THURSDAY, SEPTEMBER 25, 1930.
ALL CORD PROCESS. ability to stretch absorb all the
Result of 80 Years'
The
Development.
RUBBERISATION,
strain.
Insulation of Cords.
Another effect of the heavy ten- sion required to remove baggineas is the shrinkage in width with consequent lack of the number of tords per inch. This is serious' in that it precludes maintaining sufficient space between cords for insulation.
present high state of The necessary complete insula quality control and manufacturing tion of all cords, in the case of. oficiency in the production of All elfected, except through. friction
a woven cord fabric, cannot be Cord material for tyre carcasses ing. On square woven fabric has been the result of over eighty frictioning presents no problem' at years of development. From a all but, a flimsy cord fabric it re- small, beginning with crude ax.sults in serious distortion with its
THE CHINA MAIL
The proper operating tension is obtained in the tension unit which'i consists of a series of polished steel bars over which the cords are lensed in pairs immediately after emerging from the collector thread boards.
Tension is varied as required by changing the rium-{ ber or
the position of
NERVE RACKING.
Ford Truck's Unique Trip.
The tension unit is also equipped Hills & Model AA 'Ford truck re- bars. From the valley of a Thousand with an expanding comb of the lazy long type to provide a preliminary cently emerged triumphant.over a width control of the sheets of cords. thousand obstacles, such as are found only in South Africa-dizzy erags, no roads, steep climbs, dan- gerous descents, deep, treacherous shifting sands..
of the
Spacing Unit,
Over this wild section the Ford went, mostly in low gear, on only a quart of added water and no The spacing unit is mounted on additional oil. And the truck throughout the the calender frame directly back never baulked
middle of the calender gruelling five-hour endurance trip. roll. It consists of an expand- The Ford. was put through its comb, 2 final spacing paces by Lance Walsh, long noted bar, and a presser roll, all mounted for his ingenuity in devising new on a horizontally adjustable car and exquisite tortures for testing riage. The expanding comb pro-cars. And South Africa affords vides a final width adjustment. unlimited possibilities in the way The final spacing bar is a round of unbroken trails, primitive steel bar on which has been cut a ground, sheerhills, deep guilies, screw thread of a pitch represent- sand, swamp, forest and bush. ing a number of ends desired in a "On one occasion," said Mr. finished fabric. The presser roll Walsh after the nerve-racking run, is a solid steel roll, very accurately "we would descend a 'gentle' grade machined and grounded. It proof one in four or five, the next vides means for pressing the sheet instant we would ascend an equal- of properly spaced cords Into aly steep gradient. Seldom had we skimmed coat on the middle calender four wheels on the ground." roll. The pressure adjustment is
run hand wheel operated.
The drying and heating unit faced drums revolving on roller consists of a stack of copper sur bearings. The sheet of cord passes over their surfaces and emerges in properly hot and dry stage with- out in the least degree having lost] attendant disturbance of the units uniformity of tension, perimental equipment the process formity of cord stretch. At least has been improved step by step frictioning can be carried on only until to-day we have available a by maintaining a very heavy ten- manufacturing unit for quality son with consequent loss of the most valuable characteristic of the control and production efficiency
cord, that is its ability to stretch. leaves little to be desired. It was
The present producing equip-ing realiseil from the very inception ment very effectively overcomes of the use of a multitwist cord of those difficulties. It con- in tyre carcasses that the practice sists of a creel, a tension unit, a of weaving the cords into a fabric drying and heating unit, a spac which contains a very light filler Ing unit, a four root calender, and thread was a makeshift, The ill-
A continuous windup. The cord er thread was not of any value in
is wound ön cones weighing the tyre. On the other hand it
twelve to fourteen pounds and has proved a distinct detriment in containing from 14.000 to 16,000 that, as wenk as it the constant
yards. The inside end of the flexing that a tyre carcass under- cord is allowed to hang free for goes in service causes it to chafe about twelve inches through the cords with resultant splicing the outside end of cone carcass failure. The presence of to the inside of another. This the filler thread is also objection-makes it possible to provide able in that it prevents the corda continuous supply. from lying flat. A woven cord fabric coated with rubber has a very light coating at that point where the cord crosses the filler thread. A considerable amount of ply separation in the finished tyre can be traced to this condi- tion.
J
The Process,
to
allow
The creel is so laid but that it has spindles for each end in the finished fabric. One of the spindles holds the cone from which the cord is running while
The sheets of cord after leaving the heating and drying unit passes through the expanding comb, under the spacing bar, one cord to a groove, around the pressure roll and the skim coat on the middle calender roll. The calender is of
What made the endurance all the more remarkable was that the truck was loaded to capacity with a ten and a quarter of sand ballast, a crew of six, provisions, spare gasoline, water, oil, and later, in addition to all this, three Zulu guides.
we
One thing which will live a its mate holds a second cone splica type having the fourth roll offsea long time in my memory," said Mr. The impracticability of woven ed to the first one. When a cone at the top. The offset and top Walsh, "is an occasion when cord fabric is also very clearly has run out it is immediately re- rolls form one skim coat on the top had to make a deviation to avoid shown by what is termed "buggi-placed by a full one which is roll while the middle and bottom a donga, or canyon. The truck was nesa." This is a slack condition spliced to the then running one. rolls form a skim on the middle put head on
at a goadly sized In portion of the width of the The eord, after leaving the cone. roll. It is equipped with conveyors sapling. The sapling simply die roof, which, with all the study is threaded through a tension de- from the warning mills which pre-appeared beneath the bonnet and given it by cottor mills, has never vice and through various guiding vides a continuous uniform feed our photographer murmured, 'Why heen eliminated. The fabric can thrend boards to a central collec- stock. Mill and calender roll were tanks invented"?" be used, but only by feeding (t) tar thread board. The tension into calenders with a very heavy device and all thread boards are tension on the cord in the remain-equipped with porcelain eyes to der of the width so that they will prevent any possibility of injury stretch, and allow some tension on to the cord. They are all arrang- the baggy portion. This results.ed so that at the point of leaving of course, in a tyre containing the collector thread board each cards having widely varying has been subjected to A very ability to stretch. It follows then. slight but absolutely uniform ten that those cords having least sion.
temperature indicators and record- ers with the result that the stock is constanly held at a proper and uniform plasticity.
The sheets of corda, after having been pressed on to the middle roll, is carried up on that roll to its bite with the top roll which, forces its skim into the other side of the (Continued at foot of next Column)
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"On another occasion," Mr. Walsh said, "we wandered around through mealie fields and bush, descending grades that would have turned the hair of most motorists where Bray, and ascending rises necks had to be craned to see over the radiator. But never did the Ford falter."
So steep was one down grade that besides taking the precaution of placing the ear.in low gear, the party put chains on the wheels. A descent towards the Umgent River almost proved disastrous. The party struck deep treacherous aand.
"In low gear," Mr. Walsh said, "the wheels turned slowly but surely, propelling the car through the soft sand into which our feet aank up to the ankles. Once or twice impossible places were struck and the truck sank almost up to its axles, but always it extricated itself."
To get out of the Umgeni River bed, the Ford had to take a one In four grade and part way up was confronted with a thick hedge. But, Mr. Walsh said, the truck never baulked, it was headed through the obstruction, levelled it and went chugging to the top.
"The Ford is a wonderful truck," Mr. Walsh concluded; "At the start of the journey it had seven gallons of fuel in the tank and in spite of all the low goar in the sand and
the rises. It finished up in Durban still with fuel in the tank.””
sheet. This operation is carried on under conditions which are ideal. Both coats are applied to the corde and, between the cords, to each other before the cords have lost their heat and before the first cont has lost its plasticity,
THE New
BUICK
Our first shipment of the 1931 Model Buick Straight Eight Motor Cars has just arrived. We cordially invite you to come in and inspect the Eight with BUICK'S Prestige you will then understand why more than 2,600,000 people have chosen Buicks again and again, BUICK HAS AGAIN BUILT A BETTER AUTOMOBILE. Why not let us take you for a drive in one of these new Buick Great Eights and let you see for yourself how much ́more Buick gives for less
money.
114" W.B. Buick Straight 8 Models 118" W.B. Buick Straight 8 Models 124" W.B.Buick Straight 8 Models 132" W.B. Balck Straight 8 Models
G$1,530 to G$1,655 G$1,820 to G$1,930 G$2,160 to G$2,195 G$2,165 to G$2,705
THE DRAGON MOTOR CAR CO., LTD
Telephone 30228.
33, WONG NEI CHUNG ROAD, HAPPY VALLEY.
WHEN BETTER AUTOMOBILES ARE BUILT...BUICK WILL BUILD THEM.
SOME POSERS.
Queries for Motor Cyclists.
.......
Under the heading "Puzzles for Your Pala," Motor Cycling gives a series of posera for motor-cyclists. Here are a fowi
Why do water-cooled engines; boil at high altitudes? (Because the lens the atmospheric pressure, the lower the boiling point.)
Why are motorcycle gears easier to change than those of a car? (Largely because the car gears are directly connected to the crank- shaft and run at engine speed.)
If a man were trying to ride 30 miles in an hour and averaged 20 m.p.h. for the first fifteen miles, what speed would he have to average for the next fifteen miles? (60 m.p.h.)
Why is a rider usually hurt less when he comes off at speed than when he has a fall when going. slowly? (Because, in the former case, he falls limp, like a drunken man, having no time to tauten bis muscles.)
Which moves at the highest average speed, the piston or the motorcycle? (The motorcycie, be- cause at 80 m.p.h., with a 3%-in. stroke, a 5 to 1 gear and a 28-in. wheel, the motorcycle travels 880 yds, in a minute and the piston travels 876 yds., or, during one re- volution of the rear wheel the motorcycle advances 82 Ins. and the piston moves up and down through 35 in.)
MOTOR CYCLISTS.
Must Behave When Joy Riding.
The Wind Up. After emerging from the calend er, the new rubberized fabric passes through a continuous auto- matic weight indicating and re- cording device and to the wind-up. The wind-up is so designed as to allow changing rolls while the calender la oporating at full speed. It is equipped with an electrically operated cutter which makes për« fectly straight cut across the fabric and an automatic device for feed- ing the fabric into the liners with- Members of motorcycling clubs out wrinkles.
Went whose road manners tend to bring The product of to-day's All-Cord their clubs into disrepute have Process equipment is beyond com- been given a sharp rap on the parison with woven cord fabric, no knuckles by “Carbon," the pioneer matter how carefully and expan-motor cyclist who contributes to sively "processed. Laboratory tests: Motor Cycling. He says Indicates an infinitely greater uni-Early last week I was progress- formity in number of cords per Ing at what I thought a fairly de- inch and space between cords is cent„pace down the King's Road controlled; absolutely. With the (which Charles II first made elimination of the frictioning opera: through: Chelsea as a short cat to tion it le poseíble to control total Hampton Court) when suddenly a rubber deposits within very close solo rider abot by me and almost limitadora Sistema immediately, cut round, the wrong The effectiveness of applying: side of a refuge, tearing off in the both coats-at-once is very clearly direction of Putney Bridge... My indicated by microscopic examina-- Sidecar passenger and I saw very tion Lot the finished fabrics. It is little of him except his rear mui- found that the rubber is driven so: guard, which was adorned with a completely Into the cords that it perfectly enormous club badge, thoroughly Salis in- oven the bell- never thought mach of the, cal twist spacing in the various cliьAY 'atranida Kun the cords alons
senger
BUYERS GUIDE
MOTOR CARS.
ARMSTRONG SIDDELEY.-- Hongkong Hotel Garage, Queen's
Road. Tel. 24759.
BUICK-The Dragon Motor Car Co., Ltd., 38, Wong Nel Chung
Road, Happy Valley. Tel. 30228.
CADILLAC.-Hongkong Hotel Garage, Queen's Road. Tel. 24759, CHEVROLET.-Hongkong Hotel Garage, Queen's Road. Tel.
24769.
FIAT MOTOR CAR-A Goeke & Co., China Bldg., 7th floor.
Tel. 22221.
MARQUETTE-The Dragon Motor Car Co., Ltd., 33, Wong "Nei
Chung Road, Happy Valley. Tel. 30228. MORRIS.-Hongkong Hotel Garage, Queen's Road. Tel. 24759, OLDSMOBILE-The Dragon Motor Car Co., Ltd., 38, Wong Nai
Chung Road, Happy Valley. Tel, 80228. ROLLS-ROYCE.—Hongkong Hotel Garage, Queen's Road. • Tel.
...24769.
STUDEBAKER--Hongkong Hotel Garage, Queen's Road,
Tel.*
24769.. WILLYS-KNIGHT & WHIPPET MOTOR CARS.—Gilman & Co.,
Ltd.; fa, Des Voeux Rd. C. Tel. 28011.
OUTBOARD MOTORS-Rudolf Wolff & Kew, $4 Quéen's Road
C. Tel. 22178,
MOTOR TRUCKS AND TRACTORS. CHEVROLET.-Hongkong Hotel Garage, Queen's Road.. Tel.
24759.
G.M.C.-The Dragon Motor Car Co., Ltd., 33, Wong Net Chung
Chung Road, Happy Valley. Tel. 80228. DODGE-South China Motor Car Co., 88, Des Voeux Road. C.
Tel. 25014,
J
.:
MORRIS-Hongkong Hotel Garage, Queen's Road. Tel. 24769. STUDEBAKER-Hongkong Hotel Garage, Queen's Road. Tel-
24750. WILLYS-KNIGHT & WHIPPET TRUCKS.--Gilman & Co., Ltd.,
48, Des Voeux Road C. Tel. 28011.
MOTOR CYCLES.
B.S.A.-The Sincere Co., Ltd., Des Voeux Road... Tet: 27767. NORTON The Sincere Co., Ltd., Des Voeux Road C., Tel.
27767.
MOTOR OILS.
:::、,',
GARGOYLE MOBILOIL-Vacuum Oil Company, King'a Bldg, SHELL-Asiatic Petroleum Co., (S.C.), Ltd., Asiatic Bldg.
KAO STYRES AND ACCESSORIES: ACCESSORIES—Hongkong Hotel, Garage, Bueen's Road. Tel. 1024769, ACCESSORIES. The Duro Motor Co., Nathan Road, Kowloon.
1 Tel, 16226.
FISK TYRES Gilman & Co., Ltd., da, Das Voeux Rd. C." Tel
280111
INDIA TYRES.-W. R. Loxley Cc.; York Bldga. Tel. 22285. MICHELIN TYRES —A, Gocke & Co, Chína Bldg, 7th floor.
Tel. 22221.
PRESTOLITE BATTERIES-Hongkong Hotel: Garage, · Queen's- A Road. Tel.: 24759.
WILLARD BATTERIES-Gljmán & Co., Ltd., 48, Des Voeux Ri.
PAC.Tal, 28011,
#good-club has
Buy Tat?with
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