GB348984A - Improvements in variable-speed gearing for bicycles - Google Patents
Improvements in variable-speed gearing for bicyclesInfo
- Publication number
- GB348984A GB348984A GB2696630A GB2696630A GB348984A GB 348984 A GB348984 A GB 348984A GB 2696630 A GB2696630 A GB 2696630A GB 2696630 A GB2696630 A GB 2696630A GB 348984 A GB348984 A GB 348984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chain
- pinions
- pinion
- bicycles
- 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
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
-
- 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)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
348,984. Cycle driving-transmissions. BOEUF, M. and RUDELLI, C., 6, Avenue du Prado, Marseilles, France. Sept. 9, 1930, No. 26966. [Class 136 (ii).] Variable-speed gearing for bicycles, of the type in which the driving-chain is moved laterally to engage sprocket pinions of different sizes, comprises two chain guiding and tensioning pinions 8, 9 mounted between two plates 6, 7, which prevent the chain from leaving the pinions. The plate 6 is provided with a tube 5 telescoping into a tube 2, which is fixed, as by nuts 3, to a support 1 on the cycle frame, the chain being shifted bylateral movement of the plates 6, 7 and pinions 8, 9, which is effected in one direction by means of a Bowden wire 11 &c. connected to a hand-lever, and in the other direction by a spring 10. The tension of the chain is maintained by means of a tension spring 13 acting on the pinion carrier 6, 7. In the event of the chain becoming clogged with mud, undue oscillation of the pinion-carrier 6, 7 may be prevented by engaging a projection 14 with a slot 15 in the support 1. The lower pinion 9 may have truncated teeth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2696630A GB348984A (en) | 1930-09-09 | 1930-09-09 | Improvements in variable-speed gearing for bicycles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2696630A GB348984A (en) | 1930-09-09 | 1930-09-09 | Improvements in variable-speed gearing for bicycles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB348984A true GB348984A (en) | 1931-05-21 |
Family
ID=10251990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2696630A Expired GB348984A (en) | 1930-09-09 | 1930-09-09 | Improvements in variable-speed gearing for bicycles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB348984A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4895553A (en) * | 1987-01-28 | 1990-01-23 | Shimano Industrial Company Limited | Derailleur for a bicycle |
-
1930
- 1930-09-09 GB GB2696630A patent/GB348984A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4895553A (en) * | 1987-01-28 | 1990-01-23 | Shimano Industrial Company Limited | Derailleur for a bicycle |
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