US2445232A - Pump - Google Patents

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Publication number
US2445232A
US2445232A US249805A US24980539A US2445232A US 2445232 A US2445232 A US 2445232A US 249805 A US249805 A US 249805A US 24980539 A US24980539 A US 24980539A US 2445232 A US2445232 A US 2445232A
Authority
US
United States
Prior art keywords
cylinder block
controlling
driving
axis
face
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
US249805A
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English (en)
Inventor
Molly Hans
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
Application granted granted Critical
Publication of US2445232A publication Critical patent/US2445232A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F01B3/0052—Cylinder barrel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0076—Connection between cylinder barrel and inclined swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2021—Details or component parts characterised by the contact area between cylinder barrel and valve plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2064—Housings
    • F04B1/2071—Bearings for cylinder barrels

Definitions

  • This invention relates to improvements in or relating to hydraulically operating transmitting devices of the piston type, comprising a cylinder block having several cylinder bores, said block being rotatably mounted around its longitudinal axis, and a driving member whose axis of rotation may be inclined to the longitudinal axis of the cylinder block for changing the piston stroke.
  • the piston rods of the piston reciprocating in said cylinder block are hinged to said driving member.
  • the well known devices of this type are usually provided with a Cardan joint for driving the cylinder block from the driving member.
  • Cardan joint is arranged to simulembodiment the play between the piston and piston rod is limited to the kinetically necessary freedom of movement and this freedom of movement is restricted as much as possible, the piston rods will already afford a centering between the cylinder block and driving flange in the driving flange plane, i. e., a centering with respect the center of the effective driving plane.
  • the primary object of the invention is to provide a special centering member for positively guiding said driving member and said cylinder block with respgct to one another concentrically to the centre of the effective driving plane.
  • This centre is to be defined as the centre in which the driving member axis intersects the plane comprising the hinge points of the piston rods to the
  • gears in which the inclination between the cylinder block axis and the driving flange axis is variable in relation to the variations of the stroke small deviations of the axis of inclination from the effective driving flange plane are permissible which is very desirable with respect to difficulties of mounting and displacements by forces. It is further of essential importance that on account of this arrangement no further support of the cylinder block in the tilting frame is necessary beyond its fixation by means of the controllingsurfaces.
  • a further object of the invention is to overcome the difiiculties encountered in cases in which said special centering member is provided and at 3 and 10, Public Law 690, August 8, 1946 Patent expires January 5, 1958 2 the same time the piston rods are hinged to the driving member.
  • the invention aims to improve the means for hydraulically relieving the controlling mirror face cooperating with the end face of the cylinder block.
  • Fig. 1 is a sectional view of the transmitting device according to one embodiment of the invention.
  • Fig. 2 is a sectional view of the transmitting device according to another embodiment, in which the controlling mirror face and the end face of the cylinder block are spherically formed.
  • Fig. 3 is a plane view of the control orifices of the rotating cylinder block of Fig. 1.
  • FIG. 1 illustrates the wellknown transmitting device of the piston type, comprising a cylinder block I having several cylinder bores 3 arranged around the axis of rotation 2.
  • 4 is a piston provided in each of said bores 3, the piston rod 4a being hinged at its outer end to a driving disc or flange 6 by means of a ball 5.
  • the axis of rotation I of the driving disc 6 may be inclined relative to the cylinder block I as shown in Fig. 2.
  • the cylinder block I is swingably mounted around an axis 8 passing through the point of intersection of the two axes 2 and I mentioned above. Therefore, the axis 8 lies in the plane comprising the centre of the balls 5.
  • FIG. 9 is a frame mounted for angular adjustment around the axis 8, said frame being shown to have a controlling mirror face In which is in engaging relation with the end face of the cylinder block I so as to control in a wellknown manner the communication of the cylinder bores 3 with the input and the output channels II and [2 respectively.
  • the ball I3 is arranged on the cylinder block I, whilst the supplemental ball cup I' l surrounding said ball 13 is mounted on the driving discor flange 6.
  • the ball I3 is guided in acentric bore I5 of the cylinder block I and 3 is kept in engaging relation in said cup hi by means of a spring it.
  • the ball and its cup may be exchanged, i, e., the ball may be arranged on the drivingdisc or flange ti and the cup on the cylinder block Land thus it is possible'to fixedly-arrange the ball to the driving disc.
  • the bail-13 isarrange'd axially displaceable on the cylinder block- I -as shown in Fig. 1.
  • the ball l3- may displace itself in said bore l5.
  • the'end face 'of the cylinder block i' is always held in-contactwith the controlling mirror face iii.
  • the cylinder block may be displaced in its longitudinal direction .in order to guarantee the engagement of or contact withithe controlling mirror surface and to rerid'erineffec- 'tive'any deviations of the pivot axist 'fr'om'the effective driving disc plane.
  • the force Pr compensates foranyunbalance between PS and Pk, which explains the function of the relief chamber'l'fla.
  • controlling openings ll' may be vertical to the controllingmirror in spite of their inclined position inthe cylinder 5; block.
  • the ball'form of the controlling mirror ' also 'results in a'decrease of the diameterd-ofthecontact surface of the cylinder "bloclethisbeingnot only favourable with respect to the friction-losses, but also has the advantage that'the'cylinder bores may lead through the'entirelengthof the cylinder block in order to close'them afterwards bymeans of a stop 20 or the'like. 'Th'ese lleoutside of the controlling mirror surface'and, therefore, cannot influence its-quality.
  • a cylinder block formed with a plurality of cylinder bores approximately parallel to the axis of said block, each of said cylinder bores being provided with and communicating with a respective controlling orifice in the end face of said block and said end face being spherical; means for supporting said block for rotation about its axis, said means having a spherical controlling surface cooperating with said controlling orifices in said spherical end face and supporting only said end face of said block; a driving flange mounted for rotation about an axis which latter is inclined to the axis of rotation of said cylinder block; a centering joint for concentrically guiding said driving flange and said cylinder block with respect to one another, the center of said joint coinciding with the driving plane of said driving flange; pistons in said cylinder bores; a piston rod for each of said pistons operatively connected to said driving flange and to its respective piston, said piston rods transmitting the driving movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
US249805A 1938-01-05 1939-01-07 Pump Expired - Lifetime US2445232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA4117D DE882932C (de) 1938-01-05 1938-01-05 Raeumlich arbeitendes Hubkolbengetriebe

Publications (1)

Publication Number Publication Date
US2445232A true US2445232A (en) 1948-07-13

Family

ID=6920426

Family Applications (1)

Application Number Title Priority Date Filing Date
US249805A Expired - Lifetime US2445232A (en) 1938-01-05 1939-01-07 Pump

Country Status (3)

Country Link
US (1) US2445232A (sv)
DE (1) DE882932C (sv)
SE (1) SE98337C1 (sv)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608158A (en) * 1945-06-08 1952-08-26 Hulman Pump
US2655616A (en) * 1944-05-24 1953-10-13 English Electric Valve Co Ltd Magnetron
US2834297A (en) * 1953-02-12 1958-05-13 Vickers Inc Power transmission
US2921536A (en) * 1955-09-26 1960-01-19 Richard T Cornelius Multiple cylinder pump
US2967491A (en) * 1953-01-24 1961-01-10 Wiggermann Georg Rotary piston pumps
US3092034A (en) * 1959-02-18 1963-06-04 Kamper Motoren G M B H Axial piston engines
US5094146A (en) * 1988-01-04 1992-03-10 Hans Molly Axial piston type motor
DE102012004303A1 (de) 2012-03-01 2013-09-05 Robert Bosch Gmbh Hydrostatischer Axialkolbenmotor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776627A (en) * 1952-07-10 1957-01-08 Vickers Inc Power transmission
DE1140421B (de) * 1957-07-06 1962-11-29 Bosch Gmbh Robert Hydraulisches Getriebe mit umlaufendem Zylinderkoerper

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925148A (en) * 1906-07-20 1909-06-15 Waterbury Tool Co Variable-speed gear.
US1137283A (en) * 1910-07-26 1915-04-27 Universal Speed Control Company Rotary-piston power transmission.
US1263180A (en) * 1909-04-14 1918-04-16 Waterbury Tool Co Variable-speed gear.
US1624363A (en) * 1923-10-08 1927-04-12 Rey Augustin Pump
US1822064A (en) * 1930-06-23 1931-09-08 Clarence S Sorensen Compressor
US1924629A (en) * 1929-11-13 1933-08-29 Thoma Hans Hydraulic pump and motor
US2069651A (en) * 1935-02-18 1937-02-02 Oilgear Co Pump or motor
US2140633A (en) * 1936-03-17 1938-12-20 Kocks Fritz Means for driving tube drawing benches
US2146133A (en) * 1936-06-01 1939-02-07 Waterbury Tool Co Power transmission
US2155455A (en) * 1932-11-24 1939-04-25 Thoma Hans Hydraulic motor and pump

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925148A (en) * 1906-07-20 1909-06-15 Waterbury Tool Co Variable-speed gear.
US1263180A (en) * 1909-04-14 1918-04-16 Waterbury Tool Co Variable-speed gear.
US1137283A (en) * 1910-07-26 1915-04-27 Universal Speed Control Company Rotary-piston power transmission.
US1624363A (en) * 1923-10-08 1927-04-12 Rey Augustin Pump
US1924629A (en) * 1929-11-13 1933-08-29 Thoma Hans Hydraulic pump and motor
US1822064A (en) * 1930-06-23 1931-09-08 Clarence S Sorensen Compressor
US2155455A (en) * 1932-11-24 1939-04-25 Thoma Hans Hydraulic motor and pump
US2069651A (en) * 1935-02-18 1937-02-02 Oilgear Co Pump or motor
US2140633A (en) * 1936-03-17 1938-12-20 Kocks Fritz Means for driving tube drawing benches
US2146133A (en) * 1936-06-01 1939-02-07 Waterbury Tool Co Power transmission

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2655616A (en) * 1944-05-24 1953-10-13 English Electric Valve Co Ltd Magnetron
US2608158A (en) * 1945-06-08 1952-08-26 Hulman Pump
US2967491A (en) * 1953-01-24 1961-01-10 Wiggermann Georg Rotary piston pumps
US2834297A (en) * 1953-02-12 1958-05-13 Vickers Inc Power transmission
US2921536A (en) * 1955-09-26 1960-01-19 Richard T Cornelius Multiple cylinder pump
US3092034A (en) * 1959-02-18 1963-06-04 Kamper Motoren G M B H Axial piston engines
US5094146A (en) * 1988-01-04 1992-03-10 Hans Molly Axial piston type motor
DE102012004303A1 (de) 2012-03-01 2013-09-05 Robert Bosch Gmbh Hydrostatischer Axialkolbenmotor

Also Published As

Publication number Publication date
SE98337C1 (sv) 1940-03-12
DE882932C (de) 1953-07-13

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