Патент USA US2407548код для вставки
h i Sept.' 10, 1946. ' R. E. GEA‘RHART' `2,407,547 WRENCH Filed ` sept. 16, 1945 BY @/MZ Patented Sept. 10, 1946 2,407,547 UNITED STATES PATENT OFFICE 2,407,547 WRENCH Roy E. Gearhart, Kansas City, Mo., assigner of three-tenths to Byram L. McCreary and three tenths to Richard B. McCreary, both of Kansas city, Mq. Application September 16, 1943, Serial No. 502,693 1 Claim. (Cl. 81-89) 1 rl‘his invention relates to improvements in a wrench and refers more specifically to a wrench wherein the jaws are constantly urged toward each other during the nut tightening and releas ing operation. ' are always maintained in parallel relation re gardless of their distance apart. A tongue 34 formed in the wall of head 20 is slidably mount ed in groove 36 formed in the wall of jaw body 30 to secure the parts in proper alignment. A The principal object of this invention is the provision of a wrench having a two piece slidable slide bar 33 having ratchet teeth 40 is slidably mounted in head 23 to operatively engage the jaw operatively adjustable to fit various sizes of ratchet teeth 42 formed in body 39 of the slid nuts and having means to force the jaws toward able jaw. each other as the Wrench is operated to set or re 10 The lever 44 pivoted in the head 20 by pin 46 lease a nut. has a tooth bar 38 so that as said lever is oscil Another object of the present invention is the provision 0f a sliding jaw wrench having a two piece slidable jaw member said pieces being adapted to be relatively adjusted to set the jaws to accommodate nuts of different sizes and also having a lever` whereby said slidable jaw mem lated relativeto head 20 the bar will be moved transversely of head 2U. Referring to Figures 1 and 5 it will be noted that the ratchet teeth are so positioned relative to the parts that the teeth will rigidly engage when the slidable jaw is moved toward the ñxed ber is moved toward or from a stationary jaw. .law so as to exert a pressure against the nut be A further object of this invention is the provi ing operated on. It will be noted that the re sion of a wrench wherein the force required to 20 duced end 52 of slide bar 38 rests against the rel loosenl or set a nut is in direct proportion to the atively short ledge 54 of the head and that the force tending to move the jaws of the wrench other end 56 extends beyond the head and is pro toward each other. vided with a roughened inclined surface 58 suit A still further object is the provision of a slid able for engagement by the operator’s thumb to ing jaw wrench adapted for use in releasing and move this end of the bar away from jaw body 30, setting nuts 0f various sizes and also for use as against the action of spring 6I) disposed in recess. a pair of pliers. 62 between bar 38 and the lug 64 at the side of le Other objects are simplicity and economy of ver 44. When so forced outwardly the teeth in constr-uction, ease and efficiency of operation, bar 38 will disengage the ratchet 42 on the slid and adaptability for general use where it is de 30 able jaw member so that the slidable jaw mem sired to prevent scuiiing or disi'lguring of the nuts ber may be adjusted relative to the ñxed jaw. being operated on. Reference will now be had to the drawing wherein, Fig. 1 is an elevational View partly broken away with parts shown in the closed position in dotted lines, embodying this invention. Fig. 2 is an edge view of the wrench shown in Fig. 1. Fig. 3 is a sectional View taken on line III The spring 66 is` sufliciently strong to normally secure the bar and movable jaw in fixed relation, however, when the jaws are opened too Wide for , the nut, the operator may easily force the jaws together to ñt the nut without moving the lever t4. If desired, the jaws may be moved to con tact each other. A handle 66 integral with head 20 serves as a 40 hand fulcrum to force the jaws to the closed po III of Fig. 1. sition, especially when the wrench is used as pli Fig. 4 is an end View of the wrench partly ers to grip an object. broken away. A plunger 68 slidably mounted in a hole 'l0 Fig. 5 is a perspective view of the slide bar. formed in head 20 is urged outwardly by spring Fig. 6 is a perspective view of a movable jaw. 45 'l2 against lever ‘i4 so as -to normally hold the Throughout the several views like reference lever and handle apart. Spring 60 also functions characters refer to similar parts and the numeral in like manner to hold these members apart, but 2D designates a head having a fixed jaw 22, and is weaker than spring 12, thus securing the lever being provided with a transverse slot 24 which against oscillation when the sliding jaw is being serves to receive the movable parts. Mounted in 50 ratcheted to position. head 2t] is a slidable jaw member 26 having a >To set this wrench for use .the operator en jaw 28, complimenting ñxed jaw 22 and a re gages the roughened end 58 of bar 38 and forces duced transversely disposed body 3i) which is the bar against the action of spring 60 to cause mounted in the slot 24 to move at right angles to a- separation of ratchet teeth 40 and 42 so that the gripping faces 32 of the jaw so that the jaws 55 the operator may move the slidable jaw to the 2,407,547 3 open position. The jaws are now set about a nut and the jaw 2B is moved forwardly until it contacts the wall of the nut. The ratchet teeth will automatically secure the jaw member 26 against outward movement. With the nut thus Y What I claim is: 4 . A wrench comprising al head member having a fixed jaw; an angled jaw member slidably'car ried by said head member, and having a jaw complementing said fixed jaw; teeth formed along the inner longitudinal edge of said jaw positioned between the jaws the operator forces member; a bar having teeth adapted to opera the lever in the direction indicated by the arrow tively engage the teeth of said jaw member; a (see Fig. l). The greater the force applied to handle member pivotally carried by said head the lever 44, the tighter the jaws will clamp the -10 member and operatively connected with said bar nut. and having a side lug adjacent said pivot where From the above description it is quite apparent by when said handle is oscillated relative to said that this wrench is adapted for adjustment to head member said jaw member will be recipro ñt Various sized nuts and has a jaw movement that insures a clamping action against the oppo cated in said head member; and resilient means site walls of the nut, proportionate to the force 15 positioned between said lug of said pivoted han dle and said bar whereby said bar is constantly Iurged against said angled jaw member as said It is quite apparent that many minor changes pivotal handle is urged outwardly to open said might be made in the structure of theparts and ,wrench jaws. also in their relative arrangement without> de ROY E. GEARHART. parting from the spirit of this invention. 20 required to release or set the nut.