GB819476A - Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like - Google Patents

Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like

Info

Publication number
GB819476A
GB819476A GB2240455A GB2240455A GB819476A GB 819476 A GB819476 A GB 819476A GB 2240455 A GB2240455 A GB 2240455A GB 2240455 A GB2240455 A GB 2240455A GB 819476 A GB819476 A GB 819476A
Authority
GB
United Kingdom
Prior art keywords
chain
tension
spring
control cable
gear
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
GB2240455A
Inventor
Albert Edward Harris
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.)
CYCLO GEAR Co Ltd
Original Assignee
CYCLO GEAR 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 CYCLO GEAR Co Ltd filed Critical CYCLO GEAR Co Ltd
Priority to GB2240455A priority Critical patent/GB819476A/en
Publication of GB819476A publication Critical patent/GB819476A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • B62M9/1248—Mechanisms for shifting laterally characterised by the use of biasing means, e.g. springs; Arrangements thereof
    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/127—Mounting or guiding of cables
    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • B62M2009/12413—Rear derailleur comprising telescoping mechanisms

Landscapes

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

Abstract

819,476. Change-speed chain gear. CYCLO GEAR CO. Ltd. Oct. 17, 1956 [Aug. 4, 1955], No. 22404/55. Class 80 (2). In a cycle change-speed gear of the kind in which the drive-chain 3 is shifted laterally on to differentsized hub sprockets 24 by a single control cable 12 which, through a chain 10, shifts a tension-sprocket carrier 1 mounted on a post 5 slidably and turnable in a pivoted bracket 7, in opposition to the compression of a coil spring 13, which spring is also stressed in torsion to tension the drive-chain, loss of tension in moving from larger to smaller hub sprockets is compensated by causing the control cable 12 to turn the anchored end 16 of the spring. For this purpose the cable 12 passes round a free pulley 19 and is secured thereto by a lug 22 which abuts a projection 23 on a free cup-ring 18 engaged by the inner end 16 of the spring 13, the outer end 15 of which engages a cup-ring 17 fast with the tension sprocket carrier 1. Thus as the control cable 12 shifts the drivechain 3 towards the smaller hub sprockets 24, it also winds up the spring 13 to maintain chain tension.
GB2240455A 1955-08-04 1955-08-04 Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like Expired GB819476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2240455A GB819476A (en) 1955-08-04 1955-08-04 Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2240455A GB819476A (en) 1955-08-04 1955-08-04 Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like

Publications (1)

Publication Number Publication Date
GB819476A true GB819476A (en) 1959-09-02

Family

ID=10178818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2240455A Expired GB819476A (en) 1955-08-04 1955-08-04 Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like

Country Status (1)

Country Link
GB (1) GB819476A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130252A1 (en) * 2013-02-22 2014-08-23 Campagnolo Srl CHANGE OF BICYCLE WITH IMPROVED COMMAND PRECISION

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130252A1 (en) * 2013-02-22 2014-08-23 Campagnolo Srl CHANGE OF BICYCLE WITH IMPROVED COMMAND PRECISION
EP2769908A1 (en) * 2013-02-22 2014-08-27 Campagnolo S.R.L. Bicycle gearshift with improved precision control
JP2014162477A (en) * 2013-02-22 2014-09-08 Campagnolo Spa Gear shift device for bicycle which is controlled by improved precision control
US9637199B2 (en) 2013-02-22 2017-05-02 Campagnolo S.R.L. Bicycle gearshift with improved precision control

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