US309179A

US309179A - Lifting-jack

Info

Publication number: US309179A
Authority: US
Publication date: 1884-12-09
Anticipated expiration: 1901-12-09

Description

(No Model.)

B.- P. WITT.

LIFTING JACK. 4 No. 309,179. v Patented Dec 9, 1884.

"W .Zzzsssas. 15 17522 fur i", a a, a. UNITED BENJAMIN 1?. \VIT", OF HARTSELUS, ALABAMA.

LiFTlNGwACK.

SPECIFICATION forming part of Letters Patent No. 309,179, dated December 9, 1884.

Application tiled October 23. 189-1.

To all whom it may concern:

Be it known that I, BENJAMIN Pu Wrrr, a citizen of the United States, residing at lIart selis, in the coi'inty of Morgan and State of' Alabama, have invented certain new and usei'ul Improvements in Lit'ting'Jacks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, rel erence being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which Form a part 01' this specification.

This invention relates to lifting-jacks, and has for its object to provide a jack which is simple in construction, may be easily adjusted into position for use, be compactly folded when not in use, and which may be quieklyadjusted to elevate axles or other objects arranged at different heights from the ground.

The invention consists in certain novel features of construction and combinations and arrangements of the several parts, as will be more fully hereinafter described, and pointed out in the claims.

Referring to the drawings, Figure l is a perspective view, and Fig. 2 a side View, of my jack with the parts arranged in proper position for use, and Fig. 3 shows the jack folded as when stored away.

My jack is composed, as shown, of the base A, the standard B, the brace (J, the lever I), bail E, and hook 11. The base is provided with a series of transverse notches, A, on its upper face, extending from one end thereof. The standard is pivoted at one end to the base, on the end of the latter, opposite the notches A. I prefer to provide the base with a projection, A formed on its upper side with a recess, A, and to pivot the standard in said recess as shown, because by such construction the standard is held from lateral movement and is braced against such strain. The brace O is hinged at Oto the standard, near the up per end of said standard, and is adapted at its opposite end to engage in notches A, as shown. By adjusting this standard from one to the other of the notches the standard may be raised or lowered, as will be understood from dot- (No model.)

ted and fnlllines, Fig. 2. The lever B is preferably pivoted or hinged on the standard B, and is adapted at one end to rest under and support an axle or other object which it is desired to raise, and is provided on the upper side ot'its other or handle end with notches D, fitted to be engaged by the securing-bail.

It will be understood that instead of hinging the lever on the standard the brace 0 might be extended beyond the standard, in stead of the standard beyond the brace, and the lever be supported on the base, though I prefer to support it on the standard, because such arrangement is more convenient and pro dnccs a stronger and better device. The bail It is pivoted at one end to the base, and has its arms extended upon opposite sides of the standard and lever, and extends around the lever in position to engage the notches in the handle end thereof. I prefer to pivot this bail to the base, because by such arrangement, when in use, the strain exerted under the upper side of the bail acts between the lever and the base, and serves to hold the brace C more firmly and securely in engagement with its notch A. Though, it will be appreciated, the said bail might be supported on the standard without departing from the broad principles of my improvement.

It will further be understood that if the brace (3 were hinged at one end to the base and adjustable at its upper end into engagement with any one of a series ot'notches formed in the underside of the standard there would be no departure from the principles of my invention. The hook F is pivoted at one end to the lever, and has its other end adapted to engage a stud, F, projected from the base A, and the parts are adjusted into the position shown in Fig. 3. This hook F might be made to serve another purposenainely, as a substitute for the bail E-in which .case I would provide the standard B with a number of pins or studs fitted to be engaged by the hook F when the lever had been operated to elevate any desired object. By this construction said lever will be held in position, and the bail E might be dispensed with; but I prefer to use said bail for the reason before described.

In use the brace G has its lower end adjusted into engagement with any proper one of the notches A to suit the height of the object which it is desired to raise,when the point of the lever D is inserted under said object, and its handle end is depressed until the object is raised to the proper point desired, where it will be held by the bail E. When not in use, the brace C is folded under the standard B, the lever and bail are folded onto said parts, and the hook F is engaged with stud F, holding the parts securely in the arrangement shown in Fig. 3, in which arrangement they may be stored away in a small space, as will be understood.

Having thus described myinvention,whatI claim and desire to secure by Letters Patent, 1s

1. The combination of the base, the standard hinged at one end thereto,the brace hinged at one end to the standard, and adapted at its other end to engage on the base, and the le ver pivoted to the upper end of the standard and having its handle end adapted to be turned down against the upper side of the standard, whereby the parts may be folded into small compass, substantially as set forth.

2. In a lifting-jack, the combination of the base, the projection A mounted thereon, the standard pivoted to the projection above the plane of the upper side of the base, the brace hinged at one end to the under side of standard, and the lever, substantially as set forth.

3. In a lifting-jack, the combination of the base provided with a pin or catch, F, the

standard hinged at one end to said base, the 35 brace interposed between the standard and the base, and the lever provided with a hook, F, adapted to engage pin F when the parts are folded together, substantially as set forth.

4. The combination of the base A, provided 0 at one end with notches A, and at its other end with a projection or block, A", provided in its upper side with a mortise, A and the standard pivoted at one end to the base within the mortise A with the brace and the 45 lever, substantially as set forth.

I 5. The combination,with the base, thestandard,the brace, and the lever, of the bail hinged to the base at one end and having its other end extending over and engaging the handle end of 0 the lever, substantially as set forth. I

6. lhe lifting-jack substantially as herein described, consisting of the base A, provided with notches A, the standard B, hinged at one end to the base, the lever supported on the upper end of said standard, the brace hinged at one end to the standard, and having its other end adjustable into engagement with, notches A, hook F, and the bail hinged at one end to the base, and having its other end adjustable into engagement with the handle end of the lever, substantially as set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

BENJAMIN P. XVITT.

Witnesses:

J. M. FERGUSON, G. A. TORRENOE.