US393303A

US393303A - Half to john s

Info

Publication number: US393303A
Authority: US
Publication date: 1888-11-20
Anticipated expiration: 1905-11-20

Description

(No Model.)

- P. H. HARVEY.

NUT LOOK.

Patented Nov. 20, 1888.

w W 3 f w m .IINITED STATES PATENT OFF CE.

FRANCIS H. HARVEY, OF BATON ROUGE, LOUISIANA, ASSIGNOR OF ONE- HALE TO JOHN S. PEARCE, OF SAME PLACE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent N 0. 393.303. dated November 20, 1888.

Application filed August 4, 1888. Serial No. 281,925.

To aZZ whom, it may concern:

Be it known that I, FRANCIS H. HARVEY, of Baton Rouge, in the parish of East Baton Rouge and State of Louisiana, have invented a new and useful Improvement in Nut-Locks; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention is an improved device for looking nuts upon bolts to prevent their loosening, and is designed particularly for use upon railroads where the nuts securing the fish-plates to the rails are likely to become loose owing to the jarring caused by passing trains.

Many devices have been heretofore patented for the purpose above noted, but all are more or less objectionable, owing to cost of manufacture and lack of efficiency in operation; but my invention has for its object to provide a device which can be manufactured very cheaply, and which shall be very effective in accomplishing the desired result.

My invention therefore consists of the various details of construction whereby I am enabled to carry out my invention, all as hereinafter fully described, and specifically claimed.

In the accompanying drawings, Figure 1 is a perspective view of two adjoining rails with my improved nut-lock in place. Fig. 2 is a plan View of the locking device before it is placed in position.

In the drawings, the rails are represented at A A, connected by fish-plates B, and the bolts joining the plates to the rails are shown at a and the nuts for the same at b. Myimproved locking device is represented at 0. It is stamped out of sheet metal in the form shown in Fig. 2, with extensions on all four sides, the longitudinal portions being marked 0 c and the (No model.)

transverse portions (1 d. The portions 0 c are in width about equal to that of the fish-plate, and have holes a e at suitable distances apart, through which the bolts a pass. One of the transverse extensions (1 has its end contracted to form a tongue, asfiand this tongue is adapted to pass through a slit, 9, cut on the other transverse extension (2 when the parts are folded together, and thus by bending back the tongue upon itself the parts will be securely fastened together. Afterserewing on the nuts and before folding the parts together, I place upon the sheet-metal locking device ablock of metal or other suitable material, h, just about equal in length to the space between two nuts, and this block acts to prevent the nuts from turning, and is itself prevented from dropping off by means of the interlocking of the parts (Z d.

It will be obvious that the locking-plate may be of any length, it being only necessary that between any two bolt-holes or every other pair of boltholes the transverse extensions shouldbe made in order to hold the block it in place to prevent the nuts from turning.

I claim as my invention A device for locking nuts, consisting of the plate 0, fitting over the bolts, a block, h, interposed between the nuts, and the interlocking portions (1 done above and one below on the plate O-for embracing said block and hold ing it in position, substantially as described.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

FRANGIS H. HARVEY. Vitnesses:

JOHN S. PEARCE, W. H. GOODALE.