E i M hktc'aj. E e v ie w , j a k i ary I l’t u , lo i . r . S S I M s MANUFACTURERS’ ACTIVITIES

Vol. CXXXVI. No. 3503 JA N U A R Y 12, 1945 9d. W E E K L Y

Advt. oj The General Electric Co., Ltd. Head Office : Magnet House, Kingsway, London. W.C 2 E lectrical Review January 1 2 , 1945 E KM

copper for the machinist

E H ¡11 ffjg ffz/jitJe iJ machining copper smashes bottle-necks; it was designed to do the difficult easily; as against ordinary H.C. copper it will increase your machine output by at least .300% • it will reduce your tool costs • it gives you a cleaner and more accurate finish • its electrical conductivity is 98% I.A.C.S. • it withstands temperatures I00-I509C. higher than H.C. copper • may we send you our technical leaflet about this alloy? niield oiling ills Ltd

Greenwood X.4 January 12, 1945 E l f c t iu c a l R f v ie w

The positive—in all items of life (including Electrical prac­ tice) would be valueless with­ out the negative. Both must oppose each other. W ithout difficulties by “ negative^” forces, “ positive ” advance­ ment in design could never record increasing improve­ ment. For it is the overcoming of existing difficulties that measures the pace of progress.

LEADERS IN ELECTRIC WATER HEATING

HEATRAE LTD., NORWICH PHONE : NORWICH 25131 GRAMS : HEATRAE, NORWICH

W E MAKE TAG TERMINALS ELECTRIC WELDING MACHINES S P O T, SEAM AND BUTT FOR WIRELESS WELDERS AND S I M I L A R A WIDE RANGE OF 35 ytart' .aperient« ' CONNECTIONS SIZES IN STOCK

Automatic or Non- ROSS COU RTN EY & Co. Ltd. Automatic ASHBROOK ROAD, LO N D O N , N.I9 with or without Electric Ooatrol

Tia quickest and moat economical method of Welding Oil Drumt, Bart, Tyree, Wheal Rlmt, GLANDS II kVA Spot W elder 1 Angles Th. WESTMINSTER ENG. Co. L * Victoria Road, Willetden Junction, N.W.IO Dynamoi, Motor*, Alternator* and Transformers Rewound and Re-conitructod. “ Westminster ” Brush Holders. Process Arc Lamps Telephone: Telegram»: Willetden 1700-1 “ Regency y Phene, London**

A 2 E l e c t r ic a l R e v i e w Januar y 12, 1945 Crompton Short-Circuit Testing Station

. . . behind Crompton Switchgear.

The Crompton Short-Circuit Testing in strict accordance with the appropriate Station issues certificates of performance standards and to produce more severe for ratings up to 350 mVA at llkV, and 75 conditions than are likely to arise in service. mVA at 400 volts, through the Association of The rated performance and dependable Short-Circuit Testing Authorities of which operation of Crompton Switchgear is thus Crompton Parkinson are members. assured. Crompton Switchgear is made The Station has been designed to provide tests for ratings up to 350 mVA.

CRomPTon PRRKinson limited

ELECTRA HOUSE. VICTORIA EMBANKMENT, LONDON, W.C. 2 . a n d Branches J(limary 12, 1945 E l e c t r ic a l R e v ie w 3 BEN7AMJN LIGHTING DATA

EACH TYPE OF BENJAMIN REFLECTOR PROVIDES A PARTICULAR LIGHT DISTRIBUTION

Each reflector is made for use with a particular size and type of lamp and 1 R. L. M.—for dispersive it provides a particular distribution of lighting the light. Much thought has been 2 HIGH BAY — for con­ given to compiling a suitable range, centrating lighting careful design and experiment pro­ 3 PARABOLIC^ ANGLE duced theunitsandconstant laboratory —for side lighting check ensures that performance is 4 INTENSOLUX — for supplementary maintained. lighting These are some filament reflectors; in 5 STOCK BIN—for storage due course we shall have a range racks for fluorescent tubular lamps for all 6 DUOFLUX—for out­ purposes. door areas Copies of the other sheets of this series will ★ gladly be sent on request BEN 7 AMJN THE BENJAMIN ELECTRIC LTD. Brantwood Works, Tottenham, LON D ON , N.I7 Telegrams : Telephone : 44 Benjalect, Southtot, London ” Tottenham 5252 (5 lines)

LIGHTING APPLICATION BY BENJAMIN ENGINEERS 4 E l e c t r i c a l R e v i e w January 1 2 . 1

HEENAN & FROUDE LIMITED ENGINEERS WORCESTER ENGLAND January 12, 1945 E l e c t r ic a l R e v ie w 5

A 8 /4 3

S n S (( The best of prophets o f the future is the

pasty —B y r o n

B eh in d Alton stationary bat­ teries stands a great tradition of painstaking effort and progressive improvement. To-day the result is reflected by the high standard of performance of Alton batteries in Power Houses, Telephone Exchanges and Broad­ casting Stations. Because Alton practice is rooted in such fine tradition, to-morrow Alton batteries will be chosen for the maintenance of power supply in vital installations.

ALTON BATTERIES OF MERIT

THE ALTON BATTERY CO. LTD. (Sole Suppliers of FULLER Stationary Batteries) ALTON, HANTS. Telephone : Alton 2267 and 2268 Telegram s•' ‘ Bat tery y A lton ’ E l e c t r i c a l R e v ie w January 12, 194;

T H E BEST IN SERVICE Standard Telephones and Cables Limited ______NEW SOUTHGATE, LONDON. N.ll January 12, 1945 E l e c t r i c a l R e v ie w 7

S tu rtevant T.L Cyclone on a rotary dryer

The Sturtevant T.L. Cyclone Dust Collector solves many Industrial Dust Problems • The salvage of processing losses • Collecting the dust caused in machining processes or material handling plant • Collecting the dust from chemical plant and metallurgical furnaces • Cleaning gases from stoker fired boilers Full details are in our post free publication U .II6I St u r t e v a n t E n g in e e r in g Co. Lt d . 2 5 .W 0 R CESTEft ROAI). SUTTO N , Sl'R R IY.

TtLfcPHONE: VIGILANT 2275 8 E l e c t r i c a l R e v ie w January 12, 1945 January 12, 1945 E l e c t r ic a l R e v ie w 9 January 12, 1945 10 E l e c t r ic a l R e v ie w

T H t

LID ON IT !"

Apart from their other famous insulating materials M. & I. are supplying more and more P.V.C. extruded sleevings and, so far as Messrs. Volt and Amp and Mr. and Mrs. Watt are concerned, they’ve properly put the lid on it with P.V.C. injection mouldings which can be made for such a wide range of electrical applications. A typical injection moulding and examples of extruded sleevings are shown above and we’re always ready ‘to supply full information to people who must keep electricity in its proper place.

MICOFLEX-DURATUBE EXTRUDED SLEEVINGS (P.V.C.) (Manufactured by Duratube & Wire Ltd.) and KENUTUF INJECTION MOULDINGS (P.V.C.) 1 (Manufactured by J. F. Kenure Ltd.) Distributors: THE MICANITE & INSULATORS CO. LTD., EMPIRE WORKS, BLACKHORSE LANE, LONDON, E.I7

Makers of M IC ANITE (Built-up Mica insulation). Fabricated and Processed M ICA , P A X O L IN (Synthetic-resin laminated sheets, rods, tubes and cylinders). High-voltage Bushings and Terminals for indoor and outdoor use. Empire varnished Insulating Cloths and Topes and all other forms of Electrical Insulation. Suppliers of vulcanised Fibre, Leatheroid, Presspahn. etc. Distributors of Micoftex-Du-atube Sleevings and Kenutuf Mouldings (P.V.C.) January 12, 1945 E lectrical Review 11

H H | POLYPHASE METERING FERRANTI

A scientific and practical recognition of the require­ ments of the USER and the NATION. Its compactness conserves material resources. Bif ALL meant am ebve m atetial

FERRANTI LTD., HOLLINWOOD, LANCS. London Office: Kern House, Kingsway. W.C.2. FM 79 E l e c t r ic a l R e v ie w January 1 2 , 1 9 4 5

V t S K R t N G S

CLOSE-UPS

Ask the service man which “VISKR1INGS” advantage he most appreciates and he’d have a job to ehoose. The swift identification by colour and wording. The knowledge that being impervious to oils and petroleum they will come out in just the same condition as they went in. The fact that having originally been fitted by shrinkage the diameter of the cable is not increased. These advantages and many more, have contributed to the enormous popularity of “VISKRINGS” Cable markers.

• NO TOOLS REQUIRED •INDELIBLY PRINTED • N O RUBBER USED • SELF FIXING BY SHRINKAGE • IMPERISHABLE, IMPERVIOUS TO • DO NOT INCREASE DIAMETER OILS AND PETROLEUM OF ( A B L E

CABLE MARKERS

VISCOSE DEVELOPMENT CO. LTD. ^/Vojdham Road, Bromley, Kent. ‘Phone : Ravensbourne 2641 January 12, 1945 E l e c t r ic a l R e v ie w

T h i s impressive view of one o f B o m b ay ’s leading spinning and weaving mills shows a battery of Ring Spinning Frames. Each of these machines is individually powered by a Crompton Parkinson “ Klosd Textork” squirrel-cage induc­ tion motor, driving through Fenner multiple V-ropes, and each of these m otors is, in turn, protectively controlled by a Crabtree “ direct-on-line” automatic starter, fitted with conduit entry box and special ammeter attachment. -

Crabtree Distributors in India Greaves Cotton’and ThelCrompton Engineering Crompton Parkinson, Ltd., Co. (Madras) Ltd. 1 Forbes Street, Bombay] 2nd Line Beach, Madras CRABTREE NAME • SYNONYMOUS • W111I - ERoOKESS • IN • ACCESSORIES - A NO • S WITCH OF. A R I

"Crabtree” (Registered) C.681/2. Advt. ofJ.A. Crabtree & Co. Ltd., Walsall, England 14 E l e c t r ic a l R e v ie w January 12, 1945

ARDING e f l a t t e n s

Electric POWER is a mighty sinew of the nation’s effort. It must be GUARDED against leakage. Tullis Russell Rothmill Cable Insulating Papers are called upon by leading cable manu­ facturers to perform this task, and it is carried out admirably by these renowned, uniformly high-quality insulating papers. Rothmill Papers are guaran­ teed free from metals and grit. W rite for details of the com plete range.

R O T H m i L L « CABLE INSULATING PAPER

~JulUt O u tsell rC o.itd. Auchmuty & R o .h ^ P a p ,, Matkinch,

LONDON MANCHESTER 1 Tudor St., 372 Corn ExdtAnp^. BIHMINGHAM EUJ.4 Bides.. Coroor*Qonf5t 119 Colmore Ja n u a ry 12, 1945 Electrical Review 15 ‘ ENGLISH ELECTRIC* HIGH-BREAKING-CAPACITY • HIGH-VOLTAGE

SWITCHGEAR

T Y P E OB33 FOR VOLTAGES UP TO3-3kV.

Six-panel, truck-type Switchboard, embodying 3-3kV. 400A, I SO MVA Air Circuit-breakers, Type 08 33, with one moving portion withdrawn.

'English Electric' Switchgear, Type OB 33 is particularly suitable for use on high- voltage circuits with breaking-capacities up to 150 MVA, at 3-3kV.

IMPORTANT FEATURES * Elimination of oil fire risk. * High-pressure silver-faced butt contacts. * Non-pitting arcing contacts. * De-ionising arc splitters. * Electrical operation, manual if desired. * Truck, or fixed cubicle mounting, with fully interlocked isolation.

ENGLISH ELECTRIC Larger view of a moving portion. COMPANY LIMITED • • STAFFORD • • E l e c t r i c a i R e v i e w Ja n u a ry 12, 1945 16

by THE GALVANAX PROCESS

is approved by the A.I.D. when a zinc coating is specified as a substi­ tute for Cadmium plating owing to a shortage of the latter metal. For fast deposits on wrought iron and steel it is unequalled in colour, simple to operate, and has excellent throwing power besides providing efficient protection from rust.

6REAT HAMPTON STREET BIRMIHGHAM 18

■ January 12, 1945 E l e c t r ic a l R e v ie w 17

W e have a wide range of Standard 2, 3, and 4 W ay Terminal Blocks to meet the requirements of manufacturers of electrical equipment. W e have designed and produced many mouldings for the Electrical Trade, and these are some of the few which we can still manufacture for present-day needs. However, we look forward to the time when we shall be solving your post-war problems, assisted by the extensive knowledge we are gaining in manufacturing to exacting war-time specifications.

INSULATORS LTD

LEOPOLD ROAD - EDMONTON LONDON N 18 PHPNE: TOT 149! (4 lines) January 12, 1945 18 E l e c t r ic a l R e v ie w

:FLUXOMAT/C THE NEW CHARCINC SYSTEM BY

Railway Engineers and all users of Traction Batteries have, for many years, sought a battery charging sys­ tem that is automatic in operation. The Davenset Fluxom atic System has provided the answer. Without manual control, a constant pre-determined current is maintained GRAPH SHOWING IDEAL CHARACTERISTICS FOR THE against a rising battery voltage. LEA D ACID BATTERY. The charging rate, having been pre­ set. is unaffected by normal mains fluctuations, and the regulation of the charge current is entirely automatic, irrespective of the battery voltage. The advantages of these features, coupled with a reduction in the re­ charging time, will be apparent to all battery users, and we shall be glad to send full particulars and diagrams on application.

E. PARTRIDGE WILSON & CO. LTD. MANUFACTURING ELECTRICAL ENGINEERS DAVENSET ELECTRICAL WORKS, LEICESTER. January 12, 1945 E lectrical Review 19

‘m a XLUM e ’ FLAMEPROOF FITTINGS FOR TUNGSTEN ADD DISCHARGE LAMPS

CONSULT— London Office : VERITYS LTD. BRETTENHAM HOUSE LANCASTER PLACE ASTON - B’HAM 6 W.C.2

Depots at BIRMINGHAM - MANCHESTER BRISTOL GLASGOW NEWCASTLE-ON-TYNE LEEDS E l e c t r ic a l R e v ie w

BONDERIZING

PAINT TO STEEL prevents flaking, chipping and rust

parkerizing is another Pyrene Metal Finishing Process which is widely accepted as a simple and economical rustproofing treatment for small parts and components that do not require painting.

THE PYRENE COMPANY LIMITED* METAL FINISHING DIVISION Great West Road, Brentford, Middlesex.

______IT CANNOT BE BONDERIZED(Begd.)____ WITHOUT______PYRENE CHEMICALS January 12, 1945 E l e c t r ic a l R e v ie w 21

FOSTER TRAMSFORMERS & SWITCHGEAR Ltd (I ncorporating FOSTER ENGINEERING COMPANY) SOUTH WIMBLEDON LONDON S.W.I9

Associated Companies : Lancashire Dynamo & Crypto Ltd. Crypton Equipment Ltd. January 12, 1945 E l e c t r ic a l R e v ie w 2 2

*■ Telcoh” cables by courtesy of Telegraph Construction & Maintenance Co. Limited. WELVIC" and ALKATHENE"

For cable covering

IMPERIAL CHEMICAL INDUSTRIES LTD LONDON SWI January \2, 1945 E l e c t r ic a l R e v ie w 23

. O T O R S ELECTRIC GENERATORS TRANSFORMERS SWITCHtCONTROL f / m GEAR MERCURY-ARC & METAL-PLATE 24 E l e c t r i c a l R e v ie w January 12, 1945

Unaffected by heat..

How HY-MEG overcomes Impregnation Problems

Over-heating, whether due to protracted working or to tropical temperatures, can play havoc with ordinary varnish impregnations — but not with HY-MEG. For there is nothing ordinary about HY-MEG as you can readily understand by reading the recently published booklet, “ STABILITY IN INSULATION.” When you learn also that HY-MEG needs less stoving time, gives mechanical rigidity, improves the electrical properties of windings, resists moisture, oils, acids and alkalis, (besides being unaffected by heat), then the reasons why it is being more and more widely used by leading impregnators become apparent. HY-MEG, the successful outcome of the call for positive stability, has banished such faults as “ throwing” of the varnish, softening of wire enamel, breaking of wires, failure due to coil movement, etc. More detailed information on these important matters is given in the booklet. Please apply for your copy on Business Heading or Card, enclosing 2d. to comply with the Control of Paper (No. 48) Order, 1942. ‘HY-MEG’ IMPREGNATING VARNISHES V. 6738. The Supreme Impregnating Varnish for withstanding severe mechanical stress. Suitable for “ heavy duty” units. V. 6934. Made specially for enamelled wire windings, but is equally suitable for Rayon and Glass-covered Wire.

CONSULT OUR ‘BRAINS TRUST9 The H Y-M E G “Brains Trust ” is always in session, ready to deal with questions relating to insulation, Any special problem put to it brings helpful response. LEWIS BERGER & SONS, LTD. (Es/. 1760) LONDON, E.9 Phone AMHerst 3321

MANUFACTURERS OF INSULATING VARNISHES & ENAMELS 25 January 12, 1945 E l e c t r ic a l R e v ie w

DIESEL-ELECTRIC January 12, 1945 E l e c t r i c a l R e v ie w 2 6

On the road to V ic to r y ^ J

AS THE ROAD TO VICTORY OPEi

3 ' C , T ' i Reed. TradeMark THAT THE PLANES, THE GUNS^TI N o'8. 566 *85-6-7 TANKS, THE LORRIES, T H |

CABLES

Throughout all the critical operations war, as well as for industrial and domesl requirements, C.M.A. Cables have prov e w .A MEMBERS OF THE CABLE MAKERS* ASSOCIATION The Anchor Cable Co. Crompton Parkinson W . T. Henley’s Tele­ The London Electric St. Helens Cable & Ltd. L td . (Derby Cables Ltd. I graph W orks Co. Ltd. W ire Co. and Rubber Co. Ltd. Smiths Ltd. British Insulated Cables The Enfield Cable Johnson & Phillips Ltd. Siemens Brothers & Ltd. The Macintosh Cable W orks Ltd. Co. Ltd. Co. Ltd. (Siemens Callender’s Cable & The India Rubber, Electric Lamps and The Metropolitan Construction Co. Ltd. Edison Swan Cables Ltd . Gutta-Percha & Tele­ Supplies Ltd.) graph W orks Co. Ltd. Electric Cable & Connollys (Blackley) W . T. Glover & Co. Ltd. (The Silvertown Co.) Construction Co. Ltd. Standard Telephone Ltd. Pirelli-General Cable & Cables Ltd. Liverpool Electric Cable The Craigpark Electric Greengate & Irwell Works Ltd. (General Co. Ltd. Cable Co. Ltd. Rubber Co. Ltd. Electric Co. Ltd.) Union Cable Co. Ltd. Advt. of the Cable M akers’ Association. High Holborn House. 5i-54 High Holborn. London. W.C. I. 'Phone Holborn 7633 January 12, 1945 E l e c t r ic a l R e v ie w 27

We are specialists in the manufacture of LARGE TRANSFORMERS Our illustration which shows a 40 MVA unit for a voltage ratio of 66,000/33,000 and with a tertiary winding for 11,000 volts, is an interesting example of the care taken to ensure robust construction. All the windings are pre-shrunk and the rigid supports for the mid-point reactors and the tapping leads which are brought out for O N LO A D T A P C H A N G IN G covering a range of 25% should be particularly noted. ASEA ELECTRIC LIMITED Associated with Fuller Electrical & Manufacturing Co. Ltd. HEAD OFFICE: FULBOURNE ROAD, WALTHAMSTOW, LONDON, E.I7 Telephone : Larkswood 1350 (10 lines) Telegrams : Autosyncro, Telex, London Electrical Review J^uary 12, 1945 Zo rediffusion WAV E M E T E R

The compact, precise check on every ship and shore radio station. Used by very many senior inspectors and officers for setting and maintaining accurate frequency calibration. Immediate Delivery. Write for details to Sales 4 rediffusion lt d Designers and manufacturers of Radio Communication and r e d i f o n Industrial Electronic Equipment

SUBSIDIARY OF BROADCA SJ RELAY S E R V 1 C E LIMITED LONDON „CTOR.A STATION HOUSE ■ VICTORIA STREET (PHONE VICTORIA 883 I) January 12, 1945 E l e c t r ic a l R e v ie w 29 Specify “ ERSKINE HEAP and eliminate any presence of doubt about the SWITCHGEAR . . .

THE SYMBOL OF RELIABILITY O f all the sound reasons why some of the largest Corporations, Electrical Plants, Mills and Factories, etc., through­ out the Empire ...... have specified “ ERSKINE HEAP” the greatest is that o f RELIABILITY

Plus P 1018 LOW maintenance costs. ERSKINE, HIAPjf'L“ Head Office: o .. , London Office : GRAND BUILDINGS. BROUGHTON, MANCHESTER 7. SW ltC tlgeC lT TRAFALGAR SQUARE, W.C.2 Phone : DEAnsgate 4561 (4 lines). SfsPrirtJidt« Phone : ABBey 2748-9 Grams • " Electron," Manchester. Grams Erskineap, Phone. London.” BRANCH OFFICES AND AGENCIES IN ALL PARTS OF THE WORLD EH .435 IMLCO Good lamps save Fuel January 12, 1945 E l e c t r ic a l R e v ie w TRUCK TYPE SWITCHGEAR

This J. & P. “ B.A.3 ” truck type cubicle is fitted with a “ C.J.B.I6” cross jet box oil circuit breaker and type “ H.G.4 ” hand operating mechanism. Like all J. & P. products, J. & P. Trucks are good and stay good. SEND US YOUR ENQUIRIES JOHNSON & PHILLIPS LTD.. CHARLTON, LONDON, S.E.7

Telephone: Greenwich 3244 (13 lines). Telegrams: “ Juno,” Charlton. Kent

j j j P ^ e m j j JL t U i mowUi yurfihfy------January 12, 1945 E l e c t r i c a l R e v ie w

Woman's Work, in W ar -T im e — The WRN.S. It's a grand job of work

she’s doing. Freeing men for sea duties. Hard

yes ; but romantic. And if romance is con­

summated later on, she’ll deserve everything

which goes to making life easier—including

a Burco, of course.

THE “ MOTORLITE” TRANSFORMER UNIT This low-voltage unit of maximum efficiency and safety incorporates a double-wound transformer (to B.S.S. 794) and double-pole switch with 4 fuses (2H T and 2 LT) all mounted on a readily removable Gas Oven type door, the opening of which breaks both circuits. The HT Terminals have safety shields. Two spare fuses for each circuit are mounted in the case. Two or three arm lamp brackets can be supplied at an extra cost. Each unit can be fitted with one or two Reyrolle sockets and plugs for the operation Made by THE CONCORDIA of hand lamps, TRANSFORMER CO. etc., etc. a subsidiary of THE CONCORDIA Standard rating- ELECTRIC SAFETY LAMR 60, 80 and 120 CO. LTD. V A max. Volts 440, min. Volts 12 SOLE SALES AGENTS: ELCORDIA LIMITED A .I.D . APPROVED 2 Caxton Street, Westminster, London. S.W.I Telephone : ABRty M i

6070 January 12, 1945 E l e c t r ic a l R e v ie w 33

• • • the mus cles of his brawny arms

O NE of the grave disadvantages of Desoutter Tools is that they don’t develop a boy’s muscles. The heart of many a growing

lad leaps to hear that he will be allowed to use a Power Drill. In

his mind he sees those brawny lumps of humanity boring their way ^ V through massive chunks of concrete, their great muscles,

ur t rippling and shuddering from wrist to neck and all down

the back and front. He sees himself the pride and envy of

his pals. He sees great cricket balls appearing all over his

arms. But Desoutter brings disillusion. He can handle a Desoutter all day and every' day for months on end, but

the old bicep still looks like a very small grey mouse.

Specialists in Lightweight, Pneumatic & Electric Portable Tools. DESOUTTER

Desoutter Bros. Ltd. (Dept. R ), The Hyde, Hendon, London, N.W.9. Telephone : ColindaJe 6346-7-8-9

C .R .C .L 4 8 January 12, 1945 34 E l e c t r ic a l R e v ie w

RELIABILITY,

R O B U S T reliability is essentially a British characteristic — notable not only in its men and its institu­ tions but also in its products. None illustrate this characteristic better than

HACKBRIDGE ELECTRIC CONSTRUCTION CO., LTD. WALTON-ON-THAMES, SURREY

Telephone : Walton-on-Thames 760 (8 lines) Telegrams : •' Electric, Walton-on-Thames ” January 12, 1945 E lectrical Review 35

NO ALTERATION TO EXISTING JP NETWORKS

FLEXIBLE APPLICATIONS

RELIABLE RELAYS AT LOW COST (standard type)

METROVICK H iP P f c Ä f

: SYSTEM In the post-war world, the MetrovickRIPPLAY system of centralized control will be in great demand by Supply Authorities. This method of selec­ tive control embodies a Metrovick RIPPLAY injection equipment by which H.F. ripple currents are injected into the E.H.V. network, which in turn, actuate suitably tuned Metrovick relays installed at desired points on the L.V. supply system.

;o., LTD. g/h-402 TRAFFORD PARK ••• MANCHESTFP 17.

IMPROVE YOUR LIGHTING in 1 * yß^roduction METROVICK'S ILLUMINATING EN G IN EERS

D January 12, 1945 36 E l e c t r ic a l R e v ie w

V L N T - A X 1A Typical large Hewittic Rectifier for mass charging of batteries m for better Air Conditions

b a t t e r y , c h a r g e

Hewittic Rectifiers, well known for their excellence as converting plant for electric tr.ction systems and supplying D.C. industrial loads, etc., arę made also in a range of equipment for large and small scale battery cha*g- Ing—for mass charging of starting and lighting batteries tor motor and electric vehicles, for charging emergency lighting batteries in cinemas, depots and air raid shelters. In this, as in the larger field

THE HEWITTIC Mercury Arc RECTIFIER

Hewittic floor-mounting pattern STANDS battery charging rectifier for electric vehicle operation SU PREM E I

łjew itiic IfectifjieZb

VENT-AX1A LTD. 9 VICTORIA STREET, LONDON. SAV.i HEWITTIC ELECTRIC C O . L T D . AND AT CLASOOW i.'MANCHESTER WALTON-ON-THAMES, SURREY Telephone : Telegrams : Walton-on-Thames760(8lines)."Hewittic.Walton-on-Thames” January 12, 1945 E l e c t r ic a l R e v ie w 37

Planning with Premier ...

Whatever emerges from the welter of discussion and “ plan­ ning” — be they temporary, pre-fabricated or the “ normal ”

houses and flats that we found so pleasant before the war—there will again be something for everyone in the Premier Fine-Quality range of electrical appliances. Our slogans . . . “ For Every Purse and Every Purpose ” . . . and “ Prosper with Premier ” will point the way for the enterprising trader- municipal or private. f ^ P R E M I E R ^ Fine-Quality Electrical Appliances ‘Laundwcil’ and “Smoothwell” electric irons; “Quickset” and “Pylon” electric kettles, electric tires toasters; coffee percolators; multi-boilers, glue-pots and other appliances. 3g Electrical Review Ja n u a ry 1 2 , 1 9 4 5

NIPHAN plugs and sockets \ 5-amp, 250-volt, 3-pole couplings g N633¡33 A.a . r- ¡:ru am*- r g T w o-w ay g Angle Plug. N632 A. 1 A ngle P lug

MICRO-LATHES ¿ o I e x - ^ANCHESTEE MODERN SMALL PRECISION BENCH LATHES

for WATCH,CLOCK AND INSTRUMENT WORK METER TEST ROOM AND REPAIR WORK ETC. We are always ready to advise upon the adaptation of Pultra Lathes to meet special requirements. W rite for Catalogue CA4. PULTRA LTD. Micro-Capstan Lathe Model HU 42 2 4 GRAVEL LANE Centre Heiaht i 50 mm. Spindle Bore. 10 mm. S A L F O R D 3 c U B ® n L -400 rpm.to6.000 r.p.m. for motorised model. MANCH ESTER Phone BLA 9181 SP‘ January 12, 1945 E l e c t r ic a l R e v ie w 39 Extra starting torque ?

.. . Here is

your motor.

Where you have a drive demanding extra the same if you required other special char­ starting effort, you may think it difficult acteristics. Parkinson Flow Production has to obtain a suitable motor. That is until made it possible to offer a standard range of you look into the Parkinson standard over 2,000 types which includes many that range of A.G. motors. There you will find the you usually expect to have specially made. Parkinson “ Tork”— a motor with ju s t that The Parkinson A.C. Motor Service can extra starting torque required. It would be save you a great deal of time and money.

CROmPTO January 12, 1945 E l e c t r i c a l R e v ie w 40

YOU ALREADY KNOW WE MAKE RADIO SLEEVINGS * INSULATING TUBING - COVERED WIRES & CABLES

U>‘ 1’ \

/ n v * * « * * " £

- t e n a p l a s l i m i t e d PIONEERS IN PLASTICS 7 PARK LANE, LONDON, W.l January 12, 1945 E l e c t r ic a l R e v ie w 41

This ¿s the SINGLE BUSBAR UNIT M ÿ l ASTA CERTI FI CATED

Manufactured by FERGUSON, PAILIN LIMITED MANCHESTER I I ENGLAND LONDON: BIRMINGHAM: G L A S G O W : T E M P L E B A R 8711/2 S U T T O N C O L D F IE L D 27+4 CENTRAL 5080 January 12, 1945 42 E l e c t r i c a l R e v ie w

This is an S.P. stand-off insulator extensively used in radio transmitting equipment. We make many types of insulator for all purposes. It may be worth your while to consult us before you finalise your design. STEATITE & PORCELAIN PRODUCTS LTD Head Office: Stourport-on-Severn, Worcs. Telephone: Stourport m . Telegrams: Steatain, Stourport. January 12, 1 9 4 5 E l e c t r ic a l R e v ie w 43 “ Discretion is the better part of Publicity in Wartime”

says G en era l C able V.I.R., P.V.C., T.R.S., L.C., etc., etc.

‘ course we’re not the only cable immediate interest is what we can do V y manufacturing firm engaged on for you now. Not as much as we’d war work—far from it—but just like, I’m afraid, while supplies avail­ the same we’re justifiably proud of able for ordinary business are restric­ the job we’ve done and are doing for ted. Our technicians, however, can ALL the services. I’ll be in a position advise and guide you on current to tell you more about all that when problems and will be in a position to the right time comes.” render valuable aid in many ways when “ As a commercial user, though, your cables put on civilian clothes again.”

THE GENERAL CABLE MANUFACTURING Telephone: LEATHERHEAD 3021/2 (Private Branch Exchange) CO. LTD. Telegrams: LEATHERHEAD, SURREY “ ISOLDE,” LEATHERHEAD January 12, 194- 44 E l e c t r i c a l R e v ie w

of Possession...

'T 'H IS photograph was taken in a British "ft ar Factory and shows one of the Ellison main 400 volt switch­

boards. This sub-station is one of the show places of an organisation where finish and efficiency are demanded of both equipment and product and-where only the very best is good enough. We are justifiably proud to be

associated with such an undertaking. E l e c t r ic a l R e v ie w Managing Editor : January 12, 1945 Hugh S. Pocock, M.I.E.E. Technical Editor : Commercial Editor Contents C. O. Brettelle, M.I.E.E. J. H. Cosens Page Contents continued :— Page Editorial.—Peaks and Progress 37 Professional Appointments . 60 Liverpool Extensions • . 39 Cable Restrictions Relaxed . 60 Views on the News. By “ Reflector ” 43 Drying Grain Electrically . 61 Manufacturers’ Activities 44 Electricity Supply . 63 U.S. Army Hospital . 65 Correspondence . 47 N ew Books . 67 Personal and Social 49 Forthcoming Events . 68 Recent Introductions . 52 Financial Section . . 69 Power Engineers’ Salaries 53 . 73 Part-Time Technical Training 54 New Patents Contract Information . 74 Rural Cottages 55 Labour-Saving Kitchen 56 Commerce and Industry 57 Classified Advertisements 73 Severn Barrage 60 Index to Advertisers 82

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

LAND & MARINE WATERTUBE BOILERS

YARROW & CO. LTD- SCOTSTOUN GLASGOW January 1 2 , 1 9 4 5 46 E l e c t r i c a l R e v ie w PORTABLE OIL TESTER (MAINS OPERATED) FOR THE RAPID TESTING OF TRANSFORMER & SWITCH OILS

% Entirely self-contained and arranged for direct connection to any low voltage A.C. Supply. 0 The test voltage is adjusted continuously and smoothly from zero to 40 kV. 0 The control gear is contained in a detachable lid which is placed well clear of the high tension circuits. % The form factor closely follows a sine wave at all voltages. Q Can be adapted for high voltage insulation flash testing when required. EVERETT EDGCUMBE Manufacturers of all kinds of indicating and recording electrical instruments. Photometry experts COLINDALE WORKS, LONDON, N.W.9 Phone: Colindaie 6045 ^ ' 0r% E l e c t r ic a l R e v ie w politechnikij THE OLDEST ELECTRICAL PAPER - ESTABLISHED 1872

Vol. CXXXVI. No. 3503. JANUARY 12, 1945 9d. WEEKLY

Peaks and Progress How Can Overloading be Avoided ?

F electricity were not so firmly en­ the peak ? If there is it must somehow be I trenched in the public mind permanent averted. If gas is constantly available harm might be caused by the grave (albeit at a lowered pressure) electricity warnings and threats of deprivation which cannot be intermittent. have been made recently by the Central But how is it to be done ? The supply Electricity Board and the Ministry of industry will never persuade housewives to Fuel and Power. As it is, the public have their breakfast and warm their rooms desire for electricity has been heightened before the factories start up, or wait until by the present difficulty of obtaining the industrial peak is over before doing connections, extensions and appliances. these things. Storage is out of the Consequently the possibility of being cut question, but district heating might help off has not had the repellent effect which here and there. It seems that only by it might have had in normal times when increasing the amount of marginal plant cold snaps are just as likely to happen. can the difficulty be surmounted. But this is uneconomical. A principal reason for Narrowed Margin the existence of the Central Board is the The necessity for the warnings is not in reduction in stand-by plant which it has doubt but the causes which created it are brought about. How can it now increase not so clear. It seems that the margin that plant (and necessarily its charges) and between plant capacity and demand has so still justify its establishment, unless con­ diminished that it threatens to disappear if tinuity of supply be considered of greater large numbers of fires are switched on in importance than its cost ? One way out the early morning. Although the war has might be to regard the “ surplus ” plant as worsened the situation, this cannot be preparation for meeting future demands a regarded as a purely wartime phenomenon ; year or so ahead of the time now allowed. the last pre-war cold snap stretched Generating Efficiency generating capacity to the limit. Industry must be served first and there­ Related benefits of this anticipation of fore it is the smaller consumers, mainly development would be to bring forward domestic, who must be cut off to keep future work for the plant manufacturers, things running. But what will the position thus helping in the realisation of full be in peacetime ? Full employment means employment, and the possibility of bringing maintenance of the industrial load at into commission more economical plant quite as high a level as is now being and in this way saving coal. experienced. In sudden cold weather The mention of coal brings forward there still will be that clash of demands another aspect of the sad story. We have from factories and homes. Is there then a seen it stated, apparently with official danger that even in peacetime it will be sanction, that coal has nothing to do with necessary to implore the public to keep off the case, but this must surely have related January 12, 1 945 E l e c t r ic a l R e v ie w 3 8

college training. The prom inence gjven to quantity only. Although ostensibly in the Report to the education of crafts the supply undertakings may be getting the tonnages they require, what of the quality . is fully justified; upon this £ePends of effectiveness of the work of the o ^ rs Can the existing plant operate at maximum the three main groups into which entrants efficiency with the stuff the authorities into the electrical industry are div ded. now have to put up with? In this, as in the earlier Report, training of intelligence rather than the imparting W h i l e the removal o f of instruction is recognised as the essential Distribution general restrictions on the purpose of education. While equal oppor­ C ables manufacture and jointing of armoured p.i.l.c. cables tunity for all will yield more scope to those possessing exceptional ability, it is is a relief to be welcomed on several even more important to raise the average grounds, there is something to be said for the proviso that for the time being level. the relaxation will apply, except with T h e Southend proposals the approval of the Electricity Com­ Southend for reforming the elec- missioners, only to cables complying with T a riffs tricity tariff structure are B.S. 480/1942. During the next twelve having an uneasy passage. months undertakings which have fallen At last month’s meeting of the Town into the habit of specifying variant features Council an amendment for the refeience will have an opportunity of considering back of the scheme was defeated by four whether local conditions are sufficiently votes. Now a councillor has given notice abnormal to make a departure from that he will move the rescission of the standard really necessary. proposals. His principal contentions are that they would operate unfairly against C o l l e g e courses for flat-rate and contract-rate consumers and F u rth e r those who are entering the that the adoption of rateable value as the Training electrical industry are basis of the proposed “ block ” tariff necessarily related to the would also operate inequitably. With a general system of secondary education. multiplicity of rates and serious price Further technical education must therefore anomalies such as have existed at Southend be in harmony with developments arising any rationalisation scheme will inevitably out of the recent Act. Its future also be detrimental to some consumers, but depends upon the expansion of teaching that does not mean it will be “ unfair. staffs of the right calibre, and m this An interesting point raised in the borough manufacturers can afford considerable electrical engineer’s report is that the new help. While the long-term value of the block-rate domestic tariff complies with I.E.E. Report on part-time education the Electricity (Supply) Acts, whereas with (reviewed in this issue) is in laying down the usual two-part tariff an alternative ’ the lines of advance during the next five flat rate would have to be offered by to ten years, it has an aspect of urgency the undertaking. as well. That is its insistence on the R e c e n t events in immediate need for a unified policy A m e ric a n Western Europe have regarding the future of National Certificates P o s t-W a r caused American manu- and, more particularly, for the intro­ P la n s facturers to adopt a more duction of an Intermediate National cautious attitude in the Certificate. When this point has been matter of reconversion. The American settled plans can be prepared for the turther General Electric Co. had commenced a education of electrical engineers released series of conferences upon post-war plan­ from the Services. ning. It was considered by Army and T h e restricted amount Navy officials that these meetings might Raising the of time available for give the impression that the need for war­ A v erage further education can be like products was declining and lead to a used most economically by slackening of effort. So the company has apportioning it according to the ability postponed the remainder of its conferences of recipients to profit by it. Only in this until such time “ as the Army and Navy way can full benefit be derived from the appraisal of the nation’s war situation will one hour a week allowed for part-time p e rm it.” January 12, 1945 E l e c t r ic a l R e v ie w 39 Liverpool Extensions Firing Method and Steam Conditions Changed at Clarence Dock rjlH IS article relates to the wartime exten- maximum continuous rating of 250,000 lb. sions of the Clarence Dock generating per hour, with an efficiency of 80 per cent., station of the Liverpool electricity under­ whilst the economic rating of the boiler is taking. The extensions may be regarded as 220,000 lb. per hour with an efficiency of.81 two interim stages in the development of an installation with a total ultimate generating capacity of a few hundred thousand kilo­ watts, the first stage, which has been com­ pleted for some time, having brought the station up to about half its ultimate capacity. This first stage consists, in the main, of a 51,500-kW turbo-alternator set and a 250,000- lb. per hour boiler, and is in line with an earlier extension which involved the raising of the steam conditions above those initially adopted for the station to 630 lb. per sq. in. and 825 deg. F., at the superheater stop-valve. So far the station is completely stoker fired, the boilers all being equipped with chain-grate stokers, but for the second stage of the extensions, which will be the subject of a future article, pulverised fuel has been adopted in view of the varied qualities of coal which have to be dealt with nowadays. This second stage, which is in an early phase of erection, consists of two 350,000-lb. per hour pulverised-fuel-fired boilers with elec­ trostatic grit precipitation plant, one turbine-

Above : The speed of the induced-draught fans on the boiler-house roof is regulated by hydraulic co u p lin g s Left : The 250,000-lb. per hour boiler has individual supervisory remote con­ trol ; control cubicle at end per cent., based on the I.C.E. code. Coal from the bun­ kers is passed through two Avery weighers, the inside of the weighers and delivery pipes to the boiler hoppers being rubber lined. The boiler has one twin chain-grate driven feed-water pump, works switchgear stoker, 24 ft. long and 30 ft. wide, which is and the necessary civil and building works. served by two constant-speed driving motors, The boiler plant of the completed but there is mechanical provision for eight extension is a Babcock & Wilcox high-head grate speeds from 0-224 to 1131 ft. per unit, stoker fired, with an integral super­ minute. After combustion the ashes are dis­ heater and economiser. This unit has a charged from the grates into the pans of the January 12, 1945 E l e c t r i c a l R e v ie w 4 0 paddle ash system in which they are quenched blowers are provided between by water and then fed by a rotary arm on to lubes. Combustion Davjdson forced- belt conveyors which take the ashes to a at 280 Jg^F^by two^ D , with a net volume of 49,500 cu free air per minute at a lemperature of 100 deg. F., at the fan inlet. These fans are designed for a total pressure of 10-25 in. w.g. under maximum rating conditions. Each fan is driven by a 129-HP, 980-RPM motor, the fan speed being regulated through hydraulic couplings. The air and flue gases open out into a combustion chamber with a volume of 9,532 cu. ft., which repre- sents 13*2 cu. ft. per sq. ft. of grate area. The combustion chamber has Bailey water-cooled walls with a total effective area of 1,312 sq. ft. The rear wall and the rear water-cooled arch have an effective area of 687 sq. ft. The actual boiler heating sur­ face served by the combustion air and gases is 11,682 sq. ft. The net volume of flue gases passed on by each induced-draught fan to the chimneys is 63,000 cu. ft. per minute at a temperature of 312 deg. F. at the maximum continuous rating of the boiler. Each of the induced-draught fans is, however, designed for a maxi­ mum capacity of 85,000 cu. ft. of gas per minute at a temperature of 340 deg. F. and a suction pressure of 8 4 in. w.g. The speed of the fans is regulated by hydraulic couplings in the transmission systems. The designed water volume of the boiler, including the water walls and The condenser is of the central-flow tubular design and water-cooled arch, but excluding the has a c o o lin g s u rfa c e o f 39,000 sq. ft. economiser, is 10,900 gallons. The ferro-concrete tank whence they are grabbed steam space in the boiler drum is 400 cu. ft., by an overhead crane and delivered-to an and in the boiler drum and superheater 925 elevated bunker which serves road or rail cu. ft. The superheater is of the continuous multi-loop type with a heating surface of vehicles. An interesting feature is a horizontal cross- 13,620 sq.ft. flow tubular air heater in which the air In common with the other boilers in the passes through the tubes and the gases are station, individual central supervisory control on the outside. The tubes of this heater are is provided by an Electroflo floor-mounted arranged in four horizontal banks and soot- desk-and-panel type control cubicle situated

T h e SO.OOO-kW s e t h as h.p. and l.p. c y lin d e r s an d main and auxiliary alternators in tandem January 12, 1945 E l e c t r ic a l R e v ie w 41 at the front of the boiler on the firing floor. similar ducts at a point higher up the river. From this the fan motors for speed control The duplicate circulating-water pumps are in are remotely operated. The panel also carries the turbine-house basement near the con- all the boiler pressure, temperature, draught, etc., instruments, so that the operating con­ ditions can be quickly observed and adjusted to maintain the maximum possible efficiency at any load. Soot-blowers, which are also controlled from a central panel situated adjacent to the boiler at the firing floor level, are hydraulically operated, by means of Lockheed equipment. The Metropolitan-Vickers 1,500-RPM turbo-alternator set has a two-cylinder con­ densing turbine, a 50,000-kW main supply alternator and a 1,500-kW house alternator for supply to the turbo-alternator and boiler auxiliaries. The turbine is an impulse-type equipment with 28 stages in the high-pressure cylinder and 18 stages in the low-pressure cylinder. The blading down to 500 deg. F. at the m.c.r. is of “ Hecla ” steel and the remainder is of stainless steel. The stop- valve conditions are 600 lb. per sq. in. and 800 deg. F. The governor setting can be adjusted by hand at the turbine as well as Each rotary extraction pump can deal with the by a squirrel-cage motor which is remotely whole of the condensate operated from the control room. The condenser is of the central-flow tubular denser, and each is capable of dealing with design and has a cooling surface of 39,000 well over a million gallons of water per hour, sq. ft. It is served by river water at from 50 so as to provide 50 per cent, of the cooling water required by the con­ denser, air coolers, turbine air coolers, and flushing the circulating-water strainer. Each of the pumps is driven by a 226-HP 485-RPM directly coupled slip-ring motor. The water strainers are of the Bailey & Jackson rotary-screen type, the straining medium being lig­ num vitas. For maintaining the de­ signed vacuum in the con­ densate chamber there are three sets of steam-operated air ejectors, any two of which are capable of hand­ ling all the air which may enter the condensate sys­ tem. They are of the three stage type, and include sur­ face coolers, so that the heat contained in the steam employed in each stage of the ejector may be utilised Three high-pressure feed-water heaters are arranged on the discharge for the purpose of raising side of the boiler-feed pumps the temperature of the con­ to 65 deg. F., and with normal steam condi­ densate. The quantity ‘of steam required tions full output is obtained with the circulat­ by each set of air ejectors is 1,0001b. per hour. ing water at 38 deg. F., when 15 per cent, of The ejectors are located below the turbine- the tubes are blanked off. About two million floor level, but all the instruments and gallons of circulating water is taken per hour regulating valves can be operated from the from the near-by river through two large turbine-floor level. concrete ducts and is discharged through two The condensate is handled by two Mather January 12, 1945 E l e c t r i c a l R e v ie w These feed heaters are of the vertical nair-pui > , ^or a ir r s sttrxre high-pressure heaters bem g d g ^ Qn — {he densate under any conditions of steams tpres­ J . sure and temperature and condenser vacuum. normal pressure of 800 lb. p ,q the E a ch has a capacity of 43,500 gallons per water side. They are ar/ ^ g mos and bv charge side of the boiler feed p . called minute and is directly driven by a 80-HP 965-RPM motor. The extraction pumps are this arrangement the water at a operate situated on the condenser basement floor «» 'o f about 205 deg. F* VewoPenewrefeed have been installed in conjunctmn with this extension. They are Mather &. Platt “ Plurovane ” sets each capable of delivering 918 gallons of water per minute at 225 deg. F., against a total pressure of 800 lb. per sq. in Each pum p is driven directly at 1,480 RPM by a 780-HP motor. The pumps deliver directly through the feed heaters to the economiser which has a water capacity of 2,660 gallons. The 50 000-kW main alternator generates at 33,000 V and can be connected to the main or auxiliary busbars through one of two 1,600-A 1,500-MVA oil circuit-breakers and isolating switches. Its windings are protected by Merz-Price balanced- current equipment. The neutral point is permanently earthed through a 400-ohm liquid drain resistor and may also be earthed, if desired, through the station main earth resistor. In order to limit the pros­ pective third-harmonic current cir­ culating through the system and alternator neutral when the machine neutral is earthed through the station resistor, a reactor is connected in the neutral circuit. This is designed to offer a low impedence to normal earlh-fault currents and yet to reduce the third-harmonic circulating current to a negligible value. The machine has closed-circuit ventilation, the alternator air cooler water being passed through auxiliary water coolers mounted outside the alternator block. The latter are connected to the sea-water circulating maK P and returns it to the system system. The air circulation through the alternator is provided by fans and the condensate is delivered through the mounted on the rotor shaft which can be supplemented by a separate external fan. lower-stage feed heaters to the boiler feed nump which is situated in the pump room Coupled to the main alternator shaft is a 1,500-kW, 3-phase, 3,300-V auxiliary alter­ near the boiler house firing floor A low nator for works supplies, together with main nressure evaporator for dealing with the con­ and auxiliary exciters. The main exciter densate make-up draws steam from the low consists of two machines mounted in a single nressure end of the turbine and returns it to frame. One machine excites the main alter­ The system. This evaporator is capable ot nator and the other the auxiliary alternator. supplying a maximum make-up quantity of All the main alternator auxiliaries are supplied 5 per cent, of the normal full-load consump- at 3,300-V from either the auxiliary alter­ nator or from the works substation which is ti0Th°ef¿K p erates on a h e a t regenerative fed from the station busbars. The smaller rvcle the feed water being heated at ni.c.r. to auxiliaries are supplied at 400 V. 3 5 8 d e g F by means of multi-stage bled- January 12, 1945 E l e c t r ic a l R e v ie w 4 3 ittli ■te »ti nib¡ ' Views on the Vews efc Reflections on Current Topics alk cafe O excellent are the E.D.A. model post­ expense and “ something else to go wrong.” ait war kitchens and their equipment (see There is, of course, something to be said for kg. i last week’s Electrical Review) and so far this attitude in the early stages but as hob unit cte ahead of pre-war designs that I can find control is the sole surviving advantage of ¡H little to criticise. A visit to the Building the gas cooker, the electrical industry must ■ilfc Centre did, however, make me ponder over a not neglect it. pabki few things, particularly with regard to the Investigations into the problem before the BStf cooker. The inclusion of a horizontal type war resulted in the production of the Sunvic Sai» in all four models seems to indicate that “ Simmerstat ” device embodying a bi-metallic ii !i it will be widely adopted in the more com­ strip. With its war-time experience in the at 1.3 modious kitchens of the future. Too long did industrial field which has resulted in the IM. l i designers follow gas models: now it is more development of control units accurate to * h likely that the gas people will do the copying. within TJ0 deg. F., the company has now i s n i s i * * * developed a new hot-plate control unit only 2f in. deep excluding the knob (as com­ Mf! It has been said that the new buffet cooker É5ED pared with 3f in. in the old model) and 2 \ in. does away with stooping. It would be more square. Having a standard bush mounting correct to say “ so much stooping,” for n o k and terminal arrangements it can be fitted though the oven is much higher than in the to any cooker in replacement of the ordinary nlA vertical type it is still not so high as some K a b l i three-heat switch and takes only about a people would like it, namely with its base at quarter of an hour to fix. Its non-linear l i n f a i hob level. The objection against the latter i bal® scale gives the most accurate control in the arrangement is that it breaks up the desirable lower heating zone where it is most desirable. raite continuous working level. itoiá The cost of the unit is not expected to be The omission of drop-down oven doors in much more than that of a three-heat switch. s » a the new cookers does not, 1 gather, necessarily if tes indicate preference on the part of the designers * * * for side opening, but the considerably extra Electrical contractors are frequently re­ Éibep cost of the former is not considered justifiable minded of the value of combining the cuntat a in a mass-produced line such as this. I retailing of appliances with their installation Stfflü should have thought that the elimination of work and I have often wondered what th em áa the necessity for constructing both left and proportion of them run dual businesses. It ¡bibíss right handed doors would have gone a long appears from inquiries made among its aeciíJíi way to counterbalancing this cost. In any members by the Electrical Contractors’ diaffií. case we may expect to see drop-down doors Association that about 56 per cent, of them : 10 M» on the de luxe models. are in the selling business. From a recent yeiioié * * jjt report of the E.C.A. Council’s proceedings íaÉjc® it seems as though doubt has been expressed From my own unhappy experiences with regarding the practicability of retailing ctod® boiled-over milk, etc., I was glad to see that electrical goods only. They are certainly oraii® the hingeing of the flap of the grill compart­ retailed as a side line by numbers of odd iighau*’ ment eliminates the usual cavity which just people, which makes the contractor-retailer’s Mistó1 cannot be properly cleaned without unscrew­ position difficult. : lilis i ing the flap. Though all the four cookers * * * er árate are similar in general design they are not all don iW made by the same manufacturer and they Tendering for a large contract always ded bl * have slight individual characteristics. They involves the tenderer in expense—some­ h i c h * ' are, of course, all “ prototypes ” but it seems times pretty heavy expense. But what siena!} that a long exposed hinge extending the about a case reported by the Liverpool r sh a#1 whole 42 in. width of one unit is just asking branch of the E.C.A. ? In this instance six for trouble. As thermostatic control is electrical contracting firms were asked to (iliary i» ¡rwiife® provided the addition of a thermometer in produce a specification and lay-out for a large contract. This having been done, it nain w1 another model seems an unnecessary expense. dina» * * * was proposed to select one of the six schedules and issue it to each of the six firms as a basis m a ií i® Following the more or less general agree­ i alte#* for quotation. It was rightly considered by ment that thermostatic control of ovens will the branch that “ this was unfair and in­ aresnpf become standard in post-war electric cookers, volved a tremendous amount of unnecessary lia t¡ a!? the next logical step would seem to be to expense and work.” Of course it would save n wp apply it to hot-plates. Many consider this he snu* the inquirers the expense of employing a further development unnecessary, an added consultant,—REFLECTOR, January 1 2 , 1 945 4 4 E l e c t r ic a l R e v ie w Manufacturers’ Activities Special Features o f Last Year’s P roduction un to large power units for 132 kV for both Ferguson, Pailin, Ltd. KSm° »„d abZ d. Within tto rang: have URING the past year the export market come large numbers of P°1 collierv D has absorbed a considerable part of a tribution transformers, mobile colliery heavy output of small substation switchgear substations of 15-kV/440-V units fo.: war- from the Ferguson Pailin factory. Overseas devastated areas, including Russl^ \ a" ,,a contracts also include 4,000-A, 10-kV, 1,000- high-voltage transformer for use with a 15- MVA cellular-type circuit-breakers and a kV mercury-arc rectifier for wireless trans considerable number of high-breaking-capa- mission Orders for mercury-arc rectifiers city 33-kV outdoor units for Australia. A included one for eight 250-kW equipments notable development has been the completion for an English supply undertaking. In order of a design of outdoor “ Duo-Blast 66-kv to meet an increasing demand for battery- circuit-breaker (which in the extension of the operated cars in coal mines, a mobile oil- principle to 132-kV operation was described immersed rectifier equipment has been in the Electrical Review of September 15th). introduced. Like other electrical manu­ Tests are in hand to increase the range to facturers, Bruce Peebles have been closely 220 kV. Another new feature is a 132-kV concerned with special war work, their con­ outdoor wound-primary current transformer. tribution including components of the " Mul­ Orders for low-oil-content metal-clad switch berry harbour,” A.A. rocket guns and units rated at 1,000 and 1,500 MVA at 33 kV anti-tank mortars. and for additional 132-kV C.E.B. switching stations are being executed. C. A. Parsons & Co., Ltd. Designs of the “ RS ” rotary change-over A good proportion of the larger turbo­ switch are now available for carrying up to alternators on order from or completed during 60 A, AC. A similar design of quick-make- the past year by C. A. Parsons & Co., Ltd., is and-break switch to carry 10 to 25 A has been destined for Australia. Among these are two developed for use on DC systems up to 30,000-kW sets and a 50,000-kW set, all for 600 V. J , . , 3 000 RPM. The latter is similar to the two Control boards are arranged with flush- machines installed in the same power station mounted instruments and with the mimic in 1940, having three cylinders with a double- diagram at eye level. The red and green ended 1.p.unit; in both cases the condensing indicating lamps are incorporated m the control switch which is in line with the mimic plant is being made in Australia to Parsons’ designs. A 25,000-kW, 3,000-RPM tandem diagram; they flicker while the control switch turbo-alternator with a single-ended l.p. is being turned, remaining steady after the switch has been pressed and turned farther cylinder was put into commission in another through 45 deg. to complete the control Australian station to operate at steam conditions of 600 lb. per sq. in. and 825 deg. F. operation. The alternator is designed for generation at Bruce Peebles & Co., L td. 34 kV. A duplicate machine is on order. Considerable growth in demand for geared A further set put in hand was for 30,000-kW steam turbines, oil-engine driven alternators at 1,500 RPM (i.e. for 25 cycles) ; the turbine and marine-type motors and generators for consists of a single cylinder, while the alter­ ship propulsion and auxiliaries is reported nator stator is wound with twin-core con­ bv Bruce Peebles & Co., Ltd. An example centric conductors for 20 kV. The turbine of the tendency towards direct-on-line starting of a 15,000-kW, 3,600-RPM set started up in of large squirrel-cage motors is provided by Canada is a single-cylinder unit with two sets an order completed for a 650-HP machine of exhaust blading in parallel. Of a number developing 70 per cent, of full load torque to of 2,500-kW sets, five for the U.S.S.R. incor­ start with 350 per cent, of full-load current. porate pass-out turbines for delivering process Progressive mechanisation in the coalfields steam. led to manufacturing activity in mining type Turbo-alternators being built for home motors and control gear, many of flameproof power stations include one each of 40,000- construction, including a numtaer Tor Russm and 53,600-kW capacity with condensing and New Zealand. A new development. is a plant and 33-kV alternators. Those lately mercury-break switch unit for starting motors put into commission here include two of in conditions covered by Groups 1 & 2 of 15,000-kW (single-cylinder type) for steam conditions of 400 lb. per sq. in. and 800 ^O rders received for transformers covered deg. F. A turbo-blower to deliver 30,000 a range which extends from several thousands cu. ft. of free air per minute at 35 lb. per sq. of small units for mobile wireless transmitters in. (gauge) is under construction. Another January 1 2 , 1 9 4 5 E l e c t r ic a l R e v ie w 4 5

Steam condenser with c o o lin g s u rfa c e o f 30,000 fat® sq. ft. for 40,000-kW ngtfe turbo-alternator asij (C. A. Parsons & Co. L t d .) f»ç a a *ai; t e a x ra* o : t jjjg * 2 ¡ » ; 2 £ aa e & a ite j a i't ; ex :

14 irea i t L ¡dsn ffii: ¡EÏÏ' 30KE iÜlfe S 5B E Bishs RfMs feSÉ Portion of m im ic diagram on control board scias® incorporating “ FLC ” control switch £ s S (Ferguson, Pailin, Ltd.) adCSç e e e e EffiS I.» );f c ® A k i rDHJK1 r«- - seisc:

O f a f f i S Ï.S.R.Ï aingp** Air-blast 66-kV switchgear in Tapping switch ■ for ^ out-door sub­ sid e o f h ig h - v o lt­ s ta tio n ,af*» age transformer associated with (A. Reyrolle & T io s e i> 15-kV mercury- C o . L td .) arc rectifier for ide i* radio trans­ f o r ® m is s io n a i * (Bruce Peebles •er$ & Co., Ltd.) !b.f«s 4fl0~ January 1 2 , 1 945 E l e c t r ic a l R e v ie w I 4 6 flameproof mining-type units ¡'^^Vso^MVA important contract is for the propulsion 50 MVA as well as 100 6-kV, 250 MVA machinery for three turbo-electric ships, horizontal metal-clad distnbLXfcn units t the stator bore of each driving motor is which existing relay design and circuit 12 ft. 4 in. in diameter and the casing weighs arrangements have been adapted about 15 tons. conditions. Power station s w ichgear tor Of the many orders for transformers now plants up to 25,000-kW capacity at ^o'tages being executed, the most notable comprises from 115 kV down to 400 V, t°gether four 10,500-kVA single-phase units which control boards and complete automatic ppro­ will form a three-phase 31,500-kVA, 113/ tection form another feature ot curre 10-5-kV bank with one spare unit. They are activities. In addition large ^pm ents of Sit of the divided-core oil-immersed type with distribution gear have been made to India O.N. cooling and each has a separate tapping :fc and New Zealand. , , winding over the high-voltage winding for a A compact flameproof starter panel has large range of off-load tap changing. Other been made available for local or remote S»'[ large transformers nearing completion include control of mining machines. The range ot ft three-phase units of up to 15,000 kVA at 121 the company’s flit-plugs has been extended kV for export and up to 20,000 kVA for use by a 60-A standard. The demand for AC in this country. Distribution transformers variable-speed commutator motors has been in considerable numbers, arc-welding trans­ substantially greater during the past year. formers, static balancers, neutral-point com­ ifprc AC arc-welding orders have been mostly tor in pensators, magnetically shielded reactors up six- and twelve-operator sets and the vanable- to 33 kV and arc-suppression coils for use on reluctance regulator has been well received. 121- and 38-5-kV systems are also going For DC welding, the output of engine-driven through the shops at the present time. ail single- and twin-generator sets has been well is* A. Reyrolle & Co., Ltd. maintained. ;lw Apart from improvement of design details and standardisation of components that have secured economies in materials and labour, Economic Heating profes the outstanding event of 1944 in their works Thermal Insulation of Buildings is regarded by Reyrolle’s as the commissioning T HE thermal insulation of buildings is dealt f£l ï of 66-kV air-blast switchgear. Other orders with in a paper prepared by Mr. N. t>. in hand for this type of circuit-breaker include B illington for the Institute of Fuel. The some for 110 and 132 kV ; single tuiTulators calculation of the thermal “ transmittance ot a are employed with gear for normal breaking structure is discussed, the author s formulae capacities and double turbulators for the indicating -that resistance to loss may be im­ proved by the employment of materials of low higher ranges. . conductivity; a valuable degree of insulation Orders for power-station switchgear up to results from the provision of closed air spaces, 33 kV and 1,500 kVA have been executed, irrespective of the materials used to form them. I p e while the demand for the metal-clad type Some of the properties of different kinds ot with horizontal draw-out circuit-breakers for insulating substances are briefly reviewed. 3-3 to 33 kV and 75 to 1,000 MVA continues. Proper insulation can lead to economies in the A 75-A contactor for motor starting has been size of heating plant needed as well in the added to the range of switch-and-fuse distri­ amount of fuel consumed and, in some cases, 8ÉI bution gear, substantial quantities of which may even reduce the total capital cost of a new fool building. There is, however, a limiting thick­ dpn have been supplied for AC welding in ship­ ness of insulation beyond which the increased yards, among other purposes. Marine work nit cost will exceed the estimated saving and the m in progress includes control gear and motor- economic thickness needs to be evaluated tor boosters for a number of electrically propelled each building according to individual cir­ 10,000-ton single-screw vessels. cumstances. 1 A growing volume of orders from overseas Insulation of the walls and roof of a building 9 is reported. One example is provided by has a material influence on the temperature of the surfaces of the building; hence it affects the twenty-seven 750-MVA metal-clad units of feeling of warmth and sense of comfort of its the horizontal-draw-out compound-filled type occupants, while the exclusion of solar heat for indoor use at a 22-kV terminal switching is an important aspect of the subject. In cases station in Victoria, Australia ; the arrange­ of intermittent heating the inner surfaces of the ment calls for five-fold physical and electrical building should preferably be lined with separation. A second is a contract for all m aterials of low therm al capacity, w hich will the switchgear required for a new power also tend to reduce the nuisance of temporary condensation of moisture on interior surfaces. station in Southern Rhodesia by the Elec­ T he increasing em ploym ent o f insulation will tricity Supply Commission call for modifications in the design of heating A considerable amount of 66-kV, appliances to enable low outputs to be attained MVA and 132-kV, 1,500-MVA pneumatically with good efficiency as well as to allow close operated small-oil-volume swltclJSear control of the actual output. been sent to Australia. Among the equip The pdper ends with a bibliography of 35 ment supplied to the U.S.S.R. are 400 6-6-kV references to the literature of the subject. January 12, 1945 E l e c t r ic a l R e v ie w 47 CORRESPONDENCE Letters should bear the writers’ names and addresses, not necessarily for publication. Responsibility cannot be accepted for correspondents’ opinions. Educational Opportunities sidering the revised examination regulations should also study the first and second Reports WT seems appropriate that the letter from and the model papers for Joint Section “ A,” *• Mr. W. C. S. Phillips in your issue of particularly the revised papers in “ Applied December 29th should be followed by the Heat (with Light and Sound) ” which were one from “ Graduate I.E.E.” The former issued shortly after the publication of the indicates that it is no mean performance for original model papers. The revised model a part-time student to obtain the Higher papers may be obtained free of charge by National Certificate, whilst the latter indicates those who have already purchased copies of how much value the employer attaches to it. the original papers. The case of “ Graduate I.E.E.” is not an Those concerned in these problems may be isolated one. I, for instance, find myself with assured of ready sympathy in the appropriate a Higher National Certificate in one hand committees of the Council, by whom written and a bag of tools in the other. The chance communications on specific points are always of promotion to a technical post or even to welcomed and given the fullest consideration. foreman is remote, although some of the London, W.C.2. W. K. Brasher, technical assistants employed by my firm are Secretary, without technical qualifications. During this Institution of Electrical Engineers. war I have been offered two technical posts [A review of the second Report mentioned by of some importance elsewhere, but my em­ Mr. Brasher appears in this issue.—Editors, ployers with the aid of the Essential Work Electrical Review.] Order have refused to release me. I should be glad to know the views of the Compulsory Registration profession regarding the Higher National WPEFERRING to Mr. Cureton’s letter on Certificate. In my opinion, obtaining it is this subject in your issue of December just an interesting hobby, and future candi­ 29th, I think it is as well to remember that dates should be advised of this before they the maintenance engineer in most factories embark upon their five years’ course. and works is responsible for a number of A n o t h e r G r a d u a t e . services, as well as plant, and therefore has to have some knowledge of all of them and I.E.E. Examinations cannot specialise easily in any one. It is only WN view of the recent correspondence on the in larger and less numerous establishments new regulations for the associate member­ that the electrician can stick to his trade and ship examination, it seems advisable to explain does not have to attend to other emergencies that it was realised that the raising of the which arise. educational requirements for graduates of the The proposed scheme for compulsory Institution might not universally be regarded registration of contractors and operatives as the most appropriate first step in bringing applies also to “ others engaged in or upon aboutthedesired improvement in theeducation electrical installation work.” It also provides of professional electrical engineers, but there for a Licence “ F ” to apply to “ any person were strong reasons for first defining the employed at any works or other places and necessary qualifications for graduate and engaged upon maintenance or other similar corporate membership. work,” so that it will be seen that the main­ The difficulties in meeting these require­ tenance engineer is provided for, as in fact are ments by the existing system of part-time all others in the contracting industry under technical education were, however, fully Licences “ A ” to “ F.” appreciated, but it was also clear that they To overcome the difficulties of installation could, and ought, to be surmounted if the work in factories or works being carried out future of British engineering was to be assured. by other than specialists, managements might This subject had already been discussed in the be well advised to call in a contractor who first Report on Education and Training for specialises in additions and repairs to factory Electrical Engineers which was issued in installations. Many do already. 1943, and a second Report has just been I cannot agree with the suggestion that published which deals in more detail with compulsory registration might produce a the problems of part-time further education shortage of contractors; the reverse is likely at technical colleges. The high regard in to be the case. The trouble at present is which technical college work is held and the that a number of people undertaking wiring importance attaching to it are, it is hoped, work are in no way entitled to be termed fully apparent in that Report. electrical contractors. The qualified con­ I would suggest that those who are con­ tractor recognises certain advantages of 48 E l e c t r i c a l R e v ie w January 12, 1945 working under a consulting engineer but apparatus and wiring will have been reduced to £30,000, while the estimated present-day value many shoddy bits of work arise from of the equipment still in the Corporation s extensions to an otherwise good job which possession, without taking purchase tax into do not warrant the employment of a con­ consideration, is £232,800. Hire charges for sultant. I would also remind your con­ 1945-46 are estimated at £27,000. tributor that many contractors are members During the war a considerable number ot of the I.E.E. while many others are equally domestic appliances have been removed from well qualified in other directions. vacant premises for use elsewhere, but the t h in k wiring remains in these houses and represents I that there is no adaptation of a potential demand. Mr. Johnson estimates, the existing systems which will make for example, that 4,000 new water heaters unnecessary' the operation eventually of will be needed in the early post-war period. some scheme of compulsory' registration. He has been informed by the Board of Trade Any consulting engineer would much prefer that licences have been issued for substantially to work with a qualified contractor employing increased supplies, and that before long it is qualified operatives rather than battle through anticipated that these will be adequate. A change in the method of issuing accounts a job with a so-called contractor who cannot is proposed in consequence of the growing “ make the grade ” owing to inexperience, popularity of the all-electric house. Accounts or w'ho attempts to make a profit out of are assuming large proportions, and it is a cut price. suggested that they should be rendered monthly. Hereford. J. P. Inglis (E.C.A.) Th~is would avoid a large demand for expensive prepayment meters and offer definite advantages Fuel and the Peak in the w ay of service and promotional activities. Tabular information shows that 45,566,000 N authority on London’s electricity kWh was sold last year. This was an advance 4 states in the Sunday Express of January on the previous year (39,383.000 kWh) but 7th that the crisis in electricity supply has still falls far short of the 1938-39 total of been due to low-grade coal being foisted on 70.652.000 kWh. Income from the sale of electricity amounted to £268,749 and total the generating stations and, as a result, the income to £301,186. There was a deficit of capacity of the plant available has been £28,418 on the year's working, making the reduced by one third and this applies to aggregate amount charged to rates since the 95 per cent, of our generating stations. beginning of the war £99,874. A note on the The British Coal Utilisation Research undertaking's Diesel plant states that the cost Council in November, 1943, held a con­ of fuel has risen from £3 17s. 3d. to £9 5s. 8d. ference of the leading fuel engineers and in ten years; the plant, however, is in good users of fuel on the utilisation of small coals, condition and the saving in bulk supply charges which fell to less than £5,000 in 1942 may well and blending was stressed as being the most be increased again to over £12,000. important factor in the utilisation of small coals. It wras also stated at that time that E rith large blending plants in London were not Pillar graphs are used to illustrate the principal being used to their capacity. In December. trading statistics of the Erith undertaking 1943, a summary of the conference proceed­ (engineer, Mr. E. A. Logan). These show that ings was published. Perhaps if a closer total sales of enerey have increased from study had been made of this, and action 32.306.000 kWh in 1938-39 to 45,227,000 kWh taken prior to December, 1944, we should last year. Although the annual value of still have had the margin originally planned domestic electrical appliances sold has been drastically reduced (from £12,560 to £2,112), by the engineers who created the grid. domestic electricity consumption has continued Worcester Park, E. H. Whatton, its upward-trend, advancing from 12,917,000 to Surrey. A.M.LE.E., Minst.F. 19.292.000 kWh. From only a hundred cookers connected in 1936 the number was increased by the undertaking's active development work to Municipal Reports 4,616 in 1940, since when there has been little change, the present number being 4,655. Southend-on-Sea Electric water heaters, of which there were sixty OW the undertaking’s domestic electrifica­ in 1936, numbered 1,900 at March 31st, 1939, H tion policy before the war has laid the and reached a " peak ” of 3,396 in 1942, receding foundations for future successful operation is to 3,056 at the end of March lasL shown in the 1943-44 report of Mr. A. C. The undertaking's accounts show that from Johnson, borough electrical engineer and £109,377 in 1938-39 revenue from the sale of manaaer at Southend-on-Sea. energy increased to £189,291 in the past year, A table shows how domestic apparatus and while total income rose from £115,171 to wiring purchased by the Corporation between £202,627 and expenditure from £91,295 to 1934'and 1939 has been disposed of. Ap­ £146,257. In 1938-39 a contribution of £300 paratus remaining in the possession of the was made to the rates, althoueh this meant Corporation is still in good condition and carrying forward a debit balance of £562. In as it embodies the latest improvements, such as the following two years there was no rate aid, thermostatic control of cookers and high but contributions were resumed in 1941-42 and loading of water heaters, it is not likely to l&st year £4,142 w as allocated, leasing a balance become out-of-date. By 5iarch next the of £19,587 to be carried forward after trans­ original capital expenditure of £224,000 on ferring £1.032 to reserve. January 12, 1945 E l e c t r i c a l R e v ie w 4 9 PERSONAL and SOCIAL News of Men and Women of the Industry

HFIHE principal items of electrical interest in the (Standard Telephones & Cables, Ltd.); Mr. New Year Honours List were given in our R. C. Hill (Metropolitan-Vickers); Mr. D. last issue. The second instalment contained Hodgson (Cammell Laird & Co.); Miss F. B. the names of many men and women who had Kiff (Osram Lamp Works, Ltd.); Mr. J. F. been awarded the O.B.E. Among them were King (London Electric Firm); Miss M. King Mr. M. T. Greenwell, assistant general secretary (Telegraph Condenser Co.); Mr. E. Manns of the Electrical Trades Union ; Mr. B. Haviland, (North-Eastern E.S. Co.); Mr. W. Morrison (A. & R. Brown, Ltd.); Mr. H. Neal (E.M.I. Research Laboratories); Mr. F. B. Nightingale (De La Rue Plastics, Ltd.); Mr. J. H. Nixon (Robson & Cole­ man); Mr. H. Poulton (Marconi’s Wireless Telegraph Co.); Mr. C. Price (Brush Elec­ trical Engineering Co.); Mrs. D. E. Simcock (Marconi’s Wireless Telegraph Co.); Mr. H. E. Smith (Bush Radio Ltd.); Mr. H. Ten­ Messrs. S. C. Laws, F. Smith and M. T. Greenwell who receive the O.B.E. nant (Dover Electricity Dept.); Mr. K. War­ works controller, S. Smith & Sons (England), wick (Philco Radio & Television Corporation); Ltd. ; Mr. S. C. Laws, principal of the Northamp­ and Mr. A. S. Wilson (Rosyth Dockyard). ton Polytechnic ; Mr. F. Smith, general manager, Alderman W. Walker, who as announced last M.O. Valve Co., Ltd. ; Dr. F. C. Williams, week receives a knighthood, asks us to thank principal scientific officer, Telecommunications all the members of the electricity supply industry Research Establishment, Ministry of Aircraft and others for their congratulations, as they are Production ; and Mr. R. O. Herford, managing so numerous that it is not possible for him to director, Renold & Coventry Chain Co. deal with them individually. Among those who are made members of the Mr. L. A. Catlin has retired from the position Order of the British Empire (M.B.E.) are the of general manager of the E.M.B. Co., Ltd., and following:—Mr. H. R. Angelí (Westinghouse has resigned his seat on the board. Brake & Signal Co.); Mr. W. Bird, M.I.E.E. Mr. A. E. Marchant, M.Sc. Tech., who in 1940 (chairman St. Albans District Committee, was appointed deputy borough electrical M.O.P. Eastern Regional Board); Mr. S. H. engineer and manager at Barking, is to succeed Brewell (A. H. Hunt, Ltd.); H. F. Buckmaster Mr. A. B. Catling as “ chief” on his departure (McMichael Radio, Ltd.) ; Mr. J. Bunyan to take up a similar post (Allen West & Co.) ; Mr. G. Casemore (lately at Willesden. Mr. Mar­ telephone manager, Tunbridge Wells); Mr. F. chant, who was born in Clark (British Oxygen Co.) ; Mr. W. F. J. neighbouringWest Ham, Dowley (Enfield Rolling Mills (Aluminium), is only thirty-eight. He Ltd.) ; Mrs. E. L. J. Gambazzie (Telegraph was educated at Stret­ Condenser Co.) ; Mr. F. O. Hickling (Ransome ford Grammar School & Maries Bearing Co.) ; Mr. J. H. McFarland and afterwards served a (Cammell Laird & Co.); Mr. A. G. Newman three years’ apprentice­ (Wireless Telegraph Section, G.P.O.) ; Mr. A. G. ship in the workshops Pearce (G.E.C. Research Laboratories); Mr. and drawing office of the H. C. Perry (Normand Electrical Co.); Mr. Lancashire Dynamo & R. G. PoweH (Decca Radio & Television, Ltd.); Motor Co., Ltd. Traf- Mr. J. M. Sinclair (A.I. Electric Welding ford Park, and later with Machines, Ltd.); Mr. H. S. Walker (head of Manchester Corpora­ Valve Dept., B.B.C.); Mr. K. M. Whyte tion Electricity Depart­ (General Electric Co., Ltd.); and Mr. J. Woold­ ment. He then took a M r. A. E. M a rc h a n t ridge (Johnson & Phillips, Ltd.). three years’ course at The British Empire Medal (B.E.M.) has been Manchester University, followed by a year’s awarded to the following :—Miss S. Alston (M.O. research work on high-voltage transmission Valve Co.) ; Mr. A. Andermahr (A.C. Cossor, problems. He subsequently joined the Mid- Ltd.); Mr. W. C. Brown (Hoffmann Manu­ Cheshire Electricity Supply Co., Ltd., as assistant facturing Co.) ; Mr. B. Chambers (E. N. Bray, mains engineer and in 1932 went to Warrington Ltd.) ; Mrs. E. Chipps (Joseph Lucas, Ltd.) ; as technical assistant to the borough electrical Miss C. M. Cooper (Rist’s Wires & Cables, engineer, taking over the consumers’ side of the Ltd.); Mr. A. J. Coventry (S. Smith & Sons undertaking in 1938. He is an associate member (M.A.), Ltd.); Mr. W. A. Dawson (Whiteley of the Institutions of Electrical and Mechanical Electrical Radio Co.); Miss A. S. Forster Engineers. January 12, 1945 50 E l e c t r i c a l R e v ie w The Midland Electric Manufacturing Co.’s knowledge to equip themselves for the d Social and Athletic Club held its annual Christ­ by evening study alone; they should be r mas dinner and concert on December 20th. from the factory at least one day a w Mr. T. Birkett, director and former general supplement their evening studies M J? j manager, presided and made awards by the who also responded to the toast, briefly company for long service. This year twenty- the history of the old Crypto Company, founded two members were admitted to the M.E.M. “ gold watch brigade ” on completing ten years’ In proposing a toast to the apprentices, one service with the company, including Mr. G. of the sponsors, Mr. L. E. Saker, said there was Smith, an employee in the foundry recently great scope in industry for them, ^gcly due repatriated from a prisoner of war camp in to the development of electricity for heat, light Germany. Seven employees were also presented and power. The senior apprentice, Mr. J r . J. with illuminated addresses to mark the com­ Uphill, in reply, expressed his appreciation of pletion of twenty-one years’ service. the guidance given by the sponsors and thanked the technical institutes through Mr. Laws tor Mr. R. LI. Rees has been appointed chief their study facilities. , , „ . chemist to the London Power Co. in succession The final toast, “ The Works Executives to Mr. G. W. Hewson, who has retired. was proposed by another apprentice, Mr. J. B. A comprehensive apprenticeship scheme has Groocock. Mr. J. A. Brown, the production been prepared by Lancashire Dynamo & Crypto, manager, and Mr. F. Paradine, one of the Ltd., and will be put into operation immediately foremen, responded. after the war. Meanwhile, the various enter­ Mr. F. C. Fuke, A.M.I.E.E., has been elected prises comprising the group are showing keen to the board of the General Accessories Co., interest in their apprentices. At the Willesden Ltd., Bristol. In consequence he is relinquishing works a successful experiment was tried some the position of general manager of British time ago whereby a sponsor was appointed^ for Mechanical Productions, Ltd., but will continue every apprentice to act as “ works father ” to as the company’s chief electrical engineer. Mr. his charge throughout the indenture period. Fuke’s headquarters remain at 1, Church At the Gayton Rooms, Harrow, on December Road, Leatherhead, Surrey, the registered office 29th apprentices, sponsors and other senior of both companies. |Both British Mechanical executives met together for their second annual Productions, Ltd., and the General Accessories dinner under the chairmanship of Mr. W. G. Co., Ltd., are members of the Philco group. Swain, one of the company’s directors. The guests included Mr. S. C. Laws, M.A., M.Sc., At the sixth annual general meeting of the principal of the Northampton Polytechnic, Coventry Electric Club on January 2nd at the and Mr. J. G. Shaw, vice-chairman of the Electricity Showrooms, Mr. F. W. Godden, company. Mr. H. W. Bosworth, managing chief electrical engineer and manager, was director, sent a message regretting his inability returned unopposed as president for the coming to be present and expressing his enthusiasm season. The Club membership now numbers for all that could be done to further the interests 125. As an indication of interest in the of the apprentices. Club’s lectures, it was mentioned that a letter Mr. D. C. Lorkin, joint general manager of had been received from South Africa asking the Willesden organisation, in proposing a for further details of one given on “ Earthing."

Lancashire Dynamo & Crypto apprentices and sponsors at their second annual dinner toast to “ The Guests,” welcomed Mr. Laws, as the peculiar circumstances prevailing in that who for forty years had played an important country caused the electrical undertakings part in the education of the potential practising some considerable trouble. ena neer, and Mr. Shaw, their former chief. Replying, Mr. Laws appealed to the appren ices Long-service certificates were recently pre­ sented to thirty-two employees of the Brush to cultivate as many interests as they could Electrical Engineering Co., Ltd., who have left literature, politics and the arts, saying that a the company’s service during the past two years. sinele-track mind would not get them very far. One of them, Mr. J. E. Grey, had fifty-four He contended that it was impossible for appren­ years’ service. The presentation of the certi­ t i c e s t o aCquire the appropriate technical 11 ö January 12, 1945 E l e c t r ic a l R e v ie w t W ltk ficates was made by Mr. Alan P. Good, managing Obituary « l e a s t ! director, and the recipients were entertained to w e e l lo luncheon, during which a concert was given by Mr. H. G. Hughes.—We regret to record the t . S t e ^ the works choir, the Brush Military Band and death in his sixty-eighth year of Mr. H. G. wÄwm vocalists. Seventeen long-service certificates are Hughes, who was for many years with Siemens . i o r n l o j also being presented to the next-of-kin of Brothers Dynamo Works, Ltd., and subse­ employees who have died. quently with the English Electric Co., Ltd. “ WS, OS' The Erith Electricity Players (mainly past and The latter part of his business career was spent ' i f a e j i i present members of the staff of the Corporation with the Electrical Research Association and latgely i ( Electricity Department) won further laurels by after retiring in 1937 he devoted much time to their presentation of the the E.I.B.A. as a voluntary worker. On the • M r. H j satirical comedy “ The outbreak of war he took up a position in 'i K i a i i n j Torch Bearers ” on Coventry with H. M. Hobson, Ltd., and was M l t k u l j December28th and 30th. active to the last. k L w s ji The play was produced Lieut. J. N. Campling.—We regret to learn by Mr. H. A. Stephens. that Lieut. (E.) J. N. Campling, M.B.E., R.N., i i a t s i son of Mr. P. G. Campling, chief engineer and faVitl As reported in our last general manager of the Bedford Electricity ä* fc i issue, Mr. L. Drucquer, Department is reported missing and is presumed ,e, oue of 13 M.I.E.E., has been to have lost his life on active service. He was appointed manager of serving in the destroyer H.M.S. Aldenham the switchgear depart­ ^teaefe; which was lost due to enemy action. ment of the British Lieut. Campling obtained his B.Sc. degree at teaiisCi Thomson-Houston Co., Pimpfe London University, was an associate of the Ltd., in succession to City and Guilds Institute, and a corporate s ? l of f e ­ Mr. C. B. Kingsford, ilt ifflcocsä member of the Institutions of Electrical and who has retired. We M r. L. D ru cq u er Mechanical Engineers. Before volunteering il i n j » . | now reproduce a por­ 11 I, (fe for naval service, he was on the staff of Preece, trait of Mr. Drucquer, who has been with Cardew and Rider. He had seen service in most HSffiiE the company since 1920 and was responsible theatres of war, including Dunkirk, Narvik, and s ä M i d i i « ! for the erection of the first rotary substation the Mediterranean, and was awarded the M.B.E. m l t a s « on the London Underground Railway. for enterprise and skill in salvaging his ship S t o p p . Capt. (temporary Major) G. J. S. Drury, R.E. after it had been engaged in the operations 1 meaijii of b has been awarded the M.B.E. for gallantry and which culminated in the capture of Sicily. m b ¿¡14 distinguished service in Italy. Major Drury Mr. B. S. Hornby.—We regret to report the F . 'S , ( * has been a member of the Newcastle office staff death on December 30th, at the age of seventy, of UlliS, C of the B.T.H. Company since 1930, and is well Mr. Benjamin Shuttle- i t f o t k n a t known on the N.E. coast, especially in con­ worth Hornby, for p no« «nie nection with colliery electrification. He joined thirty-six years chief nteresi ii a the T.A. 50th Division in 1931. assistant electrical en­ ted t a u t e Miss Caroline Haslett, director of the Electrical gineer to Bolton Cor­ li A f iia sfe Association for Women is visiting Sweden to poration. He retired in n'M ü lecture for the British Council. 1936. Mr. Hornby was Mr. F. H. Brandreth has retired after thirty-six educated at Dunstable years’ service with Edmundsons Electricity Grammar School, re­ Corporation. He is to be succeeded as manager ceiving his mechanical of the Urban Electric Supply Co. at Grantham engineering training at by Mr. R. H. M. Barkham, B.Sc., A.M.I.E.E., the works of Phillips & who has been in Grantham for eighteen months Co., London, S.W. looking after the interests of the Edmundson From 1894 to 1897 he Corporation in this area. Mr. Barkham joined served with Mr. J. G. W. the organisation as a technical assistant at Aldridge, A.M.I.C.E., T h e la te Stowmarket about fourteen years ago. He the Southern Railway M r. B. S. H o rn b y later became personal assistant to the managing at Southampton Docks, director of the Corporation, Mr. A. Anderson. and the Southampton Harbour Board. Then for two years he acted as electrician-in-charge to the Mr. R. J. Spicer has retired from the position Bradford Corporation at the start of the Valley of general manager of the switch works of Road Works and the supply for traction, joining Laurence, Scott & Electromotors, Ltd., after the Bolton Corporation as engineer-in-charge forty-six years’ service with the company. in 1899. Mr. H. Worship, formerly manager of the instru­ ment department, will take over the manage­ Mr. P. K. O’Brien.—We regret to learn from ment of the whole Thorpe Road branch works. Murphy Radio, Ltd., that Mr. P. K. O’Brien, Mr. Spicer joined Laurence, Scott & Co., Ltd., assistant managing director of the company, as it was then, in 1898, and has been associated died on December 31st after a brief illness. with much development work, particularly in Mr. G. A. G. Davies, a director of Davies, Kent connection with variable-speed DC equipments & Stewart, Ltd., died on December 31st, at the and in marine motor control gear of various age of seventy-three. kinds. When the switch works was built about twenty years ago to handle the growing control gear business, he was largely responsible for the Will.—Mr. H.. W. Lee, chairman of the Superheater Co., Ltd., director of the Chloride o f l a v e w works layout. He was appointed works manager in 1929 and general manager in Electrical Storage Co., Ltd., and late managing two y e ® 1939, and will continue to assist the firm in a director of J. Stone & Co., Ltd., left £264.342 ßfty-W (net personalty £232,434). the «ni- consultative capacity. January 12, 1945 5 2 E l e c t r i c a l R e v ie w RECEXT EVERODECTIOXS Notes on New Electrical and Allied Products

sufficient weight to enable it to stam1 b -> Speed Strobolyser holes being provided for floor bolts and a sere - STROBOSCOPIC equipment for the investi- clamped rod for raising the head, which carries ^ gation of recurrent motion and the measure­ adjustable fingers for accommodating strip ment of rotation and reciprocation, or oscillation material of different widths. A compression time, is now being made by W atford Instru­ spring with a locking collar acts as an adjustable m e n ts , Loates Lane, Watford, Herts. brake, the rim of the head is removable and all Model B is a mains-energised multivibrator small adjusting bolts have tommy-bars. Lighter with means for varying its speed of actuation, models for supporting smaller coils are available. adjustment being aided by a dial graduated in flashes per minute. An electronic relaxation Plastic Clips oscillator is employed to drive a tubular (neon discharge) lamp mounted in a reflector built into Neatly fashioned cable and pipe clips made of a plastic substance under the trade name of the welded steel case (9 in. cube weighing 15 lb.) “ Plasklip ” are suitable for a great variety of fixings including the anchoring of extensive wiring systems. They are of superior strength, although resilient, and are claimed to be proof against weather, rust and rot. Their insula­ tion value is high and electrolysis can n o t occur at the fixing points. The edges of these clips are rounded to avoid any risk of chafing the wires. A range of circular clips is available at present Front and back views of the Strobolyser while special sizes and shapes can be produced. fitted with a carrying handle and rubber feet. The manufacturers of these devices are the Releasing two special nuts permits withdrawal Insuloid M anufacturing Co., Ford Street of the welded steel chassis on which are mounted Mills, Chestergate, Stockport, whose London the valves, silver-mica condensers and associated representative is Mr. F. C. Brian, 44, resistances, so disposed as to be least affected Petherton Road, N.5. by heat. The circuit is designed to be as insensitive as possible to ageing effects and Motor Gears mains voltage fluctuation as well as for con­ To meet the demands for a smaller size of stancy, the graduated dial ofot each eacn instrument “ Radicon ” w orm gear to transmit from frac- 1being - • individually___I : • J ___11.. nnKLmforl calibrated onninct against frpn frequency Iipnrv tional up to about 24 HP (according to ratio), substandards by stroboscopic means. A call- David Brown & ’ bration-checking circuit is incorporated, utilising S o n s ( H u d d e r s - magic eye ” oscilloscopic tube of the form field), Ltd., H ud­ used for radio receiver tuning. dersfield, Yorks, have This indicator is fed with a small voltage introduced an addi­ derived from the mains input as well as a fraction tion to their range. of the output voltage from the neon lamp. The It is styled the 2£ two voltages beat together, causing the indicator Radicon worm re­ to open and close ; the frequency of movement ducer and isavailable of the indicator is zero when the lamp output in a comprehensive matches the input frequency (501 c/s or multiples range of ratios, six of thereof) which corresponds to 3,000 flashes per which can be dis­ minute, two drift correctors being provided at patched from stock. the bottom edge of the front panel for adjust- It retains many of ment by screwdriver. the characteristics of the larger models, Heavy-coil Holders but, on account __of A nedestal holder, known as a “swift,” intended the lower peripheral to carry a coil of strip metal weighing up to velocities and the Speed reduction unit ? cv,t with a quadrant top adjustable at any generous radiating ände from the horizontal to the vertical for surfaces, it has been shown by prolonged tests fo o dino inclined Dresses is made by F r a n k that supplementär)' fan cooling is unnecessary, rrr O Robinhood Lane, Sutton, even when the gear is used in conjunction with The pedestafhas a circular cast base of high-speed motors. January 12, 1945 E l e c t r ic a l R e v ie w 53 Power Engineers’ Salaries Upward Revision from January 1st â 6nnh, ilsili 4 S was stated in last week’s Electrical In the table column (a) gives the salary for itktjiij Review the rise in the-cost of living in the the first two years; (b) the salary for the third >“? St; latter half of last year has necessitated the re- and fourth years; and (c) the salary after the IfflpiSj; I Jdjiÿj vision of the salaries of the staffs of electricity fourth year. Employees in the London area ibltlljlj supply undertakings as from January 1st. are entitled to an additional 5 per cent. sri. œnièî Plant Capacity or Maximum Demand in Kilowatts

<0 Class A C lass B C lass C C lass D C lass E F Ct 2 1,000-2 000 2,001-4 000 4,001-6 000 6,001-8 000 8,001-13,000 13,001-25 ,000 25,001-50,000 *Épscs mitai (a) (b) (C) (fl) (6) (c) (a) (à) (c) (a) (*) (c) (a ) (b) (c) (a) (b) (c) (0) (b) (c) ï ' e s s s 1 538 549 561 572 588 605 621 631 641 652 666 681 __ aiioi 2 4/3 482 493 502 518 532 546 556 564 574 588 60?. 616 639 645 ___ s r is J J 431 439 449 45/ 4/1 485 498 506 516 523 537 549 563 569 576 583 595 608 671 635 650 ■Suftèe 4 ill 388 400 411 419 428 435 44/ 459 471 482 493 504 517 518 574 541 557 573 585 596 sat Tt 5 359 367 3/5 384 394 405 415 422 430 436 447 456 467 477 489 499 505 513 519 5 34 548 6 329 340 350 361 36/ 3/5 382 391 402 411 417 424 430 439 450 459 469 477 487 497 506 / 302 311 319 329 340 350 361 366 371 377 386 395 404 417 422 431 435 440 445 458 472 brink 8 302 306 311 316 320 324 329 338 347 356 361 366 371 380 388 397 405 412 4?0 475 429 riinin 8a 285 288 2yi 296 299 302 306 314 321 329 335 341 347 355 364 371 379 386 393 398 404 «ES.S 8b 268 2/1 2 /4 i n 280 283 28/ 293 299 305 310 317 322 330 338 346 353 360 366 377 379 . la-si y — — — — — — 2682/32/8 283 289 295 301 306 314 320 327 333 340 347 354 iïsiæc 9a 268 2/3 279 284 287 290 293 298 302 307 314 319 53 Clllt 10 — 268 270 272 274 276 277 280 785 790 10a 268 273 278 Tïlfci ¡P IRISÉ à 2! SI C lass H C lass J C lass K C lass L C lass M C lass N O t i s i n ■ ■v 50,001 — 100,001- 150,001- 200,001- 250,001 _ 350.001- f ŒErà 2 100,000 150,000 200,000 250,000 350,000 450,000 Over 450 0 0 0 ible t pœ O j e c a l s s (a) (b) (c) (a ) 0b) (O 0a) (¿0 (c) (a ) (■b) (c) (a) (6) (c) (a) Ib ) C C) (a) (b ) (c) 2ü (S iïK 2 3 664 685 705 724 742 759 777 796 814 i e i i c s E î 833 854 875 895 917 938 960 975 991 1007 1074 1040 4 608 622 637 652 667 684 699 717 733 750 768 786 805 824 844 864 878 892 906 970 936 .. Ford Se 5 564 5/3 584 593 608 622 636 652 667 683 699 716 733 751 768 786 799 81? 875 838 853 r io s ilK 6 51/ 531 545 560 5/3 586 600 614 629 643 658 674 691 707 774 741 75? 764 776 788 801 Brui F / 485 493 501 509 522 534 546 560 572 586 600 613 628 643 658 673 684 696 706 718 729 8 433 445 45/ 469 480 491 502 516 527 540 552 565 578 592 606 670 630 640 650 660 671 8a 409 419 429 439 450 460 471 482 493 504 518 529 54? 555 567 581 590 599 608 618 629 8b 385 393 402 410 420 430 439 450 460 471 482 493 504 518 579 547 550 559 567 576 586 9 361 367 3/5 382 390 400 409 418 428 437 448 458 469 480 491 507 510 520 577 536 543 malle; s : 9a 326 334 341 349 358 365 3 /4 383 391 401 410 420 430 440 450 460 468 475 48? 490 497 10 295 301 309 i l l 324 331 339 347 356 364 372 381 389 mil Us b 399 408 417 474 431 437 444 452 10a 283 289 294 300 306 313 319 32/ 335 341 350 359 366 375 384 39? 398 405 410 417 423 ¿IDS tû &■ 10b 268 273 2/8 283 289 295 300 306 313 319 327 335 341 350 359 366 377 378 384 389 396 10c — — — 268 2/3 2/9 284 290 296 301 306 314 320 328 336 347 349 354 360 365 371 11 268 2/3 279 284 290 296 301 306 314 320 325 331 336 341 347 1 la — 268 273 279 284 290 296 301 305 309 314 319 323 li b - 268 273 279 284 288 291 296 300 303

The increase in the cost-of-living index in the stated salaries and in any district where figure, calculated on the 1939 basis, amounts conditions justify lower remuneration a to 30 per cent., that is, six “ cycles ” of 5 reduction of 5 per cent, in the rates can be per cent.; the existing salaries were based made by agreement. on an adjustment of five points. The revised salaries are given in the accom­ Use of Chromic Acid panying table. It should be noted that to Notes on how to use chromic acid economic­ some of the grades specific titles are attached, ally in chromium plating, anodising and such as follows:—1. Deputy chief official; 3. non-electrolytic immersion treatments as pick­ Power station superintendent or mains ling and metal finishing have been issued as superintendent (with charge of substations); Technical Memorandum No. 1 by the Electro­ iion üflH 4. Mains superintendent (without charge of deposition Technical Advisory Committee substations); 7. Shift charge engineer (Class representing the Ministries of Supply and Air­ craft Production as well as the Admiralty. The ogedIi!3 J and over); 8. Shift charge engineer (Classes advice is intended to prevent wastage of chromic oecessai A to H inclusive); 8b. Substation charge acid, which is in short supply, so as to avoid :tioo vote engineer; 9a. Switchboard attendant. restriction of its uses. January 12, 1945 54 E l e c t r ic a l R e v ie w Part-time Technical Training I.E.E. Post-war Planning Committee’s Report

REPORT on Part-Time Further Educa­ engineering materials, use ot economy of effort. , . A tion at Technical Colleges has been Craftsmen destined for day-to-day control prepared by the Post-War Planning Com- of factory administration and production mittee of the Institution of Electrical would receive further education in such Engineers (chairman, Mr J. R. Beard). subjects as foremanship, rate-fixing, time and It is supplementary to the Report on Educa- motion study, stock control, stores, systems tion and Training for Engineers published and machine loading. last year and, like it is the work of Sub­ For the technician group, the existing committee No. 1, of which Dr A. P. M. course for the Ordinary National Certificates Fleming (whose name, as stated in last in Electrical and Mechanical Engineering week’s issue of the Electrical Review, appears should be co-ordinated as a basic course and in the list of New Year Honours as the this should be followed, where necessary, by recipient of a knighthood) is chairman. a course in advanced technology of a type Other members of the Sub-Committee are Mr. already developed by the City and Guilds of H. J. Allcock, Brigadier F. T. Chapman, London Institute. Technicians should Mr. S. E. Goodall, Dr. H. L. Haslegrave, receive instruction in the basic ideas of Mr. D. B. Hoseason, Prof. Willis Jackson electrical and mechanical engineering, with and Dr. E. B. Moullin. no more mathematics than is essential. Since the publication of the first RePorE a new Education Act has been passed which, Intermediate Certificate Proposed it is pointed out, is likely to accentuate the importance of part-time courses. By raising One difficulty of part-time technical the school-leaving age first to 15 years and education as a means of training professional then to 16, the Act (which requires employers engineers has been a lack of courses in the to release youths up to 18 for one whole basic scientific principles. A scheme is dav each week) will eventually bring some outlined which, it is hoped, would markedly measure of secondary education within the increase the ability of professional engineers reach of all young people. who had attended' part-time courses. Pupils who do well in the first two years of the Three Main Groups course for the Ordinary National Certificate should be combined with those who have A fundamental proposal of this second reached the standard of a good school Report is the development of a system of certificate in . mathematics and physics to part-time education that will provide for the undergo a two-year course leading to an needs of three main groups of engineering Intermediate National Certificate designed to personnel, viz. craftsmen (mainly manual skill), technicians (e.g. draughtsmen, erection meet the requirements of Section A examina­ tion of the Institutions of Civil, Mechanical engineers, technical assistants and sem9i testers), and professional engineers (who will and Electrical Engineers. This course would devise methods for the solution of problems lead to the Higher National Certificate in arising out of technological advances and Electrical Engineering and kindred subjects. will control their application in accordance It is estimated that the number of pro­ with scientific principles). This develop­ fessional engineers required per annum by ment should be accompanied by improve­ the electrical engineering industry in all ments in the practical training of apprentices, branches would be 400 from universities which it is hoped to deal with in a later report and 600 from technical colleges. In addition Craftsmen require education of a liberal there would be 1,800 technicians and 3,200 and technical rather than an aca.demic kind craftsmen and foremen from technical and should be trained to deal with the type colleges. The attention of the regional and of problem encountered in their work. There local technical colleges and technical in­ should be a three-year’s course for a crafts­ stitutes should be directed chiefly to part- man certificate followed by a more general time senior and advanced courses and to course of two years in workshop administra­ post-advanced and post-graduate courses tion Mathematics would be minimised and particularly suited to the needs of local would be related to quantities and processes industry. Attention is drawn to the merit of in practice. Much of the teaching, which the “ sandwich system,” under which whole­ would be on qualitative lines rathei. than time training is received alternately in from the more scientific approach of the industry and in technical colleges. Ordinary and Intermediate National Some research and development should be carried out in technical colleges (especially Certificate courses would include■*ewa

Two views of the model kitchen at the exhibition now being held at Oxford

electrically heated drying cabinet ; a radio possible to assist them in their work. The receiver; and an electric clock. Five 5-A model kitchen on view was a dream kitchen plug points are provided above the unbroken and it rested with those responsible whether working table space for the kettle, lron> it was translated into reality. He thought toaster, mixer, etc., and a special cupboard that if we showed the same determination accommodates the vacuum cleaner, brushes in peace as we did in war it could be. _ Visitors to the exhibition are being invited and other domestic equipment. All the cup­ board doors are fitted with magnetic catches to suggest further improvements in the Extract fans (Vent-Axia) have been fixed arrangement of the kitchen. above the cooker, over the sink and at the top of the drying cabinet, which is fitted with two 750-W Belling heaters. Three fluorescent Railway Supply at Liverpool tubular lamps provide excellent illumination The Liverpool Corporation has applied to the without shadow or glare, and low-temperature Ministry of Fuel and Power for authority to convectors have been let into the walls each supply electricity to the L.M. & S. Railway Co. side of the door. Other interesting features for the Liverpool to Southport section of the are a tradesmen’s service hatch; a recessea railway, whether within or without the area of supply of the Corporation. The Liverpool- cupboard for toilet requisites, etc.; ana a Southport railway is electrified. large serving hatch so arranged that access January 12, 1945 E l e c t r ic a l R f.viev\ 57 COMMERCE and IM HSTItl Extra Payment for Boilers. Fees Dispute at Bolton.

E.D.A. Post-war Kitchens ment areas; and the déconcentration of industry and the release of labour and materials. ifc^FICIALLY opening the display of the Thirteen regional controllers, all of them e British Electrical Development Association’s business men, have been appointed, twelve in four model post-war kitchens (see our last week’s the civil defence regions of the United Kingdom issue, page 13) at the Building Centre, Lon­ don, last week, Lord Brabazon, president of the Association, pointed out that they were modern, practical kit­ chens, produced, after a great deal of research

Lord and Lady Brabazon in one of the kitchens and investigation, by experts and they had the approval of the Ministry of Works. Many post­ war appliances were to be seen and he drew particular attention to the merits of the buffet cooker, the use of an overhead reflector fire, and the laundry with its washing machine and and the thirteenth in Northern Ireland. As really adequate drying room. He also con­ already announced, Sir Charles Bruce Gardner gratulated the designers on not putting the plug will be in charge of industrial conversion and points down close to the floor. Sir Philip Warter, Controller-General of Factory and Storage Premises, will be in charge generally Halifax Boiler Plant Contract of the new organisation. Explaining the objects of the new organisation, Halifax Town Council has adopted a report Mr. Dalton, President of the Board of Trade, of the Light, Heat and Power Committee said that it aimed as far as possible at avoiding recommending the payment of £10,440 to the “ Whitehall bottleneck.” It was an Babcock & Wilcox, Ltd., in full settlement of important piece of preparatory planning work the company’s claim for war extras in carrying ready for the cessation of the war against out a contract dated May, 1939, for boiler plant Germany when the functions of the Board of at the electricity station. Alderman Radcliffe, Trade would assume much greater importance who unsuccessfully opposed the recommenda­ than at present. Industrialists were invited to tion, said that the Committee was under no take their problems to the regional controllers legal obligation to pay the extras. The contract immediately. was made in 1939 without any conditions. The Corporation had paid the contract price. Payment for Additional Services The principal topic discussed by Bolton Town All-electric Mobile Canteens Council on January 3rd concerned proposed Liverpool now has two all-electric mobile grants to the borough electrical engineer (Mr. canteens, which, when they take up their stands, H. E. Annett) and some of his staff for extra draw a supply of electricity from street terminal work on extensions at the Back-o’-th’-Bank boxes. Five of these terminal boxes have been generating station. Ultimately, the Electricity provided. Each canteen is fitted with an Committee was given authority to arrange electric stove, an electric geyser and two electric terms with the electrical engineer for his urns for hot water. professional services in the extensions which are to be completed by September, 1946. Industrial Reconversion Mr. Annett wrote that he would not accept any paym ent in respect o f extensions in 1940-'41. To assist firms in their change-over from war The amount offered was considerably less than to peacetime production the Board of Trade is engineers of other authorities had received, and establishing a regional organisation, the four less than the Central Electricity Board would main functions of which will be: The re­ have been willing to pay. It was evident that conversion of industry, with particular reference the suggestion of payment had been reluctantly to engineering; the derequisitioning of factories made, and this together with the prolonged and storage places and the allocation of surplus controversy and ill-informed Press comments Government factories; the distribution of created an atmosphere in every way distasteful industry, with special regard to the new develop- to him. He did not feel justified in accepting January 12, 1945 5 8 E l e c t r i c a l R e v ie w the work and responsibility for the 1946 or county boroughs, is necessary 'foim extensions. Mr. Annett, in declining the offer sought by the established Procedure of joint of £3,000 for the 1940-41 extension, expressed boards or committees. Later in dea g■ . the hope that his action would not prejudice the difficulty of forming s u i t a b l e county districts the position of others who assisted him. It had in sparsely populated a8r;cultural , been proposed to allocate them £2,000. it is suggested that a partial soluB° co^n. Councillor A. Lawson said he was not con­ sometimes be found in establ:Jfkw g vinced Mr. Annett was entitled to ask for a binations of authorities f o r specific purposes penny. The advertisement at the time Mr. housing, water supply “ and so tortn. Annett was appointed contemplated these But it is also noted that the Government extensions and it was too late for Mr. Annett have at present under consideration the future to say he was not obliged to do the work. organisation of the fire service and certain of Councillor Dr. Savage said he had opposed the public utility services. These latter are rn a these payments at the beginning. They were rather different category from the other local now told the issue was whether they should government services and their control is at pay £35,000 to consultants or £5,000 to their present fortuitously divided between municipal own engineer. If that were the issue it would be and private enterprise.” simple. But he saw a more dangerous precedent. In future officials of other departments would New Fluorescent Lamp have to carry out extensions and it would be The latest variety of fluorescent lamp to difficult to refuse extra payments if these grants become available is called the “ Warm-White ” were authorised. In view of the urgency of the and is claimed to possess a mellow sunlight 1946 extensions he agreed to some payment, quality. It differs only in the colour of the but he would fight the principle in future emission from the “ daylight ” type that has developments. been made for the last five years. The new Councillor R. Aspinall considered that the lamp costs the same as the original lamp (the extensions were not comparable with what price of which was recently reduced) and is other engineers had done in the past, because identical with it. Both models are inter­ they were not solely for Bolton’s benefit and changeable without alteration of circuit. Councillor A. Hollas pointed out that when Particulars of the new lamp have been sent us Mr. Annett was appointed there was no Central by the General Electric Co., Ltd., British Electricity Board, and extensions on a large Thomson-Houston Co., Ltd., and Siemens scale were not contemplated. These extensions Electric Lamps & Supplies, Ltd. were for national purposes, and did not come within the terms of Mr. Annett’s appointment. Alderman W. W. Tong said the Council Transformer Brochure could either refuse the extensions—in which A bound booklet of 64 pages, liberally event the C.E.B. would get some other authority illustrated, has been compiled 'to describe the to take over the work—or they could call in a manufacturing methods of the British Power consultant whose fees would be £35,000 and Transformer Co., Ltd., Queensway, Ponders who would himself be able to give Mr. Annett End, Middlesex. It is intended to be a book of £7,000 for his assistance and advice. It was a general reference, between the usual publicity business proposition. If they insisted on Mr. brochure and the text-book. It contains informa­ Annett doing the work and he either resigned tion that is not always readily available as well or the Council terminated his appointment as dealing with some technical aspects of they would not be able to get another engineer design. Several pages of overall dimensions because the Association would boycott Bolton. are included together with an index and Application for Electric Vehicle specimen order-inquiry forms. At a meeting of the Cheltenham Corporation Built-in Switches Electricity Committee the borough electrical engineer (Mr. R. W. Steel) reported that he had A comprehensive technical brochure (No. TL) applied to the Ministry of War Transport for an published by Diamond H Switches, Ltd., additional electric vehicle. The Ministry Gunnersbury Avenue, Chiswick, W.4, should refused, stating that no more electric vehicles serve as a helpful source of reference for designers were available and suggested that the applica­ of appliances having built-in toggle or trigger tion should be renewed in four months. Mr. switches. It covers in 24 illustrated pages many Steel added that he was now taking the matter sizes and types, both metal and moulded up with the Electric Vehicle Association to see varieties, circuit wiring diagrams and fully whether some pressure could be brought to dimensioned drawings being included with bear on the Ministry to secure higher priority mounting details. Ratings range from 3 to 40 A at 250 V for DC and in some cases extend up for the supply of the vehicle. to 660 V for AC. Local Government White Paper Calendars No direct reference to electricity supply is to be found in the White Paper on Lofal “ Cornered,” a portrait of chessplayers, Government in England and Wales during t e illustrates the calendar of Fitter & Poulton, Period of Reconstruction (Cmd. 63/y, Ltd., Vincent Parade, Balsall Heath, Birming­ Stationery Office, 4d.) although there are men­ ham. Monthly sheets are provided. tions of services which might be taken to include A novel continuous calendar sent by Easco electricity In a consideration of wider admims- Electrical Service, Brighton Terrace, London, S e areas it is stated that the Governmen S.W.9, permits instant computation of the exact mrwiders that where co-ordination ot services time in weeks and days between one date and between two or more areas, whether counties another. 5 January 12, 1945 E l e c t r ic a l R e v ie w 14 be ' ME The Davenport Engineering Co., Ltd., the principal item—£215,548 (against £407,568 8«i4 Bradford, has sent us a calendar with sheets in 1943). The United States was the chief fatties showing three months at a glance. supplier (^111,978); the United Kingdom’s SMfc_ share was Valued at £78,663 and others came i aig Mass Radiography at G.E.C. Works from Canada and Australia. Electric motors S to;. were valued at £77,194 (against £67,371), the (We- A mass miniature radiography apparatus principal suppliers being the United Kingdom made in this country by Watson & Sons (£64,021) and Canada (£7,224). The value of 'irnsgT (Electro-Medical), Ltd., has been installed imported lamps was £28,751 (United Kingdom, ihs fag. temporarily by the cenij ■ Birmingham City Cor­ etareis, poration at the G.E.C. oihsr ^ Engineering Works, M il Witton, Birmingham, IffiEjE for the examination of the large personnel em­ ployed there. The ap­ paratus is installed in a building originally in­ tended as a gas decon­ inn-wig' tamination centre which low Sj£r lendsitself to the purpose otortfi very well. T.V.A. Film all® , 2 We are informed that the film recently issued by the American Office of War Information portraying the develop­ Lin m ment of the T.V.A. asdfes scheme can be borrowed free of charge on ap­ plication to the hon. lire director, American and British - Commonwealth ges. Association, 18, South ' d e s c a t n Street, London, W.I. BriDih h The film, which shows Mass radiography apparatus in use at the W itton works ray. fez the construction of the beat*»: numerous Tennessee Valley dams and describes £25,036), against £22,747. Radio imports were sual ¡zz the main advantages accruing to the population, valued at £284,899 (against £129,496). The i a i u s i a n is of considerable scientific, agricultural and United Kingdom’s share showed a substantial m i “ ^ scenic interest. increase as did that of Australia. 1 aspeco i n JimMC* ■ Trade Publications TRADE MARK Dover Engineering Works, Ltd., Watford By­ pass Road, Watford, Herts.—Illustrated and APPLICATION dimensioned catalogue of Elkington “ Gatic ” PPLICATION has been made for the regis­ covers and frames of different types and forms tration of the following trade mark. IliK(No.L for street manholes, underground transformer AObjections may be entered within one month ndsi chambers, switchroom floors, subways and from January 3rd :— ducts. W.i, «• B i r c h . N o. 623,247, Class 9 and No. i for dap Easco Electrical Service, 6, Brighton Terrace, 623,248, Class 11. Electrical resistances and de or tn? Brixton, London, S.W.9.—Four leaflets briefly electrical heating elements.—H. A. Birch & specifying a life-jacket light to assist marine Co., Ltd., Willenhall, Staffs. rescue, a watertight Morse signalling torch, a raft or buoy light and a portable search floodlight, all battery operated. Zinc Alloy Die Casters’ Association, Lincoln INFORMATION isesffl!-. House, Turl Street, Oxford.—Technical folder DEPARTMENT giving information about the specialised subject of welding zinc-alloy die castings. ^ GENERAL inquiries from readers relating Copies can be obtained by bona fide appli­ to sources of electrical goods, makers’ cants from the companies concerned. addresses, etc., are replied to by our Information Department through the post. Inquiries 4 Pooits should be accompanied by a stamped addressed New Zealand Electrical Imports envelope. i, Bir®3 During the June quarter of last year electrical Our extensive records enable us to reply to apparatus (excluding radio) valued at most queries, but occasionally we ask for our by E i* £N.Z. 1,125,570 was imported into New Zealand, readers’ assistance in tracing names and low- as compared with £836,942 in the corresponding addresses not known to us. We should be glad 'the t * period of 1943 and £479,084 in the second to have information regarding the makers of:— date is quarter of 1942. Insulated wire and cable was “ Super Magnum ” heater for curling tongs. January 12, 1945 E l e c t r i c a l R e v ie w 6 0 Advice will be given by a Career up0n Severn Barrage Section upon the choice of a care „„hlished the training for it; handbooks are to P - Conclusions from Tidal Model on the subject. Advice will also be obtainable T a meeting recently arranged by the South by those who propose to invest capita.1 jtt es Wales and Monmouthshire Bulk Supply enterprises. The existing advisory comm. ees AAssociation in Cardiff Dr. J. Jordan gave anon public utilities, electrical engineering, address on the experiments earned out between scientific research, etc., have aSreed 1Q?6 and 1933 by Professor A . H . yioson, tinue their work. The Appointments Depart D.Sc., Professor of Engineering in the University ment will work in close co-operation with of Manchester, with a tidal model of the Severn university appointment boards ana tne operation of industry and commerce will be E1 t "had been contended that a barrage in the welcomed in the Department s endeavour to estuarv would so reduce current velocities ensure that the best use is made of specialised that serious silting would be caused in theports knowledge and ability. and their approaches. Professor Gibson Close attention is being given to the prospects showed by means of his model that below the of post-war overseas jobs and contacts are barrage there would be no interference with being made with the appropriate Government shiDpfng while above it, after a moderate Department and with undertakings having amount of dredging, the channels would be at overseas establishments. feast as good at high water and considerably To meet the needs of the Service man and better at other states of the tide. Moreover woman an expert Inter-Service Advisory with a barrage the tendency to flooding in the Committee is being set up and a special section upper estuary would be brought completely has been opened in the London Appointments Office for the purpose of placing ex-Regular UrThese°conclusions, said Dr. Jordan, had not officers in suitable employment when theyTeave been generally accepted by the interests con­ the Services. Attention is drawn to the existence cerned mainly because they mistrusted evidence of the further education and training scheme drawn from models, particularly as regarded for Service men and women with little or no the exaggerated vertical scale. After explaining experience who wish to train for a professional indetail the basis on which the model was constructed and operated, Dr. Jordan said CaiVovision is being considered fqr those who that it was incorrect to criticise the conclusions have developed their abilities during their war with reeard to silting on the grounds of distortion service to enable them to take higher positions scale8 The effect of this distortion upon their discharge. Help will also be given was to produce excessive shoaling at certain to the many men and women who will have points of the model and hence would tend to neither an occupation nor a job overestimate the amount of silting likely to the Services and the co-operation of employers result from the introduction of a barrage. in this work is being sought. Subsequent experiments carried out with several different types of barrage all tended to show that no major effects detrimental to Cable Restrictions Relaxed shipping, drainage and flood controi need be feared. The lecture was illustrated by «P'bia- Use of Steel and Lead scope projection of a number of valuable LECTRICITY supply authorities have been diagrams and photographs from the Cardiff E notified by the Electricity Commissioners Library. that the Cable Planning Officer of the Ministry of Supply has informed them that certain restrictions on the use of lead and steel in the Professional Appointments production and jointing of cables can be Ministry of Labour’s Resettlement Plans removed forthwith. In consequence the restrictions on the use AST week we reported the intention of of armoured cable set out in previous circular L the three leading engineering institutions letters of the Commissioners may now be to encourage the formation of a Professionalregarded as having been withdrawn, and under­ Engineers’ Appointments Bureau which, it was takers may purchase armoured paper-insulated stated, would co-operate with the Ministry of lead-covered cable which complies with B.S. Labour in the machinery which was being set 480/1942 or any later Specification without up for guiding and planning the redistribution ot submitting the orders to the Commissioners technical man-power in the years immediately for endorsement. It will still be necessary after the war. Particulars of the macliine y for the undertakers to submit the usual “ M referred to were announced by the Minister ot application form for an authorisation to purchase Labour last week. j the steel. The plan, which aims at resettling men_and It has been decided for the present to retain women in “ higher appointments ie’’ Regulation 12 of the Electricity Supply Regula­ above that of foreman, is based on recom tions, 1937, as amended by the Commissioners mendations by the committee appointed, under circular letter of July 9th, 1940. Accordingly, the chairmanship of Lord Hankey, to r p undertakers who desire to purchase paper- on the reorganisation of the existing Appoi insulated lead-covered cable to a Specification ments Department of the Ministry To meet a other than B.S. 480/1942 or any later Specifica­ proposal that larger areas were des rable or tion, will still require the Commissioners’ the purpose, the Ministry is reducing the approval. number of its appointments offices from thi y The restrictions imposed in previous letters on one to thirteen. The filling of post‘ requiring the use of lead sleevesjfor cable jointing are also engineers with full professional qualifications now withdrawn. will continue to be dealt with centrally. January 12, 1945 E l e c t r ic a l R e v ie w 61 Drying1 Grain Electrically Successful Installation at Spalding

XPERIMENTS that are being under- Jefferies “ B.C.D.8 ” unit of the continuous, E taken in various parts of the country open type, with the standard coke-heating in connection with the drying of grain by component removed and replaced by electric electricity are being followed with con- heating elements inserted in an especially siderable interest both by the electrical industry and by farmers. The first all-electric plant installed in this country, at Bedford, was described in our issue of November 5th last year. Now we have had an opportunity of inspecting an installation of quite a different type which the Spalding U.D.C. Electricity Department (Mr. F. R. C. Roberts, engineer and manager) has designed for Elsom's (Spalding), Ltd. Though hitherto used mainly for drying sugar beet seed, the plant has also proved eminently satisfactory for peas, wheat, barley, etc. Before drying, the seed or grain is given a preliminary cleaning. From a hopper holding 30 cwt. it is

Above : Contactors and switchgear con­ trolling the banks of heating elements Left : Hot-air intake of the grain dryer in which the elements and thermostats are A W fitte d I designed hot - air * '■ intake ducting. In this type of ~ dryer the grain is slowly carried along :/ f 'i a perforated plate conveyor, first over a current of hot air and then over one of cold, the air being blown from beneath. Separate fans, each giving an blown by a fan, driven by a 7^-HP Brook air flow of 12,000 cu. ft. a minute are used for motor, to an “ Invincible ” cleaner, from the hot and cold sections of the plant, but which it is discharged via a chute to the both of them, as well as the conveyor, are dryer. The latter is a Ransomes, Sims and driven by the same 15-HP, 1,500-RPM Brook 6 2 E l e c t r i c a l R e v ie w January 12, 1945 motor through V-belts, reducing the shaft employed for controlling the temperatures speed to 650 RPM. are fitted in the hot-air trunking an(^ <-,overFa To suit the moisture content of the grain range of temperatures from 65 to 180 deg. r. being dried the speed of the conveyor can With this arrangement the temperature is be varied mechanically from 2-2 in. to 30-8 maintained constant to within 2 deg. r. _ in. a minute, the time taken for the grain A safety thermostat in the hot-air trunking to travel the whole length of the conveyor cuts off the heaters should the temperature being from 164 to 10 minutes as desired. exceed 175 deg. F., due, for instance, to the The average speed of drying the grain is a ton breaking of a V-belt drive, while should the an hour. motor stop through some mechanical or After leaving the conveyor the grain is again electrical failure the automatic opening ot blown up to a hopper with a capacity of the starter switch (Allen West) simultaneously five tons which feeds three further cleaning opens the contactor coils for the heaters. machines driven from one shafting by a 5-HP In addition to a Cambridge temperature Brook motor. The large holding capacity recorder, Rototherm thermometers are fitted of the above hopper has been arranged to both in the hot-air inlet and at the point enable the cleaning machines to continue in the dryer where the hot and cold air during peak hours when the drying plant is currents meet, the latter instrument pro­ idle. viding a fairly accurate indication of the The heating elements, which have been moisture content. made by the Cressall Manufacturing Co., Apart from the constant temperature Ltd., have a total loading of 225 kW arranged obtainable the plant scores heavily over a in three banks, two of 81 kW and one of coke-operated unit in the time taken to heat 63 kW. Each bank is itself split up into three up, about four minutes being all that is units of equal loading (27 kW in the case of required to achieve a 65 deg. F., rise in the former two banks and 21 kW for the temperature. Mr. Roberts tells us that so other). The three 21-kW elements are far nothing like the full load has been required, thermostatically controlled, the remainder 145 kW o f heating being the m axim um being hand operated. Three triple-pole recorded after the initial heating up. A Igranic contactors are provided for each further reduction in consumption would bank of elements, indicator lamps shunted undoubtedly be secured if a re-circulation across the contactor coils showing whether system were to be incorporated. As it is, the temperature control mechanism is with a special off-peak tariff for heating operating properly. (employing a time switch) and the flat rate Normally the drying temperature employed for power, it is considered an economical is about 110 deg. F., but the plant is designed proposition, in view of the very high quality to give temperatures of up to 155 deg. F. and constancy of the grain treated, to employ (with an ambient temperature of 50 deg. F.) electricity for heating even if the cost is if required. The three Satchwell thermostats twice that of coke.

Electricity in the Textile Industry Raising Productive Capacity rBiHAT the modernisation of the textile industry conclusion regardless of inefficiency. Mechan­ M was almost impossible without electrification ical transmission losses were high and not was the comment of Mr. R. H. Harral, Black­ enough attention was paid to textile engineer­ burn Corporation electrical engineer and ing. Group driving of looms and individual manager, in a paper read by his deputy, Mr. E. motors for new looms would eliminate shafting Barrell, to the local Chamber of Commerce on and permit more natural light in mills. Power December 20th. costs were often not more than 5 per cent, of He said that increased trade (especially exports) the total production cost compared with labour had been secured by engineers who had adopted at 60 per cent. Labour-saving equipment and electrification, and the application of electricity well planned lighting, with the addition of to cotton would raise the productive capacity canteen and welfare facilities, would do much of worker and machine to an extent larger than to improve the status of the industry. was realised by cotton manufacturers. The Blackburn electricity undertaking, he The cotton industry was alarmingly full of said, had played its part in co-operating with inefficient plant, which should be replaced by manufacturers in the past and it was encouraging electric drives. There was also a considerable to state that fourteen mills had installed elec­ amount of bad lighting in factories. Generating tricity for lighting on approved systems. As plant in a municipal power station was operated production had been improved by 20 per cent, on a twenty years’ financial life basts. But with improved lighting, it was difficult to experience had shown that it was more econom­ understand why Government Committees’ ical to replace the plant after seventeen or recommendations had not been universally eighteen years. accepted. He had had many local examples of steam Mr. Harral suggested a British Industries Fair engines being run because they were paid ott, for Blackburn which the Chamber of Commerce and operating costs were accepted as a foregone might sponsor. January 12, 1945 E l e c t r i c a l R e v ie w 63 ELECTRICITY SUPPLY Birmingham Extensions. Cooling Methods at Lincoln and York.

Belfast.—-Increased O utput. —The output o f the undertaking had now “ turned the corner.” the Belfast Corporation’s electricity undertaking He said that the Committee had been faced with in the year ending March 31st last was 358-5 two alternatives, a drastic increase in charges or million kWh, an increase of 70-8 million kWh the claiming of Government assistance. Assist­ (24-6 per cent.). The maximum demand upon ance from the Government would have been at the system was 114-1 MW against 90-6 MW in the price of restrictions, with a certain number the previous year. Many new industries were of onerous conditions on the expenditure of the supplied and the number of consumers increased few reserves the undertaking still had left. by 1,264 to 87,155. Fortunately the Committee took the courageous Undertaking’s Jubilee. — Application is course and decided to stand on its own feet, and being made for sanction to an expenditure not the charges, already raised by 20 per cent., were exceeding £100 in connection with the jubilee increased to 33^- per cent. He emphasised that celebrations of the electricity undertaking. in spite of the increase the tariff still compared Birmingham.—Power Station Extensions. — favourably with all the undertakings in the area. Proposals for power station extensions estimated All the losses haa been written off from the to cost £3,333,154 are made in a report of the reserves. They had continued to pay off their Electric Supply Committee presented to the loans and the net loan debt in March last was City Council this week. The Committee states £431,000, which represented a reduction in the that it has received a direction from the Central five years of £192,000, a considerable achieve­ Electricity Board to make arrangements im­ ment under the conditions in which the under­ mediately for the extensions, and that fulfilment taking had been operated. Sales were now of the programme necessitates immediate getting back to normal, and he prophesied that steps to put the w’ork in hand. The ultimate the next alteration in charges would be down­ maximum capacity, the report adds, will meet ward. estimated requirements for four or five years Hull.—L o a n s .—The Corporation Electricity ahead. The plans provide for two turbines each Committee has obtained sanction to borrow driving a 50,000 kW main alternator and a £1,312 for electricity supply to the Hessle Road 3,500 kW auxiliary alternator, four boiler units trolley-bus system and is seeking sanction to each having a maximum continuous evaporative borrow £2,403 for overhead line and substation capacity of 320,000 lb. of steam per hour and a equipment. cooling tower to deal with 5,000,000 gallons of water per hour. One turbo-alternator, two Lincoln.—Possible A lternative to Cooling boilers and the cooling tower are to be ready by T o w e r s .—Prospects that Lincoln may be able September, 1947, and the rest by September, to extend its generating station without cooling 1948. The cost of extension of the main towers, the subject of the recent inquiry, were transmission system is estimated at £611,527. raised at a recent meeting of the City Council. The town clerk stated that the Witham and Darlington.—Supply to W orks.—The Cor­ Steeping Catchment Board had now approved poration is to supply electricity to the works of in principle a scheme for pumping water from T. Ness, Ltd. the Trent to Fossdyke and the River Witham Easington.—Lower Charges Urged. —The for cooling purposes, and had appointed its Rural District Council is seeking a “ considerable chairman (Alderman Sir Robert Pattinson) reduction ” in electricity charges for the district, and the engineer of the Board to attend a and also an improved supply. It is intended to conference to be held at Lincoln. meet representatives of the electricity under­ London.— Purchase of K ettles. —The South­ takings to discuss the matter. The Easington wark Electricity Committee reports that it is area has several electrical suppliers inctuding necessary to provide all possible facilities for local colliery concerns. It is considered that cooking and heating under rehabilitation electricity charges by these firms are too high, schemes. Unfortunately, while the undertaking and the Council is seeking to have them brought is in a position to provide most of the require­ to the level of the North-Eastern Electric Supply ments, there are no kettles in stock, many having Co., Ltd. been lost through war damage. There is now a Edinburgh.—Post-W ar Scheme.—A report possibility of being able to purchase 500 kettles on the extension of electricity supply in con­ at 36s. each and the borough electrical engineer nection with post-war reconstruction was is to make every effort to acquire them. Appli­ considered at a meeting of the Public Utilities cation is to be made for sanction to borrow Committee recently. It was shown that the £1,000 for kettles for hire and £3,000 for the cost, exclusive of the erection and equipment purchase of meters. of a proposed switch-house, amounted to Meriden.—Street Lighting. —The Rural Dis­ £365,130. This sum included £127,393 for trict Council is negotiating with the Birmingham 33,000-V and pilot cables. Corporation Electric Supply Department in Great Yarmouth.—“ Corner Turned.” —D ur­ connection with a supply of electricity to ing the war the accounts of the Electricity Hampton-in-Arden for street lighting. Department have shown losses aggregating Morley.— Reason for Gas Choice.— The £90,000, which has been met out of reserves. Council’s post-war houses at East and West Councillor H. S. Matthes, vice-chairman of the Ardsley, Gildersome and Drighlington, in the Electricity Committee, reporting to the Council area of the Yorkshire Electric Power Co., are ast week, expressed the view that, financially, to be provided with gas services. Councillor 64 E l e c t r ic a l R ev iew January 12. l'W-

H. A. Bradley, chairman of the Housing Com­ also supported electricity on h e a lth mittee, informed the Town Council at its last Councillor J. W. S. Wilkinson statec - ln meeting that the sole idea of this move was to Committee gas had beaten e le c tn c ir - r.- e show- the Yorkshire Electric Power Co. that its votes to four, adding that all hoasey _ ■ e> were rates were excessive. not in favour of electricity as Counct^o' Baroer North Scotland.— Inquiry Concluded. — had led the Council to believe. Coan._icr Mrs. When the public inquiry into the objections to Haieh expressed the view th a t in large re eras gas the first constructional scheme of the North of was'" quite the best." b u t w h e r e aocom_rdanon Scotland Hydro-Electric Board was resumed on w as limited a trial of the all-electric w ould January 3rd before Mr. John Cameron, D.S.C^ be a good thing. Electricity, she thought, K.C_ counsel for Perth and Kinross Joint cooked just as well as gas. County Council and Inverness County Council York.—W ater for Cooling.— Tbefear has withdrew from the inquiry. This left the Dum­ been expressed th a t fu r th e r cooling towers will be barton Counts* Council, the Clyde Valley built at Y'ork electricity station as part of the Regional Planning Advisory Committee and proposed extensions. A t a meeting of the City Mr. E. Lowes, of GlenfaDoch, as the only CotmcSL however. A ld e r m a n C. T. Hutchinson objectors. Mr. H. O. Hill, chartered chi said it was probable that the water for cooling engineer, and Mr. Malcolm Ross, county purposes would be obtained by means of a pipe engineer. Dumbartonshire, gave evidence regard­ Une from the Ouse to the Foss near the generat­ ing sources of public water supply ana contended ing station and that there w o u ld be no need for that Loch Sloy was the most suitable: it was a tow er. nearly 300 ft. higher than Luss Water and had a greater rainfall. The hearing of evidence was TRANSP0 RT concluded and on the following day the Com­ Liverpool.— Post-W ar Policy".—In a report missioner heard submissions by counsel. on the post-war reconstruction and development Norwich.— Loan Paid Off. —Presenting the of the Liverpool Corporation passenger trans­ accounts of the Electricity Department for port undertaking. Mr. W. G. Marks, the g en er a l 1943-44 at last week's meeting of the City manager, deals separately with the a d v a n ta g e s Council. Councillor S. A. Bailey, chairman of and disadvantages of electric tramways, m o to r the Electricity Committee, said that £73,954 had buses, trolley-buses and underground e le c tr ic been written off on capital account for the railw ays- The C o m m itte e has now asked h im to amount paid for the goodwill of the former report on the relative capital and maintenance company, the loan for which had now been costs of each form of transport. Although no paid off. decisions have been reached, the Committee Salford.— Rates “ Gift " to Swinton. — is disposed to the view that, as a long-term Last week the City Council approved the policy, it should aim at abolishing tr a m s and proposed extensions at the Agecroft power replacing them with a dual system of b u s e s and station directed by the Central Electricity fast electric coaches running on light railw ays Board. One effect of the scheme which was comprising reserved tracks only. not to the liking of the Finance Committee New Zealand.— M o r e T r a m P a s se n g e r s.— was that the Corporation would thus be After reaching a peak of 167 ” million in 1925-26. guaranteeing a £3.500.000 loan to create the number of tram passengers decreased to property which would present the Swinton and 119-8 million in 1933-34. Since then there has Pendlebury Council with £61,500 of new rateable" been a steady growth of traffic and in 1943-44 a value, equal to 3s. in the £. Alderman J. Park, new record of 220-2 million passengers was chairman of the Committee, said mat he took established. the strongest possible objection to this, and his Committee had put forward certain suggestions Insulating Varnishes to secure some of the benefit for Salford. PAPER prepared by Mr W. P. W alters South Shields.—Conversion of Lighting A for the London Students' Section of the S y s te m .—The Corporation has considered a report from the borough electrical engineer Institution of Electrical Engineers deals with which states that the estimated cost to the insulating varnishes. Manufacture, properties and uses are dealt with, the author explaining Electrical Department of converting the present gas street lighulng to electric lighting is that the commoner impregnating varieties £25.000. which includes the automatic control are made of resin or bitumen bases dissolved of 500 hand-switched electric lamps and 1,426 in either o r b o th linseed o r china w ood oOs. gas lamps to be converted. The estimated Belore the resins are graded they have to be revenue is £11.”26 and the expenditure including rendered soluble by hearing, the melting of interest and sinking fund £10.889. The Conned the lumps being accompanied by frothing and has adopted the plan in principle, the conv ersion a considerable change in volume. During ihis to be carried out over a period of five years. gum-running process, which needs to be carried out with the accuracy of skilled experience, Southport.—Gas Chosen by One Vote.— evaporation causes a loss of about 30 per cent, Bv 21 votes to 20 the Town Council last week in weight. The cooked resin is next cleaned in a decided in favour of the installation of gas sodium-carbonate solution and then rinsed in cookers, boilers and refrigerators in temporary water to remove any alkali- It is stirred into houses. Councillor H. W. Barber pressed for preboiled oil at about 250 deg. C. with the addi­ all-electric houses, saving that since plugs had tion w-hen cooling of such thinners as petroleum to be installed in the electrical circuits he did not or white spirit to adjust the viscosity, as well as see why electricity should not be used for all metallic driers to promote oxidisation. After the domestic services. Councillor J. J. Irvin straining and filtering the solution is allowed considered that in such small houses vitiation to mature for some months in settling tanks, so of the air would reach serious proportions if that solid particles in suspension can gravitate oa. were used, and Councillor F. S p e a k m an to the bottom. January 1 2 , 194 5 E l e c t r ic a l R e v ie w U.S. Army Hospital Electrical Aids to Diagnosis and Treatment

T was recently announced that an Allied by the use of a stereoscopic cassette changer. I soldier wounded in France had ninety- Among the mobile X-ray equipment prob­ seven chances ouf °f a hundred of living, and ably the most interesting is the field unit that it he reached a hospital in Great Britain (manufactured by the Picker-Waite Co.) his chances of survival improved to 269 to 1. specially designed for the American army for After a visit to one of the United States Army’s general radiography and fluoroscopy under large general hospitals in this country it is not field conditions. At this hospital two of these equipments are used, one fixed per­ manently in the radio­ logical department and the other fitted on a mobile stand in the operating theatre of wards wherever it is required. The X-ray tube can be rotated and carried underneath the table, and there is a tray carriage for ex­ amining from above, together with a foreign body locator. Safety devices are incorpor­ ated to prevent opera­ tion if the circulator and blower motors are

Westinghouse heavy-duty X-ray equipment for general use and, right, portable Packer X-ray unit specially designed for the U.S. Arm y difficult to understand why this is the case, and it is noteworthy to what an extent electrical appara­ tus is now employed both for diag­ nosis and for actual treatment. The hospital in quest'on has beds for about 1,200 accommo­ dated in Nissen huts arranged roughly in the form of a large “ V.” Both for surgical and medical cases X-rays are of course employed very largely ; every month 1,600-1,800 patients visit the radiological department. To meet all possible requirements several different types of equip­ ment have been provided, both fixed and portable. F o r general w ork a not energised, and there is also a thermal safety Westinghouse heavy-duty machine is normally switch which operates if a predetermined used. It has two tubes, one above and one temperature is exceeded. Shockproof cables below the fluoroscopic-rontgenographic tilt have been arranged so as to be interchange­ table. In chest radiography a great deal of able and great care has been taken to protect time is saved and better results are achieved all cable fittings during transportation. To January 12, 19 4 5 E l e c t r ic a l R e v ie w

For the treatment of n e r v e s and muscl S . reduce strain on the cable it is free to rotate results are achieved with galvanic both at the transformer end and at the tube end. Besides being fitted with plastic windows current stimulators, while a ge under- to prevent breakage, the instrument panels massage is provided by means o f a ^ ^ a whirlpool bath, the w ater o f w hich is agitated by means of a i-HP motor ; for safety this is fitted with a thermal over­ load protector. Stiff joints, arthritis, etc., are relieved by Ingleby paraffin wax baths, which are heated to a temperature of 130- 140 deg. F., by means of small immersion elements. In the operating theatres special lamps are arranged for use from 230 or 115-V main supplies, storage batteries o r dry cells. Other electrical equip­ ment in use in the operating theatres in­ Petrol-driven generator for operating X-ray and other electrical equipment cludes a coagulator when no main supply is available (for bloodless surgery) and suction apparatus for removing blood are mounted on “ Airform ” rubber to absorb from incisions. vibration. , The chassis of the equipment is mobile, in fact the whole apparatus can be stowed away in three medium sized chests. Such care has I.E.E. London Students in fact been taken with the packing arrange­ ri^HE second half of the present session of ments that it is possible to drop the apparatus i the I.E.E. London Students’ SectionSectio by parachute without risk or damage. Though opens on January 15th with a paper by W. P. here run on standard 230-V, three-phase, 50- Walters, B.Sc., on “ Insulating Varnishes. cycle supply, the apparatus is designed tor This will be followed on February 13th by the use on 120 V as well, and where no main Students’ Lecture on “ The Cathode Ray electricity supply is available, it may be Tube and its Applications ” by Dr. W. Wilson. operated by means of a specially designed On March 5th T. M. Ellison will present a paper portable, petrol-driven generator supplying on “ Mercury Arc and Mercury Vapour Rectifiers in Transmitters,” and on March 28th single-phase 60-cycle AC at 120 V and having the President of the Institution, Sir Harry a capacity of 2,500 W at unity power factor Railing, D.Eng., will give an address. A paper Generators of this type can also be employed on “ The Lumen Method of Illumination for use with other electro-medical apparatus Calculation” will be presented by G. S. H. under emergency conditions. Mogford, on April 16th and the meeting on Another type of mobile X-ray plant, May 1st will be devoted to discussion of the “ Solus,” is utilised not only for general work reports on “ Education and Training for Engineers ” and “ Part-time Further Education.” but in the field as well : two units of this type On May 14th a paper on “ AC Generator are available. A portable apparatus, the Protection,” by D. S. Daoud, is to be read by Watson “ MX 2,” is adaptable for 70, 110 P. W. Castle and G. Lyon, B.Sc.(Eng.), and and 230 V and its compact control panel has the session will close with the annual meeting the transformer built in. It can be taken on May 28th. apart quickly and carried to the bedside. A full programme of visits—numbering In the physiotherapy department, where fourteen in all—has been arranged, including Battersea power station (February 10th), about 2,000 electrical treatments of all kinds Furzehill Laboratories (February 17th), St. are given each month, the comprehensive Bartholomew’s Hospital (April 7th) and the collection of electrical apparatus includes Brimsdown power station (May 5th). The Hanovia ultra-violet ray equipments, SoUux first informal evening dance of the session was Burdick, Hanovia and Walter S. Edwards a most enjoyable event and those who took infra-red ray apparatus; a"d a g|lva^ ’ part will look forward to the next, which has sinusoidal, faradic unit (J. Beebe & Co.). been fixed for March 10th. January 12, 1945 E l e c t r ic a l R e v ie w 6 7

V i : « 1 E O O K & How Steel is Made. Demonstrating the Properties of Metals.

Steel Manufacture Simply Explained. By E usually content to accept the metals and alloys Gregory Ph.D., M.Sc., and E. N. Simons,' which they use without endeavouring to find Third edition. Pp. 205 ; figs. 53. Sir out anything about their physical properties. Isaac Pitman & Sons, Ltd., 39, Parker This is undoubtedly a considerable handicap Street, London, W.C.2. Price 12s. 6d. particularly in engineering design, in view of the This book was first published in 1940, a large number of metals and alloys which have second edition appearing in 1942, and now the been developed in recent years. third is available. In a foreword to the book on This little book has been written in order to publication, the chairman of Edgar Allen & remedy this state of affairs by describing briefly Sons. Ltd.. Mr. C. K. Everitt, made the following s°me G4 different experiments demonstrating observations : “ I have been employed in the the chemical reactions, physical changes and manufacture of steel for the last fifty-eight years, physical properties upon which the applications and still am. During these many years I have of metals and alloys to their diverse uses in frequently come across situations in steel manu­ engineering practice depend. No attempt is facture of which I should have welcomed a made to deal with the production of metals from simple explanation. Dr. Edwin Gregory and their ores and all the experiments both quantita­ Eric N. Simons are explaining in a simple tive and qualitative can be carried out with the manner the whole manufacture of steel. I hope more or less simple apparatus usually found readers will have their appetites whetted by this in the normal chemical and physical laboratory. book, and that they will delve deeper still into The experiments cover the ferrous and non- the study of steel manufacture and seek the ferrous metals together with their alloys and in explanations of many matters still puzzling steel addition to dealing with the investigation of manufacturers to-day.” It would appear that chemical and physical properties include Mr. Everitt’s hope has been well-founded and simple tests for the determination of strength, that many engaged in this industry have been hardness and so on. A feature of some of helped by this book. these tests is that they are carried out on wires The authors have taken advantage of the call the drawing of which is the object of a previous for a new edition to direct attention to the ever- set of experiments. The making of anti­ increasing use of the high-frequency electric friction alloys is dealt with as also is the pro- crucible process and have considerably extended duction of the different fluxes used by the the chapter on this subject, much help having metallurgist. Useful tables of physical con­ been given in this respect by Mr. L. F. Keeley. stants, heat colours, etc., are also included. The introduction of a method for accurately We would have liked to have seen a few measuring the temperature of molten steel at experiments covering the investigation of the various stages of the melting process is bound electrical properties of metals and their alloys to influence the technique of steel manufacture but with this reservation we have nothing but in the near future and in view of this, a chapter praise for this valuable little book. The has been added on “ The Quick Immersion engineer or designer who has worked Thermo-Couple ” with the assistance of Mr. T. systematically through the experiments which Land, M.A. This thermo-couple was designed it describes should be very well equipped to by Dr. Schofield and Mr. A. Grace, the essential deal with the correct choice of the most suitable feature being a 13 per cent, rhodium-platinum : metals or alloys for his purposes.—A.R. platinum couple of wire 0-5 mm. in diameter, lightly sheathed in vitreous (glassy) silica. Electrical Installation Rules and Tables, By Unlike normal pyrometers, it is not in constant W. S. Ibbetson, B.Sc. Third edition. Pp contact with the furnace atmosphere but is 164; illus. E. & F. N. Spon, Ltd., 57 designed to be plunged into liquid steel and Haymarket, London, S.W.l. Price 6s. quickly withdrawn, the temperature being read This useful little book, measuring only 3 in. by just before withdrawal, and it is claimed that the 5 in., can easily be carried in the pocket to afford instrument will give accurate readings in from ready reference to the tables and regulations 10 to 20 seconds. which wiremen, contractors, engineers, archi­ Additions have also been made to the chapter tects, etc., require on the job. In addition to the on “ From Ingot to Finished Steel ” and other essential parts of the eleventh edition (1939) of improvements are the addition of a glossary of the I.E.E. Regulations, it includes extracts from the principal technical terms used in steel-making. the recommended war relaxations of the Last, but not least, the English has been still Regulations, together with other recent altera­ further deflated and improved.—T.F.W. tions and additions. Electrical Perils and Safeguards. By F G W Metallurgical Experiments. By F. Johnson. Tree, A.M .I.E.E. Pp. 48 ; figs. 5. Sir Isaac D.Sc. Pp. 78. Paul Elek (Publishers), Pitman & Sons, Ltd. Price Is. 6d. Ltd., Africa House, London, W.C.2. Price 5s, The war, on account of the increased use of Metallurgy might not incorrectly be called electricity in industry and of the disturbances the father of engineering because were it not caused to electricity supply systems by bombing for the various metals and alloys produced by has_ increased the risk of shock to some extent the metallurgist, the creations of the engineer This little book describes in simple language thé would of necessity be vastly different from what causes of electrical hazards, how to avoid them they actually are. And yet, most engineers and methods of dealing with persons suffering know very little of the science of metallurgy, and from electric shock and with fires caused bv gxcept for the routine strength tests they are electrical faults.—W.R.C, January 12, 1945 E l e c t r i c a l R e v ie w 6 8 Monday, January 22ni.-London^lnstitntion Forthcoming Events of Electrical Engineers, 5.30 p.m. , f meeting. Discussion on Apph'»«ons, , Friday, January 12th.— Newcastle-on-Tyne.— Electricity to Water Supply, to be p Mining Institute, 6 p.m. Noi'thsS^Sun:9(?erc Institution of Engineers and Shipbuilders. “ Measuring Instruments for Use in Engineering and Shipbuilding,” by B. A. Robinson. Technical Society. “ Chromate P^stvauon oi Zinc,” by Dr. S. G. Clarke and J. F Andrews. Saturday, January Manchester.— Engineers Club, 6.30 „p.m. Service Bureau, 2, Savoy Hill, W.C.2, 2. ip p.m. I.E.E. North-Western Students Section, Association of Supervising Electrical Engineers. velopment of the Stroboscope, y “ Theatre Lighting,” by L. G. APPleP®?- F London.—Institution of Mechanical Eng BY°Neâwca^le-on-Tyne.— Neville HalhôdSp.rn. ineers Storey’s Gate, St. James s Park, S.W.l, I E.E. North-Eastern Centre. The Electrical 3.30p’.m. Graduates’ Section. Display of films Aspect' of Farm Mechanisation, by C. A. Cameron Brown, B.Sc. Electricity Department Offices,White- Bradford.—Technical Cçllege, 6.45 p.m. hall Road 2 30 p.m. I.E.E. North Midland Bradford Engineering Society. The High- Students Section. “ Early Power Station rupturing-capacity Fuse „and Equipment Equipment,” by E. Lunn. The address will be Medium-voltage Systems, by J. Collins. illustrated by lantern slides. Crumlin.—Monmouthshire Mining and Tech­ Tuesday, January 23rd.— Luton.Town Hall, nical College, 5 p.m. Association of Mining 7.30 p.m. Luton Electrical Society. Fluores­ Electrical and Mechanical Engineers (South cent Lighting,” by C. R. Bicknell, B.Sc. Wales Branch). “ Flameproof Electrical Appar­ atus,” by H. Rainford. Monday, January 15th.—London. Institution Additional I.E.E. Meetings of Electrical Engineers, 7 p.m. London Stu­ N additional ordinary meeting of the dents’ Section. “ Insulating Varnishes, by A Institution of Electrical Engineers is to be W. P. Walters, B.Sc. held on Thursday, January 18th to discuss a second report on education and training tor Tuesday, January 16th.— London.—^Institution engineers. This will deal with part-time further of Electrical Engineers, 5.30 p.m. Rad‘o Sec­ education at technical colleges (including tion. Discussion on Frequency Allocation for courses for those returning from the Services). Long-distance Communication Channels (Over The report will be presented by Dr. A. P. M. 1,000 Miles),” to be opened by Dr. R. L. Smith- Fleming, C.B.E., M.Sc., on behalf of the Education and Training and Personnel Sub­ R°Manchester.— Engineers’ Club, 6 P-m- I-E.E- committee of the Institution, by whom it was North-Western Centre. Influence of Resist­ ance Switching on the Design of High-voltage An extra meeting of the Radio Section will be Air-blast Circuit-breakers, by H. E. Cox and held on Wednesday, January 24th, when T. W. Wilcox. a paper on “ Television Broadcasting Practice Wednesday, January 17th.— Manchester.— in America—1927-1944 ” will be presented. The Engineers’ Club, 6.30 p.m. Women s Engin­ author is Mr. Donald G. Fink who is at present eering Society (Manchester Branch). Mechan­ abroad, and the paper will therefore be read ical Mishaps and Industrial Accidents, by by Dr. David B. Langmuir. G. E. Windeler. Friday, January 19th.—London.--Institution of Electrical Engineers, 5.30 p.m. Measurements Television Society Section. “ Fixing of Confidence Limits HE 1945 session of the Television Society Measurements,” by H. J. Josephs. opened last week with a paper on London.—Institution of Mechanical „ En­ T “ Separating Sound from Vision,” by Dr. K.. R. gineers 5.30 p.m. Informal meeting. The Sturley. Forthcoming meetings, all at the Engineer and the Nation’s Money,” to be intro­ Institution of Electrical Engineers in London, duced bv A. R. Vickers, B.Sc. (Eng.). are as follows:—January 24th, 5.30 p.m.: Newcastle-on-Tyne.—-Neville Hall, 6.30 p.m. “ American Television Broadcasting Practice, I.E.E. North-Eastern Students Section. Elec 1927-1944,” by D. G. Fink. February 27th, trical Properties of the Human Body, by J. M. 6 p.m.: Annual general meeting and dis­ cussion on “ The Social Aspects of Television, A 'Sheffield — Metallurgical Club, West Street, to be opened by Capt. C. H. Cazaly. April 30 Dm Junior Institution of Engineers 4th, 5.30 p.m. (joint meeting with I.E.E. Radio (Sheffield Section) Presidential address: Steel Section): “ Studio Technique in Television, and the Engineer,” by A. Roebuck. by D. C. Birkenshaw and D. R. Campbell. Saturday January , 20th.— Manchester.— En- April 27th, 6 p.m.: “ Beam Electrodes,” by Pineers’ Qilb 3 p.m.‘ Association of Supervising S. Rodda, B.Sc. May 29th, 6 p .m .: “ The Electrical Engineers (Manchester „Branch). Human Eye and the Photo-cell,” by Dr. W. Sommer. . “ Electrical Rules and Regulations, by T. Visitors are welcomed at all the Society s meetings. Tickets of admission for non­ members can be obtained from the general secretary, O. S. Puckle, 8, Mill Ridge, Edgware, H ? n T FP'ff,B1e S l"°» ,sSE„Ai,.N.S or the lecture secretary, G. Parr, 68, Compton Road, Winchmore Hill, N.21, F. A. Geary. 12, 1945 January E l e c t r ic a l R e v ie w 4 7

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m o b W.CH « MANCHESTER • LON DON AND BRANCHES January 12, 1945 E l e c t r i c a l R e v ie w 69 FINANCIAL SECTION Company News. Stock Exchange Activities.

and contractor carried on by Ernest A. Harvey, Reports and Dividends at Burton Street, Nottingham, and to carry on Turner & Newall, Ltd.—In a statement the business of electrical, motor, mechanical accompanying the accounts, Mr. W. W. F. and general engineers, wireless service agents, Shepherd, the chairman, says that the company etc. D irectors: E. A. Harvey, 64, Cromwell already has under detailed consideration Street, and H. Haw, 7, Forest Grove, Colville expansion schemes entailing expenditure of Street, both of Nottingham. Registered office: over £1,500,000 on capital account within two 26, Burton Street, Nottingham. years. These are expected to be covered comfortably from existing resources and no Companies Struck Off the Register new issue of capital is contemplated. The The following companies have been struck consolidated balance sheet shows net current off the Register and are thereby dissolved:— assets amounting to £6,594,000. Gainsborough Radio, Ltd., and the Pluperfect Thos. Bolton & Sons, Ltd., are maintaining Refrigeration Co., Ltd. their interim dividend at 2J per cent. Companies’ Returns New Companies Statements of Capital Radio & Television College, Ltd.—Private London Electric Wire Co. & Smiths, Ltd.— company. Registered in Edinburgh, December Capital, £1,250,000 in £1 shares (750,000 29th. Capital, £500. Objects: To carry on ordinary and 500,000 preference). Return the business of a college or school for the dated July 6th, 1944. 684,070 ordinary and teaching of the principles and practice of 400.000 preferred shares taken up. £350,035 radio and telecommunication and carry on paid. £734,035 considered as paid. Mortgages the business of buyers and sellers of radio and charges: Nil. apparatus, etc. Directors: A. M. Cowie, 25, Heathwood Drive, Orchard Park, Thornlie- Frinton-on-Sea & District Electric Light & bank, Renfrewshire; W. Nightingale, 15, Power Co., Ltd.—Capital, £100,000 in £1 shares. Woodside Terrace, Glasgow, and S. Barclay, Return dated July 19th, 1944. 80,000 shares Boden Street, Glasgow. Registered office: taken up. £80,000 paid. Mortgages and 45, Renfrew Street, Glasgow. charges: Nil. Monmouth Electricity Co., Ltd.—Capital, Eddy’s (Nottingham), Ltd.—Private company. £50,000 in £1 shares (all ordinary). Return Registered December 28th. Capital, £100. dated July 19th, 1944 (filed August 14th, 1944). Objects: To acquire the business of retail 35.000 shares taken up. £35,000 paid. Mort­ dealers in wireless and electrical goods, etc. carried on by Edward Abrams, as Eunice gages and charges: Nil. Radio, at 135, Alfreton Road, Nottingham. Mortgages and Charges Directors: E. Abrams and Eunice Abrams, both of 32, Pattendale Road, Woodthorpe, Electrical Utilities, Ltd.—Satisfaction in full Notts. Registered office: 135, Alfreton Road, on December 1st, of mortgage dated November Nottingham. 2nd, 1942, and registered November 6th, 1942. Imp Radio, Ltd.—Private company. Regis­ tered December 28th. Ca'pital, £1,000. Objects: Liquidations To carry on the business of manufacturers of, I.C.I. (Plastics), Ltd. and I.C.I. (Alkali), and dealers in, radio and television sets, electrical Ltd.—With a view to the transfer of the whole apparatus, batteries, etc. Subscribers: D. L. of their undertakings, assets and liabilities to Hickson and D. Sutherland, 76, New Cavendish Imperial Chemical Industries, Ltd., these two Street, W.l. companies are being wound up voluntarily. D. Bradman, Ltd.—Private company. Regis­ Mr. C. S. Guthrie, of I.C.I. (Plastics), Ltd., tered January 3rd. Capital, £2,000. Objects: Ltd., Black Fan Road, Welwyn Garden City, To carry on the business of manufacturers of, has been appointed liquidator of the former and dealers in, electrical fittings, shades, lamps, company, and Mr. J. K. Batty and Mr. D. accumulators, batteries, wireless sets, etc. Drummond, both of I.C.I. (Alkali), Ltd., Directors: Annie Bradman, D. Bradman and H. Winnington, Northwich, liquidators of the Bradman, all of 61, High Road, N.15. Regis­ other company. tered office: 61, High Road, Tottenham, N.15. Wipac Development, Ltd.—Private company. Bankruptcies Registered December 30th. Capital, £100. D. F. Wilkinson, electrical engineer, lately Objects: To carry on the business of electrical carrying on business at 238, Stockingstone and mechanical engineers, electricians, etc. Road, Luton.—Order made November 30th Subscribers: C. B. Jarman, The Retreat, suspending discharge for twelve months. Castlethorpe, Bucks and C. Akers, C.A., 1, P. W. Penty, electrical contractor, trading as Queen Victoria Street, E.C.4. Solicitors: Sackville Electrical Co., 38, Mannville Terrace, .Hyman Isaacs & Co., Audrey House, E.C.l. Morley Street, Bradford.—Proofs for dividend E. A. Harvey, Ltd.—Private company. Regis­ by January 20th to the trustee, Mr. E. T. tered December 28th. Capital, £1,500. Objects: Sanders, Hallfield Chambers, 71, Manningham To acquire the business of an electrical engineer Lane, Bradford, Official Receiver. January 12, 1945 70 E l e c t r i c a l R e v ie w dividends. The yield on the first T?® *s STOCKS AND SHARES £3 8s. 9d. per cent.; Henley s return £3 12s T u e s d a y E v e n in g . per cent. Ericsson Telephones 5s. sha RICES of Stock Exchange securities have receive 20 per cent, tax free. The | ha^ s -¡V higher at 55s., and at the latter figure gi e P started 1945 in good form. The gilt- £1 16s. 6d. per cent, net, equivalent, of course, edged group is noticeably firm, and this to £3 13s. per cent, gross, with tax at tus. exercises a favourable influence over all the Murex is another company paying 20 per investment markets. Home Railway stocks cent., the £1 shares at 5 ^ yielding £3 19s., are held steady by the near approach of while Ransome & Maries at 87s. 6d. give dividend announcements. In the accompany-, £4 11s. 4d. on the present paid 20 per cent, ing list of prices in the manufacturing and dividend. Newman Industries, Switchgear equipment section, a number of fresh & Cowans, Thom Electric and Ward & advances have occurred this year. The Goldstone are amongst those that are now satisfactory advance in the Cossor dividend, paying 20 per cent, dividends on their noted last week, has been a hardening factor ordinary shares. in the radio section. Electricity Supply General Electric For several weeks past there have been no The Stock Exchange Committee, appealed price movements worth mentioning in the to, upheld the refusal of its Sub-Com­ group of Home electricity supply companies. mittee to the application for permission to Fluctuations have not exceeded more than deal in 2,000,000 new 4* per cent. “ C ” 6d. a share where they have occurred amongst preference shares issued by the General the ordinary shares, although in the preference Electric Company to pay off a loan contracted list a few prices have moved up during the in the early days of the war. The 2,000,000 past month or so. The stolid front presented shares were taken by Morgan Grenfell, the by the ordinary shares calls for attention as bankers, at 20s. The firm was paid a com­ being noteworthy in view of the various mission of £30,000 for its services m the factors, some favourable, others the reverse, matter and it distributed a large proportion that concern the industry as a whole. In of the shares to various financial interests. pre-war days, rises in the price of coal and The Stock Exchange Committee was asked other costs would have been followed in­ to grant permission to deal in these 2,000,000 evitably by dullness in the share prices. new shares, the price of which would have Added to these rising costs there has been, opened in the market on the basis of 21s., and still is, the risk of damage by enemy thereby offering the original purchasers a action. Yet none of these things exerts any good profit on the deal. influence over the stability of prices. Different Angles The Rises The General Electric Company has 27,000 International Combustion have risen 5s. to shareholders and apparently the Treasury 6 i a little demand finding no adequate took the view that to offer 2,000,000 shares supply available to meet it. Ever Ready amongst 27,000 shareholders would not only shares are * higher at 43s. 9d. Tube Invest­ involve a great deal of work, but might divert ments at 55s. 8d. are 3s. 9d. better. Mather money which otherwise would go towards the & Platt have improved to 56s. 3d., General national war effort. The Stock Exchange Electrics to 98s. 6d. Revo 10s. shares at Committee regarded the affair from a 44s. 6d. gained the pence. S. Smith (England) different angle, and, as already mentioned, rose to 86s. 6d. . . . , declined to give the necessary leave to deal Cable & Wireless stocks retain their last in the shares. There the matter rests at the week’s improvements and Globe Telegraph present time. Out of the 2,000,000 shares ordinary are Is. 6d. higher at 42s. 6d. 150,000 had been reserved as a kind of con­ International “ Tel. and Tel.” continue to cession for assisting to make a market. progress : at 24 the price shows a point rise. These have been sold back at 20s. 6d. to the Brazilian Tractions, also a dollar stock, put banking house. on *, and are 26*. The Calcutta Tramways excitement subsided. Of last week s 7s. fall, Radio Group Is. has been recovered, the price rallying The increase in the dividend on E. K. Cole to 62s. 6d. shares to 20 per cent., following upon 15 per cent, in 1943 and 10 per cent, for 1942, was Twenty Per Cent. Dividends not unexpected, but the figures shown in the British Insulated and Callender s Cable accounts were considered remarkably good. keep together, neck and neck, rises of * As a consequence, the price rose from 37s. 6d. taking the prices of both shares to 116s.3d to 40s., easing off a little from the best on a Henlev’s which are 5s. shares, have hardened certain amount of selling that met the buying S 27s 9d! equivalent to Ills, for £1 shares. All three companies are paying 20 per cent. (Continued on page 72) ;o i January 12, 1945 Electrical Review 71 SIL äS®5 %£* ELECTRICAL IVVISTIIHVIS RSS coses Prices, Dividends and Yields a » Dividend Middle Dividend H Middle Price Rise Yield Price Rise Yield ÖISl - Company Pre- Ja n . or p.c. Company Pre­ Jan . or p.c. W. ¡5! vious L ast 9 Fall vious Last 9 Fall pce Home Electricity Ordinary Equipment and Manufacturing «iäg Bournemouth and £ s. d. £ s. d. ïjrj'l Poole . . 121 121 62/6 4 0 0 Aron Elec. Ord. 15 15 61/- 4 18 4 'S !» British Power and Assoc. Brit. Eng. 6 7 57/6 2 8 9 Light 7 7 4 B iS 33/— 4 10 Assoc. Elec.: City of London .. 7 H 30/- 3 13 4 O rd...... 10 10 58/- 3 9 0 Clyde Valley 8 8 42 /- 3 16 0 Pref...... 8 8 40 /- 4 0 0 County of London 8 8 43 /- 3 14 5 AutomaticTęL&El. 12* 121 67/6 3 14 0 Edm undsons 6 6 32/- + i / - 3 15 0 Babcock & Wücox 11 11 54/- + i/- 4 1 6 -¡S a Elec.Dis. Y orkshire 9 9 45/6 3 19 6 British Aluminium 10 10 46/- 4 7 0 SnK» Elec. Fin. and Se­ British Insul. Ord. 20 20 - 5 $ + ił 3 8 9 M l | curities 121 131 60/6 4 9 0 British Thermostat Elec. Supply Cor­ ( o f - ) . . ..181 181 21/3 4 7 0 a * r poration 10 10 50/6 3 18 6 British Vac. Cleaner s (¿1 Lancs. Light and (5/-) .. ..30 30 32/6 4 12 3 ims& Power 71 7 ł 37/— 4 1 1 Brush Ord. (5/-) 8 9 11/- 4 1 9 t 'J U Llanelly Elec. .. 6 6 26/6 4 10 7 Burco (5/-) .. 15 15 15/9 — 9d. 4 15 3 iiaüi Lond.Assoc. Electric 3 4 26/- 3 1 6 Callender’s . . 15 20 5 # + ¿r 3 8 9 6 ChlorideElec.Storage 15 15 X i® London Electric 6 30/6 3 18 8 85/- 3 10 7 Metropolitan E.S. 8 8 4 3 /- 3 14 5 Christy Bros. .. 121 171 80/- 4 7 6 *sifc Midland Counties 8 8 41/6 3 17 0 Cole, E. K. (5/-) 15" 20 38/9 2 11 6 CPKZ Mid. Elec. Power 9 9 44/- 4 1 10 Consolidated Signal 24 27* 6f 4 1 6 £ ES Newcastle Elec. 7 7 32/- 4 7 6 Cossor, A. C. (5/-) 7** 10* 33/- -f 6d. 1 10 4 : i s s N orth Eastern Elec 7 7 34/6 4 1 2 Crabtree (10/-) .. 171 171 44 /- 3 19 7 s l t t i N ortham pton .. 10 10 5 0 /- 4 0 0 Crompton Parkinson WÈ.B Northmet Power 7 7 41/- 3 8 4 Ord. (5/-) . . 20 22k 33/6 3 7 3 Richmond. Elec. 6 6 2 6 /- 4 12 4 De La R ue . . 35 40 9* 4 2 0 SSBlfl Scottish Power .. 8 8 40/6 3 19 0 E.M.I. (10/-) .. 6 8 37/- 4-1/6 2 3 3 IEĆ2E Southern Areas 5 5 23/- 4 7 0 Elec. Construction 10 12ł 61/3 4 1 8 South London .. 7 7 30/- 4 13 4 Enfield Cable Ord. 121 121 64/- 3 18 2 W est Devon 5 5 24 /- 4 3 4 English Electric 10 10 56/6 3 10 6 W est Glos. 41 3 ł 25/— 2 16 0 Ensign Lam ps (5/-) 25 15 21/3 3 10 8 (ta îlj Y orkshire Elec... 8 8 4 3 /- 3 14 5 Ericsson TeL (5/-) 22* 20* 55/— -f tV 1 16 6 Dnhlir Rnarric Ever Ready (5/-) 40 40 43/9 “T Ä 4 11 4 ie Lar Falk Stadelm ann 71 71 34/6 4 7 0 Central Electricity m i t Ferranti Pref. .. 7 31/9 4 8 2 1955-75 5 5 115 4 7 0 G.E.C.: 1951-73 41 41 106 4 5 0 Pref. . . . . 61 61 34/- 3 16 4 m àk 1963-93 . . 31 31 104 3 7 4 Ord. .. .. 171 171 98/6 4-6d. 3 11 0 li«E5ï 1974-94 .. 3Ï 100* 3 4 8 H G eneral Cable (5/-) 15 15 17/- 4 8 3 i Erik London Elec.Trans. 21 21 98xd 2 11 0 Greenwood&Batley 15 15 48/9x1 4-6d. 6 3 0 London & Home i nsr • HallTelephone(10/-)121 121 31/6 3 19 4 Counties 1955-75 41 41 112 4 0 4 -Ejffi Henley’s (5/-) .. 20 20 27/9 4-3d. 3 12 0 Lond.Pass.Trans.Bd. 2KB fi 4*% Pref. .. 41 41 24/- 3 15 0 A . . . . 41 41 1211 3 14 1 Hopkinsons .. 15 171 73 9 4 12 9 iSSi1 T» 5 1221 4 1 g India Rubber Pref. 51 51 23/- 4 14 9 1000 & 3 69" 4 14 2 c H In tl. Combustion 30 30~ 4 8 9 o a i o i f i West Midlands - f ł Johnson & Phillips 15 15 79/- 3 15 9 J.E.A. 1948-68 5 5 10*ii 4 14 0 a beC LancashireDynamo 221 221 1 0 0 - 4 10 0 ¡.Ü.B* Overseas Electricity Companies Laurence, Scottio -)121 121 14/- 4 9 3 Atlas Elec. Nil N ü 7/— — London Elec. W ire 71 71 38/- 3 19 0 Calcutta Elec. .. 6* 6* 46/6 2 11 9 M ather & P l a t t .. 10 10 56/3 4 -Ar 3 11 2 Cawnpore Elec... 19 7 41/3 3 7 9 Metal Industries (B) 8 81 4 9 /- 3 9 6 Met.Elee.CablePref. 51 5Î 21/3 5 3 6 ELÛ» East African Power 7 7 35/- 4 0 0 Jerusalem Elec... 7 5 29/- 3 9 0 Mid. Elec. Mfg. . . 25~ 25 • f ł 3 9 10 ip o a 1- ? Kalgoorlie (10/-) 5 5 10/6 4 15 3 M urex . . . . 20 20 •5 -fe 3 19 0 rl94ie Madras Elec. N ü 4 30/6 2 12 4 Newman Ind. (2/-) 20 20 7/3 5 10 0 owns3 Montreal Power I ł I ł 251 + ł — Philco (2/-) .. — — 15/- —x ibl* & Nigerian Elec. .. 8 10 37/- 5 8 1 Power Securities 6 6 29/6 4 1 4 5* 38/6 2 12 0 Pye Deferred (5,-) 25 25 33/9 3 14 0 m ’y ^ PalestineElec.“A’ ’ 5* Ransome & Maries 20 bests- Perak Hydro-elec. 6 7 12/6 — 20 87/6 4 11 4 Tokyo Elec. 6% 6 6 24 — R evo (10/-) . . 171 171 44/6 4-6d. 3 18 7 K b 0 VictoriaFallsPower 15 15 90/-x d 3 7 7 Reyrolle .. .. 121 121 72/6 3 9 0 WhitehallInv.Pref. — 6 26/- *• 4 12 4 ( Continued on next page) * Dividends are paid free of Income Tax. January 12, 1945 7 2 E l e c t r i c a l R e v ie w

Dividend Middle Dividend Middle Price Rise Yield Price Rise Yield Jan . or p.c.. Jan. or p.c. Company Pre­ FaU Company Pre­ vious L ast______9 vious Last 9 Fal £ s. d ’ Equipment and Manufacturing (Continued) £ s. 4 12 4 Cape Elec. Trams 5 6 26/— Siemens Ord. .. 71 n 36/- 4 3 4 4 3 Lancs. Transport 10 10 47/6 S trand Elec. (5/-) 10 121 11/0 5 8 Southern Rly. : Switchgear & Cow­ 78 20 20/9 4 16 5% Prefd. 5 5 ans (5/-) . • 20 5 119 25/- 3 0 5% Pref. 5 T.C.C. (10/-) .. 5 7£ 62/— 10 86/- 3 11 T. Tilling 10 10 T.C. & M. .. 10 West Riding 10 10 47/6 TelephoneMfg.(5/-) 9 9 12/- 3 15 Thorn Elec. (5/-) 20 20 28/9 3 9 Telegraph and Telephone Tube Investm ents 20 22£ 5* 4 0 Anglo-Am. Tel. : Vactric (5/—) .. Nil 221 17/6 6 8 4 16 5 Pref. .. . • 6 6 1241 -H Veritys (5/-) .. 7£ 7* 9 /- 4 3 5 0 0 D ef...... H H 30 W alsallConduits(4 /—)55 55 52/6 4 3 Anglo-Portuguese 8 8 29/6 5 8 6 W ard & Goldstone 3 6 Cable & Wireless : (5/-) .. ..20 20 30/- 4 13 3 14 h \ % Pref. .. 5£ 5£ 118 WestinghouseBrake 121 14 75/- 4 85 4 14 7* 8/9 4 5 Ord. .. . • 4 W est, Allen (5/-) 7£ CanadianMarconiSl Nil 4cts. 9/6 Traction and Transport Globe Tel. & Tel. : O rd...... B P 5* 42/6 + 1 /6 2 7 Anglo-Arg. Trans. : 6 31/- .. 3 17 N il 2/6 Pref. .. . • 6 First Pref. (£5) Nil G reat N orthern Tel. 4% Inc. .. Nil N il (£10) . . ..N il N il 28 Brit. Elec. Traction: 3 15 In te r. Tel. & Tel. Nil Nil 24 + 1 — Def. Ord. 45 45 1200 4 4 Marconi-Marine.. 7£ n 35/6 Pref. Ord. 8 8 190 3 10 O riental Tel. Ord. 16 10 4 8 /- .. Bristol Trams . 10 10 57 /- 6 20/— 6 0 0 2 26£ + & 7 9 Telephone Props. Nil B razil T raction . If Tele. Rentals (5/-) 10 10 12/3xd .. 4 1 8 Calcutta Trams 6* n 62/6 +1/- 2 7 * Dividends are paid free of Income Tax. made, a good deal of business has materialised Stocks and Shares {Continued from page 70) in the shares. Both the ordinary and the movement. At 38s. 9d. the 20 per cent, preference have achieved a fair amount of dividend gives a return of £2 1 Is. 6d. per cent, popularity. The 6 per cent, preference shares on the money, clear evidence of the hopetui of 10s. each, offered at 10s. 6d. to the share- post-war prospects. sholders in the proportion of one new E M.I. shares came into fresh demand and preference for five old preference held, now at 37s. are Is. 6d. higher on the week. stand at 12s. middle, giving at that price a Broadcast Relay at 21s. 9d. and Ultra yield of 5 per cent, on the money. Shares Electrics at 9s. 9d. have hardened J. & t . can be obtained in the market at 12s. 3d., Stone keep steady at 8s. 6d., and Scophony affording £4 18s. per cent, and at the moment a t 4s. 6d. they can be bought free of stamp and fee. The ordinary shares, also offered in the E . K . Cole proportion of one in five, at 4s. Hd., are E.K. Cole was registered as a private quoted at 2s. premium. These are, naturally company in 1926 and was made public tour the more speculative of the tvyo. years later. It manufactures all classes of Line upon Line radio receivers and radiograms, also bakelite mouldings and test gear. It had a ,substantial There are 4,000 Mid-Cheshire Electric interest in Scophony but disposed of this in ordinary on offer at 39s. 9d., yielding a few 1943 It will be remembered that in the same pence over 4 per cent, on the money. In the vear E. K. Cole acquired Ensign Lamps, London group, Metropolitans at 43s. 6d. ltd The E K. Cole dividend record has return £3 13s. 6d. and London Electric te n chequered. In 1939 and 1940. the Supply at 31s. 3d. give £3 16s. 9d. Lines of ordinary shareholders went without a 3,000 London Associated Electric at 26s., dividend, but in 1936 the company paid and ten thousand Scottish Power at 40s. 7id., 30 per cent, out of earmngs of 79 per cent. afford £3 Is. 6d. per cent, and £3 18s. 6d. The price of the shares in the black days of per cent, respectively. All these yields are 1940 fell to 2s. 6d.; the c u r r e n t quotation is based, of course, upon the dividends last practically the highest reached since paid by the respective companies, and the return per cent, will be regarded as being company was made public. modest enough. Nevertheless, investment Watford Electric continues to absorb them and probability Since the delayed issue of W atford Electric points to the likelihood of there being still & Manufacturing Company’s shares was scope for expansion in the quotations. « January 12, 1945 E l e c t r ic a l R e v ie w 73 ■

tJ ul NEW PATENTS Electrical Specifications Recently Published tu t in The numbers under which the specifications Will be January 8th, 1943. (Divided out of 15071/41.) 11 printed and abridged are given in parentheses. (566218.) Copies of any specification (Is. each) may be K. Manheimer.—“ Electric lighting fittings.” obtained from the Patent Office, 25, Southampton 8398. May 26th, 1943. (566207.) Buildings, London, W .C.2. Marconi’s Wireless Telegraph Co., Ltd.— A RROW Electric Switches, Ltd.—“ Slow- “ Radio transmission systems.” 10310/43. break electric switches.” . 10414/43. July June 26th, 1942. (566259.) 25th, 1942. (566217.) Nalder Bros. & Thompson, Ltd., and J. C. British Thermostat Co., Ltd., and W. F. F. Redman.—“ Electrical measuring instruments.” Martin-Hurst.—“ Valves for controlling the 11706. July 19th, 1943. (566230.) flow of fluids.” 9289. June 9th, 1943. N. Pensabene. — “ Dynamo - electric (566211.) machines.” 8910. June 3rd, 1943. (566210.) British Thomson-Houston Co., Ltd. — Philco Radio & Television Corporation.— “ Electric discharge devices.” 6140/43. April “ Apparatus for receiving frequency-modulated 21st, 1942. (566300.) “ Electric circuit- waves.” 9543/43. June 13th, 1942. (566255.) interrupting devices.” 9407/43. June 16th, A. Phillips, Ltd., and C. E. M. Shakeshaft.— 1942. (566310.) “ Prepayment meter mechanism.” 1355. British Thomson-Houston Co., Ltd., and January 27th, 1943. (566196.) L. C. Ludbrook.—“ Electro-magnetic gauges.” Pyrotenax, Ltd., and F. W. Tomlinson.— 11340. July 13th, 1943. (566227.) “ Insulated electric conductors.” 9752. June British Thomson-Houston Co., Ltd., W. E. 17th, 1943. (566316.) Gough, J. H. Pollard, S. A. Couling and R. H. Reavell & Co., Ltd., and T. T. Mayers.— Collingham.—“ Electrical ignition apparatus for “ Pneumatically operated switches more use on aircraft.” 381. January 9th, 1942. particularly switches for stopping and starting (Addition to 545540.) (566283.) electric motors driving air compressors.” R. Calvert, G. G. Gouriet and E. Davies.— 10873. July 5th, 1943. (566261.) “ Electrical frequency-dividing, counting and Revo Electric Co., Ltd., and F. H. Reeves.— time-base circuits.” 10160. June 23rd, 1943. “ Electric-lamp fittings.” 8546. May 28th, (566215.) 1943. (566208.) J. Davis & Son (Derby), Ltd., and C. Dawson. P. F. Roberts.—“ Inductances and trans­ ismaKffik —“ Electric switch mechanisms more especially formers containing laminated cores by the use inaiy 2Bds for use in controlling shot-firing in mines.” of which efficiency is increased.” 10756. iii ami' 11649. July 17th, 1943. (566229.) July 2nd, 1943. (566221.) fereattfc Dorman & Smith, Ltd., and T. Atherton.— S. Rothschild and Cathodeon, Ltd.—“ Means . lo tk s fc “ High-rupturing capacity electric fuses.” Cog­ for the indication of infra-red radiation.” 13505. June 31st, 1943. (566278.) Of OK i nate applications 6911/43 and 7682/43. May 1st, 1943. (566303.) K. F. Rushton.—“ Holders for electric light ace belt i bulbs.” 7624. May 13th, 1943. (566244.) t that pm Ferranti, Ltd., M. K. Taylor and I. N. Vaughan - Jones. — “ Super - regenerative rec­ Santon, Ltd., and R. J. Trevelyan.—“ Method oney. & eivers.” 8740. June 1st, 1943. (566209.) for making soldered joints.” 12104. July it ai 12s. i A. S. Green, T. Astley and R. Birchenough.— 26th, 1943. (566265.) at t i e ® « “ Coupling and static electrical earth bonding Standard Telephones & Cables, Ltd.—- am p a i i - device for pipes.” 16843. October 14th, 1943. “ Telephone cord connector.” 7262/43. July (566279.) 7th, 1942. (566205.) “ Method of and means ffered i : for attaching a lead-out conductor to an 4s. 1 Ü -' Igranic Electric Co., Ltd.—“ Drives for valves and the like.” 10518/43. June 29th, electrode of an electric vacuum tube.” 11163/43. ait, naW 1942. (566260.) August 27th, 1942. (566225.) J. E. Rhys-Jones and Plessey Co., Ltd.— J. W arneand F. Garside.—“ Primary electrical “ Radio aerial systems particularly of the batteries.” 5455. April 6th, 1943. (566241.) direction-finding type.” 14372. October 14th, “ Electric torches, flash-lamps and the like.” slire Efc 1942. (566286.) 5456. April 6th, 1943. (566242.) Kirkstall Forge, Ltd., and F. R. Cowell.— Westinghouse Electric International Co.—- ioney. I*> “ Transmission gearing for trolley-buses.” 5547. “ Electric circuit interrupters.” 13612/42. Sep­ tember 26th, 1941. (566191.) a t f t s April 7th, 1943. (566331.) idon E t Kodak, Ltd. — “ Electric lamp sockets.” 8549/43. June 22nd, 1942. (566250.) 9d. Lte, Landis & Gyr Soc. Anon.—“ Alternating Radio on Railways ctric a l * current power switches.” 15054/42. November r a t 40s-' T ESTS of a two-way radio system have 13th, 1941. (566192.) “ Coin-inlet mechanism been carried out on the Canadian National f f il* for use on prepayment apparatus operating Railways by the Canadian Marconi Co. A ;e yields ^ with coins of different values.” 17808/42. 50-W transmitter of the frequency modulated tided i December 16th, 1941. (Addition to 480552.) type is used, operating on 36-6 Mc/s. Two ;S, W ' (566194.) steam locomotives, a Diesel and an electric d a s i e Linde Air Products Co.—“ Electric welding have been equipped with the necessary apparatus inves0 systems using fusible electrodes.” 6748/43. for communication with the chief train con­ May 14th, 1942. (566204.) troller in the signal control tower at Montreal. jrobaO® J. L. P. MacNair and G. E. Gardam.— A range of 20 miles is possible, but for the pur­ being i “ Electrodeposition of chromium.” 10564. pose of the tests only about half this is required. ms.

I January 12. 1945 7 4 E l e c t r ic a l R e v ie w COYIHACT IM ’OltMATlOA Accepted Tenders and Prospective Electrical \\ ork

Cheltenham.—Works additions, Portland Contracts Open Street: M. E. Stace & Co., Ltd. Where “ Contracts Open ” are advertised in our Dumfries.—Extensions at Dumfries and Gallo­ " Official Sotices " section the date o f the issue way Joint Sanatorium (£4,150); medical superrn- is given in parentheses. tendent- Australia.—March 1st. Western Australian Essex.—Canteen additions, technical college, Government Tender Board. Two 25,000-kW Chelmsford (£3,221); county architect. turbo-alternators and condensing plant: boiler- Heaton Chapel.—Offices and stores; Welling­ house equipment (Boilers, pulverised coal equip­ ton Tyre Co., Warwick House, Warwick Rdad. ment, economisers, feed pumps, air heaters, Hull.—Housing development, Sutton; Fisher mechanical draught plant, pipework, buildings, Sc Hollingsworth, architects. etc.); and 25.000-kW frequency changer. Hnlme.—Factory. Melbourne Street and April 26th. Melbourne City Council. Elec­ B r a d s h a w Street; D. Howick, 1, Brazennose trostatic flue a as dust collecting equipment Spec 419. City Electrical Engineers’ Office Street, Manchester, 2. Keighlev.—Civic Centre at College Street and (£1 Is.) Hanover Street; R. C. Gibson, borough engineer. Geflygaer.—February 3rd. Electricity Depart­ ment. " Indoor and outdoor transformers, kiosk Langlev Moor (Co. Durham >.—Factory for complete with switcheear and accessories, e.h-v. W oodhouse Sc Smith, hosiers, Nottingham. and Lv. cable, overhead line equipment, wood Maidstone.—Workshops, College Avenue for poles. (See this issue..» Catchment Board (£2,608); E. W. Trier & Co, L td. Orders Placed Mansfield.—Substation, Rock Valley; Barrin­ ger, Wallis & Manners, Ltd. Glasgow.—Electricity Committee. Accepted. Miles Platting.—Rebuilding workshop. New Meters.—Aron Electricity Meter; Metropolitan- Street, after fixe; E. L. Doyle, architect, 26, Vickers Electrical Co.; Measurement: and Hollins Lane, Marple Bridge, Marple. Sangamo Weston. Oldham,—Works additions, Daniel Street; Hull.—Electricity Committee. Accepted. 30 000-kW turbine (£162,853».—General Elec­ Meredith & Drew, Ltd, biscuit manufacturers. tric Co. Stacks and ducts (£287,204. revised».— Potato Crisp Dept. Clarke, Chapman & Co. Piping 1136,45:».— Preston.—SchooL Ribbleton estate; J. E. Aiton & Co. Foster, borough surveyor. Manchester.—Electricity Committee. Accept­ Rochdale.—Additions to Lark Mills; John ed! Supervisory control equipment-—Standard B riaht Sc Bro, L td, cotton spinners, Fieldhouse Telephones Sc Cables. Battery and charging Mifls. equipment.—Britannia Batteries. W eldless steel Sheffield.—Office, showrooms and warehouse, lamp columns and fittings (annual contract ». Leppings Lane; J. C. & M. Wortley. Bromford Tube Co. ; ~ Stew arts & Lloyds. Sooth Shields.—Schemes for building new Auxiliary steam pipes.—Babcock Sc W iicox. fever hospitaL extension of maternity hospital Warrington.—Electricity Committee. ' Accept­ and provision of an out-patients’ department ed. Reinforced concrete chimney (£11.235).— and reconstruction of kitchen at the general Simon Carves. Interconnector cabling ( Ll,9s8), hospital; N. G. Richardson, borough engineer. plus lavina at time rates.—British Insulated Town Hall, South Shields. Cables.' 50-ton electric crane (£4,425).—Whar- Stockton-on-Tees.—Additions to malleable to n C rane & Hoist Co. Cables tor twelve steel works; South Durham Steel & Iron Co. months.—British Insulated Cables. Stretford.—Works additions, Ayres Road; Switchgear Sc Cowans. Ltd. Contracts in Prospect Works additions, Frazer Road; Wood Straw Particulars o f new works and building schemes for C o , Ltd. the use of electrical installation contractors and Works additions, Ashburton Road; Massey traders. Publication in this section is tw guarantee Harris. Ltd. that electrical work is definitely included Alleged Laboratorv. Frazer Road; Steriine Varnish inaccuracies should be reported to the Editors. C o , Ltd. Ancoats.—Workshop. Sandford Street: Jones Swansea.—Factory additions, Landore: Welsh & Dalrymple, architects, 178. Oxford Road, Boxes, Ltd. Chorlton-upon-Medlock. Mancbester W arrington.—Extensions to Town HalL Bank Reinstatement of works after fire. W oodward Park; J. Y. Hughes, borough surveyor. Place; Hallidav Sc Agate, 14, John Dalton West HartlepooL—Two additional central Street, Manchester, 2. kitchens; borough engineer. Bolton.—Works additions, Thomas Street ; York,—Training college, hostel, principal's James Lever & Sons, Ltd. house, gymnasium. Heslingion; governors of Bournemouth.—Additions, 83-5, Gladstone S l John's Training College, Lord Mayor's W alt Road : Cleveland Industries. Ltd. T- Y ork. Addhions. 36. Commercial Road: W. Timp- Works additions, Wiggington Road; Rown- tree Sc Co., L td. son, L td. January 12, 1945 El e c t r ic a l R e v ie w 4 9

'w a tt ¿ etta They say that when the swan sings it / j is about to die. Our swan (which the _ U artist has tricked up out of a Spire fixing) heralds the demise of the millions of nuts and washers that it replaces. Spire fixings take many forms. They do the job of a nut and washer, but they do it with more efficiency and less effort on the part of the operator. Many Spire fixings are integral with the component that is to be fixed so that no nut or washer at all is needed. The Spire ' idea ’ is not restricted to 'nut and b o lt’ assemblies. Whenever there is a fixing, clamping, holding job to do there is a chance that Spire could help you. So if you will tell us your immediate assembly problem — we shall gladly design yet another. It may not be as elegant as the Swan but it will do a job of work reducing your assembly time and saving material and cost for you.

That’s FIXED That! Here's a Hide chap in action. Reference No. N U 531. Its uses are legion. W h e re v e r there is blind assembly work, wherever your operatives are fumbling with nuts and washers the N U 531 will save time and cost and a lot of bad temper. Clip it into position and it stays * put * until you are ready to tighten up the screw. No washer needed of course. X A BETTER way of fixing

Simmonds Aerocessories lim ited ■ Great West Road London. A Company of the Simmonds Group January 12, 1945 E l e c t r ic a l R e v ie w 5 0 L

AVAILABLE A G A IN ST#tii>M V

HART ACCUMULATOR CO. LTD. MARSHGATE LAME. STRATFORD LONDON, E.1S Telephones: MARylend 1361/3 Branches a* Birmingham, Bistol, Cork. Dublin, Glasgow, Manchester Newcastle-on-T yne • Nottingham and Westmmster

I T¡ad S T Hnob E T H A T L O C H /

RECTIFIER UNITS TRANSFORMERS E T C . I---- f , LECC( industries) LTD. 'Ih / 'il / i a M lA O f lS 'b , WOLVERHAMPTON January 12, 1945 E l e c t r ic a l R e v ie w 51

This illustration shows a W. & G. Electric Bell, Push and Transformer, one of man/ types usually available.

A wide and com­ prehensive range of electrical accessor­ ies is available to consumers for National Service.

WARD&GOLDSTONE Ltd. Pendleton, M anchester. 6 . . ESTABLISH SO OVER HALF A CENTUBY

R O U T IN G . U se the routing machine for t u f n o L-, quantity production of j th e engineers material, non-metallic. lightweight j shaped Tufnol parts. Make jigs in Tufnol, wood or metal. Tufnol is lightest to handle. Use single fluted cutters for Tufnol parts up to thick, double fluted cutters for greater thicknesses. Rough profiling by band or fret saw reduces wear on cutters. Internal

Fuller details of speeds and routing and deep profiling should be cuts are given in our “ Manual on Machining Tufnol done in stages. TUFNOL LI2 p E R R r B a r r Birm ingham 2 2 B January 12, 1945 E l e c t r ic a l R e v ie w

These approved and cert,fled Conduits ,nd Fittings are consistently reliable i•»- ‘D irect-O -lite' ler the most arduous conditions of You c»n specify none better C.M.CIIURCIIOUSE LTD .

ClARENDON WORKS .CLARENDON CROSS.LONDON.WII.

Telephon,. PARK 8617-8 Telegrams,“LITEFITINS NOTARCH'

London Stores: 9 Howland Mews West, Howland St., W .l. Phone: Museum 6225

“DECO” Re&s“Ened MIDGET FABRICATED SPRING CONTROLLED RADIAL DRUM to reel in 50 feet diameter 4-core flexible T .R .S. cable. Manufacturers of Cable Reel­ ing Drums, spring, power driven, counterweighted, d irect coupled and hand operated, to suit all applica­ tions where loose trailing cables are employed. DALYTE ELECTRICAL CO. LTD. Rnw North Kensinaton. W.IO For Electricians— An in ­ dispensable Safety Tool N O for detecting live D A N G E R w ire s . FO R T H E Twelve supplied in O P ER A T O R fti^Cîlïsi J each display box. —even if the Indicator Lamp Safe for voltages should get broken up to 750. Deliveries T w L / , Patent applied From Stock y ę t t f o * / for. l is t PRICE W W - RESIST/RISK; e / u n i t I/ ELECTRIC TOOL

^ „ - . - w MANFRC.CO.LTD. 5T NARY STRICT kjr icxt or u in i â BUCKHUR5T Hill H Y D E ROAD, ARDW ICK. M ANCHESTER, 12. BIRMINGHAM 16 TELEPHONE - ARDWICK 4 2 8 4 Ja n uary 12, 1945 E l e c t r ic a l R ev iew 5 3

“ TANGENT ” TELEPHONES are installed

throughout the country In Government

and Corporation Departments, Hospitals,

Hotels, Cinemas, Offices, Factories, Mines,

etc. Although our war-time activities

limit their installation to priority require­

ments, we look forward to the time

when we can satisfy the demand for them.

TANGENT “ Products Indmdo

^ N D SIGNAL; LUMINOUS CALL SYSTEMS ■ STAFF LOCATORS • MINING I S IG N FIRE, BURGLAR AND BANK RAID ALARMS TFl FPHONPt I IN T E I I SSWOHRONOUS Y N C ' ELECTRIC IMPULSE CLOCKS AND % UOUI L I Q L d T e v e F CHIM,NG TOLLING MECHANISM GENTS’ Ï I d S AMn o ii-«,-rRE£ °RD,NG AND ALARM APPARATUS LE/CE5TER W m a c h i n e a n d o u t p u t r e c o r d e r s s p e c i a l a p p a r a t u s E S T A I. IB72

G E N T & C O . LT D . Faraday Works, L E IC E S T E R LONDON NIW CASTLE.ON.TYNS - GLASGOW - • E If AST • OUtLIN T c sthtnq

MOULDING TEST— Wylex mould their own mouldings and prove for themselves the strength of every one. Here is shown the Impact Test Machine, designed and made at W ylex W orks. W ylex mouldings must satisfy the exacting demands of this machine.

MJiflermuttbeywil °

GEORGE H. SCHOLES & CO. LTtX WYLEX WORKS, WYTHENSHAWE, MANCHESTER. Tel: Wythenshawe, 2251/X Grams : “ Kilowatt,” Manchester. January 12, 1945 E l e c t r ic a l R e v ie w 54

INSULATED WIRES AND STRIP

SUPPLIES AVAILABLE COVERED WITH ENAMEL COTTON for all kinds of Masking and SILK VARNISH GLASS Protection & Identification ENAMEL AND PAPER of Pipe Lines against orders supported by Gover men Samples and Prices on Application Contract Numbe.s MADE BY F. D. SIMS LTD. SAMUEL JONES Sc CO.LTD. HAZELHURST WORKS, RAMSBOTTOM, LANCS 16-17 NEW BRIDGE SI.E.C.4. PHONE: CENtrai 6500 ‘ SIM S, R A M S B O T T O M " R A M S B O T T O M 2213/4

BEFORE ENTERING INTO COMMITMENTS %HTO" hat something don’t fail to write for details

* t Jiihrtnt SANTON LTD NEWPORT 14 (Mon.)

*‘lr}!S 2 & 9 tbe*tretult* Telephone 7 12 1 I - J

DELIVERY -THREE WEEKS COIL WINDING MACHINES p r e -selectio n of w ire g a u g es

DIXON HAWKESWORTH L t d ., m iddleto n , L an cs

Phone: MID 2823 ______January 12, 1945 E l e c t r ic a l R ev ie w 5 5

1

.TD, Il III» iron a

W ITH the lifting of the black­ out ban the solving of the problem of controlled street light­ ing is an urgent necessity. The Sordoviso system provides converted to heat the answer, and can be adapted Manufacturers of quality Elec­ as a centralized remote or auto­ trically Heated Appliances use matic control for all forms of street only Nickel-Chromium Wires of lighting. the greatest durability. Our Our technical engineers are Wires are processed under the available to work out or advise most modern manufacturing on your particular problems. conditions ensuring the highest The Sordoviso system is sim­ uniform standard of quality plicity itself — once installed no throughout. attention or adjustment whatever is required.

May we send you further particulars.

SORDOVISO SWITCHGEAR LTD. _ ELECTRICAL RESISTANCE WIRES Falcon Works, Loughborough A. C. SCOTT & CO. LTD. LOUGHBOROUGH Ju l CROMALOY HOUSE, CITY RD. MANCHESTER IS

r dm I 157 January 12, 1945 5 6 E l e c t r ic a l R e v ie w McCLURE & WHITFIELD MERSEY DYNAMO WORKS, STOCKPORT

Telephone: It^croriiPO RT" STOCKPORT 365314 “ MOTORS, S T O C K P O R T D r M O T O R S .L . r, F N E R AT O R S

|| for COMPRESSORS CRANE8 HOISTS PUMP8 MACHINE TOOLS, etc.

SETS lor Ships' Auxiliaries. Anodising and Plating. Every works needs DONOVAN “ S o / i n k " M.G. Sets. Isolating Links for isolating Motors, Starters, Ring Mains, Circuit Breakers, Transformers, London Office : Etc. Sizes IS to 2,000 Amps. Fulwood House, Fulwood Place High Holborn, LON DON , W.C.I Telephone: - Telegrams: H O I B O R N ISO4 . "TR/BORD, PHONE, L O N D O N "

Gjrdco TERMINAI BLOCKS 66/68 NEWCASTLE Best quality, b l a c k bakelite,Terminal NORTHUMBERLAND STREET UPON TV N E . I Blocks or Connectors. Used extensively for telephones, telegraphs, radio, bells, signals, relays, traffic signals, etc., 2, 3, 4, 5» 6» 8, 10 and 12 way in Four Types. Fully illustrated descriptive Folder on application GRELCO Ltd., Grelco Works,Hopcott,Mlnehead,Somerset

A POWERFUL, ROBUST, SELF- SUSTAINING WINCH

Al«o Blind*. Aer*- plan« H tn p n . Elertrie Lighting Fining* In Hath, il*, et*.. D am pen. Curtain*. Steamer Li'la. Hospital*. HAND-TRUCKS Street l.ightlng. A R P . CL-tha* OF EVERY DESCRIPTION Fach*. Rail wajr Station Lighting. Ho*»*. •»*. Phone: Uplands 4871/2 “ W EASEL” LIFTING TRUCKS IonookI Elecjrio Fmn.<£5YD0»l. W ITH PLATFORMS RATCHETS. PAWLS, SPRINGS OR GEAR WHEELS ______Ja n u a ry 12, 1945 E l e c t r ic a l R e v ie w 57

W&RM light from a

The new Crompton “ Warm White ” Fluorescent Tube will be welcomed for apphcations calling for mellow and genial light. Equal in efficiency to the “ Daylight ” tube, which remains unsurpassed as a light source for industry, the friendly radiance of the “ Warm White ” Tube opens a new field for the application of fluorescent fighting. The Crompton “ Warm White ” Tube is only 24/- and the Crompton “ Daylight ” Tube has been reduced in price to the same figure.

T h e n e w [RomPTon “WARM WHITE” FLUORESCENT TUBE

CROMPTON PARKINSON LIMITED, ELECTRA HOUSE. VICTORIA EMBANKMENT, LONDON, W.C.2. Telephone: TEMple Bar 5911 Telegrams: Crompark, Estrand, London Electrical Review January 12, 1945 a P I T M A f lr e

d i c t i o n a r y o f e l e c t r i c a l t e r m s By S R Roget, M.A. (Cantab.), A.M.Inst.C.E., etc. A complete and up-to-date dictionary of electrical engineer­ ing terms in the English language. The range covered includes electric light, power and traction, etc. Fourth Edition. Iis- 6d- net

performance a n d d e s i g n o f ALTERNATING CURRENT MACHINES By M G Say, Ph.D., M.Sc., etc., and E. N. Pink, B.Sc., A M I E E Deals with the three principal categories of alternating current machines-the transformer, the three- phase induction motor, and the synchronous motor and generator. 2ls- net

ELECTRICAL TECHNOLOGY By H. Cotton, M.B.E., D.Sc., A.M.I.E.E. The fundamental principles of electrical technology, both direct and alternate working, are thoroughly and lucidly explained. Strongly recommended as a general reference book^ Fifth Edition. I5S- net

PROTECTION OF ELECTRIC PLANT (Modern Methods) By P F Stritzl, D.Sc.Tech. (Vienna). Describes the latest protective methods and apparatus u se d in connection with modern large-scale electrical distribution and power plant. IBS- net N.B. Paper rationing means a shortage of books. The ELECTRIC ELEMENTS Co. Pitman House ^_-w- ^ .n^SWw r 0 NOTTINGHAM. Parker Street— f j Q Q K S C 2

OR TRAM £ TROLLEY W ORK OR CABLE CONSTRUCTION £ REPAIR OR USE IN CHEMICAL FACTORIES

MEK-ELEK Engineering Ltd. 17 Western Road, Mitcham, Surrey

non-ferrous SAND CASTINGS P & B Insulating Tape retains its adhesiveness and offers permanent resistance to In all mechanical damage. It is proof non-ferrous against water and the fumes of acids and alkalis. Supplied in metals .... .T IK I/- rolls from i" width upwards. > ULA I IiNvj ^s our in(jUstry is controlled our _ —^ —g ability to execute orders is t r iON ite ■ n subject to the regulations im. MM Wt posed by the M inistry of Works. TRIONITE LTD.

rr.uf’ niJBEBOID CO. LTD. CLIFFE VALE, STOKE-ON-TRENT Commonwealth House, New Oxford Street, W .C.I T E L E P H O N E 2171-2 January 12, 1945 E l e c t r ic a l R e v ie w 59

0URATU8E & WIRE P * K , G S «OAD

DU RAWIRES & DURACABLES ARE NOT A WAR EMERGENCY SUBSTITUTE They are not a substitute at all in the sense in which this ¡Titating word is generally used. D U R A W IR E S S u b stitu te A N D D U R A C A BLES have their own O U T ST A N D IN G PROPERTIES and will play their part in building the New W o rld as they are helping to win the war.

The effect of temperature on workers’ temperament ‘ is noticeable in underheated buildings. Resistance is lowered, interest is lost and production is affected. A warm congenial atmosphere is essential to best effort and therefore best output. Electric Univectairs (installed without heavy equipment) constantly circulating warmed air ensure a uniform distribution of comfortable warmth where wanted, creating a healthy and happy atmosphere—a stimulant to maximum production. ELECTRIC Electric Vect airs for heating UNIVECTAIRS hospitals, schools, can­ Write for details EUI2 to teens, etc., have simi- W lar advantages and are described in Brochure BRITISH TRANE CO., LTD., EVI5.

Vectair House, 52 ClerkenweN Close, London, E.C.I. Tele. : Clerkenwell 6864 & 3826 Agencies at : Belfast, Birmingham, Cardiff, Dublin, Glasgow, Liverpool, Newcastle, Sheffield and Torquay. 60 E l e c t r ic a l R e v ie w January 12, 1945

Electrical Accessories

7 .

‘MINOR* TEST SET FOR INSULATION TESTING

You could not have a more reliable or more con­ venient test set than the “ Record Minor.” Made with the high “ Record ” precision, this compact unit gives direct and dead accurate readings inde­ pendent of voltage variation. The case Is of reinforced bakelite, size 5J* X 3 $ ' X w ith clear open scale 5,000 ohms to 20 megohms. Weight only 3 lb. Height allows full swing of handle. A free handle is fitted to prevent the generator being turned in the reverse direction. ASHLEY RECORD ELECTRICAL CO. LTD. BROADHEATH . ALTRINCHAM • CHESHIRE ACCESSORIES Tel.: Altrincham 3221/22. Grama: “ Infusion,*'Altrincham ULVERSTON LANCASHIRE London Office : 28, Victoria Street, S.W .I.

IN5ULQTED IN5TRUMENT W lR E5 n opum p PLAIN EvENRMELLED H.C. COPPER 5TRPND5

Motor - Driven SCREENING & PROTECTION Pump O F CABLES in unit construc­ tion suitable for general W ater Service Boosting low pressure supplies Pumping oils and chemicals

RHODES, BRYDON €t YOUATT LTD. S_ t o c - k p o r t. H. vicTo»i*lohooh imir. ornch i.w.i L n g ia n o ^ January 12, 1945 E l e c t r ic a l R e v ie w 61

B o a h u y ) SPEED THIS VITAL WAR WORK..

“ NON-SPILL ” PETROL

CAN PRESSINGS 12 a minute Every minute that S IC F " Bearings spend on this 150-tons press is a fighting minute. Time is too precious for bearing trouble to slow down the flow of non­ spill petrol cans to the Armed Forces. And so, on this massive press that gives twelve “ Jerricans ” a minute, S K F bearings are always on the job. Every minute gained through bearing reliability, smooth operation and maintained accuracy is a minute earned for Victory.

Built by Cowlishaw, Walker & Company. 150 tons 8-inch stroke Press, electrically driven by 15 h.p. motor through pneumatic clutch. Twelve pressings per minute. Weight of Press, 24 tons. Bearings incorporated— 5 K F Double-Row Self-Aligning Ball Bearings and Deep Groove. Single Row Ball Bearings.

BALL AND ROLLER BEARINGS

THE SKEFKO BALL BEARING CO., LTD. LUTON • BEDS. 62 E lectrical Review January 12, 1945

'S | SYNTHETIC RESIN LAMINATED PAPER

|U * Y TEXOLEX Perl inish

m COPPER I INSTRUMENT f T JUBES. I \ DRAWN AND METER f STRIP. J I SECTIONS BRASSES ** 0 S'Â £T. < '7 5 ^ 0 FOR TO PRECISION LIMITS

TUBES. S H E E T S . INSULATORS. EARLE BOURNE &C9 LI? THE BUSHING CO. LTD. London BIRMINGHAM 18 „«chested HEBBURN-ON-TYNE

SPECIALISTS IN RUBBER RESEARCH

% Universal Switches Design Engineers looking for a small compact Switch for test and experimental work in Engineering Departments, Research Laboratories and Production Lines should enquire from Pye Ltd., for full details and samples of their Universal Switches. Tens of thousands of these fine-limit switches are on active service on British Aircraft all over the world. MOULDED RUBBER PARTS For the present w e can deal only SPECIFICATION —Snap Action. Balanced with enquiries for permitted movement. Weight—2 02s. approximately. essential Moulded Rubbers and Overall size—2" x|*x 1." Contact rating—5 look ahead and prepare for amps, at 250 v. A.C. High Contact pressures. the future restoration of the Proof against ordinary vibration. Internal complete “ DAINITE ” Service Override Spring incorporated. Sealed against petrol, oil, dirt, moisture, etc. Robust case. Short plunger requires depression of .020" to operate. Long plunger requires depression of .060" to operate. Numerous switching combinations available. Silver contacts. PYE L T D * RADIO WORKS CAMBRIDGE THE HARBORO' RUBBER CO. Ltd., MARKET HARBOROUGH J Oi"'(Q, r* lj E l e c t r ic a l R e v ie w Ab eVarnish y°u throwingtroubled frommotors high speed? then consult- _ _ _ _ _ GRIFFITHS BRQS.& CO.LONDON LTD 0* \ PAINT. ENAMEL & INSULATING VARNISH SoW ' SPECIALISTS MACKS ROAD, BERMONDSEY, S.E.I6

first in the fie ld o f B ritish In su la tin g

I n rn is ft M an u factu rers - a n d stifC forem ost

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

THE METAFILTRATION COMPANY LTD. BELGRAVE ROAD • HOUNSLOW • MIDDLESEX Telephone : Hounslow 1121/2/3 Telegrams: - - Metafilter, Hounslow 64 E l e c t r ic a l R e v ie w January 12, 1945

DensoPERM ANENTLY p l a s t i c PROTECTION

They shall not pass! .... that is the motto of Denso, where damp and all types of AN APOLOGY & A PROMISE! chemical action are active. W e offer all ou r friends in the Trade an apology for any shortcomings irv service and contact which has occurred these past five years. For it has been due to circumstances beyond our control. And in thanking them fortheir indulgence and tolerant understanding we make this promise. Victory achieved, we shall show our gratitude tangibly in a service that we hope will surpass that upon which our pre-war reputation was built. Already in W ar we are planning for Peace.

Write for Specification and Price List. 5jloaiyHectricaiG:li£

WINN & COALES LIMITED, 41, K IN G S W A Y , L O N D O N , W .C .2 Terminal House, Grosvenor Gardens, 8 London and Provincial Branches LONDON, S.W.I. Telephone: TEMple Bar 9611 T elep h o n e & Telegrams : SLOANE 6264.

ELECTRIC SOLDERING MACHINE (NEW IMPROVED MODEL)

FOR ELECTRICAL RA D IO AND INSTRUMENT WORK

COMPACT, PRACTICAL AND GUARANTEED for the Complete with three differ­ Repetition Soldering and ent shaped Carbons, Contact Brazing of small parts. Cord and Clip, hand portable Specially suitable for mass Soldering attachment. Foot production work. Switch and Triple Cored Main Cable for Power Plug a b s o l u t e l y shock National Soldering Fluid. PROOF, performs all kinds o f HARD and SOFT FOR A.C. CURRENT ONLY SOLDERING cleanly, simply 200-250 V o lts. 50-60 Cycles and efficiently. Send for descriptive leaflet

Available for essential requirements only January 12, 1945 E l e c t r ic a l R ev iew 65

PERMANENT MAGNETS °''e! t4° S ” have, b?.en making permanent magnet alloys. To-day we are equipped to handle competently any problem of magnet design, manufacture and 3 P k at th^rrvlrpns'fetiesearc^ and advisory department exists at our works, is at the service of those with specific magnet application problems. Write for Permanent Magnet Booklet, naming firm and position, to — ED G A R A L L E I «& CO. L TD IMPERIAL STEEL WORKS SH EFFIELD • 9 Rigidity At last the poor fellow has found the rigidity he has been looking for. If only he had known that MYCALEX is the insulator which is rigid under all conditions up to 400° C. and yet is still readily machined.

Power Factor Tensile Strength (I m eg & o v er) .002 (Ibs./sq. in.) 5,800 P e r m it tiv it y ... 6.7 W a te r Electric Strength Absorption ... NIL (volts/mil) 550 Plastic Yield 450° C.

Send for Illustrated Brochure

MYCALEX COMPANY LIMITED . CIRENCESTER . GLOS.

M Y 7 6 6 E l e c t r ic a l R e v ie w January 12, 1945

S U D S P U M P S Used on British and American Machine Tools, either submersible or flanged design. Types:—EE.l, 2, and 4. Capacity-.—From 7 to 38 galls, per min.at 6-ft. head.

Sttbtnersible F la n g ed

AUTOMATIC ! SUMP PUMP

T o deal with M o to r is in accord­ flooding in base- ance with B.S.S.' INTERVAL TIMERS ments, boiler 170/1939 and rated to ensure continu­ Types I.T.S. & I.T.S.P. Fully Tropical, houses,cable Silent operation, High switching capacity trenches, etc. ous and reliable on multiple contact assembly, silver con­ service. tacts. Range 0-5, 0-20,0-60, 0-360 minutes. Clearly graduated dial, large setting knob. Ideal for automatically controlling periods Installation : Is extremely simple. Only necessary of heating, cooling, plastic moulding, to connect pump to delivery pipe, plug motor chemical processes and the like. Send for illustrated list G.P.T. 104. to nearest socket. INSTANTA ELECTRIC LTD. ENGINES & ELECTRICS 48 OLD CHURCH ST., CHELSEA, S.W.3 T E L E P H O N E : F L A X M A N 3531/2 3, ST. JAMES SQUARE • LONDON • SUM

A.I.D. APPROVAL Part I.

We make Trans­ 1 formers of many V DHFLEX types up to 10 kVA for industrial pur­ poses. Supplied to all branches of the m suLHTinc Services and built and tested under conditionsasgruel- ling as those pre­ SLEEUMG5 vailing in opera­ tional areas, they ★ represent the last word in reliability. VARNISHED t UNVARNISHED Send us your enqui­ rie s ; we may be able to help YOU. You GLASS, SILK can rely on Woden Equipment. AND COTTON which comply with AIR MINISJRY and other specifications

IONES STROUD & Co. Ltd., VIDA MILLS, LONG EATON, NOTTS. Telephone: Long Eaton 404/6 January 12, 1945 E l e c t r ic a l R ev ie w 67

EVERYTHING ELECTRICAL

From a Screw to a Switchboard.

Comprehensive Stocks of Switchgear, Cables, Lamps, Conduits, Fittings and all Accessories.

I f \ ELECTRIC C° LT1 WHOLESALE ELECTRICAL DISTRIBUTORS 10 LOWER 6R0SVEN0R PLACE, LONDON, S.W.1 Telephone : VICTORIA 5762-7 (6 lines)

YEARS PRESSINGS • STAMPINGS • SPINNINGS E°r 35 years this Company Whatever form the new roads take in has been engaged in the production of Pressings, the post-war world, Gowshalls will be Stampings, Spinnings, Sheet ready to sign Jj1^ them as before Metal Work, Capstan and Automatic Work for the ELECTRICAL INDUSTRY. Fully approved A.I.D. GOWSHALL LIMITED MANUFACTURERS OF ROAD DIRECTION SIGNS ST. PAULS STREET, WALSALL, STAFFS. AND LAMB’S CONDUIT PASSAGE, LONDON, W.C.I

A TUBE INVESTMENTS GROUP COMPANY ttTijj On M.O.S., Admiralty and M.A.P. Lists

REGENT PLACE, BIRMINGHAM I 68 Electrical Review January 12, 1945

WRITE FOR DETAILS OF THESE NEW AND EFFICIENT TIN AND LABOUR Here is a SAVING DEVICES TO: s e c tio n o f our test department showing synchronous motor driven solar ERMA LIMITED time switches undergoing running tests. Scientific testing at all stages of manufacture has helped to build the unsur­ HONG KONG WORKS passed reputation for reliability held by H.B.E. time switches EXHIBITION GROUNDS WEMBLEY. MIDDLESEX A PRODUCT Of AIRCRAFT-PURINE PRODUCTS INC. HARRISBURG, PA. H.B..E!. T'ME switches— —

The HORSTMANN GEAR Co. Ltd., BATH. Phone: 7241

AUTOMATIC VOLTAGE, A.C. FEEDER SPEED AND OTHER REGULATORS A.C. D.C. COX=WALKERS LTD. UNIVERSAL COXPAR DARLINGTON “FRACHO” FRACTIONAL H.P. MOTORS T o ta lly For Every Purpose E n c lo s e d Delivery of urgent priority orders as follows :— PISTON 1150th— I 30th h.p 5-6 weeks 1,20th— I 8th h.p ...... 6-7 w e e k s 6-250 volts HUM H.P. MOTORS ITD. PUHPS ROOKERY W AY, HENDON, N.W.9 ASSOCIATED PUMPS LTD. C O L IN D A L E 8022-3 73-77 Britannia Rd., LO N D O N , S.W.6 January 12, 1945 E l e c t r ic a l R e v ie w

— €€S ¿ft p e n ce —

at the service of the Empire

G.E.C. electric baking ovens are used in every kind of bakery, on land and in ships. G.E.C. Electrification Schemes have been Large baking concerns have well proved the high produc­ applied to all industries, tive and operating efficiency of the long travelling type of including: Aircraft oven illustrated, but the entire range is characterized by Factories; Chemical reliability, convenience, economy and simple working. Works ; Collieries; Food During the war the vast G.E.C. technical and manufactur­ Factories; Gold Mines; ing resources are devoted to one purpose—providing Iron, Steel and Copper equipment to help win the war quickly. W orks; Locomotive and Railway Carriage and When peace returns, the important advances made by Wagon Works : Motor the Company in every application of electricity, including Car Works; Ships and electronics, during this period of great endeavour, will be Shipyards; Textile available to all concerned with electrification schemes in Mills, etc., etc. any part of the world.

( S C ! tUutoufs ü t i/te ftfteficni c f elecluceUpwyJiett

THE GENERAL ELECTRIC CO. LTD.. MAGNET HOUSE, KINGSWAY, LONDON. W.C.2 January 12, 1945 70 E l e c t r ic a l R e v ie w

.„ s in g a n toe exten^ labYe and P°fssutostances

ePenCi s^ e U c ® ai ijss-ssr? ^,d u c e sY soW.^«fiss? ^ ^ o w n as i^afcs^rJESss^^-s^.«»^ oIp”is**51?-» *-s : ^l^ulanon leW to® lirf o r caPto ffluswatodffluswaied c ^cto^ch, ^ ^ e quan reVeals ^a

*#*allied lied to- —cons^ ^ ^ ^ v ^U to9 f e°e

iSlSfS. —sft ** “

ss*s£^*esubstances «■m m e m V

W ¿ a M t f c o U ^ tk i cuVwn-

T. HENLEY’S TELEGRAPH WORKS CO. LTD.. MILTON COURT. WESTCOTT. DORKING. w. January 12, 1945 E l e c t r ic a l R e v ie w 71

m o u l d e d ESIiTANci 3 h a n d w h e e l s FOR ALL PURPOSES “ Cressall ” Sliding Resistances are manufactured in an immense variety of types and sizes to meet every known requirement. Every “ Cressall ” Re­ sistance is of sound design and incorporates th e best possible w o rk m a n sh i p— ye t

STANDARD SIZES IN PRICES ARE COMPETITIVE BAKELITE If—7'

Saves Metal and Machining Time

Improves Appearance, Costs Less

L E A F L E T FROM 31 & 32 TOWER STREET R A Y ENGINEERING BIRMINGHAM Phone: Aston Cross 3463/4 CO. LTD. Grams: Ohmic, Birmingham

Southmead Bristol Please send us your enquiries— antfask for descriptive literature PORTABLE TOOLS

WRITE FOR CATALOGUE E.R./HO DETECTS A FAULTY EARTH LEAD a t o n c e AUASTKA by passing a 15/20 amp. testing cu rren t through the earth wire. The importance of H1GH P O L E S regular testing is officially stressed. W rite TENSION r W Lm I- for pam phlet A 54. n«, . — I TD TYBURN R? ERDINGTON. BRITISH CENTRAL ELECTRICAL CO. LTD. POLES L _ BIRMINGHAM. 2 4 . 6-8 Rosebery Avenue, London, E.C.I. TERminus 252S

G January 12, 1945 E l e c t r ic a l R e v ie w 72 inert 7 M O u t d o o r % £ r - specialiy designed e developed by

\ % ;\ I k v

These are views of a typical || kV equipment. It is also available for 3.3 kV, 6.6 kV, 22 kV, and 33 kV systems.

Manufacturers— S S S . m am i HQOKHAH LTD., BIRMINGHAM Janua,y 12, 1945 E l e c t r ic a l R e v ie w (Supplement) 73 -CLASSIFIED ADVERTISEMENTS- ? EP£ IE? T? advertisements published under a S S S a « as ssra Box Number if not to be delivered to any particular S.E. 1 Dorset House, Stamford Street, London, firm or individual should be accompanied by instruc- effect, addressed to the Manager of the is*?/- <2 ? ^ GE ,for advertisements in this Section ELECTRICAL REVIEW. Letters of applicants in minimnm >. r® <»PProx- 8 words) per insertion, such cases cannot be returned to them. The name 30/- D er W l “oa 4/‘. or for display advertisements oi an advertiser using a Box Number will not be the adLi« ’ h -a “ numum of one inch. Where disclosed. All replies to Box Numbers should be aneJrih ^ hst T Ilt meludes a Box Number there is i d P°i dumber m the advertisement, l t f T T ^ . ™ £ arge of 6d' for Postage of replies. c/o ELECTRICAL REVIEW, Dorset House, Stam­ uilVth ?N?- w a NTED. - Three insertions ‘“der this heading can be obtained for the price of ford Street, London, S.E.l. Cheques and Postal two it ordered and nrenairi with fho fir-of ordered and prepaid with the first insertion. KisVRPvrewiTH 1BW LTD. and *?ade crossed. Payable to ELECTRICAL Original testimonials should not be sent with applications for employment.

OFFICIAL NOTICES SHEFFIELD CORPORATION ELECTRICITY TENDERS, ETC. DEPARTMENT

GELLYGAER URBAN DISTRICT COUNCIL Temporary Appointment ot Contracts Engineer and Clerk of Works fJHEXDERS are invited for the supply and delivery of: A PPLICATIONS are invited for the position of Con- iP.^001 and Outdoor Transformers, tracts Engineer and Clerk of Works. Whilst the lb) Riosk complete with switchgear and accessories. (c) E.H.T. and L.T. Cable. vacancy at present advertised is a temporary one. oppor­ (d) Overhead Line Equipment. tunities will be occurring for the holder, if satisfactory, to (e) Wood Poles. nil a future vacancy on the permanent staff. Applicants must have had a thorough mechanical engi­ Specification and tender form may be obtained from neering training, preferably including experience in a the Electrical Engineer and Manager. Electricity Offices. manufacturing engineering works, and possess a degree Hanbury Road. Bargoed. Glam. or equivalent technical qualifications admitting to Cor­ Tenders, in plain sealed envelopes (which must not bear porate Membership of the Institution of Mechanical and/ any mark or. name indicating the sender), bearing the or Electrical Engineers. words “ Tender for ------.” must reach me not later than The successful candidate will be required to give general !0 a.m. on Saturday, the 3rd day of February. 1945. assistance with the extensions at the generating stations The Council does not bind itself to accept the lowest and supervise the erection of the plant, also to carry out or any tender. such additional duties as may be assigned to him. BERNARD M. M URPHY. The salary will be in accordance with Class M. Grade 7. Council Offices. Clerk of the Council. Hengoed. Glam. of the National Joint Board Scale. Supplemental Schedule lcb *s. a^ Present £618. and the successful candidate 1st January. 1945. 1220 will be required to pass a medical examination. Form of application may be obtained from the under­ signed. Canvassing or any communication with a member SITUATIONS VACANT______the Council, either directly or indirectly, is prohibited, and will be a disqualification. None of the vacancies for women advertised in these columns relates to a woman between IS and 41 unless such The latest date for receipt of application is Monday. woman (a) has living with her a child of hers under the 29th January. 1945. age of 14. or (6) is registered under the Blind Persons Acts, JOHN R. STRUTHERS. or (c) has a Ministry of Labour permit to allow her to _ . , ^ General Manager and Engineer. obtain employment by individual effort. Commercial Street. Sheffield. 1. 2nd January. 1945. 1231 COUNTY BOROUGH OF EASTBOURNE

Electricity Department ROYAL TECHNICAL COLLEGE, SALFORD (Principal: J. E. Richardson. Ph.D.. B.Eng.. Chief Clerk and Administrative Assistant M.I.E.E.. A.M.I.Mech.E.)

A PPLICATIONS are invited for the position of Chief A PPLICATIONS are invited for the post of full-time Clerk and Administrative Assistant with the above f-1- Lecturer in Electrical Engineering, to commence Undertaking. duties as soon as possible after Easter, 1945. Applicants Applicants must have had a sound commercial training must have had industrial experience and be capable of and extensive experience in the administrative work of an teaching Design of Electrical Machinery up to the Higher Electricity Undertaking, including modern methods of National and London University Final B.Sc. degree stan­ costing, preparation of accounts, framing of tariffs, etc.. dard. together with at least one other advanced electrical and the control of clerical staff. subject. The salary will be £450 per annum, plus war bonus (at Salary in accordance with the Burnham Technical Scale, present £60 per annum). plus war bonus, with allowance for approved industrial The appointment is subject to the provisions of the experience. Local Government Superannuation Act. 1937, and the selected candidate will be required to pass a medical Application forms and further particulars may be examination. obtained from the Principal. Royal Technical College. Form of application may be obtained from the under­ Peel Park. Salford 5. Lancashire, to whom applications signed. and this should be completed in candidates’ own should be returned not later than 22nd January. 1945. handwriting and returned in a plain sealed envelope en­ H. H. TOMSON. dorsed “ Chief Clerk and Administrative Assistant.” not Clerk to the Governors. later than Monday. 5th February next, to the under­ " 1182 mentioned address. N. BOYDELL. M.I.E.E.. A.M.I.Mech.E.. ASSISTANT Storekeepers (2). exempt or discharged Borough Electrical Engineer ^ military service, with knowledge electrical/radio St. Winifred’s. and Manager. apparatus, required for American company’s King's Cross Fairfield Road, premises. Salary £4—£4 10s. p.w. according experience' Eastbourne. Apply, giving age. experience.—Box 1225. c/o The Elec­ January. 1945. 1244 trical Review. 74 (Supplem ent) E l e c t r ic a l R e v ie w January 12, 1945

FTER restrictions on the engagement of labour are SENIOR Storekeeper required by electrical wholesale A removed a well-established firm of electrical power ^ distributors, London area, with considerable experi­ switchgear and domestic appliance manufacturers in the ence and a sound knowledge of all materials usually London area desire to engage men for the following per­ stocked. Permanent and progressive position for suitable manent positions: (a) Draughtsman to take charge of applicant. State fully in confidence details of positions small drawing office; (b) Draughtsman for development previously held, and present employment, age, and salary of new electrical equipment; (c) Works Engineer with required.—Box B.H.D., 1229. c/o The Electrical Review. knowledge of tool design and production, and able to QTORES Assistant with knowledge of electrical acces- supervise plant maintenance. Applicants should write as ^ sories required by London wholesaler. Apply by soon as possible, giving fullest details of previous ex­ letter.—Messrs. Bennett & Fountain Ltd., 122, Great perience, employers and salaries earned. This information will be dealt with in strictest confidence. Only men of Titchfleld Street. W .l. 1230 initiative and with sound experience need apply to—Box OTORES Clerk required by electrical wholesalers. Good 1215, c/o The Electrical Review. ^ knowledge of electrical material essential. Apply— PPLICATIONS are invited for the position of Shift London Electrical Company. 92, Blackfriars Rd., S.E.l. 25 A Charge Engineer at a large North-West industrial HPECHNICAL Commissions in H.M. Forces. Vacancies power station working in conjunction with the “ Grid.” for Engineers and Tyre Specialists as indicated below Candidates must have had a good practical and technical exist in the Corps of Royal Engineers and Royal Elec­ training in electrical and mechanical engineering, and trical and Mechanical Engineers for general service. Appli­ experience in the operation of water tube boiler and cations will be received from candidates up to 45 years turbo-alternator plants. Applications, stating age and of age who are fit for such service. Candidates need not giving full particulars of experience and training, accom­ be in possession of a university degree or other professional panied by not more than three testimonials, to be sent qualifications, although this is desirable, but they should to—Box 1201. c/o The Electrical Review. possess technical qualifications at least up to the standard PPLICATIONS are invited for the post of Assistant of Higher National Certificate. (1) Electrical and Mechani­ A Substation Attendant. Applicants must have ex­ cal Engineers (Ref. No. C.2007A): Considerable practical perience in the control of high and low tension switch­ experience is essential and candidates are expected to be boards, and in the operation of rotary convertor plant. familiar with the maintenance of medium or heavy types Conditions of service and rates of pay in accordance with of standard equipment. Applications will be considered D.J.I.C. No. 11 Area—present rate £4 17s. 6d. per week. from candidates experienced in any branch of electrical, Applications, stating age, details of experience and en­ mechanical or refrigerating engineering, but greater closing copies of two testimonials, to be addressed to the emphasis will be laid on the candidate’s aptitude to handle undersigned not later than 22nd January, 1945. — F. labour and improvise rather than on experience of pre­ Swarbrick, Engineer and Manager. Hove Corporation cision work under factory conditions. A general engineer­ Electricity Department, Hove Street. Hove. 3, Sussex. ing apprenticeship, followed by practical experience in 1240 one of the following branches, is desirable: Erection and /"10NTR0L Engineer required to operate modern E.H.T. maintenance of cold storage plants, general machine shops, large prime movers of all types, power distribution, etc. ^ board and D.C. switchboard at generating station (2) Mechanical Engineers for Port Maintenance and Inland in Home Counties. N.J.I.C. rate 2s. 4id. per hour. State Waterways. Transport Workshops, Royal Engineers (Ref. experience, age. married or single, to — Box 1216, c/o No. C.2008A ): A general mechanical engineering appren­ The Electrical Review. ticeship in heavy industries is essential, together with NGINEER and Manager wanted by a firm of con­ experience of cranes and ropeways and erection and main­ E tractors for branch establishment in the Midland tenance of heavy oil or gas engines. (3) Tyre Repair area. Applicant must have had considerable contracting Specialists for R.E.M.E. (Ref. No. C.2009A): Experience experience, and be able to do own estimating and prepara­ in the installation, maintenance and operating of modern tion of working drawings. Commencing salary £500. tyre repairing machinery is desirable. Candidates must Write, stating age, experience, etc.—Box 1223, c/o The be capable of inspecting and conditioning tyres and tubes Electrical Review. and have a thorough knowledge of tyre repairing, tyre ECTURER in Radio, to assist in the training of Naval capping and re-treading. The final selection of candidates L Radio Mechanics. The candidate must have had a will be made as a result of an interview by a W ar Office good education in electricity or physics and have a satis­ Selection Board, who may recommend accepted candidates factory knowledge of radio theory and practice. Salary either for a direct commission or for commissioning after £350 p.a.—Electrical Department, Robert Gordon’s Tech­ a period of satisfactory service in the ranks. Applicants nical College, Aberdeen. 1187 should write, quoting the appropriate reference number, to the Ministry of Labour and National Service. Central UTSIDE Technical Representative required. Should (T. and S.) Register. Room 5/17, Sardinia Street, Kings- O have established personal contacts with radio de­ way, London. W.C.2, for the necessary forms, which signers. Experience in design or manufacturing depart­ should be returned completed on or before 15th February. ment of radio manufacturers desirable. Salary about £600 1945. 1222 p.a. Age 30-45 years. — Box 1226, c/o The Electrical Review. rpH E services of a really capable creative Designer required by a medium-sized firm with factories in EPRESENTATIVES required by wholesalers for London and South Midlands, engaged in the marine, R London area. Only men with live connections and agricultural and amusement park equipment fields, for commission basis. Superannuation scheme in force.—B'ox position vacant immediately after removal of present 1227, c/o The Electrical Review. restriction of employment. Write in confidence, full EQUIRED for engineering works engaged on Govern­ details of past experience, salaries, etc.—Box 1250. c/o R ment work. Cricklewood area. Shorthand-Typist or The Electrical Review. Ediphone Typist. Please reply, stating experience and salary required, to—A. T., c/o Streets. 110, Old Broad TRAVELLER wanted immediately for London firm of Street. E.C.2. 1249 engineers’ agents. Knowledge of springs, stampings, TORES Assistant (permanent) required at once. Write, spinnings, etc., an asset. Particulars of qualifications, S stating age. salary required and electrical stores ex­ experience, age and salary required, to—L. H. Reid & Co.. perience. to—Wholesale Electric Co., 37, Vauxhall Bridge Abford House. Victoria. S.W.l. 1219 Road. S.W .l. 1218 YPIST Book-keeper required for electrical contractor’s QUBSTATION Engineer, Borough of Barking. Appli- T office. Permanent position. Write full particulars ^ cants must be Corporate Members of the I.E.E. or and sal. expected.—W. H. Smith, A.I.E.E., 172. Ken- hold an equivalent qualification and must have had tech­ nington Park Road. S.E.ll. 6608 nical and practical experience of all work connected with T170RKS Manager required in London by firm of elec- rotary, rectifier and static substations. The selected "» trical measuring instrument manufacturers. Must applicant will be responsible for the design of substations, be fully conversant with production control, time study, design of all equipment, protective and supervisory sys­ individual and mass production methods. Permanent tems. preparation of estimates and forms of tender, position with good prospects. Write, giving full particu­ responsible for equipping, operating and maintaining all lars of past experience and salary required—Box 1241, substations, also responsible for substation and fitting c/o The Electrical Review. staff Salary £471 p.a., in accordance with Class F. Grade 6, of the N.J.B. Schedule. The appointment will be subject to the Local Government Superannuation Act. 1937, after six months’ probationary service and a satis­ APPOINTMENTS FILLED factory medical report. Applicants should write, quoting Dissatisfaction having been so often expressed that un­ D.1028XA. to the Ministry of Labour and National successful applicants are left in ignorance of the fact that Service. Central Register. Room 5/17. Sardinia Street. the position applied for has been filled, may we suggest Kingsway. London. W.C.2, for the necessary forms, which that Advertisers notify us to that effect when they have should be returned completed on or before 22nd January. arrived at a decision? We will then ifisert a notice free 1945. 1233 of charge under this heading. January 12, 1945 E l e c t r ic a l R e v ie w {Supplement) 75 SITUATIONS WANTED FO R S A L E

e l e c t r i c a l a n d m e c h a n i c a l Traders buying and selling hereunder must observe the Restriction of Resale Order. S. R . & O. 1942 No. 958. engineering GEORGE COHEN. SONS & CO. LTD. for T>l-\ER requires change to progressive nrm, age 40. keen enthusiastic worker, GUARANTEED ELECTRICAL conversant with large purchases.—Box 6640. c/o The Electrical Review. PLANT.

A DVERTISER (45), desiring change, requires situation MOTORS. GENERATORS. as Salesman, Asst. Buyer. Order Clerk, etc. Many years electrical trade experience.—Box 6620. c/o The Electrical Review. SWITCHGEAR. A .M.I.E.E.. A.M.I.Mech.E.. seeks interesting spare time f r ™or2*. Central or West London area.—Box 6605. c/o etc. The Electrical Review. A .M.I.E.E. (39). construction, operation and main- WOOD LANE. LONDON. W.12. tenance power stations. O.H. and U.G. distribution Telephone: Shepherds Bush 2070 systems, practical, technical and commercial exp. elec­ tricity undertakings. Situation desired overseas.—Box and 6614. c /o The Electrical Review. STANNINGLEY. NEAR LEEDS. A S Department or Technical Manager in electrical mfg. Telephone: Pudsey 2241. TV, firm, experience in design, manufacture, sales. B.Sc.. - .M.I.E.E.. London district.—Box 6616. c/o The Elec­ Established 1834. trical Review. D.Sc.. A.M.I.E.E., with wide technical and practical J-* experience of elect, distribution systems, specifica­ REBUILT MOTORS AND GENERATORS tion and purchase of H.T. switchgear. age. 32. exempt, seeks progressive post.—Box 6624. c /o The Electrical Review. T ONG deliveries can often be avoided by purchasing rebuilt secondhand plant. We can redesign or replace /"'IHIEF Draughtsman or Designer. Engineer with varied surplus plant of any size. y ' mechanical and electrical experience (not radio), design, planning, tools and production, desires responsible SEND US YOUR ENQUIRIES. post. S.W. London area preferred.—Box 6612. c/o The Electrical R eview. OVER 1.000 RATINGS ACTUALLY IN STOCK HERE 'C'LECTRICAL and Mechanical Engineer desires to con- tact small manufacturer with view to producing his designs (domestic apparatus), which should have large DYNAMO & MOTOR REPAIRS LTD.. demand in post-war period.—Box 6602. c/o The Elec­ trical Review. Wembley Park, Middlesex. X^LECTRICAL Engineer, A.M.I.E.E., desires post as Telephone: Wembley 3121 (4 lines). Works Engineer. 25 years’ experience, maintenance, construction, electrical and mechanical, age 44. exempt. Also at Phoenix Works, Belgrave Terrace, Soho Road, —Box 6603. c /o The Electrical Review. Handsworth, Birmingham. X^LECTRICAL Engineer. B.Sc.. A.M .I.E.E., 17 years* f- * varied experience in responsible positions with lead- Telephone: Northern 0898. iug manufacturing companies, requires post of high 26 responsibility giving scope for initiative. Consultative work considered.—Box 6623. c/o The Electrical Review. ELECTRIC MOTORS AND DYNAMOS X^LECTRICAL Engineer, supervise installation con- tracts or factory maintenance. 28 years’ experience, good organiser, labour control, age 44 years, seeks AAT-E hold one of the largest stocks of New and Second- responsible position. Now disengaged.—Box 6629, c/o * * hand Motors. Secondhand machines are thoroughly The Electrical Review. overhauled. Inspection and tests can be made at our "C^LECTRICAL/Mechanical Engineer, sound commercial Works. background, experienced on rural and similar develop­ ment. H.T. and L.T. distribution, electrical installation For Sale or Hire. Send your enquiries to: — and factory maintenance, desires position with scope in post-war period. Preferably with rural supply authority BRITANNIA MANUFACTURING CO. LTD.. where initiative and experience will be utilised and appre­ 22-23. BRITANNIA STREET. ciated.—Box 6601. c/o The Electrical Review. CITY ROAD. LONDON. N.I. T^LECTTRO-Mechanical Engineer (35). A .M .I.E.E.. etc.. seeks London appointment. Free in one month. Telephone: 5512-3 Clerkenwell. 13 Now holding executive position covering sales, drawing office, installation and service departm ents.—Box 6610. c/o The Electrical Review. ARC WELDING MACHINES FROM STOCK "p^OREMAN. 20 yrs.’ experience radio receivers, trans- mitters. D.F. equipment, amplifiers, ground com­ W fE offer our latest type No. 2 Max-Arc Welder for munication equipment, desires change, view promotion.— ** immediate delivery. 15/250 amperes. Operates off Box 6628. c /o The Electrical Review. any A.C. supply voltage. Send for details. ¡VTANAGER. electricity service centre. 25 years’ engi- neering experience. M. & E.. B.O.T. Cert.. E.D.A. MAX-ARC WELDERS LTD.. Sales Engrs.’ Diploma, seeks similar post with electricity undertaking with good scope for future development. 190. THORNTON ROAD. CROYDON. First-class development record, sales and consumers, ex­ THOrnton Heath 4276-S. pert on all types of domestic apparatus and appliances, ______35 motors, pumps and machinery generally, responsible for H.T. and L.T.. town and rural supply maintenance, good ECONOMISERS IN STOCK organiser, keen worker. Present post (voluntary from outbreak of war), shift supt. engr. over 300 employees. Release possible in near future owing to moving of works. TWO Green's Economisers. 208 tubes. 250 lbs. W.P. Please reply in confidence, giving first details, to—Box 6613. c/o The Electrical Review. Guaranteed re-insurable and first-class condition only, ACUUM and Electronics research. Controlling position low prices. Quotations per return. Installations delivered V required. Salary £750.—Box 6626, c/o The Elec­ and erected complete. trical Review. OUTH. 16 yrs.. secondary school education, seeks BURF0RD, TAYLOR & CO. LTD., Y situation in distribution department or drawing 7. Commercial Street. Middlesbrough. Telephone 2622. office.—Box 6627. c /o The Electrical Review. 65 76 (Supplem ent) E l e c t r ic a l R e v ie w January 12, 1945

WATER TUBE BOILERS IN STOCK LTERNATING petrol /paraffin Sets. 400/3/50. direet A coupled on bed. First-class order. 25 kVA. 35 kVA. 50 kVA, 70 kVA. Fully tested, for quick delivery. Foul 25.000 lbs. «vapor&tion, 175 lbs. W.F. —The Electroplant Co.. Wembley. Middx. 1235 Three 20.000 lbs. .. 175 lbs. .. lte r n a to r. 500 kVA. 3-p.. 50 c.. 400/440 v.. 750 One 15.000 lbs. .. 175 lbs. .. A revs., direct coupled exciter, 2 brgs., on bedplate. One 12,000 lbs. .. 175 lbs. .. —Stewart Thomson & Sons, Fort Road. Seaforth, Liver­ One 12.000 lbs. .. 200 lbs. .. pool, 21. 58 One 12.000 lbs. ,. 160 lbs. .. EST English Cables. 1/.044 up to 127/. 103. deliveries One 9/10,000 lbs. ,, 200 lbs. .. B against M.O.S. requirements.—Edwardes Eros.. 20. We install complete, including brickwork. Economisers. Blackfriars Road. London. S .E .l. 6631 Pumps. Piping Valves. Generating Sets and Motors in .T.H. Turbine Generating Set, 625 kVA, 400-3-50. 6tock. Please send us your enquiries; we can give B Turbine of the mixed pressure type. High pressure immediate delivery. steam. 115/116 lbs. per sq. inch. Jet condenser by Mirr- lees Watson. Alternator type ABT, 625 kVA. .8 p.f. B U R F O R D . T A Y L O R & CO. LTD ., Complete with switchboard.—Berry Hill, Plant Division. Boiler Specialists, Middlesbrough. New Haden Colliery. Cheadle. Staffs. Phone 2181. 1247 Telephone: Middlesbrough 2622. /CARBONS, large stocks assorted sizes, solid and cored.— ^ Edwardes B t o s . , 20, Blackfriars Road, London, S.E.l. 6632 RY Batteries, superior quality, to meet special re­ CITY OF SALFORD D 1quirements where high capacity and keeping qualities are essential. Manufactured by—L. Hayes Smith, 281. Electricity Department Broadway. S.W.19. 6609 VERETT Edgcumbe Maximum Demand Indicator, E with alarm -bell, complete with synchronous clock OE sale. One 7-panel metalclad Switchboard, suitable and transformers, etc. Offers to and details from—Box F for use on a 6.600-volt. 3-phase. 50-cycle system, 1228, c/o The Electrical Review. comprising 6 300-amp. Oil Circuit Breaker Units, B.C. X^XHAUST Fans, new, 14", 1-phase, 200/250 v., 1.900 100 mVA. and one Metering Equipment Unit, made by cu. ft./min., £11 15s.—Southern Ignition Co. Ltd.. Switchgear & Cowans in 1935. 190, Thornton Road, Croydon. 75 Particulars and form of tender may be obtained from OUR identical 150-kW. “ Weir Sulzer/E.C.C." the City Electrical Engineer, Frederick Eoad. Salford. 6. F Diesel-driven Generating Sets, 220 volt D.C.—Stewart H . H. TOMSON, Town Clerk. Thomson & Sons, Fort Rd., Seaforth. L’pool, 21. 74 1221 ENERATING Sets for sale, 18 kVA, petrol. 400/3/50; G 300-amp., petrol-driven Portable Welding Set.—Fyfe. MODI NSTAL ELECTRIC COMPANY LIMITED Wilson & Co. L td., Bishop’s Stortford. 1236 INDUSTRIAL INFRA-RED APPARATUS FOR NSU-Glass covered Plain or Enamelled Instrument PAINT DRYING. I Wires, No. 18 s.w.g.. No. 40 s.w.g., stock deliveries. COMPLETE EQUIPMENTS OR SINGLE UNITS —Saxonia, Roan Works, Greenwich. S.E.10. 29 PROVIDED. ARGE quantity of spares for 150-h.p. Ricardo engines, GUARANTEED HEAT GENERATORS. L including a complete engine.—Fyfe, Wilson & Co. Ltd.. Bishop’'s Stortford. 1238 OLDHAM WORKS, OLDHAM TERRACE. EAD-covered and Armoured Cables, P.I. and V.I.R.. ACTON, W.3, LONDON. L various special lines at low prices.—Edwardes Bros.. Telephone: Acton 3504/5. 20. Blackfriars Road. London, S.E.l. 6633 M.E.C. APPARATUS, DULL EMITTER SYSTEM. ESLIE Dixon & Co. for Dynamos, Motors, Switchgear. ______59 L Chargers and Telephones.—214. Queenstown Road. Battersea, S.W.8. Telephone, MACaulay 2159. Nearest MAN POWER IS MULTIPLIED Rly. Sta.: Queen’s Road. Battersea (S.R.). 18 1%/rAY we send our Engineers’ Stethoscope on approval by the installation of -LVX (without obligation)? Particulars on request.—Capac MORGAN ELECTRIC LIFTING BLOCKS. Ltd.. 2. Ullswater Road. London. S.W.13. 78 OTOR Generator Sets and Convertors, all sizes and M voltages from £ kW up to 500 kW in stock.— All capacities A.C. and D.C. Supply. Britannia Manufacturing Co. Ltd., 22/26. Britannia Walk. Delivery from 2-3 days. City Road. London. N.I. Telephone. Clerkenwell 5512. 5513 & 5514. 28 MORGAN LIFTWAYS & P0WERWAYS, AMEPLATES. Engraving, Diesinking. Stencils. Steel 50, W IL K IN STREET. N.W .5. N Punches.—Stilwell & Sons Ltd., 152, Far Gosford ______Gul- 1147.______47 Strept. Coventry. 14 ORCELAIN Cleats, 2 and 3 groove, various sizes ex B U R D E T T E & CO. LTD. P stock, price list.—Edwardes Bros., 20. Blackfriars Road. London. S .E .l. 6634 Stock ORCELAIN Insulators, various sizes in stock, gaiv. P spindles.—Edwardes Bros., 20. Blackfriars Road. Reconditioned A.C. and D.C. Motors and Starters Equal London. S .E .l. 6635 ORTABLE Engine-driven Welding Sets, output 75/ to New. P 350 amps., brand new. Government licence to pur­ STONHOUSE STREET. CLAPHAM. S.W.4. chase. delivery stock.—Gladiator Welder Sets Ltd.. 18. Leicester Road. Sale. Manchester. 49 Day and night service. MACaulay 4555. OTARY Converters in stock, all sizes: enquiries R invited.—Universal Electrical. 221, City Road. ______17 London. E.C.l. 16 SEVERAL Telescopic Tower Ladders ready for essential large stock of surplus Carbon Rods. Ebonite. Fibre. work. Extensions, Trestles and Steps to order.— A A.I.D. Turnbuckles. etc., also Searchlights (sale or Shaftesbury Ladders Ltd.. 453, Katherine Road. E.7. hire). Mirrors, Lenses, also Winches of our well-known self- Grangewood 3363. 15 sustaining types. Hundreds of thousands supplied during QHAFTESBURY Public Address System, amplifier set. the last 40 years to Govt, depts.. corporations and in­ ^ ribbon microphone, two loudspeakers, for 230-volt numerable traders.—London Electric Firm, Croydon. 42 A.C. m ains.—Box 1224, c /o The Electrical Review. .C. and D.C. House Service Meters, all sizes, quarterly OINGLE-core V.I.R., Braided Flexible, heavy insulation. A and prepayment, reconditioned, guaranteed one year. carry 24 amps., cheap.—Edwardes Bros., 20, Black- Repairs and recalibrations.—The Vlcta Electrical Co.. 47. friars Road. London, S .E .l. 6636 Battersea High Street. S.W .ll. Tel. Battersea 0780. 19 SPECIAL line. Bell and Telephone Wires, also screened .C.-driven Plating Dynamo. 1.000 amps.. 16 volt, 570 wires, large quantity, cheap.—Edwardes Bros.. 20. A r.p.m., direct coupl. on bedplate, reconditioned.— Blackfriars Road. London, S .E .l. 6637 The Electroplant Co., Wembley. Middx. 1234 OTAFF Time Checking and Job Costing Time Recorders .C. Motors. 1 / 50th h.p. to 3 h.p., from stock, for ^ (all makes) for quick cash sale. Exceptional con A essential work only.—The Johnson Engineering Co.. dition. W rite— Box 528, Smiths, 100. Fleet Street. 5. Spencer Street. Leamington Spa. 57 London. E.C.4. 31 ERIAL Cables, all sizes quoted for; good deliveries Q WITCH and Fuse Units. Conduits and fittings, works A against Government contract numbers.—Edwardes requirements stocked.—Edwardes Bros., 20. Black­ Bros., 20. Blackfriars Road, London. S.E.l. 6630 friars Road. London, S.E.l. 6638 January 12, 1945 E l e c t r ic a l R e v ie w ( Supplem ent) 77 rpOTALLY enclosed, dustproof, 30-h.p„ 220-volt, 650- REWINDING AND REPAIRS J- r.p.m D.C Motors (3), by General Electric Co.— Britannia Manufacturing Co. Ltd.. 22/26, Britannia Walk, London. N .I. 1242 E rewind and repair any motors. A.C. or D.C., from rjPRANSFORMER Lead-in Wire, 7/38 and 14/38 s.w.g.. W 1 h.p. to 500 h.p. Motors lent while repairs are being Insu-Glass finished. various colours, stock.—Saxonia. carried out. Established over 24 years. Greenwich. S.E.10. 34 rpRANSFORMERS, single and three-phase. All types ^ a —Woden Transformer Co. (Phone. W. H. SU G D EN & CO. LTD., Elision 41959). Moxley Road. Bilston. Stall's. 12 Glenny Road, Barking, Essex. T.R.S. Cables and Flexibles, Welding Cables, supplied to M.O.S. requirements.—Edwardes Bros., 20. Black- Phone. Rippleway 3302. friars Road. London, S .E .l. 6639 48 40-h.p. Motors, 220 v. D.C., 1,400 r.p.m.; others at 2 700/800 r.p.m. and 600 r.p.m.—Fyfe. Wilson & Co. ONSULT us for all types of A.C./D.C. Windings. We Ltd., Bishop’s Stortford. 1239 C are the trade rewinders of both repair and repetition OK-kW Browett Steam Generating Set. 220 volts D.C.; armature and stator windings, etc.—Hodson (Electrical OO Weir Feed Pum p, 104" X 7" x 21"; 60-kW Allen Engineers), 75a, George St.. Croydon. Phone, Croydon Crude Oil Generating Set. 220 volts: Fuel Oil Tank. 17' x 1568. 6621 6' dia.—Harry H. Gardam & Co. Ltd.. Staines. 60 LECTRICAL Measuring Instruments skilfully repaired Cfk-volt Lighting Set complete and in working order. E and recalibrated. — Electrical Instruments Repair Alpha Petter Engine, just overhauled. Offers to— Service, ” Stanimede,” Forlease Road. Maidenhead. 6617 Banks. 2, Vernon Avenue. Woodford Green. 6618 Ti/fACHINING Work, for Centre Latnes up to 64 in. QCfVkV A Alternator. 400 volts, 3-phase, 50 cycles. 750 -LT-L centres and medium-sized milling (good grade work revs., with direct coupled exciter.—Midland Coun­ preferred).—The London Electric Firm. Croydon. Up­ ties Electrical Engineering Co. Ltd.. Grice Street, Spon lands 4871. 56 Lane. West Bromwich. 36 EPAIRS. Clockwork Controllers, Time Switches. Q /^ri-h.p. Slipring Motor by Mather & Platt, wound for R Clocks and every kind of clockwork appliance used O vJv/ 500/550-3-50 and speed at 1.470 r.p.m. Com­ in connection with electricity repaired quickly by skilled plete with starter. Motor and starter. FLP-Buxton certi­ staff. Inquiries welcomed. Representative will call in fied. first-class condition, never been used.—Berry Hill. London area if required.—J. W. & R. E. Hughes. 58, Plant Division, New Haden Colliery, Cheadle. Staffs. Victoria Street. London, S.W.l. Phone. Victoria 0134. Phone 2181. . 1248 6417 rifV kW Metropolitan-Vickers Rotary Convertor, with QPARE-time Drawing Board Work wanted, preferably ‘dtvJVJ starting motor. A.C. booster and exciter, 250 volt ^ to gain intimacy products view to joining technical D.C., three-wire, with Transformer. 11,000 volts, 3-phase, sales staff post-war.—Box 6622, c/o The Electrical Review. 50 cycles.—Britannia Manufacturing Co. Ltd.. 22/26, \\T ELL-known firm of electrical manufacturers situated Britannia Walk. London, N.I. 1243 * * in Eire wishes to tie up with a British firm of f\rw /Y kW Turbo-Alternator Set. made by Metro- electrical manufacturers of appliances and component j U U U politan-Vickers in 1920, 3-phase, 50 period. parts, for the purpose of manufacturing their goods in 4001 volts. Steam pressure 200 lbs.: jet condenser. Apply Eire.—Box 1245, c /o The Electrical Review. Patons & Baldwins Ltd.. Halifax, Yorkshire. 1156 AGENCIES ARTICLES WANTED well-known manufacturer of Electrical Appliances CETATE and other thermoplastic scrap: polythene A requires first-class Representatives to cover Scotland. A and P.V.C. in any form: also scrap cable and in­ Lancashire. Yorkshire. South Coast and Midlands. State sulated wire: urgently wanted.—Elton Levy & Co. Ltd.. age. experience and salary required.—Box No. P.123. c/o 18. St. Thomas Street, S .E .l. 30 19-21. Corporation Street, Birmingham, 2. 1232 piOIL Winding Machines wanted for essential work.— GENCIES required for London. South of England, for A Cables. Switchgear. Conduit and Domestic Appliances. Box 63. c/o The Electrical Review. Advertiser has first-class connection among supply under­ NAMELLED Copper Wire wanted. Please state quan­ takings. wholesalers and contractors.—Box 6615. c/o The E tity. make, gauge and price. — Box 61. c/o The Electrical Review. , Electrical Review. A GENCIES required for London. South of England, for TT'NGINEERING Technical Books (new or secondhand) -cw. the following: (1) Domestic electrical appliances: wanted in any quantity. Attractive cash offers. Call (2) Brass electrical accessories, switch plugs, e tc .; (3) Con­ —Third floor. 356, Oxford Street, W.l. or *’Stoneleigh. duit. Advertisers have clientele with every wholesaler in St George’s Avenue, Weybridge. 6- the territory mentioned. Immediate turnover can be \I7 A N T E D . Petrol and Crude Oil Engines, all sizes, also guaranteed. Either commission or buying basis. Post­ * v combined Generating Sets. A.C. and D.C.—Fyfe. war arrangements considered.—Box 64, c/o The Elec­ Wilson & Co. Ltd.. Bishop’s Stortford. 123/ trical Review. . \XT ANTED. Rotary Converters, any size.—Universal. GENCIES required. South of England, including the A London area: (a) Cables: (b) Small Switchgear: (c) ▼▼ 221. City Road. London. E.C.l. 22 Transformers: or any lines suitable for distribution for TTlTELL-established wholesale factors require supplies of wholesalers’ business.—Box 40. c/o The Electrical Review. »▼ Electrical Accessories. Accumulators. Fittings. TT'IRE. Agency firm open to represent manufacturers Bakelite Goods and any line suitable for electrical, motor on sole selling rights, immediate or post-war. Pro­ and cycle and wireless trade. Cash payments. Only gressive organisation established. Replies to—Box 1148. regular suppliers considered.—Mackavoy & Franks Ltd.. c/o The Electrical Review. 374. Kensington High Street. W.14. Western 0121. 1246 XPORT Trade. British firm about to open branch in E Paris is anxious to contact other manufacturers with WORK WANTED AND OFFERED a view to representing them in France. Further details from—Box 1212. c /o The Electrical Review. 1\TANUFACTURERS' Agents, covering the whole of MOTOR REPAIRS 1>X Great Britain and Colonies, are desirous of contact­ ing manufacturers with a view to sole selling rights (either EWINDING and Repairs. Small Motors and Electric commission or buying), post-war arrangements considered. R Tools rewound and repaired by firm having long —Box 23, c /o The Electrical Review. experience in this work. Guaranteed work and prompt O Manufacturers of Electrical Appliances. A well- service. Large assortment of Motors available from stock. T established connection is available for your post-war SOUTHERN IGNITION CO. LTD., sales in Yorkshire. Advertiser, manufacturers' agent, with personal connection amongst wholesalers, supply 190. THORNTON ROAD. CROYDON. cos etc . would be glad to discuss post-war arrangement. —Box 6625. c/o The Electrical Review. THOrnton H eath 4276-8. 37 BUSINESSES FOR SALE APACITY available for Winding. Armatures. Stators C and Coils Quantities preferred—Kingsland Electric AND W AN TED Service. Havelock Works. 75a. Well Street. London. Kfk LECTRICAL Contracting business wanted in Norwich. E Advertiser wishes to purchase either controlling ^ENTRELESS Grinding Work up to 1" dia. required. interest or completely take over going concern. Replies y j metals and insulating materials /round to close will be treated in strictest confidence.—Box 6611. c/o limits. — Fosters. Ottways Avenue. Ashtead. Surrey The Electrical Review, Telephone 3392, 6600 78 (S upplem ent) E l e c t r ic a l R e v ie w January 12, 1945 MISCELLANEOUS Great Possibilities for T> ATTTTRV Chargers Modernised. Yonr old Charger made TECHNICALLY QUALIFIED ENGINEERS YJxe- new by specialists. Conversion from valve to metal rectification. Send for interesting leaflet “ Q.D.” on this Key Men In War-Time and Afterwards service.—Rnnbaken Electrical Products. Manchester. 1. 45 TYONT Part With Yonr Plans. Produce bine prints fT,HE finest poets and the great majority of poets in -L ' and biack line copies, etc., in yonr own office with­ -A- Great Britain in this war are technical. The same out glass frame, privately and economically. "Arcoflex ” will be the case when the war is over. The vast increase Copiers from 23 shillings. As supplied to H.M. Govern­ in mechanisation now being applied to war purposes will ment.— W. R. Boughton. 53, Kenley Road. Merton. then be suitably utilised in reconstruction, and in trade London. S.W.19. 43 and commerce. Take a recognised Engineering Quali­ "PHOTOGRAPHY. A photograph says more than a fication through home-study with the T.I.G.B.. whose -L thousand words. Realistic photographs for catalogues, Students have gained 35 FIRST PLACES in th e brochures and general reproduction purposes for present A.M.Inst.C.E.. A.M.LE.E.. A.M.LMech.E., A.F.P.Ae.S.. and after-the-war uses. Records made of present work, etc.. examinations. Write to-day for ** The Engineer’s premises, etc.—Miles & Kaye Ltd., Industrial Photo­ Guide to Success.' ’ containing the world's widest choice graphers. 100. Southampton Row. London. W.C.l. Tele­ of engineering Courses—over 200—covering all branches: phone, HOLbom 0858. Established over 50 years. 1184 Electrical. Aeronautical, Mechanical. Wireless, etc.

THE TECHNOLOGICAL INSTITUTE OF EDUCATIONAL NOTICES GT. BRITAIN, 35. Tanple Bar House. London. E.C.4. 77 LATEST A.H.I.E.E. RESULTS

the recent Examinations held by the Institution of P Electrical Engineers 477 Candidates sat who had taken B.I.E.T. courses. Of these 457 were successful in passing the examinations. We believe this record of 457 RELAYS successes out of 477 entrants has never before been approached by any oral or correspondence tutorial organisation, and indicates the very high efficiency of A.C. or D.C. Single & Multi Pole. the modern system of Technical Training which we have laid down. I — 1 0 0 A M P S The B.I.E.T. tutorial organisation is waiting to assist Instantaneous & Delayed you eitha- with a short specialist course or complete training for a recognised examination. We have available a large full-time staff of instructors, i H E N D R E Y Manufacturers of while the efficiency of our extorsive organisation is a all Types to byword among engineers RELAYS Ltd. Customers requirements. WE GUARANTEE—“ NO PASS—NO FEE ” BOURNE END. Bucks. May we send a copy of " ENGINEERING OPPOR­ TUNITIES ” ? Containing a great deal of useful advice and detailed information on ova- 200 Horne-Study Courses and examinations, this handbook is of very real value to ELECTRICAL REVIEW'S- the ambitious engineer. Our highly informative handbook will be sent FREE INSTRUCTION CHART and without obligation on request. F O R DEALING WITH APPARENT BRITISH INSTITUTE OF ENGINEERING D E A T H FROM ELECTRIC TECHNOLOGY. Established 1927—over 200.000 students. SHOCK In accordance with H O ELECTRICITY REGULATION 29 12, Shakespeare House. 17, I I & 19, Stratlord Place, Oxford Street, London, W .l. 33 ELECTRICAL REVIEW « »»¿-¿f The TEMCO SWITCH COMPLIES FULLY WITH B.S. MINIMUM REQUIREMENTS (B.S.816-1938) Surface, Semi-recessed and Flush types OUTSTANDING VALUE

M a rk e ted fa y : T.M.C.-HARWELL (SALES) LTD. Telepnone : Tem ple Bar 0055 (3 lines) BRITANNIA HOUSE, 233 SHAFTESBURY AVENUE Telegrams : “ Arwelidlte, Westcenc, London " LONDON, W.C.2 January 12, 1945 E l e c t r ic a l R e v ie w (Supplement) 79

SMALLER MAGNETS '”f~ % AND SAME OUTPUT M . V — ------^ - S m e a n s a c c u r a c y OH

SIZE AS BEFORE • BUT GREATER ^ OUTPUT * TICONAL ’ GIVES YOU A

600D ANSWER — EITHER WAY The SO-rsnge Model 7 Universal AvoMeter. Because Ticonal permanent magnet* , r u »f *A nuUion.-have nearly ,h r„S £ ? ,h . 2 £ £ prfvio™* •reliable from the best commercial magneto? app?ra.uV The AvoMeter is one of a useful range of « Avo ” using these super magnets can be made appreoiablvVhtcr electrical testing instruments which are main­ and *“ fl>er .»nd still maintain the same efficiency. Alterna- taining on active service and in industry the twdy the ongmal stae can be retained, which gives consider- . V ° efficiency.^ Ticonal ■ magnets are anisotropic. "A vo” reputation for an unexcelled standard ,e'V “ ey P^e^a greatly increased properties a!on«r th,* of accuracy and dependability—in fact, a Misotronic^X15* Mu^ard ‘ T»«30*1*! ’ niagnets were the'first standard by which other instruments are judged. r S r ™ ' m l?n' U COram" Cial1' available Orders can now only be accepted which bear a Government Con­ tract Number and Priority Rating. Sole Proprietors and Manufacturers: AUTOMATIC COIL W INDER & ELECTRICAL EQ U IPM EN T CO. LTD..Winder House. Douglas MCLLARD ariRKLRüS SKRVTCB CO. LTD .. CKJTTTTR T HOUSE, Street, London, S.W .I. Phone : Victoria 3404-8 A FT K A arK T AVEHUB. I-OSTDOB. T . a ' J ,2 b )

SOLDERGUN WITH PUSH BUTTON WATTAGE CONTROL

ROCKMAN ENGINEERING CO. LTD. Press Button to increase heat 100% 16-18 Russel] St., Manchester5, Printed particulars on request

SPOTLIGHTS - FLOODLIGHTS - DIMMERS STAGE BATTENS AND FOOTLIGHTS THEATRE AND CINEMA EQUIPMENT SPECIAL DISCOUNTS TO TRADE

D. WALTER & CO. LTD. Actual Manufacturers 61-63 LANT STREET, LONDON, S.E.I TELEPHONE: HOP 3651 January 12, 1945 80 (Supplem ent) E l e c t r ic a l R e v ie w l C O H U t m - —

CORK & __ RUBB'ER E RIALS

for JOINTINGS, PACKINGS, MOULDINGS, as used in ETC. Electrical and other Power Installations, as well as a hundred-and-one other situations calling for a specialised material that is light, strong, resilient, tough and durable according to present-day scientific standards. Supplied in sheets, gaskets and mouldings. Write for samples and particulars KAUTEX (PLASTICS) LTD. High break-down strength, low loss factor DEPT. R and small dimensions. Full details on request. ELSTREE W AY, ELSTREE, HERTS UNITED INSULATOR Co. Ltd., 12-22, Laystall St., E.C.1 Phone : ELStree 1777/8 Tel: Terminus 7383 (5 lints) Grams: Calami, Smith, London THE PIONEERS OF LOW-LO SS CERAMICS

The FLASH “ H” CONNECTOR T l . 1 a c t W O R D in Cable Connecting. .0 Live Lines WITHOUT DANCER.

Connection m.de in . Hieh rupturing capacity fuse at tapping point N o jo in ts t o t sofdered Re-fused in one minute Made to accom­ modate six sizes of cable. Fitted with 5, 10 or IS amps. H.R. Fuse. 30-amp. size also made. RICH & PATTISON 81 JAMAICA ROW, BIRMINGHAM 5. Tel. : Midland 01S3-4-S January 12, 1945 E l e c t r ic a l R e v ie w (Supplement) 81

E1ECTRICAI PRODUCIS

A t) c r i t miss the Bus / ß e in the Van /

/T~) N e t t l e ? B. A. and B. S. F. NUTS, BOLTS and SCREWS FOR DEVELOPMENTS IN STUDDING and ALL POST-WAR ELECTRICAL * THREAD STUDS ACCESSORIES. GET YOUR LARGE STOCKS — PROMPT DELIVERIES NAME ON OUR MAILING LIST TELCO L T D . omat/c ■ W W 1 Machine Tools 41 GORDON SQ„ LONDON, W.C.I' VICTOR H. IDDON LTD. Telephone : Euston 1467/8 Wythenshawe, Manchester ® 9 3 - l5 Telephone : W Y T 2291 and 2292

£AC H COM Pl£T€ For permanent HgM ¡ turn button. LITHOLITE INSULATORS & ST. A L B A N S MOULDINGS LTD WATFORD General Lighting Equipment Co. Ltd. TORCH CASE MANUFACTURERS 'PHONE : WATFORD 4494 11 Singer Street Chambers, Singer Street. London, E.C.2 Telephone : CLERKENWELL 7744/5 Ja n uary 12, 1945 8 2 (Supplement) E l e c t r ic a l R e v ie w PAGE Elcordia Ltd ...... 2? Index to Advertisers Electric Construction Co. Ltd ...... 23 PAGE Electric Depot Ltd ...... Acru Electric Tool Mfg. Co. Ltd ...... 52 Electric Elements Co ...... 58 Allen, Edgar, & Co. Ltd ...... 65 Ellison, George, Ltd ...... - ■ • .. Alton Battery Co. Ltd...... 5 Enfield Rolling Mills Ltd ...... ero i Asea Electric Ltd ...... Engines & Electrics Ltd ...... y6 Ashley Accessories Ltd ...... English Electric Co. Ltd ...... *5 E rm a L td ...... 68 Associated Pumps Ltd • - • - - ...... • • ■ • ■ • Automatic Coil Winder & Elecl. Equipment Co. Ltd. 79 Erskine, Heap & Co. Ltd ...... 29 Everett Edgcumbe & Co. Ltd ...... 46 Barber & Colman Ltd ...... Barlow-Whitney Ltd ...... *2 Ferguson, Pailin Ltd ...... 41 Benjamin Electric Ltd ...... j F erran ti L td ...... Fine Wires Ltd ...... °5 Berger, Lewis, & Sons Ltd ...... ~7. Foster Transformers & Switchgear Ltd ...... 21 Braithwaite & Co. Engineers Ltd Cover m Fractional H.P. Motors Ltd ...... 68 British Central Electrical Co. Ltd ...... 71 General Cable Manufacturing Co. Ltd ...... 43 British Insulated Cables Ltd ...... General Electric Co. Ltd ...... C over i & 69 British Klockner Switchgear Ltd ...... ob General Lighting Equipment Co. Ltd ...... 81 British Trane Co. Ltd ...... 59 Brush Electrical Engineering Co. Ltd ...... 25 Gent & Co. Ltd - ■ ■ 53 Glenfield & Kennedy Ltd ...... C over iv Burco L td ...... Gordon & Gotch Ltd ...... 64 Bushing Co. Ltd ...... 62 Cable Makers’ Association...... 2b Gowshall Ltd ...... :i-...... 67 Canning, W., & Co. Ltd ...... ¿6 G relco L td ...... 56 Carter, H. W., & James Ltd ...... °2 Grey & Marten Ltd ...... ®2 Chamberlain & Hookham Ltd...... *...... 22 Griffiths Bros. & Co. London Ltd ...... 63 Hackbridge Electric Construction Co. Ltd ...... 34 Churchouse, C. M., Ltd ...... 52 City E lectrical C o ...... °4 Halsey’s Electric Co. Ltd ...... 67 Cohen, George, Sons & Co. Ltd ...... Harboro’ Rubber Co. Ltd ...... 62 Cox-Walkers Ltd ...... 68 Hart Accumulator Co. Ltd ...... 50 Crabtree, J. A., & Co. Ltd ...... *5 Hassett & Harper Ltd ...... 67 Heatrae Ltd...... * Cressall Manufacturing Co. Ltd ...... ct Crompton Parkinson Ltd ...... 2, 39 & 5 / H edin L td ...... 52 Heenan & Froude Ltd ...... 4 Cryselco Ltd ...... Dalyte Electrical Co. Ltd ...... 52 Hendrey Relays Ltd • - - - - - ...... Davis & Timmins Ltd ...... °6 Henley’s, W. T., Telegraph Works Co. Ltd ...... 70 Desoutter Bros. Ltd ...... 53 Hewittic Electric Co. Ltd ...... 56 Dixon Hawkesworth Ltd ...... 54 Hildick & Hildick ...... 52 Donovan Electrical Co. Ltd ...... - • ■ • 5b Horstmann Gear Co. Ltd ...... 68 Dowsing Co. (Electrical Manufacturers) Ltd Cover m Iddon, Victor H., Ltd ...... Duratube & Wire Ltd ...... 59 (Continued on page 84) Earle Bourne & Co. Ltd ...... 62 GREY^MARTENltd Manufacturers FoV For all Electrical Work. To British G WIRE Standard or any other specifications. WIRE With a reputation for purity of consti- GRIDS GUARDS tuents and excellence of appearance. * HANDLES LONDON: RACKS SOUTHWARK BRIDGE S.E.l £ ) FRAM FS ^ BASKETS Phone : Hop 0414 Grams : Amalgam, Boroh BIRMINGHAM: BALSALL HEATH WIREWOR K S E Phone : 11 JAMES STREET 3 'D • w Ä ’ -i-nm- BIRMINGHAM 12 calthorpe 1733 Phone : B’ham Cent. 6006 Grams : Amalgam, B’ham

------

r FOR ’B-W’%$TOVENS mains « S T i f l a | WITH AUTO-CONTROL OR Industrial Ovens designed by specialists. Several standard ’’ l o w " t M sizes and specials to require­ m e n ts . Ask for leaflet O V'ER v 0 l t a g ! B H | A ls o “ B-W ” Solder Pots & Irons “ B-W ” Wax Dipping Tanks ‘‘B-W " Impregnating Tanks U e tc . , e tc .

JHDUSTHlA^OCA^UGHTlll^^Mn^ I b a r l o w -w h i t n e y l t d

COOMBS R ? H6ASDEN LANE.IOMDON.N.W.IO c^ o n sh m ELECTRIC DEPOT LTD., 11 4 'PRITCHETT *T„ B'HAM January 12, 1945 E l e c t r ic a l R e v ie w (Supplement) 83

POST-WAR PLAUSIBILITIES

is,..rM -hine! o u r i s *

the P "st-War Generating Sets, Motors, Switchgear, Trans­ d tne1 - DS . imat n at one formers, Diesel Engines, Boilers, Pumps, .Air Compressors, Cranes, Eocomotives, at from ¿^a-o n -T W ^ ' Power Presses and Sheet Metal Working Machinery, Track, and Wagons, Tanks, Steel Sections, Tubes and Fittings, and 'ifiess tVian 6;en«ime f t’s hdd'e-£ * virtually every kind of modern Secondhand Works’ Equipment.

n cl rontrapu° i „aper- t we open a p P THE LARGEST STOCKS IN THE COUNTRY FOR ESSENTIAL PURPOSES to lS ^ eshaUCOe prosaic- ONLY. u f o r ootse^5 Remove PTO ¿V iinety GEORGE COHEN SONS AND COMPANY LIMITED ESTABLISHED 1834 WOOD LANE, LONDON, W.12. Tel: Shepherd’s Bush 2070. Grams: Omniplant, Chisk, London and STANNINGLEY, Nr. LEEDS T e l: Pudsey 2241 Grams : Cobom, Leeds AND AT BIRMINGHAM • SHEFFIELD • GLASGOW u*t nr mt NEWCASTLE • MANCHESTER • SOUTHAMPTON GOO BATH ■ BELFAST • SWANSEA • ETC 4 4 1 0 /P. 4. GROUP 84 (Supplem ent) E l e c t r ic a l R e v ie w January 12, 1945 PAGE Index to Advertisers Saxonia Electrical Wire Co. Ltd ...... 60 Scholes, George H.; & Co. Ltd ...... 53 (Continued from page 82) p a g e Scott, A. C., & Co. Ltd ...... 55 Imperial Chemical Industries Ltd ...... 22 Simmonds Aerocessories Ltd ...... 49 Instanta Electric Ltd ...... 66 Simmonds & Stokes Ltd...... ¿8 Insulators Ltd ...... 17 Sims, F. D., Ltd ...... 54 Johnson & Phillips Ltd ...... 31 Skefko Ball Bearing Co. Ltd ...... 61 Jones, Samuel, & Co. Ltd ...... 54 Sloan Electrical Co. Ltd ...... 64 Jones Stroud & Co. Ltd ...... 66 Sordoviso Switchgear Ltd ...... 55 K autex (Plastics) L td ...... 80 Sparklets Ltd ...... 60 Lanzetter, S ...... 64 Standard Telephones & Cables Ltd ...... 6 Laurence, Scott & Electromotors Ltd ...... 48 Steatite & Porcelain Products Ltd ...... 42 Legg (Industries) Ltd ...... 50 Stirling Boiler Co. Ltd ...... 8 Litholite Insulators & St. Albans Mouldings Ltd 81 Sturtevant Engineering Co. Ltd...... / Londex L td ...... 86 Taylor & Petters Ltd Cover 111 London Electric Firm ...... 56 Telco L td ...... 81 M cClure & W hitfield...... 56 Tenaplas Ltd ...... 40 M.C.L. & Repetition Ltd ...... 1 Thew, Edward H., Ltd ...... 86 Mek-Elek Engineering Ltd ...... 58 T.M.C.-Harwell (Sales) Ltd ...... 78 Metafiltration Co. Ltd ...... 63 Trionite Ltd ...... 58 Metropolitan-Vickers Electrical Co. Ltd ...... 35 T ufnol L td ...... 51 Micanite & Insulators Co. Ltd ...... 10 Tullis Russell & Co. Ltd ...... 14 Mullard Wireless Service Co. Ltd ...... 79 Tyne Truck & Trolley Co. Ltd ...... 56 Mycalex Ltd ...... 65 United Electrical Co. (Coolex) Ltd ...... 40 Parmiter, Hope & Sugden Ltd ...... 85 U nited Insulator Co. L td ...... 80 Partridge Wilson, E., & Co. Ltd ...... 18 Vent-Axia Ltd ...... ■ 36 Pitman, Sir Isaac, & Sons Ltd ...... 58 Veritys Ltd 19 & 47 Poles L td ...... 71 Viscose Development Co. Ltd ...... 12 Premier Electric Heaters Ltd ...... 37 Walter, D., & Co. Ltd ...... 79 P ultra L td ...... 38 Ward & Goldstone Ltd ...... 51 Pye L td ...... 62 West Insulating Co. Ltd Cover m Pyrene Co. Ltd ...... 20 Westminster Engineering Co. Ltd ...... \ Ray Engineering Co. Ltd ...... 71 Winn & Coales Ltd ...... 64 Record Electrical Co. Ltd ...... 60 Woden Transformer Co. Ltd ...... 66 Redfern Stevens Ltd ...... 80 Yarrow & Co. Ltd ...... 45 Rediffusion Ltd ...... 28 Zenith Electric Co. Ltd ...... 84 Rhodes, Brydon & Youatt Ltd ...... 60 Rich & Pattison ...... 80 Rockman Engineering Co. Ltd ...... 79 The fact that goods made of raw materials In short Ross Courtney & Co. Ltd ...... 1 supply owing to war conditions are advertised In this Ruberoid Co. Ltd ...... 58 Journal should not be taken as an Indication that Runbaken Electrical Products...... 84 they are nncessarlly available for export Santon L td ...... 54

BATTERY CHARGERS REGISTERED ZEHJIH ■ I V TRADE-MARK m i trick le chargers Trouble-free Chargers fitted HM inM 1WHUB with selenium all-metal rectifi­ cation. Thirty years’ experience behind every Runbaken pro­ duct. A few Agencies available. 3-PH A SE Booklet Q.5, giving useful informa­ 600 V A tion and describing 12 Models, on request m u m m Im A-CHISTEP«ESTER » P B P

Particulars on request The ZENITH ELECTRIC CO. Ltd. Sole Makers of the well-known “ Zenith ” Electrical [Products Zenith Works, Villiers Road, Willesden Green, London, N.W.2 Phone : Grams : EMERALD STREET. LONDON, W . C. L TELEPHONE HÓLBORN 9722. W ILIesden 4087-8-9______w Voltaohm , Phone. London ” Ja w c . 12, 1945 E l e c t r ic a l R x m e w (Supplement) 85

SWITCH AND FUSEGEAR

Designed to suit all situations

and ,nc°rpo rating Aerofiex high breaking capacity, re- wirable cartridge fuses

Parmiter, Hope & Sugden Ltd. Fluvent Electrical Works Longsight. Manchester 12

FINE WIRES 86 (Supplement) E l e c t r ic a l R e v ie w January 12, 1945 OaTi M STUDDING • We are now able to supply Brass or Steel Studding from stock In the following sizes : 0— 8 B A j"—}" W hitworth

Supplied in 12 inch lengths in gross bundles. Special lengths supplied to o rd e r. •

We a re manufacturers of Screws. Small Turned »AVIS & TIMMINS L- Parts and Inserts. Head Office: B IL LE T ROAD • W A L T H A M S T O W • LO ND O N ■ E .I7 Enquiries invited. Telephone: Larkswood 2244 and 4441

I f f ANUFACTURERS would like -1YM. to meet Engineer Designers of

Enquiries are invited by the F.H.P. motors suitable for small Empire’s largest general engravers for— Domestic Electric Appliances with a ENGRAVED BRASS, CAST BRASS AND ALUMINIUM, ENAMELLED BRONZE AND CHEMICALLY view to consultation and co-oper­ ENGRAVED PLATES of all types in all languages ation in preparation of post-war

Samples and quotations for large or small quantities prototypes. upon request. Phone or write. B O X N O . 1060 EDWARD H.THEW LT! - II.DEAM STREET NEWCASTLE-ON-TYNE c/o ELECTRICAL REVIEW

25 AMP. TRIPLE-POLE REMOTE CONTROL O F S T R E E T ON-OFF SWITCH LIGHTING

n v / ri

Other Products: HBAfTfRY, 1—^ AUTOMATIC FLUSH S T A R T E R S This simple arrange­ m ent in w id e use M O U N T IN G LIMIT SWITCHES CONTACTORS Ask for leaflet TYPE PE263B OVERLOADS 104/ER British Klockner Switchgear Ltd. LONDEX • LTD Chertsey, Surrey. Phone : Chart«» 8821/8. MANUFACTURERS OF RELAYS 20TANERLEY ROAD- L0ND0N S E-20 * ^ 5 S 8 ?2 i* .c

P rin te d in G re a t B rita in a t THE CHAPEL RIVER PRESS, A ndover, H a n ts, a n d pub lish ed b y ELECTRICAL R e v ie w , L im it e d , at Dorset House, Stamford Street, London, S.E.l. January 12, 1945 E l e c t r ic a l R e v ie w 111

MICA AND MICANITE BRAITHWAITE INSULATORS Pressed Steel Precision Gauged and Stamped T a n k s Condenser Plates BRAITHWAITE & CO. ENGINEERS, LTD. London Office ( Temporary Address) : Radio Valve Spacers, etc. 45 King'« House, Haymarket, London, S.W. I TAYLOR & PETTERS LTD. 3-11 WESTLAND PLACE N.l Telephone: W H I 3993 Telegrams: Bromklrk-Pnone Insulation Engineers Tel. : Clerk. 4105

ECTRICAL

APPLIANCE

T h r o u g h o u t the years of peace and war Dowsings have pur­ sued a progressive policy in the manufacture of all types of elec­ trical appliances.

This policy has brought us customers in industry as well as domestic traders, and we look forward to serving them all with even more interesting equipment in the future.

ELECTRICAL \ I KANGLEY BRIDGE ROAD DOW SING CO.( MANUFACTURERS/ B LOWER SYDENHAM,S.E.26

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 Westoflex covered. RESISTANCE W IR E S . LIT Z W IR E S. MICA, M ICAN ITE 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 iv January 12, 1945 j & H W GLENFIELD SLUICES FOR CIRCULATING WATER INTAKES

Any interruption of circulating water supply may entail the closing down of a whole power plant until a remedy has been applied, and it is therefore important to ensure that the regulat­ ing sluices are designed and constructed to give constant and reliable control of supplies in all conditions of service. In the course of nearly a century of specialised experience in the design and construction of water control appliances, we have successfully over­ come many difficult problems, and have been responsible for the design and construction of the control sluices for some of the largest and most important installations in the world. Our experience is at the service of engineers, and we are always ready to co-operate with them in the solution of any problems which they may encounter. We illustrate a group of interesting Electrically Operated Culvert Pen­ stocks recently made by us for a large pumping station in connection with an importantCatchmentBoard Installation. Six of these valves (which are 5 feet square) are fitted in concrete bypass culverts to the large axial flow pumps and allow flood water to gravitate through the station at low tide. The penstocks are electrically operated and fitted with limit switches which allow fractional opening of the door at the limits of travel. Provision is also made for emergency operation by hand. A Glenfield Patent Safety Electrical Interlocking Device is fitted to prevent any possibility of hand gear being used while the motor is in circuit.