US1470080A - Pumping jack - Google Patents

Description

Oct. 9 1923. 1,470,080

-' M. c. HOLE PUMPING JACK Filed Aug. 5, 1922 86 ice.

IEOR-RIS C. HOLE, OF MGKITTEICK, CALIFORNIA. ASSIG1\TOE 0F ONE-HALF TO :DEE 1B.

WILLCUTS, MGKITTRICK, CALIFORNIA. 1 i

PUMPING JACK.

Application filed August 3, 1922. Serial No. 579,530.

To all whom it may concern:

Be it known that Tlvlonins C. Hons, a citizen of the United States, residing at Mo- Kittrick, in the county of" Kern and State of California, have invented a new and useful Pumping Jack, of which the following is a specification.

This invention relates to pumping-jacks for well pumps and is particularlydirected to a type of pumping-jack especially adapted for use in connection with oil wells.

One of the best known types of pumpingjack which is universally referred to as the Oklahoma jack, comprises a substantially horizontally positioned top beam which is pivoted at its rear end to a supporting structure with its free or forward end connected to the polish or pump rod, a pivoted trian gular rock-frame having a vertical arm to which the power cable is attached to .rock said frame and a forwardlyextending arm, and a push rodbetween the forwardly extending arm of said frame and the free end of the top beam, whereby the horizontal pull of the power cable is converted to an arcuate movement of the free end of the top beam in a morcor less general vertical direction.

This arcuate movement, while of large radius, causes a very undesirable side thrust on the polishrod at every stroke with the result that the stufiing-box through which the rod reciprocates becomes so worn as to render it exceedingly difiicult to maintain vent a loss of oil.

absorbs an appreciable amount of the ap-.

said stuffing boX packed sufliciently to pre- Further such side thrust plied pumping power.

It is anobject of the present invention to provide a pumping-jack by which the horizontal pull or reciprocation of the power cableis converted into a true vertical movement and applied to the pump rod, whereby side thrust of the pump rod is eliminated.

Another object is to provide a pumpin jack structure which is exceedingly simple, durable and efficient, and which can be easily and quickly applied to the pump mecha nism, or removed therefrom to afford easy access to said mechanism.

A further objectisto provide a pumpingjack in which it is possible to incorporate,

certain standard parts of the well known Oklahoma jack.

Another object is to provide a pumpingrelatively spaced uprights 14.

. joined to the respectiveside rail,

jack having an overhanging or eccentric. connection with the pump rod and apply the actuating force in a direction which will operate to neutralize or counteract any. side thrust occasioned at the guide bearingsby the weight of the pump rod and column of. oil withinthe pump.- I

Various other objects and advantages will be more fully apparent from the following description ,of-the accompanying drawings, which form a part of this disclosure, and

which illustrate a preferred form of embodiment of the invention. Of the drawings:

Fig. 1 is a side elevation of my improved pumping-jack applied to the ordinary type. of oil well pumping mechanism.

Fig. 2 is a front elevation, and

Fig. 3 is a rear elevation. I

In the drawings, 1 designates the usual casing head, 2 the pump tubing, and 3; the polish or pump rod which reciprocates through the stufling-box 4.

Rearwardly of the. casing-head 2 are spaced sill blocks 5 to which are secured stationary pivot connections or bearing plates 6 to receive thetrunnions; 7' of a triangular rock-frame 8.. The rock-frame 8 has a vertical arm connecting with the terminal fit ting 9 of a power cable, and a forwardly extending horizontal rocking arm 10 which is provided with a pivot block 11. This frame as illustrated, is of the standard Oklahoma type, but in so far as the broad aspect of the invention is concerned, it may be of'other specific construction suitable for the purpose.

I provide a substantially vertically guided slide for imparting movement from the rocking frame to the pump rod; For this purpose pivotally connected at 12 to the sills 11, is a guide frame having lateral'side rails 13 extending-forwardly on opposite sides of the rock-frame 8 and joined respectively to Said uprights are joined together by vertically spaced bearing members 15 and to each upright isconnected a diagonal brace 16-.eX- tending rearward-1y and downwardly and thus forming a rigid frame structure. I

The bearing members 15 of the guide frame havevertically aligned bores to receive a vertical guide rod. 17 and said guide rod has at its lower end a'pivot member 18 end, of saidconnecting-rod being provided with a "pivot memberengagin'g the pivot block 11 of the rock-frame8. I I

Clamped upon the guide-rod 17 between the bearings 15 is a saddle member 21 having a bifurcated outer end avith the forks engaging beneath opposite trunnions of an adjuster 22 secured upon the polish or pump. rod3. v

A This provides anoverhanging connection between the 'guide rod 17 and pump rod 3, and tojovercome any tendency ofthe guide rod 17 exerting any appreciable side thrust on the upper bearing 15, on account of the eccentric "point of application of the'weight of the pump rod "and oil column, Ijposition the "toe of the rock-frame 8 slightly-rearwardly of the vertical axial plane of the guide rod 17. 1

Hence the actuating force from the rocking frame is imparted in, an inclined upward direction, and this direction for this force. operatesto develop re-action forces in the guide, blocks'or bearings 15 whichoppose the reaction, forces that would naturally be developed by the downward pull on the pump rod, s

y the above described structure, the horizontalfpull in of the power cable is converted into a true vertical rnovement in a plane parallel to the polish or pu,mp rod, whereby all side thrust on the pump rod is e1iminated I In disconnecting the "pumping-jack, the ip umprrod' is elevated todisengage the adjuster 22 from the saddle member 21, the i'pivot'al member 18 being disengaged from the, 'piv, ot seat 19, and the guide frame swung backward independently of the rockfra'm e, which may also be subsequently swung backward if desired.

With such' an organization of parts the jack may be easilyand quickly disconnected without the necessity of disturbing anyv element thereof. such as bolts, screws, or, clamps, .and may in the same manner be reconnected when desired. p 7

It is advisable, in order to counteract the pull in the pump head, that the point of application of the thrustiin the connecting rod should-be atia pointoutside of the. space be "tween the guide blocl rs. Itlis more cpnvenient to have this' point of application at the lower end of the slide; that is to say,'below the lowerguide block. v

A ack of thischar acter eliminates all of the objection'al features of the ,Oklahoma ,iack and=does away with the cumbersome and expensive'top beam and heavy supporting structure..thereof, and further it ,pro ,videsapurnpingqack which embodies great strength. freedom of vibration. simplicity of construction, and ease of manipulation.

slide substantially vertically in said structure, a connecting rod having a pivotal connection with said rock frame and with the lower end of the guide rod, and means carried by said guide rod and adapted to engage a pump rod. I 1

2. In a pumping-jack,a pump operating rock-frame, an independent guide structure pivoted to swing from position of use independently of the rock-frame, a guide. rod

mounted to slide substantially vertically in-l.

said structure, a connecting rod liavinga pivotal connection with said rock .frame and with the guide rod, and meansclamped on said rod and adapted toengage a pump 'rod.

3. In a pumping-Jack for operating. aWell pump, a pump operating roc-kframe pivoted at its rear end with its forward end terminating at a point located rearwardly of the pump rod, an independent-guide structure,

a guide rod mounted to slide in saids trum ture in a substantially vertical plane: between the pump rod and the forward end .of the rock-frame, a connecting rod pivotally engaging the forward end of the rock-frame and the lower end of the guide rod, and

means connecting theguide rod andpump rod. 7 x

4. Ina pumping-jack for operatinga well pump, a stationary pivot connection, a pump operating rock-frame pivotally engaging said connection, a guide frame hinged; to

swing from its position of 51188, a guide rod mounted to slide substantially verticallyin said guide frame, a connecting rodpivotally connecting the rockframe and the guide rod, and means connecting the guide rod and pump rod for actuating the latter.

5. In a pumping-jack for operating a well pump, a stationary pivot connectionfa pump operating rock-frame pivotally engaging said connection, a guideframe hinged to swing from its'positio'nof use and'having vertically spaced. bearings, a guide rod mounted to slide substantially vertically in said bearings, a connectingrod pivotally engaging the rock-frame and the lower end of the guide rod, and means clamped to the guide rod between said bearings and adapted to engage the pump rod.

6. In a pumping ack, a guide framehav= ing guide blocks, a slide guided to slide substa'ntially vertically through said guide tion forces are developed at said blocks acting upon the slide, arocking frame, anda member between the rocking; frame and slide and imparting the actuatingsforce to tween the guide blocks in an upward and inclined direction and operating to develop reactive forces in the guide blocks opposed to thefirst named reactiveiorces.) c

7. In a pumping-jack for operating. a well pump, the combination of a guide" frame having guide blocks,a slide guided to slide substantially vertically through said guide blocks, said slide having means on one side for engaging the pump rod whereby reaction forces are developed by the pull of the pump rod at said blocks acting upon-the slide, a connecting rod engaging the slide on the opposite side from the pump rod, a rocking-frame having a rocker arm with its rocking end disposed near the; slide having a connection with the lower end of the connecting rod and operating to move the lower 19th day of July, 1922; p 7 ORRIS no. HOLE.

are about in alignment with the line ofmovement of the slide whereby the upward thrust ofthe rodexerted upon the slide counteractsthe reaction forces developed in' thesame bythe force exerted by the pump. wordy v c the slide at apoint ou'tsideofthe space be- 8. In a pumping-jack, the combination Of a guide frame,v a slide'guided to slide subend ofthe connecting rodup and down an I blocks, said slide having means on'oneside for engaging the pump rod, whereby reacj stantially vertically in the guide frame'gsaid v SlldQhELVIIlg meanson one side for engaging the pump rod, a rocking arm mountedwith its rocking end disposed about in alignment with the line ofmovement ot the slide, a connecting rod between the rocking end'of the rocker arm andthe lower end of the slide and having a pivot-and-seat connection respectively [with the slide and with the rockerarm, the end of said rocker arm operating to move up and down in an arc and exerting anupwardthrust in the connecting I rod in each upwardmovement of the arm.

Signed at McKittrick, California, this

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