US660059A - Oil-well jack. - Google Patents

Description

2 Sheets-$haet 2.

(No Windel.)

RICHARD 1V. HUDSON, OF TOLEDO, OHIO, ASSIGNOR OF ONE-THIRD TO THE KIRK MANUFACTURING COMPANY, OF SAME PLACE.

OlLwVt/ELL JACK.

SPECIFICATION forming part of Letters Patent No. 660,059` dated October 16, 1900. Application filed March 3, 1900I Serial No. 7,150. (No model.)

To ft2/Z whom it may concern,.- the jack. The frame 4 is formed in hinged Beit known that l, RICHARD W. HUDSON, sections 5, 6, and 7, respectively. Sections of Toledo, count-y of Lucas, and State of Ohio, 5 and 6 are hinged together by the pin 3,which have invented certain new and useful lrnpasses through transverse perforationsinthe 55 5 provements in OilVell Jacks; andldo hereends thereof. Section 6 is flattened at its by declare that the following is a full, clear, lower end, which portion is formed with equiand exact description of theinvention, which distant perforations 8 to receive a bolt 9 for will enable others skilled in the art to which pivotally connecting the surface rod 10 thereit appertains to make and use the same, refto and for the purpose of adjusting the length 6o ro erence being had to the accompanying drawof the pump-strole. Bolt 9 also secures the ings, and to the figures of reference marked lower end of section 7 to section (i. Section thereon, which form part of this specification. 7 is form ed at its upper end with a bifurcated My invention has reference to a pumpingcasting 1l, divided at 12 to permit the unobjack for pumping oil-wells, and has for its structed movement of the polish-rod 13. 65 I5 object to provide a jack of simple and inex- 14 is a bolt which passes through the cast pensive construction for reciprocating the ing 11 at 15 and also the perforation 16 in the polish rod and the pumprods suspended end of section 5 of the frame and serves to therefrom. couple the sections 5 and 7 together when the It has furtherforits object to provide means jack is in operation. The polish-rod 13 is 7o zo for suspending the polish-rod, whereby the suspended by means of a collar 17, having1 usual lateral strain upon the rod is avoided. the lower bearing points or surfaces 18 and I further provide a simple means for rethe lower inclined faces 19. The collar 17 is moving the working parts of the jack from secured to the polish-rod by a set-screw 20. v proximity to the polish-rod without the usual The bearing-points 18 fit into recesses 2O'Y on 75 necessity of disconnecting the surface rod. the upper side of the cradle 21, which is di- In carrying outthe foregoingand such other vided at 22 to permit the free movement of. objects as may hereinafter appear my inventhe polish-rod while the jack is in operation tion consists in the construction and the parts and also to permit the removal of the hanger and combination of parts hereinafter shown, from the rod. The lower side of cradle 21 is 8o 3o described, and claimed. arc-shaped, with the axis of the arc trans- In the drawings, Figure 1 is an elevation verse to the cradle coincident with the center of my jack, a portion of one of the standards of the bearing-surfaces 18. On the sides of which support the jack being cut away. Fig. the cradle are shouldered bolts 23 for pivot- 2 is a front elevation of the hanger for susally attaching the cradle 2l to straps 24, 85 pending the polislrrod. Fig. 3 is a detail in through the lower ends of which the bolts 23 perspective of the cradle which forms the pass.

lower portion of the hanger. Fig. 4 is a detail 25 represents shouldered bolts on the proin perspective of the collar which is secured to jecting ends of the casting 11 for pivotally atthe polish-rod and which when the jack is in taching thc upper ends of straps 211. 9o 4o operation rests upon the cradle shown in Fig. 26 is a pin passing through the rear end of '3. Fig. 5 is a sectional elevation showing the the cradle 2l and also a strap 27, which strap relation of the cradle and the collar shown in is hinged at its upper end to the casting 11 Figs. 3 and 4, respectively. Fig. 6 shows the by a pin 2S passing therethrough.

jack disconnected and removed from prox 29 is an ordinary collar secured to the pol- 95 imity tothe polish-rod when the well is to be ish-rod by means of a set-screw 30. By suspulled. pending the polish-rod on both sides of the Referring to the drawings, 1 designates the axial line there isan easy movement of the usual base or platform built around a well, rod and no tendency to the usual lateral to which are secured uprights or standards 2, strain. When it is desired to pull the well, roo

5o which have fulcrumed at their upper ends by the collar 29 is lowered until it rests upon means of a transverse pin 3 the frame 4 of the stuffing-box 31. As the polish-rod moves upward it is secured at the highest point of its movement by tightening the set-screw 30 in collar 29. The cradle 2l is then released from the polish-rod, bolt let is withdrawn, and section 5 thrown backward, section '7 being made to assume an elevated position,as shown in Fig. 6. Section 7 may be lashed in this position or secured by means of a hooked ineinber, as shown at 32. The jack when folded up will continue to ro'ck backward for-V Ward, but will in no Way interfere With those engaged in pulling the well.

therein without departing from the spirit of The employment of my improved jack effects an appreciable saving in the time required to pull a well. Where other pumping' rigs in present use are employed, the initial Operation in polliner e well is to deteeh the surface rod from the jack. This necessitates the employment of a power-brake, or the engine which. furnishes power for pumping ,a number of wells must be shut down.' The jack is then lifted after the surface rod. is detached and swung in its entirety npon its vsupe porting-frame to remove it from proximity t0 the polish-red- Tbis operation requires ofen.- siderable ti ine and labor.

From the description of myinventien it will loey seen that the necessity ef deteehing the surferoe rod is overcome, the Werking perfs of the jacket ere. easily removed proximity to the polish-rode@ there is e great saving of time end e, 'eonsidereble ref duetion in the cost- .Of pumping e Well. i

I have illustrated End, deseribed the, preferred details .of consti-notion; lout it is evi; dent that. Changes which. would .suggestthemselves to the ordinary meehenie eeh be made my invention: For instance, it is evident that the frame may be disconnected at any suitable point. I may desire to form a hinged jointintermediate of the length of either section 5, 6, or 7, in which case the frame would be folded together Without the necessity of removing the bolt 14.

What I claim, and desire to secure by Letters Patent, is- A 1n a pumping-jack the three-part frame suitably supported upon standards, the surface rod connected therewith, hinges formed at two angular points of the trame, and means for disconnecting the frame at a third point, a bifllrctted extension on the frame having an inwardly-extending recess,a cradle formed with En inwardly-extending recess, straps pivotelly ett'frohed. to the `forward sides of the cradle and to the forward sides of the bifureeitedy extension, e `strep pivotelly attached to the rear of the cradle and else to the rear of the bifnreeted extension, .E reciprocating Polish-rod edepted to oeeupy the recesses in the eredle and the bitume/ted. extension, e coller Qn, Said polish-rod havinglower bearing-points adapted] to tit into recesses in. the 'top of the eredle whereby the working nerfs of the .ieek ere, espeble of being removed from proXlmity te the. Apolishfrm. .substantially as End for the purpose set forthf,

lli tetlllQlly lll? I. Claim the foregoing as own l Efik mysigneture in presence of tyre WitnessesP RICHARD W. HUDSON.

Witnesses= CARL KELLER, SAMUEL RHOADES.

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