US317924A

US317924A - Amos call

Info

Publication number: US317924A
Authority: US
Publication date: 1885-05-12
Anticipated expiration: 1902-05-12

Description

(No Model.) A CALL I WRENCH.

N0. 317,9Z4. Patented May 12, 1885.

V WITNESSES: INVENTOR ATTORNE airs 'ra'rns Rarsnr tries.

AMOS CALL, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE BEMIS 86 CALL HARDWVARE AND TOOL COMPANY, OF SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 317,924, dated May 12, 1885.

' 9 Application filed October 13, 1884. N0 model.)

ToaZZ whom it may concern:

Be it known that I, AMos CALL, a citizen of the United States, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to improvements in wrenches in which are embodied in a single wrench devices adapted to serve as a monkeywrench, and others possessing different characteristics and peculiarly calculated to meet the requirements of a wrench for gripping and turning cylindrical obj cots-such as pipes and round rods-the object being to embrace in one tool or implement improved operating elements for serving the above-named two purposes to the best advantage, but in which the devices serving one purpose cannot by their action impair the efficiency of the others.

In the drawings forming part of this specification, Figure 1 is a side elevation of a wrench embodying my improvements. Fig. 2 isa like view of a wrench ,showing a modified construc tion of Fig. 1. i

In the drawings, 22 is the bar of the wrench, having thereon the usual handle, B, and the double jawed or branched head a, the said bar having a screw-thread formed thereon on which the swivel-nut 2 turns forthe purpose of moving the jaw-slides on the bar, one of said slides having a book -like engagement with the nut D by means of a groove around the latter near one end in the usual manner. One of the branches 6 of said head a constitutes a fixed monkey-wrench jaw having a plain face at right angles to the contiguous side of the bar b, and the opposite branch, 0, of said head, to the under face of which is secured a serrated-faced gripping-dog, d, constitutes a fixedpipewrench jaw.

The improved wrench herein shown and described is constructed to obviate inconveniences by providing for the proper movement of the jawslide having thereon the monkeywrench jaw toward its opposite fixed jaw, and without lateral vibration, and for the proper movement ofthe pipe-wrench-j aw slide toward its fixed jaw, but with the requisite freedom for lateral vibration, as hereinafter set forth; and, furthermore, said wrench construction is improved and simplified by having only one jaw slide made to engage with the swivel-nut, instead of both, as heretofore, and so engaging the second jaw-slide with the first as to cause both to be moved on the bar b by said single engagement with the nut.

The jaw-slide to, Fig. 1,-has formed on it the monkey-wrench jaw h, which operates in conjunction with the adjoining jaw 6, moved by turning the nut D, a book, 2, on slide 10, engaging in an annular groove in the nut, as shown. A yoke, t, on slide to, has bar b passing through and closely fitting within it, so as to prevent any lateral vibration of the slide; and an arm, o, is formed on each side of slide w, near its lower end, between which two arms bar 12 passes, the said arms extending beyond the bar, as shown, and having a pivotpin, 0, therein.

The jaw-slide a, carrying the pipe-wrench jaw, is provided with a yoke, m, fitted loosely around the bar b, and has its lower end pivotally connected with the extremities of arms 12 on slide to by the pin 0, and said lower end of slide a has a bearingiagainst the adjoining end of nut D at J. Aspring, y, is placed between the end of yoke m and the adjoining inner side of slide w, to throw the jaw end of slide it away from bar b, leaving an opening, 00, be-

tween the dog (1 and the yoke 'i, so that the upper end of slide 91, may be free to swing more or less toward yoke t'when a pipe which is gripped between the dogs d and cl is being turned, in order to cause a species of cammovement of dog (1, whereby the engagement of the latter with the pipe is in proportion to the force exerted on the wrench, and it is thereby prevented from slipping. The bearing of the lower end of slide it on the end of nut D prevents the strain of slide it being received by pin 0, and constitutes a firm abutment for said slide.

The modified construction shown in Fig. 2 shows the pipe-wrenchjaw slide having the hook engagement 2 with the nut D, instead of the monkey-wrench jaw slide, as in Fig. l; but the slide a, in Fig. 2, is adapted and fitted to vibrate laterally, as is the same slide a in Fig. 1, and for the same purpose.

In Fig. 2, the monkeywrench slide is pro vided with two yokes, i and F, closely fitting bar I), and the slide a has an additional yoke, E, surrounding the bar between yoke F and the end of nut D. In this construction it is seen that one slide engaging with the nut carries the other slide by engagement with it, as in the wrench shown in Fig. 1, and also that in the modified wrench the lower end of the sliden has a bearing on the top end of the nut, substantially like that in Fig. 1.

In Fig. 2 the yokes m and E engage under the yokesi and F, to carry jaw it toward jaw e, and'when slide a moves down the end of yoke m engages with the point H, thus making the movements of both slides substantially simultaneous on the bar I), as in Fig. 1, when only one slide is in engagement with the nut.

What I claim as my invention is- 1. In combination with a screw-threaded wrench-bar having fixed head projecting at opposite sides thereof, a sliding jaw having yokes closely surrounding said bar, an opposite slidingjaw having an integral yoke loosely encircling said bar and interposed between the first-mentioned yokes,and a nut on the bar swiveled to one only of the sliding jaws, substantially as described.

2. The combination, with a screw-threaded wrench-bar, of a fixed head projecting at opposite sides thereof, 'a movable jaw having yokes closely surrounding said bar, a movable jaw opposite the same,having a yoke 1oose- 1y surrounding said bar and interposed between those yokes first mentioned, said jaw being also pivoted to its companion sliding jaw, and a nut swiveled'to one only of the sliding jaws, substantially as described.

AMOS CALL. Witnesses:

H. A. CHAPIN, CHAs. BILL.