US1339387A - Motorcycle - Google Patents

Description

E. V. HAMMOND.

MOTORCYCLE. I APPLICATION FILED NOV. 2!,1916- I 1,339,387, Patented May 11, 1920.

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X Kama @222 UNITED STATES PATENT OFFICE.

EDWARD VICTOR HAMMOND, OF BALI-1AM, LONDON, ENGLAND.

MOTORCYCLE.

Application filed November 21, 1916.

To all whom it may concern:

Be it known that I, EDWARD VICTOR HAM- MOND, a subject of the United Kingdom of Great Britain, residing at No. 88 Louisville road, Balham, in the city of London, county of Surrey, England, and Kingdom of Great Britain, have invented a new and use ful Motorcycle, of which the following is a specification.

The ob 'ect of this invention is to simplify and cheapen the production of motor cycles, or similar vehicles propelled by water cooled internal combustion engines, while at the same time affording a very low seating position for the rider, (and consequently a low center of gravity) and also affording that protection fromthe weather hitherto only found on motor cars.

With reference to the accompanying drawings, Figure 1 represents an elevation of the motor cycle, Fi 2 represents a plan of the base or chassis while Figs. 3, 41, 5, 6 and 7 represent enlarged views ofdetails of construction.

The principal feature of this invention is the use of the water outlet and inlet pipes from the engine to the radiator or cooling tank, to form the actual frame of the machine; or in other words, to utilize the tubular framework of the motor cycle, as water outlet and inletpipes from engineto radiator. In this invention the usual'form of radiator, either honeycomb or composed of layers or coils of tubing may be dispensed with, and a plain cylindrical tank a, Fig. 1, used in its stead. This tank may be cylindrical, rectangular, streamline, or of any other shape, and maybe cast in one piece, or formed in any other fashion most suitable to the manufacturer. The steering column Z2, Fig. 1, passes through the tank a,

which tank is preferably placed in the position shown in Fig. 1; in which position it forms the steering head of the bicycle in ad dition to fulfilling its function as a cooling tank. Radiating gills,such as are used. on air cooled petrol engine cylinders, may be placed or formed upon the tank if desired, to assist the cooling. Any other formof radiator or cooling vessel may be used if desired.

The water outlet pipe is shown at c, Fig.

1, and forms the ,top tube of the motorcycle frame. The water inlet pipe is shown at (Z, Fig. 1, and forms the bottom tube of the frame. The engine, shown at 6, Fig. 1, is

Specification of Letters Patent.

Patented Ma a, 1920.

Serial NO. 132,620.

preferably placed at the rear of the motor cycle and .is utilized as part of the framework of the motor cycle, as it takes the place of a vertical tube or stay. The engine 6, cooling tank a, and pipes o, and (Z, may be disposed in any other position or positions relative to each other than that shown in Fig. 1, if so desired. The whole frame is strengthened by a tension rod shown at f, Fig. 1, the tension of the rod being adjusted by the turnbuckle g, Fig. 1. The forward end of the tension rod is secured to a lug, or by other suitable means, to the tank a, and the rear end of the rod is secured to one holding down bolt of the engine 6, or other suitable anchorage. The engine 6, stands upon the platform It; this platform It, contains the hollow chamber '6'," which chamber is used as a silencer for the exhaust gases, and communicates with the'engine exhaust port by the exhaust pipe 7', Fig. 1. The hollow chamber has a detachable cover plate is, Fig. 1, to admit of ready access to the holding down bolts of the engine, and also cleaning out the silencer. Formed in one piece with the base plate h, is the lug Z, which lug holds a sliding bracket m. The lug and sliding bracket are shown in detail at Fig. 3 of the accompanying drawings. The drive from the engine to the rearwheel is by friction contact of a drivingpulley n, Fig. 1, Fig. 2, on the engine, with the tire of the rear wheel of the motor cycle. Owing to the tendency of the friction drive to slip when the roads are wet, the sliding bracket m is provided; which bracket holds the spindle or hub of the rear Wheel in the boss 0 Fig. 3; the spindle being secured by the set screw p, Fig. 8, or other suitable means. A flat facing, key, or other suitable contrivance may be used on the sliding bracket m, to prevent it turning about in the lug Z. Upon tightening up the nut 9, Fig. 1 and Fig. 3; the rear road wheel 1", Fig. 1 and Fig. 2; is drawn hard against the pulley n, thereby increasing the frictional force between road wheel and pulley, and diminishing the tendency to slip. The base plate 71., lug Z, and hollow chamber 2', are

being secured'to the top frame tube 0, by a clip t, Fig. 1. Steering is preferably controlled by a motor car type of steering wheel as shown at a, Fig. 1; but any form of tiller or handle bar may be used if desired.

-A substantial footboard or footplate is provided at 1), Fig. 1 and Fig. 2, which may be of wood, metal, or other material. In Fig. 1 the footboard is shown of wood, and is secured by bolts or other suitable means, to the forward end of the base plate It; and is supported by a metal strap, clip, or other means from any suitable point along the bottom tube d, or tank a, as shown at w, in Fig. 1. Side and front mud and wind shields to protect the feet and legs of the rider are represented by w, m 0 0,, in Fig. 1 and Fig. 2. These wind shields may be of wood or metal as desired. The front shield m is carried up on each side of the tank a, to meet the body wind screen y, which wind screen (to protect the body of the rider), may be of wood or metal, and either continuous with the front mud and wind screen 09 or formed in a separate piece as shown at 1 Fig. 1. This wind screen is surmount ed by a glass face screen a, in the fashion adopted in motor cars. The wind screen 3 is carried by a bracket a carried underneath the filler cap 6 Fig. 1, or by other suitable means. The cooling tank a, is filled at a suitable orifice 0 Fig. 1. V

A means of making a water-tight joint where the top and bottom tubes 0, and d, enter the water tank a, is shown in large sized detail in Figs. 4 and 5 of the accompanying drawings. In Fig. 1, bosses are provided on the tank a, as shown at d, and al, Fig. 1, which bosses are strengthened by the connecting rib 6 Fig. 1. I

A section through one of the bosses is shown at Fig. 4:; al being the boss, and 0, the top (or water outlet) tube.

A recess is formed in the boss 6Z1 as shown at f,, Fig. 4:; and into this recess is forced a ring 072,, of rubber or other suitable elastic material of larger outside diameter than the recess 71, and of smaller inside diameter than the tube 0, which ring, by pressing upon the sides of the recess f and also upon the tube 0, will, by reason of its compression, form a water-tight joint, unaffected by vibration. To hold the tube 0 in position, a bolt 9 is passed through the boss d at a suitable point shown on the line X. Y. in Fig. 4:, a transverse section on the line X. Y. being shown at Fig. 5. On the main boss al additional bosses h and 7& Fig. 5, are formed. These bosses are provided with recesses 2' i,, Fig. 5, into which recesses are forced. rings of rubber or other elastic material 7' 7' having precisely the same effect secured by welding, brazing, or' in any other suitable manner. In the lower end of the tubing, (which receives the spindle of the front roadwheel "9 there is formed a slot as shown at 0 Fig. 6. This slot receives the ends of the spindle (one on each side of the wheel) as shown at 0 Fig. 7 The spindle end engages with a slot in a plunger 10 Fig. 7 This plunger supports the lower end of a coiled spring 10 which spring is placed within the tube n As will now be clearly seen by reference to Fig. 7 of the accompanying drawings, shocks to the front road wheel g will be transmitted through the spindle 0 (which spindle is free to slide up and down the slot 0 in the tube 12,) to theplunger p whichwill in turn compress the spring p5, thus absorbing the road shock. The fork crown is shown at 7' Fig. 1, and Fig. 7 and a distance piece is shown at 1' Fig. 7 which distance piece is used for adjusting the spring 39 This distance piece can be an elongation of the crown 1- if desired.

WVith further regard to the water cooling, it may be mentioned that thermo-siphon, or natural circulation, is relied upon to circulate the cooling water, but a pump may be fitted if desired.

I claim- 1. In a motor cycle, a frame including'a tubular steering head, upper and lower tubular members connected to said head, and an engine having a water jacket in the angle between and connected to said tubular members, so that said water jacket forms afpornected to said tubular members, and a foot-1 board having its front end connected to said frame and its rear end secured to said base plate.

3. In a motor cycle, a frame including a steering head and upper and lower reach members attached thereto, an engine having a member attached to and connecting the rear ends of said reach members and also having a base plate, a rear Wheel having its axle mounted in said base plate, and a drive Wheel on the shaft of the engine and frictionally engaging said rear Wheel.

4:. In a motor cycle, a frame including a steering head and upper and lower reach members attached thereto, an engine having a member attached to and connecting the rear ends of said reach members and also having a base plate, a rear Wheel having its axle adjustably mounted in said base plate, and a drive Wheel on the shaft of the engine and frictionally engaging said rear Wheel.

haust muflling chamber, an exhaust pipe connecting the engine With said chamber,

and a rear Wheel having its axle mounted on said base plate.

EDWARD VICTOR HAMMOND.

Witnesses:

F. H. R. KEMSTEAD, G. A. STEPHENS.

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