US593373A - Saddle-post and handle-bar adjusting mechanism - Google Patents

Description

(No Model.)

S. F. ESTELL. v SADDLE POST AND HANDLE BAR ADJUSTING MECHANISM.

Patented Nov. 9, 1897.

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SAMUEL F. ESTELL, OF CHICAGO, ILLINOIS.

SADDLE-POST AND HANDLE-BAR ADJUSTING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 593,373, dated November 9, 1897.

Application filed November 6, 1896. Serial No. 611,202. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL F. ESTELL, of Chicago, countyof Cook, and State of Illinois, have invented new and useful Improvements in Saddle-Post and Handle-Bar Adjusting Mechanism, of which the following is a full and complete description, reference being had to the accompanying drawings, which form a part of this specification.

The object of my invention is to provide such mechanism as will dispense with the wrench and the difficulties attending that method of adjustment, and that will insure ready and easy means of removal or change in position of the parts referred to and also insure permanency of position, and this in a comparatively inexpensive manner.

lVith reference to the drawings, Figure 1 is a section of the frame of a bicycle in perspective, showing the saddle-post with adjusting mechanism. Fig. 2 is a vertical section of Fig. 1. Fig. 3 is a transverse section through Fig. 1 on line so a: of Fig. 2. Fig. 4 is a vertical section of the head of a frame embracing the handle-bar and stem and adj usting mechanism.

In Figs. 1, 2, and 3, A represents the saddle-post, B the saddle-post tube, and O O the rear frame-braces. The ordinary mechanism in use for clamping the post is suitable, with but little preparation, for theapplication of my improvements.- As shown, the clamping post and bolt at the head of tubeB are of ordinary construction. To accommodate the posts to my improvements, I cut down from the top a slotted opening in the rear of tube B and corresponding in position to the space between the ears or lugs of the ordinary clamping device B. A cam-lever a of suitable thickness is mounted upon the (ordinarily) clamping-bolt b, the circular or eccentric portion of which is by reason of the slotted provision in the tube adapted to bear against post A. The eccentricity of cam a is such that a downward movement of post A tends to effect looking or fastening of the latter. To insure certain and ready action of the cam, I provide a spring d at the lower portion of its power end. To look the cam firmly against the post A, a screw 6, inserted through a threaded aperture in the arm of cam a, is employed. The screw, as apparent by contact of its end against tube B, (special provision for such contact, as shown, being made,) serves to force the power end of the cam outward and thereby insure such contact of cam and post as will prevent the latter from being lifted until released.

In reference to the application of my improvement to the hand-bar, as shown in Fig. 4, A represents the stem of the handle-bar, and B the headof the frame. A nut F is screwed upon the upper end of the steeringstem and has an upwardly-projecting flange f, which is open at the rearward side. An ordinary band-clamp E, of the same form as the clamp B, encircles the flange f and carries between its lugs the eccentric a,which is adapted to bear against the handle-bar stem A and bind it against the flange f. The form of the eccentric is the same as that shown in Figs. 1, 2, and 3, and the thumb-screw e reacts against the nut F. The post A, otherwise cylindrical, is shown faced adjacent the can]. for the accommodation of the latter, and in this example transversely channeled, as affording greater security against slipping. The plain face is, however, sufficient.

Having thus fully described my said invention, what I claim, and desire to secure by Letters Patent, is I 1. The combination with a tube and a post telescopically entering the tube, of an eccentric rotatably mounted to bear against the post to prevent its movement in one direction, and an adjustable stop to prevent the rotation of the eccentric in the opposite direction.

2. The combination with a tube and a post telescopically entering the tube, of an eccentric rotatably mounted to bear against the post to prevent its movement in one direction, a hand-lever projecting from the eccentric, a set-screw passing transversely through the lever and adapted to be turned forwardly so as to bear upon a fixed part when the eccentric is in engagement with the post.

3. In a post-adjusting mechanism for saddle or handle-bar, the combination with the tube, post and clamping mechanism, of a camlever and a spring-for actuating said cam-le- Ver, all substantially as and for the purpose set forth. r

4. The combination of post A, tube B and bolt 1), with cam a, screw e, and spring d, substantially as and for the purpose specified.

- SAMUEL F. ESTELL.

Witnesses:

GEO. D. KEEFER, W. S. EsTELL.

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