US554561A - Sylvania - Google Patents

Description

(No Model.)

0. WILDER & E. PATTRELL.

POLISH ROD ADJUSTER.

No. 554,561. Patented Feb. 11, 1896.

\A/lEEiEfES- UNITED STATES PATENT O FICE.

CORVIN YVILDER AND ERNEST PATTRELL, OF DERRICK CITY, PENN- SYLVANIA.

POLISH-ROD ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 554,561, dated February 11, 1896.

Application filed August 13, 1894:.

To 0: whom it may concern:

Be it known that we, CORWIN \VILDER and ERNEST PATTRELL, of Derrick City, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Polish-Rod Adjusters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, ref erence being had to the accompanying drawings, which form part of this specification.

0 ur invention relates to an improved polishrod attachment; and the object of the invention is to provide a novel device for automatically turning the polish-rod of an oil-pumping apparatus while the same is being reciprocated. This is for the purpose of preventing the accumulation of paraffine in the working barrel as well as on the sucker-rod, which if not dislodged or prevented from accumulating will greatly obstruct the valve, as well as materially diminish the flow of oil, and in many cases the accumulation is so great as to close the well, necessitating the pulling of the tubing as well as the rod and valves for the purpose of cleaning. The present invention is designed to obviate all this trouble by turning the rod automatically by the walkingbeam all the while the latter is in operation.

The invention consists in the novel features of construction hereinafter fully described and claimed and illustrated in the accompan ying drawings, in which Figures 1, 3, and 5 are side elevations of a walking-beam at different elevations having our improved attachment applied thereto. Figs. 2, 4E and 6 are enlarged plan views of portions of Figs. 1, 3 and 5, respectively, showing the relative positions of the ratchet and dog at the several elevations.

A designates the samson-post and B the walking-beam. The latter is forked on its outer end at O and notched upon its upper side to accommodate the cross-arm D of the adjuster E.

F is the polish-rod extended upward through the fork of the walking-beam and through the adjuster, and carrying at its upper end the stop G, which rests on the upper side of the adjuster.

Serial No. 520,187. (No model.)

juster, being held from downward movement therein by the stop G.

Attached at its inner end to the under side of the walking-beam is the spring-dog J havingthe quarter-turn K between its ends and the ratchet-engaging hook L at its free end. The outer end of the dog rests at all times upon the flange I, its free end being sprung down slightly, as shown.

As the polish-rod always travels in a verti cal line and the walking-beamor, at least, its outer endin the arc of a circle, it will be understood there will be a slight rocking movement of the rod upon the beam, this movement being accommodated by the crossarm D of the adjuster moving in the notches of the forked-beam end. The adjuster is held in proper position by the securing-board L, while the polish-rod is held from upward movement inthe adjuster during the downward stroke of the beam by the elongated sleeve M confined on the rod between the adj uster E and ratchet-wheel H.

As the beam ascends its movement is outward slightly or toward the rod and ratchet, causing the free end of the spring-dog to move forward over the ratchet-teeth to the position indicated in Fig. 4, the dog resting all the while on flange I. As the beam begins its downward stroke the beam recedes from the rod, drawing with it the dog, and the outer end of the latter being in engagement with one of the teeth draws around the ratchetwheel with the effect that the rod is given a partial turn, and this is repeated at every downstroke of the rod, the dog moving ahead for a new hold on the ratchet at every upstroke. During the upward movement of the rod it is held from a backward rotary movement by the frictional contact between stop G and the upper end of the adjuster E, the entire weight of the rod, valve, and oil being raised being at this point. We are therefore enabled to avoid the use of a locking-dog for the ratchet, and, further, are materially benefited by not using one, for if the valve is locked from rotary movement in the working barrel the rod is not held positively from relieving itself from the twisting imparted to it by the spring-dog, whereas if alocking-dog is used every partial turn is held positively, and under the adverse circumstances noted above the twisting will eventually sever it.

The quarter-turn K in the spring-dog J serves the double function of affording vertical and lateral elasticity, so that it will readily accommodate itself by means of its vertical elasticity to the varied planes of the beam with relation to the ratchet-wheel, while its lateral elasticity holds it in constant contact with the ratchet-teeth, though movable freely thereover. The dog is sprung down slightly, as before stated, so as to rest solidly at all times on flange I, from which it is never displaced.

We make no claim to the adjuster or to the means for securing it in position on the beam, as these are old and well known in the art; but

That we do claim as new, and desire to secure by Letters Patent, is-- 1. The combination of a walking-beam, a polish-rod adapted to swing thereon,a ratchetwheel carried by the rod, a flange on the wheel, and a spring-clog carried by the beam which rests on the said flange and engages the ratchet-teeth in the manner shown and described.

2. The combination of the beam, the ad juster, the polish-rod, a ratchet-wheel carried by the rod beneath the beam, a stop on the upper end of the rod, a sleeve between the adjuster and the ratchet-wheel, and a dog, substantially as shown and described.

3. The combination of a beam, an adjuster, a polislrrod, aratchet on the rod, a sleeve 011 the rod between the adjuster and ratchet for properly spacing them, means for holding the adjuster and ratchet-wheel from longitudinal displacement on the rod, and a dog carried by the beam for engaging said ratchet, substantially as shown and described.

4. The combination of a beam bifurcated at its outer end, the adjuster provided with. the laterally-extending arms for bearing upon the forks of the bifurcation, the polish-rod extended through the beam-bifurcation and adjustable in the adjuster, a ratchet-wheel on the rod, a sleeve arranged on the rod between the adjuster and ratchet-wheel against which the same bear for properly spacing them, means for holding the adjuster and ratchet from longitudinal displacement on the rod and a dog carried by the beam which engages the ratchet, substantially as shown and described.

In testimony whereof we affix our signatures in presence of two witnesses.

(JORXVIN XVILDER. ERNEST PATTRELL. itnesses BERTHA W. Bowls, 0. F. NEWTON.

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