US465859A - Claude jolly - Google Patents

Description

G. JOLLY. VBLOGIPBDB.

(No Model.)

No. 465,859. Patented 1360,29, 1891.

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UNrTnD STATES APATENT OFFICE.

CLAUDE JOLLY, OF PARIS, FRANCE.

VELOCIPEDE.

SPECIFICATION forming part of Letters Patent No. 465,859, dated December 29, 1891.

Application lecl April 9, 1891.

To @ZZ whom t may concern:

Be it known that I, CLAUDE JOLLY, a citizen of the French Republic, residing at Paris, France, have invented certain new and useful Improvements in Velocipedes, of which the following is a full, clear, and exact description.

The object of my invention is to provide a velocipede in which the chain ordinarily used to communicatethe movement of the pedals to the back wheel is suppressed.

In the velocipedes now used the action of the motor-wheel is produced by means ol a chain and toothed wheels transmitting the rotary movementof the axles of the pedals to the motor-wheel. This manner of transmission presents drawbacks long since acknowledged, the principal one being the loosening of the chain, which after a certain length of time ends by completely refusing to work. Continual repair ot' the velocipede is now necessitated. IVith my new system of transmission (without the use of the chain) this drawback disappears entirely, and, moreover, thanks to the arrangement used, the speed of the velocipede can be augmented'quite considerably. In this new mode the pedals, instead ot having a continuous rotary movement, only have an alternate movement, and, as will be seen, the dead-point is suppressed. The change of this alternate movement to a circular one is accomplished by means of a sector and a toothed wheel.

To make the Working ot my apparatus understood, I will describe it in connection with the accompanying drawings.

In the drawings forminga part of this specification, Figure l shows a general elevation of a velocipede embodying my invention. Fig. 2 is a face view of the toothed wheel and the clutching and loosening device. Fig. 3 isa section of the same. Fig. 4 is a plan view of the mechanism for raising one pedal by the descent of the other.

By referring to the drawings it will be seen that the rods M N M Nare jointed on the opposite ends of the levers P O M P O M', bearing the pedals P P. These rods, which transmit the movement of the pedals to the levers N Q E N Q E', whose longest arms terminate in the form of toothed sectors, can slide in the pieces they join.

Serial No.3881250. (No model.)

The mechanism ot the two pedals being identical, I will only describe the working of.

one of them-the pedal P, for example. \Vhen 5 5 pressing on the pedal P, placed at the end of `the lever P O M, the lever is made to turn around its axle O, and the lever system M N Q makes the toothed sector E describe a circular arch. The toothed wheel A, placed at 6o the toothed wheel A is iixed'in an invariable Way on the axle D the Wheel R will be put in movement and the advancing will be done in a forward direction; but it is also evident thatin raising the same pedal P the sector E, actuated by the same lever system, will describe a circular arch similar to the preeed- 7o ing one, but in a contrary direction. ,There fore for the toothed wheel and the Wheel R, a movement in the opposite direction equal to the preceding forward movement, one

would therefore come back to the startingpoint. This last movement was therefore to be suppressed only to utilize the rstthat is, the downward-movement of the pedalthe only one which could 'be used.

To suppress the action of the toothed sector 8o during the ascending movement of the pedal P, I leave the toothed wheel loose on the axle of the motor-Wheel R, and I only make it solid with this axle at the moment the said pedal descends. of the toothed wheel A, Fig. 2, permits of this. This piece B is placed,with its system ot' small rollers C into the circular hollow of the toothed wheel A. 'Ihe teeth ZJ of the piece B, as well as the rollers C, can turn, gliding slightly in 9o the hollow ci of the wheel A. The two pieces, placed one in the other, are then mounted on the axle D. They are represented in Fig. l as following the face o of C, Fig. 3-that is to say, turned over face to face. These four rollers C are connected together by a thin band ol' steelf. The piece B is tight on the axleD of the wheel R. It is this piece which, by means of the rollers C, makes the wheel A solid-with the axle D orloose on this same axle. roo

In fact, when lowering the pedal P I have seen the wheel A, by engaging with the sector E, describe a circular arch, tending to make the wheel R take a circular movement in the same The piece B, placed in the hollow 8 5 direction; but the wheel A being loose on the axle D alone takes part in this movement, drawing with it by friction the rollers C, which, in gliding onthe descents cof the piece B, form corners between A and B, making the'm solid one with the other, and permitting the wheel A to draw piece B along, and consequently the axle D, on which this latter is fixed. The motor-Wheel then moves in a forward direction. Vhen the pedal P is raised, We have seen that the toothed wheel A describes a circular arch in opposite direction to the preceding one. The rollers C are then drawn along in the opposite direction. Through friction they come to lie in the hollows CZ of the piece B. The catching is done no more. The wheel A becomes loose on the axle and does not produce an opposite movement of the wheel R.

The mechanism just described is repeated for the second pedal. To raise one pedal while the other descends I use a system of two-toothed half-pinions G G', Fig. 4, mounted rigidly on the axles O O' of the levers of the pedals P P', and a small toothed wheel F, loose on an axle borne by the piece I-I, which supports the seat. These three small toothed pieces engage one another. Vhen one of the pedals P, for instance, goes down describing a circular arch around the axle O of its lever, the half-pinion G, fixed to this axle, is drawn in the same movement. This pinion then makes the toothed Wheel F turn, which ifself then makes tlie second pinion G turn in an opposite direction to that of pinion G. The pinion G', which is invariably united to the axle of the second pedal P',makes this latter remount to a distance equal to the descent of the other. These pedals Working alternately, it is evident that the movement will be con tinuous and the advancement will take place 4o in the same direction.

One perceives that by the arrangement de-` scribed above, wliich permits of the suppression of the dead-point existing with pedals with continuous rotary movement, one can augment Within certain limits the speed of the velocipede. Besides this advantage and the other coming from the suppression of the chains usually used, it must be noted that this system presents the facility of being applicable without large alterations to the existing velocipedes.

I claim- 1. In a velocipede, the combination, with the pedal-levers P O toothed wheel A, mounted on the rear axle, of the toothed wheel E, gearing with said Wheel A and operated by the levers connected with the pedal-levers and spur-wheels F G G', substantially as set forth.

2. In a velocipede, the combination, with the toothed wheels A and E, levers P O M P' O' M' and N Q E N' Q E', of means for preventing retrogression of the motor-Wheels, substantially as set forth. 3; In a velocipede, the combination, with the pedal-levers P O M I" O' M', mounted at the base of the seat-supporting rod, of intermeshing spur-wheels F G G', substantially as and for the purpose specified.

In testimony whereot` I have signed this specification in the presence of two subscribing witnesses.

CLAUDE JOLLY.

Witnesses:

RoBT. M. HooPER, JOSEPH ToURNivE.

M P' O' M" and the

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