US302012A

US302012A - William mathbws

Info

Publication number: US302012A
Authority: US
Publication date: 1884-07-15
Anticipated expiration: 1901-07-15

Description

(lNo Model.) I

. W.. MATHEWS.

4 CLUTCH. No. 302,012. Patented-July 15, 1884.

NITED STATES PATENT OFFICE.

WILLIAM MATHnWs, on sAN Josn, CALIFORNIA, A'ssiefNon on ONE-HALF rro JOHN I. BURNHAM, on-sAMn rLAon.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 302,012, dated July 15, 1884.

Application led April 26, 1884. (No model.) i

To @ZZ whom, t 1v1/ty concern.: Be it known that I, WILLIAM MA'rHnWs, of

the Kingdom of Great Britain, residing at San J os, in the county of Santa Clara and State of California, have invented.- certain new and useful Improvements in Clutches, of which the following is a specification, reference being had therein to the accompanyiiig drawings.

This invention pertains to improvements in frictional clutches, which areiapplicable particularly to treadle-poweroperated mechanism or contrivances, and it has for its object to transmit motion or power by friction; and the invention consists of the combination of parts and .their construction, substantially as hereinafter fully set forth, and pointed out in the claims.

' In the accompanying drawings, Figure 1 is a sectional view, partly in side view, of my invention. Fig. 2 is a section taken on the line X X of Fig. l.

` In carrying out my invention I employ a cylindric casing, A, which is provided at its center with a sleeve fitted upon the drivingshaft B of the vehicle or contrivance it is designed to drive or revolve-as, for instance` a velocipede, bicycle, or other analogous vehicles, or any treadle-poweroperated contrivance or mechanism. Shrunk, keyed, or otherwise also secured upon said shaft is a collar, O, which, together with the plate I, also fitted upon said shaft against said collar and bolted to the outer face edge of said casing, is adapted to hold said casing upon the shaft so as to permit said casing to revolve thereon. Balland-socket or knuckle jointed or` pivoted to the collar C are two levers, D, one being disposed slightly below and the other slightly above a horizontal plane passingr centrally 4o through the shaft B, to enable the shoes E, piv- /oted or ball-and-socket-jointed to their outer ends, to alternately grip or impin ge upon its inner periphery, as the said arms with their shoes are operated to impart theL requisite rotary movement to said casing. The levers D are each suitably supported in position by a spring, H, connected to a standard, G, one being securedy to the shaft, collar, lor box C and the other to the lever, whereby, also, as the 5o 4strap J, which is fastened to and carried nearly around said casing and connected to the treadle K, is pulled downward or uncoiled from said K casing by exerting downward pressure upon the foot-piece E of said treadle, accordinglyv revolving in one direction said casing, said leversl will be caused to yield', and thus prevent their shoes from resisting the action of ksaid casing in that direction of its movements. Immediately, however, upon'the removal of y said'pressure from the treadle (the casing in 6o practice being acted upon by the recoil of a spring, not here shown) the reflexing of the levers under the action of their springs will `cause the thrusting and impingement of their shoes upon the inner periphery of the casing 6 5 and cause them to partake of the movement of the casing, which will of necessity be transand the possibility of the failure of engagement of the parts as is experienced in the jumping a tooth by the pawl with the use of the latter mechanism, rendering the same unreliable. y

Having thus fully described my invention, 8o what I claim, and desire -to 'secure by Letters Patent, is-

c l. The combination ofthe cylindric casing A, shaft B, collar C, lever D, having shoes E, springs I-I, connecting-standards G, strap'J, 85 and treadle K, substantially as shown, and for I the purpose described.

2. In a friction-clutch, the casing having the partially-coiled band connected to the treadle, said casing being secured upon the 9o shaft, in combination with the spring-levers carrying the shoes impinging upon the casing, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses. v

WILLIAM MAfrHnWs.-

Witnesses:

J. E. BROWN, Y C. O. REDMOND.