REVIEW
VOL, CXXXIX. DECEMBER 20, 1 946 3604 H English Electric Meters # « r iiiB m se Sem
V
f e W -
'T'U E manufacturing capacity of the Instrument Department has now reverted from the production of special instruments for the Services to that of meeting the National Housing programme. THE ENGLISH ELECTRIC COMPANY LIMITED London Office: QUEEN’S HOUSE, KINGSWAY, LONDON, W.C/2 WORKS : STAFFORD - PRESTON - RUGBY - BRADFORD - LIVERPOOL
N I N E P E N C E W F F K I E l e c t r i c a l R e v ie w December 20, 1946
I
E LECTRIC • C O • LTD PURLEY W AY • CROYDON • SURREY TELEPHONE . CROYDON 2268 TELEGRAMS! NEVELIN.CROYDON- s.’ uecerrwer ¿y), IV 46 E l e c t r i c a l R e v ie w Cbristmas “Tieùtwûw” byHeabtae
For a few days at Christmas- tide we shall cease producing Electrical apparatus for giving physical warmth to human bodies. Surely that’s an appropriate occasion to concentrate all our calorific energy into WARMEST WISHES to our friends everywhere for A TRULY HAPPY CHRISTMAS
leaders in electric water heaters
HEATRAE LTD.. NORWICH GRAMS : HEATRAE, NORWICH PHONE HEATRAE 25131
IS IT ALIVE? PHASING RODS VACUUM TUBE THE “ FACILE to locate interconnections D ETECTO RS between two A.C. systems Range 6,600 to 35,000 V. TERMINAL Send for Prices and List of all kinds of Terminals
ROSS COURTNEY < C d ° ' ASHBROOK ROAD, LONDON, N.I9
TiRMlNAl SCREWS to the spec ific require Sole Makers of :— ments of our ••WESTMINSTER" PATENT 1 No earth cu sto m e rs V A C U U M T U B E D E T E C T O R S ^ Connection ••PARTRIDGE” DETECTORS J required Makers of all EARTHING RODS types of repe tition products from the bar In Th. WESTMINSTER ENG. Co. Ltd. ______all metals Victoria Road, Wlllesden Junction, N.W.10 M C L*md r e p e t i t i o n l t q Te'ephone : Telegrams : POOL LANE • LANGLEY • BIRMINGHAM. Elgar 7372 (2 lines). “ Regency, Phone, London A 2 E l e c t r i c a l R e v ie w December 20, 1946
EMPIRE RUBBER pftei*0* MOULDINGS FOR THE ELECTRICAL INDUSTRY
For current insulation and oil sealing we can apply specialised knowledge gained by long ex perience, constant research and concentrated study of war-time problems. Let us keep your rubber technique up-to-date. Consult our laboratory!
★ EMPIRE RUBBER COMPANY DUNSTABLE ■ BEDS ■ Telephone DUNSTABLE 53 J December 20, 1946 E l e c t r i c a l R e v ie w 3
G izich ew cifSeam i
I je a i
C fie e tin a i to 2iloatjjtienJk ihtouqhout l l e m t l d
S. WOLF & CO. LTD PIONEER WORKS HANGER LANE LONDON, W.5. Telephone: PERivale 5631/4
BIRMINGHAM 47, Barker Street, Handsworth. Birmingham. 19. T el.: Northern 29S4/S MANCHESTER 5, Blackfrlars Street, Salford 3, Manchester. Tel. : Blackfrlors 8426 LEED S 2. Park Square East. Leeds. I Tel. : L ee d s 27981
7043 4 E l e c t r i c a l R e v ie w December 20, 1946
Rothitiill CABLE INSULATING PAPER AUCHMUTY » LONDON MANCHESTER BIRMINGHAM TuiU f fy ttse il lC o .$ id . M?LLJ,EM#FKA|N(.HSCOHAKD I Tudor E.C.4 Street Coroorat:on372 Viangs* treet "** Colmors "4 Row December 20, 1946 E l e c t r i c a l R e v ie w B A INDUSTRIAL T-h J ELECTRIC TIMER
Designed to with stand frequent and ar duous service in indus try, the BTH Timer has two ranges, namely from 5 seconds to 5 minutes (in 5 sec. steps) and 20 seconds to 20 minutes (in 20 sec. steps). It is controlled by any form of pilot switch or push button and will give lasting, trouble-free service. Write for list No. 5642-5 1 i ilr ■àD i n I R U G B Y 6 E lectrical Review D ecem ber 2 0 , 1 9 4 6
A RAN G E O f 'P & ’k m S V IE S E L ELECTRIC SETS
* F. Perkins Ltd., maintain a highly trained technical electrical staff whose services are at the disposal of enquirers. 4* Perkins Engines are designed for much higher speeds and much higher ratings than those used in their Generating Sets. Perkins Diesel Electrical Sets are light in weight and thereby easily transportable. •fr Starting can be by hand, electric motor, or automatic.
8 8 " F i r k i n s DIESEL ENGINES
I FOR COOPS AMP PASSENGER VEHICLES, 1H0 USTRIAI HMD WUHWE *PPLtC»T10WS 1
F. Perkins Ltd., Dept.E.R, 73 Lincoln Road, Peterborough. Phone: 4201 December 20, 1946 E l e c t r i c a l R e v ie w
Llynfi Power Station where a Sturtevant Central Tur bine Vacuum Cleaner installation allows the whole interior to be kept clean and Sturtevant Electrostatic Precipitators ensure only clean gases pass up the stack
STURTEVANT ENGINEERING CO. LTD., 25 WORCESTER RD„ SUTTON, SURREY. LONDON OFFICE : VICTORIA STATION HOUSE, VICTORIA ST., S.W.I 8 E l e c t r i c a l R e v ie w December 20, 1946
An actual untouched magnified photograph o f the teeth o f a 2- inch gear wheel after hardening by Redifon Heating
2-in. gear wheel case-hardened in 2i seconds by Redifon Heating
SIN G a 25kW Redifon Model R .H .4 joints, the plasticizing of moulding powders U radio heating set, it is possible to and preforms, and many other applications place a hardened “ skin ” over the bearing where heat has to be applied either, in the surfaces on the teeth o f a 2-inch gear wheel case of metals, to the outer surface, or, in in 2 i seconds. The teeth, approximately the case of non-conductors, throughout the £ in. by « in. cross-section and § in. long, entire thickness of the material. are water-quenched. Full details of the process and advice as An outstanding advantage of the Redifon to its suitability for use in any particular Heating process is its ability with suitable industry can be obtained from our Indus steels to control the depth of the case- trial Electronics Sales Division. hardened “ skin” applied, without carburiz- ing. The high speed of heating so reduces scaling and the consequent grinding or Redifon Heating cleaning off, that Redifon Heating can BY REDIFFUSION LTD. increase the output of perfectly finished Designers and Manufacturers of articles very considerably. Industrial Electronic and Redifon Heating can also be used for Radio Communication Equipment special drying processes, the setting of glued BROOMHILL ROAD, LONDON, S.W.18 December 20, 1946 E l e c t r i c a l R e v ie w 9
RUBBER INSULATED CABLES The results of unrivalled research and manufacturing experience are embodied in B.I. Callender’s post-war types of rubber insulated cables now at the service of the electrical industry.
BRITISH INSULATED CALLENDER’S CABLES LIMITED NORFOLK HOUSE, NORFOLK STREET, LONDON W.C.2 1 0 E l e c t r i c a l R e v ie w December 20, 1946
Perm anent
For over 40 years we have been making permanent magnet alloys. To-day we are equipped to handle competently any problem of magnet design, manufacture and supply. A com prehensive research and advisory department exists at our works, and is at the service of those with specific magnet application problems.
+ Write for Permanent Magnet Booklet, naming firm and position, to :—
IIM.AH ALLEN & CO, LIMITED. IMPERIAL STEEL WORKS!- SHEFFIELD.9 December 20, 1946 E l e c t r i c a l R e v ie w 11 RECOGNIZED STANDARDS
OF EXCE • • •
I::;;-:.-““---"'"
br1TKH STM*D*R°
SPECIFICATION
FM 78
FERRANTI LTD., Hollinwood, LANCS. London Office, Kern tlouse, Klngaicay, W.C.2. 12 E l e c t r ic a l R e v ie w December 2 0, 1946
c/aaaX
AMO COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES' AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRĘ D COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING 1C FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COO: LING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC 5.ND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS LING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES KERS BELLING ELECTRIC FIRES AND CO O KER BELLING ELECTRIC FIRES AND COOKERS BELLING 1RES A N D CO O K ER S BEL lP g ELECTRIC FIRE? AND COOKERS BELLING ELECTRIC FIRES AND COOI LUNG ELEC TS FI5Ä AND COOKERS BALING ELECTRIC FIRES AND COOKERS BELLING ELECTRF si G AND COOKERS BELLING ELECTRIC FIRES AND COOKER! col RIC FIRES AND COOKERS BELLING ELECTRIC FIRES AN IIG— CT» Fi BELLING ELECTRIC FIRES A N D C O O K ER S B ELLIN G ELI CeWRIĆ" FiRI ND COOKERS BELLING ELECTRIC FIRES AND COOKER' FÎ1TES AND COOKERS BELLU ELECTRIC FIRES AND COOKERS BELLING ELECTRIC ES AND COOKERS BELLING ELECTRIC FIRES COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC RRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRTC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELUNG ELECTRIC FIRES AND COOKERS BELLING ELECTRIC RRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELUNG ELECTRIC FIRES
BELLING & COMPANY. LTD., BRIDGE WORKS, ENFIELD, MIDDX. Telephone: Howard 1217
ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELUNG ELECTRIC FIRES AND COOKERS BELUNG ELECTRIC FIRES AND COOKERS BELLING ELECTRIC RRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC FIRES AND COOKERS BELLING ELECTRIC RRES AND COOKERS BELLING ELECTRIC RRES AND COOKERS BELUNG ELECTRIC El RES AND
CRC 3 2 5 December 20, 1946 E l e c t r i c a l R e v ie w 13
; « E_V OH :=ss EUX 5 MC E J i DOS £ Ï £ X E 4 5EJC 33B EARLEY POWER STATION l£ I A joint bay showing HENLEY 1.0 sq. in. 33 kV single-core : i-'- cables and multicore control cables. All main and auxiliary cables for Earley Power Station were supplied and installed -Qg by Henley’s. These include 33 kV, 3.3 kV and low voltage cables, together with sealing ends, straight through joints and specially designed terminal boxes, for auxiliary and C £> control circuits. (Photo by courtesy of C.E.B.) HENLEY
x<> Ca b l e s * -5Ê FAMOUS FOR OVER A CENTURY EJ*: 4* r W T HENLEY’S TELEGRAPH WORKS CO. LTD. a:# 5 1-53, HATTON CARDEN, LONDON, E C-1 ^ |4 Electrical Review December 20, 1946
PREMIER
¿ - - / l e
ELECTRIC HEATING APPLIANCES
Supplies are still limited but distri bution is being carried out as fairly as possible. December 20, 1946 E l e c t r i c a l R e v ie w 15
THE ENGLISH ELECTRIC COMPANY LTD.
London Office: OUEEN’S HOUSE. KINGSWAY. LONDON. WC.2 INDUSTRIAL MOTOR WORKS > • . BRADFORD EOîNBUPiCM C^STUL
EDINBURGH CASTLE
The Castle stands on a precipitous height, dominating the capital city of Scotland, and was formerly the seat of the Scottish Kings
CRYSE
MADE IN ENGLAND l a m f z A
F I FT Y Y E A R S O F QUALITY & SERVICE & X *vn cJie4 BIRMINGHAM BURY ST EDMUNDS LEEDS LONDON BRIGHTON CARDIFF LEICESTER MANCHESTER BRISTOL GLASGOW LIVERPOOL NEWCASTLE
YSELCO LIMITED, KEMPSTON WORKS, BEDFORD LIVERPOOL ‘14 • BROAD GREEN • E lectrical Review
1946 , , 20
P o ó t - U / á t
ELEXCEL LTD • VICTOR WORKS ELECTRIC ELECTRIC IRONS December A t r r r 1 18 E l e c t r i c a l R e v ie w December 20, 1946
A N EW and comprehensive List of SLIDING RESISTANCES and DIM M ERS is now available on application
THERE HE STANDS—symbol of authority in an orderly World — controlling — directing — obeyed because absolutely trustworthy and reliable. What a fitting com parison with BIRCH RESISTANCES, Arm s of the Ohm’s Law. Backed by many years of practical experience in which their reliability has been tested under all conditions, BIRCH RESISTANCES, in their various applications, stand up to their job and can always be depended upon to provide specified service because of their first-class workmanship.
Please call upon us to help you solve any Resistance problem.
Resistances wf^ ¿a*
May we quote you for any of the following:— DIMMERS — REGULATORS (Field, Shunt, Voltage) — RESISTANCES (Arc Lamp, Charging, Regulating, Sliding) — RHEOSTATS — ELEMENTS and SPIRALS. ASBESTOS WOVEN RESISTANCE NETS AND GRIDS
H. A. BIRCH & CO. LTD., Wllohm Works, Wood Street, WILLENHALL, ST A FFS. Telegrams: “ W i L O H M ” Willenhall. Telephone: Wlllenhall 4 9 4 -4 9 5 December 20, 1946 E l e c t r i c a l R e v ie w 19 FUEL ECONOMY..
PROTECTED efficient, silent
reliable, compact
power unit, giving
untiring service
BROOK MOTORS LTD HUDDERSFIELD ENGLAND
______2 0 E l e c t r i c a l R e v ie w December 20, 1946
Do you want to save costs, labour and trouble ?
Bring your electricity to the machine and not your machine to the electricity. Our B.B.T. Trunking System is the modern method of supplying electric power to motorised machinery.
£ B.B.T. Trunking is totally enclosed, steel clad, fire resisting. 0 B.B.T. Trunking is adaptable to any machine area and provides electric power every two feet. * ELECTRIC SUPPLY brought to any desired position through enclosed Bus-Bars and fused tapping-boxes. % MOTORISED MACHINERY red from B .B .T . can be re-arranged at will to suit prevailing production requirements. up to joo amps. 0 B.B.T. Trunking is built on the unit principle and can be £ B.B.T. Trunking is standardised extended readily. in 12 ft. lengths : Overall 3 Ph. 3 wire . . . 9$" x 3I" 9 B .B .T . Trunking can be 3 Ph. 4 wire . . . 11" x 3^" installed well ahead of motorised machinery since the precise 9 B.B.T. Trunking is approved position of machinery need not and used by Government be known in advance. Departments.
STANDARD ROAD, NORTH ACTON, LONDON, N.W.10. te/. ELG ar 6601 December 20, 1946 El e c t r ic a l R e v ie w 21
To see oursets as ithers see usI
Hoots Toots ! (says the M .D . in what he imagines to be a Scots accent). A gey clever laddie was oor Rabbie. If ye could see yoursel’ the noo, ditherin’ and mitherin’ wi’ that auld puddock of a tool and michty pleased wi’ yoursel’, nae doot ! D ’ye no ken that therre are fine wee toolies workin’ wi’ elec- trricity and such that wad dae your worrk in hauf the time at a huge savin’ o’ bawbees ! Losh, mon, if ye could juist see yoursel . . . !
C or, stone the crows mate I If you could take a gander at yerself you’d take a runnin’ jump into the Frith of Froth !
DESOUTTER Specialists in Lightweight, Pneumatic and Electric Portable Tools
Dcseutier Bret. Ltd. (Dept. R ). The Hyde, Hendon, London, N .W .9 Telephone : Colindóle 6 3 4 6 J- 8 -9 . C.ILC.X65 2 2 EtECTitiCAL R e v ie w December 20, 1946
P
------<• VOUR ELECTRICAL WORK AND BE SURE------Sole M anuf acturers : DURATUBE £ WIRE LTD., FELTHAM, MIDDLESEX
/ts possible to turn a hair on a PULTRA MICRO-LATHE
The ability to perform such a delicate opera tion is evidence of the efficiency and versatility of Pultra Lathes and their equipment. They are ideal for all small work calling for maximum accuracy.
Write for Catalogue CPA.
*ANCHESttR
PU LTRA LTD. 24.GRAVEL LANE, SALFORD 3.MANCHESTER Phone: BLA. 9/8/. » Decem ber 20, 1946 E l e c t r i c a l R e v ie w 23 Always specify 'ERSKINE HEAP' Switchgear
1 KSKINL HEAPsC-L1
EH .534 24 E l e c t r i c a l R e v ie w December 20, 1946
U t l t
l u l l , _
7 lgC fu/atorf
For Motor*. Generator* and Alternators. Also as Series Regulators for voltage, heat and speed control. W e shall be pleased to send full particulars and prices on request. And remember, the advice of Cressall Technicians is always available. CRESSALL "H w HAMPTON WORKS is the Registered Trade Name of (STAM P NCS)/0 ) L I M I T E D THE CRESSALL MANUFACTURING CO. LTD. P R E S S WN O R K. \ X y E X P E R T S Tower Street, Birmingham 19. Telephone : A STon Cross 3463-4. TW YNING ROAD, STIRCHLEY, BIRMINGHAM Telegrams : 44 O HM IC," Birmingham. Tel.: King’s Norton 2901 (3 lines). Gram :: Radiagills, B'ham.
J t n n d i y
quick-fU ti*)’
n o so ld e r o r to °k -
n o b a ń n 9 < *a i v i t a k
fo’ bulk .upp»« ‘"or°VM orrU and LSBSr.sT.'SSS RECORD ELECTRICAL CO. LTD. BROADHEATH • ALTRINCHAM • CHESHIRE T e l.: Altrincham 3221/22. Grams: “ Infusion,” Altrincham London Office : 28, Victoria Street, S.W .I December 2 0 , 1946 E l e c t r ic a l R e v ie w 25 E l e c t r i c a l R e v ie w December 20, 1946
> S $ * n i ,e a r * " »
You must have BRITON LAMPS
John Ismay & Sons Ltd. 10 Bedford Street. Strand, W.C.2
W i T H I n d u strial H igh ★
V o ltage D istribution
a n d P u b l i c S u p p l y
By E. J. BARROWS, A.M.I.E.E. A SIMPLE AND A thoroughly up-to-date work explaining ATTRACTIVE METHOD OF the basic principles of high voltage UNIT VENTILATION distribution in industry, and how the assessment of short circuit values can be made from normally available system data and with a minimum of mathematics. A new book of immense value to works engineers, foremen and charge-hands In large industrial plants . _ -• •* -•,Vr V 15s. net
VENT-AXIA LTD., 9 VICTORIA ST., S.W .I T e le p h o n e : A&Bey-'5168-9 * A n d a t GLASGOW MANCHESTER, BIRMINGHAM,’ LEEDS 'k PITMAN
PARKER STREET,-KINGSWAY, LONDON, W.C.2 December 20, 1946 E l e c t r i c a l R e v ie w 27
NEW 6 INCH DIA MOVING IRON INSTRUMENTS FOR A.C. SWITCHBOARDS
e n t In d ic a t io n SMALLER INSTRUMENTS o n a LARGE SCALE
REYROLLE HEBBURN-ONTYNE ENGLAND E l e c t r ic a l R e v ie w December 2 0 , 1946
ELECTRICAL APPLIANCES
In the months to come there are many obstacles to be surmounted before our production will È È û é t meet the demand for our goods. During this difficult period we will keep faith with our friends in the industry by ensuring as fair a distribution as possible.
Mdge RoaV Lower Sy^enÎam , S E.26*
Pulley wheel to carry control cables for rudder and ailerons on Horsa glider, machined from Bakelite Laminated.
BAKELITE TREFOIL
HART BATTERIES FO R ------¡m , ELECTRIC J i g l g a POWER ( WOODS OF COLCHESTER Lto LIGHTING J s S l M t INSTALLATIONS
An Associate Company of The General Electric Co., Ltd. o f England B Y APPOINTMENT Bralswick Works Accumulator Makers to H M. The King, Member of l Colchester HART ACCUMULATOR CO. LTD. AND AT LONDON, BIRMINGHAM, ‘ InFIAl MAR3 HCATE LANE. STRATFORD, LONDON, E.I5 . CARDIFF. GLASGOW & MANCHESTER Telephones ; MARyland 1361/3 Branch«« at Birmingham, BrtotoL Oork, Dublin, Q lainw ManebMl«r. 1Uw*aAtl»-«D-TyT»e. Hottinrhatn tod WMtmlDaUr December 20, 1946 E l e c t r i c a l R e v ie w 31
' m a XLUM e ’ OVERLAMP REFLECTOR L IF T , T U R N A N D L O W E R O V E R T H E LAMP
Don't let dirt spoil your Lighting Schemes INSIST ON "AXLUH e ' OVERLAMP REFLECTORS THEY ARE EASY TO CLEAN !! CONSULT— VERITYS LTD. ASTON - BIRMINGHAM 6 L O N D O N & EXPORT : Telephone : Temple Sir 3835/6 GLASGOW Telephone : Central 1250 B IR M IN G H A M (Sales O ffice) „ Midland 5166/7 M A N C H E S T E R „ Blackfriarj 5844/5 B R IST O L .. Bristol 21928 LEED S „ M orley 30 NEWCASTLE-ON-TYNE Telephone : Central 22022 32 E l e c t r i c a l R e v ie w December 20, 1946
4 5 t f e m t e x p e d i e n c e
More than 45 years’ experience is behind every Scott Motor, and the ability to run under extreme con ditions is one of the fundamental advantages of Scott Motors. By installing Scott Motors you are assured of constant trouble-free running.
HUGH J. SCOTT & CO (BELFAST) LTD • VOLT W ORKS • BELFAST • NORTHERN IRELAND.
pBff" —------■— - ' ’ — Makers of Synthetic COX-WALKERS LTD. (IMPREGNATED AND COATED) Established 1880 Manufacturers of
FIRE ALARMS SOLENOIDS SWITCHGEAR, ETC. ELECTRIC LOCKS AUTOMATIC VOLTAGE REGULATORS
WATCHMAN’S TELL-TALE CLOCKS up to 40 Stations, complete installation.
HEAVY DUTY ALARM BELLS—indoor and outdoor weatherproof (Standardized by one of the largest banking concerns in the country).
NORTH EASTERN ELECTRIC WORKS DARLINGTON •P H O N E ; 2387 ’GRAMS : COXPAR ” December 20, 1946 E l e c t r i c a l R e v ie w 33
For new building projects specify
RUBBER INSULATED CABLES
SIEMENS ELECTRIC LAMPS AND SUPPLIES LTD., 38/39 Upper Thames St., London. E.C.4. Branches at Belfast, Birmingham, Bristol, Cardiff, Dublin, Glasgow, Leeds, Liverpool, Manchester. Newcastle-on-Tyne. Nottingham, Sheffield. Read Vo«» Mot» (Ha.<33319 V3nt) 3 4 E l e c t r i c a l R e v ie w December 20, 1946
CARPENTER
Main features of Standard Model: High Speed. Short transit time—normally below 1 millisecond. Contact gap a function of input power, hence small distortion almost down to failure point. High contact pressures. No contact chatter. High sensitivity — robust operation at 5mV.A. at 100 c/s. or 0.2nW.D.C. Great ease of adjustment Magnetic bias adjustment giving absolutely smooth control. Balanced armature—hence immunity to considerable vibration and no positional error. DIMENSIONS IN COVER 2 1 1 ,^ - 1 4^: Weight toith standard socket: 2 2 ozs. Complete details available on request.
TELEPHONE MANUFACTURING Co. Ltd HOLLINGSWORTH W ORKS, DULWICH, LONDON, S.E.21 Telephone: GIPsy Hill 2 2 11 (10 lines)
A WIDE RANGE OF m m Re g in o ea 1 laac M ark BRASS MOULDED OKERIN AND WAX DI-ELECTRICS RUBBER BUSHES —created in our own laboratories and manufactured in our own works— supplies almost every requirement of Electrical Industry. Grades have been designed for operation under the most severe and varied conditions, and many are resistant to mould and fungus growth.
Special types are evolved as new demands arise, and technical discussion on manu ★ facturers’ problems is welcomed.
M o u ld e d KuDDer Telephone Temple Bar 5927. PROMPT DELIVERY Astor Boisselier & Lawrence Ltd. Sales Dept. : Norfolk House, METWAY Industries LTD. Norfolk Street, London, W .C.2 King Street, Brighton. I. Sure«. 'Phone : Brighton 44S6 December 20, 1946 E l e c t r i c a l R e v ie w 35
Write for this Data Sheet
‘ We can give you facts about A lum inium ’ their amenability to machining, forming, has been our advertising theme for some welding and anodising, are indicated. time. Now you can have our Data Sheet The general notes touch briefly on alloy —full of facts about our w rought and cast ing; resistance to corrosion; machining alloys; accompanied by useful general and polishing; welding and soldering; notes. It provides, in handy form, answers frictional properties; resistance to dent to many questions raised by engineers ing; anodising; and forming, pressing and and designers, and will prove a very use deep drawing. ful reference. If additional information is required, our Technical Development Department is always at your service. NORTHERN ALUMINIUM The Wrought Alloys table shows approxi mate composition, principal specifica COMPANY LIMITED tions, and mechanical properties. The corrosion resistance of these alloys, and Banbury, Oxon. Makers of NORAL Products
B 36 E l e c t r i c a l R e v ie w December 20, 1946
The C U l - h e a t HOTPLATE CONTROL
# Helps to sell your cookers. Reduces hot-plate maintenance. # Reduces peak-Joad. 9 Improves cooker load factor. 9 Is the only SATISFACTORY simmering device. 9 Costs only 21/- (subject). IMMEDIATE DELIVERY. tyftte tun) fo r Je, c/utfST/of/o
SUNVIC CONTROLS LTD., STANHOPE HOUSE, KEAN STREET, LONDON, W.C.2 Phone : TEMple Bar 8202
TAS/SCI18 December 20, 1946 E l e c t r ic a l R e v ie w 37
Potato Strawberry Plum Daffodil
King Edward Royal Sovereign Victoria King Alfred TRULY REGAL
Tin* ' B V ’ U n it
We have no!, as yd, sought permission to apply the soubriquet
‘ REX ’ to our famous unit, though, to those aware of its sterling
performance, we think we might claim it was ‘born to the Purple’.
Meanwhile, we take this opportunity to wish our many friends in
the Industry a Happy Christmas and a prosperous New Year.
¿ ¿ S P f e , / SWITCHGEAR SPECIALISTS — E l e c t r i c a l R e v i e w December 20, 1946
Advt of The General Electric Co., Ltd., Magnet House, Kingsway, London, W.C .2 x - 'i.'i v r n u c r z.v», i7*tu LLCL I R e v i e w 39 — oAVENSEt — PLATING RECTITIERS D e s ig n e d - to FINISH the job T H E Davenset Plating Rectifier has been developed in collaboration with International Corrodeless Ltd., to provide, by means of static rectification, a low voltage, heavy current supply for application to any electro-chemical process The Selenium Metal Rectifier elements and the supply transformer are immersed in oil and totally enclosed in a steel tank. Cooling is by a thermal syphon system through steel tubes Davenset Plating Rectifiers provide the perfect equipment for all electro-chemical depositions and cleaning purposes
Full particulars on request
Sole Concessionaires in Gt. Britain and Northern Irela n d , o f Davenset Plating Rectifiers only
INTERNATIONAL CORRODELESS LTD. LOGKFIELD AVENUE • ENFIELD • MIDDLESEX
MANUFACTURED BY
DAVENSET ELECTRICAL WORKS, LEICESTER. 4 0 E l e c t r i c a l R e v ie w December 20, 1946 We supply you with
extra
salesman
A V o v , ''“ ,ion ‘> 0s v hr i d with interest. i(Jed lo lThe gUests, *j ker h a s now debate,!room before, th end ot tne - eUhe Archbisn , ning That will 8 ^1 Oxford, the V the views of most! lhe Bishop- \ \ J where the British i Richard ^ TiiJw of yesterday's sentattvtT use1 ! oot f C w o m m v o n s , yet had tt s.* I
R P R IS 1 -,ly w o rd e d ; % b y surp, part by tl \ o f e o o i > * ne, somewhere, is all the time seeing doing a job of selling. Try to supply every dvertising, with its slogan : “ Kye in ucmaiiu.demand. Send for yourvonr full ful quota of these cket, saves your pocket.” popular shilling lamps. y one of these countless Kye ads, (Now selling at 1/3 with tax.)
THE ONLY BRITISH SHILLING KYE LAMP
backed by years of consistent National Advertising
CROMPTON PARKINSON LIMITED, Electra House, Victoria Embankment, London, W.C.2 December 20, 1946 E l e c t r ic a l R e v ie w 41
METROVICK PRODUCTS include : Steam Turbine» Steam Condeiuer* and Auxiliaries Turbo-Generator» Turbo-Gear* Turbo-Blower* and Compreuor* Evaporator* Turbo-Electric Propulilon for Ship* Water-wheel Generator» Rolling Mill Equipment Mine Hoists 4 Conveyor* Sub-Stations Automatic Sub-Stations Mobile Power Stations Rectifier» Converter» Transformers— Power Distribution Flameproof
S— 2500MVA 440V—220 kV. Oil-Immersed Air-Blast Outdoor Cubicle and Truck Metaldad Flameproof Switching Station Equipment Surge Diverted Meters— Walt Hour 4 Prepayment Recording Polyphase & Frequency Instruments— Voltmeters & Ammeters W att Meters Miniature Air Velocity Light Measuring Relays for— feeder Protection Apparatus Protection Supervisory Control Centralised Control Battery Charging Protective Systems A.75MV A. three-phase, Relay Testing Equipment U ,000/70,500-voh, Thermostats transformer. One of Voluge Regulators Industrial Heating several for Fulham Boiling Plates Power Station. Induction Furnaces Motors & Control Gear far ; Power Station Auxiliaries Steelworks and Foundries Oil Wells and Refineries Ships and Dockyards Ships' VcntllaUon Machine Tools Woodworking Machines In every electric power system Textile Mills Paper and. Rubber Mills Printing Machinery Pumping and Drainage transformers are a vital link. Compressed Air equipment ! Heating and Ventilating Lifts. Cranes & Conveyors Laundries and Bakeries Pottery Making For continuity of supply you can Chemical Industry Farming equipment Domestic Appliances depend on Metrovick products. Welding Equipment— Arc-Welding Sets Atomic-Hydrogen Sets Resistance Welders Manipulators Electrode* Electric Traction— Locomotives Motor-Coo ch Equipments Diesel Electric Locos Diesel Railcars Trolleybus Equipments Tramcar Equipments Shunting Locomotives Gearing for Traction Drives Railway Signalling Equipment Lamps and Lighting Research Equipment— Impulse Generators Electron Microscopes Laboratory Equipment Radar High Vacuum and ELECTRICAL ' §j ------¡ ¡ 1 1 2 C O . LTD . X-Ray Apparatus TRAFFORD PARK MANCHESTER 17. Electronic Apparatus Fabric Bearings Branches. Representatives and Agents all over th e worlcL 4 2 E l e c t r i c a l R e v ie w December 20, 1946
i t S
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§ LANCASHIRE DYNAMO & CRYPTO LTD. V V " / e s d e n ;> Trafford Park . . Manchester I
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F H-P.and p A c - *nd D r A C & D C rG°Pe"erFan Mft M°‘°rs , Alternators and Synchronous Motors. eared m0, ° t0rs- A.C. & D.C. Motors including Flameproof, ° t0r (Jn/ts. Gasworks, and W eatherproof Types.
CRVPTO If»- NW.„
N„„h C.r»!*' - '
n . n Food Preparing E,eCtriCa,’Y ^ a r i c Hand & F - D r ie r s .
MaChi General Catering * « * « * " * • uccem oer zu, 1^46 hLECTRICAL REVIEW 43
COMPANIES MENTIONED BELOW
CRVPTON EQUIPMENT LTD
B r i d g w a t e r
These electrical products are known throughout the World for their MAXIM U M EFFICIENCY AND UTMOST RELIABILITY 4 4 E l e c t r i c a l R e v i e w December 20, 1946
The call upon equipment lor electrical supply is heavy and increasing.
When production and maintenance resources are strained it is more than ever essential to ensure safety and freedom from trouble by installing only the best obtainable transmission material. s p e a t y C.M.A.
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MEMBERS OF THE C.M.A.
The Anchor Cable W . T. Glover & Co. Ltd. Liverpool Electric Cable Pirelli-General Cable Co. Ltd. Greengate & Irwell Co. Ltd. Works Ltd. (General British Insulated Rubber Co. Ltd. Electric Co. Ltd.) Callender’s Cables Ltd. The London Electric St. Helens Cable & W . T. H e n le y’sTelegraph W ire Co. and Smiths Ltd. Connollys(Blackley) Ltd. Rubber Co. Ltd. W orks Co. Ltd. The Craigpark Electric Siemens Brothers & Johnson & Philiips Ltd. The Macintosh Cable Co. Cable Co. Ltd. Ltd Co. Ltd.(Siemens Electric Crompton Parkinson The India Rubber, Gutta- Lamps and Supplies Ltd.) Ltd. (Derby Cables Ltd.) Percha & Telegraph The Metropolitan Standard Telephones Enfield Cables Ltd. Works Co. Ltd. Electric Cable & & Cables Ltd Edison Swan Cables Ltd. (The Silvertown Co.) Construction Co. Ltd. Union Cable Co. Ltd. _ Advt. o I (he Cabla Makars' Association, High Ho/born Housa, 52-54 High Ho/born, W .C.I. Ho/born 7633 Lsc^cniutr ¿yj, ł l e c t r i c a l R e v i e w 4 5
If starters could reproduce themselves the present heavy demand tor M.E.M. motor control gear would be met without delay. But as it is, labour, material and extensive planning are needed. Yet in spite of shortages, controls and restrictions, supplies from the M.E.M. Factory are being steadily increased and goods are going out as quickly as possible to the whole salers. Their’s is the job of distribution and they are doing it magnificently in allocating all available goods fairly and equitably. So keep in touch with your wholesaler and he will see that your needs are met as quickly as supplies permit.
c MIDLAND ELECTRIC MANUFACTURING CO. LTD., TYSELEY, BIRMINGHAM, 11
SWITCH, FUSE AND MOTOR CONTROL GEAR, ELECTRIC FIRES AND LOCALISED LIGHTING EQUIPMENT
London Showrooms & Sto res: 21-22 Rathbone Place, W .l : M anchester Showrooms & Stores: 48-50 Chapel Street,Salford, 3 4 6 E l e c t r i c a l R e v ie w December 20, 1946
A Swan Brand advertisement catches your customer's eye and she remembers that Mrs. So and So, her neiahbour, who bought a Swan Brand product long before the war still uses the product every day. That customer comes to you. Don’t disappoint her when she asks for “Swan Brand”—don’t disappoint yourself by having to offer an alternative. Swan Brand advertising is increasing, potential custom is increasing—make sure you can cope. “Swan Brand” quality needs a minimum of sales-talk and sells again and again.
ELECTRICAL APPLIANCES & GROUND BASE ALUMINIUM WARE FOR HOT PLATE
JLPITT & SONS LTD. SWANSEA WORKS, BIRMINGHAM U XV? , December 20 1946 E l e c t r ic a l R e v ie w 47 TRUCK " p .
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SUPPLIED IN CAPACITIESUPTO IIK V 2 5 0 M V A »ELECTRIC CONSTRlimN WOLVERHAMPTON C o lM - TELEPHONE 21455 (7 LINES)
London Office : 61 Catherine Place, W estminster, London, S.W .l. Telephone : Victoria 3482-3 4 8 E l e c t r i c a l R e v ie w December 20, 1946
4
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t t - h o u r ETER
A development of tin well-known NE Meter
• SIMPLE adjustments The NE4 Meter includes adjusting devices that are quickly and easily operated without special tools.
• FLAT LOAD CURVE The high standard of performance that characterises two-element meters is also a feature of this 3-phase 4-wire meter. •SPACE SAVING Though the meter has three separate elements, it Write for leaflet occupies no more panel space than the standard two- No. 356/8-1. element meter.
G/A30I December 20, 1946 E l e c t r ic a l R e v ie w 49
HIGH-SPEED » ARC CONTROLLED * SINGLE-BREAK DESIGN
750 and 1,000 M V A 22 and 33 kV 400— 800 A m p. Fully tested and Certificated in accordance with BS 116/1937, Pt. 2
The type E.5 low-oil-content circuit breaker is of the completely phase segregated, arc-controlled horizontal single-break design. The breaker mechanism is simple, robust and trip-free, and has a high-speed operating characteristic Type F.E.5 metalclad units of the simple or duplicate busbar pattern are arranged to incorporate the type E.5 circuit breaker, each assembly com prising a completely phase segregated, fully interlocked metalclad equipment 50 E l e c t r i c a l R e v ie w December 20, 1946
Do you need "distilled" wafer?
Permutit 11 Deminrolit" Process cuts cost as much as 95%
(y/ ANALYSES OF WATER BEFORE AND AFTER TREATMENT BY PERMUTIT 'DEMINROLIT' PLANTS IN COMMERCIAL USE. (Hote-All figures lnjiarts per 1 0 0 .0 0 0 )
Plant No 1 No. 2 No . 3
Water Crude Treated Crude Treated Crude Treated
Cations ; Calcium Ca 3.2 9.4 10.7 Magnesium Mg 0.8 - 0.36 - 1.09 - Sodium Na 0.46 0.23 1.0 0.31 1.66 0.44
Total 4.46 0.23 10.76 0.31 13.45 0.44
Anions
Carbonate C03 4.2 0.24 12.4 0.29 10.5 0.57 Chloride Cl 1.8 0.06 2.5 0.12 2.84 0.30
Sulphate SO4 1.35 - 3.48 0.03 11.95 -
Nitrate NO3 - - - - 1.15 - Total 7.35 0.30 18.38 0.44 26.44 0.87
Total ions in solution 11.81 0.53 29.14 0.75 39.89 1.31
COST per 1000 gallons 5 2 2d 9 .83d 16.5d
The table shows the composition of some types of water before and after treatment by Permutit’s “ Deminrolit ” Process. Water similar to a distillate is produced by this process at a fraction of the cost. Where distilled water was too expensive you can afford “ Deminrolit ” water. The process has been in practical use in Great Britain for over 7 years. Write for technical publication “ Distilled Water without D istillation ’* to PERMUTfT Company Limited Dept T.W., Gunnersbury Avenue, London, W.4. Chiswick 6431. AJ.LE.V_. 1 ILIL./VL R e v i e w 51
• HIGH OVERLOAD CAPACITY O SMALL SIZE AND WEIGHT • WIDE RANGE OF WORKING TEMPERATURE • SMALL TEMPERATURE/RESISTANCE VARIATION
Telephones and Cables Limited (RECTIFIER DIVISION) OAKLEIGH ROAD, NEW SOUTHGATE, LONDON, N.ll Telephone : ENTerprise 1234. Teiefirams : “Essteecee. Telex. London." c 5 2 E l e c t r i c a l R e v ie w December 20, 1946 BABCOCK BOILERS at NORTH TEES Power Station
AT the N orth Tees “ B ” Power Station of the North-Eastern Electric Supply Company Ltd., there were recently installed two B. & W . High Head Boilers each for an evaporation of 180,000 lb. per hour at 475 lb. per sq. inch and 725° F. The boilers are fired with pulverised fuel through vertical burners direct from Type “ E” Mills and are equipped with Bailey Hopper Bottom Furnaces, Self-draining Superheaters, Flash welded Economisers and Tubular A ir Heaters, the boiler drums being of fusion welded construction. Messrs. Merz & McLellan acted as Consultants for the extensions at this Station.
THE ILLUSTRATIONS SHOW
T O P . A view of the B. & W . Type “ E” M ills soot blower control panel. in the basement. LEFT. — A side sectional elevation through PJnAA the boiler. RIGHT.— A view in the firing aisle showing the burner controls and some of the automatic BOTTOM.—One of the boiler control electrically operated soot blowers with the panels.
BABCOCK & W ILCOX LTD., BABCOCK HOUSE, FARRINGDON ST., E.C.A ELECTRICAL REVIEW Managing Editor : December 20, 1946 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor : Contents C. O. Brettelle, M.I.E.E. J. H. Cosens Page Page EDITORIAL—Youth and Age 1005 REPORTS- A R T IC L E S — I.E.E. Benevolent Fund 1019 E.I.B.A. Home .... 1020 Making Penicillin 1007 Radio Interference .... 1020 Neutral-Displacement Protection. By Progress at Chester 1022 E. A. Burton, A.M.I.E.E. 1012 N .W . England Scheme 1031 An All-Electric House. B/ S. Parker Contracting Industry Agreements 1031 Smith, C.B.E., D.Sc. 1027 Fuel Economy in Great Britain . 1032 Current Transformer Testing. By Diesel-Engine W orking Costs 1032 G. W . Stubbings, B.Sc., A.M.I.E.E. 1037 Municipal Reports .... 1040 Increasing Production 1039 Training Supervisors. By “ Cincin NEWS SECTIONS — n atus ” .... 1041 Personal and Social, 1017; Parliamen ta ry , 1021; C o m m e rc e and- 4, VIEWS ON THE NEWS . 1016 1023; Electricity SupfljrQT*/ PAPERS AND ADDRESSES- Financial, 1033; Contracf Lightning Protection. 101 I N E W B O O K S y 1028 Rectifiers and Variable-Speed Drives 101 I Electricity and the Community 1031 hniki Classified Advertisements Electrodepositors’ Technical Society 1032 Lighting in Industry 1038 Index to Advertisers % EDITORIAL, ADVERTISING & PUBLISHING OFFICES : Dorset House, Stamford St.i &London, S.E.I Telegraphic Address : “ Elecrev, Sedist, London.” Code : ABC. Telephone No. : Waterloo 3333 (50 lines). Registered at G.P.O. as a Newspaper and Canadian Magazine rate of postage. Entered as Second Class Matter at the New York, U.S.A., Post Office. Annual Subscription, post ree : Great Britain and elsewhere (except Canada), £2 7s. 8d. ; Canada, £2 3s. 4d. Cheques and Postal Orders (on Chief Office, London) to be made payable to ELECTRICAL REVIEW LTD., and crossed “ Lloyds Bank.”
The popularity of Vectalr Convection Heating la proved by the ever increasing demand for these Units. • Electric Vectairs warm every corner of th e room. • There Is complete freedom from stuffiness. • High conductivity of the large heating surface area provides operational efficiency. Wide range of Unit sizes to meet every requirement and thermostatic control fitted if required.
V e c f b i * . ELECTRIC CONVECTION HEATING BRITISH TRANE CO. LTD. V E C T A IR HOUSE.CLERKENWELL CLOSE.LONDON.E.C.I Telephone C L £ « K £ N w e l l S 864-38.J6 T eleg ra m s c h a b t r a h e SMITH LOteoom 54 E lectrical Review December 20, 1946
“It has that ‘Be
T V the critical light of / Trade circles a name can acquire surprising personality, become a hall mark or a stigma. We have always been content to abide by the verdict of those best qualified to judge us.
Pattern No. 11 Queen Anne Pedestal
MEASURE OF A PRE-EMINENCE!
In many built up areas a high p ercen tag e of houses have Sangamo W eston Meters. Why? Because Sangamo Weston Meters have proved to be faithful in service, giving operational precision, unfailing accuracy, and freedom from maintenance trouble. Their precision construction and perfect performance, resulting from years of specialisation, gives them the well-deserved pre-eminence they hold to-day. Quarterly - prepayment. Fixed charge or polyphase types. «\ £ a n m m c m e t e r s SANGAMO WESTON LIMITED ( f ENFIELD, MIDDLESEX Phone : Enfield 1434-1342 ELECTRICAL REVIEW THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872
Vol. CXXXIX. No. 3604. DECEMBER 20, 1946 9d. WEEKLY
Voutli and Age Vigour of the Electricity Supply Industry
HERE have been several jubilees of fittest for their purpose have survived. T recent years in the electricity supply In addition the small margin (if any) of industry. This has seemingly led to an revenue over expenditure in those days was impression on the part of those controlling a constant stimulus to the economic sense its political fortunes that it consequently that is indispensable to engineers. suffers from the disabilities of age—a In the fullness of time these men were viewpoint that is possibly based upon a succeeded by others trained in the same conception of the industry as a technically hard school, but better equipped static body, as many other industries are, theoretically and with more conventionally rather than as a robust and still vigorously demonstrable technical qualifications (to growing entity. which insufficient weight was formerly It is, of course, true that its present attached), but not more than the increasing advanced state owes very much to the complexities of their work demanded. work of pioneers—men who reached positions of responsibility early in life and Later Achievements devoted their main energies to the develop With the wider field catered for by ment of the industry. They started from electricity, the need was for a thorough scratch without receiving the same aid as grasp of technical and administrative their successors from well worked out principles in order to co-ordinate the work academic curricula or from still unwritten of subordinates specializing in the details textbooks and institution papers. appropriate to divers branches. That the younger men of all grades have proved Evolutionary Years equal to their heavy though somewhat Taking up their duties when, for the different responsibilities has been proved most part, d.c. was predominant, they had by the accelerating rate of progress, and to learn to think vectorially by force of by the diminishing cost of electricity for the circumstances that their own labours many years before the war. Great as was helped to create. The inevitable defects the scope in the early days for the exercise in their technical education they turned to of their abilities, the potentialities are still advantage, since the need to fill in the gaps greater now, since each new development called for an exercise of imaginative opens up further vistas to provide expand powers that enabled them to make the ing opportunities. utmost use of the knowledge they did Young engineers to-day have a vantage possess. This kept their minds on the alert point, as it were, from the shoulders of for new developments and their outlook their seniors, whose experience and judg youthful. The large number of separate ment are placed freely at their disposal. undertakings was not without its merits Probably, they are often surprised as well then in enabling them to work out a as pleased at the trouble taken to aid and diversity of practices from which the encourage their efforts by those of high 1006 E l e c t r i c a l R e v ie w December 20, 1946 standing in the engineering world. The connection with the “ Fuel and the Future reason is twofold: First there is natural Conference ” in October and is indicated solicitude for the future of the profession; by a loss of some 15 per cent of boiler secondly, it is the only way known to the capacity which was out of commission at older men of repaying the debt they the time of last winter’s maximum demand themselves owe on the same account to on the grid. their mentors of the past. In this way the youth of the electrical industry is Too much optimism in continuously being renewed on stable Atomic expecting rapid results foundations. Energy from any new scientific development may easily Some measure of the retard progress by damping down the Faith advance of the all-electric urge to make the most of what can be Justified idea may be obtained used now. In the Fuel Economy Review from Professor Parker for 1946 Professor M. L. Oliphant utters Smith’s article in this issue. His decision, a warning against neglect to exploit all little more than a score of years ago, to existing sources of power on the assump rely entirely on electricity for heating, tion that nuclear energy will soon make cooking and other domestic services, was them obsolete. While emphasising that an act of faith in his calling which was the British Commonwealth should play a not by any means general at that time. major part in the development of atomic In view of the present public demand for energy, he points to the likelihood of a electricity in the home—a demand that lapse of fifteen to twenty years before it owes much to such wholly satisfactory becomes a serious rival of fuel and then experience—the author would hardly find only in large plants whence it would be it necessary now to defend his faith as he distributed as electricity. The possibility did, even in the precincts of the Institution of this also depends on the absence of of Electrical Engineers, and to “ glory ” restrictions on account of military con in the charge of being an “ enthusiast.” siderations. I t has been the good Plastic fortune of the electrical Some anxiety exists Insulants industry to have been able Undertakings’ about the inflow into to rely upon such ready- Trainees electricity supply of to-hand, relatively inexpensive, multi enough engineers with purpose dielectrics as paper and natural good technical qualifications. The pro rubber. The range of their characteristics posal of Mr. H. Pryce-Jones to offer men is wide enough for most applications, but with previous good educational and it should ultimately be possible to call upon workshop training a two-years’ course the chemist to produce insulating materials with the Brighton undertaking seems a having the characteristics required for step in the right direction. His scheme is specific duties. This is one of the in encouraged by the Central Electricity ferences to be drawn from the “ inte Board, which even before the war itself grating ” paper on Plastics in Electrical afforded promising juniors opportunities Industry which Dr. Guido Haefely pre in its various departments, as Sir Johnstone sented before the I.E.E. Installations Wright (general manager, C.E.B.) has long Section last week. been interested in the subject. The Board is not only authorizing the charging of Some hope of an appreci- the salaries of the two Brighton trainees Boiler able reduction in generat- (E.P.E.A. Schedule, Class J, Grade 10) Availability ing troubles due to fouling to its monthly generating station account of boiler exterior heating but is also considering a national scheme surfaces was held out by Mr. Robert Foot on similar lines. in his presidential address to the British Coal Utilisation Research Association. If W e thank the many tests now being carried out fulfil expecta Compliments people who have sent us tions, there should be material improve of the Season seasonal greetings and ment in regard to the loss of steaming wish all of our readers a capacity from this cause. The seriousness very happy Christmas and a much- of the position was discussed by us in improved New Year. jffiussri'nicAi. R eview 1 00 7
Large-scale Use of Ultra-Violet-Ray Air Sterilization
ENICILLIN has been described as the boiler plant utilized to supply superheated P greatest medical advance since steam at 150 lb pressure for sterilization of anesthetics. Its discovery would, however, the fermentation plant, for the operation of have been of only limited value if means the distillation and recovery units used in the had not been developed for making available purification of penicillin and for general sufficiently large quantities to allow its factory heating, hot water supplies and general use. Such large-scale production canteen services, all the plant is electrically requires the aid of electricity, not only for operated. The five 10,000 lb per hr Edwin Danks S' e power but also for the provision of those sterile conditions which are essential to its boilers too are equipped with electrically manufacture. operated Hodgkinson stoker gear, Sirocco The largest penicillin factory in the world, induced draught fans (driven by five KTi r. 20-H.P. motors) and one 30-H.P. water pump. lb that which the Distillers Co. has established at the request of the Ministry of Supply at Speke, near Liverpool, d m has in fact a maximum 15 w dem and o f 1,200 kVA and a monthly con Eks sumption of about ¡BIS 670,000 kWh. The p I E supply from the Liver irJote pool City Electric Utah Supply D epartm ent is H ite stepped down from duff 11 kV to 400 V by two on © 1,500-kVA English Gni Electric transformers JH3»- fitted with Buchholz jalsfe safety devices. The h.v. and l.v. switch boards, which were also made by the English Electric Co., Induced draught fan layout in the boiler house. Our title picture at the have been attractively top of the page shows a view looking through a plate-glass window into the sterile area. Under the glass hood and stainless steel screen, bottles are finished in eau de nil. filled with penicillin solution by hypodermic syringe. Note the ultra Apart from the violet discharge tubes fitted into the glass ceiling 1008 E l e c t r i c a l ja e v ie w December 20, 194(5
The culture of penicillin is commenced in test tubes, the selected strain now used at Speke having been developed by treat ing an existing culture with X-rays and having the power to produce penicillin in much greater quantities than its parent. This culture (kept until required in fine sand) is mixed with a broth prepared from corn-steep liquor and a nutrient (lactose), the former being a by-product obtained
when whole maize is These air compressors produce half a million cu ft per hr of compressed digested in water in the air for fermentation purposes manufacture of starch. As the culture multiplies it is transferred to to 300-gal seed tanks containing more corn- larger and larger glass flasks, which have steep liquor. These tanks are water jacketed to be kept in a continuous state of agitation, to maintain the temperature at the optimum an electrically driven shaking machine being for fermentation and are provided with air used for this purpose. When growth of the lines to give the continuous supply of sterilized culture is sufficiently advanced, the flasks air which is essential to the growth of the are stored in refrigerators until required. moulds of this type without contamination. Sterilizers, hot-plates for evaporating Cambridge instruments record the pressure solvents, drying ovens, vacuum ovens for and temperature. estimating moisture content, furnaces for The corn-steep broth is sterilized in two ashing various materials, photo-electric tur- 10,000-gal steam cookers fitted with agitators (20-H.P. motors) and pumped (by 10-H.P. motors), together with (he culture from the seed tanks, to fourteen 10,000-gal water- jacketed fermenters, where the m ixture is maintained at a tem perature of 75 deg F. Besides the removal of the carbon dioxide formed, large quan tities of sterilized air have to be passed through the broth during fermentation, Ammonia compressors for circulating chilled water round the fermenters and for this purpose and seed tanks are driven by 175-H.P. motors four Beiliss & Morcom air compressors, driven bidometers for testing the concentration of by 550-H.P., 6,600-V, 250-r.p.m. Bruce penicillin, stirrers, pH meters, centrifuges Peebles autosynchronous motors fitted with and refrigerators are among other electrical Metro-Vick liquid starters each furnish equipment of the laboratories, which are 2,400 cu ft of free air a minute. air-conditioned, electrically heated and lighted All the air for fermentation is scrubbed by fluorescent tubes. in a series of steel towers 62 ft high. Air The contents of the flasks are transferred for the sterile area, after scrubbing, is December 20, 1946 E l e c t r i c a l R e v ie w 1009 sterilized by batteries of Hanovia ultra-violet to dissolve the penicillin from the carbon. lamps inserted in the trunking system. The solution of penicillin and acetone passes Chilled water compressors for circulating on to a concentrator, where various acid round the fermenters and seed tanks are and alkali solutions, used in conjunction driven by three 175-H.P. motors. with 15,000-r.p.m. centrifuges, eliminate the After several days, when the fermentation solvent. All the motors employed in this section of the factory are of flameproof design and the wiring is all carried out with Pyrotenax mineral- insulated cable. After filtration the penicillin goes in a
In these vacuum ovens the frozen solution of peni cillin is dried at extremely low temperatures. Armour-plated doors are needed to resist theterrific pull of the vacuum which is applied
bulk container holding about 10 gal (the pro ceeds of one 10,000- gal fermenter) to the sterile area where after final filtration it is filled into bottles and is complete, the fermenter contains approxi- dehydrated before distribution to the user, mately 30 tons of liquid broth in which is Automatic machines under a glass hood fill floating a large amount of spongy mycelium, the bottles (previously treated in an electric Dissolved in this large quantity of broth is sterilizer) to an accuracy of 0-01 cm at a a mere 3 to 4 lb of penicillin. Pumps (10-H.P. rate of 2,500-3,000 an hour, each bottle con- motors) bring the broth to a novel type of taming, after drying, 100,000 units o f penicillin rotary filter (1-H.P. variable-speed motor) from which the mycelium is removed as a continuous felt and the clear broth passes on to a large stainless steel tank fitted with high-speed agitators with 10-H.P. motors. Then a small quantity of finely divided activated car bon is added which rapidly absorbs the penicillin. Filter presses (3- H.P. motors) remove the exhausted broth and the carbon con taining the penicillin goes to a further stainless steel vessel where acetone is added Section of the high vacuum diffusion system 1 0 1 0 E l e c t r i c a l R e v ie w December 20, 1946 salt. A centrifugal switch varies the flow reduced to the specified content. Sterilized to the pipettes used for filling. vacuum-dry rubber stoppers are then in The bottles in trays then go to freezers, serted as quickly as possible in another room which reduce the temperature of the solution of the sterile area. An aluminium cover is to —74 deg F and so transform it to a block then machine-seamed over the rubber of ice. On transfer to high-vacuum ovens, stopper and the bottles are ready for o f which there are twenty, the ice is evaporated normal handling. From the moment the directly without going through the liquid bottles are washed and until they reach stage, this being necessary since penicillin in solution is very unstable to heat. The ovens are evacuated down to about 300 microns within five minutes by means of single-stage pum ps of the oil-sealed rotary type. After this rough evacuation, the dryers are connected to the high-vacuum manifold serv ing the diffusion pumps. These further reduce the pressure until dehydration is accomplished. Each dryer is fitted with a McLeod vacuum gauge. To relieve the strain on Air for the sterile area is scrubbed and sterilized in this unit, passing on through large ducts at a strictly controlled temperature the diffusion pumps, and humidity vapours leaving the high- vacuum manifold go through a pair of cold this point they are wholly untouched by hand. traps or low-temperature condensers in The sterile area in which the bottling and parallel. These are jacketed steel cylindrical dehydration are carried out comprises eight chambers set at an angle, provided with rooms with a floor area of 10,000 sq ft. revolving scrapers and refrigerated with Access is reached through a single door and ammonia to about -80-90 deg F. Ice that no one is allowed to enter without taking collects on the walls is scraped off and falls all the precautions normally practised before into an ice receiver at the same temperature. entering a hospital operating theatre. The Serving the two batteries of dryers are eleven whole of the ceilings and walls are glass-lined sets of diffusion pumps consisting of 4-in. and the floors are of impervious terrazzo. diameter units of a multi-jet design and built The area is fed through overhead ducts with of welded steel. Chlorinated hydro-carbons, air, controlled for temperature and humidity, having a lower vapour pressure than mercury, and sterilized by batteries of special Hanovia are used as the pumping fluid and are con ultra-violet discharge tubes lining anodized densed on the walls of the pumps and re-used. aluminium irradiation chambers in enlarged These diffusion pumps discharge to oil- segments of the ducts. The air maintains a sealed, rotary high-vacuum pumps which slight positive pressure to ensure that no compress the exhausted gas to atmospheric unsterilized air is admitted through the pressure and discharge it, thus enabling the single-entrance door. In every room and diffusion pumps to take hold. An important corridor numbers of similar Hanovia tubes feature of the backing-up pumps is the oil- fitted into the glass ceilings give direct ultra purification system which continuously re violet irradiation to the entire volume of air circulates all sealing oil to remove condensed in the rooms, thus dealing with any new water and other contamination. Otherwise, infection which might be introduced by the these would flash back into the system and occupants. All conduit, supply ducts, etc., raise the fore-pressure to a point where the are run above the dummy ceiling, and diffusion pumps could not operate. switches are fitted outside the sterile area. Bottles of penicillin salt remain in the Ultra-violet tubes are also provided in the vacuum ovens until the moisture has been dressing rooms. December 20, 1946 E l e c t r ic a l R e v ie w 1011
Testing of the finished product takes five three 4-cylinder ammonia compressors, and days, and to ensure that no contaminating three low temperature compound ammonia bacteria are present, injections are made in compressors. At this temperature the rabbits and mice. The animal house where material will retain its potency for at least these are kept is also supplied with air con a year. trolled for temperature and humidity, and The high-voltage electrical installation was sterilized by ultra-violet discharge tubes in carried out by the English Electric Co., Ltd., the duct, as for the main sterile area. The the power and lighting equipment being equipment here includes a Frigidaire installed by the Phoenix Electrical Co. refrigerator for storing penicillin, an electric (London), Ltd. The main power cables were instrument sterilizer and sterilizing ovens. supplied by the Liverpool Electric Cable After final approval the bottled penicillin Co., Ltd. is packed in cartons and placed in a cold We should like to thank the various room with a temperature of 35 deg F until members of the Speke staff for their help in dispatch, the refrigeration plant comprising preparing this article.
Lightning' P ro te c tio n Investigati ons in Eire
HE degree of protection against lightning records were kept the average annual total T to be afforded to any system of overhead cost of station damage due to lightning surges power lines is determined by economic con on the 110-kV system was less than 1-25 per siderations, based upon the frequency and cent of the cost of either of the protective severity of thunderstorms in the particular schemes mentioned. locality. Proper assessment of the risk to be These facts do not mean that protective guarded against is thus dependent upon the measures are entirely unjustified; they are availability of adequate local data. stressed merely to show that each case needs to It was to obtain such information that an be examined on its own merits and that local investigation was carried out by the Electricity data about the prevalence of lightning disturb Supply Board in Eire, an account of which ance are essential. is given in the paper presented by M r . R. C. Induced surges do cause trouble on lower C u f f e (E.S.B.) last week in London to the voltage lines (38 and 10 kV) and arrestors Transmission Section of the Institution of protect plant that would otherwise be damaged, Electrical Engineers. but the frequency of occurrence and crest- Average lightning faults per . 100 miles of current magnitudes are not known because line per year (110-, 38- and 10-kV systems) surge-recording devices are usually arranged to derived from ten-year records have enabled the collect information about surges resulting from author to map the variation of disturbances in direct lightning strokes. different localities of Southern Ireland. Observa tions appear to indicate that a large proportion of (38 kV line) arrestor discharges have values Rectifiers and Variable-Speed Drives below 1,000 A. Since it is usual to mount magnetic links so that only discharges in excess ERCURY arc rectifiers, with particular of 3,000 A are recorded, it seems that many reference to their use for furnishing arrestor discharges escape detection and could power to d.c. motors for variable drives, is the therefore cause erroneous conception of the subject of a paper prepared by M r . P. T . frequency of operation. C o w l e y for the Association of Supervising In 1938 the E.S.B. prepared estimates and Electrical Engineers. obtained prices for the provision of overhead The paper first describes the following types: earth-wires above the last half mile of all its glass bulb for 5 to 5,000 A, pumpless air-cooled 110 kV lines adjacent to stations and, altern steel for 500 to 10,000 A, water-cooled steel atively, for the installation of sets of arrestors tank for 2,000 to 20,000 A and more, single at the terminations of those lines. The costs anode steel Ignitrón for 1,000 to 20,000 A. of the two schemes would have been approxi The author then comments on the more mately the same. common methods of coupling the input trans For 70 per cent of that cost it would have former to the rectifier, briefly differentiating been possible to provide standby transformers between methods of regulating the speed of d.c. and some switchgear in respect of more than motors, and indicates how the output voltage 10 per cent of the total 110-kV transformer of a rectifier can be varied by grid control and capacity in service at that time. The economic phase shift. Diagrams illustrating the paper aspect is still more forcibly emphasized by the included a circuit outline of a complete single fact that during the ten-year period in which phase rectifier motor starter and speed controller. 1 0 1 2 E l e c t r i c a l R e v ie w December 20, 1946 Neutral-Displacement Protection New Type of Relay Equipment
HE neutral of a three- By E. A. Burton, ever, can arise as shown in phase high-voltage system Fig. 2a, when the supply end T A.M.I.E.E. is usually earthed, either of a circuit has been dis directly or through a current-limiting im connected by selective protection but remains pedance. Earthing should be at one alive due to back feeds from the receiving place only, generally the point of supply. end. The supply end being disconnected Where the neutral is earthed solidly, its from the neutral of the system, no heavy voltage cannot vary appreciably from that earth-fault currents can flow. The condition, of “ earth ” or zero potential, either under particularly in the case of a broken con normal or earth-fault conditions. Where the ductor, however, constitutes a hazard which neutral is earthed should be cleared as through a current- soon as possible by limiting impedance, disconnecting at the far with a reasonably end. The conditions symmetrical system shown in Fig. 2b are under healthy condi rather more difficult tions there is little or owing to the lower per no current in the earth centage displacement, connection, and the and special provision voltage of the neutral must be made for point is likewise prac disconnecting the sup tically zero with respect ply end. to earth. The method usually U nder earth - fault adopted to bring about conditions, owing to the disconnection of the impedance, the the far end (Fig. 2a) voltage between the is the provision at that neutral point and earth end of an additional or rises to a value nor Fig. I.—Vectorial relationship between system artificial neutral point neutral, SN , and artificial neutral, A N , displaced mally not greater than by E/3 or 33^ per cent. of high impedance to the phase-to-neutral earth. The voltage rise voltage (Fig. 1). This value is usually referred mentioned above can then be utilized, as the to as 100 per cent neutral displacement. need for selectivity does not arise after the The displacement occurs for earth faults sending end has been opened. It is very im on any part of the system and by itself portant, however, to introduce a time lag cannot normally be utilized for the selective between the incidence of the neutral-voltage disconnection of any particular faulty section. rise or displacement and the tripping of the Certain circuit and system conditions, how associated switch, in order to allow the
C ir c u i t C o n d it io n s N a t u r e o f F a u l t D isplacement ! S w i t c h O p e r a t io n s
per cent Transformer feeders in parallel Earth on one h.v. phase. If Sending-end PSt trips instan- on h.v. side at sending end only. conductor broken, both sides of 100 taneously on earth-fault pro L.v. sides paralleled. break earthed. tection. SSi trips on neutral Fig. 2a displacement protection after 10 sec.; circuit dead.
No current in sending-end Transformer feeder One conductor broken but not 50 earth-fault relay. PSt does (one circuit only) earthed. not trip. SSi trips if N.D. set suitably. Transformer feeder One conductor broken and (one circuit only) earthed on side remote from 33*3 As above for PSt and SSi Fig. 2b supply. December 20, 1946 E l e c t r i c a l R e v ie w 1013 selective protection on that or any other a voltage transformer or a low- faulty section of the network to clear. The capacitance condenser. If the former impedance to earth of this additional neutral- is used, the 110-V secondary supplies earth connection must be high, otherwise a standard induction relay in series multiple neutral-earthing conditions would with an appropriate resistance. This arise. The position is summarized in the type of relay has an inherent and table on the opposite page. adjustable time delay. If the low- The additional or artificial neutral point capacitance condenser is used, the can be established in one of three ways :— current flowing in the lower potential (1) The step-down transformer may be connection to earth operates a sensitive star-connected on the higher-voltage relay of a type to be described later. side. The neutral point thus made (2) An earthing transformer or com available is connected to earth through pensator of high leakage impedance (or a high impedance, which may be either alternatively an earthing transformer
Fie 2 Circuit conditions with one high-voltage conductor broken at both ends and earthed at F in ' (a) and on side remote from supply in (b). PS and P S 2 switches at supply end; SSi and SS 2, switches at far end of circuit; LCC, low-capacity condensers, farminr artificial neutral point; SC, screened cable; SG, safety spark gap; NDPi and NDP 2, neutral-displacement protective relays NDPi trips SS, after 10 sec. and NDP; starts up but resets after PS, trips ; EF,. earth-fault relay to trip PSi instantly ; no fault current in EF 2. 1014 E l e c t r i c a l R e v ie w December 20, 1946
of normal leakage impedance but with as only standard and well tried components a high resistance in each phase con are used. The use of a low-capacitance nection) may be connected to the condenser in the earth connection is less supply side of the main transformer, expensive and with later relay developments and the neutral point, thus available, should prove no less reliable. However, connected directly to earth. The power transformers are not always star- secondary of a current transformer in connected on the higher-voltage side and in this connection can then be used to the majority of cases consideration must be supply a standard induction relay as given to methods (2) and (3). Of these, the mentioned in (1). connection of an additional transformer unit (3) Three equal high impedances may be of special design to the higher-voltage side connected in star to the high-voltage of the circuit can be justified technically only side of the power transformer. These from the reliability of the secondary relay impedances usually take the form of equipment. It is usually more costly, par low-capacitance outdoor condensers, ticularly if the windings and resistances are which are comparatively easy to con continuously rated under maximum neutral- struct and no less reliable than any displacement conditions. Method (3) is the least costly and no less satisfactory technically except for the relay equipment. At maximum voltage between neutral and earth, the value of the primary impedances are such that only approximately 1 mA flows in the earth connection. This is too low a value to permit the use of standard induction relays. A type of relay which has been developed to meet this condition is described below.
+ O' BATTERY - O
Fig. 3.— Neutral-displacement protective circuit A, moving-coil relay with fixed contacts L and H and moving contact M C; B, time-delay relay ; C, operation counter ; D, kV-setting knob ; E, artificial-fault test button; F, auxiliary relay differential. Low-capacitance condensers, forming artificial-neutral point and shown at LCC, low-loss transformer at LLT and harmonic filter at HF other outdoor transformer or switch bushing connected to the same system. Owing to the low value of current In view of the low value of operatii available in the earth connection, even current, attention was directed to a relay i under conditions of maximum neutral the rectifier-operated moving-coil type. Whi displacement, standard induction relays a moving coil of the required sensitivi cannot be used. (minimum operating current 0-25 mA) w; Of the three alternatives, method (1), available, the construction of the coil ar using a potential transformer between the particularly of the contacting arrangemen power-transformer neutral and earth, is was not considered sufliciently reliable fc probably the most satisfactory and reliable, protective-relay duty; a low-loss transform« December 20, 1946 E l e c t r i c a l R e v ie w 1015 giving an output of 2 0 mA with input of coil, is energized and the relay drops off, O'25 mA was therefore designed. The input thus interrupting the sealing and time-delay was governed by the use of existing low- coil circuits. The contacts of the moving-coil capacitance condenser neutrals provided for relay therefore perform making duty only. A other equipments. The higher output enabled photograph of an experimental prototype a more robust coil construction and con equipment in service is reproduced as Fig. 4. tacting arrangements to be em ployed. A circuit diagram for this equipment is shown in Fig. 3. The current in the neutral earth connection is passed through the input of the low-loss transformer. Harmonic filtering, with par ticular reference to the third
Fig. 4.—Prototype equipment in service ; reference letters as in Fig. 3 harmonic—the harmonic likely to be most prominent in the neutral of three-phase systems— is provided across the primary winding. The output from the transformer is rectified to ener gize the moving-coil relay, which has a contact arm moving be tween two adjustable fixed con tacts, H and L, “ high ” and “ low.” 1- 5 mA is required for “ full-scale ” The low-loss transformer and harmonic deflection of the moving contact arm or filter are in a case in the back of the panel. about 60 deg angular movement. This gives Setting adjustment of the moving coil ample contact separation between the moving element is obtained by a variable resistance contact MC and “ high ” and “ low ” across the primary of the transformer and fixed contacts. calibrated from 20 to 100 per cent neutral An auxiliary relay of the double-wound displacement. Provision is made for an telephone type with two normally open overall “ artificial-fault ” test by applying contacts is operated by the moving-coil 230 V at 50 cycles through a suitable resistance contacts in the following manner:—The and push button across the primary of the moving contact leaves the “ low ” fixed low-loss transformer. An electromagnetic contact without any change to the circuit counter connected across the delay-relay coil conditions, but on making contact with the indicates the number of times operation “ high ” fixed contact a circuit is made to occurs (with or without tripping), which is one coil of the auxiliary relay which operates also an indication of the number of times the to close its contacts. One of these contacts system neutral has been displaced. An is in parallel with the moving and fixed equipment of this type has proved stable and “ high ” contact and seals the auxiliary reliable for more than six months on an relay in. The other contact on the auxiliary important 33-kV circuit. relay energizes the definite-time relay, which closes its contacts to trip the circuit breaker Artificial Light Exposure in accordance with its time setting. When the moving coil is de-energized, the rBTHE “ A.P. Guide to Exposure by Artificial moving contact leaves the “ high ” fixed Light ” (published at 6d. net, postage Id. for Amateur Photographer by Iliffe & Sons, Ltd., contact, but no change takes place in the Dorset House, Stamford Street, London, circuit conditions owing to the “ sealing S.E.l) contains exposure tables based on the contact on the auxiliary relay. On making additive factor system. The guide, which is contact with the “ low ” fixed contact, in “ waistcoat pocket ” form, includes tables however, the other coil of the auxiliary relay dealing with plate and film speeds, light intensity, which is equal and in opposition to the first distance of light, angle of main lighting, etc. 1016 E l e c t r i c a l R e v ie w December 20, 1946 Views on the Hews Reflections on Current Topics
NE of my readers has sent me some that this was a matter to be decided by the O cuttings from the American magazine Electricity Supply Board but he expressed Life with others from the advertisement pages the view that the small amount of energy o f the Electrical Review to back his contention consumed by these signs, mainly during that British electrical manufacturers are off-peak hours, made restrictive measures lagging behind their American counterparts unnecessary. in design. He also sends a Life advertisement * * * of a typical American automobile. He has scored a point, but I think that he has done What must surely be the biggest flood this by comparing superior examples of lighting job ever undertaken has just under American appliances with what are not gone tests. It is the illumination of Table front-rank British products. But I still have Mountain for the visit of the Royal Family to admit that it is most undesirable that these to South Africa next year. The searchlight same British products should go overseas equipment used for the purpose is provided if they are likely to be compared v/ith better by the Union Defence Force. foreign designs at about the same price. * * * * * * I have previously commented on the debt My correspondent reiterates the view now owed by the gas industry to electrical so often expressed that while liberties may designers and this was impressed strongly be taken in the present seller’s market the upon me at a recent exhibition arranged at effect is likely to be very detrimental when the London Building Centre by the British the buyer is able to call the tune again. He Gas Council. Cookers now have those fine also considers that people at home should lines and fittings formerly associated with not be imposed upon—a sentiment with which electric cookers after they broke away from I heartily agree. Too much junk is being the practice of slavishly copying gas models. sold under the shield of “ austerity.” Even the taps look like switches. The inset * * * fires particularly reminded me of their Bridlington Chamber of Trade thought electric forerunners ; they are now free from that it had hit on a sound idea when it the continuous hiss which once characterized suggested that the prohibition of shop- all gas fires. Of course they still need window lighting might be relaxed in favour ventilation, as do the other appliances, but of battery-operated lamps. Unfortunately there is a tendency to make a virtue of this necessity. the Ministry of Fuel and Power has ruled * * * this out as batteries need power from the mains for charging. Vehicle batteries are One point which I noticed in connection (or once were) considered a desirable off-peak with the recent coal strike in the United load; surely lighting batteries might be States was the state of the electric power similarly regarded. utilities’ “ stockpiles.” These were reported * * * to be equivalent to 74 days’ supply, which makes our ten days’ margin (or whatever it This reminds me of the varying views on is) look very narrow. Last year at the same electric advertising signs held in different time the American position was even better; parts of Europe. In this country the power they then had sufficient supply for 92 days. situation has led to a total ban—a ban which looks like a “ long-term policy.” In France, * * * where power is even shorter than it is here, Last year at this time I expressed the hope they are also generally prohibited but may that 1946 would be brighter and better than be used on the occasion of festivals. Eire’s the preceding six years—a hope that was electricity supply is barely sufficient for hardly satisfied. Nevertheless I propose to ordinary needs but electric signs are still try again and in wishing my readers the allowed to operate. Questioned on the compliments of the season, look forward to subject in the Dail recently Mr. Lemass, greatly improved conditions in the coming Minister for Industry and Commerce, said year. —REFLECTOR. December 20, 1946 E l e c t r i c a l R e v ie w 1017 PERSONAL and SOCIAL News of Men and Women of the Industry dkN the occasion of the visit of the Public telecommunications. He has joined the Mullard Utilities Panel to England the delegates Radio Valve Co., Ltd., direct from the Admiralty were entertained to luncheon at the Café Royal and will be closely connected with the develop on December 9th by the Council of the British ment of electronics as applied to industry. Electrical and Allied Manufacturers' Associa The directors of Crompton Parkinson, Ltd., tion and the Executive Committee of the British announce the appointment of Mr. Arthur National Committee of the World Power Parkinson as an executive director. Mr. Parkin Conference. Sir Harold Hartley, chairman of son is the son of the the Conference, presided. Among those present late Mr. Frank Parkin were:—B.E.A.M.A. : Mr. G. L. Wates, Mr. son. chairman of the H. W. Bosworth, Mr. 1. R. Cox, Mr. D. Z. de company. He has been Ferranti, Mr. S. C. Hurry, Mr. T. F. Lister, with the company since Mr. J. S. Ramsden, Mr. D. D. Walker, Mr. 1936 apart from a period B. H. Leeson, Mr. V. Watlington and the of service with the Hon. J. R. Rea. World Power Conference:— R.E.M.E. at Home and Col. C. M. Croft, Sir Johnstone Wright, Dr. in thé Middle East C. H. Lander, Dr. A. Parker and Mr. C. H. during*' which he Gray. Delegates:—M. Varlet, M. Grezel, M. attained the rank of Bardon, M. Crescent, Mr. G. J. T. Bakker, captain. Mr. Parkinson Mr. Van Dam Van Isselt, Lt. Col. D. W. is sales manager for Thorpe, M. Smits, M. de Heem, Mr. V. Bodson, lamps and lighting Mr. Tresch, Mr. Simon, M. E. H. Etienne, Mr. Mr. Arthur Parkinson eq u ip m en t. Hamerschlag, Mr. C. B. Blydt. Mr. Tuxen, Mr. L. Raven, B.Sc., A.M.I.E.E., deputy Mr. J. H. Angus, Capitaine and Mme. de borough electrical engineer with the Brentford Fargues, Mr. C. W. Jeffers, Mr. R. Asher, and Chiswick Council, has been appointed Mrs. K.. H. Munro. Mr. R. P. letter and Wing borough electrical engineer at Sutton Coldfield. Cdr. C. A. Francis. Mr. Raven was born at Salford and educated Mr. K. Hall recently resigned the managing at Manchester University (Engineering Depart directorship of the Indian Aluminium Co., to ment), receiving his practical training with the become managing director of the Northern Automatic Telephone Manufacturing Co., Ltd., Aluminium Co., Ltd. and Manchester Corporation Electricity Depart Mr. E. G. Batt has been appointed director ment. Between 1932 and 1941 he held appoint of the British Refrigeration Association with ments in the Manchester, Wallasey and Cardiff effect from March 1st, 1947. undertakings and from then until taking up his Dr. C. F. Bareford, M.Sc.. Ph.D., has been present position in March, 1945, he was appointed manager and head of the new consumers’ engineer at Harrogate. In this Mullard Electronics Research Laboratory at issue the Brentford and Chiswick Electricity Cross Oak Lane, Sal- Department is advertising for a successor to fords, near Horley, M r. R aven. Surrey. Dr. Bareford Mr. R. L. Axford, A.M.I.Mech.E., chief took a first-class technical assistant at Newport (Mon.), has been honours B.Sc. in physics promoted to the position of deputy borough in 1930. One year later electrical engineer of Newport, consequent upon he was awarded the the retirement of Mr. R. Dimmack on super M.Sc. degree, and in annuation after forty-three years' service with 1933 the Ph.D. degree the undertaking. for work on the spark The employees of the Telegraph Construction discharge in vacuo. He & Maintenance Co., Ltd., are accomplished in worked in this field other things beside cable production, and the until 1934 when he “ Telcon ” Concert Party last week gave an joined the B.T.H. Co. excellent concert at the company’s Greenwich as a vacuum physicist. works. The occasion was the Telcon Social & Dr. C. F. Bareford There he worked on the Athletic Club’s annual presentation of trophies design of radio valves and other electronic and prizes. Tap dancers, vocalists and instru devices. In 1936 he went to the Royal Naval mentalists served up a programme which was Signal School at Portsmouth, which later very much to the taste of a large and appreciative became the Admiralty Signal Establishment. audience which included Lord Colgrain (chair In these two establishments he has been engaged man), Sir Geoffrey Clarke (managing director), on research and development work connected Mr. B. H. Musgrave (secretary), and Messrs. with radio-location, direction finding and F. Leighton, J. N. Dean and W. F. Randall. Ct 1018 E l e c t r i c a l R e v ie w December 20, 1946
At the conclusion of the concert Lord Colgrain Mr. C. G. Renold, chairman of the Renold & presented the trophies and prizes and in a brief Coventry Chain Co.. Ltd., has been appointed speech said that the past year had been a chairman of the newly-formed British Institute difficult one and he thanked all the workers for of Management. Mr. Renold is this year’s what they had done. The company had ac chairman of the Manchester Engineers' Club. quired a ground at Kidbrooke which was being prepared as a sports ground, and it was hoped Mr. F. B. Walker, 21, Morningside Gardens, that this would be ready for use in about six Edinburgh, 10, who, for the past eight years months’ time. After the presentations there has represented the Hotpoint Electrical was dancing with music by A1 Tallack’s band. Appliance Co., is joining the sales staff of On one of her return journeys from the Trustful Products, Ltd., Scottish Branch, on United States, the passengers on the Queen January 6th. Elizabeth included several well-known men in A semi-social evening was organized by the the electrical industry. In the accompanying N.W. Students’ Sections of the I.E.E. and picture, which is reproduced by courtesy of I.Mech.E. on December 9th. The first half of this new venture, which proved to be both entertaining and instruc tive, was devoted to a “ Brains Trust” consist ing of a panel of six senior members, three from each Institution. Under the chairman ship o f M r. R. A. S. Thwaites they discussed a wide range of subjects. The second half of the
Electrical men on board the Queen Elizab eth evening consisted of a "Quiz” Competition. “ Ocean Pictures,” we show a party on board The I.Mech.E. carried off the honours which consists of Mr. Geoffrey Falk and Mr. W. by 36 points to 30, and were presented with a Thurner (Falk, Stadelmann & Co., Ltd.), Mr. “ mallet ” : Mr. Thwaites acted as question- J. A. Fraser and Mr. M. C. Lawson Brown master. It is proposed to make this “ Quiz ” (English Electric Co., Ltd.), and Mr. C. A. an annual event. Turner and Mr. G. H. F. Walton (" Diamond Mr. H. Goodrich, J.P., M.P., whose election H ” Switches, Ltd.). as chairman of the London and Home Counties Mr. J. Lawton has been appointed area J.E.A. was reported in our last issue, served manager. Eastern Counties, of Ferranti, Ltd., on the Electricity Com vice Mr. R. J. Hebbert, whose duties at Hollin- mittee of the Hackney wood now occupy his whole time. Mr. Lawton Borough Council from has been in the company's service since 1917, 1926 to 1945. He was and is an expert in the subject of large-scale elected a member of the m e terin g . J.E.A. in 1937 as a Professor G. W. O. Howe, who was presented representative of those with a cheque for £200 on his retirement from Metropolitan Borough the James W att Chair of Electrical Engineering Councils who are auth in the University of Glasgow, has handed over orized electricity under the gift to the principal of the University for takers. After serving the endowment of a prize for the most out on the Local Distribu standing graduate in electrical engineering. The tion, Finance, and presentation ceremony1 was performed by General Purposes Com- Professor Bernard Hague, who succeeded M r. h . G o o d rich mittees for two years, Professor Howe when the latter retired on he became vice-chair September 30th. man and then chairman of the General Purposes On Saturday last the Social Club of Berry’s Committee, holding office until his present Electric, Ltd., arranged a party for about 120 election as chairman of the Authority. children of employees at the Magicoal Works, Mr. Dudley Stuart, M.I.E.E., the retiring Wembley. Arriving at about 3 p.m. the children chairman (who was formerly an alderman of had tea and then there was an hour’s film show the borough of Wimbledon) did not seek followed by a concert, community singing and re-election as a member of the J.E.A., on which competitions. Shortly after 6 p.m. Father he has served for twenty-one years. Councillor Christmas looked in to distribute toys and W. H. Shaw, of Walthamstow, who has been a afterwards the children left with gifts of sweets, member of the Authority since 1928, has been fruit and pocket money. re-elected vice-chairman. December 20, 1946 E l e c t r i c a l R e v ie w 1019
Alderman W. L. Lorkin, A.M.I.E.E., who has National Telephone Co. in equipping the first been elected Mayor of Reigate, has served as loaded cable in Europe (between London and chairman of the Corporation Electricity Com Croydon). From 1907 onwards he occupied the mittee for the past positions of export sales manager, assistant sixteen years. He is general sales manager and assistant to the joint managing director managing director. In 1928 he transferred to of the Equipment & the International Standard Electric Corporation, Engineering Co., Ltd., of which he became an assistant vice-president. the senior British mem During the war he returned to Standard Tele ber of the International phones & Cables, Ltd. The funeral was at Transport Organization, the North W atford Cemetery on December Uth. silver medallist of the Mr. G. O. H. Horstmann.—We regret to report Royal Society of Arts, the death, on December 10th at the age of Freeman of the City of eighty-three, of Mr. G. O. H. Horstmann a London, and a member founder of the Horstmann Gear Co., Ltd. He of the Livery Com was the eldest son of the late Mr. Gustav pany of Carmen. Alder- ... w . . . , Aid. W. L. Lorkin Horstmann and upon the completion of an man Lorkin took an apprenticeship with his father spent several active part in the pioneer stage of electric welding years in London before returning to Bath. and in connection with magnetic crack detectors. There he opened a watch and clock makers’ A.B. Metal Products, Ltd., held a staff business and in 1904 established the Horstmann dinner on December 6th at the Savoy Hotel, Gear Co. to develop the inventions of himself London. Mr. S. Marks, managing director, and one of his brothers. He was the chairman said that the change from war production to of the company and held that position until peace had been smooth and the splendid about two years ago when he was forced to financial position was a direct result of the retire on account of ill-health. enthusiasm and energy of the workers. Will.—Mr. W. S. Smith, former managing Mr. J. R. Taylor, A.M.I.E.E., has been director of the Telegraph Construction & appointed deputy borough electrical engineer Maintenance Co., Ltd., left £178,730. of St. Helens in place of Mr. J. Mills who was recently appointed borough electrical engineer of Bury. Mr. Taylor went to St. Helens about I.E.E. Benevolent Fund two years ago as power station superintendent, EB4HE president of the Institution of Elec- having previously served with the Hull Electricity trical Engineers, Mr. V. Z. de Ferranti, Department, the County of London Electric has made an appeal for contributions to the Supply Co., and the Kent Electric Power Co. Institution’s Benevolent Fund. In addition to Mr. F. L. Parkin, B.Sc., A.M.I.E.E., has appealing for new subscribers, he asks existing resigned the position of Midlands regional contributors to consider increasing their sub manager for the Harland Engineering Co., Ltd., scriptions and expresses the hope that this, the to take up an appointment on the staff of the silver jubilee year of the Royal Charter of the chief engineer of Steel, Peech & Tozer as from Institution, will be celebrated by a record rise in December 30th. He will be succeeded by the income of the Fund. Mr. S. A. Hamer, B.Sc.Tech., A.M.I.E.E., of The report of the Committee of Management the company’s Manchester branch. for the year ended September 30th, 1945, showed that the number of subscribers during that period was 11,859 and that their total Obituary donations were £8,498. As the membership of Mr. F. K. Jewson.—We regret to hear from the Institution was 30,225 at September 30th, Standard Telephones & Cables, Ltd., of the 1945, the average amount contributed per death of Mr. Frank Knight Jewson, A.M.I.E.E., m e m b e r w as 5s. 7d. who had been associated with the telecommuni Subscribers who have not already completed cations industry for forty-nine years. He died deeds of covenant are urged to do so. At present in London, suddenly, from a heart attack on there are 996 covenanted subscribers, with the December 4th, in his sixty-seventh year. Mr. result that the Fund is able to recover £1,100 Jewson was educated at Finsbury Technical from the Inland Revenue Commissioners. If all College under Professor Silvanus Thompson, subscribers and donors who pay income tax and joined the Western Electric Co. (predecessor at the full standard rate in Great Britain and of Standard Telephones & Cables) in 1897 and Northern Ireland were good enough to complete was concerned successively with apparatus and covenant forms a further £5,000 would be cable testing and telephone installations. He obtained without any obligation to the con installed the first equipment in England for tributors beyond the promise to pay for seven marshalling the troops at the Diamond Jubilee years. The agreement automatically ceases in Review. He also gave the first demonstration the event of death and does not involve the to the G.P.O., and the National Telephone Co. executors in any liability. Forms can be obtained of the use of loading coils and assisted the from the hon. secretary of the Benevolent Fund. 1 0 2 0 E l e c t r i c a l R e v ie w December 20, 1946 E.I.B.A. Home The same principles have, however, been applied in modified form in Great Britain and the Munificence of a Non-Electrical Donor United States to frequencies up to 20 to 30 Me B 'O R some little time past the Electrical per sec and the technique of measurement above Industries Benevolent Association has been that range is to be discussed at the next meeting. looking out for a suitable house as a home In the meantime information will be gathered for old people, and one estate which came to regarding measurement in relation to items its attention was Broome Park, Betchworth, that give rise directly to interfering fields. Surrey. This comprises about 25 acres of Interference from telephone plants is to be gardens, orchards, park and woodland in discussed in conjunction with the C.C.I.F. and which stands a fine Georgian mansion in the question of including radio receivers within magnificent condition. the scope of the committee will be considered. The estate lies just south of the junction of Designs of interference generators in use will be Reigate Hill and Box Hill, has easy access investigated with a view to proposing inter to Dorking, Reigate and Redhill, and is within national standard types, one for random noise five minutes' walk of Betchworth Station which and a second for impulses. The Belgian is less than an hour’s journey by train from National Committee is to prepare a revised Victoria Station. specification incorporating modifications to the The owners are Mr. Joseph Cunning, a C.I.S.P.R. measuring set for the range up to retired Harley Street surgeon, and his wife, who 1,600-kc per sec. when they were told of the E.l.B.A.’s work, A farther conference of the Export Group particularly its social service, decided to give has been provisionally arranged for Zurich in the estate to the Association as a memorial September next year, when a number of Advisory to their son, Mr. James Erskine Cunning, Committees of the I.E.C. are expected to meet. who lost his life during a raid over Essen in This will be followed by a meeting of the full 1941. Neither Mr. nor Mrs. Cunning have C.I.S.P.R. to discuss wider aspects. A luncheon any association with the electrical industry. was given by the B.S.I. to the delegates, who The home will have no institutional flavour afterwards visited the B.B.C. studio to witness and there will be the fullest respect for the demonstrations of interference with television privacy of the individual. The residents will and an exhibition of standard measuring have their own separate quarters while enjoying e q u ip m e n t. the communal advantages of generous common rooms, care during illness, etc., facilities for a Junior Institution of Engineers library, hobbies and music, and the ability to organize concerts, whist drives and other ■ AOR most of the war period Maj. Gen. social events, to which they will be able to A. W. Sproull was responsible for the invite visitors in accordance with the idea of nspection of engineering, telecommunication helping the residents to foster friendships with and radar equipment as well as of mechanical people in the neighbourhood. The residents transport vehicles, so he made that theme the will also be encouraged to do as much as they subject of his presidential address to the Junior can in the actual running of the estate, and Institution of Engineers. everything possible will be done to enable them After naming the several inspectorates of the to take part in, and to contribute to, the life of Ministry of Supply, the organization of the the neighbourhood. Chief Inspector, Electrical and Mechanical Equipment, formerly termed Engineer and Signal Stores, was outlined with brief comments Radio Interference on a few examples of the work done by the A MEETING of the group of experts of the three divisions, including the tropicalization of special committee on radio interference electrical stores and testing of radio and radar (C.I.S.P.R.) of the International Electro components. Some 50 per cent of the staff technical Commission has been held in London employed on inspection of signal equipment at the invitation of the British Standards consisted of women. Institution. The last meeting of the C.I.S.P.R. (which was set up in 1934) was held in Paris in 1939. At the present proceedings, which were Northampton Polytechnic opened by Sir Clifford Paterson (chairman, ^■30 mark the fiftieth anniversary of the British National Committee of the I.E.C.), opening of the Northampton Poly Dr. S. W hitehead (Director, E.R.A.) was elected technic, London, E.C.l, scientific experiments c h a irm a n . and an exhibition of students’ work were Just before the war the C.I.S.P.R. drew up a arranged at the Polytechnic on Friday last. detailed specification for a standard measuring The display included workshop demonstrations set, designed for frequencies between 150 to and experiments and demonstrations in the 300 and 550 to 1,500 kc per sec, which has, Senior Communications and Electrical Engineer however, become inadequate with the introduc ing Laboratories. There were also exhibits of tion of high-frequency apparatus for medical, electrical installations and cable jointing by the industrial, communication and control purposes. stu d en ts. December 20, 1946 E l e c t r i c a l R e v ie w 1021 PARLIAMENTARY NEWS By Our Special Reporter
WEURING a House of Lords debate on agri- for experimental purposes. The Southern m w culture last week the Earl of Huntingdon, Railway proposed to carry out trials, and the Parliamentary Secretary to the Ministry of G.W.R. had placed orders for two gas turbine Agriculture, said that the Government had locomotives for use on long-distance services. received and discussed the programme agreed with the National Farmers’ Union and the Neasden Station Conversion supply companies for the extension of electricity Mr. Erroll asked the Minister of Fuel and in rural areas. They were trying to get over Power what improvements in operating efficiency the difficulties created by the very great shortage were expected to result from the conversion of of generating capacity and the supply of poles the L.P.T.B.’s Neasden power station to fuel-oil and other matters. The proposal to bring the b u rn in g . electricity supply industry under national Mr. Shinwell said that the conversion of the ownership would, he was sure, have an important station to oil-firing had been undertaken by the effect on those plans. The same might be said London Passenger Transport Board as a matter with regard to the inland transport services. of expediency, to ease the coal position. It was Generally, the Government policy regarding impossible to predict the exact effect of the housing, water supplies, electricity, transport, alteration in fuel on operational efficiency, but education, and other services and amenities no great change was likely. was on a national basis; but it was adapted where necessary to meet the special requirements Linseed Oil Supplies of rural areas. Sir Stafford Cripps, replying to questions on the allocation of linseed oil, said that the Lighting and Cooking Appliances Census of Production Reports for 1935 showed At question time in the House of Commons that the paint, varnish and white lead group of Commander Galbraith asked the Minister industries used in that year 47,900 tons of of Works what percentages of total United linseed oil and the linoleum and leathercloth Kingdom production of electric lighting industries 33,900 tons. The printing ink appliances, accessories and fittings and electrical industry used 3,055 tons of vegetable oils of cooking and heating apparatus were being taken all kinds. by his Department for the housing programme; Mr. Erroll said he failed to detect any and what proportions, respectively, had been reference in the reply to the supply of linseed installed and placed in stock to date. oil for the electrical insulation industry—the Mr. Tomlinson said that approximate figures tonnage requirements of which were very were available for a number of the items, as small—which was absolutely vital for recon given in the following table:— struction. Small users were as important as large ones. Percentage of House Warming total production Percentage of acquired for total acquisition Mr. Driberg asked the Minister of Fuel and Type o f housing by installed at Power if, in view of the prospect of a steadily A ppliance. Ministry of N ovem ber 16th, Works, October, 1946. increased demand for electricity, he would 1946. investigate the results of the experiments now being conducted by the Chattanooga Electric Wash Boilers 17 90 Immersion Heaters 21 85 Power Board, United States, in the heating of Electric Cookers. . 14 90 houses with well water which had a temperature Thermostats 8 89 of 58 deg F. Mr. Shinwell said he was making inquiries Figures were not available for other electrical about these experiments. items, but the percentages acquired by the Wind-Driven Generators Ministry of Works in other cases were very much smaller. Sir William Darling asked the Minister of Fuel and Power if he was aware that under Diesel-electric Locomotives S.R. & O. 1942, No. 2510, Control of Fuel Mr. Erroll asked the Minister of Transport Order, the use of a wind-driven lighting set for what steps the main line railway companies house or shop had been forbidden by his were taking to introduce Diesel-electric loco Department in Edinburgh; and if he would motives for long-distance passenger and freight reconsider the utilization of the considerable services. wind-power of Great Britain for the production Mr. Barnes said that the railway companies of light for domestic and business purposes. were giving this matter close attention. The Mr. Shinwell said that the Order referred to L.M.S. had two Diesel locomotives on order prohibited the consumption of fuel, which 1022 E l e c t r i c a l R e v ie w December 20, 1946 included electricity, for lighting or other fittings the Central Electricity Board had found it or appliances used for business advertisement necessary on eighteen days to issue instructions purposes. He regretted the necessity for that to electricity undertakings to shed 5 or 10 per prohibition, but he regarded it as important for cent of their load for periods averaging about indirect as well as direct fuel-saving purposes, half an hour. All seven areas of the Board and it would not be fair to traders generally to had been involved but the districts most affected allow exceptions. The answer to the second were the Midlands and South-East England. part of the question was that his Department Load shedding did not necessarily involve cuts in consultation with other Departments con in electricity supplies. In many cases the strain cerned, was already looking into the matter. on the plant was lightened by a reduction in Power Station Consents voltage; in other cases large industrial con sumers, on receiving an intimation, transferred Mr. Palmer asked the Minister of Fuel and part of their load to off-peak hours. Power if he would take steps to reduce the delays experienced in obtaining consent to the Gas and Electricity Production building of urgently required new power stations. Mr. Shinwell said that close consultation was In answer to Mr. Harold Davies, Mr. Shinwell already taking place among the Departments said that gas production had risen from 165 concerned which it was hoped would expedite million therms in November, 1945, to 186 the issue of formal statutory consents. million therms in November, 1946, an increase of 12-7 per cent. During the same period P o w er Cuts electricity production had risen from 3,463 Replying to Col. J. Hutchison on December million kWh to 3,938 million kWh, an increase 12th, Mr. Shinwell said that since November 1st of 13-7 per cent. Progress at Chester Golden Jubilee Celebrations ^H ESTER Corporation electricity under- England, Central Electricity Board, who opened taking, which supplies an area of 144 the exhibition, said the majority of people of sq miles and has 23,547 consumers, celebrated this country took electricity as a matter of its golden jubilee by holding a historical course. That was the measure of the service exhibition of electrical equipment at the Town the engineers of the electricity undertakings had Hall from December 11th to 14th. Alderman given to the country. The Minister of Fuel R. Matthewson, chairman of the Electricity and Power was determined that rural areas Committee, who presided at the opening hould be electrified as far as possible. ceremony, paid tribute to the part played in the Chester had shown the way. development of the undertaking by the late Developments in domestic equipment during Mr. S. E. Britton, who died last June after the past fifty years were demonstrated by the having been city electrical engineer since 1904, comparison of the old and the new. Model when the number of consumers was 778 and the kitchen equipment was accompanied by a kWh sold 1,273,213. To-day the consumers model of the generating set installed at the Little numbered 13,842 in the city and 9,705 in the Barford Station in 1944, and numerous photo rural area; electricity sold amounted to graphs of the Chester power stations. Arrange 55,549,275 kWh, the maximum demand, ments were made for members of the public 19,228 kW, the cost per kW h generated 0-754d to inspect the hydro-electric station and the (1 -433d) the price per kWh sold, l-2d and the Crane Bank substation. effective capital expenditure, £989,543. Mr. S. C. Harling succeeded the late Mr. The electricity works were opened on Decem Britton as city electrical engineer. ber 17th, 1896, and Chester was amongst the first undertakings in the country to open a showroom. The latter, which was extended to Pulverized-Fuel Conference its present dimensions in 1931, was visited last rB^HE Institute of Fuel is to hold a conference year by nearly 100,000 people. Twenty-five • on pulverized fuel at Harrogate from June per cent of the total sales of the showroom and 3rd to 6th, 1947. Over fifty papers are being contracting department represented goods contributed from various sources, British and supplied to contractors in the city on trade foreign. The sessions will be devoted almost terms. In 1912 the hydro-electric station was wholly to discussions, as the papers will not opened and in 1923 the Queen’s Ferry power be read but will be issued in book form four station was purchased. The undertaking was weeks earlier. Each session will be opened by noted for its pioneering work in rural develop a rapporteur who will summarize the papers. ment. There were 1,024 farms connected, and A programme of social functions and works in the rural areas the consumption was 23J visits will be arranged. Membership of the million kWh. conference will not be confined to members of Mr. C. T. S. Arnett, manager North-West the Institute. December 20, 1946 Electrical Review 1023 COMMERCE and IMH STItV Electricity Output in November. National Apprenticeship Scheme. d^FFIC IA L returns rendered to the Electricity showing the income (£583,161) and describing ” Commissioners show that 3,938 million how it was absorbed. The analysis shows that kWh was generated (3,722 sent out) by “ materials purchased and services rendered ” authorized undertakings in Great Britain during (including the cost of energy) took 56 per cent, November, 1946, as compared with the revised rates and taxes 16-2 per cent, wages and salaries figure of 3,463 million kW h in the corresponding 13-7 per cent, reserves and depreciation 7 per month of 1945, representing an increase of cert, and preference and ordinary dividends 13.7 per cent. 4-6 per cent, leaving a balance of 2 per cent. Up to the end of November 36,868 million Details are given of these items and much other kWh was generated (34,782 million sent out) useful information is included. compared with 33,608 million for the corres The competitive nature of the business is ponding period of 1945, representing an increase stressed and it is shown that the domestic of 9.7 per cent. consumer obtained his supply at a lower average rate than in the preceding year. Extensive Load-Shedding Reference is made to the company’s inability to During the past few days there have been expand its service as it would wish owing to regular stoppages in the supply of electricity in inadequate labour and materials. Another all areas of the country. On Wednesday last point is that with practically the same number week they were spread over the period from of employees operational wages have risen by 8 a.m. to 12.30 p.m. with a short interval at 115 per cent since 1938. Towards the end the about 10 a.m. Scotland had its first “ cut ” on statement appears:—“ Private enterprise may December 4th when the voltage was reduced by have had its faults but it is the ‘ goose that lays 5 per cent for a 45-minute period. the golden eggs ’ ” and the moral is:—“ Don’t Mr. Shinwell, Minister of Fuel and Power, cook your goose.” spent last week-end investigating the power plant manufacturing situation in the Man Contracting Work at Bath chester area. At a Press conference he suggested Recently the Bath Housing Committee put that more use might be made in industry of forward a recommendation to the City Council mobile generating sets which although intended that tenders for electrical work should be for export might be held for a period. Mr. invited from contractors on the National Shinwell said that he did not propose to urge Register of Electrical Installation Contractors further street lighting cuts which had little only to specifications prepared by the city influence upon the situation. He placed the electrical engineer. This was accepted, but the responsibility for “ load shedding ” on the Committee agreed that members of the Electrical Central Electricity Board which found it Contractors’ Association should be included. necessary to prevent plant breakdowns. It was not a deliberate policy of restrictions upon domestic consumers. Restrictions (to the Withdrawal from Essential Work Orders extent of 2 | per cent) were being placed only The Ministry of Labour and National Service on industrial establishments. has recently informed organizations representing employers and workers concerned that the Parliamentary Bills building and civil engineering industries will be Among the Bills which will come before withdrawn from the scope of the Essential Parliament during the 1946-47 Session are the Work Orders about March 31st next. Notices fo llo w in g :— will be issued to all scheduled undertakings and Nottinghamshire & Derbyshire Traction, sites giving them at least a month’s notice. empowering the Nottinghamshire & Derbyshire Until individual de-scheduling takes effect, the Traction Co. to run trolley vehicles on additional provisions of the Essential Work Orders remain routes and for other purposes. in force for all employers and workers on Dudley Corporation, providing inter alia fo r scheduled sites and in scheduled undertakings. the supply of heat by means of hot water and steam . Companies Bill Telling the Employees The text of the Companies Bill recently Last year the West Gloucestershire Power Co. presented to Parliament is available from the produced an elaborate “ Report to Employees Stationery Office (2s.). It is mainly based on on the Financial Results for the Y ear’’—the the recommendations of the Cohen Committee year being 1944. Now we have received the appointed by the President of the Board of second of the series (not quite so ornate) covering Trade, and is designed to bring the Compa-' J945. This follows the same general lines, Act, 1929, up to date. It comprises 10° 1024 E l e c t r i c a l R e v ie w December 20, 1946 and seven schedules and covers, in some detail, The remaining sets will be “ TLB3 ” type three- management and administration; share capital cylinder engines, rated at 157 B.H.P. at 600 and debentures; constitution of companies; en r.p.m., coupled to similar Brush machines but forcement and registration of charges; winding having an output of 125 kVA at the same voltage up; offences and legal proceedings; and com and conditions. Each set will be controlled panies not registered under the 1929 Act. by a Brush open flat-back type steel panel switchboard incorporating a manually operated Fuel Economy oil circuit-breaker and automatic voltage regu The 1946 issue of the “ Fuel Economy Review” la to r. (2s. 6d.) is the silver jubilee number of this New Diesel Engine Factory annual publication of the Federation of British Industries. Of the fourteen articles included, The new factory which is being erected by three are of especial electrical interest. In one F. Perkins, Ltd., at Newark, near Peterborough, of these Professor M. L. Oliphant discusses for the construction of high-speed Diesel engines nuclear physics and the industrial future of was recently visited by a party, which included atomic energy. Mr. J. R. Beard deals with Mr. S. Tiffany, the Member for Peterborough, electricity supply as a factor in securing fuel and Councillor Wren. Mr. R. Ferguson, works economy over the past twenty-five years and director, explained to the visitors the plans of summarizes possible development in the years to production, operating conditions and social come. The third article referred to is by Mr. welfare. The site covers an area of seventy W. Atkinson, who takes as his subject industrial acres and will eventually accommodate the electric lighting to-day. factory, administrative offices and a sports ground. It will replace the present Queen Argentine Import Control Street works of the company. The Argentine Central Bank has sent a circular to institutions and brokers authorized Dutch Buy British Equipment to operate in exchange setting out particulars of Despite competition from American firms, the a prior permit system for foreign exchange for General Electric Co., Ltd., through its agents, imports. The procedure differs for merchandise N. V. Technishe Handelmaatschappij “ Helga ” for which import quotas have been established of Curasao, has secured orders for lighting and for goods whose importation is subject to schemes on two airfields which lie in the centre “ prior study.” The quota goods (with the of the American zone of influence. The air limit for the first half of 1947 shown in paren fields, Hato and Dakota, are on Curasao and theses) include copper wire and cables (100 tons); Aruba respectively, two islands in the Nether lead-covered and armoured cables for under lands West Indies. Air lines using this route ground use (500 tons); plates and resistances include Pan American (Curasao only) and for electric cooking stoves (5,000 units); and K.L.M. incandescent and fluorescent lamps (1,500,000 units). Prior exchange permits will only be Engineering Apprenticeship Scheme granted to firms in possession of the authoriza An open competitive examination for tion of the Secretariat of Industry and Commerce. engineering apprenticeships in the Royal “ Prior study” goods include electric motors and Ordnance Factories and the Royal Aircraft dynamos of over 0-25 H.P. and compressors. Establishment at Farnborough, the first step in the Ministry of Supply’s recently announced Diesel Generators for Argentina plan to recruit engineering apprentices on a British Oil Engines (Export), Ltd., the export national basis, will be held at local centres sales division of Associated British Oil Engines, next March. The new national scheme has Ltd., announces that it has secured a contract been adopted to encourage suitable youths to for the supply of thirty-five Diesel electric take up engineering as a career and to raise the generating sets to the Argentine Government, standard of craftsmanship in Government valued at more than £100,000. The sets com factories and in industry generally. Hitherto prise thirty-five Diesel engines, manufactured only Woolwich, the Royal Ordnance Factory by Mirrlees Bickerton & Day, of Stockport, at Enfield and the Royal Aircraft Establishment with electric generators and control gear built have trained engineering apprentices. Now the by the Brush Electrical Engineering Co., Ltd., scheme is to be extended to twelve factories in of Loughborough. various parts of the country. The engines are all to be of the Mirrlees Candidates, who must be between the ages vertical four-stroke airless injection cold starting of sixteen and eighteen, will be expected to type, with a bore of 8 J in. and a stroke of 13J in. reach Higher National Certificate or equivalent Four of them are “ TLB5 ” type five-cylinder standard by the end of their apprenticeship, engines, developing 262 B.ELP. at 600 r.p.m., which will last five years. There will be chances, each direct coupled to Brush protected type during apprenticeship, for the boys to gain salient-pole revolving-field three-phase alter engineering scholarships to the universities. nators, each of 220 kVA output at 0-8 p.f., While it is hoped that the boys will afterwards 400/230 V, 50 cycles, with overhung exciters. stay on in Government factories, they will be December 20, 1946 E l e c t r i c a l R e v i e w 1025
free to go where they please, and the scheme number of firms employing graduates, as com will thus serve the interests of the engineering pared with 1939, is 35 per cent, and the increase industry as a whole. The latest date for receipt in the number of graduates to be employed is of applications for the examination is January 62 per cent. The number of firms in favour of 31st. Copies of regulations and forms of a period of post-graduate research at the application are available from the Secretary, University before recruitment is 20 per cent, Ministry of Supply, Room 268 (Exam.), Shell and the firms offering openings for graduates is Mex House, Strand, London, W.C.2. Craft as follows:—Scientific (research and develop apprentices will also come under the new ment) capacity, 41 per cent; technical capacity, scheme. They will be chosen at interviews with 87 per cent; managerial capacity, 59 per cent. local apprenticeship boards. Dutch Refrigerator Production British Industries Fair The Dutch Government has decided to end The President of the Board of Trade has the importation of refrigerators from abroad, appointed a panel of architects to co-ordinate the Haarlem shipyard “ Holland-Nautic ” the general layout and to approve and prepare having started the production of refrigerators stand designs for the London sections of next some weeks ago. The firm turns out models May’s British Industries Fair at Olympia and for operation on oil, gas or electricity—at E a rl’s C o u rt. present at the rate of ten a week. In the New Year, production will be increased to 100 a week, Reports on German Industry of which 20 per cent will be for the domestic Latest reports upon German industry pre market and the balance exported to Belgium, pared by British and Allied investigating teams France, South America and South Africa.— include the following:—B. I.O. S.779. “ Pro Reuter's Trade Service (The Hague). duction of Seamless Metallic Pyrometer Sheaths and Electric Resistance Alloys” by Heraeus New House Journal Vacuumschmelze A.G., Hanau A.M., and at The varied social activities of the staff of Sterbfritz (Is. 6d.). B.I.O.S.951. “ The Mag- Johnson, Matthey, & Co., Ltd., will in future netophon Sound Recording and Reproducing be recorded in a bi-monthly magazine with the System” (10s.). F.I.A.T. 788. “ Aluminium title “ The Bulletin.” The December-January Hydroxy Chloride Production at Ludwigshafen issue, a copy of which we have received, contains, by Electrochemical and Chemical Methods ” in addition to reports on social activities, (Is.). A few copies are available from the interesting articles on the company’s educational Stationery Office at the prices quoted, postage facilities, the story of the company’s smelting extra. works, and explanatory notes on the National Surplus Machine Tool Sales Insurance Bill, 1946. A large selection of good quality Government- Shopping Centre Lighting owned general purpose machine tools declared In the article under this title in our last issue surplus will be available at two additional it was stated that the fluorescent coating powders selling depots which the Ministry of Supply is in the lighting tubes raise the overall efficiency opening next month. The depots are at Stormy to 25 lumens per watt. The figure should Down Airport, Pyle, nr. Bridgend, Glamorgan have been 45. (opening on January 8th), and at Madingley Road, Cambridge (opening on January 22nd). The tools may be inspected between 10 a.m. Contractors Summoned and 4 p.m. Mondays to Fridays inclusive, and Three summonses alleging breaches of the offers to purchase may be made in the site. factory regulations at the premises of F. W. Blanshard, Ltd., registered electrical contractors, Scientifically Trained Personnel of Oval Road, Croydon, came before Croydon The Manchester Joint Research Council, Magistrates’ Court recently. It was stated which has carried out a survey in the Greater that an inspector who visited the premises Manchester Area in an effort to assess the noticed that the absence of a cover exposed the increase to be expected in the number of scien terminals and conductors of the switch con tifically trained men to be employed by industry trolling the main supply. The switch was in the coming years, as compared with the energized. There was also a double-pole number before 1939, has now' issued a report. metalclad switch which was not properly A questionnaire was issued to a representative earthed, and a small motor beneath a bench cross-section of the industrial firms in the area also lacked an earth. asking for information on the degree to which For the company, it was explained that a employment of graduates would ^ be increased new distribution board was being installed, over the numbers employed previous to 1939, and the double-pole switch was put in tem and from the replies the Council has prepared porarily to facilitate the work. It was in accor a summary of the figures. These show that in dance with electrical practice not to the engineering industry the increase in the temporary switches when svork was in ' 1026 E l e c t r i c a l R e v ie w December 20, 1946 in connection with them. The cover had been This has a pleasing binding in maroon leather removed temporarily from the mains switch and contains a great deal of electrical data in while work was being carried out on it. There addition to the usual commercial information. was no danger to factory operators, who had Brook Motors, Ltd., has sent us a wall no occasion to go near the switches, and the calendar with two months on a sheet each of men working on them were experts. The bench which bears an excellent photographic illustra motor had been removed for repair, and by an tion showing some of the applications of the oversight the earth wire was not reconnected company’s a.c. motors. when the m otor was replaced. A cut-out representation of a watt-hour meter, The summons relating to the motor was with monthly date slips, forms the 1947 calendar dismissed under the Probation of Offenders’ of Venner Time Switches, Ltd. Act, on payment of 4s. costs, and fines amount The calendar of the Northmet Power Co., ing to £15 were imposed on the other two for 1947 has some excellent coloured pictures summonses, with 5s. costs. of rural scenes within the company’s area of supply. Each page covers three months. Employers’ Organizations Merger The Leycester Hospital, Warwick, a repro Proposal duction from a picture by Noel H. Leaver, adorns the calendar which we have received Members of the Federation of British In from Linealux, Ltd. dustries and the British Employers’ Confedera tion have agreed in principle that the two New Zealand Imports organizations shall be merged into one body with one council, president and staff. A scheme Imports of electrical machinery and equip of amalgamation is to be prepared for sub ment into New Zealand during the first half mission to the members of the two bodies. of 1946 were valued at £1,714,000, against The function of the Confederation is to deal £1,356,000 during the corresponding period of with labour questions while the Federation is 1945, and imports of radio apparatus £127,000, concerned with commercial and economic against £253,000. matters. During the war there has been close co-operation and both organizations now have Christmas Holidays their offices in the same building, 21, Tothill The Saxonia Electrical Wire Co., Ltd., will Street, London, S.W .l. close from December 25th and re-open on Monday, December 30th. E.D.A. Sales Conference The head office of the Jackson Electric Stove The British Electrical Development Associa Co., 143, Sloane Street, London, S.W .l, will be tion notifies us that the date of the next E.D.A. closed from mid-day, December 24th until Sales Management Conference in London has Monday, December 30th. been fixed for May 7th, 8th and 9th, 1947. Trade Announcements Bristol Electric Club F. W. Cook & Co. (Southampton), Ltd., formerly of Hanover Buildings, and 57, Shaftes The annual dinner of the Bristol Electric bury Avenue, have now opened temporary Club will be held on January 10th at the Grand showrooms at The Strand, Southampton. The Hotel, Bristol. address of their electrical workshops is now 113, Manufacturers’ War Service Highfield Lane, Southampton, and their engineering stores and workshops are at Vincents The change-over to war production by Walk, Southampton. Their branch in the Isle Gent & Co., Ltd., during 1939-45 was almost of W ight is, as before, 87, High Street, Shanklin. 100 per cent and the company undertook the James Scott & Co., of Chapel Street, Dun design, development and production of a wide fermline, have removed their office to larger range of components and instruments. Much premises at 47, Campbell Street, Dunfermline. of the work was secret, but the company has The telephone numbers remain unchanged. now issued a booklet which tells by illustration and brief notes the story of the effort made to supply the varied requirements of the Services, TRADE MARKS which included components for radio, radar, fM7HE following application has been made beam approach equipment, anti-U Boat devices for the registration of a trade mark. and instruments, and air-raid syrens. Objections may be entered within a month fro m D e ce m b e r 4 th :— Calendars and Diaries W o r l d W i d e (design). B641.988, Class 11 A view by E. W. Haslehurst, R.I., R.B.A., Electric refrigerators, radiators, cookers, fans, of Chiddingstone, Kent, makes a charming old- immersion heaters and electrically-heated cook world picture for the tasteful calendar of Milne ing utensils included in Class 11, and parts & Longbottom, Ltd. thereof not included in other classes.—World The British Vacuum Cleaner & Engineering Wide Distributors, Ltd., 25-27, Oxford Street, Co., Ltd., has sent us a pocket diary for 1947. London, W .l. December 20, 1946 E l e c t r i c a l R e v ie w 1027 An All-Electric House Twenty-two Years’ Experience
UST over twelve years By S. Parker Smith, rate No. 1 : nine times ago an account was J C.B.E., D.Sc. primary kWh at 0-6d. given in the E lectrical Secondary rate No. 2: all Review (Vol. CXV, p. 505) of the electricity additional consumption at 0-3d. per kWh. costs incurred over a period of ten years in (g) As under (/), except that additional the all-electric house of ten rooms described kW h are charged at 0-25d. in the I.E.E. Journal, Vol. 64, p. 289. It is (h) As under (g), except that garage was now possible to give the corresponding in c lu d e d . figures for twenty-two years. These are O’) A s u n d e r (h), except that the 0-25d. shown for each year (beginning in May) in tariff was raised to 0- 3d. for last two quarters. Fig. 1, which also indicates the effect of tariff ([k) As under (h) except that all additional changes at the points on the abscissae indicated kWh are charged at 0-3d. by lettering as lollow s:— It is not easy to state the num ber of persons (a) Fixed charge, £12 10s. 0d., at 12i per in the household. At the start there were
F ig . I.—Consumption and costs for the twenty-two years cent of assessed rental (£100), day kWh at six persons (wife and self, two young children, id., night kWh at fd. two maids). There was a gradual decrease (b) Fixed charge, £11 0s. Od. at 10 per cent until, since 1942, there have been three of assessed rental (£110); kW h as before. persons (wife and self, daily help). The (c) Fixed charge, £7 10s. Od. (15s. per reduction in consumption called for during room ); kW h as before. the war is shown in Fig. 1. (d) Fixed charge, £5 10s. 0d.—one room Thanks to the courtesy of Mr. George at 20s. plus nine rooms at 10s. each; day Morgan, general manager of the Glasgow kWh at id., night kWh a t 0 -3 d . E f f e c t o f C o a l P r ic e o n C o st s (e) Fixed charge as Coal cost per Cost per kWh sold Percentage of u n d e r (d ) ; k W h , a ll a t f d. Year ton coal cost to s. d. (/) Primary rate, 40 Coal d. Total cost d. total cost kWh for one room and 1925-26 19 0 0-2 1-57 12-5 19 0 20 kWh for each of nine 1938-39 0-15 0-68 22-1 1945-46 44 0 0-42 0-83 50-7 rooms at 3d. Secondary 1028 E l e c t r i c a l R e v ie w December 20, 1946
Corporation Electricity Department, the At no time during the war did the supply effect of coal costs (including handling fail. From now onwards heavier charges charges) can be seen from the accompanying must be expected because the 0- 3d. tariff has table. become 0-4d. Incidentally, with the tariffs in These figures are illuminating. They show force since 1934, the overall cost per kWh the big drop in production costs while coal was not much different for a three-room house charges remained steady and the big rise using 10,000 kWh per annum from that for during the last war as coal became dear; the writer’s ten-room house using 24,000 kWh the predominating effect of the cost of coal per annum . on present charges (twenty years ago it scarcely affected the price of electricity); Comparison with the earlier article will show the favourable tariffs in Glasgow lor domestic slight differences in consumption and costs. This arises from the fact that the periods now users, which become less than half of the used are the Glasgow Corporation survey years average production costs when used in the to accord with tariff charges. The small writer’s house. differences do not affect the overall results. \E W BOOKS Piezoelectricity. By W. G. Cady. Pp. 806; physicist S. Butterworth, a man never adequately figs. 163; index. McGraw-Hill Book Co., honoured except by his fellow-workers, who Aldwych House, London, W.C.2. Price 45s. will chuckle at the thought of Butterworth’s Professor W. G. Cady’s recently published dry grin when he sees himself elevated to this book is a monumental work—a comprehensive position of honour with Tennyson, Ovid, treatise on the whole domain of crystal physics Machiavelli and Goethe. Finally one cannot that centres round piezoelectricity. The subject forbear to quote this heartfelt truth from is surveyed in that detail and documented with Chapter 28. “ If Nature had paid more atten that thoroughness that we used to associate tion to the production of large and perfect with German rather than with American tourmaline crystals instead of giving birth to professors. It is typical of the whole book so many quartz twins, all who are concerned that the mathematical development starts with with the applications of piezoelectricity would a pair of general equations for thermodynamic be deeply appreciative.” These graces give potential, each containing 55 terms, and that character to a work that will stand for some the bibliographies total some 1,000 references. time as a very solid contribution to the literature Inevitably the modest engineer in search of of contemporary physics.—L. H. some definite item of information will frequently The World of Industry. By A. P. Young, O.B.E. find himself bogged and will turn to smaller Pp. 342; figs. 146. George Gill & Sons, and less exhaustive treatments, but to the Ltd., 67-68, Chandos Place, London, W .C.2. mature physicist and serious research student Price 12s. 6d. the work will be invaluable. Starting from the belief that industry occupies Cady was the first man to devise quartz most people for about half of their working resonators as standards of frequency. He first hours, and thus is the most potent influence brought them to Europe over twenty years ago upon their personalities and outlook, Mr. and had the immediate satisfaction of seeing Young sets out to show how industry may his idea adopted and extended all over the be so organized and operated as to secure world. He has in this book systematized the a real industrial democracy with the highest enormous mass of scientific information on id eals. the subject that has accumulated since that time. To achieve his aim he has brought together The technical applications are only treated a vast amount of material and has classified it insofar as they illustrate the scientific side of and shaped it to give a quite remarkable picture the subject. of the growth of industry, its purposes and It is refreshing to find Cady’s sound common- achievements, and its present state. Particular sense frequently breaking through his wide attention is paid to the “ working team ” in a learning and passion for generality. He dearly chapter which deals with the relationships of loves an all-embracing equation, but at the workers between themselves and with their same time he is capable of the magnificent em p lo y ers. simplicity of this definition: “ A piezoelectricity Mr. Young’s last chapter deals with the crystal is one that becomes electrified on future of industry. He thinks that Great squeezing.” Again, in his enthusiasm for his Britain may set an example to the world by the subject, he has embellished the work with economic and social order which is being built chapter headings selected from the world’s up here and he looks forward with optimism literature. He can, however, include among to eventual world co-operation which “ will these a quotation from a paper by the British lead us to better pastures.”—J.H.C. tLECTRICAL REVIEW 1029 ELECTRICITY SUPPLY Cable Only for New Houses. Walsall Profits Problem.
A berdeen.—G r i t N u i s a n c e C o m p l a i n t .— 5 rt\ engineer and manager (Mr. H. Pryce-Jones) in Residents of Ferryhill have decided to petition atos a report to the Electricity Committee, are a the Town Council asking for immediate action clear indication of the serious shortage of to be taken to alleviate the inconvenience generating plant throughout the country; the caused by the emission of grit from the power Committee has placed on record its appreciation station chimneys. of the results obtained by the engineer and his Aldridge (Staffs).—C o n v e r s i o n o f S t r e e t staff. ■aas L i g h t i n g .—The Urban District Council at its P o w e r S t a t i o n E x t e n s i o n s .—Having now *d ¡® last meeting adopted the principle of lighting had directions to proceed with the extensions the public lamps by electricity and decided to at Southwick power station, the electrical purchase the necessary equipment. Councillor engineer has submitted the following estimates C. Rowley explained that through factors out of totalling £7,555,000:—Building and civil works their control, many gas lamps were not com £1,790,000; generating plant £1,114,000; boiler pleted, and it was almost impossible to replace plant £2,880,000; coal and ash handling plant broken mantles. The new scheme would be £175,000; circulating water system £432,000; costly, but they were determined that their area switchgear £210,000; general electrical works should at the earliest possible date have as good £200,000; other works £67,000; and contin street lighting as other places. gencies, fees, etc., £687,000. It is proposed ■tops that in addition to the control and adminis Belfast.—No C a b l e .—Replying to a com feis tration of the whole scheme as chief engineer, SBTjjj plaint at a City Council meeting that people could not get electricity installed, Alderman Mr. Pryce Jones shall be appointed mechanical isdiaa and electrical engineering consultant, with ¡¡s. On M’Kee agreed that the Electricity Department had applications from several hundreds of Mouchel & Partners as consulting engineers people who had their houses wired in the for civil engineering and building work other than the circulating water system, wharves, ast e- expectation of getting supplies. The position, he said, was that the Department had not got dredging, etc., for which the consultants would a! ¡e: be Sir William Halcrow & Partners. stitai one yard of underground cable in stock. It was dependent on a quota allocated from Great Burton-on-Trent.—S u p p l y t o E s t a t e .— T h e E C0S5E Britain for new houses completed by the Electricity Committee has obtained sanction to irons Corporation and the Housing Trust. No cable borrow £3,740 for providing a supply to the EJC5 E would be released to enable a house to change Rolleston housing estate. from gas to electricity. Cwmbran (Mon.).— T a r i f f C h a n g e s . — N ew
Birkenhead.—L o a n .— The Corporation Elec tariffs to come into operation on January 1st tricity Committee is seeking sanction to borrow provide for a flat rate of 4d per kW h for lighting 002 !, 03i £50,000 for mains and services. and Id for heating, cooking and certain business Git So purposes, with an alternative “ all-in ” rate. ata,W.C B lackpool.—P u r c h a s e o f G o v e r n m e n t E q u i p m e n t . —To carry out improvements at Darlington.—O v e r h e a d L i n e .— The North- Eastern Electric Supply Co., Ltd., is to erect an BUjffiJS the Peel substation, cables and switchgear are to be bought from the Air Ministry by Blackpool overhead line from Bishopton to Great Stainton. liar tecs Corporation at a cost of £17,944, and application —C a n t e e n E q u i p m e n t .— 82! ilte Gateshead. E lectric is being made for permission to borrow the oulioot, t kitchen equipment costing £650 is to be pro money. The equipment has been in use at vided in the Corporation Transport Department ijteaia the Squires Gate factory. C an teen . is io itisias B oston.— S t r e e t L i g h t i n g . —Six street lamps G rim sby.—S u p p l y t o W e l t o n - l e -W o l d .— are to be provided for each of eleven villages The Electricity Committee is to supply electricity in the area of the R.D.C. where at present there to Welton-le-Wold at a cost of £6,008.
is a supply of electricity but no street lighting. H a lifa x .— N o C h o i c e f o r M u n i c i p a l B rig h to n .— R e c o r d O u t p u t . —Since early in T e n a n t s .—A recommendation of the Housing 1943 various units of generating plant at the Committee that, as a m atter of policy, municipal Brighton Corporation’s power station at South- houses should have electric lighting, gas cooking wick have been out of commission owing to and wash boilers and that where bedroom breakdowns, and it was only on October 23rd radiators were included in the specification they that the whole of the plant, of a nominal rating should be electric was approved by the Town of 140,000 kW, was available for service. On Council last week. Moving the reference back October 24th the output and the maximum of the proposal, Councillor Miss M. Pickles eais •# * expressed the view that tenants should have the i thai Gis demand were higher than at any time since the station was commissioned in 1904, the figures choice of cooking by electricity or gas. Coun being : kWh generated, 2,443,000, and maximum cillor J. Burdock seconded the amendment and demand, 143,100 kW. These figures, states the Alderman J. H. Stephenson, supporting it, said “«i 1 03 0 E l e c t r i c a l R e v ie w uecem oer ¿u, u-tu that with the apparatus to be installed municipal the circumstances the Electricity and Public tenants could not use enough electricity to take Lighting Committee has adjourned considera advantage of the cheap rate. Replying, Coun tion of the matter until the spring when the cillor A. Pickles, chairman of the Housing financial position of the undertaking will be Committee, said that the Committee would clarified. like to give each tenant the service he chose, Southend-on-Sea.— P o w e r C h a r g e s .— In the but it was not so easy in these early stages of case of consumers with a demand up to 500 kW housing. When supplies were normal the and an annual consumption of not less than Committee would like people to exercise the 40,000 kWh, the Council has approved a tariff option they had in the past. After the amend of £5 per kW, plus Jd per kWh consumed with ment had been defeated Alderman Stephenson an increment of 0-0009d for each Id by which asked whether a new tenant could have electrical the cost of coal exceeds 38s a ton. E. K. Cole, equipment installed if he paid the hire charge. Ltd., with a demand of 2,000 kW, are to be Councillor Pickles replied that the Committee charged £4 12s 6d per kW, plus id per kWh had not decided the point. (with coal clause as above). Hammersmith.— C o n c e s s i o n t o m a r k J u b i l e e . Sco tlan d .—S u p p l y i n g I s o l a t e d D i s t r i c t s .— —As 1947 will be the Jubilee year of the Ham m er The North of Scotland Hydro-Electric Board smith Borough Council’s electricity undertaking has brought electricity to the village of Finstown, the Council decided last week that the 25 per near the Bay of Firth, Orkney. This is the first cent increase in charges which is already in village to receive electricity under the Board’s operation shall be reduced to 15 per cent scheme to bring supplies to the isolated districts as from January 1st. in the north of Scotland. Twenty-two con H ove.— D a n g e r o f B r e a k d o w n .— T h e sumers, including the local hotel, Post Office steadily rising demand for electricity caused by and four shops, have been connected to the the connection of new consumers and the main transmission line from the Board’s increased use of electrical appliances has caused generating station at Kirkwall. The shops and the Electricity Committee serious concern. It many of the houses have fluorescent lighting. is becoming increasingly difficult to obtain W alsa ll.—P r o b l e m o f U s i n g P r o f i t s .— replacement plant and cables and new machinery Members of the Town Council at a special required for extensions and in an endeavour to meeting held to consider the reports of the avoid the danger of a complete breakdown, it three trading undertakings were warned that if has recommended the re-imposition of the war they adopted a recommendation of the Electric time rule that where alternative forms of heating Supply Committee they would be breaking the are available no further connections for heating law. The Committee’s recommendation, moved should be permitted. by the chairman (Alderman J. Cuff Tibbitts), Martley (Worcs.).— E l e c t r i c i t y E x t e n s i o n . was “ that in view of the abnormal conditions —It was reported to a meeting of the Rural obtaining at the present time, the surplus District Council that the manager of the Shrop amount of £19,157 remain in the electricity shire, Worcestershire & Staffordshire Electric undertaking reserve fund, notwithstanding the Power Co. had promised to do his utmost to fact that the Committee is aware that such get a supply of electricity to Suckley as early as reserve fund should be limited to 10 per cent of possible, but could not guarantee it in under a the capital expenditure of the undertaking.” year as there was delay owing to the shortage The Finance Committee put forward an o f p o les. amendment that the money should be used for Newcastle-under-Lyme.—S u p p l y S c h e m e s .— the reduction of the outstanding debt, but in Old distributors in certain roads are to be the course of argument it was pointed out that replaced at a cost of £4,740 and the mains there was a likelihood of the undertaking being extended to Clayton Farm estate, £16,200 taken over at the figure of its outstanding debt. (including erection of substation), with other Alderman A. J. Stanley suggested that by extensions costing £2,770. charging consumers more than they ought to Perthshire.—C a b l e s A c r o s s R i v e r T a y .— pay the Committee had accumulated more The first underwater electricity cables across money than it was entitled to hold, despite the the River Tay in Perthshire were laid last week. advice of the borough treasurer and the criticism They will link the Carse o’ Cowlie and Angus of the Finance Committee. with Abernethy power station. Alderman E. H. Ingram, for many years St. Pancras.— P r i c e I n c r e a s e N o t S a n c chairman of the Finance Committee, said it t i o n e d .—At its meeting last July the Council had become almost a fetish for the trading approved, subject to the-consent of the Elec undertakings to make as much profit as tricity Commissioners, various tariff revisions possible for the relief of the rates. estimated to yield an additional sum of £17,666 A long debate ended in the Council’s for the financial year. It is now reported, how accepting a suggestion by the M ayor (Councillor ever, that the Commissioners are not prepared to A. W. Percox), that the Electric Supply Com consider the proposed increase until revenue is mittee and the Finance Committee should try reduced by an amount equivalent to the income to find another and less contentious method expectea to be derived from the increase. In of using the money. wwr,.(SC/ AV, lSW O E l e c t r i c a l R e v ie w 1031 N.W. England Scheme prior to the Christmas holiday in connection with the claim submitted by the E.T.U. for the Four New Selected Stations payment of wages at normal rates upon bank, r|lH E Cenlral Electricity Board has received statutory and national holidays when no work from the Electricity Commissioners a is performed thereon, no wages will be payable further Amending Electricity Scheme for upon any of the days referred to above which North West England and North Wales pro are observed as holidays. Further, no wages viding for four new generating stations, with will be payable in respect of any additional days first sections each comprising an installation observed as holidays in individual establish up to 130,000 kW of generating plant, to ments over the Christmas and New Year holiday become selected stations. periods. Should individual operatives be called Twenty-nine selected stations are at present upon to work on any day (other than a day operating in the area under the existing Schemes, which is a holiday in accordance with either the which also make provision for the construction National or any applicable Local Working of three further new stations. In making Rules) declared a holiday in the establishment representations to the Commissioners for the concerned, wages at bare time rates will be formulation of the present Scheme, the Central payable, with overtime rates for all work Electricity Board pointed out that all the new performed outside the normal working hours. selected stations specified in the earlier Schemes for the Area have already been allocated and Electricity and the Community indicated that, as a result of a review of the A DDRESSING the newly formed Lancaster prospective plant requirements, it had come to Engineering Society, Mr. E. R. Wilkinson the conclusion that it would be necessary to (commercial manager, Central Electricity Board) take steps for the establishment of at least four suggested that the time at which an invention other new stations. Of these, one is required became of significance to a whole community, in time to meet the estimated demand arising and not its inception, was the real beginning of in East Lancashire in 1950 and the others to a new era, as when, for example, the establish meet the anticipated growth in the demand in ment of the grid and the accompanying other parts of the Area in later years. standardization of frequency began to make Copies of the Scheme entitled “ The North electricity of general availability. Standardiza West England and North Wales Electricity tion of frequency was estimated in 1924 to (Alteration and Extension) Scheme, 1946,” entail an expenditure of £10-5 million, but by together with an explanatory memorandum by 1928-30 when the work was put in hand the the Commissioners are obtainable from the figure had increased, due to the delay, by Stationery Office. £6-5 million and later might have become prohibitive. Over 1,900,000 H .P . o f co n su m e rs’ Contracting Industry motors and 900,000 kW of generating plant were changed over without dislocating industrial Agreements production, while the cost amounted to only tBiHE National Joint Industrial Council for 0 63 per cent of the present revenue of the the Electrical Contracting Industry supply industry. This experience showed that has agreed to continue in force (some with voltage standardization at 240 V (to cost now certain modifications) certain wartime agree about £18-5 million) should be regarded as ments. Others which were only applicable in u rg en t. wartime conditions have been cancelled. The speaker then showed by statistical New agreements have been arrived at in diagrams that the capital expenditure per kW connection with allowances, etc., on country by the supply industry was already substantially jobs; payment of lodging allowance during the less than it would have been without the grid week of annual holiday with pay; and payment and that heat consumption per kW had been of “ country money” during absence from the reduced by 9 per cent by 1938. A further job. advantage of the grid was the opportunity it Mr. L. C. Penwill, director of the Electrical provided to British manufacturers of demon Contractors’ Association, has reminded E.C.A. strating to the world their ability to construct members that all hours worked on Christmas large high-voltage power equipment. During Day must be paid at double rates; work on the last war (in contrast with that of 1914-18) Boxing Day is to be paid for at time and a half; factories did not need to install private generat and in the Derby, Leicester, Nottingham and ing plant, as individual loads up to 50,000 kW Scarborough areas time and a half is payable were supplied as a result of the grid, while for work on Friday, December 27th. sites could be selected in less vulnerable areas. Local working rules in certain towns in the Without the speeding up of armaments produc North-Eastern area and in Scarborough, tion thus made possible, the end of the war Sheffield, Manchester and Salford prescribe might have been disastrously delayed. New Year’s Day as a holiday, work on which is With productivity per worker and hours of to be paid for at time and a half. work of 1938 there would be a deficiency of Unless agreement is reached by the N.J.I.C. output of well over 30 per cent compared with 1032 E l e c t r i c a l R e v ie w December 20, 1946
national needs. To approach the pre-war standards of the United States in comparable Fuel Economy in Great Britain industries, about 13 million H.P. of additional REPARATORY material for the British industrial machinery (compared with 1938) P contribution to the Fuel Economy Con would be required. In addition to increasing ference to be held at the Hague next September mechanisation, engineers had the duty of has been published by the World Power Con improving efficiency of utilization of fuel ference in a 52-page “ Report on Fuel Economy resources; railway electrification, for example, since 1939 ” (Is. 6d.). The document covers would save 10 million tons of coal each year. all aspects of the fuel efficiency campaign and Atomic energy might be applied within ten to fuel restrictions during and after the war, the twenty years, probably in central stations from rise in prices and output of coal and the techno which the power would be distributed as logical problems (with examples) that make for electricity. ______economy in use. A six-page bibliography lists the large number of publications on the subject Electrodepositors’ Technical during the period. Regarding electricity supply, it is stated that Society the rise in coal consumption from 15-9 million fWfO mark its coming of age, the Electro- tons in 1939 to 23-5 million tons in 1945 neces depositors’ Technical Society held a sitated widening the range of fuels to include soiree at the Northampton Polytechnic Institute, duffs, slurries and an increased proportion of London, E.C. The principal item on the agenda dry slacks of high ash content. As gas coals was the presentation in token form of the first have been in particularly short supply, house medal to be struck for the Society to Mr. coals and suitably graded coals have had to be Samuel Field, its first president, who was largely diverted to gas making from their normal uses. responsible for the Society’s formation. The Railway consumption rose from 13 to 14 million actual medal will be handed to him during the tons per annum and no large-scale use of inferior international electro-deposition conference next coals has been practicable owing to steam- M ay. locomotive shortage. Technical problems aris The ceremony was performed by Dr. S. ing out of the increased demand for electricity Wernick, the president, who up to the time of are concisely and accurately explained. In his election to that office last year had been addition to the 37,285 million kWh generated in hon. secretary (a position now filled by Mr. 1945 by authorized undertakings, 4,599 million S. W. Baier) almost from the outset. The kW h was generated at factories and 1,545 million medal is international in its scope and is to be at coal mines; “ a considerable amount” of awarded at intervals of not less than one year. non-electric power was also in use. Dr. Wernick, after reading congratulatory Referring to the advantages of combined messages from kindred associations in many power and heating, it is stated that “ consider parts of the world, gave a brief account of the able savings of fuel have been made by transfer formation of the Society in 1925, mentioning the to public electricity supply of consumers whose encouragement it received from the Faraday need for process steam was not equivalent to Society, and of its steady development since their power requirements.” Mention is also then and its regular meetings throughout the made of the inefficiency of compressed-air w ar. power and the losses its use entails in collieries. Mr. Field related how, in 1897, when Head of the Department of Applied Chemistry at the Northampton Polytechnic (a position from which he retired in 1937), he gave what was Diesel-Engine Working Costs probably the first course of lectures to students fWIHE form of the report on heavy-oil engine on electro-plating. Since the foundation of the -*• working costs issued annually by the Diesel Society in 1925, progress had been spectacular; Engine Users’ Association has not been changed, this was largely due to collaboration between largely consisting of tabulated statistics. It theoretical and practical workers, which it was shows that in 1944-45 the fuel consumption the aim of the Society to foster. New metals averaged 0-626 lb/kW h generated, being 6-5 per had been introduced and researches into the cent below the arbitrary standard, at an average deposition of alloys promised well for the future. running plant load factor of 63-8 per cent. The number of formulas for solutions had been Home stations containing 132 engines totalling reduced to a few of constant composition and 39,920 kW generated 26,702,892 kWh during their effects could be closely controlled, while the year at a total engine cost of l-122d/kWh. automatic plants had multiplied a thousand Fuel oil cost 224s. per ton and lubricating oil fold. He expressed his faith in the latent powers 3s 8d per gallon, both including tax and of the intellect (each worker making his con delivery charge. tribution, however small) to make clear many Overseas stations containing 63 engines scientific mysteries, among which were the totalling 29,891 kW generated 53,523,715 kWh fruits of Faraday’s investigations into the at a total engine cost of 0-766d/kWh, using migration of ions and the collection of some 0-6 lb/kW h of fuel oil, which cost 164s per ton of them for service to man. while lubricating oil cost 5s 04d per gallon. r -v*, * y-tu E l e c t r ic a l R e v ie w 1033 FINANCIAL, SECTION Company News. Stock Exchange Activities.
Reports and Dividends subsidiary companies each bearing the parent company’s initials but with its own distinctive The Sun Electrical Co., Ltd., reports a trading name. They had recently negotiated arrange profit for the year ended April 30th last of ments with Major E. Armstrong, inventor and £22,527, as compared with £20,514 for the pioneer of the new frequency modulation preceding year, and a net profit of £20,106 system for broadcasting and radio communica (against £18,915). As already announced the tions and had secured the latest designs and ordinary dividend for the year is 4| per cent manufacturing technique from Radio Engineer (against 2J per cent), and after applying £1,500 ing Laboratories, an American company, to lease redemption reserve and £3,500 to which manufactured frequency modulation income tax reserve, a balance of £2,144 is transmitting apparatus for the Armstrong carried forward (against £2,112 brought in). system. The E.M.I. research laboratories had In his statement issued with the report and recently demonstrated to members of the accounts, Mr. R. Tweedy Smith (chairman) Government Television Committee and to repre says that the heavy demand for the great sentatives of the B.B.C. their new system of majority of the products handled by the company televising motion picture films. Before the which arose at the conclusion of the war shows war their companies established a range of no sign of abatement, particularly in the case of domestic electrical appliances, and during the installation equipment for the new housing past twelve months this branch of their activity schemes, of which a large proportion of the had been revived, with new and more extensive company’s output now consists. Mr. A. G. designs. This apparatus was made and dis Beaver, who has been general manager and tributed with the H.M.V. trade mark. To meet managing director since 1902, has expressed a the need for technical and engineering instruc desire to relinquish some of his duties and his tion, they had set up a college, under E.M.I. office as managing director. The board there Institutes, Ltd., and had acquired the London fore proposes to appoint Major E. J. Beaver Radio College at Chiswick for the operating and Mr. R. J. Rawlings (who have been executive centre. directors since 1935) as joint managing directors Dccca Record Co., Ltd.—Referring to the as from May 1st, 1947. Mr. Tweedy Smith Decca Navigator in his address at the annual feels that in recognition of the valuable services meeting last week, Sir Cyril F. Entwistle (chair rendered by Mr. A. G. Beaver as managing man) said that during the past twelve months director, the board should elect him chairman. there had been intense activity, and striking Mr. Tweedy Smith has expressed his willingness progress had been achieved. At the request of to accept the board’s invitation to act as responsible authorities in various countries deputy chairman. fourteen detailed plans for the erection of Decca E lectric & Musical Industries, Ltd.—Presiding major transmitting chains had been submitted, at the annual meeting held on December 12th, and a contract had been placed by the Danish Sir Alexander Aikman (chairman) said that Hydrographic Department for three stations the year had been one of attempt to turn round and a number of receivers for survey work in to peacetime work but only a comparatively Greenland. The Admiralty was using the system small proportion of their reconversion plan had for survey work in the Thames Estuary and the been achieved. A considerable amount of Dutch Navy had a number of receivers for reorganization at Hayes involving a scheme of minesweeping use off the coast of Holland. decentralization had been set afoot and was In August, by arrangement with the Ministry of nearly completed. They had been in contact Transport, they began equipping merchant with their companies and agencies in European vessels with their receivers and over thirty had countries, which had been closed to them during already been fitted. A valuable accessory that the war and steps had been taken where advis had now passed through the development stage able to renew their activities. was a tracking device enabling an aeroplane of a Sir Ernest Fisk (managing director), in ship to follow exactly any predetermined course. seconding the motion for adoption of the A wholly owned subsidiary, Decca Navigator report and accounts, after reviewing the history System Incorporated, had been formed in the of E.M.I., Ltd., said that they were now able to United States. offer an entirely British television system which Aerialite, Ltd., reports a trading profit for the could be produced wholly by their own organ year ended June 1st last of £29,195, and a net ization. Their fields of activity embraced balance of £14,950, to which is added £9,710 acoustics, electronics, communications and brought in, making £24,660. After deducting allied developments. Decentralization had the preference dividend to April 30th, 1946, and been brought about by forming each of the ordinary dividend to June 2nd, 1945, there their major activities into wholly owned is a balance available for distribution of £14,522. 1034 E l e c t r i c a l R e v ie w December 20, 1946
It is proposed to pay a final ordinary dividend W. H. Wright & Co., Ltd.—Registered for the period ended June 1st, 1946, of 45 per December 5th. Capital, £2,000. Manufacturers, cent, making 55 per cent, less tax, for the year, importers and exporters of, and wholesale and and to carry forward £8,296. retail dealers in, electrical appliances, wireless Mr. L. S. Hargreaves (chairman and manag and television sets, etc. Directors: W. H. ing director) in his statement which accompanies Wright and W. A. Wright. Regd. office: 19, the report and accounts mentions that the Kensington Court Place, W.8. turnover during the year under review has W ard’s of Hull, Ltd.—Registered December increased by 40 per cent. Additions have been 5th. Capital, £1,000. Electrical engineers and made to the plant, and the company has contractors, designers and manufacturers of, negotiated a satisfactory purchase of plant and and dealers in, heating, lighting, cooking, equipment which it had operated on behalf of cleaning and other electrical apparatus, etc. the Ministry of Supply. Directors: F. Ward and H. B. Ward. Regd. The General Cable Manufacturing Co., Ltd., office: 187, Newland Avenue, Hull. reports profits for the year ended September 30th Whitfield & Robinson, Ltd.— Registered Nov last of £108,955, as compared with £81,278 for ember 15th. Capital, £500. Designers and the preceding year, and a net profit of £103,616 manufacturers of, and dealers in, electrical (against £76,383), to which is added £4,000, part equipment, apparatus and supplies, electrical, of deferred repairs reserve no longer required. radio, television and other equipment, etc. Taxation requires £74,186, and £10,000 is Directors: I. M. Whitfield, D. Robinson and placed to reserve. The final ordinary dividend C. A. Robinson. Regd. office: 26, Belvoir is 17 per cent, making 25 per cent for the year Road, Coalville. (against 15 per cent),' and £4,312 is carried forward (against £4,132 brought in). Armature Service Co., Ltd.— Registered Nov The Barbados Electric Supply Corporation, ember 15th. Capital, £1,000. To acquire the Ltd., reports a net profit for the year ended business carried on by D. A. W. Ward, A. C. June 30th last of £21,759, as compared with Ward and E. C. Kensett (who are directors of £19,572 for the preceding year. Tax provision the new company), as the Armature Service requires £12,000 and the dividend for the year Co., at Hove. Regd. office: 66, Blatchington is maintained at 5 per cent tax free. The Road, Hove. balance carried forward is £1,653 (against Woodstock Radio & Electricals, Ltd.- £1,894 brought in). Registered November 14th. Capital, £100. Marco Refrigerators, Ltd., reports a net profit Radio and television engineers, electricians, etc. for the year ended September 30th last of L. Tree is the first and permanent director. £56,699, as compared with £31,526 for the Regd. office: 245, Oxford Street, W .l. previous year, to which is added reserve account Two-Way Talkie, Ltd.— Registered November transfer of £4,035. Taxation requires £42,200, 13th. Capital, £10,000. Designers, manufac and the dividend for the year is 10 per cent turers and distributors of intercommunication (against 5 per cent). The balance carried systems, telephones, electrical and electronic forward is £20,993 (against £8,234 brought in). amplifying equipment, etc. Solicitors: Giles & The Morgan Crucible Co., Ltd., is paying an Hunter, 112, Kennington Road, S.E.ll. interim dividend of 3J per cent. This is the Koldec, Ltd.—Registered November 20th. same as for the previous year but is paid on Capital, £1,000. Refrigeration and cold storage increased capital. engineers, etc. Directors: T. C. E. Eaton and The London Electrical & General Trust, Ltd.. G. H. Craven. Secretary: A. F. Smith. Regd. has declared an unchanged interim dividend of office: 25, Bradstock Road, Stoneleigh, Ewell, 2 p er cent. S u rrey . Powerparts, Ltd.— Registered November 19th. New Companies Capital, £100. Manufacturers and repairers of, London Bros. & Co. (Engineers), Ltd.— and dealers in, wireless and television sets, Registered in Edinburgh December 4th. Capital, accessories and apparatus, electrical fittings, £10,000. Consulting, electrical and mechan etc. Directors: K. C. Bennion (permanent ical engineers, etc. Directors: R. A. Smith managing director) and Belinda L. Montague. and G. B. M. Greig. Regd. office: Temple Regd. office: 11, Portland Street, Hereford. Electric Works, 37, North Tay Street, Dundee. Thompson & Patterson, Ltd.—Registered Ricketts & Hanson, Ltd.—Registered De November 19th. Capital, £1,000. Manufac cember 6th. Capital, £1,000. To acquire the turers of, and dealers in, all types of refrigerators, business of electrical installation contractors fish frying ranges, passenger and goods lifts; carried on by H. Ricketts and F. W. Hanson mechanical and electrical engineers, etc. Direc as R. and H. Electrical Contractors at Long- tors : A. W. Thompson (director of A. W. bridge Lane, Birmingham, 31. Directors: Thompson (Electrical), Ltd.); and S. Patterson. E. H. Ricketts and F. W. Hanson. Regd. Secretary: J. Green. Regd. office: 7, Church office: 181, Longbridge Lane, Birmingham, 31. Street, W ath-upon-Dearne. „ i k i c a l R e v ie w 1035
James Brandrick & Co., Ltd.—Registered Silver Nite Products, Ltd.—Registered November 26th. Capital, £2,000. To acquire November 29th. Capital, £100. Manufacturers the business of general electrical and wireless of, and dealers in, electrical apparatus, radio and merchanting and repair services now carried on television equipment, etc. Directors: L. C. by James Brandrick at 18, Middleton Road, Campbell, D. Gross, H. Wiseman and Eileen M. Royton, as “ James Brandrick.” Directors: Hirschfeld. Regd. office: 46, Curzon Street, J. Brandrick, E. Butterworth ana W. Turner. Mayfair, W .l. Regd. office: 18, Middleton Road, Royton. Warren Electrical Co., Ltd.—Registered Conway & Burt, l td.— Registered November November 28th. Capital, £500. Directors: 26th.—Capital, £1,500. To acquire the business C. E. J. Bayham, 1, Priory Avenue, E.4; and of radio and electrical contractors and dealers H. Bradford. Regd. office: 10, Church Hill, carried on by G. L. Conway and E. Roberts L o u g h to n . at 86, Bromley Road, Horfield, Bristol, as Modern Electrical Engineering Co., Ltd.— Domestic Electric Services. Directors: S. G. L. Registered November 28th. Capital, £2,000. Conway and Dora A. Burt. Solicitors: Parsons Directors: E. S. Heffer and Mrs. Isabel M. & H o rd en , B ristol. Heffer. Secretary: Leslie J. Rice, 20, Charn- W. D. Martin, Ltd.—Registered November wood Drive, South Woodford, E.18. 25th. Capital, £1,000. Electrical engineers Wrexham & East Denbighshire Relay Services, and contractors, radio and wireless engineers, Ltd.—Registered November 20th. Capital, £100. etc. Directors: W. D. Martin, W. Martin and Directors: C. Gaffney and seven others. J. Clayden. Regd. office: 3, Paradise Road, Regd. office: Midland Bank Chambers, High Richmond, Surrey. Street, Wrexham. C.W.C. Equipment, Ltd.— Registered Novem Feltra, Ltd.—Registered November 25th. ber 25th. Capital, £100. Manufacturers of, and Capital, £250. Electrical engineers and contrac dealers in, fluorescent, electric, gas and other tors, etc. Directors: F. Trapp and J. E. lamps, reflectors, switches, wireless valves, Felmingham. Regd. office : 21, Arkwright Street, vacuum devices, etc. Subscribers: G. Conrad Nottingham. and W. C. Willis. Regd. office: 66, Victoria Street, S.W .l. Frank S. Adams, L td.--Registered November Increases of Capital 25th. Capital, £3,000. Manufacturers and Volta Electric, Ltd.—Capital increased by repairers of, and dealers in, electrical and £45,000, in 35,000 preference shares of £1 and mechanical apparatus, wireless sets, etc. Direc 40,000 ordinary shares of 5s., beyond the tors : F. S. Adams and J. Clapton. Regd. office: registered capital of £10,000. The capital has Radio Works, North Street, Wilton, Salisbury. been reorganized and is now £55,000 in 35,000 5 per cent cumulative participating preference Radio & Electrical Services (East Cowes), shares of £1 and 80,000 ordinary shares of 5s. Ltd.—Registered November 21st. Capital, £500. 41,200 ordinary shares of 5s. were recently To acquire the business of a radio and electrical allotted as fully paid as consideration for engineer and retailer carried on by Harold A. 7,555 £1 shares in Stamford Electrical, Ltd., Bowen at 34, York Avenue, East Cowes, I.W. and 1,000 £1 shares in Sipson Engineering, Ltd. Directors: H. A. Bowen and Mrs. A. V. Bowen. Regd. office : 34, York Avenue, East Cowes, I.W. B. Winters & Son, Ltd.—Increased by £2,000 beyond the registered capital of £1,000. Randall Brothers, Ltd.— Registered November 23rd. Capital, £1,200. To acquire the business Multi-Broadcast (Engineering), Ltd.— of electrical engineers formerly carried on by Capital increased by £44,000, in £1 shares, P. Randall as “ P. Randall & Son.” Directors: beyond the registered capital of £5,000. P. H. Randall and R. J. Randall. Regd. office: 21, Glasshouse Yard, E.C.l. Liquidations Billingham Radio Relay, Ltd.—Registered Midland Radio Relay Services, Ltd. — November 22nd. Capital, £2,000. To establish Winding up voluntarily. Liquidator, Mr. A. E. and maintain wireless signal and other stations Limehouse, 24, Market Place, Rugby. Par for relaying wireless programmes, etc. Solicitors : ticulars of claims to the liquidator by December Smith & Graham, W. Hartlepool. Regd. office: 31st, 1946. This is a formal notice, as all Regent House, South View, Billingham. creditors will be paid in full. Frank Griffin, Ltd.—Registered November 29th. Capital, £5,000. To acquire the business carried on at 62, Hockliffe Road, Leighton Bankruptcies Buzzard, as Frank Griffin, and to carry on J. S. Griffin, electrical engineer, 108, High the business of electricians, radio engineers, Town Road, Luton, Beds.—Supplemental divi r OÎ1 ■ etc. Directors: F. E. Griffin and G. E. Griffin. dend of 5s. 8id. in the £, payable December 24th S Pili® Secretary: Miss A. E. Griffin. Regd. office: at the Official Receiver’s Office, 6, The Parade, 60/62, Hockliffe Street, Leighton Buzzard, Beds. Northampton. 1 0 3 6 E l e c t r i c a l R e v ie w December 20, 1946
insignificant decline to £364,000 and cover the STOCKS AND SHARES 15 per cent dividend with a surplus equal TOCK EXCHANGE business is maintained practically to another 15 per cent on the ordinary at a tolerably high level of activity. The capital. At 88s. the £1 shares give £3 8s. 3d. principal feature is the manner in which money, per cent on the dividend which has been main realized by the sale of British Government and tained at the present rate for many years. A other gilt-edged securities due for repayment further strengthening of the already impressive next year, is being directed into industrial balance sheet, added to the conservative char ordinary shares. In the case of many companies, acter of the dividend and the company’s estab the yield at current prices, calculated on the lished trading position, help to consolidate the dividends which are being paid, is about 3| per high place held by the shares among industrial cent, a return which not so many years ago investments. would have been regarded as modest even from “ Tubes ” Consols or War Loan. Tube Investments hardened to 6-JJ on declara Firm Markets tion of a 124 per cent dividend, making 22} per cent for the year. Last year, a similar distribu Dividends are in the main satisfactory. tion was augmented by a special 10 per cent Under conditions now prevailing in regard to from contingency reserve, the repetition of financial operations, it is not surprising that .which had not been expected. anticipation looks for prices to go higher before there will occur that fall which most people Electrical Components regard as likely to take place in a few years’ Electrical Components 5s. shares were time. New issues are offered almost every introduced to the market last May, when the business day. In the great majority of cases published particulars of the business indicated these are readily taken, a premium being an interim payment about January. A dividend established on the issue price as soon as the o f 7 per cent has now been declared. A final market opens, and, what is perhaps more } at the same rate would make the yield on the surprising, improving upon that premium as shares, at 16s., over 4V per cent. Until the market settles down. recently a subsidiary of B.I.C., the company is a wholesale distributor and shipper of electrical Recent Issues accessories of many descriptions. Aberdare Cables of South Africa shares were recently introduced to the market. They are Preference Shares now changing hands around 9s. 9d. for the 5s. Among the most expensive preference shares ordinary, and 26s. 9d. for the 5-^ per cent in the electricity supply market are those preference. This is a new enterprise, formed entitled to a share of assets in the event of to manufacture in South Africa electric cable winding-up. County of London “ sixes ” are a and electrical equipment as produced now by case in point. After repayment of all capital, the Aberdare and South Wales Switchgear they would participate on equal terms with the companies in this country. Later on, the in ordinary capital in the surplus assets. This tention is to extend production to cover some consideration carries sufficient weight to place of the specialities manufactured by International the shares on a yield basis below the average. Combustion. Laurence, Scott & Electromotors At 35s. 6d. the return is £3 7s. 6d. per cent. new 4 | per cent preference shares are quoted By way of comparison, the 6 per cent preference at 23s. 6d. and Dictograph Telephone 5 per shares of Scottish Power, Midland Counties cent preference at 5s. 6d. premium on the price and London Associated, are all quoted at about of 20s. at which they were offered to share 28s. and yield 4-j per cent. Edmundsons 6 per holders. The respective yields are £3 I2s. 3d. cents stand at 27s. 6d., to pay £4 7s. 3d. per and £3 18s. 6d. per cent. cent, whereas the 7 per cent issue at 36s. 6d. yields only £3 16s. 9d. : the latter have capital Company Results participation rights denied to the “ sixes.” Expectations were confirmed by the declara tion of a final dividend of 15 per cent by the Stock Exchange Dealings Plessey Company, engineers and manufacturers On Wednesday of last week the Stock Ex of telephone and radio equipment. This change reintroduced the system of fortnightly payment is 5 per cent above last year’s, and accounts in place of the wartime procedure with the similarly increased interim, makes a under which all bargains were for cash. This total of 30 per cent for the year. Net profits, measure goes only half way, however, to according to the preliminary profits statement, restoration of the full pre-war practice, since were £187,000 against £263,000 previously, but “ carry-over ” facilities from one account to the figures are stated before the impact of taxes. another remain barred. Although, therefore, At 38s. the 5s. shares pay 4 per cent on the buyers at the start of an account will have a money, allowing for the dividend in the price. fortnight’s grace before they are liable to pay Profits of Joseph Lucas during the year of transfer stamp charges, cash will still be required reconversion ended last August show an on Settlement Day. 20, 1946 uecember E l e c t r i c a l R e v ie w 55
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:'5a ïTna December 20, 1946 E l e c t r i c a l R e v i e w 1037 Current Transformer Testing1 A Simple Null Method
"■■ETHODS of testing current trans- medium- and low-grade accuracy, in normal ■IT-B- formers for ratio and phase errors fall and overload conditions, since for such into three main classes: First, absolute transformers it is legitimate to assume that methods in which voltage drops in standard secondary leakage reactance is negligible. resistances included in prim ary and secondary The arrangement of the testing circuit is circuits are compared; second, comparison shown in the accompanying figure. B is the methods in which a substandard transformer external burden of the transformer for which is used; and third, indirect methods the errors are required and R is a resistance which depend upon the measurement of equal to the resistance of the secondary exciting current under stipulated conditions. winding. B and R in series are joined to The fundamental drawback the source of supply in series of the absolute methods is that By G. W. Stubbings, with an ammeter A1; a watt the inclusion of a standard 8 .Sc., A.M.I.E.E. meter W1; and a regulating resistance in the secondary rheostat. The secondary circuit alters the burden of the transformer winding of the test transformer CT in series so that the total effective burden is not under with the current coil of a H-A wattmeter W 2 complete control. Comparison methods are is connected in parallel with B and R as convenient and accurate if a substandard shown. The core of CT is overwound with transformer of the same ratio as the test a temporary winding of a known number of transformer is available. Indirect methods turns, and this winding is connected to the depending upon the measurement of exciting output terminals of a phase-shifting trans current are most flexible in their application. former PST in series with an ammeter A2, a No heavy-current circuit is required, «and switch S, and a regulating rheostat. The these methods are, in a sense, absolute in voltage circuits of wattmeters W , and W 2 are that no comparison transformer is used. Further, by the measurement of ex citing current, the performance of a trans former can often readily be investigated for currents consider ably in excess of the full-load value. The drawbacks of the indirect methods are tw ofold; first, the ratio error arrived at by tests of this class is the fractional differ ence of the actual and Details of testing circuit the turns ratio, so that, if the turns and nominal ratios are not connected to the output terminals of PST. identical the amount of turns compensation The test procedure is as follows. W ith the must be known; secondly, the methods are switch S open, the current for the testing suitable only for transformers with no supply through A x is adjusted to the value secondary leakage reactance. Notwithstand corresponding to the load for which the ing these disadvantages, the indirect methods errors are required. The voltage drop in are often very useful, and the test described B and R is then equal to the secondary e.m.f. hereunder, which requires ordinary apparatus of the transformer with a primary current only, is a convenient one for investigating the corresponding to the current in Aj and with performance of ring-type transformers of a total secondary impedance corresponding 1038 E l e c t r i c a l R e v ie w December 20, 1946
to the combined impedance of B and R. in B and R. The impedance of the current The current passing into the secondary of coil of W2, which tends to reduce the current the transformer through the current coil of passing into the secondary of CT with S open, W 2 in this condition will therefore be approxi is therefore immaterial. mately equal to the exciting current of the The kind of sensitivity obtainable by this transformer for a primary current correspond method can be illustrated by a numerical ing to the current in Ax and the total burden example. Suppose that the ratio of CT is corresponding to B and R in series. 400/5 and that the errors of ratio and phase With the primary of PST energized, its at one tenth of full-load current are of the rotor is set so that Wj. reads zero. This o rder o f 2 per cent, so that the exciting voltage is then in phase quadrature with the current is of the order of 3 per cent of the current and the movable pointer is set to secondary current. If W 2 has a current 90 on the degree scale. The rotor of PST is range o f i A, the current passing into it with then set so that the wattmeter W 2 reads zero, S open, will if the voltage of PST corresponds and, the reading of the pointer on the degree to the wattmeter range, be about 3 per cent scale being noted, the rotor is turned through of full-scale value. Although the reading of exactly 90 deg. The output voltage of PST W 2 will not correspond accurately to the is then in phase with the current passing exciting current and will be too small to be through W 2 into the secondary winding of CT. read with precision, it will be sufficiently The switch S is then closed, and the large for the zero adjustment to be made current from PST into the temporary winding with fair nicety. The sensitivity of W 2 as a is gradually increased. This current, as the null indicator will, of course, increase pro output circuit of PST is practically non- portionately to the increase of current from inductive, will be either in phase or in phase the testing supply. The number of turns in opposition with respect to the current in W 2, the temporary winding of CT can be made to so that, provided that the polarity of the suit the ratio and the range of A2. Thus, if voltage of PST is correct, an increase of this winding comprises 20 turns, the current current in A 2 will decrease the reading of W 2 in A 2 for the test at one-tenth of full load and, when W 2 reads zero, the m.m.f. of the will be about 3 per cent of 20 or 0-6 A. current in A 2 will be equal to that of the current originally passing through the current coil o f W 2 with S open. The observed Lighting in Industry current in A 2 multiplied by the ratio of tWtHIS month’s meeting of the Birmingham temporary primary to secondary turns is Centre of the Illuminating Engineering thus equal to the exciting current which Society considered whether the I.E.S. Code corresponds to the current in Aj and to the could profitably be applied in industry. total burden represented by B and R. Mr. R. O. Ackerley, speaking in favour of Further, the angle of phase difference of this the motion, said the code was arbitrary and exciting current and the current in Ax will there were many reasons for providing higher be indicated by the reading of the movable or lower values of illumination than those stated, though he could not see how any one pointer of PST of the angle scale. of the clauses relating to quality could not If Ie is the value of the exciting current profitably be applied. The code was intended calculated from the reading of A 2, 8 the angle primarily for those versed in lighting and its reading of PST and I the current in A1( then function as it stood was to guide the illuminating the percentage difference of the actual and engineer; but it was also a guide to the pur Ie chaser, as it gave him a standard to apply. the turns ratio of CT will be 100 x -j-cos0 Controlled tests had shown that the code could be and had been profitably applied. and the phase error in centiradians will be Mr. W. G. Markwick, taking the opposite Ie view, agreed that there were benefits to be 100 X -ysinfl. If in the above procedure derived from the application of the code, but to the polarity of PST is incorrect after its final what section of industry ? The owner who had adjustment, so that the reading of W 2 cannot to foot the bill wanted to know what he would be reduced to zero, it is necessary merely to get out of it and production was not so great now as when lighting installations were poorer, turn the rotor through exactly 180 deg. though he agreed that there were other causes W hen W 2 reads zero and carries no current, to account for the fall in production. the drop in its current coil is zero, so that the After considerable discussion, Mr. Mackenzie e.m.f. induced in the secondary of CT by the summed up and a vote showed an overwhelming current from PST is exactly equal to the drop majority in favour. December 20, ¡946 Electrical Review 10.19 Increasing Production Success of Bonus Scheme at a Twickenham Switch Factory
A MONG a number of devices introduced by All the components are made on the premises, Arcolectric (Switches), Ltd., to step up as well as all the tools. Ten presses cater for production at its works at Twickenham is a the large quantities of bakelite mouldings scheme of bonuses for its employees which has required, a rotary trimming machine being used met with exceptional success. Two types of bonus to remove the flash and do the rough polishing. are given, a weekly one based on production The pushes, etc., are trimmed on lathes. Power and an annual profit-sharing bonus. Under the presses produce all the brass stampings required, weekly scheme every process is timed and a such items as contact blocks being made by standard basic output figure fixed. Points are high-speed automatic machines. Assembly of then given for every minute worked over 30 in the contacts for the table lamp switches is the hourly average at the rate of 6d. per point. carried out by means of apparatus which swages An operator therefore can, and frequently does and forms them on to blocks in one operation, earn up to 15s. a week above the standard wage. Under the profit-sharing scheme, which is based on both efficiency and regular atten dance, it is possible for an employee to receive the maximum equivalent of ten weeks’ wages. The latter scheme particularly has a very good effect in reducing absenteeism after a “ good w eek.” The average paid out under the weekly scheme amounts to about £40 per week, and under the profit- sharing scheme £2,000 per annum. Mr. N. H. David son, progress manager, tells us that before the weekly scheme was introduced the average number of minutes worked per hour was only about 40: now it is over 50. Absenteeism has fallen by 8i per cent. Motion study and the use of conveyors have also helped to improve output and, with the manufacture of peace time articles now getting into full swing, it is expected that 10,000 switches a day will Final assembly conveyor. Note the arms on the edge diverting soon be coming off the pro articles to operators along the line duction lines—a remarkable performance from about 80-100 employees in a each machine being capable of turning out small factory of only about 6,000 sq ft floor area. 3,000 a day. Grooves for the screw fixing are At present, production is being concentrated drilled at the rate of ten a minute on other almost entirely on push-button switches tor machines, while the holes for the screw assembly incorporation in the bases of table lamps, but are tapped at the rate of 7,000-8,000 a day. other products include vacuum switches for Similar high-speed methods are used for the staircase lighting, etc., b.c. batten lampholders assembly of the blocks and the formation of the for illuminated signs (not much in demand here necks. at the moment, owing to the lighting restrictions, On the final assembly belt a novel device is but finding a ready market abroad), suspension used to pass partly-finished articles down the and toggle switches, signal or pilot lampholders, line. For instance, after the long and short test prods, pointer knobs, and turntables. contacts and ratchet have been inserted in the 1040 E l e c t r i c a l R e v i e w D ecem ber 20, 1946 moulding the assembly is placed on the edge 1,000 and 1,300 switches a day can be handled of the conveyor to be caught by a metal arm by each one of these jigs. After completion of which protrudes over the edge of the conveyor the assembly the switches are placed on the and diverts it to another operator farther down centre of the conveyor and carried to the end the line Here it is placed, together with the of the belt for final test and inspection and top moulding, spring, pawl and push, in a neat boxing. They are then placed on an overhead jig arranged so that a light goes on when the conveyor which carries them to the Stores and assembly is correctly undertaken. Between Dispatch Department.
Municipal Report« Bolton.—The accounts of the Electricity similar equipment were in hand. As far as Department (borough electrical engineer, Mr. large-scale electric cooking was concerned, H. E. Annett) show a total income of £573,672 development was seriously retarded by the (against £557,558 in 1944-45), with working restricted supply of equipment, but three large expenses of £499,069 (£477,233). After meeting cookers were connected as well as four hot- loan charges, etc., there was a net profit of cupboards and a considerable number of large £43,230 (£38,250), of which £7,898 (£1,519) kitchen-aid equipments. In order to establish has been utilized for capital expenditure items, the degree of saturation which has been reached £6,000 (same) is transferred to the reserve fund in domestic electrical apparatus, the Department and £10,000 is again applied in aid of the rates. is co-operating with E.D.A. in carrying out a Sales, at 132-5 million kWh, were approximately survey of the area. the same as in the previous year, a rise of 6-4 Altogether 213-6 million kW h was sold during million kWh under the combined light, heating the year, a reduction of 2-9 million on the and power tariff compensating for the reduced previous year; industrial supplies decreased by industrial power requirements. The cost per 12-1 million kWh, while consumption under kWh sold was 0-973d. (0• 931 d.) and the price domestic (special rates) rose by 9-7 million obtained averaged 103d. (1-Old.). kWh. Revenue aggregated £1,158,047 (against Bromley.—The wartime reduction of sales £1,097,178), equivalent to 1 -301 d. (l-216d.) per was fully recovered last year when an increase kWh sold, and running costs, £938,543 of nearly 18 per cent brought the total to 22-3 (£862,003), averaged l-054d. (0-955d.). After million kWh compared with 20-3 million in meeting debt charges and income tax, £179,117 1938-39. The report of the borough electrical (£243,906), there was a net profit of £40,387 engineer (Mr. W. G. Trend) indicates that sales against a deficit of £8,731 in 1944-45. During under the domestic “ all in ” tariff, which rose the year progress was made with the extension by 2-9 million kWh, now account for some 60 of the Valley power station. per cent of the total. Total revenue last year Mansfield.—The Electricity Department (chief amounted to £165,783 (against £146,281 in electrical engineer and manager, Mr. A. 1944-45), while working costs were £131,066 Latham) sold 18-6 million kWh in the year (£109,599), the financial result after the payment ended March 31st last, an increase of 6 per of all charges being a deficit of £7,206, compared cent on the previous year. Income increased with the previous year’s loss of £6,982. Total by £6,337 to £116,708 while working expenses costs per kWh were l-80d. (l-86d.), revenue rose by £11,346 to £96,085. Apart from the averaging l-64d. (l-72d.). higher bulk supply charges, a revision of the Bradford.—Surveying the undertaking’s pro proportion of costs borne by the undertaking gress during the past year in his annual report, for the services rendered by the Town Clerk’s the electrical engineer and manager (Mr. T. H. and Borough Treasurer’s Departments resulted Carr) states that industrial inquiries for addi in an increase from £1,322 to £3,600. The net tional supplies are increasing in number and result of the year’s working was a deficit of there is evidence of a general desire to adopt £2,898, the first for many years. public supply. Development in this field was Shoreditch.—The accounts of the undertaking hampered by the difficulty of obtaining motors, for 1945-46 record a revenue of £220,012 and a the manufacturers requiring twelve to twenty- gross surplus of £25,265, there being a net profit four months for delivery. Of the 1,295 addi of £1,910 after providing for loan charges and tional consumers connected, 1,015 were £3,500 for war damage insurance. A total of domestic, and consumers in this class, excluding 29-2 million kWh was sold at an average price those occupying house and shop premises, now of l-783d., compared with 27-1 million kWh at number 66,454 out of a total of 77,676. Their l-742d. in 1944-45. The maximum supply average consumption was 1,105 kWh compared demanded was 14,960 kW (12,650 kW) and the with 988 kWh in the previous year. Com load factor fell from 27-41 to 25-72 per cent. mercially, there was a considerable demand for Since the close of the financial year Mr. R. H. baking and cooking equipment and 22 baking Rawll has succeeded to the position of borough ovens with an aggregate load of about 240 kW electrical engineer and manager on the retire were connected, while a further 20 orders for ment of Mr. P. C. Ebner. , D ecem ber 20 1946 E l e c t r i c a l R e v i e w 1041 Training: Supervisors; The “ T.W.I.” System
OSTERED by the War By “ Cincinnatus ” and explain each step clearly. Manpower Commission After this, the supervisors dis in the U.S.A. from 1940 onwards, the new cussed the demonstration and how it could method of training supervisors known as be applied to their individual factory in training within industry gave such good results struction problems. that the Ministry of Labour sent an The second part of T.W .I., job methods, investigator to America to study the system uses the discussion group system in a similar and in September, 1944, the Ministry began way. About a dozen foremen and a trainer to develop a similar service for firms in this or leader meet for five sessions of two hours c o u n try . each, the leader illustrating the technique by T.W.I. consists essentially of three main demonstrating a specific process. His object training functions for supervisors; job is to persuade them to find a fresh outlook instruction, job methods and job relations. on their work and the way it is done. The first is the technique of passing on experience effectively/ the supervisor has Four-Step Analytical Method to learn how to instruct. The second is The leader first of all demonstrates by the analysis of how a job is done in order to showing how a process in the factory was find out how it may be improved. The formerly carried out. Each step is explained third is the leadership and handling of people and demonstrated, showing how the work of in their jobs and their relations with other materials handling, machine operations and people. These three skills are taught in a hand labour is needed. He then takes the group-study course of five two-hour sessions same process and goes through it in the each and are co-ordinated into a unified same way, adopting the new method arrived system of working efficiently. at after making a “ job methods ” analysis. The resultant simplification, and savings in Job Instruction materials, in machine time and man-hours are In the U.S.A., the key to job instruction shown. He next explains the analytical was found in the group discussions directed method which has produced the new way of along definite lines. They were organized doing the job. Four steps are outlined :— in the factory conference room or similar (1) Break down the process into its parts, meeting place in an informal manner, the listing all the details exactly as done. supervisors under instruction sitting around (2) Consider each part critically and a table. The trainer demonstrated the study it in a detached way. This means in inadequacy of simply telling someone how practice asking elementary questions about to do a job. A simple operation was taken what is going on. “ What is the purpose of and one of the supervisors present had to this part—this action—this arrangement ? ” attempt it after a bare statement of how it “ Why is it necessary ? ” “ Is this the best should be done. He found that he could method of doing it ? ” “ If not, can you not grasp the whole sequence of movements think of a better method ? ” And, “ When and he failed. The trainer then showed the and where should this be done and who is inadequacy of simply showing how to do a best qualified to do it ? ” job. Another supervisor attempted the (3) After this analysis there follows the operation in an effort to imitate the trainer. building up of a new method. This means This was a failure again. The trainer quoted examination of the process as revealed in the saying “ If the worker has not learned, its parts and their sequence, elimination of the instructor has not taught." unnecessary details, simplification of the The next step was to take a simple opera job to reduce the number of things done, tion and to conduct a member of the group and the rearrangement of the process into right through it, explaining each move and a more easily operated grouping. For this making him use both his hands and his part of the work to be thorough, all the key mind until he had mastered the whole workers connected ‘with the job should be process. When he could do this properly, called in and asked to make their own he had to demonstrate back to the trainer comments and suggestions about the way 1042 E l e c t r i c a l R e v i e w December 20, 1946
they think the job should be carried out— of a card. On one side was the heading, about the use of jigs and fixtures, the sequence “ How to handle a problem.” It gave four of operations, the supply of materials and steps: “ Get the facts; weigh and decide; parts, the machines best fitted to do the take action; and check results.” Under job, etc. The new process ought to be the the first section were: “ Review the record, creation of the men who have to do it, find out what rules and plant customs apply, guided by the men who take the responsibility talk with individuals concerned, get opinions for its effective use. and feelings, and be sure you have the whole (4) Having redesigned and replanned thestory.” Under the next section came, job, the work is not really complete until “ Fit the facts together, consider their the stage has been reached at which all the bearing on each other, etc.,” down to “ Don’t workers who are to carry out the job in the jump at conclusions.” The remaining two new way—and those who have the task of sections were similarly analysed. supervising the new method—have been With the aid of this textbook, super “ sold ” the whole idea. This saves possible visors were taken through one current psychological difficulties later on. It is problem after another. They tried to solve equally necessary to secure the approval of each other’s everyday difficulties of dealing those in the factory who will have to deal with people and they learned a lot in this with the new method’s effects on materials, process because they had to follow a logical quality and costs, on safety and on quantity series of steps and stick to the points at production. Again, the effects on piece issu e. rates and earnings are important matters to examine and make clear so that agreement Results of Training is reached before applying the new method. The instruction card had printed on its When the method has been approved full other side a few notes, “ Foundations for credit should be given to those who have good relations,” outlined under four head helped to design and construct it. ings : “ Let each worker know how he is The series of four steps outlined is used getting on, give credit when due, tell people by the leader of the supervisors’ training in advance about changes that will affect group to show how to deal with their own them, and make use of each person’s ability.” problems, and the essential feature of this After a course of applying their experience kind of instruction is this application. The and thought in this way, supervisors became leader asks each supervisor to bring to the more effective because they had been analys discussion group a curient process or methods ing their experience and using it according to problem which is giving him trouble in his common-sense, psychological principles. They own shop. The whole group then goes had been taught to put themselves in the through the four-step method to find a place of the man they were supervising; to solution to this problem. The supervisors look below the surface for the real cause of deal with each other’s troubles in a logical, his discontent or inefficiency; to treat each co-ordinated process of thinking. man as an individual. The discussion group has proved its value Job Relations in training. It is clear, however, that The third section of T.W .I. is job relat'ons, management must give its full support to probably the most important and most this system if the best results are to be difficult to teach. It is not easy to estimate obtained. At the present time, the Ministry losses in production arising from the failure of Labour is furthering T.W.I. through a of supervisors to deal wisely with human special branch, the Training Department, relations. A new approach was decided on T.W .I. for Supervisors, Ebury Bridge House, by the U.S. War Manpower Commission— Ebury Bridge Road, London, S.W.l, and job relations training was to provide training it has issued two pamphlets on the system. for this skill, the skill of leading, of working The work has been running for about two with people, of getting results through years and more than 30,000 people have people. Another set of five two-hour already received T.W.I. group training. discussion groups was planned, to which In the United States more than one and a supervisors brought their problems of human half million people received the training. relations, The procedure for dealing with The verdicts of both countries are con these problems was outlined simply and the sistently favourable to this practical approach leader provided a “ textbook ” consisting to the chief problem s of industrial supervision. CONTRACT INFORMATION Accepted Tenders and Prospective Electrical Work
Contracts Open Manchester.—Electricity Committee. Ac cepted. Cables, Stuart Street power station and W here “ Contracts Open ” are advertised in our High Street substation.—Standard Telephones " Official Notices ” section the date of the issue & Cables; Connollys (Blackley); Mersey is given in parentheses. Cable Works. Street lighting standards for Exeter.—December 30th. Electricity Depart twelve months.—Stewart & Lloyds. ment. Two 12,000-kVA transformers. (Decem b er 6th.) Mansfield. — Electricity Committee. Ac cepted. Transformers.—Electric Construction Hastings.—January 13th. Electricity Depart C o.; Brush Electrical Engineering Co.; Ferranti. ment. Two 2,000-kVA Scott-connected trans formers and two switch kiosks. (December 6th.) Wallasey.—Works Committee. Accepted. Power installation at Mill Lane depot (£142).— Isle of Ely.—January 4th. County Council. R. J. Chatham. Installation of electric lighting at the Orchards Electricity Committee. Accepted. Under Nursery, Wisbech. R. D. Robson, county ground disconnecting boxes (£804).—W. Lucy architect, County Hall, March. & C o. London.—Metropolitan Water Board. New West Hartlepool.—Town Council. Accepted. or second-hand alternators, three-phase, Steel street lighting columns.— Revo Electric Co. 400/440V, for coupling to Diesel engines running at 600 r.p.m. (eighteen approximately 200 kW and six approximately 300 kW). Contracts in Prospect (December 13 th.) Particulars o f new works and building schemes for Manchester.—January 13th. Electricity Com the use o f electrical installation contractors and mittee. 6-6-kV substation switchgear. (Decem traders. Publication in this section is no guarantee b er 6th.) that electrical work is definitely included. Alleged Newark-on-Trent.—January 16th. Borough inaccuracies should be reported to the Editors. Council. P.i. and armoured cable. (December Ashington (Northumberland). — Factory for 13th.) G. I. Colpitt & Sons; J. Huntley & Sons, Newport (Mon.).—December 31st. Corpora Marion Street, Sunderland. tion. Electrical installations in 134 houses, Aspatria (Cumberland).—Factory for Hackney Alway Farm estate. (December 6th.) and Co.; E. Taylor and Co., Ltd., builders, North Scotland.—January 20th. Hydro- Littleborough, Lancashire. Electric Board. High- and low-voltage distribu Aycliffe (Durham).—Factory for Block & tion lines (wood poles) on the island of Arran. Anderson, Ltd.; Cordingley & McIntyre, The (D ecem b er 13 th .) College, Durham City. Rhondda.—December 28th. Urban District Barrow-in-Furness.— Factory for Lister & Co., Council. Six 300-kVA three-phase oil-immersed Manningham Mills, Bradford. static transformers, 11,000/415/240 V. (Decem Birkenhead.—Houses (257), Woodchurch es ber 13th.) tate (£358,294); Lloyd & Cross, Ltd. St. Faith’s and Avlsham.—December 28th. Blackpool.—Houses (60), Collins Avenue; Rural District Council. Electrically operated R. Fielding & Son, builders, Stanhope Road. pumping and pressure distribution plant for seven sites. W. Herbert Bateman & Partners. Bradford.—Extensions to works; J. Newbould Halifax House. Bank Plain, Norwich. & Son, Ltd., Dick Lane. Carlisle.—Dining room and kitchen at Stanwix Orders Placed School; A. Blakely & Sons. Caterham.—Houses, and flats, Crewes Lane Barrow-in-Furness.—Electricity Committee. (£20,930); P. E. Good, 34, Church Road, Accepted. Lighting columns (200) and lanterns. Warlingham. —G.E.C. Standard service units (500).—British Insulated Callender’s Cables. Transformers.— Chadwell Heath.—Extensions to factory for British Electric Transformer Co. Lewis Berger & Sons. Birkenhead.—Electricity Committee. Ac Cheadle.—Factory for British Hard Rubber cepted. Switch unit (£309).— A. Reyrolle & Co. Co. Liverpool.—Electric Power & Lighting Com Cleator (Cumberland).—Factory for the Cum mittee. Recommended. 33-V cable, together berland Paper Co., Ltd.; John Laing and Sons, with pilot and telephone cables, between builders, Carlisle. Clarence Dock power station and substations Colwyn Bay.—Houses (50), Mochdre; N. S. (£260,878).— British Insulated Callender’s Cables. Jeffery, borough engineer, Town Hall. 1044 E l e c t r i c a l R e v i e w D ecem ber 20 , 1946
Connah’s Quay.—Permanent houses (94), for Newry (Co. Down).—Textile factory for U.D.C. (£105,750); Shones (Buckley), Ltd., Horrockses Crewdson & Co., Ltd. contractors. Church Road, Buckley, Chester. Northumberland.—Five schools (£250,000) ; Dartford.—Additions to County Hospital, for county architect. County Hall, Newcastle-on- Kent C .C .; county architect, Springfield, Maid T y n e. sto n e. North Shields.—Houses (50) for Tynemouth Devonshire.—Kitchens and dining rooms at Town Council; J. White (Contractors), Ltd., schools at Broadclyst, Crediton, Newton Abbot Dunston-on-Tyne. and Plympton; H. V. de Courcy Hague, Oldham.—Police houses (£24,000); A. L. county architect, 97, Heavitree Road, Exeter. Hobson, borough engineer, 75, Union Street. Doncaster.—Works, Milethorn Lane, for Ormskirk.—Primary school; G. Noel Hill, Briggs Motor Bodies, Ltd.; Howard Crane, county architect, Preston. architect, 7, Buckingham Gate, London, W .l. Orrell.—Houses (36), Moor Road site Driffield.—Houses (64), in several parishes; (£41,728) for U.D.C.; G. Halliwell, builder, F. Vaux, architect to R.D.C., Danesmoor M o o r R o ad . Chambers, 31, Quay Road, Bridlington. Penryn.—Houses (51), Tremough estate East Barnet.—Houses (76), Linthorpe Road, (£63,715); John Williams and Co. (Cornwall), Bevan estate, for U.D.C.; New Ideal Home Ltd., builders, South Street, St. Austell. steads, Ltd., Station Approach, Sidcup. St. Pancras.—Flats (72), Torriano Avenue Eccles.—Houses (20), Clandon Avenue, Peel (£142,308); F. Troy & Co., Ltd. Green; S. Crompton, builder, 744, Liverpool Flats (126), St. Pancras Way (£189,763); Road, Peel Green. Henry Neal, Ltd. Edinburgh.—Reconstruction (after fire), of Stockport.—Houses (34), Dial Park Road Theatre Royal; Edinburgh Varieties, Ltd., 50, and Mazda Road; T. Fryer & Co., builders, Melville Street. Garden Street. Enfield.—Houses (214), Bullsmoor estate Central bus station, Daw Bank and Chester- (£243,829), for U .D .C.; T. H. Houslip and Co., gate, and branch library, Stockport Road, Ltd., building contractors, 8a, Galliard Road, Cheadle Heath; W. F. Gardner, borough London, N.9. su rv ey o r. Feltham.—Crematorium for S.W. Middlesex Stourport-on-Severn.—New ante-natal ward at Crematorium Board; Denman & Sons, archi Lucy Baldwin Maternity Hospital, for Wor tects, Brighton. cestershire C.C.; Martin, Martin and W. H. Ward, architects, 106, Colmore Row, Birming Garforth.—Dwellings (52), Westfield estate, h am . Allerton Bywater (£63,367), for U.D.C.; F. & C. Leach, Ltd., builders, Park Lane, Pontefract. Sunderland.—Nursery schools at Springwell Farm, Thorney Close and Hill View, and Hamilton.—Factory for making aluminium kitchens and dining rooms at Havelock Junior, frames for McLean’s Windows, Ltd., Glasgow; Barnes, and Hendon Schools; C. A. Murray, m a n a g er. education architect, John Street. Henley-on-Thames.—Permanent houses (166), Swinton.—Houses (110), Highfield Farm Greys Road North estate; T. L. G. Jefferies, estate; H. Goodwin, U.D.C. surveyor. borough surveyor, 33, Market Place. Thorne.—Permanent houses (40), and bunga Huyton.—New court room, magistrates room lows (18), Brickyard Lane, for R.D.C.; W. and police station, Stockbridge Lane; A. T. Firth, Ltd., builders, Armthorpe Road, Arm- Nicholson, county architect, Fishergate Hill, thorpe, Doncaster. P resto n . Wakefield.—Factory in Smyth Street for Close Kilsyth.—Completion of new secondary school Asbestos & Rubber Co., Ltd., 5a, Cheapside. (£100,000); county architect, Viewforth, Stirling. Wallasey.—Houses (159), Council estate Leigh.—Houses (186), and flats (48), Wigan (£182,155); Wm. Thornton & Sons, Ltd., Road; Nel Pan Lane site; borough surveyor. L iv erp o o l. Louth.—Houses (40), Eastfield Road; J. C. Wallsend.—Erection of factories on 20-acre Barber, borough engineer, Town Hall. site south of the Coast Road; Board of Trade, Macclesfield.—Houses (30), Ivy Road; Forbes Clarendon House, Clayton Street, Newcastle- Building & Construction Co., Ltd., Stockport. on -T y n e. Mountain Ash.—Temporary houses (154), Warlingham.—Flats (24), Blanchmans estate Buarth Capel site; U.D.C. surveyor, Town Hall. (£21,700); Walter Smith & Partners, 552, Newcastle-on-Tyne.—Flats (24), Westbourne Limpsfield Road. Avenue; city architect, 18, Cloth Market. Whitehaven.— Factory for Ennerdale and C o.; Factory on the Coast Road for Wills & Co., John Laing and Sons, Ltd., builders, Carlisle. tobacco manufacturers, Bristol; Sir Robert Factory for the Romney Perambulator Co., McAlpine & Son, Ltd., Carliol House. Ltd.; Border Engineering Co., builders. Ms^iemoer J ) . 1 9 4 6 E l e c t r i c R e v ie w
> 1 F X \ JL S
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£. 22 unsurpassed for K ü S INSTRUMENT TRANSFORMERS METERING DEVICES ¡gg. £2- PROTECTIVE RELAYS s j i MAGNETIC SHIELDS INDICATING INSTRUMENTS
Close technical control of production is an ootstandiiK feature in the mamifae- tnre of >1L METAL The iltc^tratkgi shows factory testms of a batch of M l >ltlA L cores. Onr technical experts »■31 be pleased to diseoss the application <3 M O CTA L to yonr particular re- cpnranfDti.
59 ; CIASSIFIE» ADVERTISEMENTS ADVERTISEMENTS for insertion in the following REPLIES TO advertisements published under a [ nc*ay s issue are accepted up to First Post on Box Number if not to be delivered to any particular Monday, and should be addressed ro Classified Advertisement Department, Dorset House, Stamford firm or individual should be accompanied by instruc Street, London, S.E.l. (SeeN otice below for C hr istmas. ) tions to this effect, addressed to the Manager of the THE CHARGE for advertisements in this section ELECTRICAL REVIEW. Letters of applicants in is 2/d per line (approx. 7 words) per insertion . ONLY such cases cannot be returned to them. The name OFFICIAL AND GOVERNMENT ANNOUNCE of an advertiser using a Box Number will not be MENTS CAN NOW BE DISPLAYED:— 35/- per disclosed. All replies to Box Numbers should be inch. Where the advertisement includes a Box Number this counts as six words and there is an addressed to the Box Number in the advertisement, additional charge of 6d. for postage of replies. c/o ELECTRICAL REVIEW, Dorset House, Stam SITUATIONS WANTED. — Three insertions ford Street, London, S.E.l. Cheques and Postal under this heading can be obtained for the price of Orders should be made payable to ELECTRICAL two if ordered and prepaid with the first insertion. REVIEW LTD. and crossed, Original testimonials should not be sent with anolicntions tor emolovment.
CHRISTMAS SCHEDULE Please a d d r e s s CLASSIFIED ADVERTISEMENTS your envelope . . O u r issue of December 27 has closed CLASSIFIED for press. ADVERTISEMENT DEPT.
OFFICIAL NOTICES , TENDERS. ETC. COUNTY BOROUGH OF WALSALL ELECTRICITY SUPPLY DEPARTMENT ELECTRICITY (SUPPLY) ACT, 1926 A PPLICATIONS are invited for the following appoint- North-West England and North Wales Electricity ments at salaries and conditions in accordance with (Alteration and Extension) Scheme, 1946 the National Joint Board Schedule (the undertaking is at present in Class G. but it is likely that it will move to Class H in the near future). T\7'HEREAS the Electricity Commissioners have pre- (a) METER ENGINEER. Grade 7 (at present £494 pared and transmitted to the Central Electricity per annum). Candidates must have had a sound technical Board a scheme bearing the above title, and hereinafter training and have gained the National Higher Certificate referred to as “ the new scheme," for altering and extend or equivalent qualification, with experience in a type A ing the North-West England and North Wales Electricity polyphase meter testing station, including organisation Schemes, 1928 to 1944, by determining th a t four new and records and knowledge of the requirements of the generating stations, if and when duly authorised, will Electricity Supply (Meters) Act. 1936, together with prac become selected stations for the purposes of the Central tical experience in the repairing, testing, certification and Electricity Board. installation of all types of meters, and inspection, testing Notice is hereby given that the Central Electricity Board and connecting of consumers' installations. have caused the new scheme to be published and that (b) ASSISTANT CONSUMERS’ ENGINEER. Grade 6 any authorised undertakers or other persons interested in (at present £545 per annum). Candidates must have had the new scheme and desiring to make representations a sound technical training and have gained the National thereon may do so by forwarding the same by registered Higher Certificate or equivalent qualification. They must letter to the undersigned, and posted not later than the have had practical experience of installation contract 18th day of January. 1947. Copies of the new scheme work and be competent to advise consumers on industrial with an explanatory memorandum, which the Electricity power and other applications, and to prepare specifications Commissioners have sent to the Board therewith, may be and estimates for all classes of installations: with a good obtained at the price of one penny each from H.M. knowledge and experience of sales and development activi Stationery Office. York House. Kingsway .London, W.C.2. ties. including showrooms, and the installation and main Dated this 17th day of December. 1946. tenance of hired apparatus. O. (c) A. JUNIOR SHERRARD. MAINS DRAUGHTSMAN. Grade 9a (at Trafalgar Buildings, Secretary. present £343 per annum). Candidates must have had a 1, Charing Cross, London. S.W.l.______4^11 good general training in mains work, with experience in mains records and the preparation of drawings for mains SITUATIONS VACANT extensions and substations. Applications are also invited for the appointment of CITY AND ROYAL BURGH OF DUNDEE (d) SHOWROOM ASSISTANT (MALE). Candidates ELECTRICITY DEPARTMENT must have had a good general education and experience in showroom work, with a sound knowledge of electrical domestic apparatus and the installation and use of same. Appointment of Junior Charge Engineer Duties will include attending to consumers’ enquiries re supply and tariffs, window displays, etc. The salary for A PPLICATTONS are invited f
A PPLICATIONS are invited from Corporate Members Installation Engineer (Electrical Contracting) of the Institution of Electrical Engineers for the following appointments: — A PPLICATIONS are invited for the above position from (1) DEPUTY ELECTRICAL ENGINEER AND applicants who have had a sound training and con MANAGER. A sound training, wide experience and siderable practical experience in the electrical contracting progressive record in the technical development and industry. Applicants should be able to prepare estimates administration of large or medium-sized undertakings in and specifications for all classes of electrical installation the electricity supply industry is essential. The salary work, to supervise the carrying out of the work, and to will be in accordance with Grade 1. Class G. of the control staff. Experience of development work in the National Joint Board Schedule (at present £833). domestic, commercial and industrial applications of elec (2) SERVICE AND DEVELOPMENT ENGINEER. tricity would be an advantage. The applicant must have had a sound training and The salary will be in accordance with Class M, Grade 9a. experience in the sales and development section of a of the National Joint Board Schedule, commencing at medium or large electricity undertaking, and must be £478 per annum. capable of reorganising and expanding a domestic appa The appointment will be subject to the provisions of ratus repair workshop, of preparing reports on schemes the Local Government Superannuation Act. 1937. Appli for development, and of dealing efficiently with all matters cants must preferably be not more than 40 years of age. relating to a consumers' department. The salary will be or have had previous Local Authority service carrying in accordance with Grade 3. Class G, of the National Joint transfer value within the meaning of the Act. The selected Board Schedule (at present £681). applicant will be required to pass a medical examination. (3) TECHNICAL ASSISTANT. Candidates must have Applications, on forms to be obtained from the under had a thorough grounding in electrical technology, experi signed. are to be returned to me not later than Monday. ence in the preparation of distribution schemes, and must 6th January, 1947, accompanied by copies of not more be capable of dealing critically and statistically with all than three recent testimonials. Canvassing or any com matters relating to an electricity undertaking. The salary munication to a member of the Council, either directly or will be in accordance with Grade 5, Class G, of the indirectly, is prohibited and is a disqualification. National Joint Board Schedule (at present £573). JOHN R. STRUTHERS. In addition to the above three appointments there is Commercial Street, General Manager. also a fourth appointment set out below, for which the Sheffield. 1.______4043 applicant is not required to be a Corporate or a Graduate HIS MAJESTY’S COLONIAL SERVICE Member of the Institution of Electrical Engineers. (4) EX-SERVICE TR A IN EE. Training, principally in The Colonial Engineering Service the Distribution Section, for a period of two years is offered to a young ex-Service man, who has a sound basic knowledge of electrical engineering. The applicant will vacancy exists in the Nigerian Government Electricity be required to show that he intends and is reasonably A Undertakings for a Deputy Electrical Engineer-in- capable of passing, if he has not already done so, the Chief. Candidates must be Coroprate Members of the Graduateship Examination of the Institution of Electrical Institution of Electrical Engineers and have had a sound Engineers during or at the end of the two-year period. mechanical and electrical training, together with experience The salary payable will be in accordance with Grade 10. in the operation and management of a large municipal Class G (at present £312) and. subject to satisfactory or company-owned supply undertaking. Age preferably progress, will be increased during the second year to not less than 35 nor more than 40 years. The successful Grade 9a, Class G, of the National Joint Board Schedule candidate will be required to assist the Electrical Engineer- (at present £343). in-Chief in the operation and administration of the elec The successful candidates will be required to pass an tricity undertakings controlled by that officer, and in the examination by the Medical Officer of Health, and to preparation of plans, specifications and indents for new contribute to the Council’s Superannuation Scheme. Con electricity schemes. He will be required to assume the ditions of service, except those laid down in the National duties of Electrical Engineer-in-Chief as circumstances Joint Board Schedule, will be those included in the scheme may require. of the National Joint Council for Local Authorities’ The appointment will be on probation for permanent Administrative. Professional. Technical and Clerical and pensionable employment at a salary of £1.200 a year. Services. Candidates must disclose any relationship which Free furnished quarters are provided and free passages may exist between them and members of the Borough for the officer and, if married, for his wife on first appoint Council or its chief officers. ment and on leave. Home leave is usually permitted Applications, stating age, whether married or single, after not more than 18 months’ resident service and is and present appointment, together with full details of granted at the rate of 7 days for each month of resident training and experience, and accompanied by not more service. Income tax at Nigerian rates only. than three recent testimonials, must be sent to the under Those interested should write to the Director of Recruit signed not later than 31st December, 1946, the envelope ment (Colonial Service), 15, Victoria Street, London, being clearly marked with the designation of the post for S.W.l. stating age, professional qualifications and brief which application is being made. particulars of experience.______3996 R. W. STEEL. A.M.I.E.E., Engineer and Manager. CITY OF PETERBOROUGH ELECTRICITY DEPT. ______4021 PPLICATIONS are invited for the following appoint COUNTY BOROUGH OF HALIFAX A ments : — ELECTRICITY DEPARTMENT (a) ASSISTANT MAINS ENGINEER. Candidates should have had a sound training and some experience Appointment of Assistant Power Station Superintendent in the construction and maintenance of distribution net works. and in the layout of modern street lighting. Salary and conditions of employment will be in accordance with A PPLICATIONS are invited for the position of Assistant the N.J.B. Schedule, Class G. Grade 9a. viz., £343 to Power Station Superintendent at the Foundry Street £358 per annum. Power Station of the above Authority. The conditions (b) JUNIOR MAINS DRAUGHTSMAN. Candidates of employment are in accordance with the National Joint should have had experience in distribution drawing office, Board Agreement. Class G. Grade 5. at present £573 and be conversant with mains records and the design and rising to £604 per annum. layout of distribution networks. Salary and conditions Candidates must be experienced in the operation and of employment will be in accordance with the N.J.B. maintenance of a modern selected power station and have Schedule, Class G. Grade 10a, viz., £300 to £311 p.a. had a good engineering education. The appointment will The selected candidates for each appointment will be be subject to the provisions of the Local Government required to pass a medical examination and to contribute Superannuation Act, 1937, and the successful applicant to the Corporation’s Superannuation Scheme under the will be required to pass a medical examination. Local Government Superannuation Act. 1937. Applications, endorsed "Assistant Power Station Super Applications, endorsed (a) "Assistant Mains Engineer.” intendent,” stating age, training and experience, and and (b) "Junior Mains Draughtsman,” stating age, train accompanied by copies of not more than three recent ing, qualifications, giving details of experience, and accom testimonials, should reach the undersigned not later than panied by copies of two testimonials, should be forwarded 12 noon, Monday, the 30th December, 1946. Canvassing, to the City Electrical Engineer and Manager, Albert cither directly or indirectly, will disqualify. Meadow, Peterborough, not later than 30th December. A. G. CONNELL. M.I.E.E.. M.I.Mech.E., F.Inst.F.. l946- ARTHUR J. REEVES. Borough Electrical Engineer and Manager. Town Hall, Peterborough. Town Clerk. 19/23, Northgate, Halifax. 3946 7th December. 1946. 3977 ,,1U hLECTRICAL REVIEW 6 1
CITY OF CHICHESTER ELECTRICITY DEPT. BOROUGH OF SCUNTHORPE ELECTRICITY DEPT.
*or *he following positions: Appointment of Chief Technical Assistant 11 £ i ! i5 ASSISTANT. Appointed person will be attached to showroom statl and will be required to advise consumers (both in showroom and on consumers' A PPLICATIONS arp Invited for the above appointment premises) on the selection and use of electric apparatus, from Engineers who are Corporate Members of the tariff.-, tariff assessments, queried accounts, etc. Salary I.E.E. or who possess equivalent technical qualifications, in accordance with National Joint Council for Local and are not more than 15 years of age. Applicants should Authorities Staffs. General Division (at present £160 at have had a thorough training and experience in electricity -I years, rising to £300 at 30 years, plus cost-of-living supply, preferably with a Local Authority. They must bonus of £59 16s. per annum). Candidates should have be conversant with the design, construction, operation had previous experience in a similar capacity. Education and maintenance of 33-kV transmission. E.H.T., H.T. to School Certificate standard, and ability to drive car and L.T. distribution (overhead and underground systems) will be an advantage. and substations. (b) MAINS FOREMAN. Applicants must be experi The salary scale for the position will be that of Grade 3. enced in the erection, installation and maintenance of Class F. as prescribed by the National Joint Board for both E.H.T. and L.T. overhead lines and underground the Electricity Supply Industry, commencing at £640 mains. Appointed person must be capable of supervising per annum. The appointment will be subject to the the work of the jointers and the mains gang; a good Provisions of the Local Government Superannuation Act. disciplinarian and timekeeper, and able to drive car and 1937, terminable by one m onth’s notice on either side, light van. Wages and conditions in accordance with the and the successful candidate will be required to pass a * District Joint Industrial Council, Electricity Supply In medical examination. dustry (No. 11 Area. Zone 2). at present 29.88d. per hour. Further particulars, conditions attached to the appoint Applications, stating age, qualifications and experience, ment and form of application may be obtained from me accompanied by copies of recent testimonials, should be on receipt of a stamped addressed envelope. Applications, addressed to reach the undersigned not later than 31st which must be made on the official form, should be December. 1946. delivered to me. in envelopes marked ” Chief Technical E. H. SKINNER. A.M.I.E.E., Assistant.” not later than 10th January, 1947. Canvassing, 43. North St.. City Electrical Engineer and Manager. either directly or indirectly, will be a disqualification. Chichester. Sussex. ______3918 W. P. ERRINGTON. 34. High St.. Scunthorpe, Lincs. Town Clerk. SPALDING U.D.C. ELECTRICITY DEPARTMENT 9th December. 1946.______4044
Mains Recorder and Draughtsman FARNHAM GAS AND ELECTRICITY COMPANY ELECTRICITY DEPARTMENT riTHE Spalding Urban District Council Electricity Dept. -1- invites applications for the position of Mains Recorder Cable Jointer (Plumber) and Draughtsman. The appointment will be subject to the provisions of the Local Government Superannuation A PPLICATIONS are invited for the position of Cable Act. 1937, and the selected candidate, before appointment, Jointer in the above Department. Applicants must will be required to pass a medical examination. The have had a thorough training and experience in high and conditions of employment will be in accordance with the low tension jointing. N.J.B. Schedule. Grade 9a. Conditions of service and rates of pay will be in Applications, stating the applicant’s age. whether accordance with the Home Counties (No. 9 Area) Joint married or single, and giving full details of experience, Industrial Council. Present rate 2s. 4d. per hour for a previous appointments and qualifications, together with 47-hour week. Successful candidate will be required to copies of not more than three recent testimonials, should pass a medical examination. Some priority in housing be addressed to the undersigned, endorsed “ Mains may be given in the allocation of accommodation when Recorder and Draughtsman.” and delivered not later than available. Tuesday, 31st December. 1946. Applications, stating age. experience and accompanied FRAN K R . C. ROBERTS. by copies of testimonials in support of candidature, to be 9. Winsover Road. Engineer and Manager. submitted to the undersigned. Spalding. Lincs.______4048 W. H. EMERY. East Street. General Manager and Secretary. FIRST GARDEN CITY LIMITED Farnham. Surrey. 9th December. 1946.______4050 rpH E following vacancies are open: — SPALDING U.D.C. ELECTRICITY DEPARTMENT las (a) FITTER AND TURNER for general maintenance work, experience with Brush-Ljungstrom turbines de sirable. Assistant Meter Tester S» (b) FITTER for water-tube boiler and pump main tenance. experience with Babcock & Wilcox stoker-fired A PPLICATIONS are invited for the position in Meter [DEPT. units desirable. Test Room for testing and repairing single-phase, Rates of pay 2s. 4d. per hour for day work, plus extra 2-wire meters. im for superior ability and experience. D.J.I.C. rates. No. 7 Area. 2s. 2d. per hour. 47-hour (c) CONTROL ENGINEER, experienced with E.H.T. week. The appointment will be subject to the Local feeders and turbo-alternators, also D.C. rotary plant, rate Government Superannuation Act. 1937. and the success 2s. 7Jd. per hour for shift work. ful candidate will be required to undergo a medical eafî The above to be in accordance with J.I.C. (No. 9 Area) examination. ■¿te conditions ; subsistence allowances will be considered pend Applications to reach the undersigned before 31st ing permanent settlement in the district. Applications to December. 1946. the undersigned by 11th January. 1947. FRANK R. C. ROBERTS. W. A. BROWN. 9. Winsover Road. Engineer and Manager. [jaiiie Works Road. Electrical Engineer and Manager. Spalding. Lincs. ______4015 rjż- Letchworth. Herts. 4060 ELECTRICITY SUPPLY BOARD ©3? LEEDS COLLEGE OF TECHNOLOGY ieSJl (Principal : C. Chew, M.Sc.Tech., F.R.I.C.) Appointment of Lady Tracers HU ( Department of Electrical Engineering and Physics nHHE Electricity Supply Board invites applications for ntic the above positions. Applications will be considered A PPLICATIONS are invited for the post of full-time only from candidates who have had considerable experience Lecturer in Electrical Engineering, duties to com of tracing from draughtsmen’s drawings relating to wiring ftps' mence on 3rd February. 1947. or as soon as Possible after diagrams, structural steel work, power station, substation is® this date. Applicants should be suitably qualified and layouts, etc. «im* have had industrial and teaching experience. Salary Forms of application, and syllabus, may be obtained from the undersigned, with whom completed applications according to Burnham Scale. .Mtin . nni. i IK Particulars and form of application, to be returned not must be lodged not later than 31st December. 1946. ftS* later than two weeks after the appearance of this adver PATRICK J. DEMPSEY. tisement. may be obtained by sending a stamped addressed 60/62. Upper Mount St., Secretary. foolscap envelope to the Director of Education. Education Dublin. 9th December. 1946. 4041 Offices. Leeds. 1. 4016 6 2 E l e c t r i c a l r e v i e w December 20, 1946
WEST MIDLANDS JOINT ELECTRICITY BURGH OF LERWICK ELECTRICITY DEPT AUTHORITY i ol Overhead Linesman ¡»ft, o Vil Appointment of Relief Combustion Engineer, i) im Ironoridge ueneraung Station X^XPERIENCED Overhead Linesman required, one with underground jointing experience preferred but not tvfi essential. Wages and conditions of employment will be fTTHE above-named Authority have a vacancy for a in accordance with D.J.I.C. rates for No. 13 Area as a -A Relief Combustion Engineer at their Ironbridge minimum, but a higher rate may be paid depending on (Hi. » generating station, Shropshire, at a salary of £523 per qualifications. annum. Class K, Grade 8a, of the National Joint Board Applications should be sent to the undersigned, giving Schedule. full particulars of experience and enclosing copies of Candidates must be well versed in fuel technology and references. M L have had a thorough practical training in mechanical JAMES STEPHEN. v tíops engineering, together with a wide experience in the Electricity Works, Engineer and Manager. Ít¿Bc efficient operation of high-pressure boilers of large capacity, Lerwick. 4026 modern boiler house equipment, and instruments in major generating stations. Corporate membership of the Insti COUNTY BOROUGH OF DARLINGTON ojahrr tution of Mechanical Engineers and/or the Institution of ELECTRICITY DEPARTMENT » Electrical Engineers will be an advantage. v If? co The appointment will be subject to the Authority’s Assistant Mains Engineer Supeiannuation Scheme under the Local Government ißiäCB ffl Superannuation Act, 1937, and the selected candidate E20CÍ. will be required to pass a medical examination. A PPLICATIONS are invited for the above-mentioned Hitlol Applications, stating age, full particulars of training ■^A position at the salary in accordance with the National Joint Board Scale, Class G, Grade 8, plus car allowance. and experience, accompanied by copies of three recent J / f t a t a testimonials, should reach the undersigned not later than The appointment is subject to the selected candidate passing a medical examination. the 31st December, 1946. Canvassing, either directly or dips indirectly, will disqualify. Applications on a form to be obtained from the Borough H. F. CARPENTER. Electrical Engineer, Haughton Road, Darlington, should Phoenix Buildings, Clerk and Manager. be returned to him not later than noon, 3rd January, Dudley Road. Wolverhampton. 1947. endorsed “ Assistant Mains Engineer.______4008 U nrtdn 2nd December, 1946. 3912 33 U A British firm of telephone manufacturers in India has EEDOdlt BOROUGH OF BRENTFORD AND CHISWICK ■£A vacancies for Engineers capable of assisting in the '.jafeStre ELECTRICITY DEPARTMENT planning of automatic telephone exchange networks. Applicants should have some knowledge of the assessment ~ circuit of traffic data, area layouts, and the general technical Deputy Borough Electrical Engineer requirements of exchange networks. The position offers :kéli good prospects to young single men, good salary with kit rad&ii and travelling allowances, and usual leave. Write, giving ¿7 require PPLICATIONS are invited from suitably qualified full details of experience and age. to — Box No. 206. A and experienced persons for the post of Deputy Dorlands. 18/20. Regent Street, London, S.W.l. 3751 "œtmgj Borough Electrical Engineer at a salary in accordance A PPLICATIONS are invited for the position of Sales irinobüi with Grade 1. Class E, of the N.J.B. Schedule of Salaries, Clerk at a salary commencing at £315 per annum, at present £796 rising to £815 per annum. rising to £360 by three annual increments, plus bonus, at j p ü G H T Applicants must be Corporate Members of the Insti present fixed at £59 16s. per annum . Preference will be tution of Electrical Engineers, and have had a sound given to applicants who have had experience in stock 53td b? technical education and practical experience in the design keeping and recording all types of electrical goods sold in and operation of 6.6/11-kV and L.T. underground dis electricity showrooms. Applications, stating age, educa a l E r ie w . tribution networks with A.C. and D.C. substations. tion, details of experience, present position, etc., to be IMGHT Extensive sales development and commercial experience sent to the undersigned not later than Friday. 3rd January. with a progressive electricity undertaking is also essential. 1947. — A. W. Barham, Chief Engineer and General The appointment will be subject to the provisions of Manager, Electricity House, The Parade, Watford. 4014 the Local Government Superannuation Act. 1937, and K d aâÜf RMATURE Winders and Improvers required, A.C. M l 'In T the successful candidate will be required to pass a medical A and D.C., top rates, good working conditions.— examination and reside within the Borough. Electrical Power Repairs (Gillingham) Ltd., Strover Applications, stating age and experience, together with Street. Gillingham, K ent. 5065 Eiperieoc copies of not more than three recent testimonials, endorsed A RMATURE Winders and Improvers urgently required. r s c r d e a g “ Deputy Borough Electrical Engineer,” must be delivered -£A Top rates and good conditions.—Box 113, c/o The "‘5. to-Fei to the undersigned not later than Tuesday, 31st December. Electrical Review. 1946. Canvassing, directly or indirectly, will be deemed A RMATURE Winders and Improvers urgently required. a i m e d a disqualification, and candidates must declare any ■^A. Top rates and good conditions.—Collins Electrical relationship with members or officers of the Council of Ltd.. 22. St. Alban’s Place, London. N.I. 85 « to ?aitab which they are aware. A RMATURE Winders and Improvers wanted for general i!i-c 'o T h e A. E. JEANS.repair M.I.E.E., works. A.C. and D.C. Top rates.—Phillips & 197/199, Chiswick High Rd.. Borough Electrical Sons F.lectrical Ltd.. 40. Waterford Road. S.W.6. 3757 , totale c London. W.4. Engineer. 3931 A RMATURE Winders and Improvers wanted, must be •Jftsice id ENGINEERING APPRENTICESHIPS IN MINISTRY •^A. Used to A.C. and D.C. repair shop work. Write, ^alreqd. OF SUPPLY ESTABLISHMENTS stating experience and wages required, to—W. H. Sugden pCTRlCi & Co. Ltd.. Glenny Road. Barking. 3958 g8, prie A RMATURE-winding Working Foreman required for and lin N Open Competitive Examination for Engineering -£A repair shop in South London. Good disciplinarian ^ h o te A Apprentices in the Royal Ordnance Factories in and repair shop experience essential.—Box 5057, c/o The % in W e various parts of the country and in the Royal Aircraft Electrical Review. Establishment. Famborough, will be held at local centres SSISTANT Electrical Development Engineer, of Degree J^OPto £ in March. 1947. A or Higher National standard, with knowledge of g ive f Engineering apprentices are expected to reach Higher electronics and experience of laboratory work on com National Certificate or equivalent standard by the end of munications and measurements. Permanent position, their apprenticeship. Candidates must be not less than good prospects. Apply, stating age, qualifications and sixteen and not more than eighteen years of age on 1 st salary desired.—Muirhead & Co. Ltd., Elmers End. ierience. } March. 1947. Beckenham. 4066 p w Copies of the regulations and forms of application may SSISTANT for sales department of company manufac be obtained from the Secretary. Ministry of Supply, A turing heat-treatment furnaces and electrical equip ? s t w t . Room 268 (Exam.). Shell-Mex House, Strand. London. ment to prepare quotations and technical specifications Paie, W.C.2. The latest date for the receipt of applications is and assist in publicity work, preparation of catalogues, etc. 31st January, 1947. 4013 Young man preferred. Replies should give fullest details jïw ha. of education, previous arid present positions and salary Senior Electrical Sales Engineer is required for service required.—G.W.B. Electric Furnaces Ltd., Dibdale Works. "ifcice, ti A in Malaya. Applicants should be fully qualified Dudley. 3847 ta electrical engineers, preferably with steam turbine experi SSISTANT Works Engineer required for electric cable fnerieç ence. Reply, giving full details of experience, age. and A manufacturers. London area. Age 30-40. Experience Jjttj bj salary required, to—The Labour Dept., Brush Electrical in cable machinery desirable. State age, experience and Engineering Co. L td., Loughborough. 4039 salary required.—Box 4055. c/o The Electrical Review. Wrienc tuuvi u , I b*4() E l e c t r ic a l R e v ie w 63
A SSISTANT Bookkeeper (Lady) reauired by City firm Xfi LECTRICAL Engineer required for investigations into „?f ^Porters. No Saturdays. Write—Box P.Y.R., factory processes and cable manufacturing problems. c/o 95. Bishopsgate, E.C.2 . 3880 B.Sc. or equivalent in electrical engineering or physics. T3U YER/ Progress Engineer required for light engineer- Some factory experience desirable. Age 21-26. Salary mg works. North Wales district. Preference given £6 to £8 per week according to age and experience. Oppor to applicant having held similar position and sound know tunities for advancement. Apply—Staff Officer. British ledge of modern methods of production. Write, giving Insulated Callender’s Cables Ltd.. Erith Works. Belvedere. full particulars, experience and salary required. — Box Kent. SR/14. 4010 4045, c/o The Electrical Review. XfiLECTRICIANS, first class, suitable for factory and LERICAL Assistant required for stores office. Must private house work; also Maintenance Electricians C have good knowledge of electrical material.—London for private plants. Open shop, Grade C wages. Write, Electrical Co.. 92. Blackfriars Road. S.E.l. 104 giving full details of experience and copy of references, /"lOIL Winding Foreman required by The Phoenix Tele- to—Box 4007, c/o The Electrical Review. phone & Electric Works Ltd. at their works at The T^LECTRICIANS wanted for large factory in Essex. Hyde, Hendon. London, N.W.9. Must be experienced in i under good conditions, including a 5-day week, good all types of coils used in the manufacture of telecommuni wages paid, in agreement with trade unions. Experienced cation equipment. Apply in writing, giving full particulars in factory maintenance, wiring and plant installation. and salary required. 3887 A.C. and D.C.—Box 4012, c/o The Electrical Review. ONSULTING engineer requires man about 30 years of Xj^NGINEERS and Draughtsmen are invited to apply to C age competent to write specifications for factory plant a large electrical engineering firm in the Midlands installations and supervise work. Can offer post either in which has vacancies in the switchgear department for London or East Anglia to suit circumstances. State Technical Sales, Contract, Costing and Design Engineers; experience, qualifications, etc., and salary required.—Box also experienced Technical Engineers capable of handling 4040, c/o The Electrical Review. large projects for generation, transmission and distribution. ESIGNER required for manufacturers of electric motor Vacancies also exist for Draughtsmen for circuit diagram D starters. Only those with actual design and/or manu and general work.—Box 69, c/o The Electrical Review. facturing experience in electric motor starters need apply, NGINEERS required for research and development with full particulars as to experience, qualifications, salary E department of a firm in the London area. Previous required, etc., to—Box 3907. c/o The Electrical Review. experience on the development of electronic components ESIGNER-Draughtsman, capable of taking charge of necessary. Applicants should write, stating age and ex D switchgear development up to 11 kV, required by perience. to—Box 3929. c/o The Electrical Review. firm in Midlands. Good salary and prospects. Housing STIMATOR and Draughtsman required, with good accommodation for suitable man. Write—Box No. 324. E knowledge of installation work. Write, giving full 8. Serle Street. London, W.C.2. 3795 particulars, to—Troughton & Young Ltd., Imperial Court. RAUGHTSMAN with experience of H.T. and L.T. oil Basil Street. Knightsbridge, S.W.3. 5071 D circuit breakers and metalclad switchgear required IRST-class Electrician wanted, used to installation for South Midlands. Technical man preferred. Write, F work. Permanent post for right man. Apply—R. J. giving details of experience, technical education, age and Kemp & Co. Ltd.. Coalville, nr. Leicester. 9926 salary required.— Box 3841, c/o The Electrical Review. LAME-proof. Air Break. Switchgear Designer-Draughts- RAUGHTSMAN with experience of small pressings, F man. generous salary, good prospects, 5-day week. D castings and/or electrical fittings required for work Assistance with housing. Write—Box No. 323, 8. Serle on automobile lamps by progressive firm in North London - Street. London. W.C.2. 3796 —Box 4057, c/o The Electrical Review. T^URNACE Engineer required by manufacturers, London J- district. Electrical and mechanical experience neces T'lRAUGHTSMAN-Designer, young, with technical ability sary in design and estimating, all types electric furnaces. and light engineering or instrument experience, Apply, stating age, experience and salary required, to— required by small optical instrument firm in London. Box 4032. c/o The Electrical Review. Good prospects for right man.—Box 4003, c/o 'The Elec OURNEYMAN Electrician for London and environs, trical Review. J used to factory power and lighting installation work. RAUGHTSMEN, preferably with telecommunications Write, stating experience, wages, etc., to—Box 4037. c/o D experience, required by large Arm in the Midlands. The Electrical Review. Maximum salary £350 plus cost of living bonus. Write, OURNEYMAN Maintenance Engineers, familiar with giving details of experience, age. and salary required.— J all types of A.C. and D.C. lifts, motors, etc.. for Br*r 11 o /n Thp Electrical Review. London and suburbs. Must have held similar job. Write, "P^RAUGHTSMEN required by switchgear engineers. stating full particulars, to—Box 4035, c/o The Electrical -U Experienced in contract work, protective gear dia Review. grams or design. Applications in writing, with full parti UNIOR Sales Engineer required with sound knowledge culars. to—Ferguson, Pailin Ltd.. Manchester, 11. 86 J of industrial electrical equipment and capable of hand RAUGHTSMEN required. Seniors, for light frameworks ling own correspondence. Apply in writing to—The Sun D and mechanisms. Workshop training knowledge of Electrical Co. Ltd.. 118/120 Charing Cross Rd. W.C.2. 4017 radio transmitters and receivers an advantage. Good salary UNIOR Test Room Assistant required in West London paid to suitable applicants. S.W. London district.—Box J district for A.C. and D.C. fractional h.p. motor test 4019. c/o The Electrical Review. ing. Reply, stating age. experience and salary required, LECTRIC Light Fittings Co. have vacancy for person to—Box 4038. c/o The Electrical Review. E to take charge of ordering, despatch and invoicing. ADY Shorthand Typist required in electrical contrac Experience in trade necessary. Write full details age L tors’ office in the City. Please apply, giving details and sal. reqd.—Box 4034, c/o The Electrical Review. as to experience, salary required, to—Box 4061, c/o The TjiLECTRICAL Engineer, experienced in design, take- Electrical Review. off, pricing and submitting complete tenders for ARGE industrial undertaking in North London requires power and lighting installations for industrial buildings, L Flectro and Mechanical Draughtsmen for cubicle and cinemas, hotels, etc.. required by large electrical con switchboard work. Preference will be given to applicants tractors in West End of London. Only men with thorough with experience in rectifier equipment design. Write, experience of electrical sub-contracting work need apply. stating age, experience and salary reqd.. to—Box D6969. Salary up to £700 p.a. according to experience and ability. A.K. Advg., 212a, Shaftesbury Avenue, W.C.2. 4002 Please give full details of age. experience and salary EADING firm cable manufacturers and electric engi required.—Box 4023. c/o The Electrical Review. L neers requires immediately Senior Estimator. Good Tp LECTRICAL Shop and Showroom Manager or working conditions and prospects. Full particulars and Manageress. Good class business. Must have salary required (in confidence) to—Box 4042, c/o The experience. Knowledge of radio^ an_advantage, _but not Flertrical Review. essential.— Warrington Electrical Co. Ltd., 129-ldi. 3909 1Y/TALAYA. Applications are invited for the following Bridere Street. W arrington. positions: Asrictant Engineer (Generation), age 25-35. XjiLECTRICAL Showroom Salesman required for old- good technical qualifications and experience of power sta J-J established company in South Kensington, age under tion work essential. Mains Assistant, age 25-35; applicants 45. Must have knowledge of electrical and radio trade. should have experience on construction and maintenance Permanent position. Write, stating age. salair and of H.T. overhead lines and substations. Experience of experience, to—Box 4018. c/o The Electrical Review. instailat;oo and maintenance of motors and control gear TjiSTIMATING and Costs Engineer required. Previous also derirable. Remuneration for both positions according experience essential, able to work on own initiative. to Qualifications and experience within the salary range Required bv Midland firm manufacturing all types of £560 X £28 to £700. plus cost-of-living allowance, free regulators and resistances. Write, giving full part,cu'ars passage, quarters, medical attendance and car allowance. of experience and salary required.—Box 3997, c/o ihe There is also a contributory pension scheme. Apply in Electrical Review. first instance to—Box 4001. c/o The Electrical Review. 64 E lectrical Review D ecem ber 20, 1946
T ON DON electrical wholesalers require Representative QENIOR Designer-Draughtsman required for electrical with car to cover London area and outskirts. Good ^ control gear. Knowledge of contactor design essential. commission paid with small car allowance- Write, stating 5-day week and excellent prospects. Age over 35. Write experience, to—Box 4005, c/o The Electrical Review. details of experience, salary required, to—Box No. 327, 'jX/TANAGER or Manageress of good appearance and 8 . Serle Street, London, W.C.2. 3885 personality required for high-class electrical and radio rpELEOOMMUNICATION Engineers required for ex- retail and art goods business, 30 miles from London. Must change engineering. Sound grounding in “ light be thorougnly capable and able to take full control. Write current ” electrical engineering; ability to read drawings with particulars, stating age, experience and salary re and some experience in telephone exchange work required. quired.—Box 115, c/o The Electrical Review. Applicants should give full details of age, training and 1X/TERSEYSIDE firm of electrical contiactors require experience and state salary required.—Siemens Brothers first-class Estimating/Supervising Engineer. Must & Co. Ltd., Ref. 231, Woolwich, S.E.18. 4051 be capable of preparing complete schemes, taking off RADE Counter Assistant required. Good knowledge quantities, costing and supervising all types of electrical T of electrical material essential.— London Electrical installation work. Give full details of age, training, Co., 92, Blackfriars Road, S.E.l. 125 qualifications and experience. State salary required and ELL-known electrical engineering company have send copies of references to—Box 4031, c/o The Elec W vacancies for suitable lads, over 15 years of age. trical Review. with Matriculation or General School Certificate, for ■'VTORTH-East Coast firm requires Engineer between 25 Apprenticeship in the above industry. Good rates of and 30 years of age for land boiler department to pay and living accommodation provided.—Box 3784. c/o assist with tenders, testing, etc. Preferably with engineer The Electrical Review. ing degree. Please give full particulars with application ELL-known engineering trading and manufacturing and state salary required.—Box 4025, c/o The Electrical W concern have the following vacancies for well- Review . educated gentlemen having good knowledge of electrical OWER Station Electrical Maintenance Engineers machinery and engineering plant, (a) Sales Engineer to P required for modern power station in the Middle take over correspondence in connection with sale and East. Candidates should have served a full apprentice purchase, as well as to generally assist in the organisation; ship with a reputed company of electrical engineers and (b) Costing Clerk to deal with stores, wage sheets, etc.: had subsequent experience in the maintenance of power (c) Young Electrical Engineer, with previous experience station electrical equipment, particularly metalclad in overhaul of electrical machinery, as Assistant to Chief switchgear for high voltages. Higher or ordinary National Engineer for supervision of works department. Applica Certificate in Electrical Engineering. Age 30-35. Attrac tions in confidence, stating age, references, salary required, tive salary in sterling plus allowance in local currency. only from persons who held similar positions before.— Free furnished bachelor accommodation. Free medical Box 4066, c/o The Electrical Review. attention and passages Kit allowance and Provident 'VXT'ORKING Foreman Armature Winder for repair shop Fund benefits. Apply, stating age, qualifications and ’ ’ in Central London district. Permanent situation for experience, to—Dept. F. 34, Box 3952, c/o The Electrical right man. Write, stating experience, wages, etc., to— R eview . Box 4036, c/o The Electrical Review. T3RODUCTION Engineer, young, with good education T^O RK S Manager, having held similar position for and experience of planning and jig and tool design, ' * many years and experienced radio or light electrical required by small optical instrument firm in London. engineering (mass production), is offered an excellent Opening for man with initiative and drive.—Box 4004. opportunity with view to ultimate directorship. Bucks c/o The Electrical Review. area.—Box 4059, c/o The Electrical Review. EQUIRED by oil company for Persian Gulf, expert-’ -Ray Apparatus. Watson & Sons (Electro-Medical) R enced Electrical Engineer and Assistant Electrical X Ltd. have vacancies in London and Wembley for Engineer, under 35, unmarried or prepared to proceed several technical men, preferably with some knowledge unaccompanied. Initial contract 3 years.—Box 4024, c/o of X-ray apparatus, for Administrative. Development, The Electrical Review. Design. Drawing Office and Sales work. Excellent oppor OYAL Air Force. There are still several hundred tunities for permanent progressive positions in a growing R vacancies for Short Service Officers in the recently industry. Write, in confidence, giving full particulars, formed Education Branch. Candidates should be between to—Managing Director, Watson & Sons (Electro-Medical) 23 and 31 and should have a university degree in Mathe Ltd.. Parker Street. Kingsway, W.C.2. 4020 matics. physics or engineering. A man age 25 may draw OUNG Meter Engineers wanted for manufacturers’ pay at £310, £347 or £420 a year on entry, according to Y office in Home Counties. State age, training, experi qualifications and experience. In addition to pay, single ence, and salary required.—Box 9993, c/o The Electrical men receive free furnished accommodation and married Review . men receive married allowance of £228: in both cases rations are provided in kind or a ration allowance of £57 APPOINTM ENTS FILLED a year paid in lieu. A gratuity is payable on completion Dissatisfaction having been so often expressed that un of 5 years’ service. This will ultimately be £500. but for successful applicants are left in ignorance of the fact that officers appointed until further notice it will be £562 10s. the position applied for has been filled, may we suggest Gratuity will be reduced for men in contributory service that Advertisers notify us to that effect when they have for civil teacher’s superannuation by the amount of the arrived at a decision? We will then insert a notice free superannuation contributions, which will be paid by the of charge under this heading. Air Ministry. Opportunities will arise for appointment to ORTHERN Aluminium Co. Ltd.—Electrical Engineer. permanent commissions. Full details and application forms N All applicants are thanked. from Air Ministry (A.R.l), Kingsway, London, W.C.2. 3995 OTORES Clerk required by firm of elec. contractors. SITUATIONS W ANTED ^ S.W.l area. Knowledge of purchasing necessary. Works Manager desires change. Accustomed to com Write full details, age and salary reqd.—Box 4033, c/o A plete charge of extensive factory producing telephone The Electrical Review. cables, cords and insulated wires. Position must com QTORES and Trade Counter Assistant, must have good mand a salary in keeping with applicant’s status.—Box knowledge of all accessories, switchgear and cable. 5002. c/o The Electrical Review. Wage £5 10s. Wholesaler, West End. London.—Box 4006, HIEF Engineer. M.N., First Class B.O.T. Certificate. c/o The Electrical Review. C M.I.Mar.E.. requires position ashore, U.K. Consider UDAN Government. Sudan Railways require an Elec able experience large and small Diesel and petrol engines, S trical Foreman for service in the Sudan. Applicants building and maintenance, boilers, refrigerators, mill should have served full apprenticeship and be conversant engines and plant, electrical machinery, etc. Adaptable with A.C. and D.C. maintenance, distribution, motors, to new processes, wide range considered.—Box 3925, c/o and equipment. Meter testing and Diesel power station The Electrical Review. experience would be an advantage. Minimum age 28 LECTRICAL Engineer, Grad. I.E.E., age 26, works years. Provident fund contract with security for 7 years E apprenticeship motor and dynamo manufacturer, after completion of 2 years’ probation. Starting rate subsequent experience on design, manufacture and repairs, £E.380 or more, according to age, qualifications and excellent testimonials, etc., desires progressive technical experience, with periodic increases on recommendation up situation in U.K. Starting salary £350 p.a.—Box 9997. to £E.920. Cost-of-living allowance now 35% of salary, c/o The Electrical Review. subject to maximum of £E.180. Outfit allowance £E.40. XECUTIVE (39) seeks progressive permanent position. Free passage on appointment and liberal leave with passage E B.Sc., A.M.I.E.E., extensive experience in design, allowance. There is at present no income tax in the Sudan development, industrial research. Modern mass produc (£E.l = £1 0s. 6d.). Strict medical examination. Appli tion methods as applied to public address equipment, radio cation form and further particulars from Sudan Agent in components and precision electrical measuring instruments. London. Wellington House. Buckingham Gate, S.W.l. Experienced sales, purchasing and business management. Please mark envelope " Electrical Foreman.” 4022 —Box 5040. c/o The Electrical Review. e l e c t r i c a l R e v ie w 65
■p'LECTRICAL Engineer. Grad.I.E.E., A.M.J.I.E.. with HECKMONDWIKE U.D.C. ELECTRICITY DEPT. practical and sales experience, desires post. Outside bales or .Representative's position preferred. Midlands area. Electrical, mechanical and heating engineering T 'H E Council invite tenders for the purchase and removal e ^ e n e n c e.— B ox 999G. c / o The Electrical Review. -1- of the following: — I^LELIKILAL Engineer, 21 years’ experience all types One 100-amp. Ferranti single-phase Rotating meter J-* wiring, cooking, heating installations and main Testing Set. unused and complete with meter tools tenance, desires change to post where executive ability, as supplied by the manufacturer. experience and honest endeavour would be appreciated.— The equipment can be inspected at the Electricity Box 5048, c/o The Electrical Review. Works, Bath Road, Heckmondwike. by appointment. ■OLBCIRICAL Engineer, 36, 5 years’ college training, Tenders should reach me not later than Monday, the J-* 12 years’ experience technical sales, estimating 30th December, 1946. tenders, orders, industrial motors and ancillary equipment, The Council do not bind themselves to accept the including fractional, seeks progressive permanency.—Box highest or any offer. 5023. c/o The Electrical Review. ™ 4 . . L- A. DENNIS. A.M.I.E.E.. "C^ULL-time Agency wanted, London and the South, by Electricity Offices, Engineer and Manager. J- London engineer with own house, car and telephone. High Street. A.M.I.E.E., public school and university background; Heckmondwike. Yorks. 4063 20 years sales engineer for well-known motor and starter manufacturers. Excellent credentials. — Box 5035. c/o HECKMONDWIKE U.D.C. ELECTRICITY DEPT. The Electrical Review. ■VTECHAN1CAL Engineer, age 38. 10 yrs.’ Colonial TpHE Council invite offers for the purchase and removal Govt, service, comprehensive practical experience of approximately 3 tons of Lead in ingots approxi maintenance and operation of Diesel-electric gentg. (and mately 36 lbs. each. Tenders should reach me not later pumping plants), seeks position, preferably where housing than Monday, the 30th December. 1946. available.—Box 9992, c/o The Electrical Review. OSITION on clerical, accounting or showroom staff of L. A. DENNIS. A.M.I.E.E.. P electricity supply undertaking, contractors or manu Electricity Offices. Engineer and Manager. facturers, by experienced Sales Representative. Health High Street. impaired for outdoor work only by 6 years’ war service Heckmondwike, Yorks. 4064 (army). Excellent references, holder of E.D.A. domestic certificate and diploma ; \ aried previous experience in A Cooksley & Co. Ltd. offer large selection of used accounts and office work. Linguist, widely travelled.— Electric Motors. A.C. and D.C. Write—21 /25. Box 5000. c/o The Electrical Review. Tabernacle Street, London. E.C.2 (Monarch 3357/58). 46 T>UBI,IC schoolman, good personality, aged 22. desires A Number of All-Perspex Fluorescent Troughs. 4 ft.. position as Representative, and would make himself -r i- single Met-Vick type, new, complete with all gear, generally useful.—Box 5075. c/o The Electrical Review. can be supplied by—John Phillips & Co. Electrics. 31. EPRESENTATIVE, with large connection wholesalers Fortune Green Rd.. N.W .6 (Tel. Hampstead 8132). 3999 R over whole southern half England, wishes contact A number of high-speed Diesel Generating Sets, unused, reliable manufacturing firm, domestic lines and accessories. ex-Govt. disposal, for prompt delivery, latest designs, Own car. Immediate sales guaranteed. Available at once. direct-coupled. 1 50 kW. 400/3//50; 3 50 kW. 110 and References.—Manby, Norman House. Westbourne, near 230 v. D.C.; 3 30 kVA. 400/3/50; 2 15 kW, 110 and Emsworth. Hants. 5008 230 v. D.C.; 2 15 kW. 230/1/50. Many others available. EPRESENTATIVE (30). experienced supply company —Electroplant Company. Wembley. Middlesex. 4065 R routine (incl. showroom) as consumers’ adviser, has A Quantity of 3-ph., 400-v. Suds Pumps, reconditioned, practical experience of installations and apparatus. Seeks from stock. — John Phillips & Co. Electrics. 31. prospects S. London or near. Min. £350 p.a.—Box 5051. Fortune Green Rd.. N.W .6 (Tel. Hampstead 8132). 4000 c/o The Electrical Review. Superior Streamlined Toaster in one-piece die-cast ENIOR Design and Development Engineer. 44. wide, A aluminium, with attractive mirror finish. Price S varied experience light electro-mechanical design and 39s. 6d. subject. Immediate delivery. Sample. 31s. Cash production, electronics, plastics, D.O. organisation. At with order.—Metropolitan Distribution Ltd.. Truro. 94 present witn large world-famous concern, seeks executive .C. and D.C. House Service Meters, all sizes, quarterly post with smaller, progressive firm. London or near.— A and prepayment, reconditioned, guaranteed one year. Box 5026. c/o The Electrical Review. Repairs and recalibrations.—The Victa Electrical Co., 47, ENIOR Draughtsman, age 26, desires change of occupa Battersea High Street, S.W. 11. Tel. Battersea 0780. 19 S tion. Experience in radio and heavy electrical engi .C. and D.C. Motors, all sizes, large stocks, fully neering. Any progressive position considered.—Box 5046, A guaranteed.—Milo Engineering Works. Milo Road. c/o The Electrical Review. East Dulwich. S.E.22 (Forest Hill 2278-9). 102 TIT’ORKS Manager, A.M.I.P.E.. M.I.E.C.E., specialis- A .0./D.C. Motors and Switchgear can be supplied from ing in economical mass production electrical and stock or at short notice. Send your requirements light mechanical parts, seeks responsible position. London to John Phillips & Co. Electrics, 31, Fortune Green Rd.. area preferred ; sound experience modern production W. Hampstead (Telephone, Hampstead 8132). 128 methods; excellent references.—Box 5032, c/o The .C./D.C. 5-valve Superheterodyne Sensitive 3-wave Electrical Review. A Band Receiver. Excellent tone. Attractive modern cabinets in “ Plastele ” or polished wood, £16 16s. Usual F O R S A L E trade terms and facilities. Early delivery. Trade only.— Morgan. Osborne & Co. Ltd.. Southview Road. Warline Traders buying and selling hereunder must observe the ham, Surrey. n o Restriction of Resale Order, S. R . & O. 1942 N o . 958. .C. Motors, l/75th h.p. to 5 h.p., all voltages. Also A D.C.—The Johnson Engineering Co.. 319. Kennington CITY OF MANCHESTER ELECTRICITY DEPT. Road. London. S.E.ll. Telephones. Reliance 1412/3. 57 .C. Slip-Ring Motors. 517 h.p., 3.300/3/50 cycles. "FENDERS are invited for the purchase, dismantling. A 580 r.p.m., L. D. & M .; 340 h.p., 400/3/50 cycles. -*- loading and removal from site of the following plant: 1.450 r.p.m.. Harland; 260 h.p.. 400/3/50 cycles. 580 (1) One 1.500-kW Motor Converter (3-wire). 6.500/415/ r.p.m.. L. D. & M.; 170 h.p.. 400/3/50 cycles. 960 r.p.m.. 455 v.. Bruce Peebles. 1920. . Met.-Vick.; 150 h.p.. 400/3/50 cycles. 580 r.p.m., Har (2) One 750-kW Motor Converter (3-wire). 6.500/40o/ land; 100 h.p., 400/3/50 cycles, 360 r.p.m., B.T.H.; 2 455 v., Bruce Peebles. 1926. 75 h.p., 400/3/50 cycles. 580 r.p.m., Crom.-Park.; 35 (3) One 1,000-kW Motor Converter (3-wire). 6,500/400/ h.p.. 400/3/50 cycles. 580 r.p.m., Brook; 2 35 h.p.. 440 v.. Bruce Peebles. 1925. . rnn,.0(, 400/3/50 cycles. 960 r.p.m.. Fuller.—Newman Industries (4) Two 220-kW Motor Generators (2-wire). 6.500/O20 Limited. Yate, Bristol. 3992 v ., A .E .G ., 1902. , m . . . . . TTRACTIVE Electrical Hall Lanterns available from Conditions and form of tender, also official permit to A stock at reduced price.—Reeves Electrical & Radio n e w the plant, may be obtained on application to Mr. Co. L td.. Baldock, Herts. 3933 Et. A. S. Thwaites. Chief Engineer and Manager. Elec tricity Departm ent , P ost Office B’ox 493, I own Hall. UTO Bulbs. Side and Tail and Head Bulbs, prompt A delivery. Wholesalers send purchase tax number UTeudere.r,addressed to the CJiainuan of the Electricity for samples and price.—J. N. Somers Ltd.. 10/12. Crickle- 'hmmittpf» to be delivered not later than ten o clock wood Broadway. London, N.W.2 (Tel. GLA. 3005.) 5033 unfon Ftiday. 3rd J an uary. m The Committee does DATTERY Chargers for home and export. 4 models. .ot bind itself to accept the togtartor 2-6-12 v.. 1. 2 or 4 amp. D.C., any mains voltage. Generous trade terms. Write for catalogue.—The Banner rown Hall, Manchester. 2. Town Clerk. Electric Co. Ltd.. Hoddesdon, Herts. Tel.: Hoddesdon 9th December. 1946. 2659. 97 66 E l e c t r i c a l R e v ie w December 20, 1946
EEANTEE Festoon Striplight Holders, made of X20 “CYLUORESCENT Lighting. Special offer, immediate B Bakelite, for use with 7/.029 T.T.R. cable, require delivery, Trough and Flush Type Fittings, fitted with no tools or screws for wiring. Immediate delivery of any Constead or ballast control gear. Without tubes.—Scemco quantity. Passed by the tire authorities. Used by cor Ltd., 6/7. Soho St.. London, W .l (Tel. GER. 1461). 120 porations and supply companies all over the world. Large OR quick sale: D.C.C., S.C.C. and Resistance Wires. quantities of British made Electric Lamps and Cable F Copper Wire. D.S.C., 16. 18. 19. 20. 21, 23. 26. 27. always in stock.—The Beeantee Illuminations (London) 29. 30, 31. 32, 36. 37, 39. 40 s.w.g.. .021", .019" dia. Ltd.. Temporary Address, 6, Upper Street, Islington, S.S.C., 31, 38 s.w.g. D.C.C., 1, 2, 3, 4, 5. 6, 7, 8. 9, London, N.l (Phone, Canonbury 4555). 71 10. 11. 12. 13. 14, 15. 16. 17. 19. 20, 21. 22, 23. 24 s.w.g.. .T.A. A comprehensive service is now available for .030", .034", .038", .052", .060", .068", .084", .096", .108" B all classes of tools and equipment for the accumu dia. S.C.C.. 11. 12. 16, 17. 18, 19, 20. 21. 22 , 23. 24. lator trade. — B.T.A., 246, Cavendish Koad, London, 25. 26, 27, 28, 29 s.w.g. Copper Cord, braid. 392/43 S.W.12. Tel.: Balham 6691/2. 10 s.w.g., copper. Copper Braiding. 24/90/006. Wire . & W. Water Tube Boilers for disposal. Two 50.000 Copper Tinned, 33 s.w.g. Fuse Wire, 1 amp. Aerial B lbs. evaporation, 310 lbs. w.p.; two 50.000 lbs. Wire, each of 400 yds., 7/023, enam. and 7/19 bronze; evaporation. 220 lbs. w.p.; four 30.000 lbs. evaporation, 3/040 P.B., bronze; 28/35 w/clip for kite aerial, bronze. 260 lbs. w.p.; one 20.000 lbs. evaporation, 175 lbs. w.p.; Resistance Wire, 12. 14, 16. 17, 20. 21. 22, 23. 26. 29. one 12.000 lbs. evaporation, 200 lbs. w.p.; two 16,000 lbs. 34, 36, 37, 39. 40, 47 s.w.g., 80/20, copper nickel. evaporation. 190 lbs. w.p.; one 9/10.000 lbs. evaporation, D.S.C.. 23£, 28£, 30, 21 s.w.g. Resistance Wire, oxi 200 lbs. w.p. We install complete, including brickwork. dised, .0156 dia., 29, 21, 24. 30 s.w.g., oxy.-ferry. Economisers. Pumps, Piping, Valves, Generating Sets and Resistance Wire. 6 strands, .080", .0064" dia. Wire Motors in stock. Please send us your enquiries; we can Copper. 1/21 s.w.g., 100. Enamelled Copper Wire, give immediate delivery.—Burford, Taylor «Sc Co. Ltd.. stranded. -7/030/-19/032. aerial. Aerial Copper Wire, Boiler Specialists, Middlesbrough. Telephone, Middles 100. Enamelled Copper Wire, specially stranded. -3/3/3/ brough 2622. 32 3/3/3/38, 31/38-3/3/3/3/38, enam. and str., left bare; .C. Motors, new, 200/230 volts, 1,400 r.p.m .; 8 to 31£ 31/38-3/3/3/3/38, enam. and str. and cott. braided; D h.p., also 110 volts. D.C., 21 h.p., several available 27/38, enam., str., D.R.C.; 9/38, reg. cel. enam. and with starters.—Stewart Thomson
TTOUSE METERS. 200/240 v. A.C.. s/ph.. 50 c. Price X>HONE 98 Staines. 90-kW Ruston Diesel Set. 110 vo. „ 1'S. 6d. plus Is. carriage.—Universal Electrical. 2 2 1. A D.C.; 25-kW Mirrlees ditto. 110 vo.; 7/9-kW Ruston City Road. London. E .C .l. 129 ditto. 110 vo.. 5-kVA Ruston ditto. 400/1/50; Weir Feed TXOUSEHOLD Electrical Appliances a speciality. A Pum p. «£" x 6" x 13".—Harry H. Gardam & Co. Ltd.. variety ol 1-kW and 2-kW Electric Fires (portable Starnes. go and inset types). Artificial Coal Fires. Boiling Rings and T>LATING Dynamos (2). 9£ volts. 900 amps.. 1.00*0 other Portable Heaters and Cookers: Hot Plates. a revs.. B.B.. unused, by Crompton-Parkinson, also Radiators. Convector Heaters. Kettles: a variety of numerous D.C. Motors from 1 h.p. to 50 h.p. cheap to Electric Irons; Table Lamps and Shades. Radios. Moving clear.— W. H. Sugden & Co. Ltd.. Glenny Road. Barking. Coil Pick-Ups. Fans. Hair Dryers; Accessories. Flexibles Switches, Torch Cases and Lighting Batteries. New 3956 articles added to list weekly. Lists and illustrations on T3LATING Generators, unused, several ranging from 350 application—Brooks & Bohm Ltd.. 90. Victoria Street. A to 700 amps., 6 to 12 volt, plain or with A.C. or London. S.W.l. Phone. Victoria 9550-14-11. Inland D.C. motor drive. Particulars from—Stewart Thomson Telegrams: Beebatts. Sowest, London. 66 x Sons (Liverpool) Ltd.. Fort Rd.. Seaforth. Liverpool, 21 UNCTION Electric Irons, superior design and quality, (Bootle 2697); or Dacre House, Victoria Street. London. S.W.l (Abbey 4017). 63 J supplied with suitable stand. Also Junction Nickel- plated Torch Cases. Supplied for home trade and export. O EBUILT Motors and Generators. Long deliveries can Distributors—Brooks & Bohm Ltd., 90. Victoria Street. At' often be avoided by purchasing rebuilt secondhand London. S.W.l. Tel. Vic. 9550. 49 plant. We can redesign or replace surplus plant of any Goodman (Radio) Ltd., 9. Percy Street. Tottenham size. Send us your enquiries. Over 1.0U0 ratings actually L• Court Road. W .l. are sole London agents for the in stock here.—Dynamo & Motor Repairs Ltd.. Wembley " Midco ” Elongated Fluorescent Choke and Fluorescent Park. Middlesex (Telephone. Wembley 3121. 4 lines); also Starter Switches. Museum 0216. 76 at Phoenix Works, Belgrave Terrace. Soho Road. Hands- ADDERS, single and extension, from—Ramsay & Sons worth. Birmingham (Telephone. Northern 0898). 26 L ( Forfar) Ltd.. Forfar. 9004 T> OSE Bed Warmers are the best. The most economical ARGE Quantity of 3-amp. Toggle Switches for sale.— At' bed warmer obtainable. Home and overseas trade L Box 5076. c/o The Electrical Review. enquiries invited—S. A. M. Rose. 19. Park Avenue. Old EAD Alloy Sheathed Cables, rubber insulated. 100 Trafford, Manchester. 16. Telephone. TRAfford Park L yards 61/093 at £50; 100 yards 91/093 at £60: 0275. 3872 1.000 yards 127/093 at £70 per 100 yards; 4.000 yards O OTARY Converters in stock, all sizes; enquiries (8 drums) V.I.R. cotton braided 610/018 (equivalent At/ invited. — Universal Electrical, 221, Cit> Road. 37/072) at £10 per 100 yards. Other types available, London. E.C.l. 16 lists.—Electrical Agencies Ltd.. College Street. Belfast. pO TA RY Converters. 200-kW. 6.600/3/50 input. 230 Phone 24813. 5072 volts. 2-wire D.C. output, complete with Trans ESLIE Dixon & Co. for Dynamos. Motors. Switchgear. former and switchgear. seen running in Liverpool. 2.000- L Chargers. Telephones, etc.—214, Queenstown Road. kW. 6.600/3/50 input. 418/462 volts, three-wire D.C. Battersea. S.W.8. Telephone. MACaulay 2159. 18 output, complete with transformers, starting panels. D.C. 1Y/TOTOR Generator Sets and Convertors, all sizes and machine panels. First-class condition. Two sets avail 1>A voltages from £ kW up to 500 kW in stock.— able.—Stewart Thomson & Sons (Liverpool) Ltd.. Fort Britannia Manufacturing Co. Ltd.. 22/26. Britannia Walk. Road. Seaforth. Liverpool. 21 (Bootle 2697); or Dacre City Road. London. N.I. Telephone. Clerkenwell 5512. House. Victoria Street. London. S.W .l (Abbey 4017). 72 5513 & 5514. 28 CHOT Blast Cabinets, approx. 3' X 3' cube, complete "jVTAMEPLATES. Engraving. Diesinking. Stencils. Steel k-? with shot container valves, pipes and gauges: hand Punches.—Stilwell & Sons Ltd., 152, Far Gosford holes and guards; new; 3 for disposal at £70 each. Zinc Street. Coventry. 14 Spray Cabinets. 3' x 3': 2 for disposal at £20 each. ~VTEW and Reconditioned G uaranteed Motors. All types Reduction Gear, 50 to 1. at £35 each. Apply by letter to and sizes, also we can redesign or repair your exist —Johnson’s Reinforced Concrete Eng. Co. Ltd.. Artillery ing plant electrically or mechanically and save you long House. Artillery Row. London, S.W.l. 4009 delays. Our experience extends over 20 years.— OINGLE-Phase Slip-Ring Induction Motors. 1 30 h.p.. Browning’s Electric Co. Ltd. Grangewood 4003-4-5. 58 ^ 1.000 r.p.m., 200/400 volts by Brook; 1 15 h.p., 'VTEW £-h.p. 100/110-volt D.C. Motors, 1.800 r.p.m. 1.500 r.p.m., 200 volts by Brook; 1 15 h.p., 1.450 r.p.m., continuous rating. New 1/75-h.p. A.C./D.C. 200 volts by A.S.E.A.; 1 15 h.p.. 950 r.p.m., 200 volts Motors 110 volt. 50 cycles continuous rating. 4.500 r.p.m. by Fuller; 1 3 h.p., 1.450 r.p.m., 460 volts by Hopkinson. geared down 72 to 1. New 12-volt D.C. Motors, shunt Squirrel Cage. All the above motors fitted with ball wound, geared down to 25 r.p.m. New A.C. Mains Trans and roller bearings.—Oldfield Engineering Company formers. 200. 230. 250 input. 6 and 11 volts. 2 amps, out Limited. 96. East Ordsall Lane. Salford. 5. 3987 put. New Westinghouse Rectifiers style L.T. 42 A.C. SPIRAL Elements for electric fires, boiling rings, and volts 11. D.C. 6 volts 1 amp. continuous.—Box 4062. ^ other appliances, supplied to order.—Electrothermal c/o The Electrical Review. Engineering Ltd.. 270. Neville Road. London. E.7. 54 VriSSEN Type Huts, secondhand. 24' x 16'. £52; 36' x 16'. £72. Plasterboard Huts and other build QPIRALS. first quality. 500. 600. 750 and 1.000 watt. ings now available, some with floors. Prompt despatch ^ all voltages, for immediate delivery.—Box 59. c/o arranged and no licence required. Inspection welcomed The Electrical Review. or write for full list from—J. Thorn & Sons Ltd.. Box 80. TAFF Time Checking and Job Costing Time Recorders Brampton Road. Bexleyheath, Kent (Telephone, Bexley- S (all makes) for quick cash sale. Exceptional con heath 305). 47 dition. Write — Box 528. Smiths. 100. Fleet Street. NE Browett Lindley Steam Engine. 160/200 lb- London. E.C.4. 31 O coupled to G.E.C. 33-kW. D.C. 220-volt, 720-r.p.m. TEAM Generating Plant. The following is a selection generator: two G.E.C. 33-kW. 220-volt D.C.. 720-r.p.m. S of sets available in our comprehensive stock : 2.000-kW Generators. Inspect on site.—Cromer Ring Mill (1919) B.T.H. Turbo-Alternator. 6.600/3/50.180/210-lbs. pressure, Ltd., Jubilee Road. Middleton. 4030 complete with surface condenser and all auxiliaries, seen NE 2-Cubicle B.T.H. Mercury Arc Rectifier. 150 kW. running. 1.250-kW Brush Ljungstrom Turbo-Alternator. O tvne G.H.620. form B. Each cubicle output 75 kW. 400/3/50. 200 lbs. pressure, complete with surface conden volts 230 amps. 326. Omplete with transformer and ser and all auxiliaries, seen running. 750-kW Adamson/ bulbs. New in 1938. Little used. Purchaser to remove Mather & Platt High-pressure Pass-out Turbo-Generator. from existing site. Price £600.—West Gloucestershire 200-lbs. initial steam pressure, passing out 25.000 lbs. per Power Co.. Ltd.. 126. London Road. G’oucester. 3961 hour at 80-lbs. pressure. 500 volts, three-wire D.C.. with NE 400/440-v.. 3-phase. 4-h.p. Motor, direct coupled balancer, complete with surface condenser and all auxili O to 220-v.. 11.5-amp. D.C. compound generator, com aries. First-class condition. Full particulars from— plete with motor starter and generator panel: one 220-v. Stewart Thomson & Sons (Liverpool) Ltd.. Fort Road. D.C. Motor. 1.5 h.p.. compound, with starting and speed Seaforth. Liverpool. 21 (Bootle 2697); or Dacre House. control panel; one 15-h.p.. 400/ 440-v.. slip-rmg 3-phase Victoria Street. London. S.W.l (Abbey 4017). 98 Motor with starter. 1.450 r.p.m.. °‘X ’ OUPERIOR Type Builders’ Ladders now in production- EK. Keith Fan. 400/440 v., 3-phase, wdh pu^h-button ^ also Steps. Trestles and Extension Ladders. Phone— Starter.—John Richards & Co (Electrical Engineers) Ltd.. Shaftesbury Ladders Ltd.. 453. Katherine Road. E 7 9. High Street. Burton-upon-Trent. Staffs. 40-8 Gransrewond 3 3 6 3 /4 . 15 SMOR Radio Heart equals complete first-class 5-valve rriANGENT Bells, surplus stock of 120 new Tangent O Superhet. positively only small condensers and resist A Bells. 6" gong. 220 v. D.C.. also 36 G.E.C. with 6" ances to find. Super-efficient components. Building m- gong. 110 volt D.C. Clearing at 12s. 6d. each, dozen sfi-uctions £5 16s Cabinets. Trade invited.—Moram lots, or 10s. each in bulk. Other types and voltages Osborne Ltd.. South view Rd.. Upper Warlmgham -560. available. Lists.—Electrical Agencies Ltd.. College Street Belfast. Phone 24813. 5973 Surrey. 68 E l e c t r i c a l R e v ie w December 20, 1946
^TRANSFORMER "Welders’' to BSS/171/1936 4 kVA, EE Meggers, 500 v., in case, £12 5s. 6d . ; Record 1-phase, 50, type AN, 400/230-0-90 volts, excellent W 500-v. Test Set. £11. C.O.D. (new).—Robins. 222, condition, £50. carriage paid. Apply—J. Thorn & Sons West End Lane. N.W .6 (HAM. 0879). 82 Ltd., Brampton Road, Bexleyheath, Kent (Bexleyheath I 240-h.p. L.D.M. Slip-ring Motor, 400/3/50, 725 r.p.m., 305). 122 complete with oil switch and liquid type rotor starter. "17ACUUM Cleaner Parts. Hoses, braided, all diameters. —Oldfield Engineering Company Ltd., 96, East Ordsall * Commutators, bearings, fans, carbon brushes, driving Lane, Salford, 5. 3787 belts, brushes, attachments and fittings for all makes. Kohler 100-volt, l£-kW Automatics, ex. cond.—Box Wholesale only. Send for price list.—Vacuum Cleaner & 2 3916, c/o The Electrical Review. Electrical Supplies Ltd.. 543. Moseley Ed.. B'ham. 12. 80 -h.p. Motors, secondhand, totally enclosed, half-hour VTACUUM Cleaner Spares and Accessories. Bags, bear- 5 rated, 3,000 r.p.m., 400 v., 3-phase, 50 cycles, A.C.: * ings, belts, brushes, fans, switches, etc. Repairs, also 3-h.p. Motors, reconditioned by makers, as above rewinding, rebristling. Send for price list.—Reliance but protected type and continuously rated. Immediate Vacuum Cleaner Service, 152-154. Broadway, Bexley delivery. — Carter & Co. (Nelson) Limited, Engineers. heath. K en t. 93 Nelson. Lancs. 4047 B.T.H. 230/1/50 Alternator. 9 kVA. 1.500 r.p.m. C-kW and 2£-kW, 230/250-volt D.C. Generating Sets, 1 6 230/1/50 Extractor Fans by Verity, 18" dia.. complete with 4-cylinder, 10-h.p. Austin Engines, 700 r.p.m. 1 B.T.H. M.G. Set, input 400/3/50. out with petrol tanks, radiators, fans and switchboards. Large put 2.5 kW. 110 volts D.C. 1 Crompton Parkinson M.G. number available.—Britannia Manufacturing Co. Ltd.. Set. input 440 volts D.C., output 12/16 volts. 30 amps. 22/26, Britannia Walk, London, N.I. 103 D.C. 1 Newton M.G. Set. input 220 volts D.C., output 1 A-k\V Unit Heaters. 3-phase. 400 volts. Immediate 90 volts, 190 amps. D.C. 1 David Brown Radicon delivery.—Carter & Co. (Nelson) Ltd., Engineers, Reducing Gear, output 4 h.p.. input speed 1.450 r.p.m.. Nelson. Lancs. 4046 reduction ratio 46:1. 1 Hey beard Rectifier, input 1 O" Double Bollard Winch, direct coupled 15-h.p., 415-v., 230/1/50, output to suit 26 cells. 7.5 amps., charge cur 3-phase slip-ring motor with Ellison oil-immersed rent with trickle charging device. 1 D.C. Welding control gear. Apply to—Express Dairy Co. Ltd., Elec. Generator by Electromotors, 4.4 kW. 29/70 volts, 1.200 Dept., Claremont Road, Cricklewood, N.W.2. 3804 r.p.m. with exciter. 1 Crompton Parkinson M.G. Set. 1 £T-h.p. 2-speed S. Cage Motors. 960/475 r.p.m., L.D.M. input 400/3/50, output 60 volts. 400 amps, with direct b. brgs., 3 available. Price £50 each.—Electric coupled exciter.—Oldfield Engineering Company Limited. Machinery Co., Union St.. Ancoats, Manchester. 3950 96, East Ordsall Lane. Salford 5. ^ 3988 0 £7 gross of half-screen Candleshades in acetate and -h.p. Lister Vertical Single-cylinder Oil Engine, No. CS. parchment paper, good finish, for immediate 3 36281, radiator-cooled on combined baseplate, coupled delivery. £7 4s. per gross and tax.—Box 3991, c/o to 2.2-kVA. 230-volts, single-phase, 50-cycles dynamo. The Electrical Review. 1,500 r.p.m.. complete with switchboard, silencer and oil O Q and 28-s.w.g. Nickel/Chrome Resistance Wire, reason- fuel tank: little used. Capel Type 2 LEV Vertical Water- able quantities, immediate delivery.—Box 5069. c/o cooled Twin-cylinder Petrol Engine, direct coupled to The Electrical Review. 15-kW generator by Crompton. 230 volts D.C., 65 amps., h.p. “ Brittain ” 960-r.p.m. Squirrel Cage Motor for 750 r.p.m. 50-kW Diesel Generating Set. comprising • 415/3/50. with oil-immersed starter.—Thos. W. Fowler-Sanders totally enclosed vertical Diesel engine, Ward Limited. Lancaster Place. Strand, London. W.C.2. type 6 B.H., No. 2143. rated at 75 b.h.p. at 1.500 r.p.m., Telephone No. Temple Bar 9631. 3869 direct coupled by a flexible coupling to 50-kW. 480/240- 1 Unused Flat Top Bogie Trolleys, oak platforms. volts generator by Crompton Parkinson, 104 amps., con 5' X 3' x 15£" high, oak bearers, swivelling tinuous rated. No. F .122574. with oil-cooled static balancer, bogie with 36" drawbar: with 4 iron wheels, 11" dia., back of board shunt field regulator: a three-wire system £7 10s. each: with 4 solid rubber-tyred wheels, 12" dia., is obtained due to the static balancer; complete with air £10. delivered. Also 100 Unused Samson Type Trolleys filters, Burgess exhaust silencer, cooling tanks, fuel tanks, for machinery handling, oak. 22" x 17" x h \ " high, switchboard: engine is push-button start from 2 1 2 -volt. 4 iron wheels 3" dia. and central wheel 3£" dia., 70s. each, 100-amp. batteries: new 1941, and only run occasionally delivered. Inspection works, 40. Cuba Street. Millwall for periods of 2 hours for warming up. Two 36-kW (East 3958). — Reed Brothers (Engineering) Ltd., Bevis Diesel Generating Sets, comprising Paxman-Ricardo Marks House. London. E.C.3. 3752 type 4.RG cold start vertical four-cylinder Diesel engine. O fC fV kW Rotary Converters (2), with transformers and No. 1573, water-cooled with wet sump lubrication, horse switchgear. input 6.600 volts. 3-phase, 50 cycles, power 50/55 when running at 1.350 r.p.m.. combined output 420/210 volts; also A.C. and D.C. Motors. Switch baseplate and direct coupled to 36-kW Harland open type gear. Generating Sets. Welders, etc.—Midland Counties compound wound generator for 300 volts D.C. supply. Electrical Engineering Co. Ltd.. Grice, Street. Spon Lane. No. OX.1822/3. with shunt regulator: with switchboard W est Brom wich. 36 dated 1940; overhaul completed 20/12/43, and unused O A A amp. Oil Circuit Breaker with neutral link over- since: engines sold separately. 22-kW Diesel Generating Set. comprising Lister four-cylinder vertical cold start load trips and current transformers supply. 3/50/440. Brand new. Offers to—Box 5055, c/o The Diesel engine, No. 60/9399, 1,100 r.p.m.. direct coupled Electrical Review. on fabricated bedplate to 22-kW Mawdsley screen protected compound wound generator, dated 1941, for 200/153/112 Electric Motors. Dynamos, Transformers. Con- volts D.C., 0/152/203 amps., continuous rated, no switch verters. etc.. etc.. at low prices.—S. C. Bilsby. board; engine sold separately. 17-kW Diesel Generating A.M.I.C.E.. A.M.I.E.E., Crosswells Road. Langley, near Set. comprising Ruston & Hornsby totally enclosed ver Birmingham. Phone. Broadwell 1359. 21 tical four-cylinder water and radiator-cooled Diesel engine, CCQ/'Vvolt D.C. Motors, from 2 h.p. to 30 h.p. size 4, Class VSO. No. 194748, 27 h.p., direct coupled on t j f j y j Enquiries—Clerkenwell 3000—Ext. 19. 5013 combined baseplate to Lancashire Dynamo & Crypto 17- yards 19/17-s. Cable. 4-core, paper, lead covered kW, 480/240-volts. 35.5-amps, open protected continuous and tape armoured, very little used: can be seen rated generator, running at 1.000 r.p.m.. size D50A. working.—Box 3986. c/o The Electrical Review. No. 142516. dated 1938; complete with switchboard, fuel f iO O w' an(* 750'w- Spiral Elements, large quantities ex tank, etc.; very little used. Vickers Petters Four-cylinder AJV/V/ stock, competitive prices. 5d. & 6£d. each respec Vertical Diesel Engine, type c.84. giving 350 h.p. at 260 tively.—Middlesex Electron Co. Ltd. (Molesey 3541). 5068 r.p.m., starting by hot plug from battery of approximately good strong Crates, inside measurements 29" 25 volts and air blast from bottle charged at approximately x 9£" x 9|". i " thick, battened all round, 600 lb. per sq. inch: overall size approximately 16' x at Is. 9d. each, ex works.—K. Goldser & Sons. 14a. Rec 7' 6" x 9' high; can be seen running by appointment. tory Square. London, E.l (Tel. Stepney Green 2550). 75 Mobile Generating Set, comprising Mark 4 VPBE Ruston combined vertical Diesel engine, size 2. Class P.S.. Serial ART/CLES W ANTED No. 204990/P.12/14721, developing 80 b.h.p. at 1.000 A .C. and D.C. Motors and Transformers urgently r.p.m., with electric flywheel C /vl/180, self-starter single- wanted. Burnt-out machines acceptable.—Max stage vertical water-cooled air compressor combined with Electric Co. Ltd.. 190. Thomson Rd.. Croydon. 12 petrol-paraffin engine. C.I. silencer fixed close to engine A .C. Motors wanted urgently, all sizes and voltages. and Burgess silencer. Tachometer, duplicate lubricating Best prices offered.—John Phillips & Co. Electrics. and fuel oil filters. Engine direct coupled by flexible 31. Fortune Green Road. W. Hampstead (Hampstead coupling to 50-kW Mawdsley 230-volts, single-phase, 272- 8132). 127 amps. alternator. No. J.A.61001. with exciter, back of board type exciter rheostat. Engine and Alternator .C. Motors, i-3 h.p. Best prices paid. Burned-out mounted on a low loading trailer, fitted with road wheels A accepted.—Harrower. Auchtermuchty. Fife. 5044 with pneumatic tyres, fitted with hand lever brake, and BOUT Fluorescent Tubes, top prices paid. Any quan complete with hinged covers. Quantity Spares, practically A tity. 10" and 12" pencil elements. Anv electrical unused.—Thos. W. Ward Limited. Brettenham House. surplus, etc. Write—Adams, 114, Stroud Road, Shirley. Lancaster Place, Strand, W.C.2 (Temple Bar 9631). 3894 Warks. 5058 utLvm uer z u , 1^4(5 E l e c t r ic a l R e v ie w 69
A CETATE and other thermoplastic scrap; polythene /CAPACITY available for coll winding, impregnating. x*. and P.V.C. in any form; also scrap cable and in ^ engraving and light machine work.—Castlenau sulated wire; urgently wanted.—Elton Lew & Co. Ltd . Instruments Ltd., 50. Glentham Road. S.W.13. 37 18. St. Thomas Street. S.E.l. 30 RAPACITY available for light assembly, February. A NOTHKK machine could go into production if power ^ J March. Some machining. London area.—Box 91. was available. Move your surplus A.C. Motor stock c/o The Ejectrical Review. back into work. All types, makes and powers urgently T3ESIGN and Drawing Office Service for Electrical and wanted. We will repair and rewind if necessary. Write, ^ Mechanical Manufacturers. We have organised a stating price, etc., to—A. P. Watson, 104a. Upper Brook specialist service for manufacturers with accumulations of Street. Manchester. 13. 120 drawing office work and for small manufacturers not wish LEC. Motor. 20 to 25 h.p.. 200/230 v.. 1-phase.— ing to employ their own staff. For leading manufacturers E U.. 1023. Garratt Lane. S.W.17. Bal. 3351. 3828 and others we are designing equipment to their instruc NGINEERING Technical Books (new or secondhand) tions and producing workshop drawings, etc.. to their E wanted in any Quantity. Attractive cash oilers. Call system. May we help you in a similar manner?—Designs —Third tloor. 356, Oxford Street. W .l. or “ Stoneleigh." & Installations Ltd.. 163, High Street. Guildford (Tele St. George’s Avenue. W eybridge. 62 phone. Guildford 3919). (See our displayed advertisement LUE Bar Elements (Flat). 9" x 3". 1 kilo.; also 5 to in last week’s issue.) 48 F 15-amp. Switches. Large or small quantities. Offers 'p'NGINEERS. Precision. South England, seek manu- to—Supreme Electrical Manufacturers. 3. Downs Road. -L-J facture of electrical, mechanical or domestic Epsom. Surrey (Phone. Epsom 1358). 9712 assemblies or components. Press tools, gauges, small LUORESCENT Lamps, 5 ft., urgently required, any stampings, capstan turning, also Internal and External F quantity, best prices paid. Collected London area.— Grinding. Write—Box 74, c/o The Electrical Review. Box 111. c/o The Electrical Review. TNSTALLATION and Maintenance of Internal Tele- AMINATIONS. Large types required in any reason -1- phones—London company with branches in the L able quantities. T’s and U’s; also 75’s and 4A’s.— larger centres, would like to hear from reliable electrical Comercroft, Fallibroome Road. Macclesfield. 95 contractors, who are interested to undertake the installa T AMP Holders. 1UO to 10.000. porcelain theatre type. tion and maintenance of small internal telephone systems, Edison screw pattern, front and back fixing type, in Kent. Suffolk, Norfolk. Lincs. Leics. Notts, Derby. urgently required. Offers, quoting specification, quantity, Wales. Somerset, Devon. Cumberland. Westmorland. Isle price.—Box 3878. c/o The Electrical Review. of Man and Eire.—Box 4056. c/o The Electrical Review. ERCURY (Quicksilver) wanted. Write for packing "VTACHINING Work, for Centre Lathes up to 6* in. M instructions. Gold. Silver and Platinum also pur ^ centres and medium-sizfKl milling (good grade work chased.—Collingridge & Co. Ltd.. Riverside Works. River preferred).—The London Electric Firm, Croydon. Up side Road. Watford (Tel. 5963). 20 lands 4871. 56 A. M. R ose, of 19. Park Avenue. Old Trafford. Man- ll/rODERN factory of 15.000 sq. ft. one floor (London). S • Chester. 16. wishes to purchase Wire Drawing Advertisers with 30 years’ manufacturing experience, Machines for non-ferrous wire, suitable for 20 to 34 s.w.g. invite suggestions not affected by shortage of materials finishing on spools, also Spooling Machine, adjustable and where little or no machinery is required. Ample traverse. Diamond and Composition Die Polishing labour available. Min. turnover £50.000.—Box 4058. c/o Machinery. Interested in any other Wire Winding The Electrical Review. Machinery. Please give full particulars and price. 3873 1 3 ETIRED Electrical Contracts Engineer seeks work for EX 10/12-h.p. Motors. 400/440 v., 3-phase/50 cy.. home. Tracing, drawing or writing orders.—Box S squirrel cage protected or totally enclosed. 1.000 or 5070, c/o The Electrical Review. 1.500 r.p.m. Also one 7-h.p. motor, particulars as above. 1.000 r.p.m.—Box 4053, c/o The Electrical Review. QHOT Blasting and Metal Spraying. We are able to QTORAGE Battery. 110 volt. 150-200 ampere/hours. undertake the efficient and prompt handling of all State condition and price. — Ernest Doe & Sons. goods sent for treatment. Large capacity available. Ulting. Maldon. Essex. 3934 Enquiries to—Commercial Structures Ltd.. Staffa Works. VI/'ANTED. D.C. and A C. ball-bearing Motors. Full Staffa Road. E.10. 112 » ^ details to— Britannia Manufacturing Co. Ltd.. 22/26. AGENCIES Britannia Walk. London. N .I. 29 A GENCIES required for London. South of England, for ANTED. Rotary Converters, any size.—Universal. the following: (1) Domestic electrical appliances; W 221. City Road. London. E.C.l 22 (2) Brass electrical accessories, switch plugs, etc. : (3) Con W AN TED urgently. New or Secondhand Cable in good duit. Advertisers have clientele with every wholesaler in * * condition: 120 yds. .25 sq.in., 3-core P.I.L.C.S.W.A. the territory mentioned. Immediate turnover can be and Served Cable; 150yds. .1 sq.in..3-core P.I.L.C.S.W.A. guaranteed. Either commission or buying basis. Post and Served Cable.—Box 3781. c/o The Electrical Review. war arrangements considered.—Box 64. c/o The Elec -h.p., 230-v. A.C. or D.C. Motor.—Universal Electrical. trical Review. 1 221. City Road. London, E.C.l. 25 GENCIES required. South of England, including the 1 Rotary Convertor. 400 kW, 6-phase. 230 volts D.C.. to A London area; (a) Cables; (b) Small Switchgear; (c) transformer, preferably transformer at 400 volts with Transformers: or any lines suitable for distribution for star point brought out; 1 Rotary Convertor. D.C. 220 v.. wholesalers’ business.—Box 40. c/o The Electrical Review. A.C. 400 v.. 50 cycle, 3-phase.— W illiam Tatton & Co. XPERIENCED Sales Engineer with leading manu Ltd.. Upperhulme. nr. Leek. Staffs. 124 E facturer. free to take additional agency (London Q A Gauge Copper Wire, enamel, cotton, silk or rayon area).—Box 5037, c/o The Electrical Review. covered. Up to 56 lbs. Offers to—K. & L. Steel- ONDON company experienced in successful distribu founders & Engineers Ltd.. Letchworth. Herts. 4052 L tion of electrical products through wholesale trade IQ A -vd t D.C. Motors, i. 1 and 2 h.p.: 220-volt D.C. seeks sole representation for V.I.R. and P.V.C. Flexes ‘±O U Motors. J. £. 1 and 2 h.p., any speeds 900 to and Cables. Brass and Bakelite Accessories. Would con 1.500 r.p.m . Full details to— Industrial Electrical Co. sider Continental if import possible.—Box 81. c/o The Ltd.. Offord Street. London. N.I. 3777 Electrical Review. A n n kW Reciprocating or Turbine-driven Alternator. ANUFACTURERS’ Agents, covering the whole of U v U J 440 volts. 3-phase. 60 cycles, 150 lb. pressure. M Great Britain and Colonies, are desirous of contact 100° F. superheat: 1.200 kW ditto Set.—Box No. C.253. ing manufacturers with a view to sole selling rights (either Glovers Advertising, Mark Lane. Bristol. 1. 5050 commission or buying), post-war arrangements considered. —Box 23. c/o The Electrical Review. W ORK WANTED AND OFFERED 3/TANUFACruKING and Distributing Company, cover- A LL makes and kinds of Electrical and Radio Measuring ing the British Isles, and having important export Instruments repaired by skilled technicians. A.I.D. connections, are desirous of handling additional products approved. All work quoted by return without charge. suitable for the electrical, hardware and ironmongery Also for sale, large variety of Voltmeters, Ammeters. trades, preferably sole distributing rights. Substantial Milli-ammeters. 2 " and 2£" dials, reconditioned ex-Air contracts will be placed for suitable lines. Reply—Bn* Ministry stock .—W . O. Prescott Ltd.. D ept. A. 29-31. T.P.195. c/o Maurice Vernon Ltd.. 2. St. Andrew’s Hill. Cowcross St.. E .C .l (Tel. Cle. 6783). 96/0 Queen Victoria Street. E.C.4. 61 ARMATURE. Rotor and Stator Rewinds and Repairs; UALIFIED Electrical Engineer with highest references ^ fractionaf to 100 h.p. Prompt deliveries. T. A. Q requires agencies for Yorks.. E. Lancs.. Durham Rnvall b Co.. Horley. Surrey. Phone 654. 9H95 and Northumberland for Cables. Switchgear. Conduit. RISCOE Plating Co. Ltd. now have available capacity Domestic Appliances. Clocks. Scientific Electrical Appa B for Silver and Nickel Plating and quantity produc- ratus. Advertiser has personal contact with all large tion of Electrical and Household Product^ m which we buyers in the area. Immediate turnover guaranteed. are specialists. Enauiries invited to—3-5. Maddox Street. Commission or buying basis.—Box 5067, c/o The Elec trical Review. London, W .l. 70 E l e c t r i c a l R e v ie w December 20. 1946
TV/TANUFACTURERS’ Agents with offices London & PARTNERSHIPS South Coast, wish to hear of additional lines, in PENING occurs for Electrical Engineer or man with cluding cables and domestic appliances, for sale to corpor O electrical engineering knowledge suitable for con ations, wholesalers and retailers.—Box 9903, c/o The sultative work. Opportunity for investing approx. £2,000 Electrical Review. in progressive London firm with good contacts and T H E Vulcan Trading Co. Ltd. (subsidiary of European prospects. Directorship will be considered.—Box 5043. international concern), with offices in Bombay, Cal c/o The Electrical Review. cutta, Madras. Karachi, Lahore, Bareilly and Rangoon, desire agencies and invite offers from manufacturers and EDUCATIONAL NOTICES exporters of Electric Home Appliances, Radio. Fans, T^NGINEERING Careers and Qualifications. Both Irons, Toasters. Washing Machines, etc., Electrical Fit Government and industry have announced and tings, Cables, Roses, Wall Plugs, etc.. Rectifiers for emphasised that young men with technical knowledge battery charging. Cinema Arcs, Electric Plating, Electro- and qualifications must receive every chance of rising to Medical Appliances, Cycle Dynamo Lighting Sets. Replies the highest posts within their capacity in post-war to—V. T. C., c/o Messrs. Trummer & Co. Successors Ltd.. engineering and allied industry. Write to-day for " The 15. St. Helen’s Place. London. E.C.3. 3927 Engineer’s Guide to Success ”—200 courses— free—which ANTED, representation for whole of India, or a part gives particulars of the first-class training supplied by the T.I.G.B. for the A.M.I.E.E., A.M.Inst.C.E., W thereof, for Wires, Lamps, Accessories, Machines, A.M.I.Mech.E.. A.F.R.Ae.S., A.M.I.P.E., B.Sc.(Eng.), Appliances, Meters, Water Coolers, Radio, etc. Please contact with full information, terms of representation, C. & G.. etc., examinations in which T.I.G.B. home-study students have gained 44 first places and over 1,000 passes. with samples where necessary, with—The Prabhat Electric The Guide covers careers in all branches. Electrical, Syndicate Ltd., Jain Wadi, Manekchawk, Ahmedabad Mechanical. Radio, Aeronautical, etc.—The Technological (India). 5047 Institute of Great Britain, 35, Temple Bar House, London, ELL-known suppliers of Insulating Media require E.C.4. 77 W agent for Scotland to develop sales to electrical plant T ATEST A.M.I.E.E. Results. In the examinations held makers, electricity undertakings and larger industrial -U by the Institution of Electrical Engineers 646 can concerns.—Box 3769, c/o The Electrical Review. didates sat who had taken B.I.E.T. courses. Of these BUSINESS OPPORTUNITIES 620 were successful in passing the examinations. We believe OCEMCO Ltd., Fluorescent Lighting Specialists, wish to this record of 620 successes out of 646 entrants has never ^ contact manufacturers of electrical equipment and before been approached by any oral or correspondence accessories, including “ Novelty ” and “ Improved tutorial organisation, and indicates the very high efficiency appliances. Domestic fluorescent fittings and components of the modern system of technical training which we have of particular interest. When possible complete output will laid down. The B.I.E.T. tutorial organisation is waiting be taken, and full co-operation given in exchange for sole to assist you either with a short specialist course or com distribution rights. Replies will be treated with strictest plete training for a recognised examination. We have confidence.—Man. Director. Scemco Ltd.. Scemco House. available a large full-time staff of instructors, while the 6/7. Soho Street, London, W.l. 119 efficiency of our extensive organisation is a byword among engineers. We guarantee— “ No pass—no fee.” May we BUSINESS PREM ISES send a copy of "Engineering Opportunities’’? Containing ACTORY Extensions, Warehouses. Canteens, etc., a great deal of useful advice and detailed information on F erected complete. Plans and licence applications over 200 home-study courses and examinations, this hand prepared. Consult — The Universal Housing Co. Ltd.. book is of very real value to the ambitious engineer. Our Rickmansworth. 109 highly informative handbook will be sent free and without ARTLY vacant Freehold Factory, near main city obligation on request.—British Institute of Engineering P thoroughfare, 6,000 sq. ft. for sale—£25.000.—Box Technology (established 1927 — over 200.000 students), 4054, c/o The Electrical Review. 12. Shakespeare House, 17, 18 & 19, Stratford Place, Oxford Strpet. London. W .l. 33 MISCELLANEOUS LASTICS offers particularly good prospects to experi OHORTHAND Typists. Private Secretaries, Clerks, etc. P enced Engineers with a sound knowledge of Plastics ^ If you are in urgent need of staff, contact Embassy Technology. Authoritative home-study courses are now Secretarial Employment Bureau, Excel House, Whitcomb available in General Plastics and specialised branches of Street, W.C.2 (Whitehall 5924). We specialise in efficient the science. Full details of these courses and the prospects personnel. 90 in the rapidly expanding plastics industry will be found TT1HE Electrical Branch of Messrs. Parsons & Sons, 8-10, in our handbook “ Opportunities in Plastics ”—sent free Kings Road, Swanage, Dorset, will be re-opened in on request.—British Institute of Plastics Technology January. 1947, on the return from the Forces of their (Dept. 301), 17, Stratford Place, London, W.l. 3822 Mr. J. W. Parsons, A.M.I.E.E., who will be pleased to receive manufacturers’ and suppliers’ catalogues. 3893 BUSIN ESSES f-OH SALE AND WANTED T^LECTRICAL Contractor’s and Retailer’s Business, PATENT NOTICES Essex area, 40 miles London. Sound business, every ATENT Agents.—A. E. Hill, Chartered Patent Agent. investigation and trial encouraged. Good lease and posi P 27, Chancery Lane, London, W.C.2. Tele. Chancery tion. Turnover approx. £10.000; goodwill £3,000; approx. 8444. 88 S.A.V. £3,000.—Box 3922, c/o The Electrical Review. Vtotred by TIME..
Their high precision standard of manu facture has made TEMCO the most prized of all electric clocks.
Products of c ^ r ^ TELEPHONE MANUFACTURING CO., LTD. Marketed by T.M.C.-HARWELL (SALES) LTD., 233, SHAFTESBURY AVENUE, LONDON, W.C.2. Telephone : TEMple Bar 0055. D ecem ber 2 0 . 1 9 4 6 E l e c t r i c a l R e v ie w 71
COG-WHEEL BRAND PHOSPHOR BRONZE FO R Y O U R PRODUCTION &■ P L A N T The 50-range Model 7 Universal AvoMeter. MAINTENANCE
The AvoMeter is one of a useful range of Our latest abridged general Catalogue will tell you all “ Ato ” electrical testing instruments which about “COG-WHEEL Brand PHOSPHOR BRONZE and are maintaining the “ Avo ” reputation for ether NON-FERROUS ALLOYS, in Ingcts. Cast an unexcelled standard of accuracy ings. Rolled and Drawn Metal and Solid and Cored and dependability'—in fact, a standard Sicks cast by our special process. by which other instruments are judged. A copy will be sent you on request Sole Proprietors and Manufacturers : AUTOMATIC COIL W INDER & ELECTRICAL THE PHOSPHOR BRONZE CO.. LTD. WITTON • BIRMINGHAM • e. EQUIPM ENT CO. LTD..W inder House,Douglas Street, London, S.W .I. Phone : Victoria 3404-9
VSrley▼ REGD. TRADE MARK -■ COILS DETERMINE PERFORMANCE ★ ACCURACy ★ UN/FORM /Ty ★ REL/AB/L/Ty UTHOLITE INSULATORS & ★ SERVICE ST. ALBANS MOULDINGS LTD ★ COMPETITIVE PRICES The Varley Magnet Company D Ortnn ■ r nr- PROPRIETORS WATFORD OLIVER P ill CONTROL IT? •PHONE: WATFORD 4494 •Jeiephon&s. WOOLWICH 1422 CAMBRIDGE ROW WOOLWICH S E 18 72 Electrical Review D ecem ber 2 0 , 1 9 4 6 MOULDING THE FUTURE in the Electrical Field
Mouldings tor Industry. Moulding powders, liesins solid, powdered or in solution, for oil classes of bonding worh. In sulating varnishes Cements and lacquers. Anti-friction resins for fabric bearing s. Casting resins.
Capping cements. Paint resins.
Filling compounds. Sealing fluids.
4 Quar for wc mpire (M, Hi constn 'HE VERY
i o^ypittletn(pladict | | T full information & data from SALES DEVELOPMENT DEPT aBRIQ1 BIRKBVS LTD., L1VERSIDGE, YORKSHIRE ifione: Transformers fo r O v e r s e a s S e r v ic e A
A Q UARTER-CENTURY of specialised experience in the manufacture of transformers for world-wide service—including the four largest transformers in the British Empire (each 93,750 kVA, 3-phase)—provides a sound basis for confidence in the design and construction of HACKBRIDGE Transformers of all types and voltages, and up to THE VERY LARGEST SIZES. HACKBRIDGE TRANSFORMERS HACKBRIDGE ELECTRIC CONSTRUCTION CO. LTD., WALTON-ON-THAMES, SURREY Telephone : Walton-on-Thames 760 (8 lines). Telegrams : “ Electric," Walton-on-Thames 74 E l e c t r i c a l R e v ie w D ecem ber 2 0 , 1 946 Index to Advertisers PAGE Allen, Edgar, & Co. Ltd ...... 10 Arcolectric (Switches) Ltd ...... 108 Astor Boisselier & Lawrence Ltd ...... 34 Automatic Coil Winder & Elecl. Equipment Co. Ltd. 71 B ab cock & W ilcox L td ...... 52 Bakelite Ltd ...... 28 Barber & Colman Ltd ...... 109 Belling & Co. Ltd ...... 12 Belling & Lee Ltd ...... 109 Berry’s Electric L td ...... 54 Birch, H. A., & Co. Ltd ...... 18 Birkbys Ltd...... 72 British Electric Resistance Co. Ltd ...... 91 British Electronic Products Ltd...... 98 British Insulated Callender’s Cables Ltd...... 9 British K lockner Sw itchgear L td...... 112 British Thomson-Houston Co. Ltd C o v e r iv & 5 British Trane Co. Ltd...... 53 Brook Motors Ltd ...... 19 B u lpitt & Sons L td ...... 46 Burgess Mouldings Ltd ...... 93 C able M akers’ A sso cia tio n ...... ■...... 44 Carlisle Electrical Manufacturing Co. Ltd ...... 89 City Electrical Co ...... 76 Clarke, Chapman & Co. Ltd...... 104 Cohen, George, Sons & Co. Ltd ...... 75 Collins Electrical Ltd ...... 95 Connollys (Blackley) Ltd ...... 97 Constructors Ltd ...... 84 Cooke & Ferguson Ltd ...... 49 Cox-Walkers Ltd ...... 32 Cressall Manufacturing Co. Ltd ...... 24 Crofts (Engineers) Ltd ...... 82 These approved and certified Conduits and Fittings are Crompton Parkinson Ltd ...... 40 & 81 consistently reliable under the most arduous conditions Cryselco Ltd ...... 16 of service. You can specify none better. Daly (Condensers) Ltd...... 110 Dalyte Electrical Co. Ltd ...... 80 D avis & T im m ins L td ...... 112 H I L D I C K & H I L D I C K Dennis, G. P., Ltd ...... 91 W ALSALL TUBE WORKS Desoutter Bros. Ltd...... 21 Donovan Electrical Co. Ltd ...... 8 2 & 94 PLECK ROAD.WALSALL . WAHL.2f23. D orm an & Sm ith L td ...... 93 London Stores: 9 Howland Mews West. Howland St.. W.l. Phone: Museum 6225 Dowsing Co. (Electrical Manufacturers) Ltd ...... 28 Dryden, Thomas, & Sons Ltd ...... 104 DS Plugs Ltd ...... 78 Du Bois Co. Ltd...... 104 Dubilier Condenser Co. (1925) Ltd ...... 96 D u ratube & W ire L td ...... 22 Edison Swan Electric Co. Ltd ...... 25 Electric Construction Co. Ltd ...... 47 Electric Depot Ltd ...... 78 Electric Elements Co ...... 92 Electricity Services Ltd ...... 102 Elexcel Ltd ...... 17 Empire Rubber Co ...... 2 English Electric Co. Ltd ...... C o v e r i & 15 Enthoven, H. J., & Sons Ltd ...... 86 Erskine, Heap & Co. Ltd...... 23 Evershed & Vignoles Ltd...... 99 Ferguson, Pailin Ltd ...... 37 THE Ferranti Ltd ...... 11 & 111 F itter & P oulton L td ...... 106 Fractional H.P. Motors Ltd ...... 84 S ^ P General Cable Manufacturing Co. Ltd ...... 107 General Electric Co. Ltd ...... 38 & 58 f l o p u m p Gent & Co. Ltd...... 100 G.M. Engineering (Acton) Ltd ...... 20 G relco L td ...... 108 Hackbridge Electric Construction Co. Ltd ...... 73 Hampton Works (Stampings) Ltd ...... 24 CUMP Mopump for Harcourts Ltd ...... 92 O unwatering shallow Hart Accumulator Co. Ltd ...... 30 Heatrae Ltd ...... 1 small wells or sumps. Heayberd, F. C., & Co. Ltd ...... 57 Strongly constructed H edin L td...... 102 H en ley’s, W . T ., Telegraph W orks C o. L td ...... 13 unit prepared for Hewittic Electric Co. Ltd ...... 77 continuous service. Heys, Leonard ...... 98 H ildick & H ild ick ...... 74 Can be provided Igranic Electric Co. Ltd ...... 97 with float controlled Ismay, John, & Sons Ltd ...... 26 Johnson & Phillips Ltd ...... 88 automatic starting Jones, Samuel, & Co. Ltd ...... 32 and stopping switch K ettle’s ...... 98 Lancashire Dynamo & Crypto Ltd ...... 42 & 43 Legg (Industries) Ltd ...... C o v e r iii Rhodes, Brydon a Y ouatt Ltd. c » i o h o o h o r n c i, . (Continued on page 76) b t o c K p o r t 1«. Victoria »t«c£t. s.««i E n g la n d . December 20, 1946 E l e c t r i c a l R e v ie w
No! No! Armbruster! We said MODERN!
Prejudice against the word secondhand dies hard. There are still people who imagine it is a polite way of saying ‘ out of date ’. We invite such Doubting Thomases to inspect our stocks of MODERN SECONDHAND PLANT and MACHINERY. We assure them that to anything even approaching the out-of-date, we sternly refuse admittance. Our stocks include: Generating Sets, M otors, Sw itchgear, Transformers, Diesel Engines, Boilers, P u m p s, A ir Com pressors, Cranes, Locomotives, Machine Tools, Power Presses and Sheet Metal Working M achinery, Tracks and Wagons, T a n ks, Steel Sections, Tubes and Fittings, and virtually every kind of modern Secondhand Works’ Equipm ent. GEORGE COHEN’S for MODERN Secondhand PLANT AND MACHINERY
GEORGE COHEN, SONS & CO. LTD. ESTABLISHED 1834. WOOD LANE, LONDON, W.12 PHONE: SHEPHERDS BUSH 2070 & STANNINGLEY, NR. LEEDS. PHONE: PUDSEY 2241 and a! Birmingham, Newcastle, Belfast, Sheffield, Manchester, Glasgow, Swansea. Southampton, etc. 76 E l e c t r ic a l R e v ie w December 20, 1946 Index to Advertisers (Continued from page 74) p age Limit Engineering Co. Ltd ...... 91 Litholite Insulators & St. Albans Mouldings Ltd 71 Londex L td ...... 112 COIL WINDING London Transformer Products Lid ...... 30 Manganese Bronze & Brass Co. Ltd ...... 85 DUE TO THE COMPLETION OF Martindale Electric Co. L td ...... 55 LARGE WARTIME CONTRACTS Matterson Ltd ...... 94 McClure, David ...... 108 CAPACITY IS NOW AVAILABLE M.C.L. & Repetition Ltd ...... 1 Mek-Elek Engineering Ltd...... 100 f o r ALL TYPES o f W I N D I N G S Metropolitan-Vickers Electrical Co. Ltd ...... 41 & 48 Metway Electrical Industries Ltd ...... 34 Micalectric Ltd ...... 94 Midland Coil Winding Co. Ltd ...... 76 WE SPECIALIZE Midland Electric Manufacturing Co. Ltd ...... 45 Miller-Hepworth Ltd ...... 90 IN POWER TRANSFORMERS Mirrlees Watson Co. Ltd ...... 108 SO LENO ID S, C H O K E COILS, Etc., Etc. Morecambe Electrical Equipment Co. Ltd...... 82 Nevelin Electric Co. Ltd ...... C o v e r ii New Insulation Co. Ltd ...... 106 COILS WOUND TO SPECIFICATIO N Newman Industries Ltd...... 105 Northern Aluminium Co. Ltd ...... 35 o r D E S I C N E D t o m e e t y o u r Parsons, C. A., & Co. Ltd...... 29 PARTICULAR REQUIREMENTS. Partridge Wilson, E., & Co. Ltd ...... 39 Perkins, F., Ltd...... 6 GUARANTEED ACCURACY Permutit Co. Ltd...... 50 HIGHEST QUALITY MATERIALS AND EFFICIENT Phosphor Bronze Co. Ltd...... 71 Pinchin, Johnson & Co. Ltd...... 92 METHODS ENSURE A SOUND ELECTRICAL JOB Pitman, Sir Isaac, & Sons Ltd...... 26 PROMPT DELIVERIES Premier Electric Heaters Ltd ...... 14 Pultra L td ...... 22 Record Electrical Co. Ltd ...... 24 Rediffusion Ltd...... 8 THE MIDLAND COlOviNDING Co. Ltd. Rejafix Ltd...... 100 4 LANCASTER STREET, BIRMINGHAM Reyrolle, A., & Co. Ltd ...... 27 Rhodes, Brydon & Youatt Ltd ...... 74 AST. CROSS 1011. GRAMS: MIDCOIL, B'HAM Rich & Pattison (Birmingham) Ltd...... 84 Robinson, Lionel, & Co. Ltd ...... 106 Rockman Engineering Co. Ltd...... 98 COIL WINDING CONTRACTORS TO Romac Industries Ltd...... 24 THE ELECTRICAL INDUSTRY Ross Courtney & Co. Ltd...... 1 R otherham & Sons L td ...... 80 Rowlands Electrical Accessories Ltd ...... 87 Runbaken Electrical Products...... 112 Salter, G eorge, & C o . L td...... 102 Sanders, W. H ...... 104 iffîM M &saM ÊsÈM Sanders, Wm., & Co. (Wednesbury) Ltd ...... 101 Sangamo Weston Ltd ...... 54 Saxonia Electrical Wire Co. Ltd ...... 112 FLASH PROMPT D ELIVERIES Scophony Ltd ...... 90 LAMP CABLES Scott, Hugh J., & Co. (Belfast) Ltd ...... 32 OF Scottish Cables Ltd ...... 83 BULBS and Siemens Electric Lamps & Supplies Ltd...... 33 E.L.M.A FIRES, IRONS Simmonds Bros...... 86 Sm ith’s English C locks L td ...... 77 and AND FLEXI Solenoid Regulator Co ...... 80 AUTO BLES Standard Telephones & Cables Ltd...... 51 LAMPS TOASTERS Steatite Insulations Ltd ...... 102 Sternaw Co. Ltd ...... 106 244 TOTTENHAM COURT ROAD Stream-Line Filters Ltd ...... 94 Sturtevant Engineering Co. Ltd ...... 7 LONDON, W.l Sunvic Controls Ltd ...... 36 MUSeum S351 Established 1919 Taylor & Petters L td ...... C o v e r iii Telegraph Construction & Maintenance Co. Ltd 57 Telephone Manufacturing Co. Ltd ...... 34 Thew, Edward H., Ltd ...... 100 Tilling-Stevens Ltd ...... 28 T.M.C.-Harwell (Sales) Ltd ...... 70 T u fn ol L td ...... 79 Tullis Russell & Co. Ltd ...... 4 V actite W ire C o. L td ...... 90 Varley Magnet Co ...... 71 Vent-Axia Ltd ...... 26 Veritys Ltd ...... 31 & 55 Ward & Goldstone Ltd...... 56 Wardle Engineering Co. Ltd ...... C o v e r iii W ebber, J. M ., & C o. L td ...... 76 W eir, G . & J., L td ...... 86 West Insulating Co. Ltd ...... C o v e r iii Westinghouse Brake & Signal Co. Ltd ...... 103 Westminster Engineering Co. Ltd ...... 1 Wingrove & Rogers Ltd ...... 30 W olf, S., & C o. L td ...... 3 Woods of Colchester Ltd ...... 30 Yorkshire Electric Transformer Co. Ltd ...... 86 Zenith Electric Co. Ltd ...... 78 r December 20, 1946 E l e c t r ic a l R e v ie w (Supplement) 77
: NUMBER FOUR I The m m y Behind the Product
Turning Balance Wheels
In order to market high quality clocks and watches at prices able to compete with the imported article, it has teen necessary for the British manu facturer to produce individual components in mass quantities. This, in turn, demands the use of numbers of specialised machines and a high degree of labour specialisation. In the 30 integrated factories of the
S m ith ’s W a t c h ‘ Smith’ group, specialisation Laboratory C h e lte n h a m and mass production has been carried out to such an extent that they form a complete and almost self-contained clock
S m ith ’s A la rm and watch industry. Our Behind the entire range of Hewittic rectifiers, from the Clock Factory illustration shows a typical largest equipments, supplying some of the world s Sc o tla n d greatest electric railway and trolley bus systems, down to highly trained operator the multitude of Hewittic battery chargers, is over thirty years of specialised experience culm inating in the manu- turning balance wheels on an facture of the largest pumpless rectifier installation in automatic machine. the w orld. The illustrations show : — Sectric House L o n d o n A 1,800 kW double-tier pattern Hewittic rectifier, one of a number supplying the Buenos Aires Illustrated are a few of the 30 Smith Factories Western Railway System. A typical Hewittic rectifier supplying a large industrial D.C. load. A Hewittic floor-mounting pattern battery charger for the operation of electric vehicles. SM ITH CLOCKS
HEWITTIC ELECTRIC CO. LTD. c4cJ'faj m Fused Pluq and Socket 3 kw ~ 230v. 7A eü/lidqet H .R.C. 7uA euntk the o tç T łeccn d/ Announcement of DS Plugs Ltd., Manchester, London, Glasgow. ER IJ46 Cable Racks & Hangers REGISTERED ZENITH TRADE-MARK PHASE-SHIFTING TRANSFORMER 3-PH ASE 600 V A Particulars on request 0 SEND FOR « The ZENITH ELECTRIC CO. Ltd. LIST OF STANDARDISED SIZES Sole Makers ot the well-known ** Zenith ” Eleotrical Prodncts Zenith Works, Villiers Road, Willesden Green, London, N.W.2 Phone : Grams : THE ELECTRIC DEPOT LTD., PRITCHETT ST., BIRMlNBHAft WILIesden 4087-8-9 “ Voltaohm. Phone, London ” electrical Review (Supplement) 79 this is TUFNOL a material for engineers Angle Tufnol provides a convenient way of fixing two sheets of Tufnol at right angles to one another, and may be used as brackets or small right-angle parts. Like other forms of Tufnol — sheets, tubes, rods, bars and channels — it is light yet mechanically strong, it is a good electrical insulator, it resists corrosion and can be machined easily. Angle Tufnol is made in lengths of approximately 48'' and with sides of from x §" up to 5|- x 51" and thicknesses of from A" up to §". An ELLISON Product TUFNOL LTD PERRY BARR BIRMINGHAM 221 ® 80 (Supplement I E l e c t r i c a l R e v ie w December 20. 1946 S£imit switches ontad Collectors Other 3)eco produds T h e important part in s o m a n y Contact C o tS e c u *r C o la n s , Limit Switches, OverSead pi.r«* H f ' S , * “ 0", Collector Cquipiwnf, Wmcfi tim in g mechanisms has led . -— Limiting Mechanisms for Skip Hoists, Cranes, 2nd Mechanical demand for much g r e a t e r accuracy Handling Plants. than is afford ed by the 0 .1 Dash Pet method. M any e n g in e e r s have fo ^ p r o b l e m s completely answered iamitiiUf mechanisms by R o th e rh a m Time Lags. e “ accuracy and reliability THE DALYTE ELECTRICAL CO. LTD. WEST ROW. N. KENSMGTOK, LONDON. W.IB ingenious in Telephone : LADBROKE »66-7 struments are worthy pro duces of the famous House of Rotherham & Sons of Coventry. ELECTRIC Details of the various types av ailab le, CONTROL GEAR and also of Instrum ents, • INDUSTRIAL R e co r d i n g Clocks, • M A R IN E (to Liard 's Specification ) gladly' supplied on request. • FLAMEPROOF (Suxtan C e r t if ie d ) RESISTANCES, D.C. & A.C. STARTERS Catalogues sent on application S O N S LTD . ROTHERHAM SOLENOID REGULATOR CO. „ Tele. 4154 C O V E N T R Y . sin c e 17» 268 MOSELEY ROAD. BIRMINGHAM 12 PHfCJSlON MANUFACTURERS lender Acents : 94GMEBUNG SALS A EXPORT LTD. ABFORD HOUSE, WILTON RD, S.W.I Telephone : VICTO RIA 59S7-3 December 20. 1946 E l e c t r ic a l R e v ie w (Supplement) 81 I t w e n t w i t h t h e w i n d hen production depended on the wind, calm days were idle days. Yet even in these times of electrical power, continuous production from every section of the factory plant is still to be achieved. By pioneering improved designs in vital electrical plant—in motors, transformers, switchgear and cables, Crompton Parkinson Ltd. have dene a great deal to eliminate the windless hours from modem production. Their pioneering continues—and will continue—setting new standards—responding to new needs and always leading—always a little ahead o f their time. rom pton^Parkinson ^ ■ ■ LIMITED ( PLANT DIVISION ElECTIA BOUSE, V ICT0AI A EMBANKMENT ”: e, s LONDON. W.C.2 82 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 “MORECAMBE” Modern Stator Rotor Starters Modern Star Delta Starters for Slipring Motors Hand Operated One Handwheel Interlocked Control for Squirrel Cage Motors DESIGNROBUST COMPETITIVE PRICES REASONABLY DELIVERIES GOOD MORECAMBE ELECTRICAL EQUIPM ENT CO. LTD. WESTGATE WORKS, MORECAMBE Telephone 1414/5 Telegrams: “MEECO” FEWER BREAKDOWN^ WHEN YOU INSTAl * S A F U S E * COMBINED SWITCH O FUSES These well- known Dono van products have proved them selves in many large industrial in stallations all over Great FOB FOWBRS Britain. U P T O M H.P. RATIOS UP TO 4 T O I SUITABLE FOR ALL CLASSES Full details on OF H a c h i n e s request. RELIABILITY E Q U A L TO 30 Amp T.P, " Safuse ** S w itch STAN DARD V ROPE DRIVES DONOVANS THE DONOVAN ELECTRICAL C9 LT.° BIRMINGHAM. 9 ENGINEERS) > F=v e l e c t r i c a l e n g i n e e r s a n d stockholders . C R O FT S( LIMITED P h o n e - STECHtoao 2277 (PB.X.) Gr a m s -DONOVAN,Birmingham THORNBURY BRADFORD ______ENGLAND December 20, 1946 E lectrical Review (Supplement) 83 ¡«id s 10 84 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 RICH & PATTISON (B' h i m ) L T D . ELECTRICAL W HOLESALERS JAMAICA ROW phone : mid. 0 1 5 3 -4-5 BIRMINGHAM 5 GRAMS: "ANGEL,CH" 5 0 YEARS », SERVICE CABLE CONDU.T SWITCHGEAR LIGHTING EQUIPMENT ACCESSORIES AND EVERYTHING ELECTRICAL fracm o A.C. or D.C. UNIVERSAL FRACTIONAL H.P. MOTORS for every purpose Delivery of urgent priority orders as follows :— 1/15Oth—1/30th h.p. 6-7 weeks 1/20th—1'8th h.p. 7-8 weeks 6-2 5 0 volts FRACTIONAL H.P. MOTORS Ltd.. Rookery Way HENDON NW S COLIKDALE 8022-3 December 20, 1946 Electric al Review (Supplement) 85 'OILITE’ APPLICATIONS IN THE ELECTRICAL FIELD O I LITE S E L F - L U BRICATING BRONZE BEARINGS ‘Oilitc’ is in service on Electrical Equipment rotating at over 20,000 R .P .M and is approved fof 3,000 lbs. per sq. in. pressure when limited motion is involved. Sufficient lubricant is impregnated in the cellular structure o f ‘O ilitc’ to meet variations in speed, load and running conditions over a considerable range, but where necessary, additional lubrication can be embodied in the design. The limits o f accuracy are equal to the highest grade o f Machined Bearings, thus assuring interchangeability and case of assembly. THE MANGANESE BRONZE & BRASS CO. LTD HASDFORD WORKS, IPSW ICH telephone ipswich 2127 telegrams "bronze ipswich" 86 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 CONTROL CHOKES FOR FLUORESCENT TUBES NOW IN PRODUCTION ENQUIRIES INVITED SOLDER SIMMONDS BROS. A.I.D. APPRO VED BEDCOTE MILL, STOURBRIDGE H. J. ENTHOVEN & SONS LTD. T.lephone ■ STOURBRIDGE 57730 230 THORNTON ROAD, WEST CROYDON, SURREY LO N D O N : R. B. Whittiek, A.M.I.E.E. THOrnton H«ath 2442 Abford Mouse. W ilton Road, S .W .I. Telephone! VICTORIA 5957-8 Conversion to Oil Fuel— specify W eir Oil Fuel Pumps W rite for Oil Pump Catalogue GI.9 J' W Tcathcart : clascow : December 20, 1946 E l e c t r ic a l R e v ie w (Supplement) 87 L a n d of Hope and Glory I see her not dispirited, not weak, but well remembering that she has seen dark days before — indeed with a kind of instinct that she sees a little better in a cloudy‘day, and that in storm and battle and calamity she has a secret vigour and a pulse-like cannon ; I see her in her old age, not decrepit, but young, and still daring to believe in her power of endurance and expansion. Seeing this I say. All Hail ! Mother of Nations, Mother of Heroes. witK strength eqifil to the time. R. W. Emerson. REAL hucdbyQQWig L EARTHING IN SAFETY w ith NEON INDICATION f kN the new J. & P. oil immersed isolator gear an operator is given positive information—by three neon indication lamps—whether cables are alive from remote points or not. While the lamps glow, the cables are connected to a supply and it is unsafe to earth. When the lamps do not glow, the operator knows that he may safely open the gate interlock and discharge the cable by switching over to earth, as shown in the left-hand illustration above. Neon indication is not supplied as standard equipment but only against specification. The need for a safety device such as this is a matter for individual consideration—but, as ever, J. & P. have realised the need and are ready to satisfy it. The equipment illustrated is a ring main unit comprising Type “ A ” incoming isolators, with a Type “ AG16” air insulated, metal- clad, vertical isolation circuit-breaker unit. JOHNSON & PH ILL! PS LT D. ^CHARLTON , LONDON S.E.7 IhltncjU. tUt m m í tUt mu t* ÿuùÜh/f-- — December 20, 1946 E l e c t r i c a l R e v ie w (Supplement) 89 The MODERN Electrical Distribution Unit —neat—compact and easily expandable CEMDU CARLISLE ELECTRICAL MAINS DISTRIBUTION UNIT Much smarter than old-fashioned embodies everything — fuses, electrical installations, CEMDU switch and meter — neatly ar- makes the whole distribution ranged where they can be instantly system more accessible, as well as reached. easier to expend. Various arrangements of the Compactly housed in attractively CEMDU are available to meet any finished metal cases, the CEMDU particular requirement. Write for full details to the Sole Makers 5 ^ ^ ELECTRICAL MFG. CO. LTD. BENTCLIFFE WORKS, ECCLES, LANCS. Telephone : Eccles 1691/2/3/4 Telegrams : “ Carlectric, Eccles ” 90 i (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 Increase production, boost sales anil * cut lighting costs with the only completely streamlined self-contained Fluorescent. Fitting tn the world. Gives 360°of uninterrupted illumination—delivered complete for immediate installation—-to highest B.9 . Specifications. WIRES. TAPES & RODS - "j v-v .> „\"j • f 'r ■■'■ '/}’’’ TQ f". ■’ • : W^EÎECTRlE}fURiNÀCES' Miller-Hepworth Ltd., Lee St., Oldham, Lancs I EX ACT TO S P ECI FI CAT IO N r — LET US QUOTE YOU- f n s p e c t a t ★ S p e e d ! SEE W HAT IS HAPPENING ★ W ITHOUT STOPPING FAST RUNNING MACHINERY JL- By installing a Scophony Electronic Stroboscope detailed inspection of all moving parts can be made without slowing or stopping machines: or interfering with production in any way. The Stroboscope is a highly ■Jl sensitive instrument which arrests visual motion, thus allowing the effect of vibration, bounce and VACTITE w ear to be observed in all rotating and reciprocating mechanisms. J l. Such inspection saves sudden breakdowns and gives a truer appreciation of "cause and effect" in all types of m achinery. The Scophony Stroboscope is the wonder of this JL. mechanical age and no wise maintenance engineer can afford to be without one. It Is indispensable In mills, factories, garages, research laboratories, locom otion and a host of other places ★ —it’s another SCOPHONY PRODUCT WAVERLEY WORKS S c o p h o n y L t d . 75 ST. SIMON STREET WELLS SOMERSET SALFORD 3, LANCS. 36 VICTORIA ST., LONDON, S.W.l Telephone r A BBEY 4852 Telephone : BLACKFRIARS 9831 For scientific problems. Scophony is at your service Telegrams: VACTITIC, SALFORD Lftcem oer A ), 1^4 6 Electrical Review ( Supplement) 91 RESISTANCES Although present circumstances render it difficult for us to give our pre-war service to all customers we are still working in their interests. New materials and manufacturing processes which we are now using to increase output also contribute in large measure to improved perfor mance and reliability of our products. Thus, when normal times return, all users of Berco Resistances will benefit by our work to-day. THE BRITISH ELECTRIC RESISTANCE CO., LTD. QUEENSWAY, PONDERS END, MIDDLESEX telephone : HO W ARD 1492 Telegrams : " VITROHM, ENFIELD." R.3 ______ rnrT s SWITCHGEAR CHINERi SrtwW & snti««. jsja/idrtojfl** la br!«^,i Qiaeiod^eO E-S SPECIALISTS IN FUSES. DISTRIBUTION INIPHOO*“ BOARDS, SWITCH FUSES, SWITCH BOARDS. CONTROL PANELS. ETC. f t « #01 INDON,^ ritii T e l,: FLEM ING ROAD ,SPEKE, LIVERPOOLI9. Hunts Cross 1217/8 «fa#*1! LONDON OFFICE-ABFORD HOUSE. WILTON RD.. S.W.I Telephone : Victoria 5957/8 92 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 MINERVA ELECTRICAL I n s u l a t i n g STOVING VARNISHES (Natural Resin Type) Black and Clear STOVING VARNISHES (Synthetic Resin Type) Black and Clear THERMO-SETTING VARNISHES Black and Clear All Varnishes conform to AIR-DRYING VARNISHES ...... Black and Clear B.S. Specifications wherever applicable. CLOTH VARNISHES ...... Black and Clear SLEEVING VARNISHES ... Black, Clear and Colours CORE-PLATE VARNISHES {Storingand Air-drying) Black and Clear Please submit your problems to COPPER-WIRE ENAMELS ...... Black and Clear our Electrical INSULATING ACID AND HEAT-RESISTING ENAMELS ... All Colours VARNISH TECHNICAL CABLE LACQUERS ♦ MICA BONDING VARNISHES DEPARTMENT. COMPOUNDS PINCHIN JOHNSON 15 CLIFFORD STREET • LONDON • W .l Telephone: REGent 7471 ^ hmi p r e p a r e d fo r Shop W in d o w L ig h tin g LIMITED STOCKS AVAILABLE WRITE FOR " HARCORAY” BROCHURE ILLUSTRATING COMPLETE RANGE OF Wisirg REFLECTORS FOR SHOP, STORE AND SHOWCASE LIGHTING. llarcourls STANHOPE HOUSE, KEAN STREET, ALDWYCH, W.C.2. T e le p h o n e : T E M P L E B A R »671 '2/3. uecem oer ZU, 1946 E l e c t r i c a l R e v ie w (,Supplement) 93 * ~tke NEW cl/ÂbtiEmtô&u, “ • Dimensions only 7§" x 6-j" x 4¡¡’ • Power Lighting and Heating *‘ under one roof ” • Saving in wiring cost and space • Each row of fuses a separate unit • Each fuse in its own compartment • Conforms to B. S. S. 88 and 214 2 sizes — 4 way and 6 way. 30 A max. cap. ^ W rite for F.C. leaflet Announcement of Dorman & Smith Ltd.. Manchester, London, Glasgow ERIA 46 SPEEDY PR0D quick dery- 'Our organisation is equipped for the speedy production of high quality mouldings up to 8 ins. square —a compression process in conjunc tion with electronic pre-heating is used. 'Special facilities are available for the design and production of moulding dies to your own specification or samples. I £S a;e BURGESS MOULDINGS LTD., SAPCOTE, LEICESTERSHIRE 94 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 Companies, the The largest ^ °^ icai M_anufa^m^ bestta°Wof electricitV^1^ the and users of eh ^ empl°V ^ throughout iilter to r tranS- Stream -^1 o£ the oil over in s u la tin g sV/itc h 8ear f u l l y TT s * a StaSV S a a ^ atiC plants from 5 8 per hour. - -> c pUL« EARTBIHB CLIPS WITH M | C A « g m m B SPECIAL BITE AND CRIP INTO TUBE OR ARMOURING TRADING ESTATE N ote the tongue »'hich PONTYPRIDD, GLAM. ensures perfect and | permanent contact. MANUFACTURERS OF Easy to fix. Nuts cannot tum. All sizes HICA STAMPINGS and CUTTINGS from half to rw# inchea. THE FOR HEATING ELEMENTS DONOVAN ELECTRICAL CO. WASHERS, COMMUTATOR SEOMENTS, Etc. BIRMINGHAM 9. LTD. MICA CONDENSER PLATES ELECTRIC PULLEY BLOCK H Matterson Hoists are compact and efficient, require but little attention to keep them in 0 good condition, and are made throughout by men taking a pride in their job. They will not let you down. 1 S MATTERSON LIMITED Shawclough. Tel. 4194 Rochdale T Two-speed Hoists with instantly obtainable creeping speed are available S ' w e z u , l V 4 t ) mutr E l e c t r i c a l R e v i e w {Supplement) 9 5 REPAIRS • REWINDS • REDESIGNS COLLINS Collins Electrical Ltd. ead Office 11 j Clerkenwell Road London E C \ Central London Works 22 St. Albans Place Upper Street Islington N i IVest London Works a 9 dy 1 1 Feather stone Road Southall Phone Holborn 021 2-4 Canonbury 3227-8 J E k or Southall 0168 C E L -2 sazcell advertising 96 (Supplem ent) E l e c t r i c a l R e v ie w December ¿0, l y w DUBfLIER POWER FACTOR CORRECTION CAPACITORS Correct your low Power F a c to r Reduce your Power Bills Pay Substantial Dividends Increase your plant Efficiency Keep upkeep costs down Enables greater productive load from existing plant Pay for themselves in ashort tim e Occupy minimum floorspace Require no maintenance Are absolutely reliable In use throughout the W orld POWER FACTOR CORRECTION CONDENSER CO. (1925) ITD CAPACITORS Cubllier experts will investigate your Pow r Factor problems without ob'igation.______DUBILIER CONDENSER CO. (1925) LTD., DUCON WORKS, VICTORIA ROAD, NORTH ACTON, W.3 Phone: Acorn 2241 Grams: Hivoltcon, Phone, London Cables: Hivoltcon, London Marconi International Code Dg December 20, 1946 Electrical Review (Supplement) 97 RH 066b C o n t a c t o r Ty p e S t a r t e r s For A .C S ervice IGRANIC ELECTRIC CO. LTD. specialise in the manufacture of Contactor Type Starters for all types of Electric Motors for all classes of Service. Equip your electrically driven machine with the correct control gear to protect your motor and machine by specifying IGRANIC. Illustration shows typo 1080 Combined Stator and Rotor Starter. iG R Ä fllC IGRANIC ELECTRIC C?LTP m n w ' BEDFORD 6 LONDON 98 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 ..... ""....."mm.... il»""" i'"1...... These elegant electric table lamps are executed in Anodised Alu minium with Plastic beading. Supplied as standard in Pink and Black or Gold and Black (other colours on request). Completely Dimensions : wired with switch; each Base X 6±" separately packed in fancy box. H e ig h t 14" (Lamp shades are extra.) Trade terms and prices on request H o c lr m c m ENGINEERING Co. Ltd. 16-18 Russell Street, Manchester 1 Telephone: ARD 2672/3 Patent Applied fo r . . .AND MONEY TOO! KETTLE’S These days Electric Motors are hard to come KNIGHTRIDER STREET by — Protect them against Damage and MAIDSTONE Burn-out by installing in line the B.E.P PHASE-FAILURE RELAY, which ‘ switches WHOLESALERS TO off* immediately any phase of A.C. current fails or cuts-out. It’s a small, compact Unit, ELECTRICAL CONTRACTORS 6i"x4}"x3&" with a price of £3.15.0 . . . . AT PRESENT : KENT AND SUSSEX ONLY extremely reasonable in view of the complete safeguard it affords. Further details gladly supplied. L e o n a r d h e y s (ESTABLISH ED 1930 • W HOLESALE ONLY) • WELDING BLOWPIPES AND REQUISITES • ELECTRICAL WOODWORK • DOMESTIC ELECTRICAL APPLIANCES • NON-CMA CABLE, WIRE AND FLEXIBLES Prompt and Personal Service PHASE FAILURE RELAYS Contractors invited to write for lists to BRITISH ELECTRONIC PRODUCTS LTD. l Faraday House, HenrySt., BLACKPOOL/ Moxley Road, Bilston, Staffs. Tel. : Bilston 41238 December 20,1946 Electrical Review (Supplement) 99 f t , THE m o v i n g f i n g " She moving fonder writes; and, having writ, l l ’ lo v e S o n : nor a i t your piety nor wit S k J l Le it bacb to ca n cel Half- a line, IJor all your teart u/aih out a word o\ Otnar ~J^!tatfyam. EVERSHED & VIGNOLES LTD CHISWICK LONDON W 4 ELECTRICAL INDICATINC & RECORDING INSTRUMENTS When writing please mention D 5/68 I 100 (Supplement) E l e c t r ic a l R e v ie w December 20, 1946 TANGENT SIGNALLING EQUIPMENT for the Mining Industry (CERTIFIED BY H.M. MINES DEPARTMENT) % Many of the familiar ‘ Tangent’ electrical products are still hard to come by, but there are others, like the Fig. 2124 Certified, Battery Ringing Telephone, for which reasonable deliveries can be given. Users of Intrinsically safe equipment know the Fig. 2124 as a robust, reliable and efficient instrument built to stand ' Tangent' Certified Equipment includes : up to the most Bells, Relays, Pushes, arduous conditions Keys, Transformers, Switchboards, Shaft of service. g e n t s Signals, Delay Ringing LEICESTER Units Estąb. 1872 Manufacturers of Electrical Equipment since 1872 GENT & CO. LTD., Faraday Works, LEICESTER • LONDON : 47 VICTORIA STREET, S.W.I CLEAN, PERMANENT MARKING ON BAKELITE, METAL, GLASS, WOOD COMPONENT PARTS, Etc. ENGRAVED BRASS, CAST BRASS AND ALUMINIUM. ENAMELLED BRONZE AND CHEMICALLY ENGRAVED PLATES OF ALL TYPES IN ALL LANGUAGES MANU FACTURED BY THE EMPIRE'S LARGEST GENERAL ENGRAVERS. SAMPLES AND QUOTATIONS ON REQUEST. EDWARD H. THEW LIMITED 11 Dean Street Newcastle ^ on - Tyni LARGE OR SMALL ARTICLE8 OF ANY SHAPE PRINTED BY ONE SIMPLE MACHINE Adopted in place of engraving by many leading manufacturers REJAFIX LTD. MEK-ELEK Engineering Ltd* 17 Western Road, Mitcham, Surrey T e l. : W e lb e c k 197» & 5141 ijecem ber 20, 1946 E l e c t r ic a l R e v ie w (Supplement) 101 GREETINGS To all our friends — and sincere wishes that 1947 will bring the early return of normal manufacturing and trading conditions in the industry. SANDERS WEDNESBURY WM. SANDERS & CO. (WEDNESBURY) LTD.. WEDNESBURY, STAFFS. 102 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 INSULATORS and INSULATING BEADS Let us know your requirements in technical porcelain and high temperature insulators and we will be happy to assist In solving your problems 27 FARQUHAR ROAD Telephones : EDGBASTON EDGBASTON 3990 BIRMINGHAM 15 BEARWOOD 1736 STOCKROOMS- 2 9 UPPER HAGLEY ROAD, BEARWOOD, BIRMINGHAM 17 INVISAFLEX INDUSTRIAL LOCAL LIGHTING UNITS . \ \ i i t , 1OUST RIAL / c^UE EN Cio^ / 'ELECTRIC I HEATERS. S \ \ V \ « “ *»/ / / / / RESISTANCE u n it s . . _ orunwersajH ^ A o u g h o ^ cono!cui6ose KNIGHTON LANE, 6UCKHURST HILL, ESSEX ELECTRICITY SERVICES LTD- 86 CANNON ST. EX.4 SALTER SPRINGS GEO. SALTER & CO. LTD., WEST BROMWICH LV\VV\VVWVVVWVVV\\\\\VVVvWVVl\VvV\WWvWWVVWV M W 75 ł j -c l i k ic a ł R e v ie w (.Supplement) 103 T h e S w a n .. How often have you admired the swan as it glides smoothly across the lake ? But did you know that this graceful inhabitant of our waterways has an average life of 20 years and some have even reached 70 ? There is a lot to admire too in the Westinghouse metal rectifier and one o f its chief attributes also is its long and useful life. Many equipments have already been in continuous use for over 20 years and show no signs of falling off in output. One thing is certain— there are no more reliable rectifiers than WESTINGHOUSE METAL RECTIFIERS WESTINGHOUSE BRAKE & SIGNAL CO. LTD. 8 2 YORK WAY. KING'S CROSS, LONDON, N.l J 1 0 4 (Supplement) E l e c t r i c a l k e v i e w uecem oer ¿\j, i CLARKE, DUBOIS ■PIUS' ACTIVATED CHAPMAN M S iN C O M P SOLDER Ł P .0 . and AIR MINISTRY APPROVED BOILERS • NOW AVAILABLE IN 60/40 ALLOY' • ORDER NOW AND BE SURE OF YOUR SUPPLIES • SPECIAL TERMS FOR WHOLESALERS Supplied on lib., 4 lb.. 7 lb., 10 lb. The DU BOIS CO. Ltd. 15, BRITANNIA STREET • KING’S CROSS ■ W.C.1. rrafco 6624/5 • Ttfefroau i Reftr** Imcroa, London i 1 I C T R I C RADIATORS POR WARMTH r" ^ r p h o n e PKiST on Arrangement of one of two Thés DRYDEN t Sons lt d .« / / Clarke, Chapman Tri-drum Watertube Boilers. G.G.C. DEVELOPMENT CO. Evap oratio n - 120,000 lbs. hr. W o rk in g Pressure 300 lbs. sq. in. INDUSTRIAL ELECTRONIC ENGINEERS Heating Surface - 12,000 sq. ft. Designers of Process and Delay Timing Apparatus, Precision Measurement of Time Intervals, Electronic Relays and Photocell Units, Machine Tool Control by CLARKE, CHAPMAN & CO. LTD. Electrical and Electronic means. VICTORIA WORKS, GATESHEAD 8, Co. DURHAM All enquiries to sole Manufacturers and Distributors TEL i 72271 (6 LINES) - GRAMS: ‘CYCLOPS’ GATESHEAD W. H. SANDERS London Office : 112/113 Fenchurch Street, London, E.C.3 Bedwell Lane, Stevenage, Herts Tel.: Royal 2737/8. Tel. Address: *Cyclops * Fen, London P h o n e : Stevenage 517/8/9 1 0 6 ( Supplem ent) E l e c t r i c a l R e v ie w u ecem oer ¿ u , i B-55555555555-55555555555555555555555555555555555555555555555555555 PRESSED STEEL SCREWED FITTINGS Flexible M etallic T u b in g CONDUIT FITTINGS FITTER cPOULTON ltd STERNAW COMPANY VINCENT PARADE BALSALL HEATH 425 Upper Richmond R d ., East Sheen, London,S.W .14 Ref. GB .180 BIRMINGHAM 12 Telephone: Prospect 7287/8 111 im I * M A L I fied. Impregnated Insulating Material Outstanding for S T R E N G T H 0 • « l C C f ft I c CONCrAu* ... T « N S I i f 28000 p.j.t Wrlte'for Data Booklet 24B, giving Eleotrioal and Physical Properties and Meohanloal Charaoteristios of this extremely useful material to th e N E W INSULATION CO. LTD. Gloucester (Eng.) Telephone 4941 i^L-cc r r iu e r ZU , 1V 4 6 Electrical Review ( Supplem ent) 1 0 7 NO n INNER AT EiOUT % The Brown’s cook by electricity — but not tonight. Something’s gone wrong . . . it might be a fuse or an element, or even the power station, but surely not the cables! Electric cables are built into walls and forgotten. T hat’s what General Cables remember. They make cables, all kinds of cables, to carry electricity, and to go on carrying it for many years without letting your client down. GOOD CABLES TO-DAY REDUCE TROUBLE TOMORROW GENERAL CABLES r. > GENERAL CABLE Telephone: Leatherhead 3021-4 MANUFACTURING CO., LTD. Telegrams: "Isolde,” Leatherhead LEATHERHEAD, SURREY General Cables are supplied through the leading wholesalers 108 (Supplement) E l e c t r i c a l R e v ie w D ecem ber 2 0 , 1 * 4 0 MODERN POWER STATION EQUIPMENT EVAPORATORS AND DE-AERATORS LOW AND HIGH PRESSURE HEATERS STEAM EJECTOR AIR PUMPS CONDENSATE EXTRACTION AND CIRCULATING WATER PUMPS TWIN SHELL SURFACE TYPE CONDENSER ÎSÎ1PAKY UMTL2 ENGINEERS GLASGOW ARCOLECTRIC Signal or Pilot Grelco La m p h o ld e r Standard M.E.S. and TERMINAL BLOCKS S.E.S. Fitting. Trans Best quality, black bakelite, Terminal lucent and Transpar Blocks or Connectors. Used extensively ent Plastic Lenses for telephones, telegraphs, radio, bells, signals, relays, traffic signals, etc., 2, 3, 4, 5, 6, 8, 10 and 12 w ay in Red, Green, White, Four T ypes Orange and Clear. Fully illustrated descriptive Folder on application ARCOLECTRIC (SWITCHES) LTD G RELCO Ltd., Grelco Works. Hopcott. Minehead,Somerset EDWIN ROAD. TWICKENHAM DAVID McCLURE MERSEY DYNAMO WORKS, STOCKPORT Telephone : Telegrams : Stockport 2653 4 ” Motors, Stockport " D . C . MOTORS, GENERATORS FOR COMPRESSORS. CRANES. HOISTS. PUMPS, MACHINE TOOLS. Etc. Lighting Sets tor Ships' Auxiliaries, Anodising and Plating, M.G. Sets London Office: City H ou», 158 City Road, LONDON, E.C.I CLErk«w.7lV»3/4 "TrlborlfploTi London” December 2 0 , 1 9 4 6 E l e c t r ic AL R e v ie w ( Supplem ent) 1 0 9 Off the cuti assembly costsf SHELF! cuts production time/ cuts its own S T A N D A R D H A C H I ¡V E SCREW THREAD Safety PA N EL FUSEHOLDER W ILL BE FOUND VERY USEFUL FOR FIXING A FUSE BEHIND A PANEL AND YET RETAIN ACCESSIBILITY Moulded in bakelite, single hole fixing, insulated from panel, coin slot in carrier, solder spill provided, EXC EPT IO N A LLY L O W RESISTANCE, Standard with l£" I amp fuse or as required. L.356 Price each 3/6 COMPLIES WITH B.S.S. 646 TRADE MARK No. 8611535 up to 5 amps at 250 volts A.C. Known THREAD-CUTTING SCREWS to be used with 20 amps at 25 volts British Patents Nos. 386083, 386895, 495194, _ r c * i 495252 and 496445 Delivery from Stock BARBER & COLMAN LTD., MARSLAND ROAD BROOKLANDS MANCHESTER BELLING & LEE LTD TEL.SALE 2277(3 LINES) GRAMS.“ BARCOL"SALE CAMBRIDGE A DTE DIAL DOAD. ENFIELD. MIDDX 11 0 (Supplement) E l e c t r i c a l R e v ie w December 20, 1946 Elect ytics for all S t a r t o s e s jecjuiliation \llw; ro ces the best. It is because DAL aeture imly electrolytic conden; r s that their world-wide reputation in he electrical field stands so high. DALY build for all el 1 C 1 require- ments and welcome culp electro- lytic problems, pridmg'themselves on the flexibility o i s k s ^ c organisation and ability to supply special type^ ^ GENERAL TYPES — TYPE NO. CAPACITY V O L T S (R.M.I.) P.M. 12/6 80 MFD 110 V. ^ P.M. 45/6 60 MFD \ P.M. 49/6 100 MFD P .M . 51/6 130 M FD „ P.M. 52/6 150 MFD ,, P.M . 55/6 200 M FD P.M. 45/8 60 MFD 240 V. J T Y P E NO. P.M. 12/8 30 MFD P.M. 4,/B P.M. 9/8 20 MFD \\ P.M. 41/8 50 MFD DALY (CONDENSER^f LTD West Lodge Works, The Green, Ealing, London Phone: Ealing 4841. December 20, 1946 E l e c t r ic a l R e v ie w (Supplement) ] 11 CLIP-ON AMMETER Seven ranges in one instrument • Thumb-operated switch • Fully insulated • Accuracy within 3% of full scale • Can be applied to bare or insulated RANGES : conductors up to 0-10 Amps. 2|ins. diameter 0-25 Amps. • Weight ... 3 lbs. 0-50 Amps. 0-100 Amps 0-250 Am ps Write for List In. 17a 0-500 Amps 0-1000 Amps FERRANT LTD FI. 62 FERRANTI LTD., HOLLINWOOD, LANCS. London Office: KERN HOUSE, KINGSWAY, W.C.2. I 12 (Supplement) E l e c t r ic a l R e v ie w December 20, 1946 Recharged at home fror your mains. No batter required. Several hour continuous ligh Thousands in use. Full guaranteed. The “ Kin of Pocket Lam ps.” Dire< or from Dealers. Sen for interesting Leaflet Q50 R E G IS T E R E D No. 6 2 0 .0 6 9 IN5UL0TED IN5TRUMENT WlRE5 PLQJN ^ENQMELLED H. C. COPPER 5TRQND5 i 25 A M P. TRIPLE-PO LE fo ON-OFF SWITCH LONDEX RELAYS R E L A Y L Q A approved by the Other Products : AUTOMATIC G.P. O. FLUSH STARTERS M O U N T IN G LIMIT SWITCHES Ask for Leaflet CONTACTORS TYPE PE253B 2051ER OVERLOADS British Klockner Switchgear Ltd. LONDEX LTD S Y D enham MANUFACTURERS OF RELAYS 6258-9 Chertsey, Surrey. Pbone: Chsrtaej 2221/8. 207 ANERLEY ROAD LONDON S.E.20 iii INSTRUMENT WIRES INSULATING MATERIALS EN A M ELLED , S IL K and COTTON covered Copper Wires, Single or Stranded, also Tinned, Paper, Asbestos and Plastic Westotlex covered. R ESISTA N CE W IRES. L IT Z W IRES. MICA, MICAN.'TE and B A K E L IT E in all forms. Heat Resisting Boards. Canvasite for Silent Gears. Oil Cloth, Silk and Paper. Slot Insulations. Insulating Varnishes. Varnished Fabric and Plastic Sleeving. Moulded and Machined Pieces, etc. WEST INSULATING COMPANY LTD. 2 Abbey Orchard Street, Westminster, S.W.I HORIZONTAL OR VERTICAL MOUNTING FOR LARGE BSS WARDLE CONDUIT BOX. WARDLE ENGINEERING CO. LTD. OLD TRAFFORD. MANCHESTER 16. LONDON 34 VICTORIA STRECT, S.W.I. f o f ^ MICA AND MICANITE BATTERY CHARGERS INSULATORS______RECTIFYING EQUIPMENT TRANSFORMERS Precision Gauged and Stamped ■ j (I INDUJTRIEjlINDU JTRIEJI LTD.l t d . Condenser Plates Radio Valve Spacers, etc. ^WILLIAMJON JT. T A Y L O R & P ET T ER S LTD.3-11 W E S T L A N D PLA C E.N . I k WOLVERHAMPTON 2 4 0*9 I * A Insulation Engineers Tel. : Clerk. 4105 "I RECKON IT WILL PAY TWICE OVER A WELL-PLANNED and executed LIGHTING All concern- ADVISORY ei wuh ,he ^ lighting scheme pays dividends in two cP n V , rF installation or renewal of directions. Employees visibly respond to lighting are invited to com municate with our Lighting Advisory Service , B r i d l e better seeing conditions — suffer less P a t h , W atford. Telephone : W a t f o r d 7701-08 fatigue, work more accurately, more cheer fully. The sub-conscious effect on customers is reflected in increased sales. LAMPS IN FITTINGS The British Thomson-Houston Co. Ltd. Crown House, AJdwych, London, W.C.2. Printed in Great Britain at T h e Ch a p e l R iv e r P r e s s , Andover, Hants, and published by E l ec t r ic a l R e v ie w , L im it e d , at Dorset nouse, Stamford Street, London, S.E.l.