1925-10-31 — Page 8

Lower-

THE HONGKONG

RING

and Better

Graham Brothers second price reduction

in four months, announced September 9th, is simply a

a reflection of the public's confidence In Graham Brothers Trucks.

The new 1-ton Truck chassis price, Detroit, is

G.$995

Without greatly increased production this latest exceptional cut would have been Impossible except for a sacrifice of the quality that has brought Graham Brothers so quickly to first position among the world's exclusive manufacturers of motor trucks.

The fact is that Graham Brothers Trucks are better than they ever were and any owner will tell you they have always been "remarkably good.

THE DRAGON Motor Car Com

LIMITED

93 WONG NEDCHUNG ROAD

HAPPY VALLEY

GRAHAM BROTHERS

TRUCKS

SOLD BY DODGE BROTHERS DEALERS EVERYWHERE

MADE AT DETROIT AND AT ONTARIO, CANADA.

1926

SINGER

ANNOUNCEMENT

FOUR SEATER" DE LUXE" $2,200

1926

TWO SEATER "DE LUXE" $2.200

BRITISH THROUGHOUT

A VERY LIMITED NUMBER of the famous.“ SINGER”. 10/26 h.p. fight cars (1926 model) both two and four seaters, will be avail. able for delivery in Hongkong early in December.

Make your "purchase now and avoid delay in delivery, already booked orders for this initial 1926 consignment.

FOUR WHEEL BRAKES

PNEUMATIC UPHOLSTERY

We have

BALLOON TYRES (Dunlop) OVERHEAD VALVES

LET YOUR NEW CAR BẸ À

66

SINGER"

FOR DEMONSTRATION AND FULL SPECIFICATION APPLY TO

GILMAN & CO., LTD."

HONGKONG BANK BUILDING.

SUPPLEMENT SATURDAY OCTOBER 1

THE PLAIN MAN AND HIS CAB

THE POWER UNIT

(By 1 W

Mills.)

B. S. A. MOTOR CYCLES

The Carburetter

chamber by a pipe from the car An already mentioned carburet with gravity feed, ie, with its tank diroat (in the case of a car tere are more often than not prope rol tank above the level of the prietary articles manufactured by specialists, and a successful type tank, if the main tank is at the carburetter) or from the vacuum of carburetter may appear on extreme rear of the car or any great many makes of car

A carburetter is nearly always level. When the correct level is where else below carburettor self contained. That is to say obtained the rising float pressen that it is supplied to the makers the needle upwards on to its of the engine ready for bolting to seating and the supply is cut off the inlet system of the engine and until the level again falls and the to receive a petrol supply pipe float drops. The above descrip from the car tank, When those tion applies only to a foat cham- connections have been made all ber in which the petrol enters at that is required is to provide a the top. A number of types of meane of operating from the driv- ing seat the lever which open or bottom feed, "Le. the system in carburettor continue to employ closes the THROTTLE.

All types of carburetter have in chamber. In this case it is neces which the petrol enters below the common the following details:-

(1) a "float chamber in which the float as the level rises to press sary for the upward movement of is situated the mechanism the needle downwards on to its for preserving a constant seating, and this is easily arrang level of potrol in thoje ed by using pivoted levers and chamber",

ure

"

jet

(2) a "jet chamber" in which counterweights. As the float and

situated the "jets

chambers communicate serving to vaporise the pet-through a pausage the level in rol for mixing with the air one is the level in the other un- less the instrument is tilted. 2. supply, and

(3) a delivery control valve

(termed the throttle" which regulates the amount

appears

The makers of a carburetter are particular when they aupply it for a given engine to make of mixture, supplied to the settings" which will give the engine on the inlet stroke, best results on that engine. This In other details, as well in the being so it is unwise to interfere principle upon which the instru- with the adjustments made by: ment depends for its capacity to makers unless maintain the mixture exact in absolutely necessary to do so and proportions at all engine speeds, the principle. upon which the the various types of carburetter particular instrumost operates is differ enormously. The most fully understood. Makers almost satisfactory types have a mini- invariably embody in their in- mum of working parts and the strument one adjustment which designers rely more upon the alters temporarily the automatic shape and proportions of the functioning and they frequently vaporising surfaces and those include other means of adjust- which produce the flow of air past ment by which" the automatic the jets than upon such mechani-functioning may permanently be cal devices as moving tapered modified. The adjustment first needles and moving bypass valves, referred to is the device provided Types such as the Zenith and the for altering temporarily the levell Claudel-Hobson, to mention two of petrol in the jet chamber, of the most widely used carburet which adjustment is commonly ters, depend for the

known as flooding the car- sating" effect which is necessary buretter". Good examples of the fon a subsidiary passage and jet latter means of adjustment are in the one case and a throttle the many varieties of slow-run- barrel with the aperture cut in ing devices and the "dir strang- trigonometrical pattern in the lers often incorporated in the other case. In using the carburet-air intake pipe. ters all that is necessary is to Carburettors aro occasionally keep all passages and jets free of water jacketed in the same way dirt, grit and water,

as the cylinder heads, but in or

44

compon-

It is most unlikely that the me-dinary climates and with the chanism for preserving a constant more volatile grades of motor level of petrol in the jet chamber spirit this should be quite un will be of other than what is necessary, especially as the boat known as the needle and float obtained from circulating hot type. Constructionally the float water from the water jackets chamber and the jot, chamber are round the exterior of the car often one, as a passage from the buretter is not available in start- base of one chamber to that of ing, when it is of most assistance. the other is necessary. When Another practice more commonly this form of construction is employed is the extension of the adopted an important advantage air intake pipe into a kind of is gained, in as much as it is cowl which lies close to the ex- then possible, after disconnecting haust pipes and ensures hot air the petrol supply pipe and de-being drawn through the carbur taching the float chamber and jet etter. More common again is chambor unit from the body of the practice of running exhaust the carburettor, to clean all parts pipes through or across inlot of the instrument likely to re- pipes for the same purpose. The quire attention at one time. merits of "pre-heating", as this The method employed in the heating of the mixture before it needle and float system is is drawn into the cylinders is identical in principle with the called, are not too well establish- ball and cook system used in ed. One definite drawback to tanks and cisterne. The dif pre-heating is that when this ference in construction is in the system is employed the "charge employment of a cylindrical is less in weight than a cold sheet copper float surrounding a charge even though the volume needle tapered at its end which occupied by it is the same. Under is pressed on to a seating or al- certain circumstances, however, lowed to fall away from it by the there are conditions in the inlet float as the latter rises or falls system generally which call for with the alteration in petrol level. some method of pre-heating. Petrol is supplied to the needle valve in the top of the float]

(To be Continued.)

LOOK OUT FOR THE

OTHER FELLOW.

MAYBE HE CAN'T

ASBESTOS MARKET, Asbestos, producers owe their fortunes in large part to auto- mobiles. Autos tako 50 per cent. of asbestos products annually. Annual consumption of asbestos Buyer (angry at having come brake linings is estimated at far to inspect a usologs car)

70,000,000, feet. What is that number on the front-72

TO GET OUT OF HOLE, Seller: "The registration numé ber. What did you think it was in an effort to get out of a mud Setting the emergency brake, Buyer: The year of

it hole, acts as a drag on the wheels. manufacture!!

This causes the wheels to pull Melbourne Punch, Australia, spin, or slip.

hard but slowly, so they will not

Famous For Reliability and Economy

Full Particulars from the Sole Agents:

THE SINCERE CO.

SOCONY

MOTOR OILS

ANDE

GASOLINE

Rudge-Whitworth

Four Valve.Four Speed

RW1925

MOTOR CYCLES

NEW STOCKS ON HAND

ALL ELECTRICALLY EQUIPPED 3.48 H.P. $485.00

4.99 H.P. $525 4.99 H.P. Combination $775,00

RUDOLF WOLFF & KEW, LTD.

54, Queen's Road, Contra

Phone C. 217.

"AUSTIN

7

FIVE

Reasons Why The AUSTIN SEVEN is the Best Light Car for Hongkong

It Vibrationless

It is very economical

It is reliable alv

always

Lo initial c Cost

and service after anle.

The 1926 Model has many improvements, s speedometer,

STOCKS CARRIED AFTER OCTOBER 1925

Alex. Ross & Co. (China) Ltd

BANK OF CHINA BUILDING, HONGKONG