Патент USA US2134468код для вставки
Oct. _25, 1938. S. F. BASHARA ‘ 2,134,468 l SLIP Filed Jan. 28,. 1955 2 ô; F. ÜASHARA, BY INVENÈOÈQ . MWL( m@ M ATTORNEYS Patented Oct. 25, 1938 2.134.468 PATENT' oFFICE e _ _ _ _ ` „ _ _ , _ _ _ v Y v, j ,j SLIP. 4Sanf'niel Ffßashara,_liouston,rv'1‘ex. _ __ 15 malins.` l(ol. 2li-_263) pipe engaging slips of` the type‘generally used in tion. connection with the handling’ of pipe in 1 ell v drilling or pumping operations.` ' . . beingY out. away vtoishow‘the details of construc `The invention. »relatesi'tol `an l improvement in v 914. _ Appiicatiòn Janua?yea 1935, serial Na. 3,768 ' . _ _. Y . :'Fig,` 2V is asectional View taken along _the plane . 2-`,-2 VVofFig; l, andin the direction of the arrows. `One of the _objects of the invention isto provide ' a slip having renewable jaws or‘liners, each of Fig; B" is a front View of a removable slip jaw formingcapart of the invention. Fig. Ãlis a top plan’view of the jaw.v shown ` the jaws having'more than one toothed face so that afresh face may be set to ,engage the pipe in Fig. 3. ' " by merely adjusting the position of‘ the slip parts. *_Fig. 5 isa sec'tionalview'of the lower end of l0 Another object of the invention is to ‘provideV the slip segment seen> in jFig. 2, showing a slightly 10 'a sliphaving` renewable jaws, each of which different' form of . construction. has a plurality of pipe engaging faces, and ‘which - may be turned -to put ans7 ofthe different parts in 15 operative position. ' ‘ ‘ Fig. 6 isa transverse sectional view takenV along ' the .planeîßi-'ß of Fig. 5, and in the direction in dicated'by thearrows. l Another object of the invention-»iste provide .` ` E FigJl is a` View similar to Fig. 6 showing the renewable `slip jaw` having ‘faces thereon adapted operationof 'onefeature of the invention. to `fit diiferent sizes of pipe. _'~ ‘' Y Fig. 8 is `a` broken* front elevation of a slip Still another object of ‘the invention is’to pro- 'i segment illustrating a somewhat different type rvide a reversible dovetailjawltoV give a double of construction,” but retaining.. the features of 20 `.useful lifeptothe jaw itself. .. . n " , ~ the .-invention.` ' l' . ’ 20 , Another object of theinvention islto provide a Fig. 9 isa sectional view taken along the plane ' removable slip'jaw` which‘is adaptedV to rock 9;910f Fig. `8. , l about :a Vertical _axis tofconform ‘_togthe contour Fig. 10 is af sectional View taken through the of the pipe supported, and, in -addition, -`to Vpro- . jaw of. Figs. 8 ‘and 9 showing a suggested tooth ~ 25 vide'àfor‘resilient» means ¿for -holding the jaws 25 profile.` p in a substantialh7 aligned position when freefrom . ’ t l . v Thetype ofpipe engaging slip which I_have designed'is adapted tobe seated within the usual downwardlytapered slip bowl l2. Each slip is provision of a >renewable backingmember for the. . made upof a plurality of segments Ill adaptedr ‘slip segments, and, when desired, for the provi' to be positionedtqlengagethe pipe or, tubing I3. sion of'a resilient ¿cushion between‘said backing; Each segmentis‘lreoessed on its forward face to load. .. l . A still‘furthe'r object of the invention is the member and the segment itself. l . zv Y ‘ receive a removable jawfor liner member 25. A further object of theinvention is to.provide ` Said jaw isl formed .with a pluralityjof pipe en a backing membersfor a slip segment which may gaging faces, each'face of fwhich istoothed to 35 be adapted to fit at least two dilîerentsized slip l, bowls. . „ , Y . . The` invention contemplates broadly the provi sion of a `slip in which the pipe jaws day be moved to give fresh pipe engaging areasV without re 40A placing‘the parts, and where the jaws‘are free’ to> engage the pipefj.: , v 4As seen in .'Fig. 3 peach pipe engaging face of th'effjaw f is " formed with` flattened .areasv 26 and 27„A the areas 26 being :cut more deeply in' the toothed" face ofthe vjaw than are the areas 2l.Y Referring now to Fig.` 2 the areas 26 and 21 engage‘the interior Vwall oftherecess in the seg move slightly to align 'themselves with the pipe, and 'in addition, to adapt the jaws _tobe set' to ' mentïllllwhich >is shaped toreceivethejaw and, hold various_ sizes `of pipe. __lt_ is also'` conteme ' because of their different depths. _flattened areas plated that a-"rresiliently mounted >backingmern- ' internt` with the face“ of thesegment leaving » ‘bermay bev provided on the back. of the segments. a ‘space-23” allowing for relative `longitudinal on the segment. This per- . this member being formed Vso that -it may be set _ movementjof the to adapt the slips; to two‘differentsiz'ed slip'bo\ï/l_s;'_j4 mits a jarring`_ açtionfof _thejaw on the segment 50 30the'r advantages are thought to`V be apparenti?` >wlien‘tl'le device` is released .by the _upward move when'` the >following description is fread jin con-V méntof the'pi'pelâff -nection with the accompanying drawing.'wheref#` 1111 _ _ . l p I . The upper“ and low‘érends of’. each jaw ,arev recessed _atfZS’to interñt with adowel 2'9f'on the "Figli is‘a‘top plan View of aportion of a slip . lower’endand na cap’ screw 3|’ at"t_h'e uppefend ' thereof.` The doweland screw -i-lt loosely in they 55.. ance vwitlri the inventi_or1_,l_._one_.of_ the segments recess' >s_o _as allow a_` slight playv of _the jaw on bowl in which are slips constructed in'a'ccord 35 2 2,134,468 its support for more ready adjustment of the jaw to the pipe. As will be seen in Fig. 1, each jaw has its pipe the pipe and starting the upward movement of the segment from the slip bowl. In place of the rubber pad 43 I may place a engaging face recessed on an arc interfltting spring shown at 45 in a recess 46 at the lower with the rounded end or face 23 of the segment I4. This allows a rocking of the jaw on the segment to a certain limited extent' which per bear against the wear strip 41. I have also shown the lower end of the wear strip as being provided mits adjustment of the jaw to the pipe. with a recess 48 to receive a dowel 49 upon which There are four similar faces on the jaw shown in Fig. 1 10 and it will be obvious that where the cap screw 3| is removed the jaw may be partially rotated to present another face to the pipe where wear end of the segment, the spring being adapted to it is loosely mounted. The spring 46 tends to move the lower end of the wear strip against the slip bowl and allow a slight movement thereof which permits release of the jaw from the pipe on has taken place on the face originally employed.A I am enabled, therefore, to provide four separate pipe engaging faces to be employed before the g ously described. jaw has become too dull for further use. . form shown in Fig. 1 and Fig. 5, I may mount In Fig. 4 I have shown how the jaw'may be varied from that shown in Fig. 1 to provide ad- ` justment for the different sizes of pipe. In this 20 embodiment the jaws are slightly elongated in one direction, the faces, however, being similar in al1 respects to those shown in Fig. l. The pipe engaging faces 34 will be adapted to engage a pipe of smaller diameter than are the two opposed faces 35. The recesses 31 at the upper and lower ends of the jaw are elongated to interñt with the cap screw 3l and the dowel 29 when the jaw is mounted on the segment I4. I have also provided a removable backing strip §39 by means of which the position of the segment _ I4 may be varied. The said backing strip 39 is preferably rectangular in cross-section and as shown in Figs. 6 and 7 they are fitted-within recesses in the outer side of the segment I4’. As 35 the wear strip is wider in one direction than in the other it may be changed as to position within the recess to move the segment at different dis tances from the bowl in which the slip is seated. In Fig. 6 the wear strip is placed with its 40 narrow thickness toward the bowl so as to ñt a bowl of slightly larger diameter. In Fig. 7 the reverse is the case. These wear strips have at their upper end recesses to receive the cap screws 42 fitting within the recesses 4I. I have shown 45 Vthe lower end of each strip inserted within a tapered seat at the lower end of the recess which receives the strip as shown at 40. I may also provide a resilient pad of compressible material such as rubber 43 placed between the wearing strip and the outer side of thev segment I4. Each segment is provided with one or more the upward movement of the handle I9 as previ YWhile the jaws are preferably made in the them as shown in Figs. 8 and 9. In this case the segment 5I is shown as rounded on its outer side to engage the slip bowl and the wear strip 39 is omitted. The jaw member 51 has two pipe en gaging faces either of which may be presented outwardly to engage the pipe. The forward face of the segment 5I has a dove-tailed recess 52 into which one side of thejaw may be engaged, the form of the jaws presenting a double tenon either face of which may engage in the morticed groove in the face of the segment. I may also provide resilient strips 6I on the forward face of the segment to allow a certain resiliency in the mounting of the jaw and to 30 provide for adjustment of the jaw around the rounded face 53 of the recess. The lower end of the recess 52 is closed at 56 as will be seen in Fig. 8. The upper end of the mortice is closed by a plate 58 held in position by the screw 59. 35 The forward face of the jaw which engages the pipe may be toothed in variouszways and in Fig. 10 I have indicated a desirable form of tooth which may be used. This tooth is provided by transverse grooves 63 in the pipe engaging face 40 of the jaw. Between the grooves are areas 62 which may be knurled to frictionally engage the pipe. The grooves 63 have their upper walls inclined downwardly and inwardly, and are thus adapted to resist downward movement of the pipe 45 relative to the jaw. ' In the use of these slips it will be apparent that the slips are each made up of a plurality of flexibly connected jaws or segments which have a limited lateral rocking and Vertical adjustment 50 which allows the jaws to adjust themselves to laterally extending arms I6 which are adapted irregularities in the pipe and to irregularities in to engage with similar arms on adjacent jaws to provide a hinged connection. The ends of these arms are formed with an opening to receive a the slip bowl in which they are seated. In case hinge bolt which allows a pivot connection be tween adjacent segments. Each arm is formed adjacent its end with lateral shoulders Il which engage to limit the lateral swing of one segment 60 relative to the adjacent segment. A plurality of jaws thus hinged together may form one complete slip. In Fig. 1 IV have indi cated three of such jaws hinged together and pro vided with a handle I9. Said handle is hinged at 65 its lower end toa pivot pin 2I mounted upon the upper end of a lug 2|’ on the central segment I4. It is also to be noted that each handle has an inwardly extending arm 22 which is adapted to engage the pipe when the handle I 9 is swung up 70 wardly. With reference particularly to Fig. 2 it will be seen that the upward swinging of the handle I9 will engage the arm 22 with the pipe tending to lmovethe jaw outwardly away from the pipe compressing the pad 43 and allowing the releaseV of the jaws from engagement with the slip wedges too tightly between the pipe and thebowl, the upward movement of the pipe will cause the jaw member 25 to be moved upward and jar the segment by the engagement of the shoulders at 23’ as previously noted. This will loosen the parts and allow the slip to release. By the use of the wear strips 39 it is possible to ad 60 just the jaws vtoward and away from the pipe to accommodate different sizes of bowls. Further, by the use of jaws, oblong in cross-section as shown in Fig. 4 adjustment of each jaw may be made upon its segment to accommodate the differ 65 ent sizes of pipe. The slip is, therefore, remark ably flexible and is adjustable in various ways, not only to present different sides or engaging faces to the pipe, but to accommodate pipe of varying diameter. 70 'I‘he device is simple in construction and will have many advantages obvious to those skilled in the art. What I claim is: 1. A pipe engaging slip comprising a plurality 75 . Y enA ment, and means to limit the movement of said bowl, pipe engaging jaws carried by said seg backing member. ments, each of said jaws havingr a plurality >of arcuate pipe engaging faces thereon, and re leasable means to secure> said jaws to said seg 9.A In a device forsupporting4 pipe in wells, a ' downwardly tapered slip segment, a channel ` along the front vertical face thereof, a pipe en ments whereby either of the pipe engaging faces of each jaw may be turned to contact the pipe. gaging jaw insertable into said channel and securable therein, pipe engaging faces on the front and back of said jaw, said jaw being slida bly removable and reversible whereby either oi' 2. In a pipe engaging slip,. a plurality of tapered segments adapted to fit withinV a slip 10 bowl, flexible connections between said segments, said faces may be positioned to contact a pipe. 10 a removable jaw ,carried by each of. said seg ments, a plurality of concave pipe engaging sur d faces on said jaw, and concave-convex bearing into» said groove, concave pipe engaging areas on the opposite faces of said jaw, and slots in the side of said jaws, the walls of said groove being formed to engage said slots to hold said jaw in l0. A slip segment, a groove extending verti cally therealong, a pipe engaging jaw insertable surfaces between said jaw and said segment t0 allow rocking of said jaw on said‘segment. 3. In a pipe engaging slip, a plurality of tapered segments adapted to ñt within a slip bowl, flexible connections between said segments, a removable jaw carried by each of said segj 20 3 2,134,468 . of tapered segments adapted to ñt within a slip ments, said jaw having four pipe engaging faces extending longitudinally thereof, said jaw being relcasably mounted relative to the adjacent seg place. ‘ ' Y 11. A slip segment, a‘groove extending verti cally therealong, a pipe engaging jaw insertable into said groove, concave pipe engaging areas on the opposite faces of said jaw, slots in the sides of said jaws, the walls of said groove being ment so that either of the four faces may be pre- ' formed to engage said slots to hold said jaw in , 25 so 35 sented for contact with the pipe. place, and a convex bottom in said groove to sup 4. A slip adapted to be used with either of two - port said jaw. different sizes of pipe including a pluralityY of l2. In .combination with a slip having a plutapered segments, combination four-faced jaws rality of jaws adapted to engage a pipe, a handle carried by said segments, said jaws being in oppo for lifting said slip, a pivoted connection be site pairs, and means releasably securing said tween said handle and said slip whereby said jaws to said segments, the opposite faces of. said handle normally falls to a lowered position, and combination jaws forming one pair being formed- means responsive to the raising of said handle to engage the same size pipe, said jaws differing to engage the work and thus to force the slip in distance across the respective pairs of jaws d away from the pipe. ' 13. A slip segment, a longitudinal groove on the to compensate for the ‘difference in diameter of the two sizes of pipeto be engaged. forward side thereof, a pipe engaging jaw slida ’ 5. In combination with a slip segment, a re ble longitudinally in said groove, concaved pipe newable backing member interposed between said engaging areas on the opposite faces of said jaw, segment and the slip bowl, and a yieldable sup . a resilient cushioning means engaging the inner port between said slip segment and said backing side of said jaw in said groove, the walls of said member adapted to be compressed by the wedg groove being formed to engage the sides of said ing of the segment. , . Y jaw to hold said jaw in position. 14. A slip segment, >a longitudinal groove on 6. In combination with a slip segment adapted to fit a slip bowl, a renewable backing member the forward side thereof, a pipe» engaging jaw interposed between said segment and the slip slidable longitudinally in said groove, ccncaved 45 bowl, said backing member being substantially rectangular in cross-section and adapted to be turned to vary the thickness of the assembled slip segment so as to fit in slip bowls of different sizes. . v 25 ~ 30 35 40 pipe engaging areas on the opposite faces of said 45 jaw, a resilient cushioning means engaging the inner side of said- jaw in said groove, a concaved face on said segment engaging said jaw whereby V it may have a rocking movement on said seg i 7. In` combination with a slip segment, a re » ment against the pressure of said resilient means. 50 15. A supporting segment the forward face of newable backing member therefor adapted to en which is convex, a pipe engaging jaw having a gage the slip bowl, means to secure >said member plurality of concave faces to engage said convex in position, and a layer of. resilient material be face, means lon said segment to retain said jaw 55 tween said member and said slip segment. movably in position on said segment, rubber 55 ì 8. In combination with a slip segment, a re cushions at each side of said face to yieldably newable backing member interposed between said engage said jaw, and pipe engaging teeth on the 50 segment and the slip bowl, resilient elements vtending to separate said member from said seg concave faces of said jaw. ‘ SAMUEL F. BASHARA.