US177514A

US177514A - Improvement in wagon-jacks

Info

Publication number: US177514A
Authority: US
Publication date: 1876-05-16
Anticipated expiration: 1893-05-16

Description

E. S. HOLLISTER.

WAGON-JACK.

Patented. MayIG, 1876.

I EfZIOR J 41am WITNESSES .Att orney N-PETHS, FNUTWUTHDGIIAPHQ. WASNINGTDN. [1C- ELISHA]. S.. H O'LLISTER, OE BRISTOL, CONNECTICUT.

IMPROVEMENT IN WAGON-JACKS.

Specificationformingpartof Letters Patent No. 177,5 [(1, dated May 16, 1876 application filed- May 1, 1876.

To all whom it may concern:

Be it known that I, E. S. HoLLIsTER, of

I Bristol, in the county of Hartford and State -jack.

Figure l is a side elevation of my improved jack in position to raisethe axle of a vehicle. Fig. 2 shows the jack in position for supportin g the axle. Fig. 3'is a vertical section of the adjustable fulcrum-block and that portion of the standard constituting a rack-bar.

My invention consists, first, in a wagon-jack, the combination, with a long lever or standard, of a short lever pivoted to an adjustable fulcrum-block; second, in a wagon-jack, the

combination with a long lever, a portion of which is formed as a rack-bar, of a short lever, pivoted to a fulcrum-block, adjustableon the rack of the long lever; third, in a wagon-jack, the short lever connected with the long lever by means of aslide formed with a rib or tooth in its upper portion, and its upper and lower openings of such size, relative to the rack-bar, that the slide is adjustable on the rack-bar only when turned angularly thereto; fourth, in a wagon-jack, the combination, with the long lever, of an axle-supporting plate, -secured to the free end of the short lever, said plate being provided with lugs to fit the long lever, and thereby prevent strain on the pivotal bearing of the short lever; fifth, a Wagonjack, consisting of a long lever formed with a rack, and provided with a pivotal standard, a short lever having an axle-supporting plate, the two levers being adjustably connected by means of a slide.

In the drawings, A represents the long lever of the jack, the lower end of said lever being pivoted to a foot-block, B. The upper end of lever A is formed into a handle, C, which is curved slightly, so that it may be kept clear of the axle, and be readily grasped by the 'off the same.

hand in any position. D is the short lever, and is pivoted to a slide, E, which is formed with an open-ended slot in its upper portion, while its lower is provided with an opening of sufiicient size to allow the lever A to slide freely therein. A rib or tooth, a, of the slide E engages with notches b of the lever A. By turning the slide E the tooth a is disengaged from the notch b, and the slide may be freely moved on the lever A. When the slide is returned to its original position the tooth a eugages with the notch opposite the same, thereby serving to securely lock the slide to the lever at any desired height. The upper end of the short lever I) is provided with an axlesupporting plate, F, having lugs c, by means of which the axle is prevented from slipping Lugs-e 0 project from the inner end of the supporting-plate F. When the axle is raised and supported by the jack, the lugs fit the sides of the lever A, locking the levers together, thereby taking all lateral strain from the pivotal bearing of the short lever.

The operation of the jack is as follows: The pivoted foot is placed in a vertical line heneath the axle, and the long lever is then in the position shown in Fig. 1. The short lever D is then secured to the axle by its upper supporting-plate, the long lever is then forced toward-the axle, and the two levers form a togglejoint, which serves to raise the axle. The long lever is locked to the lugs of thesupporting-plate of the short lever,

and is there retained in a secure and fixed position.

I do not limit myself to the exact construcsimplicity, and it is easy of attachment in operation.

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

1. In a wagon-jack, the combination, with -the long lever, of an adjustable fulcrum-block and ashort lever pivoted thereto, substantially as and for the purpose set forth.

2. In a wagon-jack, a long lever notched a portion of its length to form a rack-bar, in combination with an adjustable fulcrum, and a short lever pivoted thereto, substantially as and for the purpose set forth.

3. In a wagon-jack, an adjustable fulcrumblock, provided with a rib or tooth, and formed with an opening through the same decreasing in size from top to bottom, in combination with a short lever and the rack of a long lever, substantially as and for the purpose set forth.

4. In a wagon-jack, the short lever providedwith an axle-supporting plate, having lugs oted to a fulcrum-block adjustable on the long lever, substantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 28th day of April, 1876.

ELISHA S. HOLLISTER.

In presence of DAN. A. MILLER, A. F. ATKINS.