US309108A - Jacob stoodt - Google Patents

Description

(No Model.) J. STOODY.

LIFTING JACK.

No. 309,108. Patented Dec. 9, 1884.

Fffiig. J.

illnrTnn BTaTns aTnNT Trice..

JACOB STOODY, OF RIPLEY, OHIO, ASSIGNOR OF ONE-HALF TO F.` M. OLEMENS, OF SAME PLACE.

Merise-onen.

SPECIFICATION forming part of Letters Patent No. 309,108, dated December gl, 1884.

` Application filed October 13, 1584. (No model.)

To all whom it may concern.-

Be it known that I, J Aeon STooDv, a citi- Zen ofthe United States, residing at Ripley, in the county of Brown and State of Ohio, have invented a new and useful Improvement in LiftingJacks, of which the following is a specification, reference being had to the accoinpanying drawings.

This invention relates to lifting-jacks, and is an improvement on Letters Patent No. 70,644, granted to me November 5, 1867 The object of the present invention is to provide means for adjusting the pivot or bearing-point of the operating-lever along the vertical upright or standard, and to hold the lever in each adjustment, so as to increase the height to which the lifting-bar will be raised, and thus accommodate the jack to different heights.

'Vith this end in view the said invention consists in certain details of construction and combination of parts, as hereinafter set forth, and particularly pointed ont in the claims.

In the accompanying drawings, Figure l is a perspective view of my improved liftingjaek, showing the lifting-lever adjusted in the second position. Fig. 2 is alongitudinal vertical section of the same. Fig. 3 is a side elevation, the face-plate being removed, showing the operation ofthe lifting-lever. Fig. 4 is a horizontal section on the line a x, Fig. 2. Fig. 5 is a detail view of one of each pair of the eecentrically-pivoted disks.

Like letters are used to indicate corresponding parts in the several iigures.

Referring to the drawings, A designates the vertical upright or standard of the jack, made of either wood or metal, and of any suitable length or size for the necessary purposes. In one of the side faces of the standard is provided a vertical groove, B, in which moves the lifting-bar C, having its outer face flush with the stand from the lower end up to the rounded shoulder D, which is formed on the bar near its upper end. rIhe said bar is held in place at the lower end by a plate, E, coverin Y the groove B and it works at the u J )er end through an opening, a, of a cap-plate, b, which is secured to the top of the standard and projects outward a short distance therefrom.

F designates an oblong metallic box em bedded in a recess of similar shape formed in the side face of the standard on one side ofthe groove B, said box comprising two sides, c c', connected together by screws or rivets, said sides inclosing a space, d, in which the eccentricallyvpivoted disks move. As seen, the outer side, c', is vertically slotted at e, and iits iiush with the standard7 andthe inner side, c, has its front edge turned outward at f, so as to close communication between the space d and the vertical groove B.

To the inner face of the outer side, c', are pivoted two (more or less) eecentrics or disks, G- G, which move in the space d, andhave their upper edges cut out at r/ to form a bearing for one of the pivot-pins of the lifting-le ver H, the front face being cut off at h, so as to bear against the front wall, f, and thus the disks will be supported in position.

I designates a vertical faceplate arranged parallel with and on one sidev of the standard, and having its ends turned inward and secured by bolts or screws to the same. This faceplate is slotted vertically at i, and to its inner face, on one side of the slot, is secured a supplemental partition-plate, J, and between the plates I and J are pivoted the disks K. The latter are of substantially the same form as the disks G, having the saine cut-out upper portion, g, and cut-off front edge, h, the latter, however, being notched at t, to tit over a shoulder,\j, formed on the inner face of the plate I. rIhe lifting-lever II works in the space between the face-plate I and the standard, and has the eccentric or cam L attached thereto, pivot -pins m m extending outward from the eccentric and fitting in the slots of the plate I and the box F.

The operation of myinvention will be readily understood froin the foregoing description, taken .in connection with the annexed drawings. The pivot-pins m of the lifting-lever iit and work vertically in the slot t' of the face plate I andthe slot e of the box F, the shoulder D at all times resting on the eccentric, so that the operation of the lever causes the cani or eccentric to press against the shoulder and raise the lifting-bar, as shown. In. itsnormal position thelifting-lcver has its pivots resting ICO on the lower walls of the said slots e i, the lifting-bar being then in its-lowest position. As before stated, the operation or lowering of the lever causes the cam to raise the liftingbar, and as this bears against the under side of the axle the latter will be raised from the ground. This adjustment of the jack is arranged to it the smallest class of vehicles, in

' under the pivots and support the same. The

lever `is operated in a similar manner, as hercinbefore described, to elevate the lifting-bar and raise the weight (if it be an axle) off the ground. Should the next axle be higher from thev ground than this adjustment will reach, the lever is carried upward until its pivots m strike the second pair of eceentrically-pivoted disksGK, causingthem to be swung back as before; but immediately upon the passage of the pivots the said disks will automatically swing or return to their original positions, catching under the pivots and supporting the same. The operation of the lever can be repeated, to effect the raising of the axle, in the manner well'known.

It will be observed that the construction ot' the eccentric or cam at the end of the lever is such that the rounded shoulder D is received bythe cam, and, furthermore, the lever, when thrown down completely, stands nearly on a vertical line, so that the pressure of the weight on the lifting-bar is directly downward,nearly on a parallel line with the pivot of thc lever. Thus, no matter how heavy the weight is, there will be no possibility of the lifting-bar yielding down under the strain, or thehlifting or operating lever accidentally flying up or out. It will also be observed that the peculiarnovel construction of the disks-one pair, G, bearing against the front wall, f,ofthe box F, and the other pair, K, having a notch, fi', litting over a shoulder, j, of the face plate I- provides a firm support for the pivots of the lever, and there will be no possibility of the disks giving away, as they will be firmly supportedintheir operative positions.- By reason of the peculiar pivoting of the disks they will automatically swing back when struck by the v pivots of the lifting-lever; but when the latter has passed the disks will return to their normal positions. Y

It will be apparent that various modifications may be resorted to without departing from the spirit or scope of the present invention.

lMy improved lifting-jack is specially adapted to be employed in elevating vehicle-axles above the ground 5 but I wish it understood that I do not limit myself to this particular use of my invention.

My lifting jack, by reason of its construetion, is arranged to be used for lifting weights which are at varying distances above the ground, and for the purpose of increasing the number of adjustments to which the instrument is capable I propose to increase the number of disks as found convenient and desirable.

Vhen the pivots of the lifting-lever are resting on the second pair of disks, and it is desired to lower the parts to their normal positions, the jack is turned facel edge downward, causing the disks to swing back, away from the pivots, and allowing the same to traverse the slots e i until the lowest point is reached. The same result is accomplished by passing a dat piece of metal through the slots e ,to withdraw the disks from the pivots and permit the downward passage ofthe latter and the corresponding downward movement of the lever.

Having described my invention, I claimw l. In a lifting-jack, the combination, with n the standard having a vertically-slotted box fitted therein, and a vertically-moving bar, of a vertically-slotted plate attached to the standard, the operating-lever having its pivots resting in the slots of the plate and box, and means, substantially as described, for adjusting the pivots veritically in the slots, as set forth.

2. In a lifting-jack, the combination, with the standard having a vertically-slotted boX fitted therein, disks pivoted eccentrically within the box and working over the slot, and a vertically-moving bar, of a vertically-slotted plate attached tothe standard, disks pivoted eccentrically to the plate and working over the slot,and the operating-lever having its pivots fitting inthe slots of the plate and boX and resting on the disks, arranged and operating as and for the purpose set forth.

3. The herein-described lifting-jack, comprising the following instrumentalities, to wit: a standard, vertically-moving lifting-bar, an operating-lever, and disks forming the bearings for the pivots of the lever, arranged and IOO IIO-

operating so that the pivots may be adjusted t vertically, for the purpose set forth.

4. Theherein-describedlifti1ig-jack,consist ing of a suitable standard, a lifting-bar moving in the same, a plate attached to the standard, a lifting-lever pivoted in the plate and standard, and disks forming bearings for the pivots ofthe lever, said disks being eccentrieally pivoted, as described, for the purpose set forth. v

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JACOB STOODY. Witnesses: v

XV. E. MADDox, J. F. FREDERICK.

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