GB625124A - Improvements in and relating to variable speed chain drives - Google Patents

Improvements in and relating to variable speed chain drives

Info

Publication number
GB625124A
GB625124A GB25684/46A GB2568446A GB625124A GB 625124 A GB625124 A GB 625124A GB 25684/46 A GB25684/46 A GB 25684/46A GB 2568446 A GB2568446 A GB 2568446A GB 625124 A GB625124 A GB 625124A
Authority
GB
United Kingdom
Prior art keywords
sprockets
chain
support
spindles
rotation
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
GB25684/46A
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 GB625124A publication Critical patent/GB625124A/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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/24—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using chains or toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

625,124. Expanding wheel gearing. STEINER, M. Aug. 27, 1946, No. 25684. Convention date, Sept. 17, 1943. [Class 80 (ii)] An expanding chain wheel for a variable speed chain gear comprises a number of sprockets 5 mounted on a support 6 so as to be movable radially along guides 8, each sprocket being mounted so that its rotation in the direction of drive of the chain 3 is prevented. In the embodiment shown in Fig. 2, the spindles 12 of the sprockets are moved radially by rotation of a support 18 having non-radial slots 17 co-operating with the spindles 12, and the sprockets 5 are engageable with the spindles 12 through freewheels 14, the angular locking positions of which correspond to a multiple of the chain pitch. In a second embodiment, the invention is applied to the chain wheel of a bicycle in which case the support 18 is rotated by a pin and helical slot mechanism within the bottom bracket. In this embodiment the sprockets are rigid with pinions engaging racks on the support 6, so that the sprockets are held' in both directions of rotation, but rotate the correct amount to compensate for chain pitch whcn moved radially, the pinions being of different sizes to rotate the sprockets through different multiples of the chain pitch.
GB25684/46A 1943-09-17 1946-08-27 Improvements in and relating to variable speed chain drives Expired GB625124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR625124X 1943-09-17

Publications (1)

Publication Number Publication Date
GB625124A true GB625124A (en) 1949-06-22

Family

ID=8987499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25684/46A Expired GB625124A (en) 1943-09-17 1946-08-27 Improvements in and relating to variable speed chain drives

Country Status (1)

Country Link
GB (1) GB625124A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850044A (en) * 1973-05-10 1974-11-26 D Hagen Bicycle transmission
FR2476256A1 (en) * 1979-10-29 1981-08-21 Deal Michel Variable diameter transmission wheel - has toothed segments engaging chain with radial positions altered by sliding in grooves
CN103363046A (en) * 2013-02-25 2013-10-23 董栋 Continuous speed changer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850044A (en) * 1973-05-10 1974-11-26 D Hagen Bicycle transmission
FR2476256A1 (en) * 1979-10-29 1981-08-21 Deal Michel Variable diameter transmission wheel - has toothed segments engaging chain with radial positions altered by sliding in grooves
CN103363046A (en) * 2013-02-25 2013-10-23 董栋 Continuous speed changer
WO2014127660A1 (en) * 2013-02-25 2014-08-28 Dong Dong Continuous speed changer
CN103363046B (en) * 2013-02-25 2016-09-14 董栋 Continuously variable transmission

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