US1793570A - Pump-jack construction - Google Patents

Description

Feb. 24, 1931. u 7 1,793,570

' PUMRJACK CONSTRUCTION File N v 2 1928 :5 Sheets-Sheet 1 Attornqy Feb. 24, 1931.

' T. M. TUTTLE PUMP JACK CONSTRUCTION Filed Nov. 26, 1928 3 Sheets-Sheet 2 Attornqy Pets. 24, 1931. TUTTLE 1,793,520

PUMP JACK CONSTRUCTION Inventor TM. ZZ/f e Ammqy Patented Feb. 24, 1931 Y wrno vreslm forum- MoUnnsoKLAno A PiIMPJAGK"CONSTRUCTION Application fil'e'd- November 26, 1928. Serial No; 321,936. i

The presentv invention relates toimprove- IHBIItS-lHIPHIDP jacks and has reference-more particularly to a ackthat is used in pumping' oil Wells.

\ 1 Y, F One'of the importantobjectsof theapresent invention is to provide a; pump aclr that in-' eludes j a steelframe it' being an additional object to provide a j ackzthat isprovided-With' adjustable bearingsnfor the various parts 'IO thereof. V

= r A further object. is to: provide a pump 3 ack ofthe above mentioned character whereint'he adjustment for the rbearings may be readily and: easilyimade Whenevennecessary.

v Still a. further'object'is-toprovide a pump jack "of the abovenientionedcharacter Which iis siinplein constructiom.inexpensive strong" and durable; and further Well adapted-t0 the purpose-for which: it is designed. i g

Other objects and advantages of th i nvea tion will become apparent from the following; desc'ription'whe'n takenin connectionwith i theaccompanyin'g drawing.

In the accompanying drawings wherein like referencecharacters indlcate corresponding parts throughout the same Figure 1 IS a side elevation of jack embodying my invention.

Figure 2 is a top plan view thereof. Figure 3 is an end elevation.

Figure 4 is a sectional view taken approxithe pump inately on the line l4 of Figure 1 looking downwardly.

Figure 5 is a vertical section taken approximately on the line 55 of the same figure looking in the direction of the arrow.

Figure 6 is a similar section taken approxi-' mately on the line 66 of Figure 1, and

Figure 7 is a detail perspective view of the A substantially inverted U-shaped steel bearing block provided for the bell crank A polishrod; grip bearing 18 is arranged: on the upper rear end oithis-jack beam,

frame denoted generallybythe numeral 4:: as i a the free ends of thearms thereofdisposed'lat- V erally to provide attaching feet 5 that are se cured 'onztlieforward end portionof tliebase l member 'Aisir'nilar'invertedtu shap'ed'steel gw IframeGissimila'rly secured on theiforward end 'portion of'the other basemember 2 and these 'U'-sha'ped frames are arranged in" alinement with each other'as cl'early indicated in the drawings. J a v Upon referring to Figural it Willbe observedthata substantially'inverted- Ui shaped bracket 7 issecured withinathe upper portion of each inverted U-shaped steel frame-so that-the crown portioniof the U=shapedz bracket 1 win be: spaced; belowlthe crown. portion: of the respective inverted? U sha'pe'd frame and arranged .for 'slidablef movement betweemthe bracket? and theto'pportion of each U sh ap'ed: frameTis-aLbarl'S: 'The ends: oft'hese blocksare spaced With respect totlie :arms'of the;franiesiand aidjnsting screvvs'9 extend through the-respective arms of each inverted: U-shapede': nam the: inner-ien'ds' of these screws beingi'insengagement with the.

respective: blocks 8" and an-ut'10' is thre'aded on 1 each: set-screw for holdingthe same in: its

properly adjusted positionyBy-mani-pulatingthe set screws =9 and the nuts- 10, the bearing blocks may beproperly adjusted WithinvS the upper: portion of the respective steel frame; The inner opposed facesof; the hearing 'blocks are formed. with suitabl'emsockets for receiving the-pintlesll that project from opposite'sides ofplate like uniti12 that has; 3

formed on the bot-tomthereof the block 13 as clearly indicated in=Figure5i The pinions 111 cooperate With the-sockets T5 torpe-rmit the pivotal movement of: the. unit '12 between; the upper: portions of the frames 4r-and 5..

, A jack beam denoted generally by" the numeral 151-incl11d'esa pair: of parallel spaced side plates 16 With spacing blo'cksl? arranged therebetween and .thef forw-ard ends of the side-plates 16 are fixedly securedto the oppositesides ofthe block l3c -Whereby'theforvvard end of the beam 15 is operatively connected-W-ith the vertically swinging unit 12.

Suitable braces 19 are provided for the steel frames 4 and 5, and these braces extend from the rear ends of the base strips to the upper rear side portions of the respective frames.

A pair of alined inverted U-shaped brack- ' cts 20 and 21 are secured on the upper faces of the intermediate portions of the base strips 1 and 2 respectively and arranged for longitudinal adjustment within each bracket is the block 22. Suitable adjustihgscrewsQi-l ex tend through the respective arms of each of the inverted U-shaped brackets for engage ment with the respective ends of the blocks 22 and nut 24 cooperates with each screw to hold the same in itsproperlyadjusted position.

The blocks that are operable within the respective" brackets are. interconnected with each other, the interconnectingiportion 2 5 has its-upper face cutout to-accommodate the rounded trunnions 26111913 project from the opposite sides of a plate like member 27 and on which plate like member is formed the upstanding blocks 28 as clearlyindicated in Figure 7. This construction provides "a: means whereby the unit 29. is rockably supported on the upper faceof the connectingiportion 25 for swinging movement between thespac'ed brackets 20 and-21 andattached to this unitis the horizontal portion of' a substantially bell crank lever denoted generallyby the numeral30. This bell crank lever consists of a horizontal and a Vertical arm. 'The horizontal arm includes the spaced side platesx31 that are disposed on opposite-sidesaof the block 28 of the unit 29 inwardlyof the forward ends of the side plates and these side'plates are secured in a rigid manner to the blocks 28 by the appropriate fastening means. An ad- As the operation of the pump jack is wellknown in the art, it is thought a detailed description of the same is believed unnecessary.

I claim as new and desire to secure by Letters Patent is A pump= jack comprising a supporting;

structure including a base and a pair of inverted U-shaped frames risin'g 'vertically from oneend of the base andin alinement with each other, bearing blocks 'slidably mounted in the upper portion of the re-- 'spective frames, means adjustably: securing thebearing blocks'in the frames, a rocker unit; rockably supported by the said bearing blocks and having a block like extension de'pendingbetween the bearing block, a jack "beam including spaced side plates fixedly attached. to opposite sides of the said block 7 like extension of the rocker unit, a bell crank lever mounted in said supporting structure, and a pitman connection between the said lever and thejack beam.

*In testimony whereofIaifix my signature. THOMAS M. TUTILE.

ditionalblock32 provides spacing means for 1 the rear end of the side plates ofthe horizontal arm of thebell crankl'ever.

The vertical arm of the bell crank lever also includes a pair of spaced side plates denoted by the reference character 33, and suitable spacing blocks 34 are interposed between the side plates 33. The lower extremities of the side plates of the vertical arm arefixedly secured to the forward extremities'of the side plates of the horizontal arm ofthe bell crank lever, while diagonally disposed braces 35 extend between the upper end of the vertical arm and the rearend of the horizontal arm of this bell crank lever.

A shackle rodbearing 36i s associated with the upper end of the vertical arm of the bell crank lever 30 as indicated in Figure 1.

'A pitman 37 extends between the rear end a of the jack beam 15 and the rear end of the horizontal arm ofjthe' bell crank 30, and the top bearing for the pitman is shown generally i at 38 while the lower bearing for the pitman is indicated at 39 in Figure 1.

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