US12510A - Improvement in screw-wrenches - Google Patents

Description

J. HYDE. WRENGHQ Patented'lllar; 13, 1855 JOSEPH H YDE, OB. NEW YORK, N. Y. IMPROVEMENT INSCREW-WRENGHES.

I v SpecificatioiiformingApart of Letters Patent N0. 12,510, dated Maroh 13, 1855.

T0 all whom 7lt may ooncern: extehds through an opening i1i the fr ont edge Be it known that I, JOSEPH HYDE, of oho of the jaw D. city, copnty, and State of New York, have in- Within the lower part of the movable jaw ventedia n'ow and Improved Wrench; and I D bhere is a cam G, ehe axis c. of said cam (10 herebydeclare that the following is afu1 l, vvorking in the sides of the jaw. The cam clear, and exact deseription of the same, referhas a spring-lever H at'aehed to it.

enCe being l1ad 130 the annexed drawings, mak- The movable jaw -D, as before stated, is ingapart of this specification,in whioha1lowed to move freely on the shank B, and

Figur 1 is a side view of my improved i's seeured at any desired point by pressing wrenoh. Fig. 2 is alsoaside view o f the same, the thumb o1 finger 011 t]1e lever H, by which th(a1ower 01 movable jawbeing in section and the oam G is made 110 bind againsn the shank showing the gripper 01 auxiliary jaw am]. B. Now if a round piece of iron 01 tubing d Garn. Fig. 3 is a back view of the Same. A (see Fig. l) be plaeed between the two jaws Simi1ar letters of referenee indieate corre- A D and the movable jaw raised or moved sponding parts in t-he sevefal figures. upward so as nearly to touch the iron d, and

The nature of my invenuion consists in havsecured at that pointby pressing the lefirer H,

@ ing an auxiliary jaw 01" gripper placed in and the auxiliary jaw or gripper E, by presssither of the jaws of the wrench and so couing upon the projection bbethrownup against structed and arranged, as will be herei'nafter the iron o1 tube d, i will be seen that by turnfully shown, that said auxiliary jaw or griping the wreneh in the usua1 direction, as inper will as the wrench is turned bind firrnly dicated by the blue arrow, Fig. l, the iron or on the artic1e between the jaws, and consetube d Will be grasped firmly between the j aw quently allow oylindrical as We11 as square 01 A and the jaw 01 gripper E, and the greatex polygonal shaped artioles-to be grasped firrnly the foroe exerted in turning the wrench 13110 by the jaws. greater Will be the holding force upon the T0 enable others skilled in the art to fully iron 01 pipe, because the iron or pip6 as the underst'and and construct myinvention,1 will wr ench is turned has a tendenoy 130 turn the proeeed 110 describe it. jaw or gripper upon it-s trunnions a, as indii A represents the upper or stationary jaw oated by the dotted arrow, Fig. 1, and conseattaohed to a shank B of 1ectangular form. quently the binding o1 holding force is in- The lower part or end of the shank is'secured ereased in proportion to the force applied in in a handle O. turning the wreneh.

D is the movable jaw, whioh slides freely The above wrenoh may be used for grasp- 0n tho shank B. The jaw may be of any couing square 01' polygonal forms as we11 as round. venient forma, and may be described as being 111 is equal1y applicable for both purposes, for hollow or having a reoess within it extending the auxiliaryjaw or gripper when not in action from its up1 ertoitslowerpart. Within this does not prevenb the jaws A D from acting recess an auxiliary jaw o1 gripper E is sesimilarly to an ordinary wrenoh; hence the cured, the lower end of the j aw or gripper imporoanoe 0f the invention. It is equivahaving short trunnions a 00,- fiting in reoesses 1ent 110 two ordinary tools, for at preseut there in the jaw D. The upper surface of oho jaw a)re tools constructed for glasping ro1ind iron or gripper E is corrugated and is flush With or tubing only, ca1led gas-tongs, but differthe upper surface of the jaw, except when ing widely in eonstruction from my improved aoted upon, so as to have its outer end thrown wrench.

upward, as will be hereinafter described. Be- The auxiliary jaw 01 gripper E may be coutween the inner side 0f the auxiliary jaw or struoted of steel properly hardened, so as not gripper E and the shai1k B there is placed a to be liable 130 bruise 0r s1ip.

- spring F, as shown in Fig. 2. This spring If necessary, one side of the shank B may i keeps the upper su'rfaoe 0f the jaw or gripper be eorrugated and corresponding corrugaflush vith the upper surfaoe of the jaw D. tions mado on the inner'side of the lower 01- T0. the front 01- outei side of the jaw o1 gripmovable jaw D 011 the side opposite the eam, per E ther'eis attached a projection b, wl 1ioh so that said j aw may be kepo seeure and pre UNITED STATES. PATENT OFFICE- as herein shown 01 in an equivalent way, so as t0 bind 01 press the article between it and the stationary jaw With a force proportionate 120 that exerted in turning the wrench, as set forth.

JOSEPH HYDE.

Witnesses:

A J. G. MASON,

J. W. COOMBS.

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