GB298327A - Improvements in or relating to change speed mechanism - Google Patents

Improvements in or relating to change speed mechanism

Info

Publication number
GB298327A
GB298327A GB2171227A GB2171227A GB298327A GB 298327 A GB298327 A GB 298327A GB 2171227 A GB2171227 A GB 2171227A GB 2171227 A GB2171227 A GB 2171227A GB 298327 A GB298327 A GB 298327A
Authority
GB
United Kingdom
Prior art keywords
piston
shaft
gear
effected
driven
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
GB2171227A
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 GB2171227A priority Critical patent/GB298327A/en
Publication of GB298327A publication Critical patent/GB298327A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/02Control 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 characterised by the signals used
    • F16H61/0262Control 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 characterised by the signals used the signals being hydraulic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2710/00Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing
    • F16H2710/04Control dependent on speed
    • F16H2710/06Control dependent on speed only the toothed wheels remain engaged
    • F16H2710/10Control dependent on speed only the toothed wheels remain engaged the control being hydraulic or pneumatic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

298,327. McGill, H. Aug. 17, 1927. variable-speed gearing is controlled automatically by the movement of a piston 27, Fig. 2, effected by a pump 30 driven from the driven shaft 9. A lay shaft 6 is constantly driven from driving-shaft 4 and carries gear 12, 14. Direct drive and two reduced speeds are effected by the selective clutching to shaft 9 of rings 17, 13, 15. Each clutch has radial spring-returned plungers 20, Fig. 6, which engage recesses 21, Fig. 2, in the rings. The operation is effected by the axial sliding of cam bars 23 which are coupled to the piston 27, which in this form, surrounds shaft 9. A spring 34 constantly thrusts the piston towards the lowest-gear position, and disconnection of drive is effected by sliding the gear 14 out of mesh. The pump 30 thrusts preferably oil through a pipe into annular chamber behind piston 27 so a.s to displace the piston. There are escape ports 38, 39 the effect of which is that the gear-controlling displacements of piston 27 are the proper function of the speed of the driven shaft 9. A bye-pass may be provided to enable, say, a vehicle to descend hills in low gear.
GB2171227A 1927-08-17 1927-08-17 Improvements in or relating to change speed mechanism Expired GB298327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2171227A GB298327A (en) 1927-08-17 1927-08-17 Improvements in or relating to change speed mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2171227A GB298327A (en) 1927-08-17 1927-08-17 Improvements in or relating to change speed mechanism

Publications (1)

Publication Number Publication Date
GB298327A true GB298327A (en) 1928-10-11

Family

ID=10167557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2171227A Expired GB298327A (en) 1927-08-17 1927-08-17 Improvements in or relating to change speed mechanism

Country Status (1)

Country Link
GB (1) GB298327A (en)

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