GB1022185A - Control spool for a draft/position control hydraulic system - Google Patents

Control spool for a draft/position control hydraulic system

Info

Publication number
GB1022185A
GB1022185A GB2929163A GB2929163A GB1022185A GB 1022185 A GB1022185 A GB 1022185A GB 2929163 A GB2929163 A GB 2929163A GB 2929163 A GB2929163 A GB 2929163A GB 1022185 A GB1022185 A GB 1022185A
Authority
GB
United Kingdom
Prior art keywords
spool
rod
bores
valve
draft
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
GB2929163A
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of GB1022185A publication Critical patent/GB1022185A/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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/1117—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a hitch position sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1,022,185. Valves. INTERNATIONAL HARVESTER CO. July 24, 1963 [July 26, 1962], No. 29291/63. Heading F2V. [Also in Division G3] A spool valve is actuated by an adjustable member (not shown) which contacts the end of a rod 49 connected to the valve spool through a pin-and-slot 52, 51 to provide lost-motion connection. The rod forms a chamber 53 with the spool which is connected to a fluid line through a throttle 54. Radial bores 59 lead from the chamber and these bores are closed by the rod 49 when the left-hand end of the slot 51 engages the pin 52. The spool is urged to the left by a spring (not shown) so that when the valve moves to the left, and the bores 59 are opened by a control edge 55, the spool moves to the left rapidly relative to the rod to take up the lost motion.
GB2929163A 1962-07-26 1963-07-24 Control spool for a draft/position control hydraulic system Expired GB1022185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ22155A DE1176946B (en) 1962-07-26 1962-07-26 Control slide for control hydraulics, especially for agricultural tractors

Publications (1)

Publication Number Publication Date
GB1022185A true GB1022185A (en) 1966-03-09

Family

ID=7200839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2929163A Expired GB1022185A (en) 1962-07-26 1963-07-24 Control spool for a draft/position control hydraulic system

Country Status (2)

Country Link
DE (1) DE1176946B (en)
GB (1) GB1022185A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945011A1 (en) * 1979-11-08 1981-05-21 Robert Bosch Gmbh, 7000 Stuttgart CONTROL UNIT FOR A HYDRAULIC WORKING CIRCUIT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE802298C (en) * 1948-10-09 1951-02-08 Elektro Mechanik G M B H Hydraulic slide control with pilot control
DE1116954B (en) * 1959-02-26 1961-11-09 Rheinstahl Hanomag Ag Control slide for a single acting servomotor, especially for power lift systems on farm tractors

Also Published As

Publication number Publication date
DE1176946B (en) 1964-08-27

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