US95157A - Improved lifting-jack - Google Patents

Description

` To all whom dt ma/y conce-rn: v

Louis P. SMITH, or -MIDDLETOWN, PENNSYLVANIA.

Letters .Patent No. 95,157,- dated September 21, 1869.

IMPROVED LIFTING--T ACK..

The Schedule referred to in these Letters Patent and making part of lthe same.

" ne a' known that. I, noms P, SMITH, of Middletown, in the county of Dauphin, and State .of Penn- Sylvania', have invented an improved Lifting-J ack, for

" household use; and Ido hereby declare that the following is a full and exactdescrption thereof', reference l being had to the accompanying drawings, making part of this specification- Figure 1 being a central vertical section ofthe instrument;

Figure 2, a top view of the same. l Like letters designate corresponding parts in both i figures.

Thisinstruuient (which I term The Excelsior Jack is intended for raising stoves, bureaus, and other heavy l articles of household furniture, and it is so constructed that carpets may therebybe removed from or put down under the urniturewith' ease and celerity.

The `stadard A, which supports and encases the working-parts, has .a broad, thin-edged base, a, exf tending under the centre of support, the construction vbeing such iu order that it may enter readily under the edge cfa carpet, and support the instrumentupon l the` bare door.

Encased in the "standard A, is a sliding lifting-bar,

. i B, provided with projecting side-wings f f, which lit incorresponding grooves in the standard,'aud hold the bar strong-and hrm in position.

Th's'lifting-bar has rack-teeth l) on the back edge,

` into which match'cogs d, on the circular edge of the inner end of an operating-lever, D, which is pivoted .andI partly encased in the standard.

,This enlarged inner end of thev` lever D has also ratchet-teeth e beneath, into which lcatches a'detent,

Bi, also pivoted and. partially encased in the standard A., beneath said lever, substantially as represented.

s on which the article to be lifted rests.

one of which a claw, c, on the under side of the block,

catches, the block being moved up or down onv the bar, according to the height of the article to be lifted, where the instrument is applied'. l

When the instrument/is run under the edge of the carpet into position, and the outer end of the lever D is vraisedY by the foot, the block Gis adjusted under the part to be lifted against, and thelever D is depressed, thereby sliding up the lifting`bar B, andraising the article from the floor. The detent E' holds the lever down till it is required to release the jack, and lower thearticle, and then the detent is again set free.

I claim, as my invention- The lever D, constructed with cogs ll and ratchetteeth e, in combination with the lifting-bar B, having rack-teeth l), and with the detent E, substantially as and for the purpose `herein specified.

Also, the construction and arrangement of the standard A with the Working-parts of the lever D, and detent E encased therein, and the Alifting-bar B with its long sidewings sliding in grooves thereof, substantially as set forth.

This specification signed by'mc, this 2d day of June,

LOUIS P. SMITH.

'Witnessesel HENRY' HINNY, G. A. WALBORN, Jr.

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