US250188A

US250188A - Lifting-jack

Info

Publication number: US250188A
Authority: US
Publication date: 1881-11-29
Anticipated expiration: 1898-11-29

Description

(ModL) 10.3mm. LIFTING JACK.

No. 250,188. Patented Nov-19,1881.

INVENTOR:

ATTORNEYS.

u PETERS. fimulhognphu, wmwm n. c.

UNITED STATES PATENT OFFICE.

JOHN G. BEARD, OF NEWTONVILLE, INDIANA.

LI FTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 250,188, dated November 29, 1881.

Application filed August 29, 1881.

To all whom it may concern Be it known that I, J OHN O. BEARD, of Newtonville, Spencer county, Indiana, have invented a new and Improved Lifting-Jack, of which the following is a specification.

The object of my invention is to provide a lifting-jack for wagons, of improved and simplified construction.

My invention consists ofa bifurcated upright frame carrying a vertically-slidin g bar, which bar is provided at its upper end with a stepped head block, the bar and head block being adapted to be raised and supported in its elevated position for holding the load by a handlever pivoted at its end to the vertically-moving bar, in connection with aswinging connecting-bar pivoted to the frame and to the lever.

In the accompanying drawings, Figure 1 is a front elevation, showing the parts in position for supporting the load. Fig. 2 is a similar view, showing the parts in position ready for lifting the load; and Fig. 3 is a cross-sectional elevation on the line :10 :r, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, Arepresents the bifurcated upright frame, and B represents the sliding bar, which is moved vertically between the parts a a of the upright bythe hand-lever O, which is pivoted at c to the sliding bar B. The lever O is formed with the offset or shoulder d near its upper end, and against this offset the rounded upper end of the swing connecting-bar D is held by the pivot e, which passes through the upper end of this connecting-bar,

and through the perforated plates 0 c, secured in proper positionupon the sides of the lever G, as shown. Thelower end of thecounectingbar D is pivoted at f to the bifurcated frame. The upper end of the sliding bar B is formed with or provided with the head-block E, which is formed into the series of steps 9 for1adapt ing the jack to be used for the forward and rear axle-trees of the wagon, and for wagons of difierent heights.

(ModcL) ing bar in its vertical movement between the parts a a of the upright frame.

In use the lever O is first to be brought to the position shown in Fig. 2, in which position the vertically-moving bar and head-block are at their lowest point in the frame, in which position the jack is ready to be placed under the axle-tree. When placed under the axletreethe lever G has only to be pressed down to the position shown in Fig. 1, which causes the load to be lifted and held until the leveris swung out again.

A series of holes, i, may be madein the frame for adjusting the connecting-bar for causing the sliding bar to move vertically a greater or less distance, as desired.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a lifting-jack, the combination, with the bifurcated upright A and the moving bar B, of the lever 0, provided with the shoulder d and the swinging connecting-bar D, substantially as and for the purpose set forth.

' 2. In a lifting-jack, the combination, with the bifurcated upright A, provided with the plates h, and the moving bar B, provided with the stepped headblock E and the plates h, of the lever 0, provided with the shoulder dand the plates 0, and the swinging connecting-bar D, substantially as and for the purpose set forth;

CHARLES E. PAINTER, JOHN G. RUMPEL.