GB537293A - Improvements in change-speed gearing - Google Patents

Improvements in change-speed gearing

Info

Publication number
GB537293A
GB537293A GB30074/39A GB3007439A GB537293A GB 537293 A GB537293 A GB 537293A GB 30074/39 A GB30074/39 A GB 30074/39A GB 3007439 A GB3007439 A GB 3007439A GB 537293 A GB537293 A GB 537293A
Authority
GB
United Kingdom
Prior art keywords
gear
sun
clutch
casing
sleeve
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
GB30074/39A
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.)
Bristol Aeroplane Co Ltd
Original Assignee
Bristol Aeroplane Co 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 Bristol Aeroplane Co Ltd filed Critical Bristol Aeroplane Co Ltd
Priority to GB30074/39A priority Critical patent/GB537293A/en
Publication of GB537293A publication Critical patent/GB537293A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46—Gearings having only two central gears, connected by orbital gears
    • F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
    • F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
    • F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0293—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 characterised by the signals used the signals being purely mechanical
    • F16H61/0295—Automatic gear shift control, e.g. initiating shift by centrifugal forces
    • 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
    • F16H2718/00—Mechanisms for speed-change of planetary gearing, the speed change control being dependent on function parameters of the gearing
    • F16H2718/08—Control dependent on speed
    • F16H2718/10—Control dependent on speed only the toothed wheels remain engaged
    • F16H2718/12—Control dependent on speed only the toothed wheels remain engaged the control being mechanical

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

537,293. Variable-speed gearing. BRISTOL AEROPLANE CO. Ltd., and OWNER, F. M. Nov. 14, 1939, No. 30074. [Class 80 (ii)] In an epicyclic variable-speed gear in which the planet carrier is the driving member and the annulus the driven member, the sun wheel may be locked against rotation to produce a high gear or clutched by centrifugal means to the planet carrier so that the gear is solid to produce a low gear. As shown the planet wheels 15 are mounted in a carrier 13 having a gear 11 driven from a gear 10. The sun 16 is formed on a sleeve 17 and is splined to a sleeve 25 carrying clutch plates 26 spaced by a plate 27 splined to a fixed casing 28. The latter carries a piston 29 upon which may act hydraulic pressure admitted into the casing 28 through a port 31 to engage the clutch and hold the sun 16 stationary. A casing 19 mounted on bearings 20, 21, has an internal gear 18 engaging the planets and an internal gear 22 egaging a gear 23 on a driven shaft. The planet carrier 13 has a grooved ring 35 forming the outer member of a centrifugal clutch, the inner members of which are constituted by masses 36 yieldingly secured to the sleeve .17. In operation and when the clutch 26, 27 is engaged a high speed is obtained by the planets planetating round the fixed sun 16 and so driving the casing 19. If the clutch 26, 27 is disengaged the sun 16 will commence to rotate, the masses 36 are thus moved outwardly to engage the ring 35 and the whole of the epicyclic gear becomes solid to produce a low gear. A number of such epicyclic trains may be arranged around a central gear 23 which may be on the shaft of a super-charger of an internal combustion engine.
GB30074/39A 1939-11-14 1939-11-14 Improvements in change-speed gearing Expired GB537293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30074/39A GB537293A (en) 1939-11-14 1939-11-14 Improvements in change-speed gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30074/39A GB537293A (en) 1939-11-14 1939-11-14 Improvements in change-speed gearing

Publications (1)

Publication Number Publication Date
GB537293A true GB537293A (en) 1941-06-17

Family

ID=10301855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30074/39A Expired GB537293A (en) 1939-11-14 1939-11-14 Improvements in change-speed gearing

Country Status (1)

Country Link
GB (1) GB537293A (en)

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