US2273342A

US2273342A - Pump jack

Info

Publication number: US2273342A
Application number: US215973A
Authority: US
Inventors: Victor E Baum
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-06-27
Filing date: 1938-06-27
Publication date: 1942-02-17
Anticipated expiration: 1959-02-17

Description

Feb. 17, 1942. v E BAUM v 2,273,342

PUMP JACK r v Filed June 27, 1958 3 Sheets-Sht l Feb. 17, 1942.` v, E BAUM 2,273,342

PUMP JACK Filed Juri@ 27, 19.38 3 sheets-sheet 3 Patented Feb. 17, 1942 UNITED STATES PATENT OFFICE PUMP JACK Victor E. Baum, Tulsa, Okla.

Application .lune 27, 1938, Serial No. 215,973

14 Claims.

This invention relates to new and useful improvements in pump jacks.

This application is led as a continuation-inpart of my copending application filed August 29,

1936i, Serial NO. 98,593.

head has the usual connecting elements sus-` pended therefrom; with means for adjusting the head vertically with relation to the kpump rods, which adjustment compensates for irregularities or imperfections in the beam, whereby a true vertical lift of the pump rods is produced.

Another object of the invention is to provide an improved pump jack wherein the beam is connected to the pump rods by a pair of flexible elements which are individually and adjustably fastened to the bearn, whereby variations in the elements, due to stretching or from other causes, may be taken care of also whereby the load on said elements is equalized, thereby resulting in an equal and smooth upward pull on the rods.

A particular object of the invention is to provide an improved pump jack including a walking beam having a cradle member aixed thereto, and a head mounted onsaid cradle; the cradle and head having curved contacting surfaces, whereby the head may be swung on the beam to vary the position of the head with relation to the vertical axis of the beam.

A further object of the invention is to provide an improved device of the character described, wherein the walking beam is mounted on a stationary base with improved means for adjusting the beam on said base, whereby the beam may be positively alined vertically with the well rods. l

A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein: y

Figure 1 is a side elevation of a pump jack, constructed in accordance with the invention,

Figure 2 is a transverse, vertical, sectional View taken on the line 2--2 of Figure 1,

Figure 3 is a vertical, sectional View taken on the line 3--3 of Figure 2,

Figure 4 is a plan view of the base plate which supports the walking beam,

Figure 5 is an enlarged side elevation of the arcuate guide head,

Figure 6 is a front elevation thereof,

Figure 7 is a transverse, vertical, sectional View taken on the line 'I--l of Figure 5,

Figure 8 is an enlarged view of the upper por tion of the guide head, with parts thereof in section,

Figure 9 is a horizontal, cross-sectional view taken on the line 9 9 of Figure 8,

Figure 10 is a plan view of the guide head,

Figure 11 is a view partly in section and partly in elevation and viewing the upper portion of the guide head from the front thereof,

Figure 12 is a partial isometric view of the upper portion of the guide head,

Figure 13 is an isometric View of the lifting wedge block, and

Figure 14 is a partial isometric View of one of the blocks which receives the upper end of the cable.

In the drawings, the numeral lil designates a base having upright, inclined legs I I. The lower ends of the legs are embedded in a concrete, or other permanent foundation I2, and converge toward their upper ends. A supporting plate I3 having depending anges which overlie and are secured to the upper ends ol' the legs has a pair of bearing collars I4 mounted thereon. The collars I4 are spaced from each other and a transverse pin or shaft I5 has its ends journaled in the collars. The collars are adjustably mounted on the plate and this mounting is clearly shown in Figures 2 to 4. Since each collar is mounted in an identical manner, it is believed that a description of one will suffice.

Below each bearing collar I4, the plate is formed with a pair of slots I which have a general rectangular shape and which are spaced from each other. Each collar is provided with depending lugs Il which have a loose nt within the slots, whereby the collar may move laterally on the plate. An elongate adjusting screw I8 is threaded through the flange of the plate and also through a flange I9 which is formed integral with the plate adjacent the opening I 5. The inner end of each screw extends into its respective slot and engages the depending lug I'l of the collar I4. A suitable lock nut 2G is threaded onto each screw I8 adjacent the flange I9 and is employed to hold the screw in various adjusted positions. With the above arrangement, it is manifest that the lugs I'I of each collar are confined between the lateral screws and by properly adjusting said screws, the collars may be moved laterally on the supporting plate I2. For holding the collars in the positions to which they may be moved, bolts 2| extend through lateral base flanges I4 and also through slots 22 provided in the plate I3 and these bolts receive nuts (not shown), whereby the collars may be frictionally clamped in position on the plate. It is noted that the diameter of the bolts is less than the width of the slots to permit the lateral movement of the collars on the plate.

An elongate I-beam 23 is mounted to swing on the base, being supported on the transverse pin I5. The beam has a bearing collar 24 bolted to its underside at its central portion and the pivot pin I extends through this collar. The collar 24 is conned between the bearing collars I4 (Figure 2) and, obviously, the beam 23 may swing on the pin. Any suitable means may be employed for swinging the beam and a pitman 2 5 and suitable reciprocating rods 25 have been shown (Figure 1); however, it is to be understood that a crank, or other means, may be used.

As the walking beam swings on the pin I5, the ends of the beam travel in an arcuate path and as is the usual practice, an arcuate segmental member or horsehead 26 is mounted on one end of the beam. The horsehead is connected to the pump rods A and serves to maintain a straightline vertical movement of the rods as the beam swings. The mounting of the member or horsehead 26 is an important feature of the invention and as clearly shown in Figure 7, a supporting block or bearing plate 2'I is welded, or other- Wise secured, on the upper flange 23 of the walking beam 23. The upper surface of the block is arcuate or curved.

The horsehead 26 includes a transverse base plate 28 which has its underside curved complementary to the curved surface of the block, whereby the horsehead may slide transversely on said block. Bolts 29 pass through slots 30 in the base plate and extend through openings 3l in the block and flange 23'. Nuts 32 are screwed onto the lower ends of the bolts and, manifestly, when said nuts are tightened against the flange, the contacting surfaces of the base plate and block are tightly engaged and a frictional clamping action which holds the plate in position on the block is obtained. Suitable washers 29' are interposed between the upper surface of the base plate and the heads of the bolts 23.

A pair of arcuate guide members or wings 33 are preferably made integral with the base plate 23 and these members are spaced from each other so as to extend vertically on each side of thel beam 23 (Figure 6). The arcuate wings are braced by suitable integral webs 34 and are disposed so that their major portion depends below the beam although a portion thereof extends upwardly from the plate 2B. The lower ends of the wings are connected by an integral, transversely extending strap 35, while their upper ends are connected by an angular strap 36. The strap is reinforced by a vertical, central web 3l which extends upwardly from the plate 28.

Each arcuate guide member or Wing 33 is formed with a longitudinal groove 38 which extends throughout its entire length and the upper end of each wing is provided with an angular housing 39 which is preferably integral therewith. The housing or sockets are identical and as is clearly shown in Figures 10 and 12, each housing is formed with a vertical slot 4! in its outer wall. The back wall of the housing is removed and a transverse bar 4I which extends between the housings is bolted to lugs 42 extending outwardly from the side walls of the housings. The bar is located at the upper end of the housings and not only braces said housings but also acts to close the upper portion of the rear thereof.

An angular supporting block 43 is insertable Within each housing and has a tapered or conical socket 44 formed in its central portion. A vertical slot 45 extends from the outer surface of the block to the socket and this slot is alined with the slot 40 in the housing, whereby a cable B is insertable into the block, as will be explained.

The base of each housing is extended rearwardly (Figure l2) to provide a flat surface 46 on which a wedge 4'I is movable. The wedge has a slot 48 alined with the slots 4I) and 45 in the housing and block respectively, and the bottom of the block is inclined complementary to the inclination of the wedge, whereby said block is supported on the wedge. Each block is confined within its housing with the rear wall thereof engaging the transverse bar 4I and, manifestly, when the wedge 4'I is moved laterally, the block is raised and lowered in the housing.

For imparting movement to the wedges and for locking the same in various positions, the extended bottom 46 of each housing is provided with an upright flange 49 which flange is in substantial alinement with the flange of the angular connecting strap 36 which extends between the guide wings or members 33. Suitable vertical webs 50 which are a continuation of the sides of the housing connect the housing and flange 49 and also act to guide the wedge 41 in its movement. An adjusting screw 5I is threaded through a collar 52 which is mounted in the flange 49 and the inner end of the screw is rotatably conned in a socket 5&3 provided in the wedge. When the screws 5I are rotated, the wedges 4l are moved laterally of the housing and since the blocks 43 are supported on said wedges, a vertical movement is imparted to the blocks within the housings 39, whereby the conical or tapered sockets 44 in said blocks are raised or lowered vsith relation to the guide wings or members For connecting the horsehead 26 with the well pump rods A, a pair of flexible elements 54, such as cables, are employed. Each cable is disposed in the groove 38 of one of the guide wings 33 and the upper end of each cable has a tapered thimble secured thereto. The thimble is arranged to seat within the tapered seat 44 of the block 43 which is located in the housing 39 at the upper end of the guide member and, thus, the cables 54 are individually suspended from the horsehead, each cable extending downwardly through one of the grooves 38. The cables are therefore spaced from each other and have their lower ends secured to a cross-head 53 which is fastened to the upper end of the pump rods A. In this manner, the rods which extend axially through the well tubing are fastened to the end of the walking beam and when said beam is swung, the rods are reciprocated. By individually suspending the iiexible connecting elements, any variation in the length of the elements may be taken care of so as to equalize the loa-d onv the elements. For example, one of the cables may stretch and beV slightly longer than the other, which would result in an unequal strain on said cables and an unequal pull on the cross-head 55 and rods A. In such case, the wedges may be readily adjusted by manipulating the wedges 41 through the medium of the adjusting screws 5l. The screws are readily accessible and may be rotated with an ordinary wrench, which eliminates theA necessity of employingr special tools.

From the foregoing, it will be seen that a pumping jack is provided which is readily adjustable to compensate for all conditions, whereby exact alinement with the well rodsY may be obtained. In the event that the foundation and base are set slightly out of alinement with the pump rods A, the adjusting screws I8 may be manipulated to move the beam 23 laterally on the base so that its longitudinal axis is alined with the rods in a vertical plane. It has been found that even though the beam is properly alined with the rods A, a misalinement of the rods and horsehead 25 may occur. Such misalinement may be due to irregularities or imperfections, occurring during manufacture, in the ange 23' of the beam, which irregularities pre- :V

, be moved transversely of the beam, whereby the guide wings or members 33 may be vertically alined with the rods. After the adjustment is made, the bolts are tightened, which clamps the head rmly in position on the beam. After the foregoing adjustments have been made and the head 26 is in perfect alinement with the rod, the cables 54 are mounted on the head. These cables are insertable through the slots 49, and

48 in the housings 39, blocks 43 and wedges 41,

respectively, and the thimbles 55 at the upper ends of said cables are placed in the sockets 44 of the blocks, after which the Wedges are adjusted so that the cables are of exactly the same f length, whereby an equal load is placed on said cables during the pumping operation. With the various adjustments, all conditions may be compensated for and a true vertical lift on the rods obtained. This not only increases the pumping efficiency but reduces wear on the rods, packing and other parts of the pumping equipment. The adjustments are quickly and easily made as the various adjusting screws are readily accessible and no special tools are required.

The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made, within the scope of the appended claims, Without departing from the spirit of the invention.

What I claim and desire to secure by Letters l porting surface which is engaged by the arcuate segment for supporting said segment, means for adjustably mounting the segment on the supporting member, whereby the segment may be moved to various positions transversely of the beam. to compensate for variations in the beam and to vertically aline the segment with the pump rodsof a well, means for fastening the segment in a desired adjusted position, and means for connecting the pump rods to the segment, whereby swinging of the beam and segment reciprocates the rods.

2. A pumping jack including, a pivoted beam, a support fastened to one end of the beam, an arcuate segment mounted on the support and capable of lateral swinging movement thereto, means for adjustably mounting the segment on the support whereby the segment may be moved to various positions transversely of the beam to compensate for variations in the beam and to vertically aline the segment with the pump rods of a well, means for fastening the segment in any adjusted position, and flexible elements overlying the segment and connecting the segment with the pump rods, said elements being individually fastened to the segment.

3. A pumping jack including, a pivoted beam, an arcuate segment mounted on the beam and arranged to be secured in various positions in a `vertical plane, a pair of flexible connections,

means for adjustably fastening one end of each connection to the segment whereby the connections overlie the segment, and means for attaching the other ends of the connections to the pump rods of a well, the mounting of the segment on the beam making it possible to vertically aline the segment with the rods irrespective of the irregularities in the beam and rods and to fasten said segment in such alined position.

4. A pumping jack including, a pivoted beam, a supporting block secured to one end of the beam and having its upper surface curved transversely of the beam, an arcuate segment having a supporting element which is curved complementary to the curvature of the plate, whereby the segment may be swung on the beam in a plane at a right angle to the longitudinal axis of the beam, and means for fastening the segment in any one of its adjusted positions on the plate.

5. A pumping jack including, a pivoted beam, a supporting block secured to one end of the beam and having its upper surface curved transversely of the beam, an arcuate segment having a supporting element which is curved complementary to the curvature of the plate, whereby the segment may be swung on the beam in a plane at a right angle to the longitudinal axis of the beam, means for fastening the segment in any one of its adjusted positions on the plate, and a pair ofv flexible elements secured to the segment and having their lower ends arranged to be fastened to the pump rods of a well, whereby said rods are connected to the beam and reciprocated thereby.

6. A pumping jack including, a pivoted beam, a supporting block secured to one end of the beam and having its upper surface curved transversely of the beam, an arcuate segment having a supporting element which is curved complementary to the curvature of the plate, whereby the segmentl may be swung on the beam in a plane at a right angle to the longitudinal axis of th'e beam, means for fastening the segment in any one of its adjusted positions on the plate, a pair of flexible elements secured to the segment and having their lower ends arranged to be fastened to the pump rods of a well, whereby said rods are connected to the beam and reciprocated thereby, and means for individually adjusting the flexible elements with relation to the segment to equalize the load thereon.

7. A pumping jack including, a support, a mounting secured on said support and movable to various lateral positions thereon, means for holding said mounting in its various positions, a beam pivoted in the mounting and arranged to swing on the support, a supporting block secured to one end of the beam and having its upper surface curved transversely of the beam, an arcuate segment having a supporting element which is curved complementary to the curvature of the plate, whereby the segment may be swung on the beam in a plane at a right angle to the longitudinal axis of the beam, and means for fastening the segment in any one of its adjusted positions on the plate.

8. A pumping jack including, a support, a mounting secured on said support and movable to various lateral positions thereon, means for holding said mounting in its various positions, a beam pivoted in the mounting and arranged to swing on the support, a, supporting block secured to one end of the beam and having its upper surface curved transversely of th'e beam, an arcuate segment having a supporting element which is curved complementary to the curvature of the plate, whereby the segment may be swung on the beam in a plane at a right angle to the longitudinal axis of the beam, means for fastening the segment in any one of its adjusted positions on the plate, and a pair of exible elements secured to the segment and having their lower ends arranged to be fastened to the pump rods of a well, whereby said rods are connected to the beam and reciprocated thereby.

9. A pumping jack including, a support, a mounting secured on said support and movable to various lateral positions thereon, means for holding said mounting in its various positions, a beam pivoted in the mounting and arranged to swing on the support, a supporting block secured to one end of the beam and having its upper surface` curved transversely of the beam, an arcuate segment having a supporting element which is curved complementary to 4the curvature of the plate, whereby the segment may be swung on the beam in a plane at a right angle to the longitudinal axis of the beam, means for fastening the segment in any one of its adjusted positions on the plate, a pair of flexible elements secured to the segment and having their lower ends arranged to be fastened to the pump rods of a well, whereby said rods are connected to the beam and reciprocated thereby, and means for individually adjusting the flexible elements with relation to the segment to equalize the load thereon.

10. A pumping jack including, a pivoted beam, a supporting block secured to one end of the beam and having its upper surface curved transversely of the beam, and an arcuate segment having a transversely extending supporting element which element overlies the block and has its underside curved complementary to and engaging the curved surface of said block, wh'ereby the segment is suspended from the beam and is capable of being swung with relation to the beam and in a plane at substantially a right angle to the longitudinal axis oi the beam.

11. A pumping jack including, a pivoted beam, an arcuate segment mounted on one end of the beam and arranged to swing therewith, a pair of flexible elements overlying the segment, vertically movable means for fastening the upper` ends oi the elements to the segment, and laterally movable means coacting with said fastening means for varying the position of the elements relative to the segment to compensate for dierences in the length of said elements.

12. A pumping jack including, a pivoted beam, an arcuate segment mounted on one end of the beam and arranged to swing therewith, a pair of exible elements overlying the segment, means for fastening the upper ends of the elements to the segment, and a movable wedge block associated with the fastening means for each element for moving said means relative to the segment, whereby the position of the elements on the segment may be varied.

13. A pumping jack including, a pivoted beam, an arcuate segment mounted on one end of the beam and arranged to swing therewith, the segment having a pair of spaced sockets in its upper end, a pair of flexible elements overlying the segment, supporting means secured to th'e upper end y of the elements and movable within the sockets for suspending the elements from the segment, and a movable wedge block associated with the fastening means for each element for moving said means within its socket to change the relative position of the element on the segment.

14. A pumping jack including, a pivoted beam, an arcuate segment mounted on one end of the beam and arranged to swing therewith, the segment having a pair of spaced sockets in its upper end, a pair of iiexible elements overlying the segment, supporting means secured to the upper end of the elements and movable within the sockets for suspending the elements from the segment, a movable wedge block associated with the fastening means for each element for moving said means within its socket to change the relative position of the element on the segment, and means for maintaining the wedge blocks in various adjusted positions.

VICTOR E. BAUM.