Патент USA US2397729код для вставки
lril Gttorneg April 2, 1946.A w. E. .DRAKE' l 2,397,729v 4‘wRENcH _ Filed Dec. 24, 1945 ' ` 2 Sheets-Shee't 2 ` om wx _ _ @Q_ivm -onmvNQ. _È _ .__ ._ ., _ _o3mm mm.“_ _Q Wm., _ QW _vÜ il »I-m- `_ „è_ __ [email protected] MnfredEDrÃïëm I „ _ l \ Í (Ittomeg Patented Apr. 2, 1946 2,397,729 ï ' UNITED STATES PATENTr-oÈl-*ICE lVVRENCII ` Winfred E.. Drake, Bonners Ferry, Idaho; J. H. McNally, administrator of said Winfred E. Drake, deceased, assignor of fifty .one-hun dredths to ‘George F. McGlocklin, Bonners Ferry, Idaho Application December 24, 19435 Serial No. '515,473 5 Claims. This invention relates to improvements in wrenches, and more particularly, in ñeXible jaw (c1. ‘s1-10o) ' l , . its method of operation, together> with additional objects and advantages thereof, will best be un~ wrenches of the common type‘referred to as derstood vfrom the following description of Ispe ciñc embodiments when read in connection with Stillson wrenches. It is an important object of my invention to the accompanying drawings in which: ' provide, in a wrench of the type wherein rela Figure 1 is a side view of a preferred form of tive movable handle and shank each having a _my wrench'with portionsxbroken away .and others jaw, simple and easily 'operable clutch means for shown in‘section forconvenience of illustration; maintaining adjustment between the shank and Figure 2 is a sectional View taken on the planel the handle without interfering with the utility 10 indicated as 2-2 of Figure l; of the wrench. ' Figure 3 is a side view of the movable jaw and Another object of the present invention is the its shank,`the latter being partly in section; provision, in a wrench of the type described, of Figure 4 is a perspective view of the wedge; wedging members and a lock therefor to clutch Figure 5 is a perspective view of a tapered the shank to the jaw handle in adjusted relation 15 sleeve employed in the clutch mechanism; in a simple operating mechanism devoid of lcom Figure `6 is a side View of aimodiñed form of plicated parts. wrench employing thel principles ofmy inven A still further object of the invention resides tion, in the provision in a iiexible jaw wrench of the j » > Figure '7 is a cross-sectional> view taken on line type described of clutching means between the 20 'i-«T of Figure 6; and y shank and handle to hold the same in adjusted Figure 8 isa perspective view- of a filler block relation 'without interfering with the flexibilityused in >connection -with my wrench. of the jaws. A wrench ofv the flexible jaw type must have The foregoing objects and others ancillary at'least two totally 'distinct characteristics; it must be capable of rrapid and secure adjustment thereto I prefer to accomplish as follows: According to a preferred embodiment of my without loss ofY iiexibility; and it must provide a'locking'means for an infinite number of ad justed positions Ywithin the range of adjustment invention, I dispose upon a Wrench handle, hav - ing a ñxed jaw thereon, a shank guide to dexi bly and pivotally mount a shank including a jaw and also clutch means between said handle and Shank to retain the jaws in adjusted position. which `means are simple to construct and posi lsu tive in operation. ~ Accordingly, a Apreferred em bodiment of my invention, referring to Figures 1 through 5 of the drawings, is constituted by Wrench handle i0 having iixed thereon` jaw l2 Specifically, the clutch means_comprises opposed , unequal wedges one of which is on the jaw shank and the other is independently mounted to abut said first wedge and the shank guide; A tapered sleeve encompasses said wedges and retains them byk pin I8 forms the passage 20.' Blockl I 6 has in adjusted position to thereby retain the jaws groove 22 on its rear, face‘for a purpose later to and outstanding on one’side av pair of flanges I4 which witnñller block i6 secured therebetween as 'thus adjusted. The arrangement and inclu be described. ' sion of such wedge clutching means in a iiexible In the passage v2!)~ isi loosely mounted the jaw wrench is an important phase of my inven 40 shank 24 of the jaw 2B opposite to jaw I2 and tion. Spring means may be included in the movable relative thereto to grip objects. Shank wrench between the handle and shank to press 24= lies in the assembledA wrench alongside the the two apart and it is preferable to include re handle I0 and has a groove '28 on that face near tractor spring means to tend to draw the sleeve est the handle in which is `placed thefspring 30 toward the shank guide to maintain thefwedges 45 anchored at 32 to theshank near its rear end in clutching relation to each other. Spring and forwardly to hook 34 on »the handle. Out means voperable to move the shank longitudinally wardly acting Vsprings '36', 36 each having a cap relative the handle may also be employed to 38ì press on the -inner'faee'of shank 24 to tend facilitate the adjusting of the clutch mechanism to kspread the same from the handle. Cheek during such times as the sleeve is- removed from 50 plates 40 onthe handle cover these springs and a close encompassing position. form the sides of a groove _in which the shank The novel features that I consider characteris tic of my invention are setforth with particu slides in adjusting movements. larity in the appended claims. The invention itself, however, both as to its organization and ’ As can `best be Seen in Figure 3 the vshank has a.v rearward flare» on its outer edge formed by the' ' wedge portion âl-,fhere shown as integral with- the shank but which may obviously be separably as ' from or a new hold securedwìthmore >advantage sociated therewith.V The wedge portion provides to the mechanic. the face 46v which' slopes upward and rearward l with relation to the axis of the handle ID. ~ A wedge V48 is superposed upon face 45 with‘ .Adjustment of the jaws is obtained by drawing the encompassing sleeve rearward from engage ment about the wedges which thereby become its widest portion on head 49 resting in groove loose permitting the springs 30 or 14 to urge the _ 22 ofthe shank guide...> Face 50 'ofthe wedge lies movable jaws in each case away 'from the handle ' upon face 4Q of the shank wedge portion. jaws.l Extension of the jaws is thus more or less automatic. Closing of them is produced by man The _ term “unequal” is used herein to refer tothe dif-g 'Y fering taper angles of the wedge and the wedge 10 ual manipulation of the shank rearward against _ the action ofthe aforementioned springs. When portion; i.V e., one has greater taper than the the jaws are set in a desired relation, the sleeve other. It is to be understood that each has great# around‘the Vwedges is released and permitted to er than zero angle of taper. The wedge and the closely engage and clamp them'together to regainV wedge portion are preferably unequal so that the clutching action. rit theWhile I have shown and described particular space they occupy between'facel 5I on the shank ' 24 and face 53 on theV wedge is greater forward embodiments of 'my invention, >it will occur t'o thanthat to the rear. A sleeve 52 tapered in ac Y jcordance'with the relative tapering'of the two ' those skilled in the art that various changes and- _ modifications may be made without departing ’ surfaces 5l and 53 encompasses the wedge as_well from th‘e invention, and I, therefore, aim in the appended claims to cover all such'changes and ' as the shank and its wedge portion to maintainV ' the two paits in* frictional engagement at the - lmodifications -as fall within the true spiritl and various adjusted positions of the shank. scope of my invention. Sleeve 52 has an ear V54 to which' may be at-V Y f - Thus having described my inventiony'I claim: I Vtached spring 56 at one end. rThe other end of the spring is secured forwardlyto the handle by loop member58. This spring tends to constantly _1. A wrench, comprising: relatively movable opposed jaws, one of said jaws being attached to a shank adjustable with respect to said other _ urge the sleeve 52 forward into close engagement about the wedges to lock them together. ` jaw', guide'means between said other jaw and adjustable shank _forguiding and pivotally sup In Figures 6 and 7 I show'a slightly modified form of my'invention‘in‘ which theprimary dif 30 porting said shank, opposed unequal wedges and a tapered sliding sleeve'encompassing said shank and wedges, said sleeve being slidable relative said other jaw, said wedges‘being- carried by said ^ of the movable jaw. Handle E0 has jaw B2 rela-` shank and guide means and Vsaid sleeve serving tiveV to which is mounted the -opposed jaw 64 on to limit relative movement of said wedges and of shank' 66. YShank 66 Vhas a wedge portion . 68 said shank with respect to saidother j_aw. against which is placed the wedge 'lil that is` re V2. A wrench, comprising: relatively movable tained iny clutching position by sleeve 12. A spring _opposed jaws, one of said jaws beingV attached 'i4 operates to urge the sleeve forwardly to gripping to a shank adjustable with respect .to said other 'relation on the wedges `and'springlâ tends to _spread the shank 66 from handle 60. ' A sleeve 18 40 jaw, guidel means 'between said other jaw and adjustable shank for guiding and pivotally sup is slidably'mounted on handle portion 6D and has ference over the device ‘above described resides in the formation of the guide means for the shank porting said shank, opposed unequal wedges and Y' a forward slotted ear (notshown) which enclosesY a pin (not shown) that limits movement of the sleeve 18. -A yoke 84 between sleeve 12 and ear sa iinksthe two parts together, when maman . pressure is applied totrigger portion 86 of the sleeve 18, the sleeve V‘l2 is drawn rearward'against Y n the spring 14 to loosen the wedges. Y . an encompassing tapered sleeve, said wedgesand sleeve being carried by said shank and v'guide for limiting movement of said shank, andmanually engageable means on said handle and connected to said tapered -sleeve to move the same in a manner to loosen the wedges to permit movement ' of the shank relative thehandle. The guide for theshank 66 comprises plates 90 . . 3. A wrench, comprising: ahandle havingjse pivotally’mounted on each side of the handle on 50 cured thereto a ñrst jaw, a second jaw,a shank pin 92 and having'block 94 which is grooved at 96 secured to said second jaw, a shank guide secured to receive a head end portion of the wedge‘lß. to said _handle for guiding and pivotally support A U-shaped loop V98 Yloosely encloses the op ing said shank, spring~ means between said han dle and shank operableY to pressïsaid shank in posite edge of handle 60 and a leaf spring |60' secured in place by screw I 02 presses the U-mem ber and the guide plates’into more lateral posi ' _ tion and urges the shank there enclosed alignment with the handle _60. ' f Operationr said shank guide away from said handle, said toward _ _ _ ’ .shank having a wedge portion, a wedge unequal to said wedge portion and positioned oppositely in contact withV the wedge portion of the shank, 60 said shankguide-having a guide groove and said „ '4 With the wrench in the set position of the jaws shown in Figures 1V and 6it will be apparent that an object maybe gripped between the jaws. wedge acting on said shank guide in sliding posi'f ' Y Turningpressure is Vapplied to anobject when the handle is swungV downward or _clockwise ac_ said wedgeto retain the shank in ñXed longi-'nA tudinal relationto said handle but without inter-y cording to the viewsof the drawings. " The `wedges fering with pivotal movement of the shank. tion in said'groove, and a tapered _sleeve encom passing said shank and its wedge portion and cured thereto a ñrst jawba second jaw, a shank secured to said second jaw, a shank guide secured against longitudinal'movement which would tend 'to said handle for'guiding and pivotally support to open thevjaws apart.-A The same is true of the showing of Figure 6. ' I I ' 1 » - - _ V4. A wrench;V comprising: a'handle having ~se ` in Figure 1 are retained _in clutching relationY by '_ thetapered sleeve 52 and th'e‘shank 24 is held . ’ ing said shank, said Yshank having a wedge por» _ When the wrench is swung counterclockwise to tion, a wedge unequal to said wedge portion and theg‘showing .of th‘e two 'figures »of 'thedrawings the jaws ?tend to loosen on'therobjectg'being _ gripped and the wrench may be Ldiseng'agedîthere.-4 n positioned loppositely in 'contact Ywith ‘ the wedge' portion _of the shank, said shank-guide havingv a guide groove and saldwedge acting onsaidshank Y 2,397,729 guide in sliding position in said groove, a tapered sleeve encompassing said shank and its wedge portion, said Wedge to retain the shank in ñxed longitudinal relation to said handle but without interfering with pivotal movement of the shank, and spring means urging said sleeve into clamp ing engagement? about said wedge portion and . 3 ing said shank, said shank having a Wedge por tion, a Wedge unequal to said wedge portion and positioned oppositely in contact therewith, -guide means between the wedge and said shank guide ' for guiding in and out movement of said wedge; and a tapered sliding sleeve encompassing said shank,` its wedge portion, and said wedge to retain said Wedge. f , the shank in fixed longitudinal relation >to said 5. A wrench, comprising: a handle having se handle but without interfering with pivotal move cured thereto a first jaw, a second jaw, a shank 10 ment of the shank and said second jaw. secured to said second jaw, a shank guide secured to said handle for guiding and pivotally support n WINFRED E. BRAKE.