US354777A - George d - Google Patents

Description

(No Model.) I

G. D. FERRIS.

- BIGYGLB. l No. 35.4.,777.` Patented Deo. 21, 1886.

wzness# Invent.-

NiTED STATES ATENT irren'.-

GEORGE D. FER-RIS, OF SPRINGFIELD, ILLINOIS.

BICYCLE.

SPECIFICATION forming part of Letters .Patent No. 354,777, dated December 21, 1886. Application filed August 28, 1886. Serial No. 212,067. (No model.)

To all whom t may concern:

Beit known that I, GEORGE D. FERRIs, a citizen of theUnited States, residing atSpring field, in the county of Sangamon and State of Illinois, have invented a new and useful Improvement in Bicycle-Vheels, of which thev following is a specification. Y

This invention has for its object to provide novel gearing for. revolving the propellingwheel of a bicycle; and it consists in the combination, with the arms comprising the yoke or fork of a bicycle, of two disks secured, respectively, to said arms, and each having an internal annular row of teeth, a sleeve journaled in the arms and carrying the propellingwheel, which travels on the surface to be traversed, a gear-wheel attached to each end of the sleeve, a shaft extending through the sleeve, two levers mounted, respectively, intermediate their ends on the ends of the shaft, a crank at one end of each lever, and a pin ion journaled on the other end of each lever, said pinions meshing with the gear-wheels on the sleeve and with the annular rows of teeth of the disks, whereby the rotation of the crank-levers with the shaft causes the pinions to be revolved by the toothed disks, and such pinions revolve the gear-wheels, sleeve, and driving-Wheel for propelling the bicycle at great speed.

The invention is illustrated in the accompanying drawings, in which Figure l is a side elevation of the driving-gear, showing the lower end portions of a bicycle fork or yoke and a part of the propelling-wheel; Fig. 2, a transverse sectional view through the shaft and sleeve at one sideof the propelling wheel, Fig. 3, a front elevation, and Fig. i a longitudinal sectional view through the fork or yoke.

In order to enable those skilled in the art to make and use my invention, I will now describey the same in detail, referring to the drawings, where- The letters A'indicate the arms comprising the fork or yoke of a bicycle, which in practice is usually provided with a post at its upper end journaled in the backbone or reach and connected with the steering handles. These parts, however, being of well-known construction, it is not deemed necessary to illustrate them in the drawings.

To the outside of each arm A is rigidly secured, by screwbolts or otherwise, a disk or ring, B, having an internal annular row of teeth, and in the arms is journaled a sleeve, E, carrying at each end a rigidly-attached gear-wheel, D, for which purpose the ends of the sleeve project beyond the outside of the arms. A shaft, S, extends through the sleeve and projects beyond the ends thereof, and on each projecting end is mounted a lever, L, such levers `being secured to the shaft intermediate their ends, so that each lever comprises two parts extending in opposite directionsfrom theshaft. To one end of each lever is journaled, by a suitable stud, a pinion, C, and to the oppositeend of each lever is secured a crank, T, the pinions meshing, respectively, with the gear-wheels on the sleeve and with the internal annular rows of teeth of the disks. By revolving the levers through the medium of their cranks the pinions C are caused to traverse the teeth of the disks B, and are thereby revolved on their axes, and such revolving movement is directly transmitted to the gear-wheels D, thus revolving the sleeve E and the propelling-wheel s, the hub F of which is secured to the sleeve. The propelling-wheel is thus caused to rotate on the surface to be traversed and the bicycle propelled with considerable speed without undue exertion.

I am aware of Letters Patent No. 293,081, and do not wish to be understood as claiming what is therein disclosed, as such is not my invention. l

Having thus described myinvention, what I l. rIhe combination, with the arms comprising the fork or yoke of a bicycle, of two internally-toothed disks secured, respectively, to said arms, a sleeve journaled in the arms and carrying the propelling wheel, Which travels on the surface to be traversed, a gearwheel attached to each end of t-he sleeve, to revolve therewith, a shaft extending through the sleeve, two levers mounted, respectively, intermediate their ends on the ends ofthe shaft, a crank at one end of each lever,'and a IOO pinion journaled on the opposite end of each each shaft and a pinion at the opposite end of lever, said pinions engaging the gear-wheels l each shaft, said pinions engaging the interand the internally-toothed disks to propel the nally-toothed disks and the gear-Wheels to re- 15 bicycle by the revolution of the crank-levers, volve the propelling-wheel by the revolution 5 substantially as described. of the crank-levers, substantially as described. 2. The combination of the two stationary In testimony whereof I have affixed my sigand internally-toothed disks, a sleeve carrying nature in the presence of two witnesses. a propelling-wheel, a gear-wheel secured to each end of the sleeve, to revolve therewith, a GEORGE D FERRIS' xo shaft extending through the sleeve, two levers Vitnesses:

mounted, respectively, intermediate their ends G. B. THORNBERRY, on the ends of the shaft, a crank at one end of l BENJAMIN F. CRoUsE.

Images