GB791008A - Improved actuating means for the selecting mechanism of variable-speed gearboxes - Google Patents

Improved actuating means for the selecting mechanism of variable-speed gearboxes

Info

Publication number
GB791008A
GB791008A GB1801055A GB1801055A GB791008A GB 791008 A GB791008 A GB 791008A GB 1801055 A GB1801055 A GB 1801055A GB 1801055 A GB1801055 A GB 1801055A GB 791008 A GB791008 A GB 791008A
Authority
GB
United Kingdom
Prior art keywords
collar
change
gear
conduits
enlargement
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
GB1801055A
Inventor
Arthur Sykes
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.)
David Brown and Sons Huddersfield Ltd
Original Assignee
David Brown and Sons Huddersfield 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 David Brown and Sons Huddersfield Ltd filed Critical David Brown and Sons Huddersfield Ltd
Priority to GB1801055A priority Critical patent/GB791008A/en
Publication of GB791008A publication Critical patent/GB791008A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Actuator (AREA)

Abstract

791,008. Change-speed control. BROWN & SONS (HUDDERSFIELD), Ltd., D. Sept. 24, 1956 [June 22, 1955], No. 18010/55. Class 80 (2). A change-speed gear selector rod a, moved axially one way or the other to a gear engaged position and having an intermediate neutral position, is formed with an enlarged portion b and carries slidably a collar e, the various parts lying in different diameter cylinders c, f, g to which hydraulic or pneumatic pressure fluid is supplied through conduits h, j, k. The end area of the collar e subjected to pressure in the bore f is greater than the end area of the enlargement b subjected to pressure in the bore c. When pressure fluid is applied simultaneously through the conduits j, h to the bores f, c, the collar e is moved to its extreme right-hand position in the Figure and simultaneously the rod a and enlargement b are moved leftwards until the enlargement engages the collar. Thus a positively located intermediate neutral position of the selector rod a is obtained. Leftwards or rightwards movement of the selector rod to establish a selected ratio is obtained by admitting pressure fluid through one only of the conduits h, k to the bores c, g. One or more selector rods according to the invention may be applied to a change-speed gear having the selection and establishment of the different ratios controlled by a gear shift lever arranged to make an are or a complete circle of step-by-step movements. In a change-speed gear having more than one selector rod, suitable interlocking means are provided to prevent two gear ratios being simultaneously engaged.
GB1801055A 1955-06-22 1955-06-22 Improved actuating means for the selecting mechanism of variable-speed gearboxes Expired GB791008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1801055A GB791008A (en) 1955-06-22 1955-06-22 Improved actuating means for the selecting mechanism of variable-speed gearboxes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1801055A GB791008A (en) 1955-06-22 1955-06-22 Improved actuating means for the selecting mechanism of variable-speed gearboxes

Publications (1)

Publication Number Publication Date
GB791008A true GB791008A (en) 1958-02-19

Family

ID=10105086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1801055A Expired GB791008A (en) 1955-06-22 1955-06-22 Improved actuating means for the selecting mechanism of variable-speed gearboxes

Country Status (1)

Country Link
GB (1) GB791008A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213757A1 (en) * 1981-04-16 1983-01-20 Autóipari Kutató Intézet, Budapest Pneumatic piston shift drive, especially for vehicle gearboxes
US4889217A (en) * 1986-09-24 1989-12-26 Ab Volvo Motor vehicle clutch for a mechanical, multiple-speed automatic transmission
DE3837777A1 (en) * 1988-11-08 1990-05-10 Kloeckner Humboldt Deutz Ag HYDRAULIC GEARBOX

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213757A1 (en) * 1981-04-16 1983-01-20 Autóipari Kutató Intézet, Budapest Pneumatic piston shift drive, especially for vehicle gearboxes
US4889217A (en) * 1986-09-24 1989-12-26 Ab Volvo Motor vehicle clutch for a mechanical, multiple-speed automatic transmission
DE3837777A1 (en) * 1988-11-08 1990-05-10 Kloeckner Humboldt Deutz Ag HYDRAULIC GEARBOX

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