GB638734A - Improvements in and relating to variable speed friction gearings - Google Patents

Improvements in and relating to variable speed friction gearings

Info

Publication number
GB638734A
GB638734A GB10903/48A GB1090348A GB638734A GB 638734 A GB638734 A GB 638734A GB 10903/48 A GB10903/48 A GB 10903/48A GB 1090348 A GB1090348 A GB 1090348A GB 638734 A GB638734 A GB 638734A
Authority
GB
United Kingdom
Prior art keywords
shaft
gear
disc
pivoted
variable
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
GB10903/48A
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.)
Brevets Aero Mecaniques SA
Original Assignee
Brevets Aero Mecaniques SA
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 Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
Publication of GB638734A publication Critical patent/GB638734A/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
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)
  • Friction Gearing (AREA)
  • Transmission Devices (AREA)

Abstract

638,734. Variable-speed gearing. BREVETS AERO-MECANIQUES SOC. ANON. April 20, 1948, No. 10903. Convention date, May 8, 1947. [Class 80 (ii)] A variable-speed drive from an input shaft 2 to the revolving platform 1 of an anti-aircraft gun or other automatic firearm comprises one or more (as shown, three) driven rollers 6 mounted on an output shaft 8 and engaging driving toric races on discs 3, 4 oppositely rotated at equal speeds from the shaft 2, a gear 10 on which directly engages an axially spring-biased gear 12 driving the disc 3 via camming balls 13 and powers the disc 4 via an idler train 15, 17 and a gear 18 formed on the disc. The shaft 8 transmits the drive to the platform 1 through a gear pair 19, 20 and a planet 21 meshing a stationary reaction sun 22. Each roller 6 is slidably and rotatably mounted on a spindle 23 pivoted between arms 7a on the shaft 8 which is axially slidable under the control of a fork 25 to tilt the rollers one way or the other from the central neutral position shown to give forward or reverse drive respectively. Instead of being centrally pivoted, the roller spindles may be pivoted to a peripheral support rigid with the output shaft.
GB10903/48A 1947-05-08 1948-04-20 Improvements in and relating to variable speed friction gearings Expired GB638734A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU638734X 1947-05-08

Publications (1)

Publication Number Publication Date
GB638734A true GB638734A (en) 1950-06-14

Family

ID=19732993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10903/48A Expired GB638734A (en) 1947-05-08 1948-04-20 Improvements in and relating to variable speed friction gearings

Country Status (1)

Country Link
GB (1) GB638734A (en)

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