US740156A - Bicycle. - Google Patents

Description

No. 740,156. PATENTED SEPT. 29, 1903. A. MENDENHALL.

BICYCLE.

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U ITED S'rlrrns i atented september 29, 1903.

PATENT OFFICE.

AMOS MENDENHALL, OF UNIONPORT, INDIANA, ASSIGNOR OF ONE-HALF TO JAS. M. BEST, OF VVINCHESTER,.INDIANA, AND E. T. GRIFFITH, OF

MUNOIE, INDIANA.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 740,156, dated September 29, 1903,

Application filed Tune 1, 1901. Serial No. 62,804. (No model.) I

To @ZZ whom it may concern.-

Be it known that I, AMOS MENDENHALL, a citizen of the United States,residing at Unionport, in the county of Randolph and State of Indiana, have invented certain new and useful Improvements in Bicycles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in propelling mechanisms for bicycles and similar vehicles; and it consists in the peculiar construction and combination of devices hereinafter described and claimed.

In the accompanying drawings, Figure lis a side elevation of a bicycle propelling-gear embodying my improvements with parts broken away to disclose subja-cent constructions. Fig. 2 is a transverse sectional view of the same. V

A is the hanger of a bicycle-frame, and B is the seat-post. The pedal-shaft Chas its bearin gs in the hanger, and shells or outer casings D, forming parts of friction-clutches, are secured to the shaft on opposite sides of the hanger by keys E; The chain-wheel F is shown secured to one of the said outer casings. On the end portions of the shaft, revoluble thereon and disposed within the cylindrical recesses of the casings D, are cam elements G, each of which is connected to and operated by a pedal-lever II. Nuts N O, screwed on studs at the ends of the shaft, retain the cam elements and pedal-levers thereon. Each cam element is formed with peripheral tangential cam faces d, between which and the opposing inner annular faces of the casings D are spaces in which are antifrict ion-rollers K. Covers L, here shown as securedon the outer faces of the casings D by means of screws, retain the said rollers in place.

It will be understood that as each pedaldirection.

lever is depressed the cam element G connected thereto moves with it through a partial rotation, and the tangential cam-faces J cause the rollers K to move outwardly and frictionally engage the annular inner side of the casing D, and thereby also move the latter in the same direction. To each lever H is attached a spring P to move the lever in the reverse Fig. l. The same is a coiled retractile spring and is contained in a tubularhousin g element M, that is attached to the seat-post 13..

' From the foregoing description, taken in One of these springs is shown in I connection with the accompanying drawings,

the construction and operation of the invention will be readily understood Without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

I claim In a bicycle, the combination of a hearing, a shaft mounted therein, a casing fast to the shaft and having a cylindrical recess, a gear- Wheel also revolnhle with the shaft, a lever loosely mounted on the shaft, a cam element movable with and by the lever, disposed in therecess of the casing, and having peripheral tangential cam-faces and revoluble and 'indepeudentlymovable anti friction elements

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