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Патент USA US2111591

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March 22, 1938.
_ G. T. HUMPHREY
2,111,591
PUMPING DEVICE
Filed Feb. 17, 1936
2 Sheets-Sheet l
31 la: not;
G. T. HUMPHREY'
2,111,591
PUMPING DEVICE
Filed Feb. 17, less
2 Sheets—5heet 2
Patented Mar. 22, 1938
2,111,591 '
UNITED‘ s 'mrss FATENT iO-FFlyCE
2,111,591
’
PUMPING DEVICE .
‘George T, Humphrey, Dallas,‘ Tex,‘ assignor, to
.‘ Republic Supply Company, Houston,‘ Tex.
‘Application February 17, ‘1936,,Serial No. 64,239
gjsolaims. (01. 74-103)
_ ‘:ThlS invention: relates to new and useful im
provements in pumping devices.
'
'
, '
‘One object of‘. the invention is to provide an im
iprovedgpumping device which is so constructed as
5 itop-rovide a positive. vertical, or: straight line lift
.of the pump’ rods.
1
'
'
1‘
-An important ‘object of the invention is topro
‘ vide an improved device for pumping wells includ
‘ ing a pivoted walking beam which is arranged to
,10 aswing to. raise and lower the pump rods, with
.meansforvmovingithe pivot of said‘ beam in. a
‘horizontal plane simultaneously with the swing
ring of the beam, whereby the end of said beam
‘travels inavertical line during its swing.- ‘
v15
‘
Another object of the invention is to providean
‘improved pumping‘ device having a walking beam
lfulcrumed in a ‘bearing; which is movable in-1a
horizontal plane, andmeans for guiding and'con
trolling the movement of the bearing, whereby the
end of the beam is moved in an‘ absolutely vertical
.2
or straight line.~ V
_
A further‘object of the invention is to provide
an improved ‘pumping device wherein the walking
beam is full-floating which permits the beam‘to
25 be *moved‘laterally, during‘its swing, such lateral
movement-of the beam compensating the 1arcuate
by reference to‘the accompanying drawingspin
which an exampleof the invention is shown, and
wherein:
'
'
-
Figure 1 is a side elevation of a. pumping unit,
constructed in accordance with the. invention,
.5
Figure 2 is an enlarged viewvof one end of the
walking beam and ‘ its. mounting.
‘Figure 3 is a transverse, vertical sectional view,
taken on the. line 3-,-3 of Figure‘ 1, >
,‘Figure‘i is a longitudinal,‘sectional-view, taken ~10
through the pivot bearing of the beam,
,
Figure 5 is a transverse,.vertical, sectional. view,
taken on the line 5+5 of Figure 1,
Figure 6 is a partial side elevationof a modi?ed
'form of'the invention,
'
15
Figure ‘7* is a“ view, similar to Figure 2 ofstill
another form of the invention, and
v-‘Figure -8 is a‘ horizontal, cross-sectionahview,
“taken on the line 84-8101‘ Figure-"7.
, I In the drawings, the numeral l0. designates‘a A
I. baseion which a Samson ‘post, or other support I l
is mounted. " vThe post is shown as constructed of
four angular inclined ~ legs 12' connected and
‘braced‘vby suitable angular members l3. The
structural members of the post may be welded,
-
bolted, or otherwisesuitably secured together to
swing of the-beam-to-cause the end of the beam ' ‘form a rigid structure;
to travel in‘an, absolutely vertical line. ‘ > '
Still another object of the invention is-to pro
30 vide an improved pumping device including a
walking beam which is so mounted that it may be
readily removedfrom‘its support by merely dis
connecting the pump-rods and the actuatingpit
‘man? ‘therefrom, ‘without disassembling the bear
35 mg in which said beam is fulcrumed; the assem
' bling-‘of‘the unit being as‘readily and easily ac
complished.
_
‘
‘A further object of the invention is to provide
an’ improved mounting for a walking beam which
‘ 40 is‘ arranged so- that the beam‘ may be moved com
pletely out of the way of the pumping rods of the
‘well by merely disconnecting the rods and Without
disconnecting the actuating pitman at- the oppo
site end oi‘the beam.
45
‘
»
'
either side thereof. . A longitudinal walking beam
‘ I5 is located‘between the'upper‘end of the legs 12
of‘ the post and this beam. is supported on" the 40
horizontal-angle bars “I. It‘ is noted that the
space between‘the legs of the post wherein‘ the
beam is located isslightly larger than the width
of said beam (Figure 3).
Another object of the invention is to provide an
The beamis shown .as the usual Iebeamandis .45
improved walking beam mounting wherein the
provided with ,a bearing. l6 at its mid-portion.
This'bearing is fastened tothe underside‘ of, the
beam and a transversepin l'l extends through the
bearing, projecting at'each. end. ‘Flanged wheels
l8 ‘are fastened to the extended outer ends of‘ the 50
pin and these wheels engage the_,angle bars [4.
-..'I'hus,it‘willloe seen that the bars ‘I 4 form a track
and the ?anged wheels riding thereon permit the
:beam I51 to move horizontally the length of’ said
r-bars. ‘1.11; is, notedathahayclearancea I91 ,(Eigure x3) ,55
beam may be moved laterally a limited distance in
a horizontal plane, whereby the‘ end of the beam
may automatically adjust or align itself vertically
50 with thepump rods.
‘
A construction designed to carry out the inven
tion will be hereinafter described, together with
other features of the invention.
‘
It is noted, however/that
the construction of the post is subject to'variation
and the invention is not to be limited to any par
ticular type of post.
'30
Near the upper end of the post, aipair of parallel
angle bars or rails‘ l4 aresecured to the inner sides
‘of thelegs1l2. As is clearly shown in'Figures 2
and"3,. these angle. bars. are located in the same
horizontal plane and‘have their horizontal flanges _35
:14’ ‘directed inwardly. The length of thesev bars
is'such that their ends extend beyond the post on
The invention will be-more readily. understood
55 fromfareadingof the-‘followingspeci?cation and
2
2,111,591
is provided between the outer face of each wheel
and the vertical ?ange of each angle bar [4,
whereby the entire beam may be moved laterally
a limited distance between the bars M. It is
pointed out that when the wheels are resting on
the track, the top of the beam extends upwardly
beyond the upper end of the; legs l2 of the post.
It will be obvious that the beam cannot only
move in a horizontal path due to the wheels
10 riding on the track, but also the ends of the
beam may be swung in a vertical plane on the
pin l1, said pin serving as a fulcrum. One end
20 of the beam, which for the sake of clarity will
be referred to as to the outer end, is provided
15 with a hanger 2|, on which the upper end of the
pump rods 22 are pivoted. The lower ends of the
rods extend downwardly into the well, and as the
beam is swung, said rods are reciprocated ver
tically in the well. It is noted that when the
beam is in a horizontal position (full lines Fig
ures 1 and 2), the pivot point of the rods in the
hanger is in horizontal alignment with the ful
crum point of the beam, which is the pin IT.
For swinging the beam to reciprocate the rods
25
22, the opposite end 23 of the beam, hereinafter
referred to as the inner end, has the upper end
of an actuating pitman 24 pivoted thereto. The
lower end of the pitman is pivoted to the outer
end of a crank arm 25 which is connected with
30 and rotated by a motor 26, or other suitable
power source. As the crank rotates, the beam is
swung in a vertical plane on the pin ll, whereby
the pump rods 22 are reciprocated in the well.
Heretofore, it has been the general practice to
rigidly secure the pin or bearing, on'which the
beam is fulcrumed, to the Samson post I I. With
this fulcrum point of the beam’ ?xed, it is ob
vious that when the beam is swung, the outer end
26 of the beam which carries the rods 22, travels
in an arc. This arcuate travel of the end of the
beam causes bending of the pump rods, resulting
in breakage and other disadvantages.
As above explained, the fulcrum point of the
beam is not ?xed but is movable due to the
- wheels [8, which are carried by the pivot pin IT,
riding on the track formed by the angle bars l4.
Thus, as the beam is swung so that the outer
end of the beam moves upwardly in an arcuate
path, it will be obvious that a simultaneous move
ment or shifting of the fulcrum point of said
beam will compensate such arcuate movement
which will cause the end of the beam to travel
in an absolutely vertical path, which imparts a
vertical or straight line lift to the pump rods 22.
For limiting and guiding the movement or
shifting of the pivot pin I1, to shift the fulcrum
point of the beam as the same is swung, a pair
of arcuate guide cams or shoes 21 are provided.
These arcuate guide shoes are positioned, one on
60 each side of the beam, and each shoe is provided
with upper and lower ears 28 on its inner side
(Figure 2). The lower ear of each shoe is ar
ranged to be fastened by bolts 29, to the forward
or outer end of one of the angle bars M of the
A suitable brace bracket 30 may be weld
ed to the extreme lower end of each guide shoe
65 track.
and the bracket is adapted to be secured by bolts
3| to the underside of the angle bar M to further
fasten the guide in position.' The upper ear 28
of each shoe is arranged to be bolted by bolts 32
to the forward extended end of horizontal angle
bars 33 which are secured to, and brace the upper
end of the legs l2 of the post.
As is clearly shown in Figure 5, the arcuate
75 guide shoes 21 extend vertically, one on each side
of the beam IS. A bearing 34 is secured to the
underside of the beam and a transverse pin 35
is journaled therein. The outer ends of this pin
carry guide rollers 36 which are arranged to ride
on the arcuate surface of the guide shoes 21.
When the beam I5 is in a horizontal position, as
shown in full lines in Figures 1 and 2, the center
of the pin 35 is in horizontal alignment with the
center of the pin H, which is the fulcrum point
of the beam, and also with the center of the 10
pivot point of the upper end of the pump rods 22.
In operation, assuming the beam to be in a
horizontal position as shown in Figure 2, the
rollers 36 are located at substantialy mid-height
of the arcuate guide shoes 21. The hanger 2| on
the outer end of the beam is in vertical alignment
over the well hole and the wheels l8 and pivot pin
ll of the beam are at substantially the midportion
of the track. As the pitman 24 moves down
wardly due to the rotation of the crank 25, the 20
inner end 23 of the beam is pulled downwardly
causing the beam to swing on the pin I1. At the
same time that the pitman is exerting a down—
ward pull on the inner end of the beam, it will
also tend to move the beam and the pivot pin I‘!
carried thereby inwardly or toward the pitman.
This will assure the rollers 26 positively remain
ing in engagement with the arcuate guide
shoes 21.
As soon as the inner end of the pitman starts 30
to move downwardly, the outer end thereof begins
its upward swing. If the pivot pin ll were ?xed,
then this upward swing of this end of the beam
would be arcuate. But this pivot is free to travel
on the track, and therefore, as the upward swing . ,
of the outer end of the beam commences, the
guide rollers 36 carried by the beam l5, travel
upwardly on the face of the arcuate guide shoes
21. Due to the curve of said shoes, it will be
seen that as said rollers move upwardly along
the shoes, the beam l5, which carries the guide
rollers, is moved outwardly. Movement of the
beam will, of course, cause a movement of the
wheels l6 along the track to cause the pivot pin
H to be shifted horizontally, whereby the ful
crum point of the beam is shifted or moved in a
horizontal plane. The curvature of the arcuate
guide shoes 2'! is such that the fulcrum point of
the beam is shifted a proper distance so as to
maintain the travel of the outer end of the beam
in a vertical path. It is noted that the arcuate
shoes engaged by the rollers permit a gradual
shifting of the fulcrum. point of the beam, the
shifting occurring simultaneously with the swing
of the beam. Since the supporting wheels I8 55
travel along the horizontal track formed by the
angle bars M, the fulcrum point of the beam,
which is the pin I1, moves in an absolutely hori
zontal plane and irrespective of the position of the
ends of the beam, will never vary from its hori
zontal path.
60
On the downswing of the outer end of the beam,
the guide rollers 36 will travel downwardly on the
arcuate guide shoes 2'! and will shift the fulcrum
point exactly as described above, whereby at all
times, the outer end of the beam travels in an
absolutely vertical line to reciprocate the pump
rods in a straight line. Thus, it will be seen that
the fulcrum point of the beam is shifted in a
horizontal plane simultaneously with the swing 70
of the beam, thereby causing the outer end of the
beam to travel in a vertical path, instead of in an
arcuate path as is the case when the fulcrum
point of the beam is ?xed. It is pointed out that
due to the slight clearance I9 between the face 75
2,111,591
of the wheels l8 and the angle bars “I, the beam
3
yoke will cause a movement of the beam on the
may undergo a limited lateral movement so that
track, whereby the fulcrum point of the beam is
it will automatically align itself vertically with
shifted in a horizontal plane, thereby causing the
outer end of the beam which carries the pump
the pump rods 22.
.
The structure disclosed in the drawings not
only provides a straight line lift for the pump
rods 22 but also has other advantages. It is
obvious that by unhooking the pump rods 22 from
the hanger 2| and disconnecting the pitman 24,
rods to travel in a vertical line.
In all the forms shown, it is noted that the
shifting of the fulcrum point of the beam occurs
gradually; This gradual shifting also takes place
simultaneously with the swing of the beam, and
10 the entire beam l5 may be lifted upwardly from
due to the provision of the track, the pivot pin l'l
betweenithe legs l2 of the post and thereby re
moval of the beam may be readily accomplished.
The device may be reassembled with the same
case. Further, if it is not desired to remove the
15 beam entirely from the post but merely to move
the outer end 20 of the beam out of alignment
with the pump rods 22, it is only necessary to dis
moves in an absolute horizontal plane.
20
25
40
50
.
55
Said pin
remains in such plane regardless of the position
of the ends of the beam I5.
What I claim and desire to secure by Letters
Patent, is:
15
1. A pumping device including, a support, a
walking beam, a pivotal mounting carried by the
engage the pump rods from the hanger and re- ' beam and mounted’ to move transversely of its
move the rollers 36 and pin 35 (Figure 5) after axis in a ?xed horizontal plane in the support, an
which the beam may be moved rearwardly on the
arcuate guide shoe carried by the support, and a. 20
track so that the outer end of said beam is moved guide roller fastened to the beam and engaging
out of vertical alignment with the rods 22. It is the shoe, whereby when the beam is swung on
noted that it is not necessary to disconnect the its pivot the roller riding against the arcuate
pitman. 'If for any reason, the arcuate guide shoe will move the beam longitudinally to shift
shoes 2'! are to be removed, the unfastening of the pivotal mounting on said support.
25
2. A pumping device including, a support hav
the bolts 29, 3| and 32 will permit such removal.
In Figure 6, a modi?ed form of the invention is ing a horizontal track, a walking beam, a pivotal
mounting carried by the beam and including a
shown. In this form, instead of the single arcu
ate shoe 2'! on each side of the beam, a double roller supported on the track, an arcuate guide
arcuate guide shoe 3'! is provided. These double shoe carried by the support, and a guide roller
shoes are mounted on the angle bars l4 and 33
fastened to the beam and engaging the shoe,
exactly as is the single shoe. The guide rollers whereby when the beam is swung on its pivot the
36 engage between the shoes and thus any pos
roller riding against the arcuate shoe will move
sibility of the rollers disengaging the guide sur
the beam longitudinally to shift the pivotal
face of the shoes, is eliminated. The operation of mounting on said track with its axis in a ?xed
this form is exactly as the ?rst form.
horizontal plane.
.
In Figures 7 and 8, still another form of the
3. A pumping device including, a support hav
invention is shown. In this form, the arcuate ing a spaced pair of horizontal tracks, a walking
guide shoes’ 2'! and rollers 36 are omitted. In - beam having a transverse pivotal mounting on its
place of these shoes and rollers, a guide yoke 40 is underside at its midportion including an axle 40
provided. This yoke has one end pivotally mount; having rollers at its ends supported on said
ed in a bearing 4! fastened to the underside of tracks, said beam having provision at one end for
the end 23 of the beam l5. The other end of the the pivotal attachment of a pump rod- and at its
yoke is pivoted in bearings 42 secured on the opposite end for the application of operating
inner ends of the angle bars M. The pivot points power to rock the beam to lift the pump ‘rod, and
of the yoke and of the pin l‘! of the beam are means for moving the beam longitudinally to
in horizontal alignment when the beam is in a Wards the pump rod when it is rocked, said means
horizontal position, as shown by full lines in including curved shoes mounted on said support
Figure '7.
'
at the ends of said tracks, and rollers mounted
When the pitman 24 is actuated to swing the on ‘opposite sides of the beam and engaging said >
beam, it will be obvious that the yoke 40 which shoes, whereby the beam-supporting rollers travel
has one end pivotally attached to the beam will on said tracks and the pivotal axis of the beam is
also be swung. Since the opposite end of the yoke shifted in a straight line in a ?xed horizontal
is pivoted to a ?xed point, the end of the yoke plane and the pump rod moves in a fixed straight
which is fastened to the beamtravels in an arc vertical line.
61 Cl
(Figure ‘7),. The arcuate travel of the end of the
GEORGE T. HU'MPI-IREY.
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