US671419A - Wrench. - Google Patents

Description

UNITED STATES PATENTY OFFICE.

THEODORE A. HOBBS, OF HINCKLEY, NEW YORK, ASSIGNOR OF ONE-HALF TO WILLIAM T. FINOH, OF NORTl-IWOOD, NEWY YORK.

WRI-:NCHl

' SPECIFICATION forming part of Letters Patent No. 671,419, dated April 2, 1901.

Application filed January 16, 1901. Serial No. 43,551. No model.)

To @ZZ whom, it may concern:

Beit known that I, THEoDoRn A. HoBBs, of Hinckley, in the township of Trenton, in the county of Oneida and State of NewYork, have invented certain new and useful Improvements in Wrenches; and l do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form part of this specification.

The object of my present invention is toprovide an adj ustable-jaw wrench opening in the direction of the length of the handle and adapted for general and special use.

In the drawings, Figure 1 shows a side elevation of the wrench with the jaws closed. Fig. 2 shows an edge view with the jaws closed. Fig. 3 is a sectional view taken on line A B of Fig. 2 with the jaws in open position. Fig. 4 shows a section taken on line O D of Fig. 3. Fig. 5 shows a section taken on line E F of Fig. 3. Fig. 6 shows a section taken on line G H of Fig. 3. Fig. 7 shows a section taken on line I K of Fig. 3.

Referring to the reference letters and tigures in a more particular description, 1 indicates the handle portion of the wrench, which is provided with a cross or T head 2, rigidly secured at one end of the handle portion. On the cross or T head portion 2 are arranged the jaws 3 and 4, each adapted to slide toward and from each other. For operating the jaws there is provided a lazy-tongs device, consisting of the cross-levers 5 and 6 and the links 7 and 8. The cross-levers 5 and 6 are pivoted at 9 to each other, and the head of this pivot 9 projects on either side and engages in grooves 10 on the inner sides of the two parts of the handle portion' 1. It will be understood, of course, that the handle portion 1 is slotted throughout the greater portion of its length and that the lazy-tongs mechanism operates between the two parts of the handle portion. The outer ends of the levers 5 and 6 are pivoted to the jaws 3 and 4 at the pivots 11 and 12, respectively. The other ends of these levers 5 and 6 are jointed at 13 and 14 to the links 7 and 8, respectively. It will be Observed that the jaws 3 and 4 are provided with recesses on their underside to receive the ends of the levers 5 and 6 and that the cross or T head 2 is also slotted or re- 55 cessed through a portion of its length to receive the levers 5 and 6. The ends of the links 7 and S are hinged at 15 and 16, respectively, to the sliding head 17, located between the parts of the handle portion l. observed that any force tending to separate the jaws 3 and 4 tends to draw the sliding head 17 toward the cross or T head 2. In order, therefore, to lock the jaws, there are It will be 6o provided on either side pawls or ratchet-s 1S 65 and 19, pivoted at 2() and 21, respectively, in projecting ears on the sliding head 17. These pawls are adapted to engage in ratchet-teeth formed in-the edges of the handle portion 1, as shown, and are forked at one end, as shown, to adapt them to engage the teeth cut in each of the parts of the handle portion 1. The pawls are provided with the projecting thumb-pieces 22 23, respectively, by means of which the operator can throw the pawls out of engagement with the ratchet-teeth,

and the pawls are held in engagement with the ratchet-teeth by the springs 24 and 25.

Adjacent to the end of the handle there are applied pieces 26 26, which form a hand-grip 8o l for the operator. At the end of the handle there is introduced the piece 27, which serves to separate the handle portions 1 at this end and also includes a square projecting portion 27a, similar to the end of a bit and adapted 85 to be received in a bit-stock. The faces of the jaws are preferably provided with a slight recess a ot, whereby the wrench is adapted to engage with the nut end on, so that the nut can be engaged and turned while the 9o wrench is held in a bit-stock.

The operation ofthe wrench is simple and readily understood. It may be well, however, to note that the projecting ends of the pivot 9,engaging in the slots 10, serve to cause IOO slidingly mounted on the T-head a cross-head longitudinally movableot` the handle, a lazytongs connection between the said cross-h ead and the jaws and means for securing the crossof jaws slidingly mounted on said cross or T head,a sliding piece located between the parts of the hand1e,alazyton gs connection between the jaws and said sliding piece, the pivot of the lazy-tongs engaging in a slot in the handle, ratchet-teeth in the handle and pawls mounted on said sliding piece and engaging in the teeth, substantially as set forth.

In witness whereof I have axed my signature,in presence of two Witnesses,this 31st day of December, 1900.

THEODORE A. HOBBS.

Witnesses:

E. WILLARD JONES, S. A. BROWN.

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