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Designed for Service in All Parts O F the World AUTOMATIC including T runk Main Rural designed for service Unit Private in all parts o f the world Private Branch DY dose attention to technical detail MANUAL EXCHANGES of all types the Company has maintained Its position in the forefront of Telecom­ CARRIER TRANSMISSION EQUIPMENT munication Engineers throughout its long experience. Its products enjoy TELEPHONE INSTRUMENTS of all types a world-wide reputation for sound TELEPHONE SWITCHING EQUIPMENT • design and technical excellence. PROTECTIVE DEVICES The Company undertakes the supply and installation of complete Auto- RELAYS matlcandManualTelephoneExchanges for Public and Private service, Auto­ TELEPHONE CABLES, WIRES & CORDS matic and Manual Trunk Exchanges, all types of Telephone Cables for LOADING COILS Trunk and Local Service, C arrier Transmission Equipment and Cables, MARINE RADIO EQUIPMENT Radio Equipments for Ships. SHIPS’ TELEGRAPHS & TELEPHONES CELLS & BATTERIES Dry, Fluid & Inert SIEMENS BROTHERS & CO., LIMITED ISTAtusHEPms WOOLWICH. LONDON. S.E.I8 TELEPHONE : WOOLWICH 2020 30 MAY 1947 SIXPENCE mm: «»». H k 3*ï RM »a BJS&» ¥ L*: b u i L ELECTROFLUX ‘ MAGNETIC CRACK DETECTION APPARATUS The Electroflux Universal Crack Detector will locate cracks in all directions. It is ideal for the rapid inspection of mass produced articles. Semi-automatic operation. TRAFFORD PARK ••• MANCHESTER 17. N/C70I THE ELECTRICIAN 30 M A Y 1947 1409 The Factory Manager gets asato hot w ater ! •VO'S e»V Yiot > %<>» to r i i0 o0.t& Ca° e?3 so in rfíXf tef ... • • 19 5OO VÖ1 fe<4o.Vr® •yec t o O-®” tn° î f lor VS° r&° ti» 6- / * # ie* - J / provÍ ct,at:¡A ^adj^L^ter 1,0 i.°°Ô !£* The model illustrated is just one from the w ide range o f G .E.C. w ater heating appliances designed to meet every domestic and industrial appli­ cation. ELECTRIC WATER HEATING Arfvl. of The General Electric Co. Ltd., Magnet House, Kingsvray. W.C.2 30 M A Y Iÿ tf THE ELECTRICIAN _ _ _ _ _ _ _ . :; , '.-s-:v;i THE ELECTRICIAN 30 M A Y 1947 HEBBURN- 30 M A Y 1947 THE ELECTRICIAN The Electrician\ REBUILDING? 50 M a y 1947 Installing Electric Power Demands GOOD TEAMWORK There must be no hold-ups if erection costs are to be kept down ; no cases of one contractor waiting on another. For their part, J. & P. proved their ability at working on fast building schedules during the war years, and are accustomed to co-operating with architects, consultants and sub-con­ tractors at every stage. And being manufacturers of the main equipment, many possible hold-ups can be eradi­ cated at source. Co-opt J. & P. at thePlanning Stage 1413 WHERE THEY USE BAKELITE LAMINATED No.l-M ERCURY TYPE ON-LOAD TAP CHANGING S WITCH o f Johnson & Phillips Ltd. Because the tapping switches are good, and the material not only resists immersed in transformer oil at high the action of heat and oil, but is also temperatures, Messrs. Johnson & light' in weight and is easily fabricated. Phillips Ltd. have adopted B a k e l i t e It is available in sheets up to 4 inches Laminated as the insulating material thick, and rods and tubes. most suitable for standing up to these The switch illustrated is designed for onerous conditions. The insulating use with power transformers up to properties of B akelite Laminated are 11 kV working voltage. TREFOIL BAKELITE <t> PLASTICS REGD. TRADE MARKS Essential Materials for Essential Work TI09 30 M A Y 1947 THE ELECTRICIAN 1414 Your output will increase imme­ diately you change to the Linread Phillips Screw, which grips the driver, never slips, and ensures faster, cheaper, and safer assembly. Burred screw heads, scratched work and loss of tune are things of W rite to : the past once you use the screw LINREAD LTD., of the future. Do it now. D ept, xx, Sterling Works, Cox Street, Birmingham 3, CHANGE TO for our illustrated leaflet. L i n r e a d Phillips Screws THE ELECTRICIAN 30 M A Y 1947 ipS$ 30 M A Y 1947 THE ELECTRICIAN 1416 By standardising on the totally enclosed The benefits of tie totally enclosed motor and concentrating manufacture motor ore thus mode available at prices on the more popular sizes, Newman which permit its universal application, secure important production advantages. No other motor offers such supreme value. y 1 •/ ? 0 _-’> \ Pioneerj in the universal application o f Totally Enclooct) Alotorj NEWMAN INDUSTRIES LIMITED. TATE. BRISTOL ENG. lonim OIT.ce: 32. Vicimi Si. WnimiBler, SWT THE ELECTRICIAN 30 M A Y 1947 1417 KILOWATT-HOURS APPROVED BY THE ELECTRICITY COMMISSIONERS COMPLY WITH RSS. No. 37-1937 > H P i T S b P I C N j ALL-INSULATED ELECTRICITY METERS TYPE 21 A M . of SIEMENS ELECTRIC LAMPS AND SUPPLIES LIMITED, 38/39 Upper Thames Street, London, E.C.4 Branches al-Bellasl, Birmingham, Bristol, Carditl, Dublin, Glasgow, Leeds, Liverpool, Manchester. Keweaslle-on-Tjne, Noltingham, Sheffield j o M A Y 1947 THE ELECTRICIAN i n d e :X TO ADVERTISERS IN THIS ISSUE A.B. Metal Products, Ltd. .................... 1440 i FRACTIONAL Aron Electricity Meter, Ltd ................................ 1432 Ashley Accessories, Ltd ..............................^ ... 1432 I Automotive Engineering Co., Ltd. (The) 1423 H.P. MOTORS Bakelite, Ltd. 1413 Baldwin Instrument Co., Ltd ............................ 1431 Blackman, Keith, Ltd. 1427 i British Cork Mills, Ltd. ... ... .................... 1437 British Thomson-Houston Co., Ltd ............................. 1419 ! British Insulated Callenders Cables, Ltd. 1410 Buck & Hickman, Ltd. ... 1425 Burdette & C o ., L td ................................................................. 1476 ' City Electrical Co.... 1439 Civitas Trading Corporation .................................... 1418 Collins Electrical, Ltd. 1422 Commercial Structures, Ltd ............................................... 1433 Compton Engineering Co., Ltd ......................................... 1438 i Davis & Timmins, Ltd ........................................................... 1431 Donovans Electrical Co., Ltd. 1439 ¡ Dorman & Smith, Ltd. ... ... ... 1433 Í We have purchased a large quantity of Drayton Regulator & Instrument Co., Ltd. 1439 ! D.S. Plugs, Ltd. ... 1430 new Fractional H.P. Electric Motors, Duratubc & Wire, Ltd. ... 1428 Dynamo & Motor Repairs, Ltd ....................................... 1424 ; available EX STOCK NOW, and in Electrical & General Accessories (Leicester), Ltd. 1476 monthly batches from May, 1947, Electro Methods, Ltd. 1478 i Ericsson Telephones, Ltd. 1474 : onwards. General Electric Co., Ltd. 1409 Hampton Works, Ltd. 1426 Hudson Pressings, Ltd. ... 1428 Hurlock, Wm., Jnr., Ltd.... 1439 BRIEF SPECIFICATION : Johnson, Clapham & Morris, Ltd. 1478 Johnson & Phillips, Ltd ........................ 1412 Single phase-, 50 cycle 4 pole, capacitor Kent Bros. Electric Wire Co............................................... type, screen protected, ball bearing induction Linrcad, Ltd. ... 1414 motors, complete with capacitor condenser. London Shafting & Pulley Co., Ltd. ... 1429 L.P.S. Electrical Co., Ltd. ........................................ 1477 Mavitta Drafting Machine, Ltd., The .. ... 1426 Metropolitan Vickers Elec. Co., Ltd. Cover ii Multicore Solders, Ltd. ... ... 1473 RATED TO DEVELOP OUTPUTS National Fire Protection Co., Ltd. ... 1478 110/120 volts. 1/32 hp. 1390 rpm. Newman Industries, Ltd .... ... 1416 Painton & C o ., Ltd . ... 1469 200/240 volts. 1/30 hp. 1400 rpm. Permaheat, Ltd. ... 1473 Pressphan, Ltd. ... 1478 Pultra, Ltd. ... 1474 Record Electrical Co., Ltd., The............................. 1429 Reeder, Thos., Ltd. ... ... ... ... 1479 Full specification for home and export. Reyrolle, A., & Co., Ltd............................. ... 1411 Riley, Robert, Ltd. ......................................... 1426 Ripaults, Ltd. ... ... ... ... ... 1415 Rowlett Engineering Co., Ltd..................................... 1479 Sanders, Wm., & Co. (Weds.), Ltd........................... 1471 Sangamo Weston, Ltd................................. ... 1421 CIVITAS Scemco, Ltd. ... ... ... ... ... 1476 Shannon, Ltd. ... ... ... ... ... 1473 Siemens Bros. & Co., Ltd. ............... Cover i Siemens Electric Lamps & Supplies, Ltd. ... 1417 TRADING CORPORATION LTD., Simplex Electric Co., Ltd. ................. Cover iii Smith, Frcdk., & Co., Ltd. ... ... ... 1420 Smith Meters, Ltd. ... Cover iv 10, P0RTMAN STREET, LONDON, W.1 Sterling Cable Co., Ltd. ... ... 1475 Taylor, Tunnicliffe & Co., Ltd................................ 1437 Tele:MAYfair6522. Cables: Civitas, L ondon. Thames Wire & Cable Co., Ltd.............. ... 1480 Ulhorn Brothers, Ltd....................................................1438 THE ELECTRICIAN 50 M A Y 1947 ID A COMPOUND-FILLED T-H° H SWITCHGEAR Class M F 36 3 3 K V 7 5 0 M V A BTH 1 V I L L E S D E N THE BRITISH THOMSON-HOUSTON COMPANY LIMITED, WILLESDEN. ENGLAND, A 2884 30 M A Y 1947 THE ELECTRICIAN 1420 e most up-to-date pre­ cision'm achinery and highest quality m a t e r i a l s are em ployed in the m anufacture Anacos C opper Strip, w ith consequent accuracy and reliability. Anacos Copper being used injhe manu­ facture of a circular Lifting Magnet. TELEG telephonev? FREDERICK SMITH & COMPANY Rl ACKFRIARS ‘ (iMowouno i* wi ionoom mcrwc wi« cohiant * tMiTMs. ‘A N A C O N D A 8701 (9 Unes), ANACONDA WORKS. SALFORD, 3. LANCS MANCHESTER THE ELECTRICIAN 30 M A Y 1947 1421 In olden times, chivalry was a feature of the jousts. In modern business, the spirit of chivalry will not overcome all our supply problems, but courteous and prompt attention to individual requirements will often help to speed deliveries. It is in this spirit of real helpfulness that we arc
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