1931-10-24 — Page 2

Use Green Island Cement

for

Constructural Work of

Every Description.

HOW GREEN ISLAND CEMENT IS MADE

Green Island Cement is manufactured from hard limestone and clay," It is necessary that these materials should be finely ground in order that they may come into intimate contact with one another in the burning process.

The finely pulverised materials are "mixed in a certain definite proportion, roughly one part of clay to three of limestone, and are fed to the Rotary Kilns.

In these kilns they meet the hot gases and flames generated by pulverised coal blown in at the other end of the kilus, and after various chemical, actions have taken place, they combine to form Portland Cement Clinker.

The Clinker is ground down with a small percentage of gypsum to regulate the setting time, and Green Island Portland Cement is thus produced.

Although Bounding so simple, in reality the process is an intricate combination of mechanical, physical and chemical operations, needing great skill and care. Nothing but constant and accurate supervision will yield the results so en Island Cement, namely, well-known with Green strength, uniformity and reliability.

USE GREEN ISLAND

'

CEMENT

Issued by the

GREEN ISLAND CEMENT CO..

2ND FLOOR,

BAORANGE BUILDING.

LTD.

BERVAR

THE

SEA-WATER-PROOF

SPEEDBOAT VARNISH

W. R. LOXLEY & CO.

YORK BUILDING,

CHATER ROAD.

SWALLOWS GO SOUTH BY PLANE

Berger Product

HONG KONG DAILY PRESS, SATURDAY, OCTOBER 24, 1931.

ENGINEERING AND BUILDING

PETROL ENGINES FOR INDUSTRY.

MANY ADVANTAGES OF THE SMALL POWER UNIT.

COMPACTNESS AND PORTABILITY ARE IMPORTANT FACTORS.

It is therefore abb surprising that the internal-opmbustion engine in one form or other has been adapted to meet these numerous require. ments, and many types of small units are available. Those using

EXHIBITION FOR EXPERTS

SHIPPING ENGINEERING

AND MACHINERY.

With power units of this type, consuming a very compact fuel

A Shipping, Engineering, and easily stored and transportable, many power requirements can be Machinery Exhibition was held at emaily and effectively met, while Olympia, London, from September variations can also be introduced 10 to 20 The Exhibition was main to surit losal conditions, as, for

ly one for toohnicians, but there example, the installation of mori. effective cooling for tropical work. were many items of very great in One of the earliest applications tereat to those who are not experte of the small unit was the develop in either. Shipping or Engineering, ment of electrical power, especially Amongst the shipping exhibits was at first for lighting purposes in:

MYSTERY WIRELESS

STATION:

MESSAGES TO RUSSIA.

New York. The discovery that an illegal radio station here has been in communication with the Soviet Government has led to in- vestigations by the local polios and the Federal authorities,

The station Las been in operation for several months, and its mesd ages have been intercepted and de-- coded by experts in Washington.

Efforts to trap those using it are understood to have been unsuc- cessful so far, "icak" somewhere having enabled, the operators to re- move it whenever the place from

localition for from gas and electri- a highly complicated echo-sounding oity supplies, and even in places apparatus which be of great whore, though alternative supplies utility in making records of the were available, it was desired to be sealed from these recor independent of them

possible For country house and similar purposes the petrol-electric set hus grounds. An undoubtedly solved the problem, of the machine was fitted to the The official Soviet Amtorg Trud- and has replaced the more cumber British Admiralty research vessel ing Company, who are understood Accessible types of power: The de the heavier types of oil have the some steam sata and also Challenger for its long, voyage in to have been under surveillance, all engines of the heavier type-

Engineering practice offers num- erous instances in which shall power unita especially of the por table type are necessary owing to limited and local requirements and comptiness from the more usually velopment of such power units is a disadvantage of being difficult to featurs of modern progress which hns the further advantage that the start up from cold, though this can capital outlay involved is small be got over by, starting up with a enough to be borne by those who little petrol. Again, the parain otherwise would be restricted to

engine had at one time a large manual labour. The usefulness of a power unit increases with its vogue, an incidental advantage be- flexibility, and many types of ing that it could be readily adapted portable engines have been do to run with the lighter oil when veloped

this was available or desirable.

Steam units. had, and still have, their vogue, but they are handicap- ped by at least two disadvantages. One is the problem of a suitable water "supply, and another is the intense corrosion which takes placa in the boiler when the unit. is-as must often happen-out of use, The portable steam unit also in volves the transport of a somewhat bulky and weighty fuel.

A Compact, Engine, Thus the more compact form of

power unit provided by the small oil engine has come into use în innumerable cases in which any type of large unit would be quite out of the question. Among its ad vantages are the relatively small amount of cooling water required, which need not, be of any special degree of purity, and the fact that gevoral types of engine can be

adapted to a variety of fuel.

Small engines of the oil and paraffin type are therefore in com mon user for these purposes, en- gineers having, found it possible to

to

Easy to Bun,

and

define new fishing which messages word being sent way

imental modelraided

simplified deny any knowledge of the outlaw

apparatus,

The great morit of the system is its the Antarctic, and simplicity and freedom from form of the device has now been trouble, together with the ongo with mandle abailable for trawlers, which the concentrated fuel can be handled

Automatic Operation.

of

Another illegal sending station which secret service agents are try ing to locate, is believed to be dir acting the operations of Japanese

Acid-Basisting Metal Alloys.

very great interest to experts, One of its advantages in the and especially, to those chgoged in drug smugglers. early days at least, was its adap-chemical industries is the new tability to automatic operation In

soms of those sets the whole of the metal alloy Batterium, of which many samples were, shown. This, them Operations, could take care of solven, With the discharge of the metal is a British discovery, and battery an automatic switch sufficed has the peculiar quality of being to effect the starting up of the rn able to resist acide; it has also a gine, which, coupled to the dynamn,

2.

with

Facture of electric batteries!

Beardmore All-Purpose Engines. Another feature of the Exhibition was the inclusion of a number of the very latest models of internal combustion engines made by the firm of Beardmore

In the meantime the development of the relatively small engine for automobile work has given rise to a range of models combining the highest efficiency with continuity of began at the designed speed to great tensile strength and tough-***

charge up the cella, at the com-ness. It'ia non-corredible and non. operation, and, moreover, not repletion of which automatic cut-off ferrous, and guaranteed to

engines wore shown, the result of quiring what might be called skill- came into operations

stand the action of virulent chemi-

twelve years of intensive reagarch ed attention.

cals and to resist erosion. Bat-and much experience in the manu- terium is therefore particularly suit facture of such machines. Many ble for use in the construction of of them are designed so that with

used for a variety of purposes, such general chemical plant, while its minor modifications they can be as road and rail traction, station- ary, marine and mobile sets.

It would therefore appear to be a natural step to adapt these finest

(Continued on next Valumn.).

With continuous running a num bor of considerations demandel at tention, particularly lubrication This point was dealt with by mak examples of light oil engines to re-

ing it possible to put the set out quirements for which they were not of action when the oil in the reser-everyday use will be for the manu originally designed, buy to whichvoir has reached, a predetermined some light modification of con low level. Moreover, being of sim- ple type and substantial construp struction would render them aption, these sets were not liable to plicable. There is a wide urmand get out of order, and for such pur for small power units of low initial poses as decarbonising the design, admitted of their being, casily open- cost and capable of operating satis-

ed up, so that the work could ba factorily in conditions in which no done in the minimum of time. great engineering knowledge or skill

M

is available for their oversight,

That the light car engine, mocta

compress all the essential parts and these requirements there can be no accessories into a relatively small doubt in vies compass for transport. Moreover,

the great advances in the relative which the

ly small units of the light oil type, acquires a sufficient knowledge of eppecially those which are now in his engine to drive with confidence. vast numbers rendering such exThat confidence, it may be added, cellent service, in road transport,

pggest that they might readily be is itself a tribute to the reliability adapted to the conditions of a wider of the modern car.

field.

Many Diverse Uses.

The scope for such units appears to be almost without limit. They

Electric: Welding

In the earlier application of this. system, the petrol engines were specially designed for the purpose. readiness with To-day, as has already been men motorist tioned, the availability of very

eficient light oil engines, has alter-|| ed the position. These engines, with little additional equipment and mounting, can serve for raising electric power required for illumi natoo, electric welding, flood-light, ing, and many other purposes. Such sets ary, employed,

in the flood lighting of aerodromes, while for power on a small scale, a com- hination of engine and suitable cleitric generator is simple în use,.

Some of these types of engines. have been so adapted as to make thom suitable for many and varied

are effectively applicable to light purposes in industry. This in the loecmotives, shop trucks, and light first place involves mounting the portable cranes and winches, while engine and its accessories suitably road-making offers many opportuniupon some simple foundation,

ties for their usa in concrete mixera

ør,

power being collected and dis- tributed through a switchboard as tached to the sot, which may even be of the portable type...

and in air compressors for drilling alternatively, upon a stout channel and angle iron framework. The work

also include a equipment must, petrol tank, un effeicht radiator,n the welding shop, too, the

and:

silencer

dequate exhaust and

Reducing Gear.

special type of electric generator 18- quired for the purpose

is coupled

to the engine and mounted one suitable stand. The low weight

Further, the numerous and in creasing demands for electricial pover offer scope for the applica tion of such a type of prime mover, especially at plages which are re- mote from large power stations and where transmission coats might

Such engines can be put up with confers the great advantage of therefore be too high. Electrical

reducing gear for obtaining a mobility, and from a 10-20 bp. en- power, too, may be generated on Swallows from Britain and other the spot by the same type of engine, lower speed on the power shult, and gine a welding current of 175 to 200 northern countries, accustomed in

and then easily distributed, bring September to spend a few days in rendered available over the governor which will secure amparca can be obtainede. In all the Austrian sunshine, are collapsshole of a local area. This is of accurate control of speed within these applications there is the ad- ing by thousands from cold and special importanes in agricultural sprrow limits. Generally, where ditional advantage that replace

bronce of t

their usual insect food work, in which numerous operations operation is to be intermittent, the ments are readily obtainable from They are unable to cross the Alps, call for power, though only on a clutch type is employed, while the the large stocks held by the engine. are fleeing northwards from Aus “My telephone is ringing all limited scale and intermittently,

clutchless type is regarded as more trid owing to the drop in the db; day,” said the secretary of the ancial tomperature, another group Vienna Animals Protection Lea. In the transport industry the of British visitors-swallows-vogue People are asking what, to petrol engine offers unique advan suitable for such duty as that re been immobilised in transit do with hundreds of swallows shel tages for the rapid conveyance of dented fall in the physical tem kitchens. We are collecting: perature, thousands in Viennn.

UNABLE TO CROSS THE ALPS,

Vienna. While British tourists.

builder,

All these factors greatly simplify

through Austria by the unprece-foring in barns, factorics and even loads of small or large dimensionsquired of light locomotives, portable the power problem, and thus offer

scope for the use of mechanical arranged to run either with or with cranes, and concrete mixers

Accessories that may be added at Power from relatively small units For the first time in history these "The first batch will leave by the out rails. In the former case loads migrant will be conveyou to the regular neroplane for Venice, to 30 tops can be carried at a will include, reversing gears of the to perform more effectively and

kup. sunny south by neroplane

where they will be released on at 10 The Austrian winter has begun rival Though there is little so early that for the first time for money in Austris, we are unable ycara akiing hastarted in Septo abandon these visitors to starva tamber on the slopes of the Raxalp, tion. The air line is placing big loss than two hours from Vienna, machines at our disposalin

speed of eight miles per hour, while

in the latter petrol engine trucks

offer some advantages over electric vehitle

tyme and those can, gen soonomically, Traustrial Operat

carried on tho letally be supplied by the engine formerly

Jabour manufacturer from stock

THE EXPRESS LIFT CO., LTD.

WITH WHICH E INCORPORATED THE BUSINESS OF

SMITH, MAJOR & STEVENS, LTD.,

EXPRESS SMS

MODERN LIFTS

FOR MODERN BUILDINGS

SPEEDY RELIABLE SERVICE

FOR DETAILS APPLY TO

THE G.E.C., QUEEN'S BUILDING, Chatra Road.

ING (2.8.C.) ELECTRICAL