US592745A

US592745A - James samuel foley

Info

Publication number: US592745A
Authority: US
Publication date: 1897-10-26
Anticipated expiration: 1914-10-26

Description

(No Model.) 2 Sheets-Sheet 1.

J. S. FOLEY. BICYCLE BRAKE.

Patented Oct. 26

Mwzmrron WITNESSES (NoModeL) v 2 SheetsSheet 2.

J. S. FOLEY. BICYCLE BRAKE.

No. 592,745. Patented 001;. 26,1897.

INVENTOR UNITED STATES PATENT OFFICE.

JAMES SAMUEL FOLEY, OF WEST BROMWICH, ENGLAND.

BICYCLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 592,745, dated October 26, 1897. Application filed February 13, 1897. Serial No. 623,258. (No model.) Patented in England July 8, 1897, No. 15,093.

To all whom it may concern:

Be it known that I, J AMES SAMUEL FOLEY, engineer, a subject of the Queen of Great Britain, residing at High Street,'West Bromwich, in the county of Stafford, England, have invented certain new and useful Improvements in Cycle-Brakes, of which the following is a specification, and for which I have obtained Letters Patent of Great Britain, dated the 8th day of July, 1897, No. 15,093.

This invention relates to brakes principally for chain-driven velocipedes brought into operation (for retarding the progressive movement of a machine) through the medium of the drive-chain by the act of back-pedaling; and it consists in providing at one end of the stationary spindle of a back wheel-hub or upon the end of the barrel ofabottom bracket or other suitable part of a cycle a fixed drum or casing, against the inside of which a springband is expanded when the drive-chain, by reason of the rider back-pedaling, exerts a pull upon the chain-wheels in the contrary direction to that exerted in ordinary forward driving.

When my invention is applied to the back hub of a cycle, the casing or drum is secured to the spindle end, as aforesaid, while the ends of the band-brake are respectively in connection with lugs or the like, one of which is carried on the outer face of a chain -wheel mounted so as to turn on the end of the hub, and the other is fixed upon the hub end itself, the arrangement being such that the ordinary pull of the chain in forward driving brings the lugs on chain-wheel and hub together or into abutment, but when a rider sets up a back-pedaling action the chain tends to pull the chain-wheel around in the reverse direction, which separates the lugs and increases the distance between the ends of the-bandbrake, whose diameter is thus slightly increased and its outer periphery brought into braking contact with the inner periphery of the drum. Hence the motion of the machine is retarded.

Figure l of the accompanying drawings represents, partly in longitudinal vertical section and partly in elevation, a cycle-brake constructed according to my invention and applied to a back wheel-hub. The said view shows the positions which the parts of the brake and the drive-chain indicated by the dotted lines take when the brake is in action. Fig. 2 is alike view as Fig. 1, but with the brake off and the parts and chain shown in the position they normally occupy. Fig. 3 is a transverse vertical section upon the dotted line on, Fig. 2, of the chain-wheel end of ahub and the brake fitted thereto. Fig. 4 is an elevation of Fig. 3, but with the casing, spindle, and brake-band removed. Fig. 5 is an elevation and a vertical section on the dotted line 00 of the brake-band separately. Fig. 6 is a vertical section of the drum orcasing separately, and Fig. 7 is an inside elevation thereof. Fig. 8 represents an elevation of the brake in position upon a machine. Fig. 9 is an elevation and section of the chain-wheel separately, and Fig. 10 is a front elevation and section of the ring separately.

The same letters of reference indicate corresponding parts in the several figures of the drawings.

aisthe hub,havingach upon thehead a thereof. 'lhe head of the hub is provided with a peripheral collar or flange a against which the inner side of the chain-wheel rests. The outer end of the head a, is externally screw-threaded, as at a and upon this threaded portion is screwed a collar or ring 0, whereby the chain-wheel is confined in position between the collar or flange a and the collar 0 rin The collar or ring is locked to the head of the hub by screws 0. The chain-wheel is loosely mounted on the hub, so that it is susceptible of turning thereupon. The collar or ring 0 carries upon or has made fast to it a lug or stop 0 .coming againstthe stop b on the chain-wheel and forming the thrust-bearing which rotates the driving-wheel on forward-pedaling.

d is a spring band-brake, the one end cl of which is made to abut an outwardly-projecting shoulder on lug or stop I) on the chain-wheel, and the other end d abuts an outwardly-projecting shoulder on the lug c on the ring 0, revolving with the hub, While the outer periphery d is adapted to come into frictional contact with the opposed and inner surface e of the brake drum or casing e, the central boss e of which is screwed uponthe part f of the stationary hub-spindlef, whose extreme outer ends f are also threaded to take the nuts g, which secure both the hub and the brake-casing to the slotted jaws h of the back forks 7L of a machine.

6 is a stud or pin on the outside of the brake-casing adapted to take into a hole 7L2 in the said jaws h as an additional security.

Assuming that a bicycle is being driven in the ordinary way through chain-gear by forward-pedaling, then the thrust-bearing lugs b and 0 come in contact and the chain-wheel and hub rotate together; but supposing a rider wishes from any reason to apply the brake he back-pedals, and the force thus exerted straightens the sagging or lower part of the chain. This momentarily checks the rate of rotation of the chain-wheel, but has no immediate effect upon the speed at which the hub rotates. so that the hub runs on a little in advance of the wheel, which movement separates the lugs to a slight degree and increases the distance between the ends of the band-brake, which is thus expanded against the inner periphery of the drum, setting up a braking action and retarding the forward motion of the machine to an extent proportional to the force exerted in backpedaling and immediately the ordinary action is resumed the parts resume their normal positions.

The application of my invention to the front chain-wheel and other parts of cycles differs in 110 essential respect from its application to a back wheel, as herein described.

Having fully described my invention, what I desire to claim and secure by Letters Patent is The combination of a hub a havinga head a" provided with a collar or flange a? and an externally-sorew-threaded portion a at its outer end, a chain-wheel Z) loosely mounted on said hub,bearing against said collar or flange and having a lateral abutment 11 a collar or ring 0 screwed upon the outer end of the hub-head to retain the chain-wheel in position thereupon and having a lateral abutment a a fixed brake drum or casing e inclosing the collar or ring, and a spring brakeband following the contour of the drum or casing and having its ends engaged, respectively, with the said abutments on the collar or ring and chain-wheel, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JAMES SAMUEL FOLEY.

\Vitnesses:

ARTHUR T. SADDLER, \VILLIAM FRY LONG.