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Sept. 24, 1946.
2,408,013
w. H. wlNr-:MAN '
PUMPING APPARATUS
Filed Oct. 22, 4 1945
2' Sheets-sheet 1
24
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Sept. 24, 1946.
w. H. WINEMAN
PUMVPING‘ APPARATUS
Filed oct. `22 , 1943
6
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2,408,013
2 Sheets-Sheet 2
Patented Sept. Z4, 1946
2,408,013
UNITED STATES PATENT orrlcle:?
2,408,013
PUMPING APPARATUS
Wade H. Wineman, Michigan City, Ind., assignor
to Joy Manufacturing Company, a corporation
of Pennsylvania.
Application October 22, 1943, Serial No. 507,265
17 Claims. (Cl. Z55-_16)
1
My invention relates to pumping apparatus,
and more particularly to apparatus for yielding
ly supporting the beam of so-called “beam” well
pumping equipment.
Many of the wells containing oil which ceases
to flow naturally are produced by some form of
“beam” well pumping equipment. The usual
pumping equipment of this type includes a rigid
post, and a walking beam pivotally connected be
tween its ends to the upper end of the post. One
end of the walking beam is connected through a
rod line to a pump at the bottom of the well, and
2
beam. Yet another object of my invention is to
provide, in a supporting structure having a sup
porting element subjected to pressure fluid, im
proved means for regulating the pressure of the
pressure iiuid. Still a further object of my in
vention is to provide an improved means for
maintaining the pressure `in a ñuid cushioned
Walking beam system. Other objects and advan
tages of my invention will hereinafter more fully
appear.
`
`
In the accompanying drawings there is shown
the other end of the beam is connected to a suit
for purposes of illustration one form which my
invention may assume in practice.
able driving unit. With such pumping equip
ment, where the wells are very deep, the rod
line is subject to frequent breakage due to the
Fig. 1 is a side elevational View of a pumping
system in which an illustrative form of my in
variations in stressl and the comparatively high
stresses to which the rod line is subjected.
By providing a suitable yielding supporting
In these drawings:
vention is incorporated.
I
Fig. 2 is an enlarged vertical sectional view,
partially in elevation, through the beam-support
structure for the walking beam, the maximum 20 ing structure shown in Fig. 1.
loads and the stress ranges on the rod line may
be substantially reduced. Such supporting struc
ture may desirably include cylinder and piston
Fig. 3 is a vertical sectional View similar to Fig.
2 but showing the parts in dilïerent relative posi
tions.
.
elements, one of the elements being supported in
In the illustrative form of the invention shown,
a stationary position and the other being con 25 a "beam” type pumping apparatus, generally des
nected to the walking beam and adapted to re
ignated I, is connected to a polished rod 2 ex
ciprocate relative to the first. Contained within
tending through a casing head 3 of a well and
the space between the cylinder and piston ele- »
connecting to a sucker rod line (not shown).
ments at one end of the cylinder is a gaseous
The pumping apparatus includes a supporting ‘
fluid under pressure for urging the elements in 30 structure, generally designated 4, a walking beam
extended relation so as to provide _a yielding sup
5, and a driving unit 6 of conventional form con
port for the walking beam. In the supporting
nected by a pitman 'I with the walking beam and
driven in any suitable manner.
structure illustrated herein the cylinder is
Referring now more particularly to the sup
mounted in a stationary upright position, and
the piston is reciprocable in the cylinder and has 35 porting structure 4 for the walking beam, it will
be noted that an upright cylinder 9 rests upon a
a piston rod connected to the walking beam.
lower cylinder head I0 and has a bore II con
This structure is similar to that shown and de
taining a reciprocable hollow piston I 2. Extend
scribed in my copending application, Serial No.
ing upwardly from the piston through a packing
357,155 now Patent No. 2,377,913 dated June 12,
1945. The structure may, however, have the pis 40 I4 in an upper cylinder head4 I5 is a tube-like
ton supported in a stationary position, and have
piston rod I6 which is closed at its upper end by
the cylinder reciprocable relative to the piston
a wall I‘I. Threaded onto the upper end of the
piston rod is a coupling I8 which receives the
and connected to the walkingr beam. In order to
threaded end of a. cylindrical shaped member 20
maintain the desired pressure between the cylin
der and piston elements for supporting the walk 45 guided for vertical movement by a sleeve-like
member 22 attached to the upper ends of sup
ing beam and its loads, improved means are pro
porting legs 23. Fixed to the top of the mem
vided for pumping fluid into the cylinder space
ber 20, as by bolts 24, is a cap 25 to which the
to make up for fluid escaping around the piston.
walking beam is pivotally connected at 26. A
It is an object of my invention to provide an
improved supporting structure for a walking 50 tank 21 containing a gaseous iiuid, in this case
air, under pressure is connected by a pipe 28 to
beam. Another object of my invention is to pro
a passage 29 in the lower cylinder head II), and
vide an improved pumping system. Still another
the passage 29 opens into a pipe 30 threaded into
object of my invention is to provide improved
an opening in the lower cylinder head and ex
means for regulating the yielding resistancev of a
tending upwardly into the piston rod. Y
I
yieldable supporting structure for a walking
,eficacia
3
4
The diameter of the pipe 30 is such as to pro
vide between its outer surface and the inner sur
face of the piston rod iii, -an annular space 3l
an upward direction. To obtain the full value
of alleviation this pressure should be such that,
through which gaseous iiuid, conducted from the
tank through pipe 28, passage 23 and pipe 3S, may
to its topmost position in the bore I I at the same
time the polished rod 2 reaches the end of its
upward stroke. In order that the desired pres
sure may be maintained, a pump mechanism, gen
pass into the hollow piston i2. In order to seal
the gaseous fluid within the tank 21 and its con
nected passages, and to lubricate the walls of the
cylinder bore, there is placed within the lower
portion of the cylinder bore a body of oil of such
volume that the space within the piston is not ‘
quite filled when the piston rests upon the lower
cylinder head. As the piston moves upwardly in
during pumping operation, the piston l2 is raised
erally designated d6, is provided for pumping oil
which escapes from the lower portion of the cyl
inder bore between the walls of the piston and
the cylinder, back into the cylinder bore beneath
.the piston, and for pumping air into the spaces
communicating with the tank 2l so as to make up
for air escaping past the piston. The pump
it then occupies space that had previously been
mechanism‘is made adjustable, as later described,
to deliver fluid to the lower end of the cylinder
occupied by the walls of the piston, but the length
bore Yand its connected spaces at various rates.
of the bore and the dimensions ,of the piston are
The pressure in the system may be regulated
such that even when the piston engages the.up-.
either by adjusting the pump mechanism to de
per cylinder head the lower end of the piston ex#
tends below the surface of the oil a substantial 20 liver fluid at a rate exceeding that at which fluid
escapes from beneath the piston I2 and provid
distance and the vseal is maintained. In order
ing for the tank 2l' an adjustable relief valve '4l
to determine if there is a proper amount of »oil
which opens when the desired maximum pressure
in the cylinder, a sight glass 3i is connected in
is exceeded, or by adjusting the pump mechanism
communication with the bottom of the cylinder
so that iiuid is delivered to the system at the
and with a vpoint where the pressure conditions
same rate thatit escapes from beneath the piston.
are the same as they are at the upper surface of
The pump- mechanismv 45, as shown herein,
the oil, the poi-nt of connection herein being with
comprises a cylinder block ¿i8 connected in any
the passage V‘29 through a passage 33 in the cyl
suitable manner to the piston rod lHi Vat a point
inder head Iii.
s
~
l
the cylinder bore the level of the oil drops, since ' '
Means are provided for cushioning the piston
clearing the cylinder head «I5 when the piston is
l2 as it moves toward the lower cylinder head,
at the lower end of the cylinder-bore.
and this means comprises ari-upwardly projecting
portion 3K5 formed on the lower `cylinder head
and having a sloping surface 35 which forms an
in the block ¿i8 is a bore 49 having its >axis lying
in a vertical plane and opening through the lower
end of the block. Reciprocably mounted inthe
Formed
annular space, between the projecting portion and
bore ¿i8 is a piston 50 pivotally connected to a
the cylinder wall, having radial dimensions which
link 5l which is, in turn, pivotally connected to
gradually decrease toward the lower end of the
cylinder. A flange 35 formed around the lower
the walking beam 5 vat one or another of the
end of the piston is received Vin the annular space
point 2t. An intake port 55 opens into the upper
end of the bore 49 and is connected, un-der ycontrol
of an inlet'valve 56, with a Vconduit Y5l which
communicates with va passage 58 opening through
the upper Asurface of thepiston l2. A discharge
port (i0 connects the upper end o'f the bore 49,
under control of a discharge valve 6|, with a
conduitfë'Z opening into the interior of the tubular
piston rod i6. The inlet and -discharge valves
are urged toward their closed positions, Vrespec-v
and partially entraps oil to’cushion the piston as
it moves toward the llower cylinder head.`
Breathing means is provided for the upper end
of the cylinder bore, and this breathing means ir
cludes a connection 3l communicating with the
` bore at a point spaced from the upper end of the
cylinder, and communicating past a stop valve
>3S with a‘reservoir 39 at the lower end of the
latter. ‘The upper end of the cylinder bore is con
points 53 »spaced varying distances >from the pivot
nectedin'communication with the lower portion
tively, by springs 53 and 54. An adjustable abut
of the reservoir by a conduit 40 havingA a check
valve di, the check valve permitting a flow of
ment 55 is provided for regulating the tension
of the spring l63, and a stationary abutment 66
is provided for the spring 623.
The mode of operation of the apparatus de
scribed is as follows: Air is supplied to the tank
iiuid toward the cylinder bore and preventing Fluid
flow in the opposite direction. The‘upper portion
of the reservoir is connected to atmosphere
through an air cleaning venting means d3, and »
arranged between the upper end and lower end
of the reservoir is a baille plate 44 for effecting a
2ï from any suitable source (not shown) until
the pressure built up within'it and its connected
spaces if suñicient to raise the piston l2 to its
separation of oil from the air discharged toward
uppermost position in thedcylinder bore Il at
the venting vmeansl During operatic-n of the
the same instant the rod `2 reaches the upper
pumping mechanism, the valve 38 is left open so (il) end of its stroke during pumping. To maintain
that fluid may pass freely through the connection
this pressure during Vpumping the relief valve 41
37 between the reservoir Vand the cylinder bore.
may be adjusted to open when the pressure ,ex
As the piston l2 moves Aupwardly in the cylinder
ceeds this value, or the pump mechanismlêû may
bore and passeslthe connection 3l, the escape of
be adjusted by varying 'the closing pressure on
fluid to the reservoir is cut ofi, and a cushioning
the inlet valve and varying the stroke of the
pressure is built up in the upper portion of the
piston 50 through the connections 5i and 53, to
cylinder bore. When the piston moves from the
deliver iiui‘d to the lower end of p-iston I2 at"
upper toward the lower end of the bore,'the check
the same rate Ythat it escapes around the piston.
valve 4i opens to prevent the creation of a vac
As the walking beam is driven by the power unit
uum at the upper end of the bore.
6 to reciprocate the rod 2, the piston l2 moves
t will be noted that the pressure in the tank
to various positions in bore Il depending on the
2l and its connected spaces acts between the up
loads to which it is subjected. The pressure act
per surface o'f the body of oil in the cylinder 9 and
ing on the upper surface of the oil causes the
the lower surfaces of the upperend wall of the
latter to be forced gradually between the piston
piston and the wall Vl, and urges the piston in 75 and the cylinder lwalls to the space in the bore
5
2,408,6lä
ÍÍ above the upperend of the piston. If the
pumping apparatusis shut down for some time
and a p-ressure is held in the tank 2l, the oil
will eventually all be forced to the space above
the piston I2. The escape of air around the pis
ton and from the system may be prevented by
closing the valve 33. On actuation of the walk
ing beam the piston >l2 `moves upwardly as the
load decreases and, during normal operation,
overruns the point where connection 3'! opens
into the cylinder bore. As the piston moves up
wardly past the connection 3l, fluid is compressed
in the upper portion of the bore Il and is forced
through the passage 58, the conduit 5l, and past
the inlet valve 56 to the bore 49.
As shown in
the lower end of said cylinder, said pump mecha
nism including relatively reciprocable cylinder,
and piston elements, ‘means including‘an inlet
valve for connecting said cylinder element in
communication with the upper portion of said cyl
inder, means including a discharge valve .for con
necting said cylinder element in communication
with the lower portion of >said cylinder, and
means for effecting relative reciprocation of said
cylinder and piston elements in such a manner
that the working space in said cylinder element
approaches a maximum at the time fluid is com
pressed in the upper portion of said cylinder.
2. A yieldable supporting structure adapted for
association with a well pumping apparatus of
Fig. 2, the walking beam is swinging in a counter
therkind embodying a walking beam, comprising,
clockwise direction to raise the pump rod 2. The
in combination, means adapted to yieldingly 'sup
piston 5i) is still being moved downwardly in the
port the walking beam and including a cylinder>
bore 49 by the walking beam, and the load on
containing a reciprocatory piston, means for sup
the beam has not yet reduced to a point where 20 plying to the lower end of said cylinder a pres
the piston I2 is raised by the pressure beneath
sure fluid at a relatively high pressure; a vent
it. When the operating conditions are idea-l the
opening into said cylinder at a point spaced from
piston 50 is at its lowermost position in the bore
its upper end for connecting said cylinder to at
¿i9 when the piston I2 reaches its uppermost po
mosphere, said piston moving upwardly on re
sition in the bore l l. As the walking beam swings
duction of the’load on the walking beam, cover
about the pivot 26 to lower the rod 2, the piston
ing said vent and compressing iiuid within the
59 is moved upwardly in the bore 49 and forces
upper portion of said cylinder, and a pump mech
the fluid delivered to the bore under pressure,
anism for delivering fluid from the upper to the
past the discharge valve 6I and through the con
lower end of said cylinder, said pump mechanism
l'duit 62 to the interior of the piston rod i6. Fig. 30 including relatively reciprocable cylinder and pis
3 shows the positions of the parts when the walk
ton elements, inlet and discharge valve means,
ing beam is swinging in a clockwise direction to
means including a passage opening through the
lower the pump rod. As soon as the beam reaches
upper end of said piston for connecting said cyl
the end of its swing in a clockwise direction and
starts to swing in the opposite direction, the load
on the beam will have increased to such an eX
tent thait the piston I2 will be forced to its lower
most position in the bore I l.
As a result of my invention there is provided an
inder element in communication with the upper
portion of said cylinder past said inlet valve
means, passage means for connecting said cylin
der element in communication with the lower
portion of said cylinder past said discharge valve
means, and means for effecting relative recipro
improved pumping apparatus. It will be noted 40 cation of said cylinder and piston elements in
that the piston for the supporting structure oper
such a manner that the Working space :in said
ates to produce a pumping action which aids in
cylinder element approaches a maximum at the
delivering fluid to the system for maintaining the
time iiuid is compressed in the upper portion of
desired conditions, and which acts at the same
said cylinder.
l
time to cushion the piston. By arranging the 4 Ul 3. A yieldable supporting structure adapted for
make up pump in the manner described there is
obtained a two stage compression of fluid with
the addition of a minimum amount of equipment.
Other advantages will be clearly apparent to those
skilled in the art.
While there is in this application specifically
described one form which the invention may as
association with a well pumping apparatus of
the kind embodying a walking beam, comprising,
in combination, means adapted to yieldingly sup
port the walking beam and including a cylinder
O containing a reciprocatory piston, means forV sup
plying to the lower end of said cylinder a pres
sure fluid at a relatively high pressure, a vent
sume in practice, it will be understood that this
opening into said cylinder ata point spaced from
form of the same is shown for purposes of illus
its upper end‘for connecting said cylinder to `at
tration, and that the invention may be modiñed 55 mosphere, said piston moving upwardly on re-"
and embodied in various other forms without de
duction of the load on‘the walking beam, cover
parting from its spirit or the scope of the ap
ing said vent and compressing fluid within the
pended claims.
What I claim as new and desire to secure by
Letters Patent is:
1. A yieldable supporting structure adapted for
upper portion of said cylinder, and a pump mech
anism for delivering fluid from the upper to the
60 lower end of said cylinder, said pump mechanism
including relatively reciprocable cylinder and pis
association with a well pumping apparatus of
ton elements, means connecting said cylinder ele
the kind embodying a walking beam, comprising,
ment for movement with said piston, means con
in combination, means adapted to yieldingly sup
necting said piston element for actuation by the
port the walking beam and including a cylinder 65 walking beam, said piston element being so actu
containing a reciprocatory piston, means for sup
ated that the working space in said cylinder ele
plying to the lower end of said cylinder a pres
ment approaches a maximum when fluid is com
sure fluid at a relatively high pressure, a vent
pressed in the upper portion of said` cylinder,
opening into said cylinder at a point spaced from
and means including inlet and discharge valves
its upper end for connecting said cylinder to at zo for connecting said cylinder element in commu
mosphere, said piston moving upwardly on re
nication, respectively, with the upper and lowerV
duction of the lload on the walking beam, cover
ends of said cylinder.V
ing said vent and compressing fluid within the
4. A yieldable supporting structure adapted for
upper portion Vof said cylinder, and a pump mech
association with a well pumping apparatus of the`
anism for delivering ñuid from the upper to 75 kind embodying a walking beam, comprising, in
2,408,013
combination, lmeansadapted to yieldingly sup
port the walking beam and including alcylinder
` element incommunication, respectively, withthe
containing a reciprocatorypiston, means >for sup
said piston, means for effecting relative recipro
cation of said cylinder and piston elements in
plying to the lower end of said cylinder a pres
cylinder spaces >at vthe fupperand lower .ends of
sure fluid ata relatively high pressure, a vent tu such a manner that the working space in said
cylinder element approaches a maximum at the
opening into said cylinder at a point -spaced from
time fluid is compressed in the upper portion of
its upper end for connecting said cylinder to at
said cylinder, and means including arelief valve
mosphere, said piston moving upwardly on re
for regulating Yt’nepressure in the space beneath
duction of the load on the walking beam, covering
said piston.
Y '
`
said vent and compressing fluid within the upper
7. yA yieldableV supporting structure adapted
portion of said cylinder, and apump mechanism
for association with a well pumping apparatus
for delivering duid vfrom the upper to the lower
of the kind embodying a walking beam, compris
end of said cylinder, said pump mechanism in
cluding relativelyreciprocable cylinder and piston
ing, in combination,`means adapted to yieldingly
elements, means `connecting one of said cylinder 15 support the walking beam and including-a cylin
der containing a reciprocatory piston, an en
and piston elements for movement with said pis
closed Vtank containing air at a relatively high
ton, means connecting the other of said elements
pressure, means for connecting said tank in com
for actuation by said walking beam, said connect
munication with the lower `end of said cylinder,
ing means operating to eiîect relative reciproca
tion of said cylinder and piston elements in such 20 a vent opening into saidcylinder at a point spaced
from its upperend, said piston moving upwardly
a manner that the working space in said cylinder
on reduction of the load on the walking beam,
element approaches a maximum when fluid is
covering said vent and compressing air within
compressed in the upper portion vof said cylinder,
the upper .portion of said cylinder, pump mech
and means including inlet and discharge Yvalves
for connecting said >cylinder element in commu 25 anism for delivering air under pressure from the
upper to the lower end of said cylinder, said
nication, respectively, with the upper and lower
pump mechanism including a cylinder element
ends of said cylinder.
'
connected 'for reciprocation with said piston, a
5. A yieldable supporting structure adapted for
piston element received within `said cylinder ele
association with Va well pumping -apparatus of
the kind embodying a walking beam, comprising, 30 ment and connected for actuation by the Ywalking
beamJ said pistonelement being so actuated that
in combination, means adapted to yieldingly sup
the working space in said cylinder element ap
port the walking beam and including a cylinder
proaches a maximum’when lluíd is compressed
containing a reciprocatory piston, means for sup
in the upper portion of said cylinder, means in
plying to the lower end of said cylinder a pres
cluding inlet and discharge valves connecting said
sure fluid at a relatively high pressure, a vent
cylinder element in communication, respectively,
opening into said cylinder at a point spaced from
with the cylinder spaces at the upper and lowerV
its upper end for connecting said cylinder to at
ends of said piston, and means including a relief
mosphere, said piston moving upwardly on re
valve for regulating the pressure in the space.`
duction of the load on the walking beam, cover
I
ing said vent and compressing fluid within the 40 beneath said piston.
8. A yieldable supporting structure adapted for
upper portion of said cylinder, anda pump mech
association with a well pumping apparatus of the
anism for delivering fluid from' the upper to the
kind embodying a walkingbeam, comprising, .in
' lower end of said cylinder, said pump mechanism
combination, means adapted to yieldingly support
including relatively reciprocable cylinder and pis
the walking beam and including a cylinder con
ton elements, means connecting said cylinder ele
taining a reciprocatory hollow piston open at- its
ment for movement with said piston, means for
lower end, a liquid within the lower portion of
adjustably connecting said piston element to the
said cylinder for sealing the lower end of said
walking beam at points spaced from the point of
piston against the escape o'f fluid from within
support of the latter, said piston element being
so actuated that the working space in said cylin 50 the latter during normal operation of said pump
ing apparatus, a vent opening into said cylinder
der element approaches a maximum when iiuid
at a point spaced from its upper end, means for
is compressed in the upper portion of said cylin
supplying gaseous fiuid at a relatively high pres
der, and means including inletl and discharge
sure to the space within said hollow piston, said
valve means for connecting said cylinder element
in communication, respectively, with the upper 55 piston moving upwardly on reduction lof the load
and lower ends of said cylinder.
’
i
6. A yieldable supporting structure adapted for
on the ‘walking beam, covering said vent and
compressing duid within the upper portion of
said cylinder, and a pump mechanism -for deliv
association with a well pumping apparatus of the
ering iiuid'from the upper to the lower Yend vof
kind embodying a walking beam, comprising, in
combination, means adapted to yieldingly sup 60 said cylinder during operation of isaid pumping
apparatus, said pump mechanism including rela
port the walking beam and including a cylinder
tively _reciprocable cylinder and piston elements,
containing a reciprocatory piston, an :enclosed
means including inlet and discharge valves for
tank containing air at a relatively high pressure,
connectingV said cylinder element in communica
means for connecting said tank in communica
tion with the lower end of said cylinder, a vent 65 tionfrespectively, with the cylinder spaces Vat
the upper and lower ends oi said piston, and
opening into said'cylinder at a pointspaced from
mean-_s for effecting relative reciprocation of said
its upper end, said piston moving upwardly on
cylinder and piston elements in such‘amanner
reduction of the load on the walking beam, cov
that the working space in said cylinder element
ering said vent and compressing air within the
upper portion of said cylinder, pump mechanism 70 approaches a maximum at the time fluid is com
pressed in'the upper'portion of said cylinder.
for delivering air under pressure from the upper
¿9. A yieldable supporting structure adapted for
Vto the lower end of said cylinder, .said pump
association with .a well pumping apparatusof. the
mechanism including relatively reciprocable cyl
kind Vembodying a -walkingrbeam, comprising, in.
inder and piston elements, Vmeans including inletY
andV discharge valves connecting said Ycylinder 75 combination, means adapted to yieldingly sup
2,408,013
9
10
port the walking beam and including a cylinder
for maintaining a volume of compressible Iluid
containinga reciprocatory hollow piston open at i
under pressure in communicationwith the space
its lower end, a liquid within the lower portion
at the ñrst .mentioned side of said piston, and
of said cylinder for sealing the lower end of said
means `for delivering fluid from the second men
piston against the escape of fluid from within 5 tioned side of the piston to the iirst mentioned
the latter during normal operation of said pumpside thereof including a pump having relatively l
ing apparatus, a vent opening into said cylinder
at a point spaced from its upper end, means for
supplying gaseous fluid at a, relatively high pres-
movable parte cooperating to form a Working
chamberand further having an intake connected
With the Second mentiOned Side 0f the piston and
sure to the space within said hollow piston, said 10 a discharge connected with the í'irst mentioned
piston moving upwardly on reduction of the load
Side of the piston, and meanS for effecting rela
on the walking beam, covering said vent and
compressing -fluid within the upper portion of
Said Cylinder, and a, pump mechanism for delìv-
tive movement between said relatively movable
DartS Providing maXirnuIn Volume of Said Work
ing chamber when the volume at the second men
ering fluid from the upper to the lower end of l5 tioned side of the piston iS at a minimum.
said cylinder during operation of said pumping
apparatus,
said
pump
mechanism
l2- In an apparatus of the Cl’iaracte!1 deScl’ihed,
including
in combination, a walking beamfmeans for yield- ,
relatively reciprocablel cylinder and piston eleingly Supporting the Walking beam including rel
ments, one of said elements connected for
atively rcciprocable cylinder and piston elements,
reciprocaticn with said piston and the other 20 one pivotally connected to the walking beam and
element connected for actuation by the walkthe other constituting a stationary Support, the
.ing beam, said connecting means operating
weight of the walking beam tending to diminish
to effect relative reciprocation of said cylinder
the space at one Side of the pieton and to increase
and piston elements in such a manner that the
the space at the other side, means for maintain
working space in said cylinder element ap- 25 ing a volume of compressible fluid under pressure
proaches a maximum when fluid is compressed
in communication With the Space at the ñrSt
in the upper portion of said cylinder, means inmentioned Side of `Said piSton, and means for
cluding an inlet valve for connecting said cylindelivering fluid from the second mentioned side
der element in communication with the cylinder
of the piston to the first mentioned side thereof
space at the upper end of said piston, and means 30 including a Dump operated hy said walking beam
including a discharge valve for connecting said
and having relatively movable parts cooperating
cylinder element in communication with the cylt0 fcI'In a Working chamber andfuï‘ther hal/ing
finder Space at the lower 51de 0f Said piston,
an intake CORRECT/8d With the YSecond lnehtlol’led
l0. A yieldable supporting structure adapted
side of the piston and a diSChal‘ge connected With
for association with a well pumping apparatus 35 the ñrst mentioned side of the piston, and means
of the kind embodying a walking beam, comprisconnected to said walking beam for effecting rel
ing, in combination, means adapted to yieldingly
ative movement between said relatively movable
support the walking beam and including a cylinparte providing maXiInum Volume of Said Work
der containing a reciprocatory hollow piston open
ing chamber When the Volume at the second men
at its lower end, a liquid within the lower portion 40 tîoned Side of the pieton iS at a minimum.
of said cylinder _for sealing the lower end of said
i3. El an apparatus ofthe character described,
piston against the escape of ñuid from within
in combination, a walking beam, means'for yield
the latter during normal operation of said pumpingly supporting the Walking beam including re1
ing apparatus, a vent opening into said cylinder
atively reciprocable cylinder and piston elements,
at a point spaced from its upper end, means for 45 one pivotally connected to the walking beam and
supplying gaseous fluid at a relatively high presthe other constituting a Stationary Support, the
sure to the space within said hollow piston, said
weight of the walking beam tending to diminiSh
piston moving upwardly on reduction of the load
on the walking beam, covering said vent and
compressing fluid within the upper portion of
said cylinder, and a pump mechanism for delivering fluid from the upper to the lower end of
said cylinder during operation of said pumping
apparatus, said pump mechanism including relatively reciprocable cylinder and piston elements,
means connecting said cylinder element for reciprocation with said piston, means connecting
said piston element for actuation by the walking
beam, said piston element being so actuated that
the working space in said cylinder element appreaches a maximum when fluid is compressed
in the upper portion of said cylinder, and means
including inlet and discharge valves for connecting said cylinder element in communication, respectively, with said cylinder at the upper and
lower ends of said piston.
11. In an apparatus of the character described,
in combination, a walking beam, means for yield-
the Space at one side of the pieton element and l
to increase the space at the other side, means for
50 maintaining a volume of compressible fluid under
pressure in communication with the space at the
first mentioned side of said piston element, the
one of said elements connected to the walking
beam operating on the reduction of the load
55 thereon to reduce the space at the second men
tioned side of said piston element, and means
for delivering fluid from the second mentioned
side of said piston to said ñrst mentioned side
including a Dump having a Cylinder` Supported
60 by the one of Said elements PiVOtally Connected
to the walking beam, and a piston connected t0
the walking beam fol' actuation thereby, Said
piStOn S0 actuated that the Working Space in said
pump cylinder approaches a maximum when the
65 Space at the second mentioned side of said piston
element approaches a minimum.,
14. In an apparatus of the character described,
in combination, a walking beam, means for yield
ingly supporting the walking beam including
ingly supporting the walking beam including rela
relatively reciprocable cylinder and piston ele- 70 tively reciprocable cylinder and piston elements,
ments, one pivotally connected to the walking
beam and the other constituting a stationary
support, the weight of the walking beam tending
to diminish the space at one side of the piston
and to increase the space at the other side, means 75
one pivotally connected to the walking beam and
the other constituting a stationary supp-ort, the
weight of the walking beam tending to diminish
the space at one side of the piston and to increase
the space at the other side, means for main
2,408,013
11
12
taining a Volume of compressible ñuid under pres
Walking beam and its load tending todiminish
sure in communication with the space at the
the space at one side of the piston element and
to increase the space at the other side, meansV
for connecting a volume of compressible'fluid
under pressure in communication with the space
Afirst mentioned side of' said piston, the one of
said elements connected to the walking beam
operating on the reduction of the load thereon »
to reduce the space at the second mentioned side
'oi said piston, and means for delivering fluid
from the second mentioned side of said piston
to said ñrst mentioned side including a pump
at the first mentioned side of said piston element',
the one of said elements connected to the walking
beam operating on the reduction of the load
thereon to reduce the space at'the second men
tioned side of said piston element, and means
having relatively movable .pumping elements, one
forr delivering fluid fromV the second mentioned
of said'pumping elements supported by the one
side of said piston element to said iirst men
of said piston and cylinder elements connected
tioned side including a pump having relatively
to the walking beam, and the other of said pump
reciprocable cylinder and piston members, one
ing elements connected to the walking beam -forV
actuation thereby, said pumping element con 15 of said members supported by the one of said
cylinder'and piston'elements connected to the
nected to the walking beam being so actuated
walking beam, and the other of said members
thereby that the working space in said pump
connected to the walking beam at a point spaced
approaches a maximum when the space at the
from itsy pivotal support, said cylinder and piston
second mentioned side of said piston approaches
20 members so arranged that the working space in
a minimum.
said cylinder member is increased as the walking
_ 15. In an apparatus oi the character described,
beam operates to lift the load.
in combination, a walking beam connected at one
17. In an apparatus of the character described,
end to a load to be reciprocated, means for yield
>ingly supporting the walking beam at a point
in'combination, a walking beam, means for yield
ingly supporting the Walking beam. including rela
between its ends including relatively reciprocable
tively recip-rocable cylinder and piston elements,
cylinder and piston elements, one pivotally con
one pivotally connected to the walkingA beam and
nected' to the walking beam and the other con
the other constituting a stationary support, the
stituting a stationary support, the weight of the
weight of the walking beam tending to diminish
walking` beam andrits load tending to diminish
the space at one side of thepistcn and -to increase `
the space at one side> of the piston and to increase
the space at the other side, means for venting
thespace at the other side, means for connect
said cylinder element to atmosphere at a» point
ing> a volume of compressible fluid under pressure
to be uncovered by said piston element as the
in communication with the space at the ñrst men
space at the vsecond Amentioned side of said piston
tioned side of said piston, and means for deliver
ing ñuid from the second mentioned side of said 35 is increased, the one of said elements connected
piston to said ñrst mentioned side including a
to the walking beam operating on theV decrease
pumpV having relativeiy movable pumping eleof load thereon to» cut on“ said venting means
and eiTect an increase in pressure at the'second
ments, one of said pumping elements supported by
mentioned side of said piston, means for main
the one of said piston and cylinder elements con
nected to the walking beam, and the other of 40 taining a volume of compressible-ñuid under pres
said pumping elements connected to the walking
sure in> communication with the space at the first
beam at a point spaced from its pivotal support
mentioned Vside of said piston, and means for.
delivering fluid from the second mentioned.A side
and at the side oi the latter opposite the load
to be reciprocated,.said last mentioned pumping
of the piston to the first mentioned side thereof
including a pump having relatively movable parts
element being so actuated as to effect an increase '
cooperating to form a working chamber and
Y in the working space in said pump as the load
on the walkingv beam is decreased.
16. In an apparatus of theV character described,
in combination, a walking beam connected at one
end to a load to be reciprocated, means for yield 50
ond mentioned side of the piston and a discharge
connected with the ñrst mentioned side of‘the
piston, and means for effecting relative move-~
ingly supporting the walking beam at a point
between its ends including relatively reciprocable
cylinder and piston elements, one pivotally con
ment between said relatively movable parts pro
viding maximum volume of said working chamber
when the volume at the second mentioned side
nected to the walking beam and the other con
of the piston is' at a minimum.
stituting a stationary support, the weight of the 55
further having an intake connected with the sec
'
WADE H. WINEMAN.
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