US1114377A - Wrench. - Google Patents

Description

H. E. E. MOLKENTHIN. WRENCH.

APPLICATION FILED MAR.21,1S)14.

1 ,1 14,377, Patented Oct. 20, 1914.

a vilwcooeo panics:-

ii sfici iieatio nvof LetterisjPatent. 'Pat entgd,0cfi; 4-,

Application film-Manna; 1914; Serial 110. 826 .330.

To all whom it may concern I Be it known that I, HERMAN 'E. E. Monnex'rnrx, a citizen of the United States, residing at Coeur dAlene, in the county of Kootcnai and State of Idaho, have invented certain new and useful Improvements in renches, of which the following is a specification.

This invention relates to an improved wrench, and the prin ipal object of the invention is to provide improved means for operating the jaws so that by pivotally mounting the handle, the removable jaw may be brought into and out of engagement with the stationary jaw.

Another object of the invention is to so connect the link of the movable jaw with the handle and movable jaw that the link will at all times move substantially parallel to the shank of the stationary jaw, and thus be prevented from danger of bending.

Another object of the invention is to so construct the handle that the link will engage abutment shoulders formed upon the handle and thus limit the opening of the wrench.

This invention is illustrated in the accompanying drawings wherein- Figure 1 is a perspective view of the improved wrench; Fig. 2 is a fragmentary view showing the wrench in an open position, certain portions of the jaws being broken away to show the manner of removably mounting the gripping plates.

The handle 10 of this wrench is provided with a head 11 which is provided with a slot 12 in which the inner end of the shank 13 is pivotally mounted by means of the pin 14. A hinge car 15 extends from the head 11, the side face of the head from which the hinge ear extends being cut at an incline so that abutment shoulders will be formed upon opposite Sides of the hinge car to limit the pivotal movement of the link-16 which is pivotally connected with the car 15 by means of the pin 17. The movable jaw 18 is slidably mounted upon the shank of the stationary jaw 19 and is provided with a reduced lower forward port-ion forming a hinge car 20 with which the link 16 is pivotally connected by means of the pin 21. The jaws 18 and 19 are provided with under cut grooves in which the dovetail gripping plates 22 are placed and relcasably held by means of grooves 23.

-lVhen using this wrench, the jaw 19 is grasped with one hand and the-handle n, with the other. The handle is-tiu'ncd upon its pivot pin 14 to draw the movable jaw tothe open position shown in Fig. \Yhen I,

the handle 10 has been turned to draw the jaw 18 along the shank 13 as far as possible, the link 16 will engage the shoulders of the head 11 and thus prevent the jaw 18 from being drawn along the shank 13 any farther. The wrench is placed upon the pipe or nut with the pipe or nut fitting between the gripping plates 22 and the handle is then moved in the opposite direction to bring the movable jaw toward the stationary jaw. The two jaws will engage the pipe or nut and the teeth of the gripping plates will bite into the pipe thus preventing the wrench from turning upon the pipe.

After the pipe has been tightly gripped, the stationary jaw can be released and pressure then placed upon the handle so that the pipe can be turned. The link 16 is at all times positioned substantially parallel to the shank 13 and therefore the strain extends longitudinally of the shank and link thus preventing the shank and link from being broken or twisted. After the pipe has been turned as far as possible with one operation,

the pressure can be released from the handle 18 and the wrench can then be turned upon the pipe without it being necessary to move the wrench from the pipe. The wrench can therefore be operated without being moved from the pipe since it can be oscillated upon the same with the jaws slipping upon the pipe when moving in one direction and gripping the pipe when moving in the opposite direction. It should also be noted that the wrench can be quickly applied and removed from the pipe since the jaws do not have to be adjusted by a worm screw or other means.

What is claimed is:

1. A wrench comprising a handle, a head at one end of said handle provided with a longitudinally extending slot and having one face at an incline to form abutment shoulders, a hinge ear extending from the inclined face of said head, a movable jaw having its shank pivotally mounted in the slot of said head, a movable jaw slidably mounted upon the shank of said stationary jaw and having its lower forward port on reduced to form a hinge ear, and a link pivotally connected with the hinge car of said movable jaw and with the hinge ear of inclined face of said handle, a stationary said head, the link being positioned at all with the hinge ear of said handle whereby times substantially parallel to the shank of said stationary jaw.

3 2. A wrench comprising-la handle provided at one end with a head having one face cut at an incline to form abutment shoulders, a hinge ear extending from the stantially parallel to the shank. of said stationary jaw and engage the inclined face of said handle to limit the pivotal movement of said link in one direction.

In testimony whereof I afiix niy signature 2 h h k l in presence of two witnesses. jaw aving its 5 an ivotal connected with said handle,- amgvable jiiw slidably HERMAN MOLKENTHIN' mounted upon the shank'of said stationary Witnesses: jaw and the link 'pivotally connected with ROBERT,H. .MUNGEY, said movable jaw and pivotally connected W. H. HOLDEN.

Said link will at all times be positioned sub- 15. I

Images