US376504A - Wrench - Google Patents

Description

f. 7.. WW 4 w M w (No'ModeL) WRENCEL Patented Jan. 1'7, 1888.

UNITED STATES PATENT OFFIcE.

HENRY W. ATWATER, OF EAST ORANGE, NEW JERSEY.

WRENCH.

SPECIFICATION forming part of Letters Patent. No. 376,504, dated January 17, 1888.

Application filed April 14, 1887.

Serial No. 2312833; (No model.)

T0 aZZ whom it may concern:

Be it known that I, HENRY W. ATWATER, acitizen of theUnited States, residing at East Orange, Essex county, New Jersey, have invented certain new and useful Improvements in Removable Jaws for \Vrenches, fully described and-represented in the following specification and the accompanying drawings forming a part of the same.

The object of this invention is to cheapen the manufacture of the removable jaw and to facilitate its application to theshank of a barwrench; and the improvement consistsin a novel form and arrangement for the socket by whichthe jaw is fitted to the bar or shank of the wrench.

Instead ofmaking the socket open toward its rear end, and thus requiring the application of some transverse fastening device across the mouth of the socket, as shown in United States Patents Nos. 214,697 and 51,961, I form the socket with a lateral opening havingalug at its rear side, and am thus enabled to draw the jaw toward the bar orshank by a mere clamp-screw inserted through such lug and pressed upon the rear side of the shank. The mere slackening of such clamp-screw then serves to release the jaw, and the lateral opening of the socket then'permits its removal from the shank without the delay occasioned by detaching any removable fastenings. The lateral opening of the socket also greatly facilitates the manufacture of. the removable jaw, as such socket, to be well fitted to the shank, requires milling out by a rotary cutter, and the depth of the socket is only about one-third as great when formed in the side of the jaw as when formed in the rear. The jaw may thus be held more readily during the milling operation and subjected to much less strain than when cutting out a deep socket, and the cutters employed may be of smaller size and less expensive.

The improvement may be applied to any of the detachable jaws used with straight-shank wrenches, and several jaws with operative faces of different forms are therefore shown herein. I x

Figure 1 is a side view of an entire wrench having the auxiliary jaw formed with inclined face and applied to the head of the wrench. Fig. 2 represents asimilar wrench without the handle, and having the sliding jaw formed with asmooth sloping face, and the removable jaw of parallel form with serrated face. Fig. 3 represents a removable jaw having its face inclined from both ends toward the center, and Fig. 4, a removable jaw with curved face. Fig. 5 represents a plan of any of the said jaws, as they are all constructed with sockets of the same form. a represents the shank of the wrench, b the handle, 0 the head, and d the sliding jaw.

The jaws c and d (shown in Fig. 1) have parallel faces adapted to grasp an ordinary bolt or nut, and the removable-jaw gis formed with sloping serrated face, so as to convert the wrench into a pipewrench when applied either to the head or'the sliding jaw d.

In Fig. 2 the sliding jaw d is shown with a smooth sloping face, d, and the auXili-aryjaw g is formed with a face parallel to the head 0, so as to furnish the roughened surface necessary to co-operate with the sloping face d.

In Fig. 3 the auxiliary jaw has its face formed with two inclines, t, sloped toward the center, so as to grasp the pipe when turned in either direction; andin Fig. 4a roughened concavity, j, is formed in the working-face of the jaw to operate in a similar manner. Each of these jaws is formed with asocket, 6, open ,at one side, 6, and having at its rear a lug, a, through which is inserted a set-screw, f, to press upon the rear side of the shank a. The rear side of the shank being flat, a Very slight movementof the setscrew serves to clamp the jaw to the shank or to release it therefrom. The log 6' is connected with the re movable jaw only by a tongue, 2, and is bent at a right angle with such tongue. The function of the screw is merely to keep the jaw from slipping off of the wrench-shank when in use, as all the real strain is sustained by the contact of the jaw with the shank a and with the. head 0 or slide d, on which it is pressed when used. Thelaterally-open socket is much more convenient for application to the shank thanthe jaw slotted at the rear end, as in United States Patents Nos. 214,697 and 51,961. I hereby disclaim the said patents, and limit myself to the construction I have shown and claimed herein.

What I claim is 1. The herein-described removable serrated jaw for bar-wrenches, having in its rear end a 6, open at one side, 6, and the lug being prosocket open at one side, whereby it may be atvided with the set-screw f, projected through tached to the wrench-shank. the lug e into the rear side of the socket, as [5 2. The combination, with the removable and for the purpose set forth. jaw havingin its rear end a socket open on In testimony whereofI have hereunto set one side, of the means, substantially as demy hand in the presence of two subscribing scribed, for holding the jaw in position. witnesses. Y

3. The removable serrated jaw for barwrenches, constructed as herein shown and described, with the tongue e projected from its rear end at one side, and the lug e at a right angle with the tongue, forming the socket HENRY W. ATVVATE R.

Witnesses:

HENRY J. MILLER, FREDERICK O. FISCHER.

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