US792056A - Clevis. - Google Patents

Description

No. 792,056. PATENTED JUNE 13, 1905. J. LEND.

CLEVIS:

APPLICATION FILED SEPT. 22, 1904.

Ufa C Patented June 13, 1905.

JOHN LEND, OF CHICAGO, ILLINOIS.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 792,056., dated June 13, 1905.

Application filed September 22 1904- Serial No. 225,520.

To (LZZ 111700127, it may concern:

Be it known that I, J OIIN LEND, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Clevises; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention pertains to improvements in clevises.

The object of the present invention is the improvement of this class of devices by providing a simple locking means therefor, whereby a quick transfer of the clevis can be made from one machine to another.

Another object of the invention is to provide a simple locking device for a clevis that will dispense with the usual bolt-and-nut arrangement usually employed.

Still another object is to provide a springheld locking-bolt for a clevis that cannot possibly become detached by accident.

Still another object of the present invention is to provide for a clevis a spring-held locking-pin that can readily and. quickly be withdrawn from its position and as easily replaced.

In the appended drawings, Figure 1 is a view of my clevis, showing its bolt seated in place. Fig. 2 is a view of the locking belt or pin removed from the clevis and showing its construction and fittings. Fig. 3 is a erspective view of a portion of the limb of the clevis wherein the locking-pin is designed to be held. Fig. 4 is a perspective view of the same reduced in size from that shown in Fig. 2 and showing a notch and groove therein for entrance of a lug on the pin shown in Fig. 2. Fig. 5 is also a perspective view of the said limb, showing the opposite end of the groove shown in Fig. 4.

The body of the clevis is indicated by the reference-letter A and provided, as in all devices of this class, with the substantially par allel limbs B and O, the former at its extremity being formed into an eye, being merely flattened. slightly and provided with an aperture E for the passage of the locking-pin F. This pin (shown in full in Fig. 2) comprises a straight member (indicated by said letter F) and a finger-piece, which is the eye G, the latter forming a shoulder with the pin, as at H, against which one end of a coil-spring I is adapted to bear, as shown in said Fig. 2. Formed with or secured in the pin a short distance from the eye H is a lug I, which limits the opening tendency of the spring, the use of said lug being explained presently.

The limb O of the clevis is enlarged at its extremity into the open head J, the opening K at the side thereof farthest removed from the limb B being of such size as to easily admit the shoulder H of the pin F. In Fig. 3 I have endeavored to illustrate the interior construction of the said head J, and in Figs. 4 and 5 the head is shown at two different angles in order to permit the observer to ascertain the location and arrangement of the retaining means for the pin F.

L is an inner annular wall of the same internal diameter as the hole E of the limb B and through which the pin F can easily pass, which, however, is shown very much larger in the drawings in order to better illustrate it. A groove M is formed in said wall L and oc cupies about one-half of the circumference of the head, as shown. At the right-hand end of the groove M, as shown in Fig. 4, a notch N is cut in the outer portion of the said wall L to open the said groove at that end The opposite end of the groove, Fig. 5, is enlarged at O to constitute a socket extending toward the outside of the head or toward the eye G of the pin F when the latter is in place, as shown in Fig. 1. The lug I of the pin is designed to extend beyond the latter, so as to enter the notch N and the groove M to hold the said pin in place. The manner of inserting the pin is as follows: The eye G is grasped in the fingers and inserted through both heads J and D. The lug I on reaching the wall L will of course stop the progress of the pin. Now by turning the pin around within the head the lug will come opposite the notch N, and by keeping an inward pres sure on the pin said lug will enter the notch and pass into the groove M. Now by turning the pin to the right the lug will follow around the said groove until it meets the end thereof and cannot move farther. Then the spring I, which has been under compression by being forced against the wall L, will force the pin outward to carry the lug into the said socket O, where said pin remains securely locked in place, and it will be seen that no amount of jarring or straining of any kind. will displace that member. The unlocking action is the same, but in the reverse order.

In presenting my invention I desire to state that I wish in no way to confine myself to the exact construction shown necessarily, since many changes may be made that will still be within the scope of the claims herewith presented.

I am not aware that a clevis has been heretofore used wherein a locking means has been employed other than the old bolt-and-nut arrangement common to all clevises, and I desire, therefore, to claim, broadly, means of the nature set forth for making a quick and positive adjustment of devices of the kind described.

Those having had experience in the use of clevises are well aware of the trouble and annoyance in having to continually remove and replace the nut and bolt whenever a change is made either from one machine to another or when changing to different holes on the same machine in getting various results asto draft. Knowing the trouble experienced in this direction, to say nothing of the losing of the various parts, I have devised the arrangement described.

I claim- 1. A clevis substantially of U form, there being a hole in each'extremity thereof, a pin for passing through both holes, a lug on said pin, a groove within one of the holes, there being a notch for entrance of the lug to said groove, there being also a socket into which said lug is adapted to enter and seat for looking purposes, and a spring for holding said lug in place within the socket all for the pur poses set forth.

2. A clevis substantially of U form, an opening through each extremity thereof in line with one another, a pin carried in said extremities with the said openings as described, a single lug projecting from the pin, there being a groove in the opening of one of the extremities of greater diameter than the said opening for entrance of said lug, there being a notch in said groove for entrance of the lug to the latter, there being also a socket forming part of the groove into which the lug is adapted to pass and a spring carried on the pin for carrying said lug into the socket by raising the pin in the direction of its length, said pin being thereby prevented from turning until depressed to carry the lug out of said notch.

3. A clevis substantially of U form, an opening through each extremity thereof in line with one another, a pin carried in. said extremities within the said openings as described, a single lug projecting from periphery of the pin, there being a groove in the opening of one of the extremities concentric with. the pin for the entrance of the said ing, a compression-spring carried by the pin, there being a single opening into said groove for the passage of the lug into the groove, the lug being entered by a movement of the pin in the direction of its length against the spring, there being also a seating-notch in the groove into which the lug is adapted to pass by the expansion. of the spring and consequent raising of the pin in the direction of its length, said lug when within the notch preventing movement of the pin except in the direction of its length.

In testimony whereof I ailix my signature in presence of two Witnesses.

his JOHN LEND. mark Witnesses I. KARUL F, V. H. HEosTRoM.

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