1933-08-26 — Page 2

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HONG KONG DAILY PRESS, SATURDAY, AUGUST 26, 1933.

ENGINEERING AND BUILDING

"PHOENIX" MACHINE

MODERN PIPE LINES

TWO-STROKE ENGINES

·STEEL

Well Increase Speed Of Work

NEW YORK BREWERY

TRAFFIC SIGNAL

INVENTION

A Cardiff commercial traveller haa patented a road traffic signal

Buys British Engines invention which expert opinion

The Advantages Of Some Points In Their ins 440 horsepower.

Steel

Favour

The an

It is not uncommon to find that the" modern automatic machine, 1.e. tools of the lathe type employ- ed in the mass production of small

Intending customers are some steel parts, are not run up to their

In recent years steel pipes have times impressed by the represen- full capacity by reason of unsuz-

made great advances for water, able material being used for the sewage, compressed air, and other tatives of makers of 4-stroke cycle work Attempts to run at higher used. being lighter in weight than engines making such statements, speeds result either in rapid wear cast iron, and having the impor-as, "If our Firm thought the two

were better we, of of the cutting tool or in the form- tant property of elasticity so that stroke cycle. ation of a rough surface, the lata burst steel pipe is practically course, should make it." ter often accompanying screwing unknown, even at heads of 3,000 swer to this is that it is not so Also loss by easy for any Firm to change over operations. It would appear that feet head and over.

from one cycle to another. It re- the free-cutting steels used in the breakage, during, transport

quired considerable courage on our attempt to increase cutting speeds erection of steel pipes Is

fourstroke cycle have a tendency to segregation existant in the roughest country, part to decide to discontinue the engines when we knew that from and want of uniformity, which which is alone an outstanding ad- manufacture of

long custom there was a prejudice causes the defects just mentioned, vantage."

was in favour of that type. It only the conviction that the two- stroke type was inherently better and would win out" in the end that led us to take a step fraught at the time with considerable risk.

13

and

non-

Where It Leeds

acclaims as a great improvement an the present road control 878-. tem..

"Two oll engines have been or-

The new road controller con- dered from a Idricoin arm to pro- vide the power for, a brewery insists" of three green electric lights New York. These engines are symbolising "all clear." one yel- eight cylinder units, each develop-low for "caution" and three reds for "stop," in place of the three existing single lights. It gives # This same firm, Mesra Rus- both motorist and pedestriana ton and Hornsby, have recently

more efective indication of his received many orders from over-

traffic bearings at cross-roads and sens for. crude oil locomotives from

while 10 hp upwards. Two machines makes for greater safety, are being made for the School of actually speeding up tramc.

The single-light robot has the Military Engineers, Lisbon, while

disadvantage af causing LD- have recently been locomotives

get through on the "green," completed for New Zealand, Fin-proaching trafic to accelerate to whereas three greens fading out land. Belgium, France, Singapore. and China.

at set intervals, the last merging into the yellow, afford a clear view of the time margin avail- able.

MIDDLESBROUGH STEEL IN NILE BRIDGE

Nearly 4,000 tons of Middles- brought steel went to make the new Nile bridge at 'Cairo, built by Dorman, Long & Co. Ltd., and opened by King Fuad. It stretches for nearly a quarter of a mile in eight steel spans, the width being

One 66 feet.

section can be operated electrically to open for

The Ministry of Transport has commended the invention and in- quirles have been received from all over Britain.

BLYTH HARBOUR EMBANKMENT

whilst their low fatigue resistance Unquestionably for these condi- and ilability to fracture under tions the most efficient pipe line shock makes them suspect by the is steel, protected if necessary with designer. Mild steel, on the other a smooth coating" of bitumen or hand, though possessing many de-

Similar bituminous composition strable properties, is best cut at ly for oil, high pressure natural

Blyth (Northumberland) Har- moderate spoeds. A combination gas, fresh water. and salt water

bour Commissioners have decided of the merits of free-cutting steel steel is the standard practice

to extend the water ares of the" and mild steel is, therefore, a de- throughout the world in the pet-

It would not be easy for a four-river traffic

. Marble from the quarries near tidal basin in the upper harbour. sideratum and has. It is, claimed. roleum industry, with mains often

One of stroke maker to change over and been now produced in the "Phoo-hundreds of miles long.

the ornamental terraces. embankment, it has become neces- nix" (standardised rapid machin- the latest examps is the Iraq make a successful two-stroke En- the pyramids at Ghiza were used Owing to constant alipping of the

gine because the present develop for ing steel, manufactured by Messrs.oll pipe lines over 1.100 miles lonsment of the two-stroke cycle En-Four bronze lions taken from the sary to adopt steel sheet piling for

at old Kasr-el-Nil bridge, which it support. This will enable Steel Peech and Tozer, a branch now in course of construction from of The United Steel Companies, Kirkuk (Iraq) to the ports of Tri- gine, has only been arrived

ments. Flood-lighting has been present shoaling restored to Limited, at Templeborough Works, poli and Haifa on the Mediter-after experimental work extending replaces, adorn the granite abut-water area to be enlarged and the.

depth of 25 ft. ranean for direct loading on, to over many years, and success de- oil tankers so that, the latter need pends upon certain improvements employed over its entire length. in construction especially in con- not go through the Suez canal

nection with the scavenge system which has been developed as the result of experience not only in design but also in methods of

Sheffield.

Processes Standardised

IL

It will be of interest to discuss the advantages claimed for steel The processes of manufacturing in relation to the competition with this steel have been standardised cast iron, as well as the ferro- manufacture." so that the quality is unvarying concrete, cement-asbestos. and

Some of the four-stroke makers and can be machined at the high- similar forms of fabricated no have tried and because of Insuffi- i est possible speed with

a Ane homogeneous pipes, the basis of clent knowledge and experience Anish. The results of analyses which is cement.

Whilst of course have abandoned the attempt. No are not abnormal, the carbon con- opinions differ on the subject, the four-stroke maker could change tents are rather high, sulphur and main advantages 01 steel as over and get into the position manganese are perhaps at the against any form of fabricated ce- which we hold in the manufacture limiting figures, phosphorus is ment, pipe are high elasticity, high of two-stroke engines except after normal, and there is no silicon. tensile strength, complete imper-years of effort by which time we The structure is, on the other meability to liquids and gases at should be as far ahead of them as hand, uniform to an extent not any pressure. longer individual we are to-day. usually found in free-cutting lengths of pipe, 40 feet and over, We do not suggest that we have steels.

!!

This uniformity of structure is aslo, illustrated by the appearance of the steel when fractured. Izod impact test pieces show a "drag- ged" fracture indicating tough- riess, compared with the crystal- line surface.. denoting brittleness, of the ordinary free cutting steel. The actual breaking stress of a 1-1/16 m diameter specimen, which was black bar was 26.47 tons per square inch. with elongation of 31.5 per cent, on a length of 8 in.

This result compares very well with those obtained by similar tests of mild steel.-"Engineering.

For Constructural Work of Every

Description

Use Green Island Cement

TWO REFLEX TYPE BOTARY KILNS HAVING AN OVER ALL

«LENGTH

الاله

OF 254 FEET. "THESE KILNS ARE USED TO

MANUFACTURE GREEN ISLAND CEMENT.

Issued by the

GREEN ISLAND CEMENT CO., LTD.

2ND FLOOR

EXCHANGE BUILDING:

and resistance to attack, whether internal or external, by carbon dioxide and other substances, such as sodium sulphate, in solution which have a deleterious effect on concrete and cement abestos.

On

any monopoly in the manufacture of two-stroke cycle engines. the contrary there are not less than thirty-five substantial mak ers of this type of engine in Great Britain and on the Continent..

it

Another be the main advantages

Power Needed also is that steel is a homogeneous substance so that every inch of a We think that the two-stroke and four-stroke argument has pipe line possesses the same uni- form chemical and physical pro- been rather overdone. After all, perties, in striking contrast to a what the Purchaser requires is fabricated pipe composed of ex- Power from the shaft of his en- tirely different substances such as gine, and given equal efficiency it concrete, steel wire and asbestos. is immaterial to him whether it is

Further, steel is absolutely non-obtained on porous and non-permeable, so that no "sweating" takes place even a

Also there the highest pressures. is of course no absorption of water by the body of the pipe and no risk exists of towns water supply being contaminated by bacteria from the surrounding soll, which often contains sewage.

the two-stroke or It is in this four-stroke cycle. question of efficiency that the two-stroke cycle scores every time. In the first place it provides re- gularity of motion which is un- obtainable under similar condi tions with a four-stroke engine. This is a very important factor because cycllo irregularity means a continual strain on the fibres of steel in the engine crank- the

on the engine shaft as well as bearings.

It can only be emphasised that to run the risk with a pipe line of bursts, leakages, and heavy repair

In the second place there is a and renewal costs for the sake u Initial cheapess is a poor business real and substantial advantage in polley, and generally much more favour of the two-stroke cycle in costly in the long run, quite apart the amount of upkeep attention. all the worry and anxiety involv- required. The valves of a high ed. For example some of the ex- compression periences with breakages of cast trop pipes in transport are ex- traordinary, and it is impossible with reasonable handling to dam- steel pipe so as to prevent use, while as already mentioned, breakages are unknown...

age

GUARD AND DRIVER.

TELEPHONE COMMUNICATION

DEVICE.

The General Electric Company of America have devised a modi- fied form of carrier-current tele- phony which will enable the guard of a very long freight train to communicate. with the engirie driver. A microphone will be used for transmission, and a loud speak- er for reception, the circuit being established through inductances suspended in the engine and the 'guard's van a short distance above the ralis, through one of the rails, and through a conductor placed alongside the track. Loading con densers will be connected across the rails at intervals of about 1,000 ft. to prevent interference with the track circuits, "and the signal and other circuits will also be pro- tected. The transmitting frequen- cy will be 65 kilocycles, and an in put of 160 watts at each end of the train will be necessary. In the case of the locomotive, this power will be obtained from the -head-light generator, while, in the case of the guard's van an axle- driven generator and battery will be used - Engineering.

four-stroke engine

must be kept in concert pitch to obtain satisfactory results and this means upkeep attention by a more or less skilled attendant,

The new series of Atomic. Diesel Engines will, in our opinion, do much to win the "battle of the cycles" for the two-stroke.- "Petters Monthly News.”

Shanks

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Speed Regulator 15/6d.

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WARE

SANITARY

MODERN SANITARY

EARTHENWARE

APPLIANCES IN WHITE & COLOUR

THE JARDINE ENGINEERING CORK ORATION, LTD,

14, PEDDER ST. HÙNG HỒNG

Incorporated under the Companies, Ordinances of Hongkong)

SOLE ACENTS

SHAMEEN, CANTON,

the

B