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US2534436A - Double-action pump - Google Patents

Double-action pump Download PDF

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Publication number
US2534436A
US2534436A US26779A US2677948A US2534436A US 2534436 A US2534436 A US 2534436A US 26779 A US26779 A US 26779A US 2677948 A US2677948 A US 2677948A US 2534436 A US2534436 A US 2534436A
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Prior art keywords
cylinders
pistons
housing
piston
passage
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US26779A
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Gibson Glenn Dean
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F04B47/024Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level actuated by muscle power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical

Definitions

  • Passages Ma and MD are provided adjacent their lower ends with annular valve seats 14c and hid respectively, which are cooperatively associated with ball valves l5 and I6 disposed thereabove.
  • a small chamber Me is formed in block l4 below passages Ma and Mb which is closed at its lower end save for communication through a nipple [4 with the liquid supply therebelow.
  • Casing 5 is closed at its upper end by a combined closure and discharge member indicated as an entirety by the numeral l1, comprising a horizontal plate Ila having integrally cast or otherwise afiixed thereto, a branch discharge fitting I'Ib having a branch connected with the upper end of cylinder 5a and another branch ex- I tending axially of and connected with the upper-- end of the upper passage 50.
  • the rack bars 9 and I2 are interconnected for joint operation in opposite directions by a pinion or spur gear [8 which is revolubly journ'aled on a pivot shaft [9 which extends through a closure plug at one side of the casing and through an aperture formed in the opposite side of the casing.
  • Plug 20 is of a diameter slightly greater than the pinion l'8 to facilitate assembly of the In use, when the pump rod I3 is reciprocated, pistons B and ID are moved in opposite directions within their respective cylinders 5a and 5]).
  • ciprocating power is directly applied to piston l0 through the rack bar .I 2 and is transmittedoppositely to piston 6 through the pinion l8 and rack bar -9.
  • the rack bars 9 and [2 are precisely guided for longitudinal reciprocating movement by means of vertical channel guides 24 and 25 respectively, cast or otherwise formed on the medial portions of the side walls of housing 5. As shown, these channels are formed in inwardly extending lugs which preferably are apertured to permit free passage of liquid through the bodies thereof.
  • the entire mechanism may be very quickly assembled in a unitary housing; comprises a minimum number of working parts and is adapted
  • the cobars and efiicient ball valves provides a high capacity, double acting pump wherein the valves are nicely sealed in their cycles of operation.
  • a double acting pump comprising a unitary housing having a pair of cylinders formed therein, disposed with their axes in parallel relation, one of said cylinders being located adjacent one end of said housing and the other of said cylinders being located adjacent the opposite end of said housing, said casing having a discharge passage communicating with the delivery ends of said cylinders and having an intake passage communicating through branches with the intake ends of said cylinders, check valves disposed in the branches of said intake passage, pistons mounted for reciprocation in said cylinders and each having aliquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, means extending beyond said housing for reciprocating one of said pistons and means mounted in said housing for interconnecting said pistons to drive said pistons in opposite directions, the inner ends of said cylinders being spaced apart in a direction longitudinally of said housing and said last mentioned means comprising-a pinioninterposed in said housing between the inner ends of said cylinders and longitudinal rack bars connected with each of said pistons and interme
  • a double acting pump comprising a unitary housing having a pair of cylinders longitudinally formed therein and disposed with their axes in parallel relation but with their circumferences in overlapping relation, one of said cylinders being located adjacent one end of said housing and the other of said cylinders being located adjacent the opposite end of said housing the inner ends of said cylinders being spaced a short dismounted for reciprocation in said cylinders and each having a liquid passage therethrough and valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, each of said pistons having a rack bar connected therewith, said rack bars being disposed in parallel relation with racks opposed and a inion mounted within said housing and interposed between the inner ends of said cylinders for interconnecting said rack bars to drive said pistons in opposite directions.
  • a double acting pump comprising a casing having a pair of cylinders formed therein, with their axes in parallel relation but with their circumferences in overlapping relation, said casing having a discharge passage communicating with the delivery ends of said cylinders and having an intake passage communicating with the intake ends of said cylinders, pistons mounted for reciprocation in said cylinders and each having a liquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, a pinion mounted medially of said casing within the same, with portions of its periphery exposed in said respective cylinders, a rack bar connected with one of said pistons and extending generally axially thereof and in mesh with one side of said pinion, an oppositely extending rack bar connected with the other of said pistons and extending generally axially thereof and being in mesh with the opposite portion of the periphery of said pinion, a reciprocable actuating rod connected with one of said rack bars, and check valves in the intake passages of said cylinder.
  • a double acting pump comprising a housing having a pair of cylinders therein disposed with their axes in parallel relation but with their circumferences in overlapping relation, one of cylinders being disposed adjacent one end of said housing and the other of said cylinders being disposed adjacent the opposite end of said housing, said casing having a discharge passage communicating with the delivery end of said cylinders and having an intake passage communicating with the intake ends of said cylinders, pistons mounted for reciprocation in said cylinders and each having a liquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, each of said pistons having a rack bar connected therewith, said rack bars being disposed in parallel relation with racks opposed and a pinion journaled intermediately of the ends of said rack bars and intermeshed with the racks thereof for interconnecting said rack bars to drive said pistons in opposite directions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

Dec. 19,- 1950 G. D. GIBSON DOUBLE-ACTION PUMP Filed May 13, 1948 IG. F 2
lm 5c I8 42a 9 i i I i rr\lo g u i 55 n i l: 4% 5! it 5 INVENTOR.
GLENN DEAN GIBSON ATTORNEYS avery short-stroke, a
communicating respectively with the lower end of the passage 5d and the lower end of the lower cylinder 5b. Passages Ma and MD are provided adjacent their lower ends with annular valve seats 14c and hid respectively, which are cooperatively associated with ball valves l5 and I6 disposed thereabove. A small chamber Me is formed in block l4 below passages Ma and Mb which is closed at its lower end save for communication through a nipple [4 with the liquid supply therebelow.
Casing 5 is closed at its upper end by a combined closure and discharge member indicated as an entirety by the numeral l1, comprising a horizontal plate Ila having integrally cast or otherwise afiixed thereto, a branch discharge fitting I'Ib having a branch connected with the upper end of cylinder 5a and another branch ex- I tending axially of and connected with the upper-- end of the upper passage 50.
The rack bars 9 and I2 are interconnected for joint operation in opposite directions by apinion or spur gear [8 which is revolubly journ'aled on a pivot shaft [9 which extends through a closure plug at one side of the casing and through an aperture formed in the opposite side of the casing. Plug 20 is of a diameter slightly greater than the pinion l'8 to facilitate assembly of the In use, when the pump rod I3 is reciprocated, pistons B and ID are moved in opposite directions within their respective cylinders 5a and 5]). Re-
ciprocating power is directly applied to piston l0 through the rack bar .I 2 and is transmittedoppositely to piston 6 through the pinion l8 and rack bar -9. The rack bars 9 and [2 are precisely guided for longitudinal reciprocating movement by means of vertical channel guides 24 and 25 respectively, cast or otherwise formed on the medial portions of the side walls of housing 5. As shown, these channels are formed in inwardly extending lugs which preferably are apertured to permit free passage of liquid through the bodies thereof.
In the upward movement of each of the pistons '5 and II], the ball valves 1 and H are closed and sealed against their respective seats and the-action of the piston lifts the water above it, upwardly, while at the same time by suction, drawing water through the intake passages Ma and Nb as the case may be. In the downward strokes of pistons B and 10, the ball valves 1 and H are dislodged upwardly from their seats and check valves I 5 and It in the intake of the housing, are
closed.
It will be apparent that as piston 6 is moving upwardly in its cylinder 5a in the pumping stroke, the piston IE! is moving downwardly through the liquid contained in cylinder 5b. The result is that an almost continuous uniform discharge of liquid through pipe P is effected even when the pump rod I3 is reciprocated through to withstand long continued use. .operation of reciprocating piston parts, rack The overlapping relationship of the paths of the two pistons 6 and I0 and their associated cylinders brings about an application of power through reciprocation of rod l3 axially of piston l0 and offset only a short distance from the longitudinal axis of piston 6. Furthermore, such arrangement enables my structure and the working parts thereof to be very closely compacted into a small unitary structure.
The entire mechanism may be very quickly assembled in a unitary housing; comprises a minimum number of working parts and is adapted The cobars and efiicient ball valves provides a high capacity, double acting pump wherein the valves are nicely sealed in their cycles of operation.
It will of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of my invention.
What I claim is:
1. A double acting pump comprising a unitary housing having a pair of cylinders formed therein, disposed with their axes in parallel relation, one of said cylinders being located adjacent one end of said housing and the other of said cylinders being located adjacent the opposite end of said housing, said casing having a discharge passage communicating with the delivery ends of said cylinders and having an intake passage communicating through branches with the intake ends of said cylinders, check valves disposed in the branches of said intake passage, pistons mounted for reciprocation in said cylinders and each having aliquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, means extending beyond said housing for reciprocating one of said pistons and means mounted in said housing for interconnecting said pistons to drive said pistons in opposite directions, the inner ends of said cylinders being spaced apart in a direction longitudinally of said housing and said last mentioned means comprising-a pinioninterposed in said housing between the inner ends of said cylinders and longitudinal rack bars connected with each of said pistons and intermeshed with said pinion.
2. A double acting pump comprising a unitary housing having a pair of cylinders longitudinally formed therein and disposed with their axes in parallel relation but with their circumferences in overlapping relation, one of said cylinders being located adjacent one end of said housing and the other of said cylinders being located adjacent the opposite end of said housing the inner ends of said cylinders being spaced a short dismounted for reciprocation in said cylinders and each having a liquid passage therethrough and valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, each of said pistons having a rack bar connected therewith, said rack bars being disposed in parallel relation with racks opposed and a inion mounted within said housing and interposed between the inner ends of said cylinders for interconnecting said rack bars to drive said pistons in opposite directions.
3. The structure set forth in claim 2 and means connected with one of said pistons for connection with a reciprocating rod extending beyond said housing to actuate said pistons.
4. A double acting pump comprising a casing having a pair of cylinders formed therein, with their axes in parallel relation but with their circumferences in overlapping relation, said casing having a discharge passage communicating with the delivery ends of said cylinders and having an intake passage communicating with the intake ends of said cylinders, pistons mounted for reciprocation in said cylinders and each having a liquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, a pinion mounted medially of said casing within the same, with portions of its periphery exposed in said respective cylinders, a rack bar connected with one of said pistons and extending generally axially thereof and in mesh with one side of said pinion, an oppositely extending rack bar connected with the other of said pistons and extending generally axially thereof and being in mesh with the opposite portion of the periphery of said pinion, a reciprocable actuating rod connected with one of said rack bars, and check valves in the intake passages of said cylinder.
5. A double acting pump comprising a housing having a pair of cylinders therein disposed with their axes in parallel relation but with their circumferences in overlapping relation, one of cylinders being disposed adjacent one end of said housing and the other of said cylinders being disposed adjacent the opposite end of said housing, said casing having a discharge passage communicating with the delivery end of said cylinders and having an intake passage communicating with the intake ends of said cylinders, pistons mounted for reciprocation in said cylinders and each having a liquid passage therethrough and a valve adapted to close said passage when the piston is moved towards the discharge end of its stroke, each of said pistons having a rack bar connected therewith, said rack bars being disposed in parallel relation with racks opposed and a pinion journaled intermediately of the ends of said rack bars and intermeshed with the racks thereof for interconnecting said rack bars to drive said pistons in opposite directions.
GLENN DEAN GIBSON.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 141,807 Morrell et a1. Aug. 12, 1873 1,896,445 Gibson Feb. 7, 1933
US26779A 1948-05-13 1948-05-13 Double-action pump Expired - Lifetime US2534436A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171290A (en) * 1961-02-20 1965-03-02 Hydroconic Ltd Power-assisted control systems
DE1284240B (en) * 1962-02-05 1968-11-28 Clark Equipment Co Rack and pinion drive with hydraulic drive, especially for forklifts
US5417144A (en) * 1991-02-15 1995-05-23 Petterson; Tom Power transmission device for linear movements
FR2732079A1 (en) * 1995-03-22 1996-09-27 Sorelec Reciprocating pump for pumping water or oil from underground reservoirs
US20060153720A1 (en) * 2003-07-03 2006-07-13 Hauge Tor A Pump for tail production of oil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US141807A (en) * 1873-08-12 Improvement in submerged pumps
US1896445A (en) * 1931-08-24 1933-02-07 Gibson Fred Pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US141807A (en) * 1873-08-12 Improvement in submerged pumps
US1896445A (en) * 1931-08-24 1933-02-07 Gibson Fred Pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171290A (en) * 1961-02-20 1965-03-02 Hydroconic Ltd Power-assisted control systems
DE1284240B (en) * 1962-02-05 1968-11-28 Clark Equipment Co Rack and pinion drive with hydraulic drive, especially for forklifts
US5417144A (en) * 1991-02-15 1995-05-23 Petterson; Tom Power transmission device for linear movements
FR2732079A1 (en) * 1995-03-22 1996-09-27 Sorelec Reciprocating pump for pumping water or oil from underground reservoirs
US20060153720A1 (en) * 2003-07-03 2006-07-13 Hauge Tor A Pump for tail production of oil

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