GB694873A - Improvements in hydraulic power hoists, particularly for agricultural machines - Google Patents

Improvements in hydraulic power hoists, particularly for agricultural machines

Info

Publication number
GB694873A
GB694873A GB25178/50A GB2517850A GB694873A GB 694873 A GB694873 A GB 694873A GB 25178/50 A GB25178/50 A GB 25178/50A GB 2517850 A GB2517850 A GB 2517850A GB 694873 A GB694873 A GB 694873A
Authority
GB
United Kingdom
Prior art keywords
jack
valve
teves
slot
pin
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
GB25178/50A
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.)
HEINZ TEVES
Continental Teves AG and Co oHG
Original Assignee
HEINZ TEVES
Alfred Teves GmbH
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 HEINZ TEVES, Alfred Teves GmbH filed Critical HEINZ TEVES
Publication of GB694873A publication Critical patent/GB694873A/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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Hydraulic Motors (AREA)

Abstract

694,873. Fluid-pressure servomotor-control systems. TEVES, A., TEVES, H., and TEVES, E. A., [trading as TEVES, MACHINENUND ARMATURENFABR1K KOMMANDIT-GES., A.]. Oct 16, 1950 [June 17, 1949], No. 25178/50. Class 135 A hydraulic jack, suitable for actuating the working tool of an agricultural machine, is controlled by a valve 11 which carries a pin 23 riding in a slot 24 in a sleeve 25 rotatable around the valve and connected to the piston of the jack by means of a forked lever 26, &c. When the manual control lever 22 is actuated, the valve will be given a longitudinal movement due to the co-operation of the pin 23 and the slot 24, the sleeve being held stationary at that moment by the jack piston. Pressure liquid is supplied by an engine-driven pump and will flow in at port 7 to one of the ports 16, 19 which lead to the two sides of the jack, and the liquid exhausting from the jack will flow in at the appropriate port 16 or 19 and out through port 13. The resulting movement of the jack will rotate sleeve 25 and, once again due to the co-operation of pin 23 and slot 24, the valve will be moved longitudinally towards the neutral position. Owing to the overlap on the lands of the valves, flow to the jack will cease and the latter will stop moving before the valve has been fully recentred, and the final recentering movement is given by a leaf spring 27 secured to the valve.
GB25178/50A 1949-06-17 1950-10-16 Improvements in hydraulic power hoists, particularly for agricultural machines Expired GB694873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE694873X 1949-06-17

Publications (1)

Publication Number Publication Date
GB694873A true GB694873A (en) 1953-07-29

Family

ID=6607124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25178/50A Expired GB694873A (en) 1949-06-17 1950-10-16 Improvements in hydraulic power hoists, particularly for agricultural machines

Country Status (1)

Country Link
GB (1) GB694873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2521367A1 (en) * 1975-05-14 1976-11-25 Teves Gmbh Alfred Hydraulic system for load suppy - has switch valve in supply line from pump to load with orifice plate between pump and valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2521367A1 (en) * 1975-05-14 1976-11-25 Teves Gmbh Alfred Hydraulic system for load suppy - has switch valve in supply line from pump to load with orifice plate between pump and valve

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