GB843047A - Automatic variable speed drive - Google Patents

Automatic variable speed drive

Info

Publication number
GB843047A
GB843047A GB9158/58A GB915858A GB843047A GB 843047 A GB843047 A GB 843047A GB 9158/58 A GB9158/58 A GB 9158/58A GB 915858 A GB915858 A GB 915858A GB 843047 A GB843047 A GB 843047A
Authority
GB
United Kingdom
Prior art keywords
spring
pulley
engine
sprocket
flange
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
GB9158/58A
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
Publication of GB843047A publication Critical patent/GB843047A/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
    • 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
    • F16H61/66—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 specially adapted for continuously variable gearings
    • F16H61/662—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 specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66231—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 specially adapted for continuously variable gearings with endless flexible members controlling shifting exclusively as a function of speed
    • F16H61/6624—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 specially adapted for continuously variable gearings with endless flexible members controlling shifting exclusively as a function of speed using only hydraulical and mechanical sensing or control means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

843,047. Change-speed control. UHER, E. March 21, 1958 [March 27, 1957]; No. 9158/58. Class 80 (2). An engine-driven pump discharging through a fixed orifice in a closed circuit determines the pressure, balanced against a pulley spring, to provide speed-responsive ratio shift in an expanding pulley gear. An engine 3 drives a pump 1 drawing fluid from a tank 5 and returning the fluid through an orifice 7 to provide speed proportionate pressure in a pipe 8 leading to the bore 9 of a shaft 10 carrying an expanding pulley 12, 14 and a sprocket 18. The sprocket 18 drives a vehicle 22 wheel by chain 19 and sprocket 20. The movable flange 12 of the pulley 12, 14 is urged towards the fixed flange 14 by a spring 23 whose action is opposed by the fluid pressure on a piston 11 connected to the flange 12 by a pin 13. The pulley 26, 27 is driven from the engine 3 through a speedresponsive centrifugal clutch 33 and has its movable flange 27 urged by a spring 31 of less strength than the spring 23. A V-belt 25 connects the two pulleys. In a modification an adjustable by-pass is provided across the fixed orifice to vary the speed-responsive characteristics and a spring- loaded relief valve is connected across the pump. The adjustable valve may comprise a needle valve having a predetermined minimum flow, retraction of the needle by manual means providing increased flow, the needle valve thus providing the characteristics of both the fixed and adjustable orifices. The needle valve may be controlled in accordance with engine load or temperature.
GB9158/58A 1957-03-27 1958-03-21 Automatic variable speed drive Expired GB843047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT843047X 1957-03-27

Publications (1)

Publication Number Publication Date
GB843047A true GB843047A (en) 1960-08-04

Family

ID=3682072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9158/58A Expired GB843047A (en) 1957-03-27 1958-03-21 Automatic variable speed drive

Country Status (1)

Country Link
GB (1) GB843047A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411590A (en) * 1980-12-08 1983-10-25 Reliance Electric Company Control system for variable speed belt drives
GB2143601A (en) * 1983-07-18 1985-02-13 Piaggio & C Spa Variable-transmission-ratio mechanical drive with v-belt and expansible sheaves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411590A (en) * 1980-12-08 1983-10-25 Reliance Electric Company Control system for variable speed belt drives
GB2143601A (en) * 1983-07-18 1985-02-13 Piaggio & C Spa Variable-transmission-ratio mechanical drive with v-belt and expansible sheaves

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