US1986012A

US1986012A - Pump actuating mechanism

Info

Publication number: US1986012A
Application number: US657530A
Authority: US
Inventors: Edgar W Patterson
Original assignee: C M O LEARY; CHARLES M O LEARY JR
Current assignee: C M O LEARY; CHARLES M O LEARY JR; CHARLES M O'LEARY JR; Cm O'leary
Priority date: 1933-02-20
Filing date: 1933-02-20
Publication date: 1935-01-01
Anticipated expiration: 1952-01-01

Description

` Jan. 1, 1935.

E. W. PATTERSON Fild Feb. 20, 1933 -hz j l/f' 6( '2/ fsf; f7 5 va /3\ @wf o o f s? a O O o O O 2 Sheets-Sheet 1 Jan. 1, 1935. E. w. PATTERSON 1,985,012

PUMP ACTUATING MECHANISM Filed Feb. 20, 1933 2 Sheets-Sheet 2 Patented Jan. 1, 11935 "UNITED STATES 1,986,013 PUMP Ac'rUA'rrNG MEcnAmsM Edgar W. Patterson, Long Beach, Calif., assignor, by direct and mesne assignments, oi' one-hal! to Charles M. OLeary, Jr., and one-half to C, M. OLeary, both ot Los Angeles, Calif.

Application February 20, 1933, Serial No. 657,530

11 Claims.

This invention relates to a pump actuating mechanism, and relates more particularly to a mechanism f oractuating a well pump. It is a general object of the invention to provide a practical and effective well pump actuating mechanism that is of simplified and improved construction.

Another object of the invention is to provide a well pump actuating mechanism that may be embodied in' a walking beam unit .suitable for use in various situations, 6T that may be readily applied to an already installed walkingbeam unit.

A Another object of the invention is to provide a mechanism of the' character mentioned for actuating the reciprocating type of Well pump in which all of the parts are directly connected or associated with the walking beam and its Samson post or supporting member.

It is another object of the invention to provide a pump actuating mechanism of the character mentioned in which the heaviest or one of the heaviest units or parts of the mechanism is car- Y character mentioned in which the power unit is carried by the Samson post in a simple and practical manner.

Another object of the invention is to provide a pump actuating mechanism of the character mentioned, including a novel and effective brake means operable to stop the walking beam in any position.v

A further object of the invention is to provide a pump actuating mechanism that is efficient in mvention, the Samson post 10 may be conoperation and particularly simple and inexpensive of manufacture.

The various objects and features of the inven'l tionwill be better and fully understood from the following detailed description of a typical form and application of the invention throughout which description reference is had to the accom-L panying drawings, in which:

Fig. 1 is a side elevation of the mechanism provided by the invention. Fig. 2 is an enlarged arc on the forward end of the walking beam, be.

ing a view taken as indicated by line 3-3 on 1. Fig. 4 is an enlarged fragmentary side elevation taken substantially 'as indicated by line 4-4 on Fig. 2. Fig. 5 is an enlarged side elevation of a portion 'of the device. Fig. 6 is an enlarged fragmentary, detailed sectional view taken as indicated by line 6-6 on Fig. 4. Fig. 7 is a fragmentary end elevation taken as indicated by line 7-'7 onFig. 5. Fig. 8 is an enlarged fragmentary sectional view taken as indicated by line'8-8on Fig. l, and Fig. 9 is a vertical sectional view taken as indicated by line 9-9 on 8.

The pump jack or pump actuating mechanism provided by the present invention may be varied considerably to adapt it for use in various situations, or for use `in connection with different .classes of equipment. .'I'he invention contemplates the provision of a complete'pump actuating unit including a walking beam'for reciprocating the pumpirod and the Samson post supporting the walking beam, and contemplates the application of various parts ofthe mechanism to a previously constructed or installed walking beam unit. Throughout the following detailed disclosure, I will describe a typical form of the invention in which the walking beam unit may be considered as an element or part of the mechanism as initially constructed. It is to be understood that the invention'is not to be taken |as limited or restricted to the specific form or details about to be described, but is to be taken as includingany features or modifications that may fall within the scope of the claims.

The form of the invention illustrated in the drawings, includes, generally, the Samson" post 10, a` walking beam 11 pivotally mounted on the upper end of the post 10, a vpower means 12 adjustably mounted on the Samson post 10, and an operating drive or connection 13 between the power means 12 and the walking beam 11.

In accordance with the broader aspects of the structed and mounted as desired or found practical. In the embodiment of the invention illustrated in the drawings, the unit includes a frame or base 14 carrying the Samson post 10. The base 14 may include spaced beams 15 adapted to be arranged on a floor'gF or other suitablev support. The Samson post may be in the form of a length of steel I beam as illustrated4 in the drawings. The lower end\ of the Sanison" post 10 is attached to the beams 15 of the base, andprojects vertically upward from-'the base. Braces 16 may extend upwardly from the opposite ends of the base 14 to the upper end portion of the "Samson post 10 to brace and lend rigidity to the structure.

The walking beam 11 is mounted on the upper end of the Samson post 10 to pivot or oscillate about a horizontal axis. The walking beam 11 is provided to reciprocate the pump rod R in a manner to be subsequently described. The walking beam 11 may be formed of a length of steel I beam arranged to have its end flanges 17 form the upper and lower sides of the walking beam. The pump actuating unit or mechanism is positioned at the well so that the walking beam 11 has its inner arm 18 projecting over the head or upper end of the well as clearly illustrated in Fig. 1 of the drawings. The outer arm 19 of the walking beam may be somewhat longer than the inner arm 18; Suitable means is provided for pivotally attaching the lower flange 17 of the walking beam to the upper end of the Samson post "10 so that the walking beam may oscillate about ahorizontal axis. The pivotal mounting illustrated in the drawings includes a bearing member 20A on the upper end of the Samson" post 10 and a saddle 21 on the lower flange 17 of the walking beam. The bearing member 20 has a block or tongue 22 projecting downwardly between the spaced side flanges 23 of the Samson post 10 and attached to the said flanges by bolts 24. spaced upwardly projecting side parts 25. The

. saddle 21 is suitably attached to the lower flange 17 of the walking beam and has a block or tongue 26 projecting downwardly between the side parts 25 of the bearing member 20. A shaft or pin 27 extends through aligned horizontal openings in the side parts 25 and the tongue 26 to pivotally connect the walking ,beam 11 to the Samson post 10. The pvot pin 27 is tubular, having a longitudinal opening 28 extending through it from one end to the other.

The connection between the walking beam 11 and the string of pump rods R includes a head or arc member 30 on the outer end of the inner arm 18 of the walking beam. The arc member 30 has a convex outer face curved about the pivotal axis of the walking beam 11. A cable 32 or other flexible member extends through a flanged projection 33 at the upper end of the curved face 3l and has two spaced parts extending downwardly from the projection. 'Ihe cable 32 engages the curved outer face 31 of the arm member and its lower ends are connected to the upper end of the.

pump rod R by a suitable clamp or connecting device 34. Spaced parallel ribs or flanges 35 project from the curved fame 31 of the arc member to form channels for guiding the cable 32. The flexible cable 32 operating on the curved face 31 provides for the vertical reciprocation of the rod R without bending or flexing its upper portion.

It is a feature of the invention that the arc member 30 is attached to the walking beam so that it may be easily and quickly swung out ofl vertical alignment with the upper end of the well to allow tools, etc., to be freely passed into and out of the well'. A central vertical web 81 is provided on the rear side of the arc member 30 and has a recess or notch 82 receiving the end portion of the walking beam arm 18. Flanges 83 are provided along the upper and lower edges of the notch 82 to cooperate with the flanges 17 of the walking beam. Two sets or

pairs

84 and 85 of bolts extend through openings in the flanges 17 and 82 to removably attach the arc member 30 to the walking beam 11. The

bolts

84 and 85 are The bearing member 20 is yoked, having disposed at opposite sides of the web 81. When it is desired to swing the arc member 30 out of vertical alignment with the upper end ofthe well, the two outer bolts 84 and one of the inner bolts are removed, leaving a single inner bolt 85. The arc member 30 is then free to pivot or hinge on the remaining bolt 85 and may be easily swung to a position at to the longitudinal axis of the walking beam 11. When' attached to the arm 18 of the walking beam by the single bolt 85, the arc member 30 is substantially statically balanced so that it may be very easily swung to any desired position. It willwbe apparent vhow the arc member 30 may be easily and quickly swung from its normal operative position to a position out of vertical alignment with the upper end of the well so that rods, tools, etc., may be freely `passed into vandout of the well.

The power means 12 is provided to operate or oscillate the walking beam 11 through the transmission or operatingl drive 13. In accordance with the invention, the power means 12 is carried by the Samson post l0. The power means 12 includes a suitable electric motor 36. Spaced beams or carriers 37 are attached to the vertical side flanges 23 of the Samson post 10 for Vertical adjustment thereon, and project horizontally from the post to form a shelf or mounting is preferably horizontal and in the same vertical plane as the pivot pin 27. A suitable brace or braces 39 may be attached to the under side of the beams 37 and may have its lower end attached to the Samson post l0.

The invention may include a stop means or brake means in connection with the power means 12 that is operable to stop and hold the walking beam 11 at any -desired position. The brake means include blocks or shoes 40 for engaging or braking with a combination fly-wheel and drum 41 on the motor shaft 38. The brake shoes 40 are carried by lever members 42 pivoted adjacent their lower ends as at 43. An operating handle or lever 44 engages the outer side of one member 42 and is connected with the other member 42 by a rod 45. A spring 46 surr'ounds the rod 45 and is arranged under compression between-the two members 42 to normally yieldingly hold the brake shoes 40 out'of engagefor the motor 36. The shaft 38 of the motor 36 It Will bev Cil the walking beam 11 in any desired position v 'immediately afterthe motor 36 has been stopped or to stop the Walking beam in an emergency before stopping the motor. A The drive or operative connection 13 between the power means l2 and the walking beam 11 ,operatively connects the walking beam 11 with the motor 36 so that the motor 36 oscillates the walking beam 11 and thus reciprocates the pump rod R. The means 13 includes a pinion 50 on the inner end of the' motor shaft 38; A shaft 51 is rotatable in the opening 28 of the pin 27- and projects from the opposite ends of the pin.- A comparatively large gear 52 is prov ide'd on a projecting end of the shaft 51'and lfor receiving a pin 68.

meshes with'the pinion 50 on the motor shaft.

In accordance with .the invention,` oneor more 'the drawings, there are two sprockets 53, one

at each side of the walking beam 11. Atransverse shaft 54'supported by suitable bearings 55 carries the two sprockets 53. In the preferred construction, the sprockets 53 are provided on the outer arm 19 of the walking beam at a lpoint spaced a substantial distance from the pivotal axis of the beam. Comparatively smallsprockets 56 are provided on the end portions of the shaft 51, and chains 57 pass over each pair of sprockets 53 and 56.' The pinion 50 and -gear 52 and the sprockets 56 and 53 are related to provide for a considerable reduction in speed between' the motor. shaft 38 and the large sprockets 53.

The invention includes means whereby rotation of the sprockets 53 causes oscillation or operation-of the walking beam 11.v

Crank links or connecting rods 60 are pivotally connected to the sprockets 53 and a suitable relativelyA fixed object. The rods 60 are connected-to the sprockets 53 at points offset from the axes of the sprockets. In the embodiment of the invention illustratedin the drawings, the lower ends of the rods 60 are pivotally connected to the base 14. L heads 61 are provided on the lower end portions of the rods 60 and are adapted' to pivot on a pin 62 carried in a'bearing 63 on the base beam 15. In the preferred construction, pivotal connections are provided between the rods 60 Aand the L heads 61. The lower ends of the rod's 60 are `yoked as illustrated in Fig. -9. andpivot pins 90 pass through 4openings in the upper arms of the L heads 61 and' the yoked `ends of the rods 60 to pivotally connect the rods and heads.` Yoked heads 64 are provided on the vupper ends of the rods 60 to receive the tongues 65 of connecting members or hub members 66.v Pivot pins 67 extend through openings in the yokedA heads 64 and tongues v65 to pivotally connect the rod with the members 66. Themembers 66 carry pins 68 adapted to extend through openingsV 69 in the sprockets 53.

In accordance with the invention, there is a plurality of openings 69 provided in each sprocket 'I'he several openings 69 in each sprocket 53 are spaced different distances from the axis of rotation of the sprocket.-

By' arranging the pins 68 in the different openings 69, the walking beam 1l maybe given strokes of different lengths. l Itwill'be apparent. how the pivoted rods 60 in 4connecting the rotating sprockets 53 with the stationary base 14, causes oscillation of the walking beam'll during the rotation `of the sprockets 53. The-pivotal connections on the opposite endsof-the rods 60 are such that the rods will not bind or interfere with the free operation of the mechanism inthe event that the walking beam 11 and/or sprockets 53 carried bythe beam are slightly I out of alignment with the base 14.

The sprockets 53 on the outer arm 19 of the walking beam 11 operate to counter-balance the weight of the string of pump rods R and the operated parts of the well pump. The invention includes a counter balancing means in addition" to the sprockets 53; A pluralityj of removable weights 70 is provided-on the outer end portion of the arm. 19 of the walking beam 11. The

weights70' are separately or individually removcluding, 'a pivotally mounted walking beam,. a,

able from the walking.` beam 11 so that the string of pump rods R may be properly or accurately counter-balanced. In the preferred form of the invention, the counter-balancing weights 70 vare sectional, each being formed of two parts or sections connected by flange and bolt connections 71. The several weights 70 are arranged in a group on the-walking beam arm 19 at a point outward of the pair of sprockets 53. Outwardly facing abutments or stops 72 are"provided on the walking beam arm 19. to limit the inward' movement of the weights 70. The counter balancing weights 79 are maintained in position by nuts 73y threaded on stems 74 and acting through secondary or fractional close balancing plates 75 to clamp the group of weights 70 together against the stops 72. A I

It is believed that the operation of the pump jack or pump actuating unit provided by the invention will -be readily apparent from the. foregoing detailed description.` 'I'he motor 36 normally operates continuously to rotate the sprockets 53' through the gear and chain drive "described above. 'I'he drive is such that there is a substantial reduction in speed between the motorv shaft 38 and the sprockets 53. The rods 60 connecting the rotating sprockets 53 with the stationary base 14 provides for the oscillation of the l walking beam 11 during rotation of the sprockets. The provision of the plurality of openings 69 in each sprocket 53 'for receiving the pins 68 allows for the changing in the length of the stroke The openings 69. are

ofthe walking beam 11. spaced different distances from the axis of rota,- tion of the sprockets 53 andthe arrangement of. the pins 68 in the different openings 69 changes the stroke of the walking beam 11. The unit is particularly simple and compact in construction asall of its parts are directly lassociated with the .S(amson.post and walking beam. 'I'he power means.l2 is adjustably supported on the Samson post 10 lin a simpley effective manner, whilev the drive 13 for operating the walking beam 11 is associated with the pivotal mounting of the beam and with the outer arm 19 of the beam'.

The sprockets 53, in being carried on the outer arm 19 of the walking .beam operate toaid in counter-balancing the string of pump rods R. In practice, the sprockets 53 may be comparatively heavy and thus reduce the number of counter balancing'weights necessary on the outer arm of the walking beam.. 'I'he pump actuating mechanism may be readily installed ,as a unit and occupies a. minimum amount of 4space at the well.

The mechanism is eiicient and inexpensive of operatiomand operates smoothly and effectively.

Having described only a typical preferred form and application of my invention, I do not Wish to restrict myself to the specic form. and application set forth, but wish to reserve to myself any chang-es or variations that may appearV to those skilled in the art or fall withinthe scope of the following claims.. A

Having described. my invention, I claim: i

1. A pump actuating mechanism including, a

Vwalking beam, a post supporting the walking beam, power means on the post, and an operating beam, the said drive including a sprocket carried by thexwalking beam at a point spaced from the pivotal axis of the walking beam, and anbpera'- tive connection between the power means and sprocket.

2. Al mechanism of the character described in- Vdrive between the power means and the walking v` power means, and a' drive between the power means and the walking beam including, a sprocket carried by the beam at a point spaced from its pivotal axis,4 and a driving connection between the power-means and sprocket.

3. A mechanism of the character described including, a pivotally mounted walking beam, a power means, and a drive between, the power means and the walking beam including, a r0- tatable member'on the walking beam at a point spacedfrom its pivotal axis, and a rod pivotally connected to 'a relatively fixed object and pivotally connected to the member at a point spaced from its axis of rotation.

4. A mechanism of the character describedincluding, a pivotally mounted walking beam, aA

^ walking beam, means pivotally supporting the walking b eam, and means for operating the walking beam, the last mentioned means including a stationarily mounted motor, and a rotating sprocket on the walking beam driven by the motor.

6. A pump actuating mechanism including, a post, a walking beam, means pivotally mounting the walking beam on the post, a motor on the post, and a drive between vthe motor and the walking beam including a shaft associated-with the said means and rotated by the motor, a sprocket on the shaft, a larger sprocket mounted on the walking beam a substantial distance from said means, an element operatively connecting the two sprockets, anda rod pivotally connected to a relatively fixed object and pivotally connected to the said larger lsprocket at a point offset from its axis of rotation.

'7. A pump actuating mechanism including,v a post, a walking beam, means pivotally mounting the walking beam on the post, a motor on the post, andfa drive between the' motor and the walking beam including a shaft associated with the saidmeans, a speed reducing drive between the motor and the shaft, a rotatable member on the walking beam at a point removed from said means, a rod pivotally connected to a relatively fixed objectand pivotally connected to the member at a point spaced from its axis of rotation, and a drive between the shaft and member.

8. A pump actuating mechanism including, a post, a walking beam, means pivotally mounting the walking beam on the post, a motor on the post, and a drive between the motor and the Walking beam including a shaft associated with the said means, av speed reducing drive between the motor and the shaft, a rotatable member on the walking beam at-a point removed from said means, a rod pivotally connected to a relatively fixed object and pivotally connectedto the member at a point spaced from its axis of rotation, and a speed reducing drive between the shaft and member.

9. In a pump actuating mechanism of the character described, a walking beam, an arc member for carrying a flexible element to be connected to the part to be actuated, andmeans for removably attaching the arc member to the walking beam in a manner so that it may be swung out of alignment with the said part to be actuated, said means including spaced removable bolts passing through openings in the member and beam transverse of the longitudinal axis of the beam, one of the bolts being located adjacent the center of gravity of the arc member so that the arc member is substantialy statically balanced when pivoted on said bolt.

v 10. A mechanism of the character described including, a pivotably mounted walking beam, a power means, and a drive between the power meansv and the beam including a rotatable member on the beam at a point spaced from the pivotal .axis of the beam, a drive between the power means and the member, and a rod pivotally connected to a relatively fixed object and pivotally connected to the member at a point spaced from its axis of rotation.

11. A rmechanism of the character described including, a pivotably mounted walking beam, one arm of the beam being adapted to operate a pump part, a power means, and a drive between the power means and the beam including a rotatable member on the other arm of the beam at a point spaced from the pivotal axis of the beam, the member being of substantial weight to form avcounter balance for the pump part, and a rod pivotally connected to a relatively fixed object and pivotally connected to the member at a point spaced from its axis of rotation.

EDGAR W. PATTERSON.