Патент USA US2409104код для вставки
Oct- 3, 1946- J. D. CAVANESS 2,409,104 SUCKER ROD TIGHTENER Filed Feb. 26, 1945 3 Sheets-Sheet l 54 55 ? ci?.閥awaneas 011?; 3, 3945, J. D. cAvANEss 2,40%,304 SUCKER ROD TIGHTENER ?Filed Feb. 26, 1945 :s Sheets-Sheet s W 2,409,104 Patented Oct. 8, 1946 UNITED STATES PATENT GFFlCE 2,409,104 SUCKER ROD TIGHTENER James D. Cavaness, Arlington, Tex. Application February 26, 1945, Serial No. 579,877 5 Claims. (01. 255?14) 1 This invention relates to well pumping appa ratus and more particularly to an improved tight ener for sucker rods. . An object of this invention is to provide an? automatically operable means mounted on and around the polished rod for automatically rotat ing sucker rods clockwise in one cycle of move ment of the rods. Another object of this invention is to provide a device of this kind which is active on the upward . stroke of the polished rod for progressively rotat ing the rods. A further object of this invention is to provide a device of this kind which is simple in its con- struction and positive in its action within certain adjusted load ranges for progressively rotating the sucker rods as the rods are lifted upward. Further object of this invention is to provide a device of this kind which includes a housing 2 lowering the housing H to effect vertical recip rocation of the polish rod H). The housing H includes opposite side walls l1 and I8 and a top wall Hi. The lower end of the housing I l is open and is formed with a downwardly tapered or flared ?ange l9?, having a cylindrical ?ange 29 formed integral therewith, so as to provide a rel atively large diameter circular chamber 2! in the lower end of the housing. The top wall i9 of the housing ii is formed with an opening 22 within which a plate 23 is loosely mounted. The plate 23 has formed integral therewith a bushing M which extends partly within the housing II and partly above the top wall IE, and is formed with an opening 25 through which the rod Hl loosely engages. The upper end of the bushing 24 is formed with a ball race 26 on which anti-friction balls El- engage. A second anti-friction element 28 is disposed about the rod iii, being formed secured about the rod and provided with pawl 20 with a ball race 29 and a ball retaining ring 33 is interposed between the two races '28 and 29. and ratchet means active under the weight of A split clamp 3| is secured by fastening mem the lifting of the sucker rods to progressively bers 32 to the rod it above the anti-friction rotate the same in one direction. member 28 and is adapted to hold the rod IQ To the foregoing objects, and others which may hereinafter more fullyappear, the invention 25 against lengthwise movement with respect to the anti-friction bearing formed by the bushing 24, consists of the novel construction, combination the collar 23 and the balls 27. and arrangement of parts, as will be more speci? In order to provide a means whereby the rod cally referred to and illustrated in the accom Ill will be rotated as the rod is elevated or raised, panying drawings, but it is to be understood that I have provided at opposite ends of plate 23 a pair changes, variations, and modi?cations may be of ledges 33, having inclined lower surfaces 34 resorted to which fall within the scope of the on which plates 35 are secured by fastening de . vices 35. A horizontal ledge-3?! is carried by each In the drawings: end wall of the housing I I, being formed with a Figure 1 is a detail side elevation partly broken away and in section of a polished rod tightening 35 horizontal upper surface 38 on which a bearing plate 35} is secured by fastening devices 49. A and rotating device constructed according to an wedge 閘 is interposed between the two plates embodiment of this invention. 35 and 39 and anti-friction rollers 42 are inter Figure 2 is a vertical sectional view taken sub posed between the upper inclined side of wedge stantially on the line 2-2 of Figure 1. Figure 3 is a sectional view taken on the line 40 Ill and plate 35. Anti-friction rollers 43 are inter posed between the lower horizontal side 44 of 3-?3 of Figure 1. wedge ill and lower horizontal plate 39. Figure 4 is a fragmentary sectional view taken A rock lever � is rockably carried by a pivot on the line 4?4 of Figure 1. 46 and the upper end 4? of rock lever 55 is dis Figure 5 is a sectional view taken on the line 45 posed in a position for engagement with the large 5-5 of Figure 2. end of wedge Ill, so that when the wedge moves Referring to the drawings, the numeral ID des to the left, as viewed in Figure 4, rock lever 45 will ignates an elongated polished rod of conventional have the lower end thereof shifted to the right. construction which is in turn attached to sucker A pivoted pawl or dog 138 is rockably mounted on rods extended into a well. A housing generally designated as H is disposed about the rod I3 and 50 a pivot 49 engaging through the lower end of rock lever 45 and includes a weighted free end 50. A includes a pair of oppositely extendingtrunnions serrated disc or plate 5! is disposed within the 12 which are carried by the opposite end walls [3 annular ?ange 2%], the teeth 52 of disc 5| being and M. The looped lower ends N3 of a clevis 16 adapted to be engaged by pawl t8; Disc 51 in are adapted to engage the trunnions I2, and are invention as claimed. connected to the walking beam for raising and 55 cludes a split bushing 53, which is clamped by 2,409,104 3 4': means of fastening members 513 to polish rod I8. Disc 5! is held against reverse rotation by a re movement with respect to housing II by means of a plate 69 secured by fastening members 18 to ledge 3'! and an adjacent end wall. The upper end 4-?! of lever 45 is limited in its outward movement by means of an adjusting bolt 'H threaded through housing H, so that the rocking movement of lever 45 can be regulated to the desired degree. silient holding dog 55 secured by fastening mem bers 58 to the lower side of ?ange l9. Holding dog 55 is adapted to engage teeth 52 of plate 5!, so that disc or plate 5| will be progressively ro tated for rotating rod it under the action of the rocking of lever 155, In order to provide for the movement of wedge fill inwardly with respect to plates 35 and 3S and the idling movement of pawl I have provided a resilient lever operator 5?, which is mounted in a housing 53 carried by an What is claimed is: 1. A sucker rod tightener comprising a hous ing engaging about polish rod, oppositely extend ing trunnions carried by said housing, means engaging said trunnions supporting said hous obtusely disposed arm 59. A cap 851 telescopes over the housing 58 and? confronts the adjacent ing for vertical reciprocating movement, and side of lever 55. Arm 58 is secured to an interf 15 means in said housing for effecting rotation of nally threaded bushing 6!, which is threaded onto an elongated 'tensioning bolt 62, extending said rod in one direction upon upward move downwardly through an opening 53 formed in the top wall 19. Bolt 62 has a collar 5% secured there about within the housing H, so that bolt 62 will be held by cooperation of collar 54 and head 55 against endwise movement, but will be permitted free rotary movement. The vertical position of the resilient member 5?: will provide the desired ment of said housing, said latter means includ ing a pair of oppositely disposed wedge members slidably mounted in said housing, a plate, mov able endwise with respect to said housing and rotatable about said rod, said plate formed with inclined surfaces engageable with said wedge members for sliding said Wedge ?members upon vertical movement of said housing, a pair of rock tension on the lower arm of lever �for auto levers engageable at one end thereof with said matically returning wedge 45 to its innermost wedge members, whereby movement of said wedge position. A vertically disposed ?ange 66 extends inwardly members will rock said levers, a pair of oppo from an adjacent end wall of the housing and provides an abutment for housing 58, so that this of said levers, and a toothed plate loose in said housing will be held against inward movement under pressure of lever 45. In the use and operation or" this device, housing II is disposed about rod iii, with disc 5i secured by? fastening members 5/3 to rod Id. Clamp Si is secured about rod ill by fastening members 32, bearing against anti-friction member Disc 5| is rotatably retained in ?ange all by means of a split retaining ring 6?, engaging in an annular recess 83, carried by ?ange 26. As rod H3 is raised by upward movement of the walking beam or other elevating means, the weight of rod IE] will through bushing 24, which is movable through opening 22 in top wall !9, cause lateral shifting ? of wedges 4! to the left, as viewed in Figure 4. Ledges 33, which are carried by bushing 24 and plate 23, will move inwardly with respect to housing It) and in this manner eiiect rocking of the upper end of lever G5 to the left and the sitely disposed pawls carried by the opposite ends housing and ?xed to said rod, said pawls engag ing said plate to thereby effect the rotation of said plate upon rocking of said levers in one di rection. 2. A sucker rod as set forth in claim 1 in cluding means for yieldably urging said levers for rocking movement in the opposite direction, 3. A sucker rod as set forth in claim 1 in cluding means for yieldably urging said levers for rocking movement in the opposite direction, wherein the tension or" said means urging said le vers may be adjusted by a tensioning bolt, ac~ cessible exteriorly of said housing. ll. A sucker rod as ?set forth in claim 1 includ ing a resilient holding dog carried by said hous ing and engaging with the teeth of said plate, for holding the latter against reverse rotation. 5. A sucker rod tightener comprising a hous ing engaging about a polish rod, means to ver tically reciprocate said housing, means in said lower end thereof to the right. As the lower end housing for effecting rotation of said rod in one of lever �rocks to the right, lever tensioning direction upon upward movement of said hous member 5? will be compressed and pawl 48 will ing, said means including a pair of oppositely rotate disc 51, which is secured to rod iii. As disc disposed wedge members slidably mounted in said 55 rotates holding dog 55 will prevent reverse housing, correlated means loosely carried by said rotation of disc 5!, so that rod iii will be pro housing and ?xed to said rod for effecting slid gressively rotated in one direction during each ing movement of said wedge members upon up upward movement thereof. ward movement of said housing, a pair of rock It will be noted from Figure 2 of the drawings levers engageable vat one end thereof with said that plate 5| is loosely mounted in flange 2%,?so wedge members whereby movement of said wedge that this plate or disc may have sumcient verti members will rock? said levers, and adjusting cal movement within ?ange 2c to permit rela means for limiting the rocking movement of said tive movement of housing i I with respect to bear levers, said latter means including a threaded ing plate 23. This device will provide for the bolt for each lever accessible exteriorly of said automatic rotation or tightening of the polished housing and interiorly engageable with the upper rod, the degree of rotation with each vertical 65 ends of said rock levers, and means actuated by movement of the polished rod being regulated by rocking of said levers in one direction for? ei the length of movement of wedge Iii. Wedge 4!, fecting turning of said rod in one direction. with rollers 42 and 43, are held against inward JAMES D. CAVAI'JESS.