GB589349A - Control valve for hydraulic systems - Google Patents

Control valve for hydraulic systems

Info

Publication number
GB589349A
GB589349A GB1969744A GB1969744A GB589349A GB 589349 A GB589349 A GB 589349A GB 1969744 A GB1969744 A GB 1969744A GB 1969744 A GB1969744 A GB 1969744A GB 589349 A GB589349 A GB 589349A
Authority
GB
United Kingdom
Prior art keywords
plunger
neutral position
port sets
passages
bore
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
Application number
GB1969744A
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 GB1969744A priority Critical patent/GB589349A/en
Publication of GB589349A publication Critical patent/GB589349A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve Housings (AREA)

Abstract

589,349. Multiple - way valves. STEPHENS, W. T. Oct. 12, 1944, No. 19697. [Class 135] A control valve for a hydraulic hoist &c., comprises a housing having a valve bore 24, a high pressure inlet passage 41, low pressure passages 43, 17, 16, said passages intersecting the bore, a pair of motor ports 32, 34, a valve plunger 26 slidable in the bore by the operating eye 30 in each direction, against the spring 54, from a neutral position and having a reduced diameter portion 451 of a length to connect the passages 41 and 43 when the plunger is in the neutral position, said plunger having two spaced longitudinal bores 47, 67, each connecting a pair of port sets 66, 62, and 491, 72 spaced apart a distance substantially equal to the distance between the high pressure passage 41 and each motor port, a check valve 48, 63, in each bore for controlling one of the port sets, the latter port sets being out of register with the motor ports and the low pressure passages 16, 17 when the plunger is in its neutral position but arranged to communicate with the motor ports for raising or the low pressure passages for lowering the hoist &c., by movement of the plunger from its neutral position, one of the other port sets, 66, registering with the low pressure passage 43 in the neutral position and being located at the junction of the main and reduced diameters of the valve plunger. The double acting plunger 26 may be replaced by or, as shown, work in conjunction with a single acting plunger 27, the inner ends of both plungers being identical. The maximum overlap of the ports 72, which are helically arranged, with the ports 32 and, therefore, the maximum rate of lowering of the hoist, may be adjusted by a screw stop, 75. In a modification an auxiliary lowering port of smaller cross-sectional area than either of the port sets 72, 49' may be formed in the plunger between the said port sets to give a predetermined limited rate of lowering of the hoist. Specification 576,309 is referred to.
GB1969744A 1944-10-12 1944-10-12 Control valve for hydraulic systems Expired GB589349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1969744A GB589349A (en) 1944-10-12 1944-10-12 Control valve for hydraulic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1969744A GB589349A (en) 1944-10-12 1944-10-12 Control valve for hydraulic systems

Publications (1)

Publication Number Publication Date
GB589349A true GB589349A (en) 1947-06-18

Family

ID=10133695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1969744A Expired GB589349A (en) 1944-10-12 1944-10-12 Control valve for hydraulic systems

Country Status (1)

Country Link
GB (1) GB589349A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107037B (en) * 1957-08-16 1961-05-18 Plessey Co Ltd Tax arrangement
DE1128239B (en) * 1958-09-17 1962-04-19 New York Air Brake Internation Control slide for double-acting pressure medium operated motors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107037B (en) * 1957-08-16 1961-05-18 Plessey Co Ltd Tax arrangement
DE1128239B (en) * 1958-09-17 1962-04-19 New York Air Brake Internation Control slide for double-acting pressure medium operated motors

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