1948-07-08 — Page 8

· THE CHINA : MAIL, THURSDAY, JULY: 8,-1940,

VIBER

INTERNAL CONCRETE VIBRATORS With Interchangeable Vibrátor-Uniti.

ELECTRIC

PNEUMATIC OR

GASOLINE MOTORS

\\MAKERS: VIBER & CO., 720, So Flower St. Burbank, Cal

YU TUNG tai limiteD

EXCLUSIVE

ENGINEERING DEPT.

AGENTS

TEL. 33145.

BRC

FABRIC

ELECTRICALLY CROSS-WELDED STEEL WIRE, MESH

IN ROLLS OR SHEETS

"FOR-CONCRETE REINFORCEMENT

Stock Available

"

DAVIE, BOAG & CO., LTD.

Chartered Bank Bldg.

Tel. 23117

Agents for BRITISH REINFORCED CONCRETE ENG. CO.LTD.

Because the Decola Is. the world's first 、 "record: reproducer having a “response"

range of thirty to fourteen thousand cycles per second, it is the first and only instrument to bring to the home the memorable momenta of music exactly as they were performed in the contert hall

Decola

living-music

ENGINEERING PAGE

MODERN LIGHT SENSITIVE CONTROL EQUIPMENT

Each mast has been atted with suitable cradle to accommodate the special 14-ft.' diameter par

the aboloid aerial system, and cradles are raised arid lowerpu

Investigate variations in re- mal strength at · dif- signa absence heights.

Although the general principles would operate for a period of 30, don' to Birmingham Television of the

photo-icctric cell

seconds. Although the train may Radio-Relay Link, which the have been well known to acion- remain. In a, position where it in- Gericral Electric Co., Ltd. of lists for many years; It is only terrupts the beam, the red England is designing and supply quite-recently that its vast pos- only operates after the Klaxon Ing to the Brillian Post Once, is sibilities as a means of-control-_horn has ceased sounding.. The being carried out. ling industrial operations have

Temporary combined relays automatically

masts, have been

realised.

reset, themadives after the train erected on the sites selected for ferent has been withdrawn.

intermediate stations and pro-multipath signals is also being Aa extensive series of geld pagation tests are being conduct-confirmed by these trials, while trials over the. route of the Lon-ed between them.

cell

The action of the photo is, briefly, that when light - falis on the cathode, electrons flow from It, and are attracied to the anode, the action corresponding to that which takes place in a

а

two electrode wireless valve. The current thus generated can be used to control a three electrode valve, which operates a relay, and this in turn can, be employed to inaugurate control operations of a most diversified character.

and

Moving objects on a conveyor bell cat very easily be arranged to Interrupt a boum of light, to that a whole field of unes for photo cell equipment lies in pa- per-making

printing, in packaging, battling, sorting, and counting operations. It is sull- able for

n variety of protective devices,

ces, and can also readily be used as a check on turbidity. colour, purity, and other quali ties of importance in chemical and food pro

work, The

approach of traffic, the level of material in a a storage bin, the position of an indicator needle, all such may be used to operate

photocell to useful

purpose.

A

Without If neither television' nor sound Alma would be possible as we know them today.

Measuring Fabric

An application which has caused interest In the British Hostery Industry is, an installa- tion recently carried out by the General Electṛle Company of England. for Wolsey's, and is an example of how simple electronie: control gear can be successfully Incorporated with existing ma- chinery.

Equipment was required to ensure the true measurement sof the amount of fabric passing over steam-heated rollers. With the original measuring (or coun- ter) apparatus, employing a triction drive, inaccurate figures were being produced. due to

pressure on the friction drive,

The new installation retains the counter system, but introduces a small lamp projector, photocall extension unit and amplßer-all G.E.C. standard producta:

been cover.

The pithead gear of the new shaft at Moseley Common Colliery, Boothstown: Lancashire, la constructed in clean white, concrete. In addition, the National Coal Board is to build the biggest washery in Britain, which will clean 800 tons of cost" an hour, Part of it, will be operating by next year. The new shaft is, ahown in this picture, a completa contrast to the old type of coalmine shaft with its pithead wheel.

Gas Turbines

In Aircraft

Electronic Accounting

An electronic · · michike which' may start a revolution-in-accoun- tancy methods la being developed

by a London fin.

Bludies of the signal, strength stablilty

and interierenico-leval

at the various sites are being investigated.

Signal Generators

Two, mobille laboratories each equipped with CW. and pulse transmitters for the appropriate frequency range, together with receivers, display systems and re- corders, complete the equipment. This laboratories also contain [signal. generators, frequency meters and low and high power RF wattmeters, while each unit has its own mobile 240-volt A.C.

11 $0 C/, power supply. An teresting feature of the system is that contact between the two mobile laboratories is maintain- decimatre-wave com- ed by munications transmitters and re-

ceivers.

These trials are of particular importance in view of the pre- Bent world-wide Interest in radio-relay links, not only for for television purposes, but also such application's ne

multi-chan-

nel telephony. Such radio links would be of extreme value in

countries where the terrain: E

ERVICE

BENGLISH

ELECTRIC

FOR EVERY INDUSTRIAL DRIVE

THE JARDINE ENGINEERING M

CORPORATION

14-16 PEDDER STREET, HONG KONG. TELEPHONE 303il.

The SINCERE Co Ltd

dimeulf and the laying of cables HONGKONG'S GR

virtually impossible. The 1- formation now being obtained will also be of special impor tance in the design, of trük radio systems for export to such countries.

('The establishment of this pioneer development in Britain should show a long term beneft) in this country's efforts to satisfy the communication noods of the export market,

Automatic Control On

Electricity

This machine will store' figures in the form of patterns of alec trons and add them simultane British engineers have achieved ously. It will, of course, nish be and

There are several „dovičes now. another notable advance in the able to subtract, multiply

ન the British market, by design and construction, of gas divide. turbines in aircraft. -

The well-known-office machin- means of which household elec- responsible tricity demand can be control- It was announced at the Min-ery makers who are

and Britain's Electrical is no fabric to interrupt it, a istry, of Supply's press confer for the new machine regard it led,

Association is in- beam of light, falls on the photo-ence during-the-week-end that as the basic principle on which Development

number these.. One system, cell, and the relay in the am- the Bristol Theseus gas tur- they are working to speed up Vestigating the sultability of

While cloth is passing over the rollers, the yardage count pro ceeds normally, but, when there

recording takes place.

Relay System

series

on

by

plifier operates to cut out the bine engine, driving, a propeller accountancy methods. with the which is in uso at Hazel Grove counter trip switch so that no or turbo propeller, has passed a in un Interview

of severe tests with a Financial Times, the President and Brambali, Cheshire,. In the outh high-frequency A guard is provided to

Agure of merit superior to those of the Company stated: "What North of England. operates

I envisago is something like this. sending provent, the photocell being. ob- of any known comparable.plston At the headquarters of an, or wave over the existing systein scured by any means other than angine.

instan- By means of relays this wave which can be recorded Britain's lead in plain jet and anisation will be a panel on when the load reaches its peak. the presence of fabric passing through the machine. In addition turbo jet is acknowledged all taneously the effect on the Com-car shut off water heaters and a

the world. This new work pany's financial position of the other equipment and 'so reduce pilot lamp has been Atted over with which

the turbo propeller is as re-latest transaction of its remotest the load. The system is similar by can be readily seen

themarkable. The Theseus has been agent. When this is brought to to that which is used for switch- the foreman to lodicate

and qft. street lamps. subjected to both air and ground the commercial stage it will be ing

methods, of load contro! Counting impulses.

and is the first * tests

hortening really abreast of its affairs could be operated in individual

inpossible for a company to keep Other the world to pass

electronic machines Houses, southut the total load In order to show how little Britain's

a pre-detër. maintenance is required and the will, in fact, be able to diposo does not exceed

amount and differential Another application, .. for high degree of reliability to be of the time lag in the making up mined Messrs. J.D. Crozier and Part-expected, the Ministry of Supply of a balance sheet and thus charges could be introduced to ensure that the latter fulfils its elecurage econtimy. For exam Edinburgh, required instituted bench tests in which function: of giving an up-to-date ple, a householder, could have means whereby En indication

tion engines of this type should accurate picture of the state his load Umited to four kilo

th, with

watis, As soon as that load cóuld be given to trala, driver run 280-hours,“ il possible,

of a' company's business. that the trucks coupled to the out overhaul, as possible to those Aachine_Company).

conditions

(The firm is, Burroughs. Adding was exceeded, the: less essential. [Itams of equipment, such as engine_bad_entered_a_vital_por=|being ʼns near as

water heater and fires-would- tion of a loading and discharg in operation. In civil, aircraft.

be automatically switched off, ing aiding.

The first engine to take the tost was the Bristol

дога test at hours test. Up to last Friday K a larger load than four kilar ot 2,000 horsepower and afternoon it had run 280 hours watts were wanted, the house- |terruption of a light beam,.. a

could have his consump warning signal in form of a red carried out in 17 ruins of 10 is 250 hours run the engine rate,

tion, limited to six kilowatts; signal lamp and a Klaxon horn

made. 13,000,000 revolutions: Beach and 16 of five houth The Theseus has, meanwhile, and the tariffs so adjusted that:|

After this 'severe' test' was found that the Theseus was been used successfully in the air the user of small quantities of

electricity - would get it at still, in perfect condition and by the RAE. in two-Avro Lil much cheaper rate than the con that it did not need Overhaul. It coin bombers on the Cairo-Eng-sumer who needs a heavy load..

to carry land flight.

ners,

Photo-electric cell equipment

♥

I was arranged so that on the thrust. The test was still 'without any fault: - During holder. by paying at a higher

the 250 herous. It | straights on with the second 280 leaving the cooker, still working.

MOUTRIE & CO. (H.K.) LTD.

Was

, then

decided

UNSINKABLE

LIFEBOAT

New Process For Rubber

The new process for applying rubberto, textile bres has A new ship's lifeboat of unor launched roma ship in mid aroused so much interest In

har Atlantic, proceeding under. thodox desgin is being completed dwn power for 1:500 milles to New Britain 'that by, the grid of laxt year hundreds of Arms had re- at Friar's Boatyard, King's Lyn York The boat will be powered ceived samples for trial. Re- Norfolk, England. Instead at the by two 20. h.p. Coventry Diesel search into the process · con- standerd hill contruction, the mxines. Non-return valves

in the laboratories of the bottom of the new lifeboat is holder the boat will secure the

Rubber Development low and almost identical in-res speedy emptying of any water Board verse wild the above-water, bore shipped.

un

Progress with the now pro-

Hon, so.1

b. that whichever w why the Another virtually · unsinkable cess

recorded by the Chairman of buat lands in the water, he is lifeboat is being manufactured by C, known as "Foiltex", war randy for we. In the past many Tamport and Holt Line, Limited, the Board, Mr. Egmont Hake, in Ik bera heen Lost invids 10 Gracechurch Street, London, the annual report just publlah- lifeboats capsizing when lowered Sugg The diagn embodies, orightal

featur planned from winking" ships, Tole in the

10 minimise the reason why the ordinary open | cónsöquchtör For faulty

completed" and i Bris Indicate the use they may be,

bost is unsulted for life-saving in | tomtörd, greater s pror 10 able to make of the process utá

The tormy son and numerous con- itabost occupants,; to give greater is too early to say whak

warmth, to allow greatly increase in the consumption of na- elenaed, supply of driplingwater turni rubbery can be aprited. to runder. the bosi well-right: The Board, is also working triale, the dog from, an ankle, of inclination Improve the market for nat

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