US1591109A

US1591109A - Pump jack

Info

Publication number: US1591109A
Application number: US78608A
Authority: US
Inventors: William E Wentworth
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-12-31
Filing date: 1925-12-31
Publication date: 1926-07-06
Anticipated expiration: 1943-07-06

Description

July 6 1926.

' W. E. WENTWORTH V PUMP JACK Filed Dec. 31, 1925 2 Sheets-Shut 1 July 6 ,1926.

W. E. WENTWORTH PUMP JACK Filed Dec. 31, 1925 2 Sheets-Sheet 2 V -1This invention relates to improvements I is tobe pulled.

Patented July 6, 19 26.

' WILLLIAMJE. WENrwo'n'rrr, orfsairi rmq of srs 1:5 1'

P M d ir '1 Application file'd December31,1925. Serial No. 7 8,608 I in pump jacks and has asone of its objects to provide a -pump jack which will simple and substantial in construction and will operate in a positive manner and not be liable to any disarrangement of its'partsI the being broken away to better illustrate the of pillow blo between the ends ofth'esills, and.

structure, V

Figure 2 is. a top" plan I viewgof jack."

Figure 3 is a horizontal sectional View taken substantially von the line 3 3 of Figthe arrows.

ure 1, looking in the direction indicated by Figure 4 is a vertical transverse sectional View taken-substantially on: the line 44: of Figure 1, looking in the directionindicated by the arrows. a

The jack embodying. the invention prises a base structure including a number spaced sills 2, spacing blocks being disposed 4 being secured through th'ejsaid'ends of the sills and through the spacing blocks to secure the sills together in parallelism. The pump casing is indicated by the numeral 5 and the pump rod byfthe 'numeral 6, the upper end ofthe pump casing beingreceived between the rear ends of the, Isills,,2.' Bearings 7 are mounted upon the sills '2 adjacent the pump casing, anda short shaft 8 is journaled. at its ends in these hearings and has loosely, mounteduponit a head 9 to which are secured the lower ends of spaced uprights 10 preferably of channel iron. Each of the uprights 10,.

l1, and a shaft 12 these bearin s and rotatably' supports a (sheave 13. X

-the' uprigh and in order'to prevent rearward tilting vof H 7 parts them the sheave cks 1, which support parallel .tion, ahead bolt rodsat its upper end, supportsa bearing, indicated by the numeral] isomounted at its ends in block 14 is disposedbetween the uprights l andsecured in place by blots 15,:and the block has imparted to the pump a projecting boss 16 which is .receivedibetweenithe side flanges 1 17 of an l -beam l8, the web of whlch beam.- at lllSJlPPeI-flfilld; is cut away to -accommodatethe said boss. .Thebea1nl8 constitutes a'bracefor the flanges, 17 of the formed with recesses 19 adapting the' beam' uprights 1 0 [and the side beam, a-tits lower end, are x at its said. end'to;straddlea cross rcdyQO mountedat itsend portionsinv the sills. 2 and tween 'said sills. lower end 'of. the I-b'eaim 18, with the rodQO serves, of course, to I ts '10 under ordinary con x in at its intermediate- 'portionzbe' V h ng gement e of {the 1 1 prevent forward tilting of; Y

dltions,

saiduifirights a U-shaped clip'2l is engaged with the rod 20 andfprovidediwith eyes 22 through which issecured .a'bolt passing- 3 also through the web of the I-beam lSu-rItf willbe evidentiat. this'point, that the brace .18 serves effectually to 'maintain the-uprights rigidlyin an upright position but that by removing the bolt 23 and "the Us" clip- 21, the lower end .of the brace 18..may

be disengaged from therrod and... the.

brace moved forwardly, permitting the up rights 10 toswingv in a corresponding direction about the shaft 8 asa centerand thus assume a lowered. position, carrying {with 13, and giving clearance at the time of pulling the well.

Bearings 24 are mounted upon the sills 2,'and a shaft 25 is mounted in the said bears tings and supports, at its intermediate. por

which is clamped this manner, ment in a forward and rearward I and a bolt 3 end of the direction 0 is secured through the upper.

-a cable which ispassed over thefsheave "13 and connected at. one

26 comprisingsections,between f by'bolts 27 the lower end 28 of a swinging'postj29. -Tl1is post is, ilnfv Q supported for swinging mov e' p K 7 post' land has connected to it the side members of'a U-clip or yoke'31. The numeral 32 indicates end, by a yoke33, to the upper end ofthe pump rod- 6, and the other end of this cable is connectedto one of a turnbuckle '34,

end

the turnbucklebei'ng providedat its other end with a hook 35 which is engaged with the yoke 31', connection being, in this'rn'anner', established between the swinging "post .29 and the pump rod 6,I so

up and down reciprocatory motion willibe rod 6 through the; medium of the cable 32. At'thispoint that when swingi g motlon is mparted to the said swlnglng post,

IlO

' ing its lower endtormed to straddle the said nod, means ,separab'ly connected with :the brace enacting with the rod to hold the 'eiiiciency. Y V 7 Having thus described the invention, what will be understood that instead of-the sheave l3 and cable '32, a sprocket and a chainmight be employed with advantage.

" The numeral '36 indicates the usual rod line which extends to the'source of power and which, in the present invention, is connected at its end to one end of a turnbuckle 37,

the other end of the turnbuckle being pro-' vided with a hook 38 engaged with a yoke 39 which straddles the swinging post 2 9 and is connected thereto by a bolt 4-0 which is interchangeably engageable through a series of openings 41 formed in a vertical line in the said post 129., it being understood that by varying the point of connection of the bolt with'the said swinging post, the extent of swinging movement of the post may varied so as to vary imparted to the pump rod 6..

The turnbuckles' 3'4: .and 137' serve as a means whereby the vertical position of the pump rod may be adjusted. I

From the foregoing .lescription lot the in vention, it will be seen that-there is provided an extremely-simple and yet very substantial pump jack construction which will operate in :a positive :tnanner and with great I claim is: V r V v I l. inapump "jack, a lease structure, an upright mounted thereon tor tilting movemen-t, fa hrace pivotally connected at its upper end with the upright a rod mounted upon the ,base structure, the said abrace havstructure in spaced relation the stroke right and having rotatably mounted upon the upright, an upright post mounted at itslower end upon the base structure for movement toward and from the first mentioned upright, a flexible connection connected "at one end to the post and trained over the wheel, means at the other end of the connection for attachment of the same to a pump rod, and means icon nected to the said :po'st ing movement thereto.

v2. In a pump jack, a base structure, upright mounted at its lower endtor angular movement, a :fixed element upon the base for imparting swingcormecte'd with the 'upits lower end", engaged with the said fixed element, means separably connected with said lower end of the brace and coacting with the fixed element to hold the brace oozmected With said ele ment wherebyhy disco necting the lower a brace .pivotally to the upright,

end of the brace from the fixed element, the

upright may be permitted to assume a low-' I 'ered position, a wheel rotatably mounted upon the upper end of the upright, an "upright post mounted atits lower end for swinging movement toward :andfr-om the upright, a flexible connection connected at one end to the post and trained overthe wheel, means at the other end of the connection for attachment of the same to a pump rod, and means connected to the post for imparting swinging movement thereto. In testimony whereofl aiiix my signature. WILLIAM E. ,[n St]