US814545A - Clutch. - Google Patents

Description

PATENTED MAR. 6, 1906.

C. G. KEYSER.

CLUTCH.

APPLICATION Hum r2113, 1905.

To all whom it may concern:.

UNITED STATEs PATENT onnron.

CHARLES o. iKEYSER, OF NEWPORT NEWS, VIRGINIA.

CLUTCH.

Specification of Letters Patent. Application filed February 13, 1905. Serial No. 245,458.

Patented March '6 1906.

Be it known that I, CHARLES C. KEYSER, a citizen of the United States, residing at New I port News, in the county ofWarwick and State of Virginia, have invented certain new and useful Improvements in Clutches; and I do declare the following to be a full, clear, and

' exact description of the invention, such. as

will enable othersskilled in the art to which it appertainsto make-and use the same.

This invention'relates to clutches of that A character designed to be attached to the rear coaster-brakehub of chain-driven motor-cycles; and one of the principal objects of the same is to provide simple and efficient means for connecting and disconnecting the runninggear to and from the motor in, order that the motor may be permitted to run with out turning the rear wheel.

Another object is-to provide a device of this character which shall be comparatively simple in construction, offew parts, and

which may be quickly operated to connect and disconnect therunning-gear fromthe power.

These objects are attained by means of the construction illustrated in the accompanying" drawings, in which 3 Figure 1 1s a central vertical sect on of a coaster-brake hub having my improved throw-off device connected thereto. Fig. 2

- is a plan view of a tooth-disk. Fig. 3 1s a similar view of a movable tooth-disk; Fig. 4 is a plan View of the sprocket-wheel. Fig. 5 is a plan view of the friction-disk, and Fig. 6

.. is a detail sectional view of a portion, of the same. I

Referring to the drawings'for a better de scription of my invention, the numeral 1 deslgnates a friction-disk having an inclined periphery 2 and comprises the outer member and the inner member 3, said two members being fitted together and the member 3 provided with a screw-threaded hub 4:. The two members of the disk are at suitable inter- 'vals provided with cut-away portions to accommodate springs 5, and the ends 6 and '7 of the two members are extended laterally to form abutments for the ends of the springs. A headed bolt Sserves to hold the two members together. The purpose of the springs is to take up or absorb the shock caused bythe sudden movement of the' clutch-disk against its friction-surface, which causes jerking of the chain, and each explosion of the motor is absorbed by the springs instead of the fricposite side said sprocket-wheel is provided with a ball-raceway 13, in which are steel balls to reduce friction to a minimum. A movable tooth-disk, which forms a wed e be tween the sprocket-wheel and the rlgid y-secured wedge-disk; is provided with a re istering ball-raceway 14 and a projecting ug or periphery rim which fits against the outer side ofthe sprocket-wheel and may have a washer 40, of felt'or other suitable material, to excludedust, dirt, &c. The teeth or wedges 16, any suitable number of which maybe used,

have inclined'faces, and at the upper portion of this disk an arm a is secured to or formed on the wedge-disk. This arm is connected by a suitable lever .or handle which extends to within the reach of the driver. disk'17, which is provided with o posite arranged teeth 1-8, is designed to e rigid y attached, by means of the arm 19,to anysuitable portion of the frame of the cycle. The operation of 'm invention may be de' scribed as follows: W en it is desired to con-- neotv the running-gear to the motor Without stopping the motor, the lever connected -tothe arm c is operated to turn the wedge-disk, and thus move the sprocket-wheel inward until the inclined frictionfaces come into contact, at which time the springs 5 are compressed to relieve the parts of sudden strain Thewedgefor jars. An opposite movement of the lever of' cour'se disconnects the sprocket wheel,

from the friction disk.

.Various changes in the form, proportion, and'theminor details of construction maybe resorted'to without departing from the prin'- ciple or sacrificing any of the advantages of,

this invention.

what I claim as new, and desire to secureby Letters Patent, is

' -1. In a friction throw-BE for motor-cycles,

a friction-disk adapted to be secured to the rear hub of the vehicle-and "comprisin a rigid disk and a movable disk, said two disks I 1 1o Having thus fully described my invention,

bein connected byaseries of cushion-springs, a b'a -be aring between said disks, a sprocketwheel having a recess to receive the frictiondisk and a friction-surface, a movable wedgedisk, ball bearin s between the s rocketwheel and the Wedgedisk and a ri i wedgedisk secured to the frame of the ve hicle, 'su-b stantially as described. I

2. The herein described friction device comgrising the two members 1 3, one member eing secured rigidly to a hub and the other member adapted to move thereon, intermediate curved springs between the two members, the ends of the springs bearing against lugs on the members, ball-bearings between thommber's, a sprocket-wheel rovid'ed with a recess to accommodate the iction-disk and a friction-surface, a rigid wedgeand a movable wedge-disk between the disk sprobket-wheel and the movable wedge-disk, substantially as described.

Intestimony whereof I have hereunto set my hand in presence of two subs'cribing witnesses. 1 1 CHARLES C. KEYSEB'. Witnesses: v

' C; A'. Lmneolm,

S. BLANToN.

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