GB192540A - Improvements in or relating to variable speed hydraulic transmission mechanism - Google Patents

Improvements in or relating to variable speed hydraulic transmission mechanism

Info

Publication number
GB192540A
GB192540A GB32142/21A GB3214221A GB192540A GB 192540 A GB192540 A GB 192540A GB 32142/21 A GB32142/21 A GB 32142/21A GB 3214221 A GB3214221 A GB 3214221A GB 192540 A GB192540 A GB 192540A
Authority
GB
United Kingdom
Prior art keywords
lever
servomotor
pistonrod
stroke
pump
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
GB32142/21A
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.)
Vickers Ltd
Original Assignee
Vickers Ltd
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 Vickers Ltd filed Critical Vickers Ltd
Priority to GB32142/21A priority Critical patent/GB192540A/en
Priority to FR559056D priority patent/FR559056A/en
Publication of GB192540A publication Critical patent/GB192540A/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
    • F15B13/16—Special measures for feedback, e.g. by a follow-up device
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/472—Automatic regulation in accordance with output requirements for achieving a target output torque

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

192,540. Vickers, Ltd., and Sinclair, H. Nov. 30, 1921. Speed - varying mechanism; liquid - pressure engines.-In variable-speed transmission gears of the kind comprising pump and motor units and means for varying the stroke of the pump and/or motor unit, the stroke-controlling member D, Figs. 1 and 2, is operated by an hydraulic servomotor A<x>, controlled bv a member A<1> which is under the joint control of a hand-lever B and an automatic device C operated by the pressure in the system, the member A<1> being returned to its neutral position by hunting gear. Means are also provided for limiting the rate of retardation when the control-lever is moved back towards neutral. The member A' is connected to a floating link E, connected at one end to the device C and at the other to a floating link E', one end of which is connected through links e<3>, e<4> and a lever e<5> to the lever B, while the other is connected by a link e<1> and bell-crank e<2> to the pistonrod of the servomotor. The exhaust from the servomotor cylinder may be throttled, and a bypass valve a<x> serves to by-pass the liquid when the member D is at or near its neutral position. In a modification, an electric servomotor of the Deri single-phase type is employed. The device for limiting the rate of retardation comprises a plate F<1> with stop-members f<1> adapted to cooperate with the lever e<5>, the plate being carried by a cam F engaged by a roller e<x> on the pistonrod of the servomotor.
GB32142/21A 1921-11-30 1921-11-30 Improvements in or relating to variable speed hydraulic transmission mechanism Expired GB192540A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB32142/21A GB192540A (en) 1921-11-30 1921-11-30 Improvements in or relating to variable speed hydraulic transmission mechanism
FR559056D FR559056A (en) 1921-11-30 1922-11-23 Improvements to variable speed hydraulic transmission mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32142/21A GB192540A (en) 1921-11-30 1921-11-30 Improvements in or relating to variable speed hydraulic transmission mechanism

Publications (1)

Publication Number Publication Date
GB192540A true GB192540A (en) 1923-02-08

Family

ID=10333934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32142/21A Expired GB192540A (en) 1921-11-30 1921-11-30 Improvements in or relating to variable speed hydraulic transmission mechanism

Country Status (2)

Country Link
FR (1) FR559056A (en)
GB (1) GB192540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478068A (en) * 1942-08-24 1949-08-02 Daisy T Wallace Operating means for movable members of airplanes or other apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478068A (en) * 1942-08-24 1949-08-02 Daisy T Wallace Operating means for movable members of airplanes or other apparatus

Also Published As

Publication number Publication date
FR559056A (en) 1923-09-08

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