERICK W. EVANS LTD. DEWHURST & PARTNER LTD. PLASTIC WORKS INVERNESS WORKS • HOUNSLOW - MIDDLESEX LONG ACRE, BIRMINGHAM 7 T e l: Hounslow 008518 'Grams : Dewhurst, Hounslow Scott/sh Office - 26 Slythswood Sq.. Glasgow, C.2. Tel: Douglas 0097 TELEPHONE: E A S t 1286 & 1287 June 15, 1945 E l e c t r i c a l R e v ie w 6 3 WSC . n D STORAGE BATTERY FOR ALL OTHER i f o r e l e c t r i c t r a c t i o n PURPOSES STORAGE BATTERIES a r e t& efim telu ^re-em in en tf It may not be generally known that D.P. originally stood for “ Dujardin- Plante ’ ’—the name of the battery when it was first introduced in this country in 1888. Nevertheless, the letters D.P. have a very definite significance in the minds of battery users everywhere. They stand for the greatest possible efficiency in battery Design and Performance. % e D.P BATTERY C? LT? BAKEWELL, DERBYSHIRE .... Phone : 8 AKEWELL 81-82 J 148 -London Office : 50 GROSVENOR GARDENS, S.W.I P hone: SLOANE 6255-6_ POCKETS OF CAPACITY Manufacturers are permitted to utilise “ pockets of capacity” in their works as fluctuating service requirements permit for the manufacture of their normal products. But until the war is finally won service requirements still claim absolute priority. For this reason Venners regret their inability to give guaranteed immediate delivery promises for time switches and meters, although no opportunity is missed to reconcile the demands of war and peace. VENNER Time Switches Ltd. KINCSTON BY-PASS RD., NEW MALDEN, SURREY 64 E lectrical R eview Jure 15, 1945 I 3-3 kV. Ellison Truck Switchgear is made in various '9 6*6 kV. types and sizes ■with single or AND 11 kV. duplicate bus bars, on or off load selectors and TRUCK GEAR current ratings of u p t o 1 200 a m p s . n Sa 6 b- SS2 Jtl June 15, 1945 E l e c t r ic a l R e v ie w 6 5 Illustrated is a seven-cored tough rubber sheathed and waterproof cable that is playing its part in helping ships at sea . . . MERSEY CABLES 1 MERSEY CABLE WORKS LTD., LINACRE LANE, BOOTLE, LIVERPOOL. Wires, Cables and Flexibles insulated with rubber, synthetic or thermoplastic material, made in all sizes for all purposes. For quick, safe and economicaljjrepair of commutators and other electrical equipment Westminster Commu tator Cement offers a cheap, efficient, quick method of curing dam aged insulation without holding up the machine for more than half an ^ S T M I N S T E * hour. There is no need to remove the armature VMWJTATC or skim the commutator with a grinder. Dam c e m e n t aged mica can be easily Don’t wait removed and gaps filled until trouble develops before with Westminster Com ordering. With present delays in mutator Cement on the delivery valuable time may be lost spot, making a perma and the machine may remain idle nent repair and saving for several days or weeks. considerable time, money Every user of electric motors should and labour. keep Westminster Commutator Cement Used by Electrical Undertakings outfits handy in case of emergency. A Government Debartments, Lon sound investment I Obtainable direct don Passenger Transport Board, from the manufacturers. National Physical Laboratory, Railway and Shipping Com A complete outfit *1 " 7 /O coats only I / j O panies, C ollieries, Stores, etc. WESTMINSTER LABORATORIES LTD., West Works, PENN, Bucks. 6 6 Electrical R eview June 15, 1945 If your problem is a supply of hot or cold air, investigate the BYLOCK A.M. INDUSTRIAL BLOATER. BYLOCK BLOATERS are on war service, efficiently at work on varions Government contracts and in industry generally. Write for details of types and specifications now. BYLOCK A.M. INDUSTRIAL BLOWER BYLOCK ELECTRIC LTD. Note the careful anchor Ponders End, Middlesex, Eng. ing of all bands to avoid the possibility of breaking away. This methodical care is typical of Collins, Britain’s Premier Elec trical Repair Service, and enables us to guarantee Note the tongue which your satisfaction with ensure* perfect and p erm anent contact- Easy every repair undertaken to fix. Nuts cannot turn. AJ1 sizes from half to two inches in our works. THE DONOVAN ELECTRICAL CO. LTD. BIRMINGHAM 9 COLLINS Electrical Manufacturers and Stockholders Collins Electrical Ltd. Heed Office PORTABLE FLASH TEST 115 Clerkenwell Road London E C 1 This Flash Te st re q u ire d by Holbom 0212-3-4 all making, repairing and ser L 22 St. Albema Piece Upper St. Ialingtmn IV / i vicing electrical equipment.A 4 Cenenbery 3227-8 M i 1,000, 2,000 to 5,000 8 8 ^ 5 A 11 Featheratone Rd. Southall J R h volts. Send for Leaflet Southall 0168 ^ w / a (Q 53) about Rash s s . Testing. C.EX-12 toicell advertising J w x 15. 1945 E l e c t r ic a l R f \ ie w 67 the place is damp and dirty.. this is vour motor. It is the Parkinson " KJosd ” tan- unusual motors, can be obtained with cookd Motor. It has the virtue of remarkable ease and speed. keeping cool while keeping out damp W ith the Parkinson flow production system and dust. And it does it exceptionally standardised parts and sub-assemblies are vefl. Being a Parkinson Motor that is not alw ays kept stored and ready. Final assembh- enraordinarv. But w hat is extraordinary of any required type is quickly completed is that the special motor is one of over if the motor is not a stock item. In this 2.000 tvpes in the standard Parkinson way Crompton Parkinson can give you a range. It. and other very much more service that is as good as the motor itself CRompion^pflRKinson LIMITED ELECTR» V CTORIA EMBANKMENT. LONDON. W.C.2. a n d Branches G 6 8 E l e c t r ic a l R e v ie w June 15, 1945 MAINS RESTORED BATTERY RECHARGED CONSTANT VOLTAGE RECTIFIER EQUIPMENT fsoï uAe u /M i ù e M e à ie é In addition to compensating for load variations, the “ W estat” Constant Voltage Rectifier Equip ment will maintain the output voltage between limits of ± 1 % at constant load for mains variations of ± 10%. After a mains failure, when Typical 1,203 watt “ W estat the battery voltage is low, the “ W estat” auto supplied to the Southern matically provides a fairly heavy charge, which Railway for floating batteries tapers as the voltage reaches the specified level. WESTINGHOUSE W rite for descriptive pamphlet No. ll.L WESTINGHOUSE BRAKE & SIGNAL Co., Lt d Pew Hill House, C hi ppe n h a m , Wi I bs. June 15, 1945 E l e c t r ic a l R e v ie w (Supplement) 69 TAKE THE LONG VIEW s p e c i f y CRompTon p c t p e ^ CABLES CROMPTON PARKINSON LIMITED, ELECTRA HOUSE, VICTORIA EMBANKMENT. LONDON, W.C.2 Telephone TiM ple Bar 59// Telegrams C tomcat k £ strand. London 70 {Supplement) hLfcCTRÏCAL K tV iE W June 15, 1945 ELECTRIC UNIT HEATERS A w a r t i m e developm ent w h i c h h a s c o m e t o s t a y 5 to 20 k W IN THIS TYPE Numerous works and factories have been comfortably, conveniently and economically heated with these units. They need no floor space, no boiler house, no fuel, no labour. In relation to heat output they are of the smallest size and use the The 2f kW UNIT least metal. just as simple to install, easily Lowest capital cost. adjustable for direction of warm Low operating costs. air flow. Runs almost noise Each unit can be worked inde lessly. Size approx. 9" x n f " . pendently with or without Finished metallic bronze cellulose. thermostatic control. Advt. of The General Electric Co. Ltd., Head Office, Magnet House, Kingstoay, London, W .C.a. June 15, 1945 Electrical Review (Supplement) 71 •••CLASSIFIED ADVERTISEMENTS FriHax-’ *or insertion in the following REPLIES TO advertisements published under a ; lssue are accepted up to First Post on Box Number if not to be delivered to any particular ; g g jaay» at Dorset House, Stamford Street, London, firm or individual should be accompanied by instruc- ; tions to this effect, addressed to the Manager of the ; THE CHARGE for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in ; is zj- 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 ; 30/- per inch, with a minimum of one inch. Where disclosed. All replies to Box Numbers should be ; the advertisement includes a Box Number there is addressed to the Box Number in the advertisement, • an additional charge of 6d. for postage of replies. c/o ELECTRICAL REVIEW, Dorset House, Stam- ; SITUATIONS WANTED. — Three insertions ford Street, London, S.E.l. Cheques and Postal ; under this heading can be obtained for the price of Orders should be made payable to ELECTRICAL ; two if ordered and prepaid with the first insertion. REVIEW LTD. and crossed. ; Original testimonials should not be sent with applications for employment. OFFICIAL NOTICES, CITY AND COUNTY OF Kl N GSTON-U PON-H U LL TENDERS, ETC. ^TENDERS are invited by the Electricity Department -1- for the supply and erection of two là million gallons HAZEL GROVE AND BRAMHALL URBAN per hour vertical spindle Electric Motor-driven Pumps, DISTRICT COUNCIL with usual controls, to work against a head of approxi mately 55 ft. Tender forms may be obtained from General Electricity Department Manager. Ferensway. Kingston-upon-Hull, upon payment of £ 1 deposit (returnable on receipt of bona-fide tender). Copies 10s. each (not returnable). Tenders to be sub Contract No. S.G. 11 mitted by 13th July, 1945, in accordance with instructions on form of tender. 2159 rflENDERS are invited for the supply and delivery of A THREE 250-kVA TRANSFORMERS fitted with externally operated off-load tap changing gear. Copies of the specification may be obtained from the SITUATIONS VACANT ___ Chief Electrical Engineer and Manager. Electricity Offices, Chapel Street, H azel Grove, Cheshire, on paym ent of a None o1 the vacancies for women advertised in these deposit of £ 1 Is., which am ount will be refunded on colum ns relates to a wom an between 18 and 40 unVess such receipt of a bona-fide tender. wom an (a) has living with her a child of hers under the Duplicate copies of the specification may be obtained age of 14, or (6) is registered under the Blind Persons Acts, on payment of the sum of 10 s. 6d., which sum is not or (c) has a Ministry of Labour permit to allow her to returnable. obtain employment by individual effort. Tenders, enclosed in plain sealed envelopes endorsed "Contract No. S.G. 11,” should be addressed to the BATTERSEA BOROUGH COUNCIL undersigned and be received not later than 12 noon on Saturday, 30th June. 1945. General Manager and Engineer, Electricity Undertaking The Council do not bind themselves to accept the lowest or any tender. fTlHE Council invite applications for the appointment of F. E. CAPPER. A General Manager and Engineer of their Electricity The Council House. Clerk of the Council. Undertaking from applicants who are Corporate Members Hazel Grove. Cheshire. of the Institution of Electrical Engineers and experienced 6th June. 1945. 2137 in the management and administration of an Electricity Undertaking. The Council operate a ” Selected Station” of a present capacity of 50,000 kW. The salary will be M A ESTEG URBAN DISTRICT COUNCIL in accordance with the Agreement made by the National Joint Committee of Local Authorities and Chief Electrical Electricity Department Engineers, dated 9th July, 1941, at present approximately £1,675 per annum. Full salary will be paid from com menceraent of service. mENDERS are invited for the supply, laying and The appointment will be subject to the provisions of A jointing of Two L.T. Feeder Cables. Copies of the the Local Government Superannuation Act. 1937. specification, form of tender and conditions of contract Applications must be made on a form which contains may be obtained upon application to the Electrical full particulars to be obtained from me. and which must Engineer and Manager, Electricity Departm ent, 3o. Com reach me not later than 10 a.m. on Thursday, 28th June, m ercial Street. Maesteg, Glam. T t 1945.’ Tenders, to be sealed and endorsed Tender for L.l. Canvassing directly or indirectly will be a disqualification. Feeders,” must be delivered to the undersigned not later R. G. BERRY. than Thursday. 21st June, 1945. Envelopes must not Town Hall, Town Clerk. bear any name or mark indicating the sender. , Lavender Hill. Battersea. S.W .ll. The lowest or any tender will not necessarily be accepted. 31st May. 1945.______2116 4 KING-DAVIES. Lloyds Bank Chambers. ' Clerk of the Council THE GALLOWAY WATER POWER COMPANY Talbot Street. Maesteg. Glam. ______‘ Shift Charge Engineer W H ITT INGHAM MENTAL HOSPITAL \ PPLICATIONS are invited for a permanent appoint- ment as Shift Charge Engineer at Kendoon Power nriH F ( Vim rn itf.e e of Visitors of the Whittingham Mental Station. 1 H osnS lnelr Preston. Lancashire, invites tenders Salary and conditions in accordance with N.J.B. Agree ,™. SSJ'eni Wiring of certain Farms and Buildings far the Electrical ghton Green Lane, which premises ment. Class C. Grade 8 (commencing salary £329 per srtuate in or near H aigM on^ q( ^ annum). Hydro-electric experience not essential, but Shift may be b7 0f contract may be obtained on Charge experience with Grid operation desirable. flcation and condi j r.jgne(j. Tenders should be re- No application considered unless definite prospects of applrcation to the „ ^ chairman of the Visiting Com- early release. The Ministry of Labour and National tumed._ addressed t j en LEYTON BOROUGH COUNCIL BOROUGH OF LUTON E LE C TR IC ITY UNDERTAKING Chief Demonstrator Appointment of Technical Assistant PPLICATIONS are invited for the position of Chief A PPLICATIONS are invited for the above post. The A Demonstrator (female) in the Council's Electricity -*1*- majority of work will be in connection with the Undertaking. Corporation’s Generation Station, and the candidate will Candidates must have a good general education, hold be required to give technical assistance in other sections u Diploma in Cooking and/or Electrical Housecraft, and of the undertaking. Applicants must have sound experi have a thorough knowledge of electrical domestic appli ence in the design, layout and operation of modern power ances. They must be competent to conduct lecture- stations. Constructional and industrial experience will be demonstrations and advise consumers on the selection an advantage. and use of electrical apparatus. The salary is £250 per annum, rising by annual in Preference will be given to persons who are corporate crements of £15 to a maximum of £300 per annum, plus members of the Institution of Electrical Engineers and/or war bonus, at present £48 5s. per annum. the Institution of Mechanical Engineers. The successful candidate will be required to pass a The conditions of employment will be in accordance medical examination by the Council’s Medical Officer of with the National Joint .Board Agreement, and the salary Health, and the appointment will be subject to the Class J, Grade 8 (at present £469 rising to £491 per provisions of the Local Government Superannuation Act, annum). 1937. The appointment will be subject to the provisions of Applications, in the candidate’s own handwriting, the Local Government Superannuation Act, 1937, and stating age, qualifications, experience, position with the successful candidate will be required to pass a medical regard to National Service, and when able to take up examination and to contribute to the Corporation's Super duties, accompanied by copies of two recent testimonials, annuation Scheme. to be sent to the Borough Electrical Engineer and Applications, stating age, details of training and ex Manager. Electricity Offices, Cathall Road, Leytonstone, perience. and accompanied by copies of three testimonials, E .ll, not later than first post Friday, 6th July, 1945. must be delivered not later than Monday, the 25th June. Canvassing in any form will be a disqualification. 1945, to : — D. J. OSBORNE. C. T. Melling, M.Sc.Tech., M.I.E.E., A.M.I.Mech.E.. Town Hall, Town Clerk. Borough Electrical Engineer, Leyton, E.10. 2119 Borough of Luton Electricity Undertaking, St. Mary’s Road, Luton, Beds. MALVERN URBAN DISTRICT COUNCIL Canvassing, either directly or indirectly, will disqualify. The Ministry of Labour have given permission under Appointment of Chief Electrical Engineer the Control of Engagements Order, 1945, for the adver tisement of this vacancy. PPLICATIONS are invited for the appointment of W. H. ROBINSON. A Chief Electrical Engineer, at a salary in accordance Town Hall. Luton. Beds. Town Clerk. with the Agreement made by the National Joint Com June, 1945. 2145 mittee of Local Authorities and Chief Electrical Engineers, which on the present assessment of the Undertaking, is £765 per annum after two years’ service. For the first ASSOCIATED MUNICIPAL ELECTRICAL ENGINEERS year of service, the salary will be 85% of that figure and (Great Britain and Ireland) for the second year 92£%. and the Applicants should have experience of Generation, ELECTRICAL POWER ENGINEERS’ ASSOCIATION. E.H.T. and L.T. Distribution, design and execution of all development works, sales organisation, and of the general NOTICE administration and control of an Electricity Supply Undertaking. The appointment will be subject to the provisions of BACUP CORPORATION the Local Government Superannuation Act, 1937, and the successful candidate will be required to pass a medical Appointment of Engineer and Manager examination. Applications, stating age, qualifications and experience, HHHE Standing Joint Committee of the above Associa- together with information as to position in relation to tions desire to point out that the above advertised National Service Acts and Essential Work Orders, and post is not in accordance with Clause 10 of the Agree earliest date applicant could commence duty if appointed, ment made by the National Joint Committee of Local accompanied by copies of not more than three testimonials, Authorities and Chief Electrical Engineers (Electricity must be delivered to the undersigned not later than Supply Industriy) under which clause the latest available Friday, the 29th June, 1945. data of output indicates a commencing salary of £700 per J. BULMAN, annum rising to £824 per annum. The Council House. Clerk of the Council. ALL ENGINEERS. WHETHER ENGAGED IN THE Malvern. ELECTRICITY SUPPLY INDUSTRY OR NOT. ARE 8th June. 1945. 2154 URGENTLY REQUESTED NOT TO APPLY FOR THE POST NOW BEING ADVERTISED. AND IF APPLI BOROUGH OF BACUP CATION HAS ALREADY BEEN MADE, IT SHOULD BE WITHDRAWN. W. ARTHUR JONES. A.M.I.E.E., Appointment of Borough Electrical Engineer Secretary. Standing Joint Committee A.M.E.E.-E.P.E.A. PPLICATIONS are invited for the appointment of 2153 A BOROUGH ELECTRICAL ENGINEER at a salary of £600 per annum rising by annual increments of £25 to A PPLICATIONS are invited for the position of Junior a maximum of £650, plus cost of living bonus (at present Assistant Mains Engineer, who must be capable of £59 19s. 4d. per annum) and car allowance. superintending the installation and maintenance of high The appointment will be subject to the provisions of the voltage and low voltage mains and of static substation Local Government Superannuation Act, 1937, and the plant. Applicants must have had a proper theoretical successful applicant will be required to pass a medical and technical training and practical experience, and examination. possess initiative. A knowledge of drawing and the prin Applications, giving details of qualifications, experience, ciples of estimating will be an advantage. Salary will be position with regard to military service and date of in accordance with Grade 10. Class H. of the N.J.B. availability to take up duty, together with copies of two salaries schedule. The successful candidate will be re recent testimonials, should be sent to the undersigned not quired to pass a medical examination and contribute to later than the 3rd July. 1945. VeT u poratlon’s Superannuation Scheme. The Ministry L. STOTT. of Labour and National Service have given permission, Municipal Offices. Town Clerk. under the Control of Engagement Order, 1945. for Stubbylee Hall, the advertising of this vacancy.—P. Philip. M.I.Mech.E.. Bacup. M.I.E.E., City Electrical Engineer, Dudhope Crescent 8th Junev-1945. 2152 Road, Dundee. 2144 June 15, 1945 E l e c t r i c a l R e v ie w (,Supplement) 73 \ SSI ST ANT Manager (service department) required for T ARGEST manufacturers of all types of kettle replace- i u w«1} ,now? ]'adl° manufacturer. London area. Sound ment elements, electrical spirals and electric iron technical knowledge of radio and television, experience in elements are desirous of inviting applications from suitable administration and record. Applications from Class “A” gentlemen, over 51 years of age only, as Sole Representa men invited only. Write, stating age and full particulars, tives calling on public utility organisations and electrical «r r> o0X A.K. Advg., 212a, Shaftesbury Avenue. trades generally. Attractive terms, excellent prospects \V.C.-. 2113 for progressive representatives. Applications, detailing D ULL Motors (E. R. & F. Turner Ltd.. Ipswich) invite past experience, territory worked, to Box 2136, c/o The applications for the post of Manager of their Birming Electrical Review. ham Office. Applicants m ust be electrical engineers with .Iv. Electric Ltd. invite applications for vacancies for •outside selling experience, and preferably recent know M Designer-Draughtsmen, over 51 years of age or out ledge of the Midlands area. Applications, which will be side present engagement restrictions only. Applicants treated in confidence, should be addressed to the Secretary. should have had previous experience in design and develop 2155 ment of electrical accessories. Please write, giving age. OUYER required for radio and electrical instrument experience and salary required, to—M.K. Electric Ltd.. manufacturer. Permanent post to suitable applicant. Wakefield Street. Edmonton. N.18. 2121 Previous experience essential. Write, giving age, salary LD-established Export Firm require the services of an and particulars—Box 2122. c/o The Electrical Review. O experienced and reliable Buyer well versed in the ABLE Tester required to take charge of rubber cable electrical trade and shipping.—Box 2103, c/o The Elec C test room in modern cable factory. Applicants must trical Review. be conversant with the complete testing and examination “DL A N N IN G and Progress Engineer required by Bir- of all types of power and small cables and flexibles. Apply, mingham firm. Duties cover die production, for drop giving full particulars of qualifications, experience, salary forgings, extrusions, pressure castings, with some develop required, etc., to—Box 2114. c/o The Electrical Review. ment and experimental work. First-class knowledge of recording, tabulating filing systems necessary. Salary £350- /BOUNTY Borough of Brighton Electricity Undertaking : £450 p.a. according to ability. Applications, which must ^ Assistant Distribution Engineer. Applicants must be in writing, stating date of birth, full details of qualifi be qualified electrical engineers with sound technical train cations and experience (including a list in chronological ing and m ust have had experience on A.C. and D.C. order of posts held), and quoting Ref. No. 1094, should be systems in (1 ) laying, jointing and testing of high and addressed to the Ministry of Labour and National Service. low voltage cables; (2) location of faults, and (3) methods Appointments Office. 237,Broad St.. Birmingham. 1 . 2127 of change-over of supply. Salary is in accordance with N.J.B. Schedule. Class ‘\T.'’ Grade 9. at present £382 “PRODUCTION Manager wanted for factory in Lanark- per annum. Appointment will be subject to provisions of shire manufacturing domestic electrical appliances the Local Government Superannuation Act. 1937, and and employing 500/600. Applicant must have experience selected candidate will be required to pass a medical in up-to-date mass production methods. Full particulars, examination. Age limit 40. Write, quoting D.1254XA. stating salary expected, etc.. in confidence. Address— to Ministry of Labour and National Service. Central (T. 0661. Wm. Porteous & Co.. Glasgow. 7177 & S.) Register. Room 5/17, Sardinia Street. Kingsway. /QUALIFIED Illuminating Engineers required on out- London. W.C.2. for application form, which must be side staff by an established and well-known company returned completed by 7th July. 1945. 2115 covering commercial and industrial fields. Vacancies occur T\RAUGHTSMEN required (after the present restric- in districts throughout Great Britain. Applications from tions of employment are removed) by leading manu men over 51 years of age only, stating experience, tech facturers in London area, for design department working nical qualifications and salary required. Good prospects on Radio and Television equipment. Previous experience for the right men. W rite to—Box 41, c/o Pool’s, Ald- essential. Good prospects. Write, stating age and full wych House, London, W.C.2. 2146 particulars to—Box 7247, A.K. Advg., 212a, Shaftesbury EQUIRED. Operation Foreman for shift duties in Avenue. W.C.2. 2081 R modern H.P. boiler house. Must be accustomed to FFICIENT Lady Bookkeeper, with knowledge of large water-tube units of modern design, and must be typing.—Box 2104. n/o The Electrical Review. good disciplinarian. The position is permanent and pen E sionable for suitable man. Wage 28.67d. per hour, rising "C'LECTRICAL wholesalers require Trade Counter Assis- to 29.67d. per hour when fully proficient. Applicants tant (must be under 18 or over 51). Must be con must state age and if married. The housing situation in versant with all types of electrical material for installation the district is acute, and if the successful applicant is purposes.—London Electrical Co.. 92. Blackfriars Road. separated from his family he will be paid 24s. 6d. lodging S.E.l. 24 allowance for a limited period whilst maintaining two “C^XPERIENCED Armature Winder wanted Tor India. homes. Applications should be addressed to—The City £40 per month plus 10% of concern's annual profit. Electrical Engineer. Gloucester Corporation Electricity Four years’ term. Passages paid. Leave on half pay. Dept.. Commercial Road, Gloucester. 2017 Desirable features: Sound mechanical sense; possess snaps ALESWOMAN required for electrical showroom of own heavy mill or textile jobs rewound: good health; S (London. W.C.). Full particulars wages, etc., to— unmarried; age 25-35: had own wiring business: under Box 2076, c/o The Electrical Review. stand quoting. (1944 concern’s profits were £7.500.) Write HHECHNICAL Assistant required for sales and to super- —Box 7108. c /o The Electrical Review. vise small department dealing with buying, material ARNHAM Gas & Electricity Company : Mains Assis control and progress planning. Write, giving particulars of F tant. Applicants must be qualified electrical engineers experience, salary, etc.. to—The Manager, Cantie Switches and be experienced in the erection and maintenance of Ltd.. Northgate Works. Chester. 2141 substations and in the laying, jointing and maintenance TECHNICAL Sales Engineer required, must be fully of E.H.T.. H.T. and L.T. distribution systems, under conversant with transformers, and a sound connec ground and overhead. Salary £300 p.a., plus £62 10s. tion. Apply—Managing Director. Yorkshire Electric Trans w.b. Pension scheme in operation. Age limit 40. Write, former Co. L td .. Empire Works, Thornhill, Dewsbury. 2147 quoting D.1260XA. to Ministry of Labour and National Service. Central (T. & S.) Register. Room 5/17. Sardinia fTIEST Gear and Maintenance Engineer required (after St.. Kingsway. London. W.C.2. for application form, which J- the present restrictions of employment are removed) by manufacturers in S.E. London. Experienced in diag must be returned completed by 25th June, 1945. 2128 nosis and repair of electronic test and measuring equip EAD Foreman required for electrical instrument ment. Capable of designing simple jigs and fixtures. H assembly department. Capable trainer of female Write, giving full details age and experience to—Box 7251. labour, experienced with modern production methods, not A.K. Advg., 212a, Shaftesbury Avenue. W.C.2. 2082 afraid of work. Good prospects to right man. Particulars TYTORKS Manager required for firm in the Midlands of past experience, age and salary, and if disengaged. manufacturing all varieties of resistances and heat Box 2085, c/o The Electrical Review. ing elements, employing 150/200. Write, giving full AMP Factory Manager. Required for the North, a particulars of experience, age and salary required.—Box L Works Manager with technical experience and executive 2124, c/o The Electrical Review. ability. The factory is small, \yith first quality proluction. YTTORKS Manager required for manufacturers of elec- Apply in confidence, with full particulars of qualifications, ▼ * trical accessories. West London area. Must be a experience and salary required. Box 2024, c/o The Elec very fully experienced man on production, sound know trical Review. . ledge of machines and press tools, time and motion study, ONDON manufacturer of electrical accessories wishes rate fixing, production control and all branches of general I J to appoint Designer-Draughtsmen. over 51 years of works management; 300 employees. Preference given to age or outside present engagement restrictions only. man experienced in precision press parts and mass pro Positions offered have good prospects and will carry good duction methods for high grade products. Reply, stating salaries Please give age. experience and salary required. age. experience and salary.—Box 2069. c/o The Elec —Box 2120. c/o The Electrical Review. trical Review. 74 (Supplem ent) E l e c t r i c a l R e v ie w June 15, 1945 TJ'LECTRICAL Engineer (56), qualified, experienced all APPOINTMENTS FILLED branches, 38 years, desires change. Consulting, Dissatisfaction having been so often expressed that un planning or supervision. Salary about £500. Free after successful applicants are left in ignorance of the fact that Aug. 20th.—Engineer, 1, Crescent Road, N.15. 7180 the position applied for has been filled, may we suggest LECTRICIAN-Plumber-Jointer (30), experience in all that Advertisers notify us to that effect when they have E classes of cable jointing up to 1 1 kVA, willing to arrived at a decision? We will then insert a notice free train for super tension work.—Box 7184, c/o The Electri of charge under this heading. cal Review. Ç10NGLET0N Borough—Electrical Engr. and Manager. NGINEER, B.Sc., A.M.I.E.E., age 38, holding senior E administrative position in Indian sales organisation of British firm manufacturing motors, generators, trans SITUATIONS WANTED formers, switchgear, etc., desires change post-war to senior CCOUNTANT-Secretary (36), experienced administra position in England, preferably one involving export A tion and control all aspects accountancy and costing management.— Box 7142, c/o The Electrical Review. engineering industry, seeks progressive position. Southern OREMAN-Electrician desires change. All classes of or Eastern Counties preferred. Capable organiser, compre F contracting and maintenance. Box 7181, c/o The hensive knowledge office organisation and management, Electrical Review. preparation monthly and periodical accounts. Exempt M.S. LUORESCENT Lamp Auxiliaries. Design and Pro Free one month.—Box 7165, c/o The Electrical Review. F duction Engineer requires change, take full charge. DVERTISER, free July, seeks appointment Southern —Box 7149, c/o The Electrical Review. A England, 20 years’ experience as Chief Engineer or RAD.I.E.E., Triple Finalist of City and Guilds. P.M.G. Foreman, covering selection, installation, maintenance, G Cert. (33), experienced installation, maintenance, lec etc., of large works, hotels, etc.. plant. Excellent refs, turing, research, etc. Any offer (technical or commercial) for ability and organising qualities, first-class technical given consideration.—Box 7139, c/o The Electrical Review. qualifications. Last 5 years civilian electrical instructor EAT Treatment. Keen man (39) seeks responsible to R.A.F. ; 50 years of age.—C. Hawkes, 42, Herbert H position, exp. modern processing all types steel, Road, Sompting, W orthing. 7171 micro-structures, testing, labour control, etc., used to DVERTISER. 25 years’ experience of mechanical overcoming technical problems.—Box 7174. c/o The Elec A design of electrical machinery and 3 years on tech trical Review. nical publications, seeks change. Write—Box 7187, c/o IGHLY-qualified Chartered Mechanical Engineer (42), The Electrical Review. H seeks change. 25 years’ elect, and mech. experience, LL-round Electrical and Radio Engineer, over 17 years' ten years executive position on design, experiment and A practical experience in all branches of trade, good production of power-driven food-preparing and special technical education, well equipped, seeks service agencies purnose machines.—Box 7148, c/o The Electrical Review. in North-west England, full or part time.—Box 7151, c/o LANT and Maintenance Engineer (44), A.M.I.E.E.. The Electrical Review. P comprehensive experience, desires responsible position. N Electrical and Mechanical Engineer (34), with 20 —Box 7189, c/o The Electrical Review. A years’ varied experience, including six years’ ap OSITION as General Manager or Works Manager with prenticeship. design, manufacture and repair of electrical P first-class record in medium and light engineering machinery, plant running and maintenance, planning, tool production. Well versed in administration and organisa design and production of light electro-mechanical pro tion of labour. Capable of and experienced in re-organisa ducts, seeks posf offering opportunities for advancement, tion. Present salary £1.200. London district.—Box 7154. A.M.I.E.E.—Box 7191, c/o The Electrical Review. c/o The Electrical Review. . UYER, A.M.P.O.A., experienced in present-day con ESPONSIBLE executive position required, offering B ditions. desires change, preferably with company R attractive prospects. Present Sales Manager (30). manufacturing scientific electrical instruments, electricity with good connections and wide experience of sales, pro meters or electrical apparatus. At present in London duction, staff control and administration. Midland area area, but prepared to work anywhere in Southern England. preferred. Please indicate salary and position in full.— —Box 7170, c/o The Electrical Review. Box 7166. c/o The Electrical Review. HIEF Clerk (38). 10 years present post, electricity ESPONSIBLE position required by Engineer with C supply, seeks appointment, release obtainable.—Box R progressive company. 17 years’ electrical industry, 7134, c/o The Electrical Review. experienced works installations, production, sales, com T^ESIGNER-Draughtsman, with over 15 years’ experi- mercial. office administration, at present representing ence on the design and development of industrial and large Midland electrical engineers. London or south.— domestic cooking and heating appliances, seeks responsible Box 7183. c/o The Electrical Review. position with prospects.—Box 7186, c/o The Electrical C ALES «Engineer (45) requires position, available in two Review. ^ m onths; 20 yrs.’ experience, electrical and mechanical. “PVOMESTIC Electric Heating and Cooking Appliances. Considerable pre-war turnover and connection, first-class Engineer, 25 years in all its branches, desires res testimonials.—Box 7138. c/o The Electrical Review. ponsible post.—Box 7193, c/o The ElectricaJ Review. QALES. Technical Sales Engineer (50) wishes to repre- T^RAU G HTSM A N, G.I.M ech.E., age 23, studying elec- ^ sent manufacturer of transformers, heating and cook ■ U trical engineering, 3rd year, requires experience, ing equipment or resistances, in London and South. Good preferably practical.—Box 7185, c/o The Electrical connection for approved equipment. Min. rem. £500. Review. Own car.—Box 7113, c/o The Electrical Review. T^LECTRICAL and Mechanical Engineer, A.M.I.E.E., OUBMERSIBLE motor-driven borehole pumps. Chartered comprehensive experience power and lighting, design ^ Electrical and Mechanical Engineer, skilled in design and installation, costing and complete administration, and manufacture, wishes contact pump manufacturers desires position with progressive industrialist or consul interested in developing sizes. 500 to 120,000 g.p.h.—Box tant.—Box 7173, c/o The Electrical Review. 7130. c/o The Electrical Review. LECTRICAL Engineer, B.Sc. (1st Class Hons.), seeks ELDING Foreman, position required. 16 years’ ex E progressive position. 4 years’ apprenticeship and 5 W perience sheet metal fabrication and light structural years’ experience in installation, design and development work, good disciplinarian, de-reserved. Home Counties or of electrical machines and control gear, including elec South preferred.—Box 7144. c/o The Electrical Review. tronics.—Box 7194, c/o The Electrical Review. OUNG Electrical Engineer, widely travelled, at present LECTRICAL Engineer, experienced on installation of Y holding responsible position abroad, could be free for E electric melting furnaces, high frequency induction re-engagement, inducement offering, in the U.K. or on site heating plant and works maintenance, seeks post with early 1946. Good education and technical training, excel prospects.—Box 7192, c/o The Electrical Review. lent references. Wide experience in executive situations LECTRICAL Engineer, Grad.I.E.E., 14 years’ experi home and abroad on installations, maintenance, repairs to E ence in manufacture and design of control switchgear electrical and mechanical equipment, steam and diesel having complicated circuits, lifts, ventilation and small engines, planning, layout. Any employer requiring really generating plant, anxious to hear of permanent executive keen young engineer, preferably for service overseas, post in London. Excellent education, initiative, ideas, should write for further details to—Box P.368, 19/21. writing ability, languages.—Box 7114, c/o The Electrical Corporation Street. Birmingham. 2. 2040 Review. V O U N G man (35), Y .M .P., 18 yrs.” practical experience LECTRICAL Maintenance Engineer, twenty years’ ex -*- in printing trade, wishes to contact industrial or E perience radio transmitting equip., automatic manufacturing concern which desires to install its own machinery, all types of electrical equip.—Box 7153, c/o printing plant. Write—133, Browns Lane, Coventry. 7168 The Electrical Review. OUNG, progressive Electrical Engineer, having a large LECTRICAL Engineer (42), with wide experience in Y connection throughout Northern Ireland, would like E design and installation of works power plant, requires to get in touch with manufacturers of domestic and indus Dost in London. Extensive drawing office exDerience. trial electrical appliances and accessories, with view to Technical qualifications to A.M.I.E.E. standard. Free representing them in this area.—Box 7190, c/o The Elec shortly.—Box 7188, c/o The Electrical Review. trical Review. June 15, 1945 E l e c t r i c a l R e v ie w ( Supplement) FOR S A LE GEORGE COHEN, SONS & CO. LTD., for PRe^rlctionVj!}a r>an^ s^!}‘ng hereunder must observe the Restriction of R esaie 0 rd er_ s R & Q 19 43 95S GUARANTEED ELECTRICAL PLANT. BLACKBURN CORPORATION ELECTRICITY UNDERTAKING MOTORS. GENERATORS. Plant for Disposal SWITCHGEAR. FpENDERS are invited for the purchase and removal etc. J- from site of REDUNDANT PLANT, comprising : 1 AveiT 50-cwts. Platform Weighing Machine removed from narrow gauge railway; platform 4' 6" x 4 . scale from 1 lb. to 50 cwts. WOOD LANE, LONDON. W.12. 3 12 0 -kVA British Electric Transformers, 6.6 /2.1 kV. Telephone: Shepherds Bush 2070 1-phase, oil-immersed transformers. Indoor pattern, and with terminals suitable for V.I.R. connections through porcelain bushes. Date of purchase 1920. STANNINGLEY, NEAR LEEDS. 1 75-kVA Transformer, oil immersed. Telephone: Pudsey 2241. 2 50-kVA .. air insulated. Established 1834. 1 25-kVA .. oil immersed. 27 2 10 -kVA 3 6-kVA 2 45-kVA SOME All suitable for V.I.R. connections. 2.000/220/110 G-POWER UNITS volts, 1 -phase. from Stock Secondhand Meters 509 (various manufacturers). 2£amp., 230v. A.C. ordinary. 3-kVA 450 .. .. 5 am p.. 230 v. A.C. ordinary. Self-cont., Semi-portable Petrol Alternating Sets. 76 (Aron). 10 am p., 230 volts A.C. prepaym ent. 10-kVA Semi-portable Welding Sets. A.C. or D.C. All in good condition and ready for further service. 30-kVA Particulars and forms of tender may be obtained on appli Petr./ParafF. Altemat. Set. dir. coupl.. lightweight. cation to R . H. H arral, M .I.E .E ., Electricity Offices. 50-kVA Jubilee Street, Blackburn. Petr./Paraff. Altern. Set, rad. cool., semi-port. CHAS. S. ROBINSON. Town Clerk. Several others. 2080 Any “ Special Duty *’ Machinery supplied to your requirements at short notice. COUNTY BOROUGH OF PRESTON THE ELECTROPLANT CO. Preston Institution. Fulwood (Est. 1912). PALACE OF ENGINEERING. WEMBLEY, MIDDX. FERS are invited for the purchase and removal of 2134 0 Fthe following redundant Steam-driven Generating Sets: ELECTRIC MOTORS AND DYNAMOS 1. 11-kW Beiliss/Crompton D.C. Generating Set. 18 b.h.p.. vertical single - cylinder Steam Engine, pressure 110 lbs./sq. in., speed 625 r.p.m .. direct E hold one of the largest stocks of New and Second coupled on C.I. bedplate to Crompton & Co. Ltd. W hand Motors. Secondhand machines are thoroughly 11-kW Generator, 220 volts. overhauled. Inspection and tests can be made at our 2. 33-kW Beiliss/Lumdell D.C. Generating Set. 50/55 Works. b.h.p., vertical compound Steam Engine. 500/550 r.p.m.. pressure 1 1 0 / 1 2 0 lbs./sq. in., direct For Sale or Hire. Send your enquiries to :— coupled on C.I. bedplate to “ Lumdell ” 33-kW D.C. Dynamo. 220 volts. _ _ BRITANNIA MANUFACTURING CO. LTD.. 3. 55-kW Ashworth & Parker/Mather & Platt D.C. 22-26, BRITANNIA WALK. Generating Set. vertical compound Steam Engine, pressure 125/130 lbs./sq. in., speed 630 r.p.m.. CITY ROAD. LONDON. N.I. direct coupled on C.I. bedplate to Mather & Platt Telephone : 5512-3 Clerkenwell. 13 55-kW D.C. Dynamo. 220 volts. Offers to be sent to the Master, Preston Institution. BURDETTE & CO. LTD. Fulwood. , ,, The Corporation do not bind themselves to accept the Stock highest or any tender. Reconditioned A.C. and D.C. Motors and Starters Equal to New. W ATER TU B E BOILERS IN STOOK STONHOUSE STREET. CLAPHAM, S.W.4. Day and night service. MACaulay 4555. Two 25.000 lbs. evaporation, 175 lbs. W.F. ______17 Three 20.000 lbs. •• i" One 12.000 lbs. P?' " BRASS BARI WHAT OFFERS? 8 Se 9/io.ooo ibss: :: ~ . :: Especially Drawn for Electrical Components. Best Commercial Quality. m ^ apip^n?PVdvesnCGe“efatbingk Setek 'and Motors in 3/16" square - - - 14,276 ft. S F PS e sen^rourjn^nes. we can g.ve i " dia. round - - - 37,592 ft. .2" dia. round - - - 20,596 ft. .236" dia. round - - 5.150 ft. .218" dia. round - - 38,194 ft. BURFORD. TAYLOR & CO. LTD., Apply Hniier SDecialists. Middlesbrough. Telephoned Middlesbrough 2622. ^ W H ITESIDES LTD., 6/16, Roe Lane, Southport. 2156 76 (Supplement) E l e c t r i c a l R e v ie w June 15, 1945 REBUILT MOTORS AND GENERATORS E SLIE Dixon & Co. for Dynamos, Motors, Swifcchgear, L Chargers and Telephones.—214, Queenstown Road. Battersea, S.W.8. Telephone, M'ACaulay 2159. Nearest ONG deliveries can often be avoided by purchasing Rly. Sta. : Queen's Road, Battersea (S.R.). 18 L rebuilt secondhand plant. We can redesign or replace ]\/TAY we send our Engineers’ Stethoscope on approval surplus plant.of any size. (without obligation)? Particulars on request.—Capac Ltd.. 2. Ullswater Road, London. S.W.13. 78 SEND US YOUR ENQUIRIES. TV/J OTOK G enerator Sets and Convertors, all 6izes and OVER 1.000 RATINGS ACTUALLY IN STOCK HERE. voltages from i kW up to 500 kW in stock.— Britannia Manufacturing Co. Ltd.. 22/26. Britannia Walk. City Road, London. N.I. Telephone, Clerkenwell 5512. 5513 & 5514. 28 DYNAMO & MOTOR REPAIRS LTD., ■Y/TOTORISED Bench Drilling Machine. 13 speeds, -4.VA £12 12s. 6d.—John E. R. Steel, Clyde Mills, Bingley. Wembley Park, Middlesex. Phone 1066. 51 Telephone: Wembley 3121 (4 lines). ’VTAMEPLATES, Engraving, Diesinking, Stencils, Steel Punches.—Stilwell & Sons Ltd., 152, Far Gosford Also at Phoenix Works, Belgrave Terrace, Soho Road, Street. Coventry. 14 Handsworth, Birmingham. N E 3-h.p. Higgs Motor. 440 v. A.C.. 955 r.p.m ., com O plete with starter; also one 1-h.p. Motor. 440 v. D.C., Telephone: Northern 0898. 910 r.p.m.. complete with starter. In perfect, condition.— 26 E. Brinkman Ltd.. 15a. High St.. Epsom. Epsom2565. 7172 NE 700-kW Revolving Field Alternator by The Brush A large stock of Searchlights (sale or hire), also Winches O Electrical Engineering Co. Ltd., 400/440 volts. 3- of our self-sustaining types. Hundreds of thousands phase. 50 cycles, neutral point brought out. 1.000 r.p.m.. supplied during the last 40 years to Government depart with 10-kW direct coupled exciter at 50 volts, arranged ments, corporations and innumerable traders. Mirrors, on cast iron bedplate, suitable for either belt drive or Lenses, A.I.D. Turnbuckles, etc.. also surplus Carbon Rods. direct coupling.—George Cohen, Sons & Co. Ltd.. Wood Ebonite and Fibre.—London Electric Firm. Croydon. 42 Lane. London. W.12. 2068 number of D.C. Generators, 100 kW , 500 volt, 250 A r.p.m.. Crompton, for coupling. First class. Low HONE 98 Staines. 130-kW, 110-v. D.C. Diesel prices.—The Electroplant Co.. Wembley, Middx. 2135 P Generating Set; 60-kW, 220-vo. D.C. ditto; 7/9-kW. .C. and D.C. House Service Meters, all sizes, quarterly 110-vo. D.C. ditto; 50-kW, 440/220-vo. D.C. Steam Set; A and prepayment, reconditioned, guaranteed one year. 400-kW B'elliss Surface Condenser; Weir Feed Pumps. Repairs and recalibrations.—The Victa Electrical Co.. 47. 9J" x 7" x 21" and 8i" X 6" x 13".—Harry H. Gardam Battersea High Street, S.W.ll. Tel. Battersea 0780. 19 6 Co. L td.. Staines. 60 .C. and D.C. Motors, all sizes, large stocks, fully ORCELAIN Cleats, 2 and 3 groove, various sizes ex A guaranteed.—Milo Engineering Works, Milo Road, P stock, price list.—Edwardes Bros., 20, Blackfriars East Dulwich. S.E.22 (Forest Hill 4422). 6781 R oad. London. S .E .l. 7199 .C. and D.C. Welding Sets. 200 amps., petrol driven, ORCELAIN Insulators, various sizes in stock, galv. A direct coupled, from stock.—The Electroplant Co.. P spindles. — Edwardes Bros., 20. Blackfriars Road. Wembley. Middx. 2133 London. S .E .l. 7200 .C. Motors, l/5 0 th h.p. to 10 h.p.. from stock. Also OTARY Converters in stock, all sizes; enquiries A D.C.—The Johnson Engineering Co.. 86. Great Port R invited.—Universal Electrical. 221, City Road. land Street. London. W.l. Tel. : Museum 6373. 57 London. E.C.l. 16 ERIAL Cables, all sizes quoted for; good deliveries ELF-Priming Electric Pumps, 300 g.p.h., £12.—John A against Government contract numbers.—Edwardes S E. R. Steel, Clyde Mills, Bingley. Phone 1066. 53 Btos.. 20. Blackfriars Road. London, S.E.l. 7195 EVERAL duplicate 20-h.p. and 25-h.p., 440-volt D.C., lternator. 500 kVA. 3-p., 50 c.. 400/440 v.. 750 A revs., direct coupled exciter, 2 brgs., on bedplate. S 3-bearing Motors by Mather & Platt, on baseplates. —Stewart Thomson & Sons, Fort Road. Seaforth. Liver 650 r.p.m., with Brookhirst panels.—Newman Industries pool. 21. 58 Limited. Yate. Bristol. 2047 MMETER, D.C., A.C.. D-10 portable; Timeswitch. QEVERAL Telescopic Tower Ladders ready for essential A 6amn.; 1-kW Hotplate; Everay High Frequency Set. ^ work. Extensions. Trestles and Steps to order.— £15.—C. Behrens, 52 Elgin Cres.. LadbrokeGro. W .ll. 7169 Shaftesbury Ladders Ltd.. 453, Katherine Road. E.“. ELT Grinders or Sanders, 4" wide belt. £5 5s.; 6" wide Grangewood 3363. 15 B belt. £10 10s.—John E. R. Steel. Clyde Mills, Bingley. QPECIAL line. Bell and Telephone Wires, also screened Phone 1066. 52 ^ wires, large quantity, cheap.—Edwardes Bros.. 20. EST English Cables. 1/.044 up to 127/.103, deliveries Blackfriars Road. London. S.E.l. 7201 B against M.O.S. requirements.—Edwardes Bros.. 20. TAFF Time Checking and Job Costing Time Recorders Blackfriars Road. London. S.E.l. 7196 S (all makes) for quick cash sale. Exceptional con .T.H. Electrical Transformer for sale, A.C. to D.C.. dition. Write — Box 528. Smiths, 100. Fleet Street. B type D .S.10/10, 50 cycles. H.V. 230, L.V. 100. London. E.C.4. 3 1 kVA 5. single-phase.—Apply Manager, County Times. Q WITCH and Fuse Units, Conduits and fittings, works Welshpool. 2139 ^ retirements stocked.—Edwardes B to s ., 20. Black /CARBONS, large stocks assorted sizes, solid and cored.— friars Road. London. S.E.l. 7202 ^ Edwardes Bros., 20. Blackfriars Road. London. S.E.l. SWITCHBOARDS suitable for dynamos and alternators, 7197 ^ all sizes from 100 amp. up to 1.500 amp.—Britannia . & B. Diecasting Machine for sale. Write; full parti Manufacturing Co. Ltd.. 22/26, Britannia Walk. London. E culars from—“ V. U.,” c/o Streets, 110, Old Broad N .I. 25 Street. E.C.2. 2150 XpXHAUST Fans. new. 14", 1-phase. 200/250 v., 1.900 ripRANSFORMER Lead-in Wire, 7/38 and 14/38 s.w.g., Insu-Glass finished, various colours, stock.—Saxonia. cu. ft./min., £11 15s.—Southern Ignition Co. Ltd.. Greenwich. S.E.10. 190. Thornton Road. Croydon. 75 34 OR sale, in perfect order. Plating Generators, 6 volt. ^TRANSFORMERS, single and three-phase. All types F 3,000. 1.000 and 500 amp. Other redundant plant. up to 10 kVA.—Woden Transformer Co. (Phone. Write parties., appointment view.—H. H. Hvwood. Elect. Bilston 41959), Moxley Road. Bilston, Staffs. 12 Eng.. 40, Coram St.. Woburn PI.. London, W.C.l. 2123 rTVR.S. Cables and Flexibles, Welding Cables, supplied OUR identical 150-kW “ Weir Sulzer / E. C. C.” to M.O.S. requirements.—Edwardes Bros.. 20. Black F Diesel-driven Generating Sets. 220 volt D.C.—Stewart friars Road. London. S.E.l. 7203 Thomson & Scfhs. Fort Rd.. Seaforth. L’pool. 21. 74 T W O Gardeners' Oil Engines, complete with chain-driven ENERATING Sets for sale. 18 kVA. 4.00/3/50. petrol; D.C. generators, fuel tanks, air bottle, switchboard, G 300-amp. petrol-driven Portable Welding Set: 2*-kW. etc. Type 7 H.F. driving Dick Kerr Generator. 20 kW. 220-v. D.C. Crude Oil Set.—Fyfe, Wilson & Co. Ltd.. 110 v.: Type 4 H.F. driving Newton Generator, 75/80 Bishop’s Stortford. 2157 amps.,110v. Both machines now in use, seen by appoint EAVY duty Arc Welding Plants. 200 amps. Price ment. Further particulars apply — H. D. Moorhouse. H £31 10s. complete. Also Spot Welders. £36 15s.— Imperial Buildings. 7. Oxford Rd.. Manchester. 1. 2101 John E. R . Steel. Clyde Mills, Bingley. Phone 1066. 50 f*l,-kW Turbo-Generating Set. 110 volt D.C.. £40.— NSU-Glass covered Plain or Enamelled Instrument ^ 2 Stewart Thomson & Sons. Fort Road. Seaforth. I Wires. No. 18 s.w.g., No. 40 s.w.g., stock deliveries.— Liverpool, 21. 55 Saxonia. Roan Works. Greenwich. S.E.10. 29 7 _l-kW Steam-driven Generating Set. Ashworth Parker EAD-covered and Armoured Cables, P.I. and V.I.R.. 2 vertical engine coupled to L.D.M. compound wound L various special lines at low prices.—Edwardes Bros.. 230-volt generator. £120.—Stewart Thomson & Sons, Fort 20, Blackfriars Road, London, S .E .l. 7198 Road, Seaforth. Liverpool, 21. £4 June 15, 1945 E l e c t r ic a l R e v ie w {Supplement) 77 Q Desk Fan, 45s.; Towel Rail, 40s.; Bench Motors, 1/10 WORiK W ITH ASSURED LONG RUNS and 1/20 h.p.. 40s. each: all for 200/220 volts direct current. Further particulars from—Box 7164, c/o The TO PLACE Electrical Review. D/VkW , 220-v., 350-revs., S.I., two ped. brgs., on bed- o v plate.—Greenhalgh Bros.. B urton’s Field Mill. Atherton, nr. Manchester. 2044 1 A O h P 400/3/50. S.R., 730-revs., Louvre Vent., B.T.H. (ball bearings), with Ellison O.I. gear.— roprietors of new electrical Greenhalgh Bros., B urton’s Field Mill. Atherton. M /cr. 2045 P DOMESTIC APPLIANCE WISH TO 1 1 rV volts* 14‘h.p., G.E.C., 1.700-r.p.m., shunt wound CONTACT MANUFACTURERS HAVING IN D.C. Motors. 12 available.—Britannia Manufac THE NEAR FUTURE CAPACITY FOR DIE- turing Co. L td.. 22/26. Britannia W alk.L ondon.N .I. 2050 CASTING. LIGHT ENGINEERING AND 1 4 -0 'k^ Beiliss/Crompton Alternator. 400/3/50. 4- ASSEMBLY. wire. Seen running.—Stewart Thomson & Sons, Fort Road, Seaforth, Liverpool. 21. 47 Please communicate with Box 2132, c/o The 1 CA -kW , 500-volts, 700-revs. S.I., two ped. brgs., on Electrical Review. J-vIV/ bedplate.—Greenhalgh Bros., Burton’s Field Mill. Atherton, nr. Manchester. 2046 A volts, 3-phase, 50-cycles, ball-bearing M'otors. slip ring induction type: one 140 h.p., 975 r.p .m .: one TTJESIGN and Development? We have facilities parti- 150 h.p.. 730 r.p .m .; two 200 h.p., 980 r.p.m .—Oldfield cularly suited to this class of work. A.I.D. approved. Engineering Company Ltd., 96, East Ordsall Lane. Sal Enquiries to — Green Electrical Industries Ltd.. 44/45. ford. 5. Blackfriars 3842. 2026 Tamworth Rd.. Croydon. Phone. Croydon 7417-8. 7137 O K /V k V A Alternator, 400 volts. 3-phase. 50 cycles. 750 T^LECTRICAL Measuring Instruments skilfully repaired revs., with direct-coupled exciter: also two 250- and recalibrated. — Electrical Instrument Repair kW Rotary Converters, with transformers and switchgear. Service. “ Stanimede.” Forlease Road. Maidenhead. 7117 input 6.600 volts. 3-phase, 50 cycles, output 420/210 volts 1X/TACHINING Work, for Centre Lathes up to 6£ in. D.C.—Midland Counties Electrical Engineering Co. Ltd.. centres and medium-sized milling (good grade work Grice Street, Spon Lane. W est BTomwich. 36 preferred).—The London Electric Firm, Croydon. Up i-h.p. D.C. Motors, 1.440 r.p.m., 230 v.. cont. lands 4871. 56 rating, compound wound, ball bearings, condition OMALL Armatures, etc., winding or re-winding, in as new, G.E.C. Offers to—Box 2020, c/o The Electrical ^ quantity. High-class work, prompt delivery.— Review. Southern Ignition Co. Ltd.. 190. Thornton Road. Croy 0 0 f Y kW Turbo-Alternator Set. made by Metro- don. 59 1 politan-Vickers in 1920, 3-phase, 50 period. QMALL firm of Instrument Makers. London, having 400 volts. Steam pressure 200 lbs., jet condenser. Apply ^ completed contracts, are in a position to undertake —Patons & Baldwins Ltd.. Halifax. Yorkshire. 2000 other work.—Box 7176, c/o The Electrical Review. 1 yds. 37/103 V.I.R. Taped and Braided, in -LjV/V/w good condition. Low price for quick disposal. AGENCIES —Box 2138, c /o The Electrical Review. 0 0 0 'kW Turbo Alternator Set by Oerlikon, con- 3 sisting of Oerlikon Turbine. 200 lbs. pressure, A MARKET OF OVER 400 MILLIONS AWAITS YOU 3.000 r.p.m., direct coupled to 3,000-kW, 6,600-volt. 3- phase, 50-cycles Alternator, 3,000 r.p.m., with exciter India Ready for Imports and switchgear, complete with surface condenser, pumps and motors. All new 1927.—Newman Industries Limited. ITH the abolition of wartime import controls in India Yate. Bristol. 2086 W by the issue of a NEW OPEN GENERAL LICENCE. Indian Importers are now7 free to import from the United Kingdom a wide range of consumer goods without licence, ARTICLES WANTED thus enabling Britain’s Export Trade to expand. A CETATE and other thermoplastic scrap ; polythene We are interested in the import of general merchandise and P.V.C. in any form; also scrap cable and in that can be shipped under this “ Consumers Scheme.” such sulated wire: urgently wanted.—Elton Levy & Co. Ltd.. as Electrical Appliances, etc.. and invite detailed informa 18. St. Thomas Street, S.E.l. 30 tion, with prices, terms, and where possible samples of piOIL Winding Machines wanted for essential work-— the merchandise. ^ Box 63. c/o The Electrical Review. THE INDUSTRIAL & COMMERCIAL TRUST LTD.. .C. Starter, 125 h.p. or nearest, 230 volt. Full parti Wavell House. Ballard Estate. Bombay. D culars and price to—Southern & Redfern Ltd.. Elee. London Office : Engs., Woodhead Road. Bradford. 2126 Mr. R. A. Williams, 4, New7 Court. Clement's Inn. W.C.2. LECTRIC Irons, Table Lamps and Standard Lamps (HOLborn 5946). E and other electrical accessories are urgently required. ______1792 Good continuous contracts offered. Will manufacturers communicate with—Brooks & Bohm Ltd., 90. Victoria AGENCIES Street. S.W .l (Victoria 9550). 2112 required by extensive Stockists of NAMELLED Copper Wire wanted. Please state quan electrical equipment in Northern Ireland, E tity, make, gauge and price.—Box 61, c/o The for the following : — Electrical Review. NGINEERING Technical Books (new or secondhand) CABLES: CONDUIT; E wanted in any quantity. Attractive cash offers. Call ELECTRICAL ACCESSORIES; —Third floor, 356, Oxford Street, W.l, or “ Stoneleigh,” SMALL SWITCHGEAR; St. George’s Avenue. Weybridge. 62 DOMESTIC APPLIANCES; ~|\/TOULDS for casting grids for plates of automobile INDUSTRIAL. COMMERCIAL -LJ-L batteries, new or secondhand. Replies to—Box 2118. and 0/0 The Electrical Review. DOMESTIC FITTINGS. \\T ANTED in working order, Diesel-driven Generating ▼ ▼ Plant, about 20 kW. 400 v., 50 c.. 3-phase, complete Good financial standing and prepared to with switchboard. Write—Gloucestershire Tile & Sand buy own account. Co. L td.. 39. Rodney Road. Cheltenham. Glos. 2065 WT ANTED, Rotary Converters, any size.—Universal, A pply:—Box 2108. * ▼ 221, City Road, London, E.C.l. 22 c/o The Electrical Review. WORK WANTED AND OFFERED SOUTH AFRICA UTOMATIC capacity available up to 1" diameter, also A from l k " to 2 " diameter Brass Work. Quick delivery, LECTRICAL Engineer, with good sales organisation keen prices. Write—7“ V. W .,” c /o Streets. 110. Old E in the Union and Rhodesia, representing various Broad Street, E.C.2. -149 British manufacturers of Electrical Goods, wants agency /CAPACITY available for complete manufacture of all ^ types of Radio and Electrical Equipment. Wave ELECTRIC TRANSFORMERS. winding, coil and transformer winding, with vacuum im pregnation to Ministry super-tropical standards. A.I. D. Fully conversant with tender business, etc. approved.—Green Electrical Industries Ltd., 44/45. Tam- worth Rd., Croydon. Telephone. Croydon 7417-8. 7136 B'qx 2111, c/o The Electrical Review, 78 (Supplem ent) E l e c t r i c a l R e v ie w June 15, 1945 EXPORT EXPORT T ONDON firm wish to contact manufacturer with a MANUFACTURERS WANTED view to sole sale. Excellent connections throughout England and W’ales with manufacturers of domestic and PR IN C IPA L of well-known South African house visiting other electric appliances and with radio valve manufac England desires to obtain sole selling and distributing turers. Prepared to hold London stock.—Box 7182, c/o agencies for Africa. The Electrical Review. Also interested in financing manufacturers wishing to ~]\/TANUFACTURERS’ Agent, well established, with start up in Africa, or obtain their rights to do so. Have sound connection in South, South-West and South extensive selling organisation throughout Africa. Willing WTales amongst wholesale and retail houses, is desirous of act as Principals, purchasing in London, or Commission contacting manufacturer with view of sole representation Indent Agents. Apply :— in area on commission basis.—Box 2140, c/o The Elec trical Review. H. & J. ROBINSON. 252, Morden Rd., London, S.W.19 EFRIGERATOR manufacturers require twelve Dis I 2142 R tribution Agents in England. Scotland and Wales. Enquiries invited from well established electrical and hard SOUTH AFRICA ware houses. The distributors appointed will have sole distribution rights in the areas allocated to them. Reply in \\^HOLESALE Electrical Organisation covering South first instance to—Box 2125, c/o The Electrical Review. Africa, South-West Africa, Rhodesia and Portuguese ¿¿GOTLAND and Ireland. M.I.E.E., M.I.B.E., with East Africa requires sole importing rights for good British first-class connection with supply authorities, ship lines of household utilities such as Electric Kettles, Irons. builders, large industrial concerns, etc., throughout the Heaters, etc. Reply to: — above areas, is open to consider additional representation. Reply—0568, Wm. Porteous & Co., Glasgow. 7178 W. A. SPARROW & CO. LTD., TXTANTED, Agencies for British India for electrical ' * A.C. and D.C. motors, generators, transformers, con BISHOP'S STORTFORD. HERTS. vertors. engines, arc welding plants, pumps, switchgears. 2148 meters, fans (table, exhaust and ceiling), heating and cooking appliances, cable, lamps, fittings and general live, well-established company manufacturing small accessories, also sound equipments for cinema and radio A electrical switchgear, with excellent connections and studios, and parts, by a well-organised firm who can first-class sales organisation at home and abroad, seeks sweep India’s business for you through Calcutta. Bombay. Selling Agencies for products like limit, pressure and float Madras. D^lhi and Lahore offices, and over 100 sub-agents switches, starters, push buttons, signalling lamps, etc. in small towns throughout India. Apply, with catalogues, Would buy on own account, sound financial standing.— prices and trade terms—Havell’s Electrical Sales Corpn.. Box 2043. c/o The Electrical Review. 59, Forbes Street, Fort, Bombay. 1. 1980 A young man desires London Agency from manufacturer. \\T ANTED by our principals in Calcutta. Distributing Good connection with electrical and wireless whole * * Agencies for India of the following: Electric Irons. salers and retailers.—Box 7103. c/o The Electrical Review. Toasters. Roasters. Vacuum Cleaners, Refrigerators. Elec A GENCIES wanted for the North of Ireland for Elec- tric Motors, Air Conditioners, Electric Generators, Power trical Household Equipment and Heavy Industrial and Lighting, etc. Established in Calcutta since 1830. Equipment, buying or commission. Central offices and For details apply to—R. B. Rodda & Co., 7. Commercial stores situated in Belfast. Trade connection with the Buildings, 17, Steelhouse Lane, Birmingham, 4. 7175 electrical and allied trades of Northern Ireland.—Box A561, Wells Advertising, 113, Royal Ave., Belfast. 2143 MISCELLANEOUS GENCIES required. South of England, including the A London area: (a) Cables; (b) Small Switchgear; (c) ATTERY Chargers Modernised. Your old Charger made Transformers: or any lines suitable for distribution for B like new by specialists. Conversion from valve to metal wholesalers’ business.—Box 40. c/o The Electrical Review. rectification. Send for interesting leaflet “ Q.D.” on this GENCIES required for London, South of England, for service.—Runbaken Electrical Products, Manchester. 1. 45 A the following: (1) Domestic electrical appliances; HOTOGRAPHY. a photograph says more than a (2) Brass electrical accessories, switch plugs, etc.: (3) Con P thousand words. Realistic photographs for catalogues, duit. Advertisers have clientele with every wholesaler in brochures and general reproduction purposes. All branches the territory mentioned. Immediate turnover can be of photographic work undertaken. Records made of present guaranteed. Either commission or buying basis. Post work, premises, etc.—Miles & Kaye Ltd.. Industrial Photo war arrangements considered. — Box 64, c/o The Elec graphers. 100. Southampton Row. London. W.C.l. Tele trical Review. phone. HOLborn 6858. Established over 50 years. 1994 GENT. M.I.E.E., wide and influential connections in A Midlands, would represent established firms. Any EDUCATIONAL NOTICES lines considered.—Box 7107, c/o The Electrical Review. GENT required by electrical contractors (London), full A or part time.—Box 7167, c/o The Electrical Review. LATEST A.M.I.E.E. RESULTS GENTS required for following areas: Birmingham, A Manchester, Newcastle, Glasgow, South Wales, to TN the recent Examinations held by the Institution of handle on commission basis wide range Electric Con Electrical Engineers 477 Candidates sat who had densers.—Box 2151, c/o The Electrical Review. taken B.I.E.T. courses. Of these 457 were successful in ARGENTINE: Post-war Exports. Well-connected passing the examinations. We believe this record of 457 Agent recently returned to this country, with partner successes out of 477 entrants has never before been competent engineer in the Argentine, wishes to contact approached by any oral or correspondence tutorial British firms manufacturing all classes of electrical equip organisation, and indicates the very high efficiency of ment, engineering lines, cables, hardware, etc. Excellent the modern system of Technical training which we have opportunity for firms to anticipate early resumption of laid down. trading with thoroughly competent representatives in lead The B.I.E.T. tutorial organisation is waiting to assist ing South American country. Highest credentials, full you either with a short specialist course or complete particulars.—Box 46. c/o The Electrical Review. training for a recognised examination. X^STAB'LISHED firm with office in Glasgow desire to We have available a large full-time staff of instructors, represent manufacturers throughout Scotland. First- while the efficiency of our extensive organisation is a class representation. Only sole agencies considered. Reply byword among engineers. —0662, Wm. Porteous & Co.. Glasgow. 7179 X^XPORT to India: An export house with well-estab- WE GUARANTEE—“ NO PASS^-NO FEE” lished connections in the Indian market desires to hear from manufacturers of Electrical Accessories, House May we send a copy of “ ENGINEERING OPPOR hold Appliances, Refrigerators, etc., who seek to expand TUNITIES ” ? Containing a great deal of useful advice their export business. Write, giving full details, to the— and detailed information on over 200 Home-Study Courses Empire Export & Import Company, 2. Broad Street Place. and examinations, this handbook is of very real value to London, E.C.2. 70 the ambitious engineer. ONDON Agent seeks one or two first-class agencies. Our highly informative handbook will be sent FREE L 20 years’ experience. Insulated Wires and Cables. and without obligation on request. Rubber Flexibles. etc.. Domestic Electrical Appliances. Prepared to hold London stocks. Used to large turnover. BRITISH INSTITUTE OF ENGINEERING —Box 7135, c/o The Electrical Review. TECHNOLOGY. ANUFACTURERS’ Agents, covering the whole of Established 1927— over 200,000 students. M Great Britain and Colonies, are desirous of contact ing manufacturers with a view to sole selling rights (either 12, Shakespeare House, 17, 18 & 19, Stratford Place. commission or buying), post-war arrangements considered. Oxford Street. London, W.1. —Box 23. c/o The Electrical Review. 33 June 15, 1945 Electrical R e v ie w ( Supplement) 7 9 EDUCATIONAL NOTICES — Continued COMPANY MEETING Great Possibilities for TECHNICALLY QUALIFIED ENGINEERS ANTRIM ELECTRICITY SUPPLY Key Men In War-Time and Afterwards No. 8 Development Scheme HPHE finest posts and the great majority of posts in -*■ Great Britain in this war are technical. The same T H E 17th Ordinary General Meeting of the Antrim will be the case when the war is over. The vast increase Electricity Supply Company was held on Wednesday. in mechanisation now being applied to war purposes will 6th June. 1945, at 88, Kingsway. London, W.C. Mr. then be suitably utilised in reconstruction, and in trade R. P. Beddow (chairman and managing director) presided. and commerce. Take a recognised Engineering Quali fication through home-study with the T.I.G.B.. whose In the course of his speech, the Chairman said: Students have gained 35 FIRST PLACES in the I feel it my duty to report to the shareholders circum A.M.Inst.C.E.. A.M.I.E.E.. A.M.I.Mech.E.. A.F.R.Ae.S.. stances which have arisen during recent months and etc., examinations. Write to-day for “ The Engineer’s Guide to Success.” containing the world's widest choice which may vitally affect the companies. I refer to the of engineering Courses—over 200—covering all branches : No. 8 Development Scheme which is being promoted by Electrical, Aeronautical. Mechanical. Wireless, etc. the Electricity Board for Northern Ireland and has been submitted to the Ministry of Commerce for confirmation under the Electricity (Supply) Act. 1931. The scheme THE TECHNOLOGICAL INSTITUTE OF covers the whole of the areas of supply of the Antrim GT. B R IT A IN companies, as well as the urban and rural districts of Limavady. The Antrim companies are, therefore, the 35. Temple Bar House. London. E.C.4. 77 undertakers primarily affected by the scheme. The main object of the scheme is stated to be the promotion, co-ordination and improvement of the supply, distribution and sale of electricity within the area to ELECTRICAL REVIEW'S :------which the scheme relates, but, even if the scheme is con firmed. it would in itself confer on the Board no power to distribute electricity in any of the areas of supply of INSTRUCTION CHART either of the Antrim companies unless and until the F O R DEALING WITH APPARENT Board acquires the companies’ undertakings. On the other hand, on the confirmation of the scheme, the Board DEATH FROM ELECTRIC would become empowered by the Act of 1931 to acquire any of those undertakings at any time compulsorily. As SHOCK far as the companies’ areas are concerned, that appears In accordance with H O ELECTRICITY REGULATION 29 clearly to be the main, if not the only, purpose of the scheme. ELECTRICAL REVIEW The main powers of the Antrim Electricity Supply and Distribution Companies were conferred by a Special Act of Parliament in 1928. and by a Distribution Order granted in 1932. As is customary, the powers of the Supply Co. under the Act of 1928 are not at present purchaseable by any local or other similar authority; the undertaking authorised by the Distribution Order may not be purchased until 1974. when the local authorities will first become entitled to exercise the rights of purchase given them under the Electric Lighting Act. 1888. The Distribution Order was applied for before the Act of 1931 was passed, but was not granted until May. 1932. some twelve months after the passing of the Act. Before the grant of the Order the financial stability of the companies was carefully inquired into by the Ministry of Commerce, and the Order—deferring the earliest date of purchase until 1974—was then granted to the Distribution Co. It may be noted tjiat had tha Government desired the Electricity Board to be made responsible for the develop ment of electricity supply in the area covered by the Distribution Order, the Order could have been granted to the Board which was in being at the time. The Directors’ View I t is our view that the Act of 1931 was not intended to apply to statutory undertakings such as ours which cover a wide and consolidated area, and are moreover now inter-connected with the undertakings of the Elec tricity Board and of the Belfast Corporation. Further more, we maintain that we were entitled to take at their face value the powers w’hich were granted to us by Parlia ment or under statutory authority, and we have developed our areas on the faith of those powers. We have borne the burden of the lean pioneering years, and if at this juncture the undertakings were to be com pulsorily taken from us. the companies would, in my view, be receiving a very raw deal which would not only be most unfair to the companies but would moreover not be calculated to enhance the credit for fair dealing of LITHOLITE INSULATORS & Northern Ireland. If the scheme is confirmed, the com panies will not know whether any. and if so which, of ST. ALBANS MOULDINGS LTD their undertakings may be compulsorily taken from them at any time by the Electricity Board, and with this sword of Damocles hanging over them it would become impracticable for the companies to proceed with the proper development of their areas. WATFORD The companies have, therefore, lodged the strongest representations against the confirmation of the scheme, ’PHONE : WATFORD 4494 and will be represented by counsel at the inquiry which is .to be held by the Ministry of Commerce in July. The report was unanimously adopted. 2130 8 0 ( S u p p lem en t) E l e c t r i c a l R e v ie w June 1 5 , 1 9 4 5 COMPANY MEETINGS — Continued CALLENDERS CABLE AND CONSTRUCTION EDMUNDSONS ELECTRICITY CORPORATION Proposed Amalgamation Lord Royden's Review TN the course of his statement issued to stockholders of Callender’s Cable and Construction Co. Ltd.. in con nection with the Annual General Meeting to be held on June 15th, 1945, the chairman. Sir Malcolm Fraser. Bt.. T^HE Right Hon. Lord Royden, C.H., in the course of G.B.E.. reports a profit of £503.185. as compared with -1- his address on Friday. 8th June, to the stockholders £465.115 last year (an increase of £38.070), which, with of Edmundsons Electricity Corporation Ltd.. said: The the £315.884 brought forward from 1943, leaves a balance following facts need no emphasis from me to indicate the of £819.069 available for distribution. The directors immensity of the tasks which your companies performed recommend a final dividend of 10% and a cash bonus successfully during the periods reviewed : of 5%—both less tax—making a total of 20% for the year. 1. Total assets were increased from just under thirty- After dealing with the year's balance sheet and accounts, three million pounds to over forty-six million pounds: the Chairman’s statement continues as follows: — 2. Revenue from sale of current increased from under five million pounds to over eleven million pounds: War-time Activities 3. L^nits sold annually to consumers increased from It is now possible to give you some indication of the eight hundred million units to two thousand three hundred Callender Company's war-time activities. The problems million units: produced by the magnetic mine: the disappearance of natural rubber: and the demand for cables suitable for 4. Provision for taxation was increased from ninety-five transmitting alternating currents for Radar and similar thousand pounds to over one million and seventy-six purposes (having frequencies which could not be contem thousand pounds: plated by the cables in use in pre-war times) have pre sented problems of the first magnitude. In the solution 5. The average cost of coal per ton increased from of all these problems your company has taken the lead, twenty shillings to thirty-seven shillings: and in the national interest has placed its technique at the disposal of the Government to be used by the industry 6. The average price of units sold for all purposes has generally. decreased from 1.27d. to 1.08d.: for domestic and com mercial purposes the decrease was from 2.77d. to 1.94d.; Among numberless war activities is one which your company, together with one or two other cablemakers 7. Net profit to Edmundsons decreased from five hun with waterside factories, were able materially to assist dred and eighty-two thousand pounds to five hundred and the Government in the production of the celebrated thirty-five thousand pounds: " Pluto ” oil-pipe lines which have transmitted a million gallons of petrol a day across the Channel. 8. Not one tariff has been increased; many have been What will interest stockholders at the moment are the reduced. details of the proposed amalgamation of Callender’s Cable and Construction Company with the British Insulated We learned a month ago from Mr. Herbert Morrison Cables Company, under the combined name of " British fthen Home Secretary) that a state of chaos and muddle Insulated Callender’s Cables Ltd." existed in the electricity supply industry. The indis putable facts and figures which I have placed before you The complete amalgamation of Callender’s and British disprove his outrageous statement. Insulated Cables Ltd.. excluding Callender’s Trust, is the logical consummation of past policy of collaboration, If the last five years have done nothing else, they have which will have, as its main objects: The avoidance of demonstrated the elasticity, efficiency and virility of the future duplication of capital and revenue expenditure: industry. They are a denial of the accusation of a state the pooling and speeding-up of research: the achievement of chaos and muddle and the claim that nothing less than of the maximum efficiency in up-to-date production, sales, nationalisation will enable us to solve peacetime problems. distribution and administration: the rationalisation of orders permitting longer and continuous runs of the same I apologise to you for taking up your time in dealing types, thus eliminating unnecessary duplication of process with what to all who are unbiased ^ obviously untrue. layouts, etc.. with a reduction in production costs and Unfortunately, however, the propaganda technique c r delivery dates, and the consequent strengthening of the alleging distress and chaos and exaggerating out of all competitive capacity in the export markets overseas. proportion minor and easily adjustable anomalies was So far as our exports are concerned, it is the considered proved by totalitarian countries to be so successful that opinion of our expert advisers that if the two companies there is a risk of these methods being copied here. c PAGE Index to Advertisers Du Bois Co. Ltd ...... 22 Duratube & Wire Ltd ...... 62 Elcordia Ltd ...... 22 Aberdare Cables Ltd Cover iv Electrical Machinery Traders’ Association...... 56 Aerialite Ltd ...... 25 Electrolux Ltd ...... 48 Air Ducts Ltd ...... !!!!!!!! 2 Ellison, George, Ltd...... 64 Associated Fire Alarms Ltd ...... 58 English Electric Co. Ltd ...... 15 Baldwin Instrument Co. Ltd ...... 48 Evans, Adlard & Co. Ltd...... 82 Bill Switchgear L td ...... 3 Evans, F. W., Ltd ...... 62 Birmingham Mica Co. Ltd ...... 60 Everett Edgcumbe & Co. Ltd ...... 36 Britannia Batteries Ltd ...... 53 Falk, Stadelmann & Co. Ltd ...... 42 Britannic Electric Cable & Construction Co. Ltd.. . 51 Ferguson, Pailin Ltd ...... 27 British Central Electrical Co. Ltd ...... 40 Ferranti Ltd ...... 11 British Insulated Cables L td ...... 57 Fischer Bearings Co. Ltd ...... 38 British Jewel Manufacturing Co. Ltd ...... 46 Flextol Engineering Co. Ltd ...... 58 British Klockner Switchgear Ltd ...... 84 Friedland, V. & E., L td ...... 56 British Thomson-Houston Co. Ltd ...... Cover i & 5 Frost, Harvey, & Co. Ltd...... 54 Browning’s Electric Co. Ltd Cover iii Fry’s Metal Foundries Ltd...... 26 Bruce Peebles & Co. Ltd ...... 2 General Electric Co. L td ...... 70 Brush Electrical Engineering Co. Ltd ...... 16 Godwin, H. J., Ltd...... 60 Bull M o to rs...... 34 Hampton Works (Stampings) Ltd...... 30 Bullers L td Cover ii Hart Accumulator Co. Ltd ...... 42 Burco L td ...... 20 Hedin L td ...... 60 BX Plastics L td ...... 32 Henley’s, W. T., Telegraph Works Co. Ltd...... 13 Bylock Electric L td ...... 66 Hewittic Electric Co. Ltd ...... 24 Canning, W., & Co. Ltd ...... 14 Hildick & H ildick ...... 44 Cascade Water Coolers Ltd ...... 59 Hoffmann Manufacturing Co...... L td...... 55 Castle Fuse & Engineering Co. Ltd ...... 82 Hopkinson Motors & Electric Co. Ltd ...... 46 Celestion Ltd ...... 46 Igranic Electric Co. Ltd ...... 55 Chamberlain & Hookham Ltd ...... 29 International Electrolytic Plant Co. Ltd ...... 40 Collins Electrical L td ...... 66 Jackson Electric Stove Co. Ltd ...... 1 Consolidated Pneumatic Tool Co. Ltd ...... 7 Johnson & Phillips Ltd...... 47 Cressall Manufacturing Co. Ltd ...... 40 Key Engineering Co. Ltd ...... 84 Crompton Parkinson Ltd 9, 67 & 69 Litholite Insulators & St. Albans Mouldings Ltd 79 Darwins Ltd ...... 53 Londex L td ...... 84 Davis & Tim m ins L td ...... 84 Macintyre, James, & Co. Ltd ...... 42 Dennis, G. P., Ltd ...... 60 M. & C. Switchgear Ltd ...... 21 Dewhurst & Partner Ltd ...... 62 Measuring Instruments (Pullin)..... L td ...... 50 Dolphin Engineering Co. Ltd ...... 60 Mek-Elek Engineering Ltd ...... 20 Donovan Electrical Co. Ltd ...... 66 Mercury Switch Mfg. Co. Ltd ...... 62 Downes & D av ies...... 44 D.P. Battery Co. Ltd ...... 63 (Continued on page 82) V p u b o m e tcr GERYK VACUUM PUMPS Rotary or Reciprocating Types for Factory or Laboratory Capacities : from 2 to 250 cubic feet per minute. Vacua Obtainable: Off Perfect: Single stage 005 m/m. Duplex 00001 m/m. L I S T No. 2933 ^ Pulsometer engineering r e a d i n g ^ ÿ f y t e f f i c i e n t ~ lAj o'Vc The Spiral Tube and Components Co. Ltd. Technical Department O SMASTON PARK ROAD. DERBY Head Office - Honeypot Lane, Stanmore, M id d le s e x Telephones - Derby 46067-8 Edgware 4658-9 Telegrams-SplralDerby 46067;Splratucom Phone London 82 (Supplement) Ei e c t r i c a l R e v ie w June 15, 1945 Index to Advertisers (Continued from page 81) p a g e Mersey Cable Works Ltd ...... 65 Metallic Seamless Tube Co. Ltd ...... 33 RESISTORS Metropolitan-Vickers Electrical Co. Ltd ...... 43 Midland Electric Mfg. Co. Ltd...... 31 Mitchell Electric Ltd ...... 82 Monmer Foundry Ltd ...... 84 Multicore Solders Ltd ...... 56 Neill, James, & Co. (Sheffield) Ltd ...... 30 Normand Electrical Co. Ltd ...... 45 Parmiter, Hope & Sugden Ltd ...... 83 Parsons, C. H., Ltd ...... 18 Pearson, C., & W. P. Beck Ltd ...... 22 Petters Ltd ...... 41 Philips Lamps Ltd ...... 61 Poles L td ...... 44 Power Equipment Co. Ltd ...... 50 Predico Ltd ...... 30 MITCHELL VITREOUS ENAMELLED RESISTORS Premier Screw & Repetition Co. Ltd ...... 58 Pulsometer Engineering Co. Ltd ...... 81 are made to a high standard of Rawlplug Co. Ltd ...... 12 accuracy and finish. All approved Repton Engineering Co...... 58 Revo Electric Co. Ltd ...... 10 types are available. Reyrolle, A.. & Co. Ltd ...... 6 We invite enquiries for these and Robinson, Lionel, & Co. Ltd ...... 25 Romac Industries Ltd...... 48 any other form of resistance. Rotunda Ltd ...... 30 A.I.D. Runbaken Electrical Products...... 66 APPROVED ¡Send details of your requirements to : Service Electric Co. Ltd Cover iii Siemens Brothers & Co. Ltd ...... 23 Sim m onds A erocessories L td ...... 39 Simmonds & Stokes Ltd ...... 3 Sm ith, Frederick, & C o ...... 28 MITCHELL ELECTRIC Sordoviso Switchgear Ltd ...... 52 Sparklets Ltd ...... 22 LIMITED Spicers L td Cover iii Spiral Tube & Components Co. Ltd ...... 81 88-90, TENNANT STREET, Standard Telephones & Cables Ltd ...... 17 Stanton & Co ...... 54 Tel.: MIDIand 3096 BIRMINGHAM 15 Symonds, R. H., Ltd ...... 62 Taylor Tunnicliff & Co. Ltd ...... 49 Titanine Ltd ...... ,. . 19 Transformer & Electrical Co. Ltd ...... 56 Tudor Accumulator Co. Ltd ...... 59 Tullis Russell & Co. Ltd ...... 4 Vacuums Ltd ...... 82 Venner Time Switches Ltd ...... 63 Veritys Ltd ...... 37 READY Walsall Conduits Ltd ...... 8 Walters, Austin, & Son Ltd ...... 52 Ward & Goldstone Ltd ...... 35 SOON! W eekes, L ., (L uton) L td ...... 51 Westinghouse Brake & Signal Co. Ltd ...... 68 Westminster Laboratories Ltd ...... 65 f f e x S e w i c e The fact that goods made of raw materials in short ; supply owing to war conditions are advertised in this ; VACUUMS LIMITED Journal should not be taken as an indication that : they are necessarily available for export ; SUTTON COLDFIELD Telephone: SU.T. 3959 -Immediate Deliveries!- " Triumph ” Fuses are in stock, for Switchboard and Busbar Mounting, in all ratings from 5 amps. *250 volts to 350 amps. 500 volts. Prompt deliveries of all types of Distribution Boards, including H.R.C. The only Rewirable H.O. Fuse incorporating both pressure self- aligning contacts and vented explosion chamber in base. Sole Patentees and Manufacturers :— The Castle Fuse & Engineering Co. Limited Castle W orks, 31 /35 Chester Street, Liverpool 8 Phone ; Royal 1610. Grams : “ Corundum, Liverpool ” June 1 5 , 1 9 4 5 E l e c t r ic a l R e v ie w (Supplement) 83 FLAMEPROOF FUSEGEAR ccrt^ flp CROUPS T*H Tested and certified by i-'O T E ST GROUP P1Ü :.n v the Mines Dept. I L R - 3 D SW ITCH 5 0 0 VOLTS HOPE'S PATENTS for use in Groups I, II and III P gases. A complete range of switches and fuse-switches, the latter incorporating Aeroflex high breaking capacity, re- wirable cartridge fuses, is available in 30-amp., 60-amp,, 100-amp. and ^ f° rn the 150-amp. sizes. Aeroflex flameproof r fusegear list. PARMITER, HOPE & SUGDEN LTD. Longsight, Manchester 12. London: 34 Victoria St., S.W.I 84 (Supplement) E l e c t r i c a l R e v ie w June 15, 1945 “ " - I * ” FIBRE CONDUIT Large Stocks now avail f'J — for speedy and able at Manchester f economical production ! KEY ENGINEERING CO. LTD. Send us your enquiries 4 QUEEN VICTORIA ST R EET , LONDON MONMER FOUNDRY LTD. AND MANCHESTER. ST. ANNES ROAD. WILLENHALL, STAFFS SNAP-ACTION FLOATLESS LIMIT SWITCH TYPE AKFR LIQUID LEVEL CONTROL SYSTEM ‘LECTRALEVEL” • For PUMPS. VALVES, SIGNALLING, RECORDING OTHER PRODUCTS : AUTOMATIC STARTERS • For DRAINAGE, SUMPS, ROTARY SWITCHES "■» STO RA G E TA N K S, Etc. CONTACTORS 'Ask for leaflet 94/ER OVERLOADS British Klockner Switchgear Ltd. 10 N DE X • L T D Chertsey, Surrey, pa«« : chwuey m i ,2 M AHUUCTUIUP» OF RELAYS AvtoBK*Y 207-ANERLEY ROAD* L0ND0NSE-20 Printed in Great B ritain a t THE OHAPEL RIVER PRESS, Andover, H ants, and published by ELECTRICAL REVIEW, LIM ITED, at Dorset House, Stamford Street, London, S.E.l. June 15, 1945 E l e c t r ic a l R e v ie w iii Official Repairers to Councils and the leading REPAIRS Insurance Companies. For All Classes of M anufacturers of ELECTRICAL AND MAGNETIC SEPARATORS, MAGNETIC PULLEYS, MFCHAWICAI RPPAIBC TRANSFORMER COILS AND SWITCHES, MECHANICAL REPAIRS e l e c t r ic SOLDER|NG |r q n s Consult BROWNINGS ELECTRIC Co. L td BOLEYN CASTLE, GREEN STREET, UPTON PARK, LONDON, E.I3 Telephone : GRAngewood 4004/5 Established 1919 In these days of tremendous war effort where high quality in materials is of paramount im portance “ Sistoflex” remains unsurpassed SPICERS LIMITED 19 NEW BRIDGE ST., LONDON, E.C.4. Telephone: CENTRAL 4211 SECOMAK t f Regd. Trade Mark HIGH-SPEED Q MORE POWERFUL # MORE RELIABLE PORTABLE # EASIER T O USE This blower with a 212- BLOWER mile-an-hour blast of dry air dislodges all foreign matter from windings of electric motors and other inaccess ible places. Send for leaflet S 7 , 100. 75% of breakdowns can be avoided by prcper and regular cleaning. D irt causes unnecessary friction in m achinery,wastes Telephone: Wembley 0194/5 costly power, and is the direct cause of rapid depreciation. SERVICE ELECTRIC COl LTD., Abbey Estate, Mount Pleasant, Alperton, Middx. IV June 15, 1945 A lllilM A B E S’ SUCCESS CHARTS MATERIAL DESPATCHED t “ . . . how the drums roll out, when Aberdare really get going ! This chart shows m a t e r ia l d e s p a t c h e d in the three important years 1938 to 1940 inclusive, before war rather put the brake on such achievements . . . but how we’re )7^> all looking forward to still bigger increases in the future ! ” , POLITECHNIKl) ABERDARE CABLES LTD ■ LONDON OFFICE: NINETEEN WOBURN PLACE • WCI