1948-01-08 — Page 8

THE CHINA MAIL, THURSDAY, JANUARY 8, 1948.

or your new Transformer

Specify

Ferranti

GILMAN & COMPANY LTD.

ENGINEERING DEPARTMENT

Telephone

Chubb & Sons

31146

Lock & Safe Co., Ltd.

Available ex stack as illustrated.

-

Sole Agents:

THE JARDINE ENGINEERING

CORPORATION LTD.

14-16 PEDDER STREET, HONG KONG.

Telephone 30311

ENGINEERING PAGE

SEEN AT OLYMPIA

Water-marie-preventer flushing cisterns in moulding plastic were on view during the Building Exhibi- tion at Olympia. The new cisterns are reported to be silent, efficient, reliable and durable. The syphoni and fittings are designed on sound engineering principles with all bearing surfaces accurately machined and discharge ir practically, inaudible. The syphon bodies, are of non-corroding antimonial lead ollay and the piston rods are of brass. Both low-level and high-level cisterns have a capacity of thrie galions,

Flexible Fuel Tank

Safety and fuel capacity in aircraft have been considerably increased by the development in

Great Britain of a new type of flexible fuel ELECTRICITY let-proof the usual tanks, these fuel cells" GRID TO

DISAPPEAR

tank. Evolved from the war-time need to bul-

(as they are called) provided a high degree of

protection against fire in crash or heavy land-

ings, and allow maximum use of the space available for carrying fuel. Marsion Excelsior Ltd., a sub-manufacturing rights for Great sidiary of Imperial Chemilcai In. Britain and other countries were dustries Ltd., was responsible for acquired by ICI. who had been potentialities of the design of the cell, which is examining the known as the "Marflex" and the the flexible cell fellowing their combined research experience of researches into the bullet-proof no fewer than six I.C.L., Divisions ing of metal tanks. went to the production of suiteble materials for it.

Tungsten Filament Lamp Holds Its Own

The tungsten flament lamp still holds an important place In lighting practice, for there are many tasks which it is not easy, or even possible, to per- form by the use of any other known source." Typical of these applications is the motor 'car hendlamp.

It will be remembered that American, Jamp designers evolv ed the scaled beam lamp in an effort to improve the perform- ance of headlights, Thenc lamps are of two types,

One is an all glass construc- tlon in which the filaments are mounted directly on the reflec- tor, which together with the front glass forma a sealed en velope.

In the second type, a twin flament bulb is soldered Into position in a metal reflector, which is then sealed on to a prismatic front glass. In both casen, the entire unit must be replaced if the filament burns out.

Pre-Focused

To avoid this wholesale scrap- ping while retaining the prin cipal advantages of the

10W

method, a pre-focused bulb has

Domestic Electric WATER HEATERS

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We have much pleasure in announcing our appointment by

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2 Queen's Rd., C.

FOR

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GEORGE LIN & COMPANY

been developed by the G.E.C. in 202 BANK OF EAST ASIA BLDG.

conjunction with J. Lucas & Co., Ltd. In these new lamps,

the

front glass and reflector are as-

TEL 24408-22853

sembled as a unit which cannot TEA, BAMBOO, CAMPHOR, STRAW HATS, be separated.

The bulb has a notched flange FEATHERS, DERRIS ROOT, SUGAR, CORK,

and thus locks into the correct position when inserted in holder. This maintains the

the CARDBOARD, MOLASSES, PINEAPPLE, SISAL

.OT+

The electricity grid, with its | ¡ginal beam, performance when thousands of pylons and miles off a replacement bulb is fitted so wire, which sometimes endanger that no focusing device is TC- afrerait and disfigure the coun-quired. tryside, may disappear in Britain. British scientists have estab.

Since the bulb is fitted from lished that thousands of separate the rear of the reflector, it is high-frequency radio

that currents essential

the apertura could be made to flow in a copper through which it is inserted In the early days of the war, pipe one and a half inches in should be kept as small as poa- self-sealing was mainly achieved

diameter.

sible. The bulb is therefore The idea of constructing

by loyers of solid natural rubbor

With "repeater" stations every made cylindrical in shape so as fixed to the outer wall of metal 10 miles. It could replace flexible, non-metallic fuel tank goca back to the 1914-1918 war trated on the development of a 132,000 velt grid supply,

tanks. At first. IC.I.

concen-overhead system, carrying the

the to reduce its overall diameter to

a minimum. but nearly twenty years passed

thou- ilghter and more efficient, cellular sands of telephone lines, and the before a suitable material was found. This was "Neoprene (at of sponge rubber, and on a B.B.C. relay circuits, synthetia rubber manufactured by synthetic form of sponge du Ponte in the United States), the natural produci became scorce. In 1840, with the acquisition which was used by the Glenn L.

of the American scaling tanks for amphibious and Martin Co. of Baltumore in the of the rights

cell. Maraton Excelsior armoured vehicles, large capacity development of their "Mareng"Marang" fuel cella tank so constructed began experiments with flexible tanks for motor torpedo that its surrounding supporting fuel tanks of "Neoprene"-coated transport tanks for carrying avia flat topped beam for use when

rall trucks, structure relieved the walla of the the material being made by the different types to meet

fabric shaped on wooden frames, on fuels on

and driving towards traffic, or in a tanks the experimental

of many fog. Twin filament bulbs are cell of all tension,

Leathercloth, Division of I.C.J.

special also being produced for use in "Mareng"

A great deal of research was naval requirements. Land stor- necessary to establish the best age tanks, holding up to 12,500 the near side headlight when a combination of fabric and "Neo-gallons were also made, and some passlight cannot be fitted. The prene". The result

bulb will allow "Neo-Saw service an was

the Normandy pre-focused

In 1840, the sole

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GE.C

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MADE IN ENGLAND BY THE

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MANUFACTURERS OF RELIABLE RADIO

THE BRITISH GENERAL ELECTRIC CO., LTD.

Queen's Buildings- Hong

when

Range

A range of flings of various sizes has been produced, and it

is intended that they shall also

boats, be used as pass lights, giving' a

prene T.F.I.", a material consist beaches in the Invasion opera- much more effective dipping Ing of three piles of fabric and tons of June 1944. When not in than has hitherto been attained two layers of the synthetic rub-use, these tanks could be rolled with twin filament headlamp

up and were easy to transport. bulbs..

"Marilex gave protection against 303" and 5" ammuni. tlon on aircraft, and up to 20 m/m cannon for land vehicles

ber.

"Marflex"

This "Neoprene flexible lank and naval craft. -christened "Morflex" could be bullet-proofed with

-lighter

The material for the "Marflex" cover than metal tanks, and also cell consists of a sandwich with

an intermass Kove greater protection

and facing of nguinat damage, such as might occur in a

"Formivar" Glyceryl Adipate crash.

synthetic resin; calendered on to two-ply cotton fabric. The resin ion spirit and remains flexible is impermeable to petrol or avia.

overà comparatively wide tem- perature range.

in

Production commenced in 1941, and considerable number of the carly "Marflex" fuot cells were used with excellent results Service aircraft, particularly in certain types of "Spitfire. But further development was neces sary. "Neopreno" had cerisin disadvantages for the work and was also in great demand other war purposes,

Tallored

British Steel

Exports

Tune in...

on the world!

From the war years thera emerged amazing examples

of man's conquest of time and distance. Into the British steel exporte to China space of 5 years there had show a drop during the months

cf October and November. The to be crowded the normal reason is that shipment of bridiz-

The material is Tailored" on Ing material has had to be sus- to wooden formers a methodpended during the period of which lends itself to the speedy UNRRA handing over, because

As an alternative experiments production of unusual shapes, the organisation is being wound were made with a synthetic resin. The formers are "po, made that up, known as Formvar manufac they can be completely disman Shipment arrangements. ·wili Lured by the Shawinigan Comted after the tank has been now be made direct between the pany of Canada. The first came built, and withdrawn through a British ghd / Chinese Goverd ples, using single-plyd fabric, hole, made to receive one of the manis, it is expected that the proofed with "Formear/Diacolin, metal,

changeover will be completed by were not altogether, satisfactory,

Botha, garla

of the middle of this month when, of the remaloder

but I.C.I. Techniciada successful development, came apparent the dospatching will be resumed, i

ly overcame these millal difficul that the usual tal-pilings were of the

not satisfactors for the new

ties by employing a multi-ply tank, and this led to the patent reach the tonnage recorded a Shipments will not ngalti (abric," TF-28):

ing of special joint atting and August and September, for there “Formvar”... several other features.

only remains between 1.000 nöd The "Formvar" broofed mates

beardlexa cells, are made to 1,000 tons to complete the allot rial, although quite satiafaztery measure to 'ft÷fodividual-requirement to made by a Britain ** to when new did - not, however, mente and will ea into, places Im- UNHRA" to assist China's recon- withstand the effect of prolonged possible for a wiæld fall. Their struction. It is expected "that service conditions, and lost flex-gainst fire, caused by bursting three months.

Bexibility gives high-protection transportation will take about

bilityFurther research led to

proofed with

| similar -". febria,

tank in crash or heavy landings" "Formvar" - Glyceryl Adipate and the rabad for ervilian Mirératt which combined all the share mainst eraan damare by a lover includes #Toall specially initiated

Problem

According to the British Iron

teristics of Ahe earlier mater of felt, and fabric over the tank and Steel Federation, the steel.

with the advantars of... Longer

service life and stablilty ovezzat

much"_widar température rafa

...: This brought "Martiëx”

afurther stage of developm

and by the end of the war |had been specified for, such famu

mircraft dag? the Vampire, vi

Anduftry Awill have to face tie problem. next year of providing stoel for the', expension of the vietni Suain? | Industries 2 at home for, the manufacture of mach ery fand other #dollars earning

1

progress' of a" 'generation. Aviation * 4. Radio ....: both are great examples.

PHILIPS

Pak Aeromarn

being you - these' ‚10 'Great Radio 'Révanou

1. AUTOMATIO HANDSPREAD 2. SILENTOGË CINQUIT.

(mmes stations, leży modse), 3. THERMO COMPENSATION

`{no pomlag drift).

4. PADGING CORNECTION Į

5. CONDUCTOR SWITCH

(ke your pan, posthacte) CONTRAST EXPRESTON

[reproduces stačia sair)

7. AUTOMATIC OVERLOAD

CONTROL⚫

8. ANTI-MICROPHONSC

CONSTRUCTION:

9. TROPIC FRDÓE.CON.

·STRUCTION

'10. INCLINATOR DÁLE ·

dero

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THE GENER