US2483713A - Combined pipe wrench and vise - Google Patents

Description

ct. 4, 1949. E. SEAVER COMBINED PIPE WRENCH AND VI SE 2 Sheets-Sheet 1 Filed Nov. 3. 194? f7 1, INVENTOR.

6 j fa a dram ATTORNEY Qct,4,1949 v E. Sam/m 2,483,713

COMBINED'PIZE WRENCH AND VISE Filed Nov.. 3, i947 2 sheets-sneei 2 INVENTOR.

[afar Jkangr ATTORN EY.

Patented Oct. 4, 1949 UNITED STATES PATENT org- E Edgar Seaver, Burr Oak, Mich.

Application November 3, 1947, Serial No. 783,700

17 Claims.

This invention relates to improvements in combined pipe wrench and vise.

The principal objects of this invention are:'

First, to provide a tool which may be used conveniently as a pipe wrench or a pipe vise.

Second, to provide a pipe wrench of the selftightening or gripping type which is easily opened to release the pipe and which may be mounted on a stationary support and utilized as a pipe vise.

Third, to provide a pipe wrench with a link mounted lower jaw which cooperates with an adjustable and swingable upper jaw so that the wrench will have a strong self-tightening gripping action when torque is applied to the wrench and so that the jaws will open wide when the wrench is moved oppositely from the torque applying direction.

Fourth, to provide a pipe wrench in which the grip or pressure of the jaws may be greatly increased by the use of a separate wrench or tool.

Fifth, to provide a pipe wrench having two adjustments for tightening the jaws of the wrench, whereby one adjustment may be used to determine the approximate spacing of the wrench jaws and the second adjustment may be used to obtain a high clamping force between the jaws.

Sixth, to provide a wrench having two adjustments for tightening the jaws of the wrench, one of which adjustments has an unconnected thrust engagement with the jaws to automatically loosen the jaws when the wrench is moved oppositely from its working direction.

Other objects and advantages pertaining to the details and economies of my invention will be apparent from a consideration of the following description and claims.

The drawings, of which there are two sheets, illustrate a preferred form of my wrench.

Fig. 1 represents a side elevational view of my wrench mounted on a stationary support for use as a pipe vise, the support and portions of the handle of the vise being illustrated in cross section.

Fig. 2 is a longitudinal cross sectional view along the line 2-2 in Fig. 3.

Fig. 3 is a horizontal cross sectional viewalong the broken line 33 in Fig. 2.

Fig. 4 is an elevational view of the rear edge of my wrench.

Fig. 5 is a fragmentary cross sectional view along the line 5-5 in Fig.2.

Fig. 6 is a fragmentary cross sectional view along the line 6-6 in Fist 2.

. 2 Fig. '7 is a perspective view of the thumb wheel for adjusting the spacing of the jaws of my wrench.

Fig. 8 is a perspective view of the upper dog 5 for adjusting the position of the thumb wheel shown in Fig. 7.

Fig. 9 is a perspective view of the lower dog which cooperates with the upper dog in positioning the thumb wheel.

l0 Fig.,10 is an elevational view of the thrust link for determining the position of the dogs and thumb wheel illustrated in Figs. 7 to 9.

My wrench consists generally of a body member I upon which are mounted the lower jaw 2, upper jaw 3 and a lever arm or handle 4. The

body member I is provided with a hexagonal or other non-circular base 5 arranged to be received in a suitable socket 6 secured to a fixed base such as a plumbers truck as illustrated in Fig. 1. The

upper portion of the body I is bifurcated as at 1 providing spacedside arms 8 arranged to receive the jaw members as will be more particularly described presently.

The side arms 8 are parallel and of similar outline being provided with rearwardly projecting nose portions 9 spaced downwardly from the tops of the side arms. The nose portions 9 are apertured to receive the pivot pin or bolt Ii) as is most particularly shown in Figs. 3 and 5. One

39 of the nose portions 9 defines a non-circular 40 The lower jaw 2 is pivotally mounted by the pin [5 extending between the bifurcated end portions of a link 16. The lower end of the link It extends between the upper portions of the side arms 8 and is pivotally supported on the pin [3.

It will be noted from Fig. 6 that the tongue portion I1 ofthe lower jaw is machined to bear against the base of the bifurcation in the link I6, so that forces applied to the lower jaw will be transmitted directly to the link without placlngundue stress on the pivot pin it The side arms of the body are preferably slotted as at I? (see Figs. 1, 2, and 6) and an arcuate bearing plate I9 is secured as by welding in the slots to form an abutment for the lower end of the link I6. Thrust forces on the link l6 are thus trans- 21 are attan'ee i i si ti t i a i thii -i' ternally threaded thumb'whee1 23 after the manner of an ordinary pipe wrench. The thumb wheel 23 defines an annular groove 24 within which the retained band 25 is r eivd. The ends of the retaining band 25 are secured tothe nose portions 9 of the side arms by the tit/attain It] so that the thumb wheel zaanattpersjew 3 are rotatably mounted on the body of the wrench.

The lower portion ofgthe thumb wheel 23 desees, a series or radially holes 2 which a leverage pin e iilsertttlfor g en gp tnl st in ..tht the Wheel Tfi 'T per; and 'lo'wer ends" of; the"tliilirhb wheehare beveled ifiwardly,as'at 27, to rceiv under? cut nose portions 28 of an upper wining 2'9 "and upper and th un e ut. portions? nia' be rotatedfaway f rom each' other toass I f v 1e" and" hisassemble' the "couplings ori -the beveled pertiensfzi when; forward the re er fzb'u A m as at 31 'an den tisthealigned apertu i sts for receiving a'pin 39. slot"?! isar iafhcd to receive the fiat'eyuh ridaineat brtibnqn or the threetpm afe d neeaptrtiewaws aperturedfor receiving he cbhncti'ng' 'pm The rear side er "the tower baseline" tst'trraii'ged to bearagjinst'the' 't'rhteueeettheatre zt' e' isi'riost e ee'riysnows-three.'2. rhe "side arms a of the'body ennetu'ealfghea apertures 42 which are arranged "to receive the eyunder 43 secured "in nsteby trie'screw 543, The cylinder 43 defines an internally threaded transversely extending apertureVlS winch e ranged to' engage the threads on" thea'd'justin bolt "46. The enema-er theeajuetm'g bolt 46is nenew and adapted to tee'eitjeth'e*sfienk tthe pin "41 ed "that thefc'o'll'a'rj 4T"or'i' the pin" bears against the end 'of th e 'eujusttngt mt' as. l

[The ieetenaiee et 'zo fofthe'hbfir new is thus 'adjustably' ten c by the thumb wheerzs which is tr te-1 ably-mounted ohthebide arinso ifthe 7" nch 166 y W side arms 8 of the body and located concentric about the pivot pin E0. The upper ends of the guide members 48 are secured to the pivot pin !3 by the nuts 49 on the ends of the pin. The lower 5 ends of the guide members 48 are secured to the side arms 8 by the screws 50. The arcuate portions of the guide members 48 are segmental in cross section as is most clearly illustrated in ,igs s, so that ..the opposed sides of ttitrt ittz ee tt at tht opliosliwsides of the arm 20 on the upper jaw' and -so that the arcuate outer surface of the guide members may belreceived within the thumb wheel 23. -rne uteerefia lower jaws are slidably connected by means of opposed flanges 5| formed eh'the fear-edge of the lower jaw and engaged infthe'isldts 22'inthe sides of the arm 20 of the p er-jaw- In"operating my wrench, the thumb wheel 23 may be turned to move the arm 20 axially and adjust thesbae'mg tetvtenfthe upper and lower jaws. With the 'wr'j'en'ch positioned"iri"a fii'r'ed socket; asshowrri" Ffig'lj'thesrew ifihiay then beba'k'edjoifto permit the upperjawtoswing downwardly kwardly iiitothe 'lposition sh n b'yfthe' ae' te lines, the "rower "end "of-"the arm 2'!) swi'rigingbetween 'the side arms a or the body *er the wrench. Th'e"bacl w'a'rd "swinging motion of the upperjaw 3".wi1l 'correspohdinny swing the lower jaw 2 backwardly due to the enga ement. or the flang s 5| 'inth'e s1ots"2'2 but due tojthds'pafcing betweenthemivot pinslO ahd [3 the 'lo'werfifaw will" be "'cau'sedto move ewey fromthe'upperjaw. "*lnthis' po'sition a pipe or other obj'ectfm'ay"be placed betweenthe jaws and the eajusting "serew ts turnedih'wardly of the wrench tora'i'se theuaws'ofithe wrench to th e vertical position shown in full lines. In turning the adjusting 'scr ew'46' inwardly'the collar "4T oh"the pin 4 l' 'will'be f'orc'ed to "the rear, in 'turn swinging the"coupli1'1gs "2 9 end 30 rear wardl'y and jipii'rardly about th'e"pivot pm "Hi. The couplings acting against the thumb wheel amen carry "the arm 20 "and upper jam 3 with themfAn e'x'tremely""' high 'g-rippin'g pressure may beobtainedbetweenthejaws of'the wrench byapplyirig'a 'separatewr'ench to thehea'd of-the adjusting screw 46. w iwri'en is "desired "to use the wrench 'in'depehdently of a' support and as apipe wrench, the "adjusting "screw '46 may be removed and secured in "the 'bo'ttoxm'of the" handle: a; "as indicatedbythe' dottedlines 52 in Fig. 1, at which time the couplingsf29andQfland thumb wheel 23 willf'be "free' 't'o"s'win'g"downwardly"about'jthe pivot l0 "t'o bpe'n" the jaws of the 'wrench. The thumb wheel'm'ay be turned'to adju'stthe spacing between the upper and"1ower"jaws'and when thej a'wsj are"swurrg "to'brectedposition -they will clamp around theufipe"orbther'object', as'shown in Fig. Application of"torque"to the handle of; the wrench 'willcause the jaws to clamp more tightly to the pip'e due' tb-the 'rearw'ardly "offset position" 'ofthe pivotpimffl withrespect 'to 'the pivot pin I3. To loosen the jaws from the pipe it isohl'yn'ecssary'to rotate the wrench sliglitly to the rear or counter clbcliwise; as viewedin Fi "2. Y My wrenchjvill :tl'i'us'-'opefate"ih'thetame fashiorr ai's an oid'iriary 'plpe wienchb*ut with an increased amplitude of automatic ad ustment of thespfiffiigbtififihtheljaws. H v

The increased amplitud "jaw"o' tierling i s-of greate atiehtaent ethyl prinitting ees'y'en- 7'5 gagement of the wrench with-the pipebut"also in materially increasing the number of positions .in which the wrench may be attached to the pipe. Note that the swinging mount of the jaws permits the jaws to engage the pipe with the body and handle of the wrench in a wide range of angular positions with respect to the jaws and pipe. Thus the jaws can effectively grip a pipe while in the position shown by the dotted lines in Fig. 1 with the handle at an angle with respect to the normal position of the jaws. This is very advantageous when working in crowded places where it may be dimcult to find room to swing the handle of the wrench.

A further advantage of my wrench is that the jaws may be positively clamped to a. pipe by means of the screw 46 and it is not necessary to maintain a continual gripping strain on the handle as is the case with ordinary pipe wrenches. The V shaped contour of the jaws gives four point contact with the pipe and forces may be applied to the handle that have components parallel or askew to the pipe and handle without loosening the jaws from the pipe. Such forces on an ordinary wrench would cause it to slip off the pipe.

I have thus described a highly practical embodiment of my combined wrench and vise so that others may reproduce the same with such minor modifications of detail as may be desired without further description.

Having thus described my invention, what I claim as new and desired to secure by Letters Patent is:

1. A combined pipe wrench and vise comprising a body member having a shank portion selectively attachable to a handle or non-rotatably mountable in a fixed socket, spaced side arms on said body member having rearwardly projecting nose portions defining aligned apertures, a first pivot pin supported in said apertures, a second pivot pin extending between said side arms and spaced upwardly and forwardly from said first pivot pin,

a first coupling pivotally mounted on said first pivot pin, a second coupling pivotally mounted on said first coupling, a thumb wheel defining an internally threaded aperture and having inwardly beveled ends, said couplings having undercut nose portions engageable with the beveled ends of said thumb wheel, an upper jaw member having a threaded arm portion adjustably received in said thumb wheel, a lower jaw member having a sliding connection with said arm of said upper jaw, a link pivotally connected to said lower jaw and having its lower end pivotally mounted on said second pivot pin, an arcuate thrust plate extending between said side arms and bearing against said link, a thrust pin pivotally connected to said second coupling and having a shoulder formed therearound, a cylinder rotatably mounted between the side arms of said body and defining a transverse threaded aperture, an adjusting screw threadingly engaged in said aperture of said cylinder, said adjusting screw being hollow to receive said thrust pin and movable against said shoulder, arcuate guide members secured to said side arms and concentric about. said first pivot pin, said guide members extending through said thumb wheel and alongside of said arm on said upper jaw, and an arcuate strap having its ends secured to said first pivot pin and extending around said thumb wheel, said thumb wheel being annularly grooved to receive said retaining strap.

2. A combined pipe wrench and vise comprising a body member having a shank portion selectively attachable to a handle or non-rotatably mountable in a. fixed socket, spaced side arms on saidbody member having rearwardly projecting nose portions, defining aligned apertures, a first pivot pin supported in said apertures, a second pivot pin extending between said side arms and spaced upwardly and forwardly from said first pivot pin, a first coupling pivotally mounted on said first pivot pin, a second coupling pivotally mounted on said, firstcoupling, a thumb wheel defining an internally threaded aperture and having inwardly beveled ends, said couplings having undercut nose portions engageable with the beveled ends of said thumb wheel, an upper jaw member having a threaded arm portion adjustably received in said thumb wheel, a lower jaw member having a sliding connection with said arm ,of said upper jaw, a link pivotally connected to said lower jaw and having its lower end pivotally mounted on said second pivot pin, a thrust pin pivotally connected to said second coupling and havinga shoulder formed therearound, a

thrust member rotatably mounted between the side arms of said body and defining a transverse threaded aperture, an adjusting screw threadingly engaged in said aperture of said thrust member, said adjusting screw being movable against said shoulder, arcuate guide members secured to said side arms and concentric about said first pivot pin, said guide members extending through said thumb wheel and alongside of said arm on said upper jaw, and an arcuate strap having its ends secured to said first pivot pin and extending around said thumb wheel. H

3. A combined pipe wrench and vise comprising a body member having a shank portion selectively attachable to a handle or mountable in a fixed socket, spaced side arms on said body member defining aligned apertures, a first pivot pin supported in said apertures, a second pivot pin extending between said side arms and spaced upwardly and forwardly from said first pivot pin, a first coupling pivotally mounted on said first pivot pin, a second coupling pivotally mounted on said first coupling, a thumb wheel defining an internally threaded aperture and having inwardly beveled shoulders at its ends, said couplings having undercut nose portions engageable with the shoulders of said thumb wheel, an upper jaw member having a threaded arm portion adjustably received in said thumb wheel, a lower jaw member having a sliding connection with said arm of said upper jaw, a link pivotally connected to said lower jaw and having its lower end pivotally mounted'on said second pivot pin, a thrust bar pivotally connected to said second coupling and having a shoulder formed thereon, a thrust member rotatably mounted in the side arms of said body and defining a transverse threaded aperture, an adjusting screw threadingly engaged in said aperture of said thrust member, said adjusting screw being movable against said shoulder on said thrust bar.

4. A combined pipe wrench and vise comprising a body member having a shank portion selectively attachable to a handle or mountable in a fixed socket, spaced side arms on said body member defining aligned apertures, a first pivot pin supported in said apertures, a second pivot pin extending between said side arms and spaced from said first pivot pin, a first coupling pivotally mounted on said first pivot pin, a second coupling pivotally mounted on said first coupling, a thumb wheel defining an internally threaded aperture and having inwardly beveled shoulders at its 1 ends, said couplings having undercut nose porseeders :iicnsengageable with theshoulders of said'thumb .wheel, "an upper jawimember having .a :threaded arm rportioriadjustably:received in said thumb wheel, a lower jaw member having asliding con- :nection with said arm ofsaid upper :jaw, a link pivotally connected tol-said lower jaw-and hav- :ing its lower end :pivotally:mounted onsaid second pivot pin, a thrust :bar-pivotally connected to said second coupling and :having a shoulder donnedthereon, :a thrust (member rotatably mounted in the side arms of .saidbody and defining a transverse threaded aperture an-adjusting screw threadingly engaged'in said aperture oesaie thrust member-,said adjusting screw being, movable against saidshoulder on said thrust -=bar-, and an arcuate strap having its endssecured-to said first pivot pinand extending around "said thumb wheel.

'5. A combined 2 pipe "wrench and vise comprisi-ngabcdymember having-a shank portion selec- 'tiirely attachable to a handle or mountable in a fixed socket, spaced side arms on said body'mem- -ber defining aligned apertures, a first pivot pin supported in sa'idapertures, a second pivot pin *extending between said side arms and spacedl from said first pivot-pin, a first coupling ,pivotally mounted on said first pivot pin, a second coupling pivotal-lymounted on said first coupling, a thumb wheeldefining; an internally threaded aperture 'and having inwardly beveled shoulders at its I ends, said -'coupl ings having undercut nose portions engageable With-the shoulders of said thumb wheel, an upper jaw'mem-be-r having; a threaded "arm portion adjustably received in said thumb wheeh a lower-jaw-member having-a sliding con- -*neotion with said arm of said upperjaw, a link plvotal-ly-connected: to said lower jawand havin its lower end pivotal-ly mcunted on said-second p'ivot pin, a thrust-bar pivotally connected tosai'd -seccrrd coupling and having a'shoulder-formed thereon, .a, thrustmemberrotatably mounted in the side arms of said bodyand defining a trans- :verse threaded aperture, anadjusting screw 'th-readmg-ly-eng-aged "in said aperture f' said thrmt member; saida'd-justin screw-being movable "against said shoulder on said thrust bar, and arcuate guide merribers:secured to said side arms and concentric about said-first pivctpin, said; guidemcmbersextending through said thumb wheel -and alongside of said armon said upper aw.

6; A; combined wrench and visecomprising -a body-member having; a shanleportion"selectively attach-able to a handle *ormountable' in a fixed socket, spaced side arms on said' body member defining aligned-apertures, a first'pivot pin sup- "ported in said apertures, a second pivot pin exztcnding between sai'd' s'ide arms: and" spaced from said first pivot :pin, atwo par-t'coupling pivotally mounted on said first'pivot-pin, a thumb wheel defininganinternallythreaded apertureand having shoulders on its ends, said coupling havir-igoppcsed 'ncseportions engageable with the-shoulders of said thumb'wheel, an upper jaw member having "athrea'ded arm portionadjustably received in said thumb wheel, adower jaw. member having a sliding -:connection with said arm -of; said upper "jaw, alink pivotal'ly:connected to said lower jaw and'maving its lower- -end' pivotally mounted on said secon'di pivot pin, a thrustbar pivotally con- :nected to saidcoupling and having a shoulder tier-med thereon, a thrust member rotatably mounted in'theuside arms of :said body and de- 'finlng a: transverse aperture, an adjustingscrew 'threadingly engaged in said aperture of said 2s thrustzmemben said cadl'usting screw Ibeing :movable against said shoulder on saidthrustibar, an arcuate guide member secured zto'said side arms and concentriciabout said first pivot pin, said guide member extending through said :thumb wheel andalong side of said arm on said upper jaw, .and'aniarcuate strap having its ends -s'e cured to said firstpivot pinand'extendingna'roun saidrthumb wheel.

7. A- combined wrench and vise comprising a 'bodylmember having a shank portion selectively attachable to a handle or mountable in a fixed socket, spaced side arms on said bodymember'defining aligned apertures, a first :pivot .pin supported in said apertures, a second pivot pin :exe tendin-g between said side arms and spaced from said firstspivot pin, a. coupling pivotally mounted on saidfirst. pivot pin, a thumb wheeldefining an 'internallythreaded aperture and having shouldersaon itsends, said coupling having opposed noseportions engageable with the shoulders of said thumb wheel, an upper -j aw member having a threaded arm portion 'adjustably received-in saidithumb wheel, a lower jaw member having'a slidingconnection with said arm of said upper jaw, a linkpivotally connected to-said lower jaw and having its lowerend pivotally mounted on said second pivot 'pi-n,a thrustbar pi-votally connected to said coupling-andhavinga shoulder iormed thereon, a thrust member rotatably mounted in the side arms of said body,:a-n adjusting screw threadingly engaged with said ithrust-member, said adjusting screw being movable-against saidshoulder on said thrust balz and an =arcuate guide member secured to- *said s-ide armsandconcentric about said first pivot pin,

said guide-member extending through said thumb wheeland-alongside of said arm onsaidupper jaw.

8; ;A combined Wrench and vise comprising a body member having ashank portion selectively attachable toa handle or mountable in a fixed -'socket,-spaced side arms onsaid bod-ymember defining aligned apertures, a first pivot pin sup- 7 ported-in. sai'd'apertures, a secondpivot pin extending between said side arms and spaced from saidfirst pivot pin, a coupling pivotally mounted on-saidfirst pivot pin, a thumb Wheel-definingan internally threaded aperture and having shoulders on its ends, said-coupling having opposed nose portions engageable with the shoulders-of said thumb wheel, an upper jaw member having a threaded arm portion adjustably received in "said thumb wheel, a lower jaw member having a sliding connection with said arm of said upper law, a link pivota'lly connected to said lower jaw "and-having its lower-end pivotally mounted on said'second pivot pin, a thrust bar pivotally connected-to said coupling, a thrust member rotatablymounted in the side arms ofsaid body, an

-adiusting screw threadinglyengaged with said ".thr-ust member, said-adjusting screw being movable against'said. thrust'bar, and an arcuate strap having its ends secured to said first pivot'pinan -extend-ing around said thumb: wheel.

:and pivotally connected to one of said pivots, a

lower jaw having a sliding connection with-"said arm of said upper jaw, a link havingone end piveta-11y connected to saidelower jaw and its other end: :pivota-lly connected to said-other pivot on said body, an abutment rotatably carried by said body and spaced from said pivots, and a threaded clamping member having a threaded engagement with said abutment and movable against said guide member at a point paced from the pivotal connection of said guide member to swing said guide member about its pivot.

, 10. A wrench comprising a body member. having spaced parallel side arms, an upper jaw having a depending threaded arm, an internally threaded thumb wheel adjustably receiving said arm on said upper jaw, a lower jaw having a sliding connection with said arm on said upper jaw, a link having one end pivotally connected to said lower jaw and its other end pivotally mounted between said side arms on said body, a retaining coupling pivotally mounted between said side arms and spaced from the pivotal connection between said link and said side arms, said coupling being engageable with said thumb wheel to guide said thumb wheel for swinging motion about the pivotal connection of said coupling, an arcuate guide member secured to one of said side arms and concentric about the pivotal connection of said coupling, said guide member extending through said thumb wheel and along side of said arm on said upper jaw, and a retaining band pivotally connected with said coupling for swinging motion concentric therewith, said band being engaged with said thumb wheel for further guiding said thumb Wheel.

11. A wrench comprising a body member having spaced parallel side arms, an upper jaw having a depending threaded arm, an internally threaded thumb wheel adjustably receiving said arm on said upper jaw, a lower jaw having a sliding connection with said arm on said upper jaw, a link having one end pivotally connected to said lower jaw and its other end pivotally mounted between said side arms on said body. a retaining coupling pivotally mounted between said side arms and spaced from the pivotal connection between said link and said side arms, said coupling being engageable with said thumb wheel to guide said thumb wheel for swinging motion about the pivot of said coupling, and a retaining band pivotally connected to said coupling for swinging motion concentric therewith, said band being engaged with said thumb wheel for further guiding said thumb wheel.

12. A wrench comprising a body member having spaced parallel side arms, an upper jaw having a depending threaded arm, an internally threaded thumb wheel adjustably receiving said arm on said upper jaw, a lower jaw having a sliding connection with said arm on said upper jaw, a link having one end pivotally connected to said lower jaw and its other end pivotally mounted between said side arms on said body, a retaining coupling pivotally mounted between said side arms and spaced from the pivotal connection between said link and said side arms, said coupling being engageable with said thumb wheel to guide said thumb wheel for swinging motion about the pivot of said coupling, and an arcuate guide member secured to one of said side arms and concentric about the pivotal connection of said coupling, said guide member extending through said thumb wheel and along side of said arm on said upper jaw for further guiding said thumb wheel.

3. A wrench comprising a body member, spaced parallel pivots carried by said body memher, an upper jaw having a threaded arm portion, a thumb nut adjustably receiving said arm portion on said upper jaw, a guide member engaged with said thumb nut and pivotally connected to one of said pivots at a point on said guide member spaced from said arm portion and the axis of said nut, the axis of said one pivot being perpendicular to a plane containing said arm portion and being ofiset from said arm portion whereby said nut and said arm portion can swin bodily about said one pivot, a lower jaw having 'a sliding connection with said arm portion of said upper jaw, and a link having one end pivotally connected to said lower jaw and its other end pivotally connected to said other pivot on-said body.

14. A wrench comprising a body member having a pivot, an upper jaw having a threaded arm portion, a thumb nut adjustably receiving said arm portion on said upper jaw, a guide member engaged with said thumb nut and arranged to guide said nut and arm portion for arcuate swinging motion about an axis spaced from and parallel to said pivot, said spaced axis being perpendicular to a plane containing said arm portion and passing through said body member in spaced relation to said arm, a lower jaw having a sliding connection with said arm portion of said upper jaw, and a link having one end pivotally connected to said lower jaw and its other end pivotally connected to said pivot on said body,

15. In a wrench, the combination of a body having spaced side members, an outer jaw provided with a threaded shank and having longitudinal grooves in its sides, an inner jaw provided with supporting members engaging said grooves, a supporting link pivotally connected to said inner jaw and between the body side members, said body member having thrust engagement with the link and concentric with the pivot connecting said link to said body member, an adjusting nut for said outer jaw having a peripheral groove, a supporting band embracing the nut and in said groove and pivotally mounted on the body member, curved supports disposed through the nut at the sides of said outer jaw shank and secured at their ends to said body member whereby the jaws are swingably supported on the body member, and an adjusting screw mounted on said body member between the side members thereof and having a thrust connection with the shank of the outer jaw for tiltably moving said outer jaw.

16. In a wrench, the combination of a body having spaced side members, an outer jaw provided with a threaded shank and having longitudinal grooves in its sides, an inner jaw provided with supportin members engaging said grooves, a supporting link pivotally connected to said inner jaw and between the body side members, an adjusting nut for said outer jaw having a peripheral groove, a supporting band embracing the nut and in said groove and pivotally mounted on the body member, a curved support disposed through the nut at the sides of said outer jaw shank and secured at its ends to said body member whereby the jaws are swingably supported on the body member, and an adjusting screw mounted on said body member between the side members thereof and having a thrust connection with the shank of the outer jaw for tiltably moving said outer jaw.

17. In a wrench, the combination of a body having spaced side members, an outer jaw provided with a threaded shank and having longitudinal grooves in its sides, an inner jaw provided with supporting members engaging said sesame 11 12 rooves, a supporting link pivotally connectedto REFERENCES; CITED- said. inner jaw and between the body side members, an adjusting nutvfor said outer.- jaw, arsung hs liggfggf ff of recordm the porting band. embracing. the nut and pivotally mounted. on thevbody member, a. curved. support UN TED STATES PATENTS disposedthrough the-nut at theside ofsaid outer Number Name Date Jaw shank and secured at. their ends; to said 18 266 Blake Sept 22 1857 body member whereby the jaws. are. swingably 'g' 1883 supported on the body member, and an adjusting 13443101 .v June 1920 screw mounted on saidbody member betweenthe 10 side members thereof andhaving thrust connection,,with. the shank "of. thelouter jaw for. tiltably moving: said. outer jaw.

EDGAR SEAVER.

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