US823149A - Lifting-jack, clamp, and wire-stretcher. - Google Patents

Description

No. 823,149. PATENTED JUNE 12, 1906. A. J. WHITE. LIPTING- JACK, CLAMP, AND WIRE STRETOHER.

APPLICATION FILED SEPTJB, 1906.

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UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed September 18, 1905. Serial No. 279,038.

To all whom it may concern.-

Be it known that 1, ANDREW JOHNSON WHITE, a citizen of the United States, residing at Mertens, in the county of Hill and State of Texas, have invented certain new and useful Improvements in a Combination Lifting-Jack, Clamp, and Wire-Stretcher and I do declare the following to be a full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved combination lifting-jack, clamping device, and wirestretcher and it consists in certain novel features of construction, combination, and ar rangement of devices hereinafter described and claimed.

The object of the invention is to improve and simplify the construction and operation of devices of this character, and thereby render the same more durable, convenient, and eflicient.

The above and other objects, which will appear as the nature of the invention is better understood, are accomplished. bymeans of the construction illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of my improved combination device. Fig. 2 is a vertical sectional view through the same. Fig. 3 is a horizontal sectional view; and Fig. L is a detail elevation, partly in section, showing a portion of the standard, the loose sleeve, and the engaging portions of the two friction clutch members.

Referring to the drawings by numeral, 1 denotes my improved combination liftingjack, clamp, and wire-stretcher, which comprises an upright or standard 2, mounted upon a base 3. The latter is in the form of a circular band or ring to which are secured three legs 4, which project from the lower end of the standard 1 adjacent to an annular stop-collar or sleeve 5. Upon the upper end or top of the standard 2 is screwed or otherwise secured, as shown at 6, a cross-head 7. The latter has one of its ends 8 bent downwardly and tapered and bifurcated to form a claw, as clearly shown in Fig. 1. This claw 8 may be used to engage a plain or barbed wire when the device is used as a wirestretcher and for various other purposes. The opposite end 9 of the head 7 projects outwardly at right angles to the standard 2 and forms the stationary member of a clamp.

The other or movable member of said clamp is formed by a frame 10, which is slidably mounted upon the standard 2 and which constitutes the movable head of a lifting-jack. This frame 10 com rises two friction clutch members 11 12, wliich are apertured to receive the standard 2 and which are spaced apart by a loose sleeve 13, surrounding and slidable upon said standard. The apertures or openings 14 in said clutch members through which the standard projects are of slightly greater diameter than that of the standard, so that the latter have a slight tilting movement upon said standard to cause them to frictionally engage the same, and thereby hold the frame 10 when adjusted. The lower clutch member 12 has a projecting portion 14, which is pivoted, as shown at 15, between the bifurcated end 16 of a hand-lever 17. Said lever has its bifurcated end 16 enlarged at its inner portion to surround the clutch member 12, and in its outer portion is pivoted, as shown at 18, a link 19, which has its upper end bifurcated and pivoted, as at 20, to one end 21 of the upper clutch member 11. Said end 21 of the clutch member forms the movable clamp member which coacts' with the stationary clamp member 9 and has upon its outer end a pivoted hook 22, which is in the form of a claw adapted to engage barbed wire or the like. The opposite end 23 of the upper clutch member 11 is in the form of a tapered spur which may be used for various purposes and which is adapted to be engaged by a loop or bail 24, pivoted upon the handle end 25 of the lever 17. In order to force the clutch members 11 12 to their angular position, (shown in the drawings,) and thereby retain them at any adjusted position upon the standard 2, I preferably provide a coil-spring 26 upon a pin 27 between the arms of the bifurcated end 16 of the lever and engage one of the ends of said spring with the projection 14 of the clutch member 12 and the opposite end of said spring with the lower end of the link 19.

The many uses and advantages of the invention will be readily understood upon reference to the drawings. It will be seen that when used as a lifting-jack or a wire-stretcher the load is upon the outer end of the portion 21 of the clutch member 11 or upon the claw 22, pivoted upon said end, so that when the lever 17 is oscillated the frame 10 will be elevated by a step-by-step movement, one of said clutch members 11 12 serving to bite the standard and prevent the downward move ment of the frame, while the other advances upon said standard, as will be readily understood upon reference to Figs. 1 and 2 of the drawings, in which the two positions of the clutch members are respectively shown. When the link 24 is engaged with the end 23 of the clutch member 21, said clutch members will be held in substantially parallel relation, so that the frame 10 may be readily moved upwardly or downwardly upon the standard. As soon as the said link is disengaged from the end 28 the spring 26 will force the clutch members to their angular position and lock theframe upon said standard. When the device is used as a clamp, the frame 10 is turned upon the standard, so that when the end 21 of the clutch member 1 1 alines with the end 9 of the head 7 an object of any description may be clamped between them. The device may be used'for various other purposes than those herein mentioned, as will be readily understood.

Various changes in the form, proportion, and the minor details of construction may be resorted to Without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A device of the character described comprising a standard, a frame adjustable upon said standard and consisting of two clutch members formed with apertures of greater size than said standard, to permit said members to have a tiltin movement, a spacingsleeve upon said standard, between said members, a lever having a bifurcated end pivoted upon the lower clutch member, a link con necting said lever to the upper clutch member, and a spring upon the bifurcated end of said lever having one end engaged with said lower clutch member and its other end with said link, substantially as described.

2. A device of the character described comprising a standard, a frame adjustable upon said standard and consisting of two clutch members formed with apertures of greater size than said standard, to permit said members to tilt slightly, a spacing-sleeve upon said standard between said members, a lever having a bifurcated end pivoted upon the lower clutch member, a link connecting said lever to the upper clutch member, a spring for forcing said clutch members to their angular position, and means upon said lever for locking the same to said upper clutch members to slightly tilt thereon,a spacing-sleeve upon said standard, between said members, a lever having a bifurcated end pivoted upon the lower clutch member, a link connecting said lever to the upper clutch member, a spring for forcing said clutch members to their angular position, means upon said lever for locking the same to said upper clutch member, to hold the latter in substantially parallel relation with said lower clutch member, a fixed head upon the upper end of said standard, and a base u on the lower end of said standard, substantlally as described.

4. Adevice of the character described com prising a standard, an adjustable frame slidble thereon and consisting of upper and lower friction clutch members formed with apertures to receive said standard, said apertures being of slightly greater size than said standard, to permit said members to tilt thereon, a lever pivoted to the lower clutch member, a link connecting said lever to the upper clutch member, means for forcing said clutch members to their angular position, and a link upon said lever adapted to enga e said upper clutch member, to hold said clutch members in substantially parallel relation, substantially as described.

5. A device of the character described comprising a standard having at one end a transverselyprojecting head, and a sliding frame adjustable 'upon said standard, said frame being adapted to serve as a lifting-jack and as the movable member of a clamp, the stationary member of which latter being formed by said head 6. A combination lifting-jack, clamp and wire-stretcher, comprising a standard having a base at one end and a stationary head at its opposite end, and a sliding frame adjustable upon said standard and having a portion adapted to serve as the movable member of a lifting-jack, a clamp and a wire-stretcher, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- IIGSSGS.

ANDREW J. WHITE. Witnesses:

M. P. HoLLINeswoRrH, E. H. TEKELL.

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