US482090A - Fork for velocipedes - Google Patents

Description

(No Model.)

- e. KEER.

FORK POR VBLOUIPEDBS.

' Patented Sept. 6, 1892.

UNITED STATES PATENT OFFICE.

CYRUS KEHR, OF LAKESIDE, ILLINOIS.

FORK FOR VELOCIPEDES.

SPECIFICATION forming part of Letters Patent No. 482,090, dated September 6, 1892.

Application led January l1, 1892. Serial No. 417,749. (No model.)

To all whom t may concern/.-

Be it known that I, CYRUS KEHR, a citizen of the United States, residing at Lakeside, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Forks for Velocipedes; and I do hereby declare the followingto be a full, clear, and exact description of lthe 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 letters of reference marked thereon, which form a part of this specification.

The object of my invention is to produce a velocipede-fork which shall be light, as well as strong and economical in manufacture.

In the accompanying drawings, Figure l is a vertical section through the neck and the upper portion of the legs of the completedvv fork. Fig. 2 is a similar section of the crown of the fork detached from the legs. Fig. 3 is a similar section of the piece constituting the upper ends of the legs and the reinforcement for the crown. Fig. 4 shows the part illustrated in Fig. 3 before being bent. Fig. 5 is a section in line a b of Fig. l.

A is the crown. This is shown detached in Fig. 2 and combined with the legs and reinforcement in Fig. l.

A is the neck.

The outer face of each of the shoulders A2 of the crown extends to the substantially vertical portion of the legs, at which point there is on said crown a substantially horizontal downward-directed face A2. The lower face of the crown is concave and terminates at each side in a downward-directed edge A4. The faces A3 and the edges A4 are to meet, respectively, the faces B2 of the legs B and the upward-directed edgesB5 of Vthe reinforcing member, to be hereinafter described.

B is an integral arch composed of the tubular legs B and the reinforcing member B3. This arch is formed by taking a piece of metal tube and cutting out the upper half thereof at B4 through a linear distance equal to the length of the edge A4 between points opposite the faces A3 of the crown A. (See Fig. 4.) Thus the tube will continue to be a tube, excepting along B4, where it is a halftube, the concave or open portion being directed upward. At each end of the cutting B4 is a face B2, formed by the wall not cut away. The pipe is now bent downward at each side of the cutting B4 until the uncut portions of the pipe are nearly perpendicular and the arch is formed, as shown in Fig. 3, the bending being done on the half of the pipe next to the faces B2. The arch now consists of the legs B B and a-reinforcing member B2, integral with and connecting said legs, said reinforcing member being concave above and having the upward-directed edges B5a11d the faces B2 of the legs B being new directed upward and extending from the exterior of each leg to the middle thereof. The specific dimensions and shape of the several part-s of the arch are such as to cause the faces B2 to fit accurately upon the faces A3, while the edges B5 tit accurately upon the edges A4, when the crown and said arch are brought together, as indicated in Fig. l. After these edges are thus made to meet they are permanently brazed. The result is a light, graceful, and strong fork and one which is elastic at every point, so that strains resulting from jarring are not concentrated at any particular point. A reinforcing-tongue C may extend from each shoulder of the crown downward into and along the outer wall of the leg B', and such tongue may be brazed to said wall.

I claim as my inventionl. In a velocipede-fork, the combination of a crown A, which is concave beneath and has faces A3 and lateral down-directed edges A4, and an arch composed of the tubular legs B', having at their upper ends faces B2, meeting and brazed to the faces A3, and a reinforcing member B2, integral with said legs and concave, with-upward directed edges B5, meeting and brazed to the edges A4, substantially as shown and described.

2. In a velocipede-fork, the combination of the-crown A, concave beneath and having the lateral downward-directed edges A4, faces A2, and reinforcing-tongues C, and tubular legs B', having faces B2 meeting and brazed to the faces A3, and said tongues entering and In testimony whereoflafx my signature,in being brazed tothe outer walls of said legs, presence of 4two witnesses, this 5th day of and a. connecting member integral with said January, in the year 1892.

legs and concave above and having upward- CYRUS KEHR. 5 directed edges B5 meeting and brazed to the Witnesses:

edges A4 of the crown A, substantiallyas AMBROSE RISDON,'

shown and described. FRANK L. S'LEVILNS.`

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