US439771A - Clevis - Google Patents

Description

(No Model.)

P. BROWN.

GLEVIS.

No. 439,771. Patented Nov. 4, 1890.

551 GHQ 644411 UNITED STATES PATENT OFFICE.

PERRY BROWN, OF LOUISVILLE, KENTUCKY.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 439,771, dated November 4, 1890.

Application filed December '7, 1889. Serial No. 332,868. (No model.)

To alt whom it may concern:

Be it known that I, PERRY BROWN, a citizen of the United States, residing at Louisvllle, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Olevises, of which the following is a specification, reference being had therein to the accompanying drawings.

ThlS improvement is designed to cheapen the manufacture of clevises; and the invention consists in the peculiar construction and combination of parts, hereinafter m ore particularly described and then definitely claimed.

Heretofore it has been the general practice to fasten clevises to plow beams, &c., by means of a screw-bolt whose head was generally in the form of a wrench, so that it might be used for a twofold purpose of a bolt and a wrench. It has been found that the labor in- Volved 1n cutting the thread on the bolt and the corresponding thread in the clevis is an item that adds much to the cost of the completed article, and where they are made by the ton, as clevises now are, the cost of these operations becomes a serious item, especially when it is considered that both clevis and bolt have to be transferred from the foundry where they are cast to a machine-shop to have the threads out. To do away with this costis the object of my invention, which is fully illustrated in the accompanying drawings, in Which- Figure 1 is a side view of a clevis provided with my invention. Fig. 2 is a bottom plan of the same. Figs. 3, 4, and 5 are modifications of the bolt or pin used therewith.

Referring now to the details of the drawings, A represents the clevis, which may be of any approved form, but is provided at its under side with a notched incline a, and has peculiarly-shaped holes a, for a purpose hereinafter explained. Through this clevis is set the pin B, having a lug b projecting from one side thereof, which lug readily passes through the hole a, the latter being made of such shape as to admit the passage of said lug, as will be plainly seen on examining the drawings. To securely fasten the clevis, it is only necessary to turn the pin slightly in the direction of the arrow, when the lug will begin to press on the incline, and thus tightly fasten the clevis to the beam 0. The notches on the incline will prevent the pin turning backward, and thus there is no chance of the parts becoming unfastened. By this construction no fitting whatever is required, as the holes may be cast in the clevis and the lug cast on the pin without any extra cost whatever, and thus a large amount of labor in the aggregate saved that will effect a great saving in the cost of manufacture of clevises.

Instead of the lugbein g cast 011 the pin, I may slot the lower end of the same and set a latch D therein, pivoted in the pin at d, and so arranged that it may be closed in, as shown in dotted lines, in which case the hole in the clevis and beam maybe of the ordinary round form, for the pin with the latch closed in will readily pass through such hole, and when the latch is below the bottom of the clevis it will drop out, as shown in full lines, and then will act on the incline a in the same manner as the fixed lug and will be an equivalent therefor; or a hole may be cast in the lower end of the pin and a cotter set in it, as shown in Fig. 4, the ends of which might bear against two inclines cast on the lower end of the clevis; or instead of the incline being on the bottom of the clevis it may be on the top and the lug formed thereon or form part of the head, as shown in Fig. 5. In this case the pin may either have a latch in its lower end, as in Fig. 3, or a hole cast therein to receive a cotter, as in Fig. 4. Each of these modifications Iconsider as equivalent, in some respects, to my lug, and Where I refer to a lug in the following claims I mean to include each ofthese constructions, except where specially indicated, as a lug formed integral with a pin.

I am aware that various plans have been proposed for dispensing with cutting the threads on clevis-pins; but I consider my plan as very superior to anything heretofore proposed, inasmuch as by my construction much greater strength is attained, and there is no likelihood of the pin turning around and thus becoming loose.

What I claim as new is- 1. A clevis having eyes for the passage of a pin, and one of said eyes surrounded with an incline having notches of gradually-increasing height, in combination with apin passing through said eyes and having a lug engaging gated holes a, of a pin B, havinga lug formed with the notches in said incline to prevent integral therewith and coacting with the inthe accidental loosening of said pin, substancline a, all substantially as described.

tially as described. In testimony whereof I affix my signature, in 15 5 2. The combination, with a clevis havinga presence of two witnesses, this 3d day of Sepnotched incline a on its outer face and elontember, 1889.

gated holes a, of a pin B, having a lug 1), con- T structed to pass through said holes a and act PERRY on the inclines a, substantially as described. Witnesses:

l0 3. The combination, with a clevis havinga ALEX. S. STEUART,

notched incline a on its outer face and elon- THOS. E. ROBERTSON.

Images