US1415037A

US1415037A - Pump jack

Info

Publication number: US1415037A
Application number: US404230A
Authority: US
Inventors: William G Jensen
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-08-17
Filing date: 1920-08-17
Publication date: 1922-05-09
Anticipated expiration: 1939-05-09

Description

w. G.}JENSEN.

PUMP JACK. 7 APPLICATION FILED AUG-17,1920.

Patented May 9, 1922 ATTORNEYS entree STATES arana. creme PUMP JACK.

inmost.

, Specification of Letters Patent.

Application filed August 17, 1920. Serial No. 404,230. t

T 0 all whom it may concern Be it known that 1, WILLIAM GUY J ENSEN, a citizen of the United States, and a resident of Bartlesville, in the county-of Washington and State of Oklahoma, have invented certain new and useful Improvements in Pump Jacks, of which the following is, a specification.

The present invention relates to pump jacks. I

The object of the invention is to provide a pump jack which is of simple anddurable construction, reliable in operation and easy to manufacture and install, which is adapted to the requirements ofvarious characters of wells and which impartsa pure rectilinear motion to the polish rod of the pump so as to operate the rod with the minimum wear on the same and on its stufiing boxes and associated structure. 7

Other objects and advantages of the in-- vention reside in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and particularly pointed out in the appended claim, reference being bad to the accompanying" drawings forming part of this specification, and in-which,'-

Figure 1 is a side elevation al View of the pump jack, in full lines showing the parts as seen in one position and in dotted lines showing the parts of the same in another position; and

Figure 2 is a detail view of the pivotal connection of the pivoted. standard.

Referring to the drawings, itwill be seen the invention contemplates a pump jack" adapted to be associated with a pump P of any conventional character which has as usual a stuffing box S and a polish rod R. The pump jack as usual imparts a reciprocating movement to the polish rod.

The pump jack includes a suitable base or foundation 10. A transverse sill 11 is suitably secured to the base 10 and carries a stationary frame 12. The stationary frame 12 is provided with anextension in the form of an inclined member 13 secured, as at 14, to the main frame and adjustably secured, as at 15, to a sill 16 arranged upon the base.

A standard 17 is pivotally mounted, as at 18, at its lower end upon the sill 16, so as to befree to partake of a limiteddegree of swinging motion about the pivot 18. *An arm 19 is pivoted at one end, as at 20, to the upper end of the standard 17 and is adapted 19. rocking frame 25"of triangular form fulto be connected at its otherend, as designated at '21, to the polish rod R. A. link 22 1s plvotally mounted, as at 23, to the outer end of the extension 13 of the stationary frame so that the link is constrained to mot10n about. a fixed pivot. The outer end of the link is pivoted, as at 24, to the arm 19 lntermediate the connection 21 of the arm to the polish rod and the pivotal connection 20 of the arm to the upper end of the pivoted standard but nearer to the connection 20.

Means is provided for, actuating the arm This means preferably consists of a crumed on the main frame, as at 26. A pull rod 27. is provided for rocking the frame 25. A connecting rod '28 has its lower end- I plvotally secured to the rocking frame 25,.

as at 29, and has its upper end suitably engaged with the arm 19, as at 30, sothat motion from the rocking frame is imparted to the arm 19. g

In operation as the pull rod 27 is reciprocated it rocks the frame 25 about its pivot 26. The rocking frame 25 through the connecting rod 28 imparts motion to the arm 19. On the upward movement of the connecting rod 28 the arm 19 moves upwardly and about its pivot 20. The end of the arm at the connection 21 thereof to the polish rod however partakes of pure rectilinear.

shown in initial position in full lines and at the end of the upward stroke in dotted lines. As shown in dotted lines the link 22 has partaken of its motion about its fixed pivot in a direction opposite to that of the arm 19 and has displaced the pivoted standard 17 sufiiciently to compensate for the pivotal motion of the arm 19 and permit the outer end thereof to reciprocate rectilinearly. This arrangement permits the use of available and inexpensive instrumentalities ,ily understood from an inspection of Figure 1 of the drawings in which the parts are a f Patented May 9,1922.

to impart the correct character and degree of motion to the polish rod so that the life of the polish rod, stufiing boxes and associated elements is much longer and their efiiciency is reatly increased. aving thus descrlbed my invention, I claim: A

A pump jack comprising a base, a stationary frame arranged upon said base and having an extension, a standard pivoted at its lower end to said base, an arm pivotally secured at one end to the upper end of said standard and adapted to be connected at its other endvvith the polish rod of the pump, a

link having one end pivotally secured to the frame extension and the other end pivotally ing rod transmitting motion from the rocking frame directly and immediately to the arm. 1 v v v WILLIAM G. JENSEN.