1947-10-09 — Page 8

THE CHINA MAIL, THURSDAY, OCTOBER 9, 1947.

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ENGINEERING PAGE

Smoother Strength For

"Sherlock

Holmes" Gadget

The latest in electronic equip ment-a Sherlock Holmea leak- snitter-will insure a perfect { seal on vacuum tubes, evelo- trons and furnaces

The secret "ferret" in the Jenk detector is a highly sensi- Live gauge tube which responds only to hydrogen, Hydrogen has the smallest molecule "of any of the elements and, there- fore, easily penetrates the most infinitesimal space.

The Instrument's inventors sny that in operation the vacuum enclost.re to be tested for leaks is hooked into the locator, establishing Д con- tinuous vacuum. Hydrogen s then applied to the outer sur- face of the object being tested If there are any leaks, ting | hydrogen atoms creep through the connection and run down to the sensitive indicator which immediately betrays something amics.

New Trains Steam Engines Giving Way

Way To Diesel-Electrics

By John A. Millar

In The

"Christian Science Monitor”

POSITIVE PROTECTION FOR TIMBER

permitted the

Diesel engine to

be started when there was no load on the generator and to be played under load only after it had attained sufficient speed.

The first such Dlegal-electric locomotive in the United States) was a switcher placed in service by the Central Railroad of New Jersey in 1924. Gradually other! railroads began to adopt them, slowly at first and then more rapidly.

Typical

Ten years ago there were 175. In service in the United States. Today there are well over 3,000. Because they require less time for fueling, watering, and malu- tenance, the Diescis are mort nvallable and have largely sup- plemented steam locomotives for swiching purpose, They are also being used increasingly for high-speed passenger and heavy freight service,

What happened when Diesel-

When the famous Mohawk & of a pusher engine accompanied electric locomotives were put to Hudson Railroad, cornerstone every train sa it made its way work on the Alaska Railroad is of the present New York Central up the hill. Today the Central's typical of experience with this system, began operating 100-odd biggest steam locomotives still kind of motive power, After years ago, it had to rely on get help over this portion of the United States became an horses to climb the grade west-their run, but sleek, gruy Diesel-active participant in the war, bound out of Albany, That electrics arc hauling 16-car Congress authorized the con grade has always been The instrument weighs only

the Pullman trains up the rise un struction of x.12-mito cut-off 25 pounds and can be operated steepest anywhere on the Cen-aided

which shortened the distance be- by non-technical personnel tral's main line.

That is typical of the change tween tidewater and the interior United Press.

For years the panting efforts that is sweeping over American of Alaska by 50 miles and pro- railroads. In every section of vided a more protected route for the country Diesel-electrics are the transportation of vital war replacing steam locomotives. materials and supplies. The roster of trains using Diesel Enthusiasm over the construc- motive power Includes such tion of this new cut-off was soon famous names as the Twen-cooled, however, by the dia- tieth Century, Merchants' Limit covery that the railroad's sleam ed, Silver Meteor, Green Dia locomotives could not be operated: mond, Crescent Limited, Flying over, it because smoke endanger- Positive, all-round protection at little cost to every Yankee, the Zephyra, the Roc-ed trainmen and passengers in class of timber is now possible in Hong Kong kels, and the Hiawathas, to the tunnels. It would have cost: with the aid of a unique wood preservative mention only a few,

too much and taken too long to called "Atlas A." Any timber-native or in motives accounted for 33.1 per these tunnels.,

Last year Diesel-electric loco-arrange adequate ventilation for ported, green or seasoned, before erection or cent of the total switching hours, in situ can be rendered safe from Insect 12.3 of the freight ton-miles the purchase of two Diesel- The problem was solved by attack and organic decay, and made resistive and 22.7 per cent of the passen electric locomotives each of to fire. The method is simple, the cost trifling, ger car milles produced by coal 1,000 horsepower. Running as "Atlas A" is a compound of also largely eliminated. Timber and Diesel locomolives combined. a pair, they were able to haul mineral origin, supplied in a high treated with "Atlas A" has been

After more than a century of 50-car trains over grades that ly concentrated form, and simply found to be resistive to Are action uninterrupted supremacy. the would have limited steam loco- requires dilution with water boin a ratio of more than four to reciprocating steam locomotive motives to loads of 25 cars. fore use. Application of the Pre-one nx compared with raw timber. is being seriously servative solution is made either

challenged. "Atlas A Wood Preservative

No Stops by immersion or brush-coating quite odourless, and for this rea- put in service on American rail made their first trip, Col. O. A. Of the 1,206 new locomotives After the new locomotives had no elaborate plant is necessary. son is eminently suited to the By either mothed adequate pene-treatment of interior woodwork during the past two years; Ohlson, general manager of the tration is obtained and proper It is also possible to decorately 192 are steam-operato;

assured.

railroad, commented happlly: subsequent Once impregnated with "Atlas painting, varnishing or polishing. electrics; Orders on the book cleaning the fire box, the opera- "With no stops for water or A," the timber is absolutely im- Another feature of this Preserva of the locomotive builders at the ting costs will be less than for mune from white ants..

borer tive is that. it hardens beetle, etc. In fact, insects and toughens the ward fibres, so that tell the same story-64 steam, to the North Pole, like as not and beginning of the present year the steam engine. If ever I get vermin will not stay in the floor-boards, stairways, etc. ara 6 electric, and 534 Diesel. vicinity.

Moreover, there is no rendered more resistive ko the

I'll be hauled by a Diesel-electric risk of damage by fungi and dry effects of heavy, trafie.

Older Therat

and I won't be surprised if it rot., Tests have proved that spores

No other wood preservativo

Only once before has the climbs right up the Pole!" cannot exist on or in "Atlas" offers such complete

protection, shadow of competition fallen

One reason for the popularity treated wood. The Bro hazard in Yet "Atlas A" is in no way ex-upon the traditional steam of the Diesel-electric for high- pensive and in use is defaltely locomollye, That was 20 years speed service is its low center economical. When comparing the ago when the electric locomotive of gravity which permits it to price of "Atlas A" with that of loomed up as a possible rival. go around curves with less re- competing materials, it is well to But this threat did not materia-duction in speed than fe required bear in mind that

"Atlas "A" 18 jize. concentrated. One gallon of this

with a steam locomotive. AT Preservative, when diluted, will

Out of a total of some 400,000 other reason is the smooth start- provide four gallons of ready-to-miles of track, only 6,350 niflesing possible with electric drive, use solution for application by have been electrified. Of the Important, too, Is the fact brush-coating and as much as 10 42,000 locomotives In service, that pounding of the track is gallons for treatment by immer-only 745 are of the straight reduced, because the power is

electric type. This is but two applied Individually "Atlas A" Is supplied in

to each one more than number in service 10 axle, thus getting rid of heavy but two grades "Stan-years ago. which is staibless,

slide rods. Finally, a Diesel New electric locomotives aro locomotive does not need to enrry "Brown," which imparts a pleas-built from time to time, ing stain. Both are packed

The with it thousands of gallons of handy drums of one and five gal. Virginian is getting four 8,000-water to be made into steam, lon capacity.

horsepower "supergianta" to haul its coal trains over the Appalachian Mountains. They will carry the greatest weight on the drivers of any locomotives in the world.

preservation

treated surfaces

sion,

by

the

and

in

The local Agents are W. R. Loxley & Co. (China) Lid., York ¡Building.

the other

1,014

are

Diesel-

STEEL WORKS The Great Northern is getting EXPANSION

a couple of big unita,, too, for operation through its Cascado Tunnel. They will be the world's But developments of this kind largest single-cab locomotives. comparatively rare.

A large-scale development plan which will increase capacity by 40 per cent has been ди nounced by the North England iron and steel firm of Skin operation are actively under dlu major extensions of electric Bingrove,

The scheme, which has been approved by the Iron

Steel Board, will coat

and about

cussion,

No

Back in 1803 the Gerrann scientist, Rudolf Diesel, invented! £1,700,000. It includes the build an internal combustion engine ing of a new blast furnace and burning crude oil and having

new 300-ton open hearth efficiency of the steam engine.

about twico the thermal steel furnaces The capacity of It had the serious disadvant the existing 18-inch ro-rolling mill is to be greatly increased be started under load. It had age, however, that it could not and a new cloetric generating to be set in motion rat and the 'plant will be installed.

load applied gradually after if

The work,, which is being started immediately, will be Was running. In this respect it spread over about three years.

was Ilke the ordinary automobile engine which cannot be started, when it is in gear. A mechani FEATHERS FROM cal clutch solves the problem satisfactorily for the automobille, FORMOSA but nobody has yet been able to se plan design a mechanical clutch that From their branch in Formoss, will stand the strain of starting George Lin & Company are of a heavy railroad train, pr fering large quantities of Googo The problem of how to use, a Feathers Gray in colour, they Diesel engine in a locomotive have been selected by: machine was finally solved by combining und aro 80 per cent clean and it with an electric generator rendy for processing in Hong furnishing) power for motors Kong Factories, kva

edpnected to the wheels?

"

(JE)

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