US257394A - Connection for polish and pump rods - Google Patents

Description

(No Model.)

E. P. SHETTER.

CONNECTION FOR POLISH AND PUMP RODS.

Patented May 2, 1.882.

' INVENTOR 2) 6 Skit WITNESSES I I n M W W ATTORNEY' N. PETERS, Phuwulho n her, Washington. D. C.

UNITED STATES.

PATENT OFFICE.

EeBnnT P. SHETTER, or BULLroN, PENNSYIJV ANIA.'

CONNECTION FOR'POLISH AND PUMP RODS.

SPECIFICATION forming part of Letters Patent No. 257,394, dated lvlay 2, 1882.

Application filed October 22,188]. (No model.) I

connecting and disconnecting the polish and sucker rods in oil-well pumps.

Heretofore it has been necessary, when disconnecting the parts of the oil-pump for any purpose whatever, to disconnect the adjuster from the walking-beam and connect the pol ish-rod to the suckerrod line, (alinethat passes over the top of the derrick to the bnll-wheels,) and the rod raised in the well, so as to free the adjuster from the beam. The standing pipe is then disconnected, the polish'rod separated from the sucker-rod, and the polish-rod, adjuster, and standingpipelowered to the ground, where they remain until again wanted.

The object of my invention is to provide means by which the polish and sucker rods may be separated without the necessity of disconnecting the adjuster and polisl1-rodfrom the walking-beam; and with these ends in view my invention consists in certain details in construction and combinations of parts, as will he more fully explained, and pointed out in the claims.

In the accompanying drawings, Figure l is a side view, showing the polish-rod disconnected from the sucker-rod by my improved means. Fig. 2 is a longitudinal sectional view of the lower end of the polish-rod and upper end of the sucker-rod, with their intermediate connections. Fig. 3 is a similar view, showing a slightly-modifiedform; and Fig. ishows another form of connection, partly in perspective and partly in vertical section.

A represents the walking-beam, having the adjuster B secured thereto, in which the polish-rod C is adjustably secured. This polish-rod is provided at its lower end with an enlarged head, D, havin gat'em ale screwthreaded socket, E, opening downward and adapted to receive and retain one end of the connectingscrew F. The enlarged head D of the polish-,

lower end of the standing pipe H is placed after the same has been disconnected from the tubing of the well. The connecting-screw F is provided at its upper end with a screwthreaded shank, I, on which is screwed the lock-nut J, which latter firmly holds the connecting-screw in proper vertical adjustment relative to the polish and sucker rods. The lower end of this connecting-screw is also pro vided with an enlarged head, K, similarto the one on the polish-rod, and is provided with a female screw-threaded cavity, L,'adaptedto receive and retain the upper 'screwthreaded end, M, of the sucker-rod'N.- 1 The connecting-screwF is provided centrally with a square portion, P, on which the wrench is placed when itis desired'to'connect or disconnect the polish-rod from'thesuckerrod, and is also provided on the shank po'rtiotr witliright or left hand screwthreads, while the head thereof is provided with'lel't'or right hand female screw-threads, as desired, so that by turning the connecting-screw in'o'ne direction it is secured to both the polish and sucker rods, and by turning in the opposite direction is disconnected from both. After the parts have been secured together the lock-nutJ is screwed up, which holds the parts securely in r rods. The walking-beam pitnian willlhen be removed from the counter-shaft crank, (not shown in the drawings.) and the polish-rod, standing pipe, and adjuster will remain attached to the beam and be raised with it,'so as to be out of the way while drawing the sucker-rod or tubing, as shown in Fig. 1.

IOO

By using my improvement a great saving of time is accomplished without increasingthe cost of the pump, while at the same time the several disconnected parts are maintained in their relative position out of harms way, where they remain until again wanted.

In the modification shown in Fig. 3, instead of having the connecting-screw removably seattached to the polish-rod that its removal therefrom is not necessary, and is consequently not liable to be mislaid or lost after removal from the rods.

If desired, the connecting-scrcw can be swiveledin the same manner to the suckerrod, instead of the polish-rod, and answer the same purpose. In the modification shown in Fig. 4 a supplemental connecting-piece, Q, is introduced. This piece Q, is provided with the screw-threaded shank a, which fits in the female screw-threaded cavity in the head of the polish-rod, two curved depending arms, I), anda base, 0, supported by the curved arms. This base 0 is provided with an oblong slot, commencing at one side thereof, between the arms, and extending nearly through the same. This slot 11 is adapted for the reception of the screw-threaded shank I of the connectingscrew I which is retained therein by the nut J, which latter is adapted to rest on the top of the base, and is so shaped on top as to conform to the internal curvature of the arms I),

and the nut J, adapted to bear on the under surface of the base. This construction of parts forms a swiveled joint, while at the same time the connecting-screw is removable from the remaining parts, and is also vertically adjustable at the swiveled joint. This construction also enables the polish-rod to be separated from the sucker-rod by simply unscrewing eitherthe nuts J or J and withdrawing the connecting-screw from the oblong slot.

My improved joint or connection is simple in construction, durable and efficient in operation, and by its use saves considerable time 1 in connecting and disconnectingthepolish and pump rods.

Instead of resting the standing pipe on the top of enlarged head of the polish rod after the, said pipe has been disconnected from the tub ing, any suitable device-such as lugs or "-wi thout departing fronithe spirit of my inve'ntion, and hence I would have it understood that I do not limit myself to the exact construction of parts shown' and described, but considermyself at liberty to make such changes as come within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a polish-rod provided with means for holding the standing pipe thereon after the same has been disconnected from the tubing, and a sucker-rod,-of an intermediate piece adapted to connect the lower end of thepolish-rod to the upper end of the sucker-rod and hold them securely in position, substantially as set forth.

2. The combination, with a polish-rod provided with means for holding the stand-pipe thereonafter it has been disconnected from the tubing, and a sucker-rod, of an intermediate connecting-piece adapted to be removably secured to. the lower end of the polish-rod and the upper end of the sucker-rod, substantially as set forth. A

3. The combination, with the polish-rod provided with an enlarged head having a female screw-threaded cavity therein and an annular cup-shaped shoulder on which the standing pipe rests after it has been disconnected from the tubing, and a sucker-rod provided at its upper end with screw-threads, of a connecting screw or piece provided with a screw-threaded shank adapted to fit in the cavity in the head of the polish-rod, and a head having a screwthreaded cavity in which the upper screwthreaded end of the sucker-rod fits, substantially as set forth. v

4. The combination, with a polish-rod provided with an enlarged head having a female screw threaded cavity therein, an annular shoulder on which the standing pipe rests after it has been disconnected from the tubing, and a sucker-rod provided at its upper end with screw-threads, of a connecting screw or piece provided with a screw-threaded shank adapted to fit in the cavity in the head of the polish-rod, and a head having a screw-threaded cavity in which the upper screw-threaded end of the sucker-rod fits, and a lock-nutsituated on the shank of the connecting screw or piece and adapted to lock it firmly to the polish-rod, substantially as set forth.

5. The combination, with the polish-rod U, shoulder G, head D, cavity E, and sucker-rod N, provided with a screw-threaded end, M, of

the connecting screw or piece F, provided with rzo shank I, head K, cavity L, \vrench-sqaare P, and the lock-11 ut J, all adapted to operate substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. u

EGBERT P. SHETTER. Witnesses:

S. L. SNYDER, J. A. LoNEY.

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