US543087A - Clevis - Google Patents

Description

(No Model.) v

- H. L. FERRIS.

GLE VIS.

No. 543,087. Patented July 23, 1895.

UNITED STATES -ATENT Enron. 5

CLEVIS.

SFECIFIGATION forming part of Letters Patent No. 543,087, dated July 23, 1895.

Application filed May 6, 1895. Serial No. 548,259- (No model.)

Zo all whom it may concern:

Be it known that I, HENRY L. Fnanrs, a citizen of the United States of America, residing at Harvard, in the county of McHenry and State of Illinois, have invented certain new and usefulImprovements in Glevises, of which the following is a specification.

My invention relates to improvements in clevises, its object beingto provide a clevis with a readily insertible and detachable pin secured against accidental displacement when in working position.

The invention is fully described and explained in this specification and shown in the accompanying drawings, in. which- Figure 1 is a side elevation of a clevis embodying my invention, the clevis-pin and the lock which secures it in place being in the working relation to the clevis. Fig. 2 is a similar view showing the locking device in a different position. Fig. 3 is a bottom plan of the clevis-pin and the part immediately surrounding it. Fig. at is atransverse vertical section through the line 4 4, Fig. 1. Fig. 5 is a top plan of the clevis-pin, the locking device, and the clevis contiguous thereto.

In the views, A A are the upper and lower members, respectively, of a clevis'of the usual approximately-U-shaped form, the upper member being formed near its end with a cylindrical hole and the lower member being formed with a correspondingly-placed noncircular opening a, as shown in Fig. 3. preferably-cylindrical pin B is adapted to pass through the opening in the upper member A, andhas at its lower end a neck b and a head I) of a cross-section adapting it to pass through the opening in themember A when in proper angular relation thereto, but to prevent removal of through a suitable angle after being'passed through the opening. The neck I) may be of a length equal to the thickness of the lower member A at the point where the pin passes through it, but I prefer to make it shorter and to form in the upper face of the lower member a socket adapted to receive the end of the main portion of the pin B, as shown in Fig. 4. The upper end of the pin B is preferably formed with a head B, having its sides fiatened, as shown in Figs. 1 and 5, and a lockinglever C is pivoted to the head, the lever bethe pin when rotated ing provided with terminal jaws C C embracing the head and connected by a transverse pin 0 passing through the head and preferably integral with the jaws, as indicated in Fig. 4:. Each of the jaws of theleveris acam adapted to lie flat upon the upper surface of themember A when all the parts are in working relation, as shown in Fig. l, the two members A A being then in their normal relation to each other and preferably exerting no pressure upon the jaws O. The free end of the lever which lies along the upper member A of the clevis may, however, be swung upward about the pivot c as a center, thereby swinging the cam-shaped ends of the jaws C downward to the position illustrated in Fig. 2, the effect of this press the end of the member A downward or toward the member A. The eccentricity of the cams is such that they may be rotated in the manner described withoutspringing the members A A beyond their limit of elasticity, and the lever C may therefore be readily swung through an angle of about one hundred and eighty degrees from the position shown inFig. 1.

When all the parts are in the relations illustrated in Fig. 1, the head I) at the lower end of the pin B is approximately at right angles to the opening a in the member A, but after the lever O has been swung about one hundred and eighty degrees from its normal position the pin B may be rotated ninety degrees, thereby bringing the head 19 into a suitable position forlifting it upward through the opening a. The whole pin may then be drawnrupward through the opening in the member A and thereby released from the clevis.

The upper face of the member A is formed with a Inga adapted to lie in a suitable slot in the lever 0 when the latter is in its normal position and thus prevent lateral oscillation of the lever and rotation of the pin. The lever is preferably formed near its free end with a projecting-lug c for convenient manipulation of the lever when in its locked position.

The transverse pin 0, connecting the lever O and pin B, is, as already stated, preferably integral with the jaws O O, the two parts being cast together to form a swivel-joint in movement being to' the method common in foundry practice. The pin may, however, if desired, be a separate piece inserted when the jaws are in proper relation to the pin.

Having now described and explained my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a clevis of suitable form having in its ends corresponding openings approximately in the same line, of a pin adapted to pass through one of said openings and having at one end a neck and a head adapted to pass through the other ofsaid openings when in suitable angular relation thereto and alever pivoted nearone end to the opposite end of said pin and adapted to be oscillated in the plane of the length of the pin, the pivoted end of the leverbeing formed with a cam substantially as set forth whereby the oscillation of the lever from its normal position may spring the members of the clevis toward each other.

2, The combination with the clevis having the members, A, A, formed with openings substantially as described, of the pin, 13, having at one end the non-circular head, I), and the lever, C, pivoted to the opposite end of the pin and formed with cams adapted to resist oscillation of the lever; substantially as shown and described.

3. The combination with the clevis having the members, A, A, formedv with openings substantially as shown and described, of the pin, B, having the neck, I), and head, I), and the lever, 0, connected to the pin, B, by a transverse pivot, the clevis and the lever being formed with co-acting parts adapted when in the proper position to engage each other and prevent oscillation of the lever about the axis of the pin; substantially as described.

HENRY L. FERRIS.

Vitnessesz LEWIS P. CARD, Guns 0. SHERNEY.

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