US2545315A - Pump - Google Patents

Pump Download PDF

Info

Publication number
US2545315A
US2545315A US649461A US64946146A US2545315A US 2545315 A US2545315 A US 2545315A US 649461 A US649461 A US 649461A US 64946146 A US64946146 A US 64946146A US 2545315 A US2545315 A US 2545315A
Authority
US
United States
Prior art keywords
ring
eccentric
pistons
outlet
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US649461A
Inventor
Edith M Sproull
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US649461A priority Critical patent/US2545315A/en
Application granted granted Critical
Publication of US2545315A publication Critical patent/US2545315A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404Details or component parts
    • F04B1/0426Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • 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
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06Control
    • F04B1/07Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
    • F04B49/126Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts with a double eccenter mechanism

Definitions

  • Fig-ure'l is a horizontalsectional view takenon the line of Figure "2;
  • Figured is a vertical sectional view taken -on the'line 2-4 of " Figure -1.
  • the numeral 1 designates a gear case which is tubular in form and which is supported on any suitable base, as '2.
  • a frame comprising a supporting plate 3 with the concentricupstanding outer and inner annular flanges .4 and 5 .secured thereto in any preferred manner.
  • This :ecc entr-ic is mounted-w ithin thering B and said ring and-eccentric have registering raceways inwhich the anti-'frictionballs 19 are mounted.
  • the segment I' LJ-the ring8 and the 'balls I 9 may be assembled by leaving agate -inpne of said adjacen-t parts for inserting the "bails, which gate may then be closed, in any preferred manner, by welding or otherwise.
  • the intake pipes 2l are-connected into the'common iriletmanifold 25 with which the inletsuction line "26 is connected and the outlet pipes 23 are tormented into a cominonoutlet manifold TI into which the discharge line 28 is connected.
  • a pump of the character described comprising a frame having concentric upstanding flanges, radial cylinders extended through and anchored to said flanges, pistons in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to said ring, an eccentric within the ring, said eccentric being adjustable to var the range of oscillation of the ring, means for driving the eccentric, a valve controlled intake pipe entering the outer end of each cylinder, a valve controlled outlet pipe leading from the outer end of each cylinder, inlet and outlet manifolds with which the respective intake and outlet pipes are connected, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
  • a pump of the character described comprising a frame having upstanding outer and inner flanges, radial cylinders extended through, and secured to the flanges, pistons reciprocable in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to the ring, an eccentric within the ring, a shaft splined to the eccentric, driving gearing for driving the shaft and eccentric to oscillate the ring and reciprocate the pistons, said eccentric being adjustable to vary the range of the eccentric, to thereby vary the stroke of the pump, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
  • a pump of the character described comprising, a gear case, a frame with supporting plate mounted thereon, said supporting plate 1 having concentric upstanding outer and inner annular flanges secured thereto, radial cylinders extended through the flanges, pistons reciprocable in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to said ring, an eccentric mounted within the ring and being adjustable to vary the range of oscillation of the ring, a shaft mounted within a bearing secured within the gear case, driving gearing in the gear case for driving the shaft, said shaft being splined to said eccentric to oscillate the ring and reciprocate the pistons, a valve controlled intake pipe entering the outer end of each cylinder, a valve controlled outlet pipe leading from the outer end of each cylinder, inlet and outlet manifolds with which the respective intake and outlet pipes are connected, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
  • a pump of the character described comprising, a frame with supporting plate secured thereto, concentric upstanding flanges secured to said plate, a plurality of radial cylinders extended through and anchored to said flanges, pistons in the cylinders, a shaft concentric with said flanges and centrally located with respect to said cylinders, an oscillatable ring and connecting rods pivoted at their outer ends to the pistons and at their inner ends to the ring, an eccentric disc splined to said shaft and mounted within the ring, an eccentric segment adjustably secured to the disc, to vary the range of the disc and thereby to vary the stroke of the pump, driving gearing for rotating the shaft and said eccentric in order to oscillate the ring and reciprocate the pistons, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the I respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line'leading from the outlet 7

Landscapes

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

Description

March 13, 1951 c. w. SPROULL PUMP 2 Sheets-Sheet 1 Filed Feb. 25, 1946 March 13, 1951 c. w. SPROULL 2,545,315
PUMP
Filed Feb. 23, 1946 2 Sheets-Sheet 2 LLH 17 Patented Mar. 13, 1951 iii-u:
"ran .as'r A-rns an ccharles ESprmill, Houston, "lfiex; LEdith :Sproull :executrix :cf (lharrles TW. tispmull,
deceased .Appiicanonrebmary 23, 1946,'SeriaL-No. 6492261 6::Glaims. (Cl. NIB-7453) segment 'fl which he 'bdlted "to the disc H novel type of frame wherein the cylinders *and EM) the piston driving mechanism are mounted.
it is af-urther 'object of the invention to provide a pump of the character described wherein the piston driving mechanism may be readily adjusted to control the stroke of the pistons.
(other objects andadvantages will be "apparent from the following specification which is illustrated by the accompanying-drawings, wherein:
Fig-ure'l is a horizontalsectional view takenon the line of Figure "2; and
Figured is a vertical sectional view taken -on the'line 2-4 of "Figure -1.
Referring now more particularly -'to the drawings wherein like numerals of reference designate the same parts in each of the figures, the numeral 1 designates a gear case which is tubular in form and which is supported on any suitable base, as '2. Mounted on the gear case and suitably secured thereto there is .a frame comprising a supporting plate 3 with the concentricupstanding outer and inner annular flanges .4 and 5 .secured thereto in any preferred manner.
Extending through flanges and suitably secured thereto there are a plurality of radial cylinders wherein the pistons I are mounted to reciprocate.
These pistons are connected .to a ring 8 by means .0! the connecting rods 8 whose outer ends are pivoted to the respectivepistons and whosefinner ends are pivotal'ly connected to said ring 8.
Within the gear case I and fastened to the plate 3 thereis a bearing 10 in which the vertical shaft 11 is mounted to rotate.
Fixed on the lower end of the shaft ILI thereis ala'rge bevel gear wheel l2 which is in mesh and driven by a bevel pinion 113 which is fixed on i =-by a series of loolts I 8 or said segment [1 may he otherwise adjust-ably secured "to the dis'c Ni. I h'e segment i! *is circular in shapebu't it is eccentric with respecttd-the disc 16 andby'loosening the bolts l8 said segment may be adjusted dircum- 'ierentially about the disc I 6.
.said'idisc' 'l fiandthe segment F-I for-n1"an-reticentric which rotates with-the shaft H. 4
This :ecc entr-ic is mounted-w ithin thering B and said ring and-eccentric have registering raceways inwhich the anti-'frictionballs 19 are mounted.
The segment I' LJ-the ring8 and the 'balls I 9 may be assembled by leaving agate -inpne of said adjacen-t parts for inserting the "bails, which gate may then be closed, in any preferred manner, by welding or otherwise.
As the eccentric rotates with "the shaft H the "ring 8 "will he osciilate'd and will impart horrespending strokes to'the pistons in the cyI-inders 3.
Connected to the outer ends of the respective cylinders are the ma-ni'fold's 2-0.
"Leading into corre'sponding en'd-sof the inanii'oids "2'0 are the intakepipes -21 which are controlled bythe inwardly opening intake valves '22. Leading "outwardly from the opposite ends of said manifolds are the 'outlet 'pipes 23 which are controlledby the 'corresponding outlet valves 24.
The intake =pipes 2l are-connected into the'common iriletmanifold 25 with which the inletsuction line "26 is connected and the outlet pipes 23 are tormented into a cominonoutlet manifold TI into which the discharge line 28 is connected.
Accordinglyupon-rotation ofthe-eccentric, fluid will be constantly drawn in through -the suction "line 26 and discharged through the discharge line 28 and the capacity cfthe pumpimay'loe regulated by theadj ustment of the'ec'centric segment W, as
"hereina'bove explained.
An an-ti-Trictionbearing assembly!!! 'i's'provid'ed between the hub of the :dis'c B .and 'the frame of thepump.
The drawings and description are illustrative merely While the "broad principle of the invention will he defined by the appended claims.
What aclaiin .1. of the nti aracter described .comprising -.a.g ear case, .a frame mounted thereon having upstanding outer and inner flanges, radial cylinders extended through, and secured to the flanges, pistons reciprocable in the cylinders, an oscillatable ring connecting rods piv oted at their outer ends to the pistons and at their inner ends to the ring, an eccentric within the ring, a shaft splined to the eccentric, driving gearing in the gear case for driving the shaft and eccentric to oscillate the ring and reciprocate the pistons, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
2. A pump of the character described comprising a frame having concentric upstanding flanges, radial cylinders extended through and anchored to said flanges, pistons in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to said ring, an eccentric within the ring, said eccentric being adjustable to var the range of oscillation of the ring, means for driving the eccentric, a valve controlled intake pipe entering the outer end of each cylinder, a valve controlled outlet pipe leading from the outer end of each cylinder, inlet and outlet manifolds with which the respective intake and outlet pipes are connected, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
3. A pump of the character described comprising a frame having upstanding outer and inner flanges, radial cylinders extended through, and secured to the flanges, pistons reciprocable in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to the ring, an eccentric within the ring, a shaft splined to the eccentric, driving gearing for driving the shaft and eccentric to oscillate the ring and reciprocate the pistons, said eccentric being adjustable to vary the range of the eccentric, to thereby vary the stroke of the pump, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
4. A pump of the character described comprising, a gear case, a frame with supporting plate mounted thereon, said supporting plate 1 having concentric upstanding outer and inner annular flanges secured thereto, radial cylinders extended through the flanges, pistons reciprocable in the cylinders, an oscillatable ring, connecting rods pivoted at their outer ends to the pistons and at their inner ends to said ring, an eccentric mounted within the ring and being adjustable to vary the range of oscillation of the ring, a shaft mounted within a bearing secured within the gear case, driving gearing in the gear case for driving the shaft, said shaft being splined to said eccentric to oscillate the ring and reciprocate the pistons, a valve controlled intake pipe entering the outer end of each cylinder, a valve controlled outlet pipe leading from the outer end of each cylinder, inlet and outlet manifolds with which the respective intake and outlet pipes are connected, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
5. A pump of the character described comprising, a frame with supporting plate secured thereto, concentric upstanding flanges secured to said plate, a plurality of radial cylinders extended through and anchored to said flanges, pistons in the cylinders, a shaft concentric with said flanges and centrally located with respect to said cylinders, an oscillatable ring and connecting rods pivoted at their outer ends to the pistons and at their inner ends to the ring, an eccentric disc splined to said shaft and mounted within the ring, an eccentric segment adjustably secured to the disc, to vary the range of the disc and thereby to vary the stroke of the pump, driving gearing for rotating the shaft and said eccentric in order to oscillate the ring and reciprocate the pistons, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the I respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line'leading from the outlet 7 registering raceways in which antifriction balls are mounted, an adjustable segment mounted around said eccentric to vary the range of the eccentric and thereby to vary the stroke of the pump, driving gearing for rotating the shaft and said eccentric. to oscillate the ring and reciprocate the pistons, intake and outlet pipes connected into the outer ends of the cylinders, inlet and outlet manifolds into which the respective intake and outlet pipes are connected, valves controlling the intake and outlet pipes, a suction line entering the inlet manifold and a discharge line leading from the outlet manifold.
CHARLES W. SPROULL.
REFERENCES CITED The following references are of record in the file of this patent:
Joy Oct. 6,
US649461A 1946-02-23 1946-02-23 Pump Expired - Lifetime US2545315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US649461A US2545315A (en) 1946-02-23 1946-02-23 Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US649461A US2545315A (en) 1946-02-23 1946-02-23 Pump

Publications (1)

Publication Number Publication Date
US2545315A true US2545315A (en) 1951-03-13

Family

ID=24604887

Family Applications (1)

Application Number Title Priority Date Filing Date
US649461A Expired - Lifetime US2545315A (en) 1946-02-23 1946-02-23 Pump

Country Status (1)

Country Link
US (1) US2545315A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216355A (en) * 1963-02-25 1965-11-09 Seeger Wanner Corp Two-cylinder pump
US3447479A (en) * 1967-06-02 1969-06-03 Pall Corp Syringe pump
US3613510A (en) * 1970-04-17 1971-10-19 Hydranautics Fluid pressure apparatus with orbiting oscillator
US4080107A (en) * 1975-09-08 1978-03-21 Industrie Pirelli Societa Per Azioni Bellows pump and pumping plant for oil-filled electric cables
US4411190A (en) * 1981-05-07 1983-10-25 Kilmer John B Energy translation device having individually compensated sliding valves and counterbalancing mechanism
US4684143A (en) * 1985-04-05 1987-08-04 Yasunori Sato Two-wheeled vehicle with hydraulic transmission
DE3605213A1 (en) * 1986-02-19 1987-08-20 Uwe Niebuhr Single-acting or double-acting radial piston pump or motor of pumpable substances as well as various explosives in use as an internal combustion engine
US4963075A (en) * 1988-08-04 1990-10-16 The Charles Machine Works, Inc. Radial diaphragm pump
US5492535A (en) * 1994-04-06 1996-02-20 Cordis Corporation Hand-powered pumping apparatus for perfusion and other fluid catheterization procedures
US5529463A (en) * 1994-04-19 1996-06-25 Cordis Corporation Pumping apparatus for perfusion and other fluid catheterization procedures
EP0791366A1 (en) * 1996-02-23 1997-08-27 Medela AG Suction device
US20130039789A1 (en) * 2009-12-17 2013-02-14 Óscar Donado-Muñoz Vacuum, pressure or liquid pump

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US139840A (en) * 1873-06-10 Improvement in pump and fire-engines
US185390A (en) * 1876-12-19 Improvement in steam pumping machinery
US831890A (en) * 1906-01-06 1906-09-25 Maurice George Plane Positive-feed mechanical lubricator.
US1040057A (en) * 1912-02-09 1912-10-01 John J Tokheim Rotary pump.
US1122124A (en) * 1914-02-14 1914-12-22 Peter Johnsen Fuel-charging and charge-forming apparatus for internal-combustion engines.
US1212791A (en) * 1911-02-04 1917-01-16 Charles M Manly Variable-capacity pump.
US1477300A (en) * 1921-05-31 1923-12-11 Homer C Thrift Pump
US2074618A (en) * 1934-08-01 1937-03-23 Clyde A Roeder Pumping system
US2255851A (en) * 1940-10-21 1941-09-16 Radial Pump And Compressor Com Pump assembly
US2257854A (en) * 1938-07-12 1941-10-07 Joseph A Peterson Pressure regulator for fluids
US2266003A (en) * 1940-10-04 1941-12-16 Omar E Clark Pump or compressor
US2297707A (en) * 1940-02-14 1942-10-06 Sullivan Machinery Co Mechanical movement

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US139840A (en) * 1873-06-10 Improvement in pump and fire-engines
US185390A (en) * 1876-12-19 Improvement in steam pumping machinery
US831890A (en) * 1906-01-06 1906-09-25 Maurice George Plane Positive-feed mechanical lubricator.
US1212791A (en) * 1911-02-04 1917-01-16 Charles M Manly Variable-capacity pump.
US1040057A (en) * 1912-02-09 1912-10-01 John J Tokheim Rotary pump.
US1122124A (en) * 1914-02-14 1914-12-22 Peter Johnsen Fuel-charging and charge-forming apparatus for internal-combustion engines.
US1477300A (en) * 1921-05-31 1923-12-11 Homer C Thrift Pump
US2074618A (en) * 1934-08-01 1937-03-23 Clyde A Roeder Pumping system
US2257854A (en) * 1938-07-12 1941-10-07 Joseph A Peterson Pressure regulator for fluids
US2297707A (en) * 1940-02-14 1942-10-06 Sullivan Machinery Co Mechanical movement
US2266003A (en) * 1940-10-04 1941-12-16 Omar E Clark Pump or compressor
US2255851A (en) * 1940-10-21 1941-09-16 Radial Pump And Compressor Com Pump assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216355A (en) * 1963-02-25 1965-11-09 Seeger Wanner Corp Two-cylinder pump
US3447479A (en) * 1967-06-02 1969-06-03 Pall Corp Syringe pump
US3613510A (en) * 1970-04-17 1971-10-19 Hydranautics Fluid pressure apparatus with orbiting oscillator
US4080107A (en) * 1975-09-08 1978-03-21 Industrie Pirelli Societa Per Azioni Bellows pump and pumping plant for oil-filled electric cables
US4411190A (en) * 1981-05-07 1983-10-25 Kilmer John B Energy translation device having individually compensated sliding valves and counterbalancing mechanism
US4684143A (en) * 1985-04-05 1987-08-04 Yasunori Sato Two-wheeled vehicle with hydraulic transmission
DE3605213A1 (en) * 1986-02-19 1987-08-20 Uwe Niebuhr Single-acting or double-acting radial piston pump or motor of pumpable substances as well as various explosives in use as an internal combustion engine
US4963075A (en) * 1988-08-04 1990-10-16 The Charles Machine Works, Inc. Radial diaphragm pump
US5492535A (en) * 1994-04-06 1996-02-20 Cordis Corporation Hand-powered pumping apparatus for perfusion and other fluid catheterization procedures
US5529463A (en) * 1994-04-19 1996-06-25 Cordis Corporation Pumping apparatus for perfusion and other fluid catheterization procedures
EP0791366A1 (en) * 1996-02-23 1997-08-27 Medela AG Suction device
US20130039789A1 (en) * 2009-12-17 2013-02-14 Óscar Donado-Muñoz Vacuum, pressure or liquid pump

Similar Documents

Publication Publication Date Title
US2545315A (en) Pump
US2243978A (en) Rotary hydraulic intensifier
US3202101A (en) Method and means for preventing cavitation in hydraulic piston and vane pumps
US2801596A (en) Multi-cylinder pump
US2415181A (en) Air cylinder
US2371704A (en) Double-action pump
US2031125A (en) Spherical machine
US2460527A (en) Wind pump for aerating bait containers
US2368933A (en) Internal-combustion engine
US2369867A (en) Variable-delivery pump
US1466230A (en) Radiating piston pump
US1326889A (en) Pump or engine construction
US3107622A (en) Combined hydraulic and pneumatic pump and motor unit for simultaneous air, vacuum and fluid circulation
US3945763A (en) Rotating lever-actuated pumping apparatus
US2663264A (en) Rotary pump
US2702025A (en) Pumping jack
US1375160A (en) Air-pump
SU797609A3 (en) Axial piston hydromachine
US123130A (en) Improvement in rotary pumps
US2202520A (en) Fluid displacement mechanism
US966511A (en) Current-wheel.
US2026479A (en) Compressor
US1300706A (en) Rotary engine.
US4141215A (en) Windmill mechanism
US1321764A (en) Rotary air-compressor