1927-03-19 — Page 10

THE HONGKONG TELEGRAPH.

When You Wish To Buy A Motor Cycle Go To

1

ALEX. ROSS & Co. (China), Ltd.

MOTORING SUPPLEMENT. SATURDAY, MARCH 19, 1927.

X-RAY EYES AND RADIO EARS.

How Flaws and Noises are Detected.

(Telegraph Special)

Deferred Plan of Payment 30% down Balance by arrangement.

FIAT

Deferred Plan of Payment

FOR EVERY CATEGORY OF SERVICE

30% down Balance by örrangement

و الكاملة

519. 40 H.P.

THE HIGH-CLASS CAR

The Cars of

HIGH POWER

THEY have the best lines in Hongkong.

THEY guarantee their cyclos.

THEY give you three months from service.

THEY give the Purchaser the best deforred terms.

1/4 Down, balanco to suit buyer.

Where can you get more for your money?

A. J. S.

DOUGLAS: INDIAN TRIUMPH FRANCIS - BARNETT Motor Cycles

(STOCKS CARRIED)

ALEX. ROSS & Co. (China), Ltd.

Sub. Dealers

KOWLOON MOTOR CAR & CYCLE EXCHANGE CO.

Michelin Tyres Mean

The cheapest

in the long run.

Shipments arrive every week from France to ensure fresh goods only. Sole agents for South China

J. GIBBS & CO., BANK OF CANTON BUILDING Phono C. 704

Phone C. 704

CHINA UNDERWRITERS, LTD.

FOR

ALL CLASSES

OF.

MOTOR INSURANCE

WRITE FOR PROSPECTUS

HEAD OFFIOL:-

'ST. GEORGE'S BUILDING, HONGKONG.

TELEPHONE:

C. 1121-2

SOCONY

MOTOR OIL

MODERN OILS FOR MODERN MOTORS

REFINED UP TO A Standard NOT DOWN TO A Price

The oscillograph is more dependable than the ear nowadays to detect the sources of noises in autos. How these noises are actually soon is shown by the demonstra- tion of sounding a tuning fork before a microphone, shown here. What's scon is shown below-the oven wave being thet of the clear sound of the tuning fork, the irregular wave that of a noise.

H

BY ISRAEL KLEIN.

strong enough to actuate the deli- cute element of an oscillograph. Detroit, Feb. 10th.--Automo- An oscillograph is an instrument bile opgineering has been brought that shows or records the waves down to such finesse in the of a charging or pulsating process of improving the car that current. more delicato instruments are being used than man's own

senses.

LIGHT REVEALS' WAVE.

While the noise waves are sent The eyes and the ears of man through the amplifier to tho no longer are dependable for the joscillograph, there's danger of discovery of the finer flaws in the distorting it if the amplifiór isn't manufacture of automobiles and under expert control. automotive parts: Now X-rays detect the slightest defects in the In the oscillograph a tiny spot construction of parts that no me of light reflected from the moving! chanical instrument, let alone the clument vibrates back and forth across a photographic film revolv- eye, could have found:

ing on a drain. This epot of light can be seen through a cainora like

Now radio is being employed

to take the place of the cars, just arrangement while it is boing

as X-ray replace the eyes. One recorded on the film.

of the large gear and bearing

manufacturers of the United

States uses a radio detector to!!

After developed the film shows

a trace ropresenting the form of

pick out only those gears, and the wave, as well as the intensity bearings that are almost noise-and pitch of the sound picked up

by the microphone. less, or to co-ordinate gear sets so that their vibration will not har- Each of the devices used in this monizo, or 'hoterodyno," with noise-recording process is design- another part on the same car ad espacially for this work and is having the same frequency in a finer detector than the ordinary vibration and thus causa what radio equipment known to radio we consider noise.

fans.

Noises are being photographed, by radio means, so that they may be studied with greater precision;! and leasure. This work is now going on at the General Motors research laboratory here.

."

HOW SOUND IS SEEN.

I

NOISE IS ELUSIVE.

The apparatus has to be ex- tromely delicate because of the difficulty engineers have in locat- ing the source of a noise,, Noise- hunting is difficult because vibrations may be "telegraphed" from one mambor to another. At these laboratories, noises to Thore is always the danger that bo studied are first photographed the wrong part will be acensed through a complicated arrango-of ipaking the noise. It often ment of radio instrunouts, a light happens, too, that when the roul ray machine and sensitized film. Jsource is found the changes: The apparatus consists of throo necessary to remove it can't be units.

made.

First a microphone picks up Instead one or more of the the noise pulsations in the air parts, through which the noise and changes them into pulsating is being "telegraphed" to the air electric currents. That can be and the passengers' ears, has to bo done very easily, because a noise changed so that they will no is nothing but a series of irregular longer respond to the vibrations

of the offending part. and complex sound waves.

Having boon converted into! In this way many of the noises electric pulsations, these noise that used to bother automobile waves are magnified by a vacuam drivers and their passengers have tube amplifier until they become already, been eliminated.

GARAGE AND DANCE HALL.

A garage and dance hall in one is cortainly a novel idon, yot that is how the Jonos Motor House Morningside, Edinburgh, have built their new promises. Patrons can park their cars in the garage and walk straight into the ball-

ronm.

WANTS POLICE PERMITS.

Police Chief, K. H. Powell, of Youngstown, Olio, has proposed an ordinance requiring drivers of rented cars to get a permit at tho police statione. This ordinance is being contested by auto rent- ing companies.

507. 15-20 H.P.

509 9 H.P.

TEL. 0. 2221

-1

5/7 Scalers

The Cars of

HIGH UTILITY

4:5 Seaters

5-12. 20-30 H.P.

503. 12 H.P.

Solo Agents for flongkong; Canton and Macao SOC. ITALIANA. IMP. ESP. ESTREMO ORIENTE, LTD., Managers-A. GOEKE & COMPANY. China Building 3rd Floor.

TEL. C. 2821

Owning a Buick

Reflects good Taste

Style and distinction in your motor car are important to you. Buy a Buick !

Then your car will appeal to your sense of good taste, There is a youthful smartness in the profile of this famous motor car which never grows tiresome, no matter how many Buicks you see.

And you see Buicks wherever you go-bought by people who value finer performance as well as princely beauty. Buick to-day is a mechanical masterpiece, with an engine literally vibrationless beyond belief.

Buy a Buick! It is a car you will be proud to own, and delighted to drive.

THE HONGKONG & KOWLOON TAXI CAB CO., LTD. Sole Distributors for Hongkong and South China.

THE DRAGON MOTOR CAR COMPANY, LIMITED.

... Happy Valley

Authorised Sales and Service Station....

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