US544264A - Of shenandoah - Google Patents

Description

A. RHODES. LIFTING JACK.

(No Model.)

,No. 544,264. Patented Aug. 6. 1895.

UNITED STATES PATENT OFFICE.

ANTHONY RHODES, OF SHENANDOAH, IOWA.

LlFTlNG-JACK.

5PECIFICATION forming part of Letters Patent No. 544,264, dated August 6, 1895.

Application filed January 25, 1895. Serial No. 536,173. (No model.)

To aZZ whom it may concern: I

Be it known that I, ANTHONY RHODES, a citizen of the United States, and a resident of Shenandoah, Page county, State of Iowa, have invented certain new and useful Improvements in Lifting-Jacks; and my preferred manner of carrying out the invention is set forth in the following full, clear, and exact description, terminating with claims particularly specifying the novelty.

This'invention relates to lifting-jacks, and more especially to that class thereof employ ing a lever; and the object of the same is to effect certain improvements in devices of this character, whereby the raising of the load to any given height and the letting down of the same will be facilitated.

To this end the invention consists in the details of construction hereinafter described and claimed, and as illustrated in the drawings, wherein Figure 1 is a side elevation of this jack ready for use. Fig. 2 is a similar view of the same, showing it in full lines in the act of bein g raised and in dotted lines as completely raised and locked. Fig. 3 is a plan view, and Fig. 4 is a section on the line 4 4.

Referring to the drawings, the letter B designates a base, and U is an upright rising from a point at or near the front edge of the base supported bya brace b at its rear edge, and havinga ratchet R in its front edge.

The letter S designates an upright standard or liftingbar, preferably having secured to its front edge a projection P, which may be passed under comparatively-low vehicles for the purpose of lifting them and having its upper end provided with a lifting-face which may be slightly dished, as shown.

L designates a pair of links pivoted at one end to the opposite side of the bar near its center, passing astride the upright U, and having near their opposite end slots Z, which slide over a bolt L, seated in one of a number of holes Z in the upright.

O designates the operating-lever, which is preferably forked, as shown in Fig. 3, passes astride the upper end of the upright, is mounted on a pivotal bolt 19 in one of a number of holes 19 through said upright, and has an at* taching bolt 0 engaging one of a number of holes 0 in the bar near its upper end. The

the base.

fork of the lever mayalso be provided with a series of holes 0 for the purpose of further adjusting the bolt-O.

All parts of this device are of the desired sizes, shapes, materials, and proportions, and considerable change in the specificdetails of construction may be made without departing from the principle of my invention. By preference, however, the base is about six inches.

the upright about twenty six by twelve, inches high, the lifting-bar about fourteen inches long, and the links and lever of the properproportionate sizes, the latter being preferably about two and one-half feet in length.

The device is shown in operation in Fig. 2, wherein A designates the axle of a vehicle. To lift the axle, the pivots are adjusted in the proper hicle. The entire jack may be then canted slightly forward on its base, as seen in full lines in Fig. 2, which is permitted by the fact that the upright rises from the front end of The lifting-face at the upper end of the bar S is passed under the axle A to such extent that the axle rests on said face, preferably at a point nearer the upright U than the pivotal connection 0 between'the lever O and the bar S, which is facilitated, as will be seen, by the arrangement of a series of holes 0 near the remote edge of the bar, in one of which the pivotal connection 0 may engage. The handleof the lever is then borne down upon, so that the axle is raised and the wheel is lifted off the ground, and it will be observed that as the weight is inside of the pivot O the lower end of the bar is at this time thrown out from the upright. After having raised the axlethe desired distance the operator draws the entire upper end of the jack toward him by pulling on the handle of the lever, and this motion not only brings the base B fiat onto the ground, but causes the lower end of the bar S to swing inward and engage with one of the ratchet-teeth R, the slots Z in the links L sliding over the bolt L and permitting this swinging movement of the bar. The handle is then slightly raised to drop the lower end of the bar onto the ratchet-teeth, which latter thereafter support the weight of the vehicle. To again drop the wheel onto the ground, it is only necessary to depress the holes according to the size of the vev ICC handle sufiiciently to cause the bar to rise slightly, and the weight being then inside the pivotal point 0 the lower end of the bar is thrown outward and disengaged from the ratchet R. In rare instances, however,it may be undesirable to have the above-described disconnecting action take place automatically, and I have, therefore, provided a single pivotal hole 0, which passes through the lifting-bar near its upper end and inside of its transverse center. When the lever is pivoted by bolt 0 through this hole, as seen in Fig. 1, it will be obvious that the weight of the axle on the upper end of the bar will cause the lower end to swing inward toward the upright instead of outward. \Vith this construction the lower end of the bar will automatically engage the teeth without the necessity for tilting the jack at all, and when it is desired to lower the axle the lower end of the bar must be disconnected from the ratchet by hand.

\Vhat is claimed as new is 1. In a lifting jack, the combination with an upright having aratohet in its front edge, and a lever pivoted between its ends to the upper end thereof; of an upright lifting bar adjacent said front edge with its lower end adapted to engage the ratchet teeth therein, a pivot connecting the forward end of the lever with the bar near its upper end and at a point to one side of the transverse center of the bar, links pivoted to'the body of the bar near its center and having slots in their outer ends, and a bolt or pin through the upright over which said slots slide, as and for the purpose Set forth.

2. In a lifting jack, the combination with a base, an upright rising from the front end of the base and having a ratchet in its front edge, and a lever pivoted between its ends to the upper end of the upright; of alifting bar whose lower end is adapted to engage the teeth of said ratchet and whose upper end is provided with a lifting face, a pivot through the front end of the lever and the body of the bar near the upper end of the latter and at one side of its transverse center, and means substantially as described for limiting the horizontal movement of the lower end of the bar, as and for the purpose set forth.

3. In a lifting jack, the combination with an upright having a ratchet in its front edge, and a forked lever pivoted between its extremities astride the upper end of the upright; of a lifting bar whose lower end is adapted to engage the teeth of said ratchet and whose upper end passes through and extends above the fork of the lever, a pivot through said fork and bar at that side of the transverse center of the latter remote from the upright, links pivoted to opposite sides of the bar near its center and having slots in their outer ends, and a bolt through said upright and over which the slots slide, as and for the purpose set forth.

In testimony whereof I have hereunto subscribed my signature on this the 21st day of January, A. D. 1895.

ANTHONY RHODES.

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