1947-07-10 — Page 8

METAL WINDOWS

GIBBONS

High class Architectural Fittings

Stocks Available

GILMAN & COMPANY LTD.

Engineering Department

4a Des Voeux Rd. C.

Telephone: 31146

CARTER & SUTTON

AIR CONDITIONING

VENTILATING &

HEATING ENGINEERS

230A, HONGKONG & SHANGHAI BANK BUILDING.

TELEPHONE: 28901

MUREX

WELDING

Institute In Full Activity

netunt. Agures, nccording to the

THE CHINA MAIL, THURSDAY, JULY 10, 1047.

ENGINEERING PAGE

Engineering Society Of Hong Kong Under Discussion

to

awaken public opinion, as cause Government or local in- dustry to act.

Research Work In addition to service

Something New To

Hong Kong

Something new to Hong Kong in the Packard Bell Phonocord which incorporates

The year 1940, the first com plete year since hostilities culei,: saw the resumption of all the

The engineer, like most other activities will, of very necessity,, the society should be able to

10 tube superletrodyne long normal activities of the Institute specialized professional mon, is n of Marine Engineers. As the re-dult, fellow, unless perchance you have to be largely professional in make Intelligent research into and

and short-wave radio, phone- opinions upon sult of the influx of 505 new mem- meet him on his own ground. It nature, however it is to be hoped express valuable

graph and home recordert The that the Roclety will not an important communal service. bers, giving a net increase of 370, is seldom indeed that one and spend all His time in the reading is enough use made of loent sun.

home recording section is very engineers in prominent publie

and Prose, who, by of highly specialised and tech shine for heating water in our local community, the members of song or play na naturally as a to the effective, and reproducos apeceli, the numerical strength of the in.

positions

papers drawn largely from out- domestic hot-water systems; The virtue of their seniority in thu stitute now exceeds 5.000.

the Society might also contribute commercial record. It also, there a case for electrifying the to the general body of engineer permits Properly and imaginatively railway from Kowloon out a the ing knowledge by minking avail- profession, do nttain such post-side the Colony,

programmes pouring Jons seldom appear to the lay- Annual report of the Council for man to be wide in their vision or that those engineering problems and cons for a bridge or tunnel parts of the world the results of cords are priced at a very rea- ay used, the society could see to it border; what really are the pros able to technical bodies in other from the radio to be repro- duced on records. These re- to contribute a great deal to the

which have vital bearing upon between the island and the main research - the present functioning and with the obvious change in to this feality. The engineers of Hong

An example of sonable rate, and might provo future development of the colony.

wage structure in the colony this are no exception, in fact I

receive full and specialist atten- since the war, what mechanis-by

type of service is provided na alternative to sending your perhaps trud to say that they aren Whilst in many cases its can be, or should be. Intro- specin! committe

work carried out by greetings and regards by letter. than their

the En. duced into local industries? All ineering fellow professionals

In ether.

Haclety of China

The Packard Bell Phonocord of these questions and many which, just before the war, was comes in two units the port- more,

awailing intelligent engaged upon investigation research. The work entailed in the provision of suitable founda- Model 1063.

Into able Model 1052 and the Console Much investigations would

atlons for tall buildings In The doubt make demands upon the quasi-liquid

Foll upon

1946, were 5,129 on December 31 fast, against 4,350 on January 1, 1910.

administration of the commum

Eleven technical papers, in actif dhlon to Sir Anios L. Ayre's pre- sidential address, were published

parts,

The

By A Special Correspondent

are

the

upan conditions peculiar

which

Two exclusive, technical feu-

fic

reply of the average In the Institute's Transactions engineer to this accusation more during the year, and the Denny often than not is that his work

of such and training Gold Medal, for the best paper nature as to afford him little time

spare

time of the engineers Shanghal has been built. There tares of the Packard Bell Phon- contributed by a member during to devote to mintters outside his

forming the teams, but such work must be many similar problems ocvrda are the magnetic typo would not be wasted and it woubl awarded to knowledge: the year, has been

that it would be a

upon which the local society recording head and arms, be of inestimable value to the might give valuable information Packard Bell's special three-see- Mr. W. Sampson, the author of better world if a few more people

to the n

community and

and រំព muck 3) to engineers in London or other tion control which is a volume "Notes on Stemm Jet Refrigern did their own Job properly an activities will be limited

our cities. Let us hope that the pro- thought less about their own per-reading of papers contributed by enhance the reputation of

local engineers.

and tone control in que, nnn aggrandisement or political single Individuals. It could pro- provide renity tion for Marine Purposes."

It would also posed Society on

chines into meddling.

vida vahuable training to senior as

dynamic demo-being and that it will provide a which answers the public's de- well as junior members by formerney if the publication of such useful instrument both to the mand for an instrument pro- ing several teams or committees recommendation on any particular community as well as to

theducing a goud baan response at to study and make recommenda-subject be so convincing, and we engineers in particular,

low volume levels,

The Institute Silver Medal for the bent paper contributed by a non number has been awarded to Dr. W. Ker Wilson for his contri..

Conscience Stirring

It

This riposte is an admission of] tions upon specific local t bution, "Oil-Engine Dynamics, weakness for it reflects the type has

that the housing problem

mittee. the

these orders.

་་

there is a move Engineering

Trolley Buses

TA

been said, for with special reference to the Op-of mind which says "tell us what

want done and we will see largely one of shortage of im- posed.Piston Engine."

you that it is done"; not why in it ported materials: is this true and, possible to find The executive committee of the necessary to do it, or what will if so is it not Education Group have taken over be the effect on the lives of other local aubstitute materials, the pro- from the Junior Section Coma-ple around us if we carry out duction of which might well be

the birth of fresh industries arrangement of the There

are however indicatlens the colony? Surely A team of programme of Junior-section fee that the public conscience of our selected engineers and archileet, tures and this has now been ex-local engineering community I would be the best people to answer tended to universities and techn.

stirring and most heartening is such a question, 'cal colleges in provincial centres, the news

that as well as in London. Since Octo-foot to formu ber, 1946, lectures have been held Society of Hong Kong similar to

For Kowloon? at Southampton, Liverpool, Bel the body which has existed for

under There has also been much talk, and many years in Shanghai fast, Sunderland, Swansea

the naine or The Engineering and writing to the press on the Cardiff, and at Poddington, Won!.

The terms of need for a system Society of China.

Trolley wich, Enst Ham. Croydon and the reference of this proposed society Buses in Kowloon; again a team Northampton Polytechnies, and

and the framework of Its within the general framework of King's College, London. Progress towards the attainment of the target of 100,0001. to finance the erection of the Marine Engineers' National War Memorial Building hes been made. On November 10, 1916, a first list of subscripilons was published showing that p total of 41,4101. find been reached. By December 31, this total bad increased to 44,1711, and further progress has been made since the date.

Weather Reports By Radio

into the sky and ELECTRODES

THE JARDINE ENGINEERING CORPORATION

14.16 FEDDER STREET, HONG KONG.

TELEPHONE 30311

CELL-O-CRETE

Light Insulating blocks made in cement for HEAT, COLD and SOUND Insulation for ROOF, WALLS, PARTITIONS, etc.

Insulating and Building Materials.

Factory: Wong Chuk Hang Path,

Aberdeen. (ILK.)

Enquiries: Room 304, Bank of China Bldg.

„Phone 20904.

گرفری

Welding Of Copper And Copper Alloys

these

dised copper sheets and conditions had been found to be due to the presence of inclu- sions in the welded seams.

་

Copper Alloys

At a joint meeting of the In- stitute of Welding and the In- stitue of Metals, held in Lon- den under the chairmanship of Colonel P.G.J. Gueterbock, Except in the case of very C.B.. D.S.O.. M.A.. Presi- thin sheet, copper must be pre- dent of the Institute of Metals, hunted to temperatures of about | a paper extitled "The Welding 500 deg. C., prior to welding of Copper and the Copper-Rich and only when the metal was Alloys" was presented by Dr. liable to oxidation during the Maurice Cook and Mr. Edwin | preheating operation need. #1 Davis, of the Meta's Division, flux be employed. The welds Imperial Chemical Industries, should be of the plain bylt Limited. Wilton, Birmingham. type; llet and other types of Dr. Cook, who read the pa- welds introduced difficulties due per. said at the outset that. It to the high thermal conductivi- An intriente little radlo set contained a review of existing ty of copper. attached to a halloon six feet in knowledge on the welding of diameter, soaring about 12 miles cooper and copper alloys, and descending to also a brief description of in- yarth by parachute. :

vestigations on the welding of The copper alloys, including This is the latest method of copper, deoxidised with silicon such materials as the brasses, obtaining accurate weather re-and other elements, and on the the bronzes and the gilding purts, It

developed by pressure-welding of copper and metals, all had thermal-conduc- seientists of the Meteorological a range of copper alloys. The tivity values well below that of oflee to assist the RAF during authors stated that the assem- copper, and the choice of a pro- the war..

bly of many types of apparatus cess for welding them was thus and vessels by gas welding was much less restricted. The only a particularly well-established technical problem involved in. procedure;

oxy-acetylene the welding of brass was that process, using a neutral flame, of the volatilisation of the zine. was that normally preferred. An oxidising flame should ul- produced by the addition of the it was interesting to note that Phosphorus-deoxidised copper, ways be used for this alloy and

The new instrument girovides deoxidant, usually in the form the presence of even as little the most accurate meteorological of phosphor-copper. had been as 0.005 per cent, of phosphorus rendings yet obtained from the primarily developed as the to a large extent prevented the stratosphere. Britain is now welding grade of copper. The volatilisation the zinc. ahend of any other

development of this technique. in the

country presence of residual phosphorus In a series of experiments, The instrument ia

copper, in quantities silicon bronzes in "Radio Sonde." It Is a polished ranging from 0.05 per cent. to ranging from 1 in, to 1 in. had black cylinder from

1 0,10 per cent., which

improved the been welded successfully by the ject delicate aluminium housings weldability of the metal and carbon-arc process. If due tare in which are sensitive barometer,

eters, prevented the pick-up of oxy-

was

of

Now it has been adopter Tor civil aviation and the Salford Electrical Instruments works The General Electric Co., Ltd, of Enginud have re-designed The instrument for quality productios

the

calier

про

the

thermometers, As it riacs into the gen by the molten metal during air it broadcasts д radio signal welding. which is received As a musical note, varying according to that different conditions

during its ascent.

encounter ca

thicknesses

were given to the preparation of the surfaces, excellent results were obtained when welding tough-pitch copper, tin-bronze, deoxidised copper and 70:30) copper-nickel under pressure, Work In this field indlented that likely to be of increasing inter- the technique developed чудя

Effect of Bismuth -The effect of bismuth in cop The transmission is picked up an 0.003 per cent, could have a per was very marked; as little by a radio receiver on the ground serious deleterious effect on the est to persons engaged in the and the exact value of the note

is determined by using a minia metal, Even 0.0015 per cent. of joining of metals, In some ture television tube as an indica- blamuth could give rise to em- cases, the welded joint was dif ter. These results are plotted and brittlement and cracking at flcult to detect on polished and within a few minutes of the in- temperatures between 400 deg. etched sections, even when ex- strument's ascent Into the und 700 deg. C. Selenium and amined under, the microscope, atrosphere having been completed, tellurium occurred in various results are sent by teleprinter to copper ores and found their

Dunstable.

the Central Forecasting office at way, into some types of copper. RADIO IN FRENCH These were not likely to be sup-i

Measurements of the speed plied to 'welders, but it might

and direction of the upper winds bo of interest to record that the

Whon the balloon bursts,

small parachute opens and brings |

HOSPITAL

are obtained by tracking the presence of as little as 0.01 perf The French Convent New balloon by radar.

cent, of either selenium or tel- Maternity Hospital recently Jurium could make a copper vir- placed an order with the Cen- tually unweldable.

tral Radio and Electric Com- It safely to earth. Each Instru dised coppor indicated that this stallation in the new maternity Work, done on allicon-deoxi-pany for a 'Philips Radio In- ment carries a stamped addressed element had much the same of-hospital, where all the beds are! postcard and an offer of G- ro- ward for its recovery.

fect as phosphorus and that re-to ho fitted with pillow apenk sidual silicon in the copper, up ers to enable the patient to Many are lost at son, but those to 0.32 per cent., enhanced the listen in to radio programmes recovered can genotally be used tensile properties of the metal without the necessity of using again after only slight overhaul

The General Electric Co. of without much reduction in the head phones. England is the parent company ductility,

expressed by the The necessary equipment has

of The British General Electric clongation value. Variabla re- just arrived, and installation

Co., Ltd. of Queen's Building aults, however, had been obtain- will be completed before the end Hong Kong.

́ed from welded silicon-dooxi-' of this month.

IT WENT WITH THE WIND

When production depended onl the wind, calm days were fille days. Yet even in these times of electrical power, continuou production from every section of the factory plant is still to ha achieved. lly pioneering Improved designs in vital elec- tries! plant-in mators fra~- formers, switchgear and cable,; Crompton Parkfokon Ltd, hate done a great deal to eliminate windless. haars from modern production. Their planeering continues-and will; continuetting ло stand- arda-responding to new nerds; and always lending—alwayu -| life wheed of their tim

the

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CROMPTON

PARKINSON

ELECTRICAL PLANT

LIMITED

ELECTRA HOUSE, VICTORIA EMBANKMENT, LONDON, W.C2,

Sole Agents in Hongkong & South China: REISS, BRADLEY & CO., LTD. National City Bank of New York.Bldg., 2 Queen's Rd. C.,

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CHUNG YUEN ELECTRIC CO. 17. Des Voeux Rd., C. PACIFIÓ RADIO CO. 82. Des Voeux Rd., C.

鲁