US857225A - Lifting-jack. - Google Patents

Description

PATENTED JUNE 18, 1907. G. W. BOOTH & G. GASPAR.

LIPTING JACK. APPLICATION P'I'Lnn AUG.25.1906.

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CHARLES W. BOOTH, OF MILWAUKEE, AND CHARLES GASPAR, OF

FOND DU LAO, WISCONSIN.

LIFTING-JACK.

,- Patented June 18, 1907.

Application filed August 26, 1906. Serial No- 331,977-

To all whom it may concern:

Be it known that we, CHARLES W. BOOTH and CHARLES GASPAR, citizens of the United States, and residents of Milwaukee, Milwaukee county, Wisconsin, and Fond du Lac, Fond du Lac county, Wisconsin, respectlvely, have invented certain new and useful Improvements in Lifting-Jacks, of which the following is a specification.

This invention relates to lifting jacks and relates particularly to lifting jacks comprising means for engaging the body portion of the jack with one piece or object; for holding it down, while another piece or object is belng raised by the jack.

A specific application of our invention is for use in removing the bearing brasses and wedges from journal bearings, an attachment to the body of the jack being engaged with the car wheel for the purpose of holding it down when the jack is applied to raise the j ournabbox.

Among the objects of the invention are to provide means for engaging the body portion .of the jack with a wheel or other object which admits of a wide range of adjustment, thus adaptlng the device for use under varylng conditions; which will be sim le, strong and durable; which may be quick y and conveniently adjusted for engaging the body portion of the jack with a desired object, as a car wheel; and which is so constructed that it may be folded or secured closely against the side of the body portion of the jack, so as not to interfere with the use of the jack in other applications where said engaging means are not required.

A jack of our invention consists of the various features, combinations of features and details of construction hereinafter described and claimed. In the accompanying drawings, in which 1 box and D, as a whole, a lifting jack, shown as applied for raising the journal box 0 in order to disengage the wedge c of the journal bearing from the retaining lug 0 depending from the top of the journal box 0 toprovide for removing the bearing brass 0 All of the foregoing arts are old and well known and may be 0' any usual or desired construction. As shown, thej ack D is what is known to the trade as a Norton jack.

, Where no means are provided for holding a car wheel down, it is found in practice that, as the journal box O is raised by the jack D for the purpose of removing the bearing brass, the weight of the car, acting on the axle through the journal box at the opposite side of thecar, causes the wheel. to rise with the journal box so that, when the journal box has been raised a sufficient distance to enable the wedge and bearing brass to be removed, it is necessary to pinch the wheel and axle down by means of a suitable bar, in order to disengage the wedge from the retaining lug. In the type of jack to which our invention relates, means are provided for engaging the body ortion of the 'j ack D with the wheel A whereby said wheel will be held down as the journal box 0 israised, thus obviating the necessity of pinching down said wheel A and the axle B in the manner heretofore described.

Our improved means for engaging the body portion'of the ack D with the wheel A or other object for the purpose of holding it down, consists of a jointed arm, indicated as a whole by E and comprising arm members 1 and 2, of which the member 1 is pivotally connected to the body portion of the jack D and the member 2 is pivotally connected to the free end of the member 2 being designed for enga ement directly with the rim of the car whee A or other object.

In Figs. 1 and 2, the jointed arm E is shown as pivoted to a lug 3 formed integral with a band or collar 4 secured to the upper contracted portion or neck 5 of the body portion of the ack D. As shown, said band or collar 4 is split and is adapt-ed to be clamped in position by means of a clamping bolt 6 which passes through the flanged end 7 of said band or collar.

To relieve the band or collar 4 from the strain due to the action of the holding arm 3 in the operation of the jack, we provide a lug 8 thereon which bears against the side of the I body portion of the jack D above the point of pivotal attachment of the arm member 1 to the lug 3.

The arm members 1 and 2 are adapted to be secured in desired pivotal adjustment, the arm member 1 to the lug 3 and the arm member 2 to the arm member 1 by means of interlocking arts thereon, as shown, by radial teeth 9 fgrmed on the engaging surfaces of said lug 3 and arm members 1 and 2, respectively. Engagement and disengagement of the teeth 9 to secure said arm members 1 and 2 in given pivotal adjustment and to release the same to provide for changing the adjustment thereof, is effected by means of clamping screws 10 and 11, each of which passes through one of the members which they respectively connect and is threaded into the other.

The clamping screws 10 and 11 are of such length that they may be loosened a sufficient distance to permit disengagement of the teeth 9 without removing said screws from the members into which they are threaded, and cotter keys 12 secured in suitable holes formed adjacent to the ends of said clamping screws operate to prevent disengagement of said clamping screws from the members into which they are threaded.

The wide range of adjustability of our improved holdin device is illustrated in Fig. 3, in which the ho ding arm E is shown in anumber of different positions. In this figure we have also shown, at 13, said holding arm folded up closely against the side of the body portion of the jack D, in which position it is out of the way and will not interfere with the use of the jack in application where the use of said holding arm is not desired.

Instead of forming the pivot lug 3 on a. separate band or collar 4, as shown in Figs. 1 and 2, which construction is resorted to when it is desired to apply our improvements to jacks not embodying the same, we contemplate equally forming said lug integral with the body portion of said lug 3. This modified construction is illustrated in Fig. 3 of the drawings, inwhich the lug to which said jointed arm E is pivoted is designated by 3 The manner of using our improved jack will be readily understood by those familiar with the art without a detailed description thereof.

We claim 1. The combination with a lifting jack, of a jointed armpivotally connected to the body portion of the jack, interlocking parts on the body portion of the jack and on the members of said arm adapted for securing said arm to the jack body and the arm members to each other in adjusted position and means for securing said interlocking parts in engagement.

2. The combination with a lifting jack, of a jointed arm pivotally connected adjacent to the upper end of the body portion of the jack at a point laterally beyond the side thereof to provide for holding said arm against the body portion of the jack when not in use, interlocking parts on the body portion of the jack and on the members of said arm adapted for securing said arm to the body portion of the jack and the arm members to each other in adjusted pivotal positions and means for securing said interlocking parts in engagement.

3. The combination with a lifting jack, of a jointed arm pivotally connected to the body portion of the jack, interlocking parts on the body portion of the jack and on the members of said arm for securin said arm to the body portion of the jack an the arm members to each other in adjusted pivotal positions and means for securing said interlocking parts in engagement, said means comprising clamping screws passin through one connected member and threa ed into the other.

4. The combination with a lifting jack, of

a band or collar secured to the body portion thereof, a jointed arm pivoted to said band or collar, interlocking parts on said band or collar and on the members of said arm adapted for securing said arm to said collar and the arm members to each other in adjusted

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