US209211A - Improvement in lifting-jacks - Google Patents

Description

'UNTTED STATES PATENT OEEIGE.`

oYnUs Eltsine, or sALTILLo, offro.

VIMPROVEMENT IN LIFTING-JACKS..

Specification forming part of. Letters Patent No. 209,211, dated October 2'?, 1878-; application filed September 30, 1878.

To all whom it may concern Be it known that I, CYRUs F. AsIRE, of Saltillo, in the county of Holmes and State of Ohio, have invented a new and valuable Im'- provement in Hoisting-Jacks; and I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of set forth, and pointed out in the claims.

In the accompanying drawings, which form a part of. this specification, the letter A represents a substantial frame, composed of the base-piece A1 and the standard A2, to which the operative parts are secured. B is the operating-lever, formed with a mortise, a, which is passed over the upper end of the standard A2, and attached thereto vby means of a bolt or pivot, b. vThis `lever is also provided about midway of its length with another mortise, c, within which is arranged a transverse pin, c1, and through which the curved rack-bar C passes. The forward end of this lever is provided with a cap-plate, D, suitably attached thereto by means of drive-nails, screws, or bolts. The upper surface of this plate is curved, forming a seat for the object, terminating at its rear end in the raised port-ion c, serving the purpose of a stop, which keeps the raised object from sliding downwardly.

The curved bar C is pivoted to the lower end of the standard A2, and is provided at its upper under surface with a series of ratchetteeth,'f, by which it is caused to engage with the transverse pin in the lever and retain the same in any desired position. This curved bar C should be so arranged and pivoted to the standard that the upper` portion will slightly more than balance, and thereby at all times engage with the pin (Z in the mortise c of the pivoted lever.

To the under side'of the forward end of the operating-lever is secured a link or staple, h., to which is fastened a lifting-bar, E, capable of a vertical movement in guides F of the construction substantially as shownl in Fig. 3. This lifting-bar is provided with a series of ,oblong slots, i, to receive the detachable footpiece H. This foot-piece H is composed of the horizontal bar la, adapted to be placed under a load to be raised, and the vertical bar l, horizontal bar m, and short vertical bar n, forming a hook, so as to pass through a slot and embrace the lifting-bar, substantially as shown in Fig. l of the drawings.

be of a length shorter than the length of the oblong slots t in lifting-bar, so that it can be applied and adjusted readily in the slots.

The hook portion of the foot-piece rests in one or other of the series of notches i formed in the lifting-bar, the object of the series of notches being to allow of the adjustment of the foot-piece to different heights to suit objects to be raised. Of course,the foot-piece can be made ot' a single piece of metal, cast or wrought iron, bent to the shape substantially as shown.

To raise a wheel above the ground, in order that it may be removed from the spindle for greasing or repairing, the handle of the lever is depressed, the end with cap-plate l) having been placed under the axle. By pressing down to engage with the pin d automatically and lock, and the object raised. lf the object is near the surface of the ground, or a fence to raising, the foot-piece H being properly adj usted in the slots ot' the lifting-bar and placed under the obj eet.

"Whatl claim as my invention, and desire to secure by Letters Patent, is

l. The combination, with a lifting-j ack, of a lifting-bar, E, having a series of slots, fi, and

with the jack.

The vertical bar n of the foot-piece should the handle of the lever, the rack-bar is made be raised, the lifting-bar E is employed in an adjustable foot-piece, H, sui tably connected 2. The combination., with a jack of the con- In testimony whereof I have hereunto substruction substantially as described, of the scribed my name. slotted liftin -ba-r connected at its upper end to the forwargd end of the operating-lever by OYRUS FRANKLIN ASIRE' means of the link-connection, and guided in Witnesses: its vertical movement by Jche guide F, and of ROBERT J UsTIeE, the adjustable foot-piece H, as described. J. E. ALBERTsoN.

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