GB408915A - Improved change speed gear device for bicycles - Google Patents
Improved change speed gear device for bicyclesInfo
- Publication number
- GB408915A GB408915A GB35466/33A GB3546633A GB408915A GB 408915 A GB408915 A GB 408915A GB 35466/33 A GB35466/33 A GB 35466/33A GB 3546633 A GB3546633 A GB 3546633A GB 408915 A GB408915 A GB 408915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sprocket
- chain
- slide
- bicycles
- dec
- 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)
- Transmissions By Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
408,915. Change-speed chain gearing. PERONA, G., CiriÚ, Turin, Italy. Dec. 16, 1933, No. 35466. Convention date, Dec. 17, 1932. [Class 80 (ii).] In variable-speed driving - mechanism for bicycles, of the type in which the chain is adapted to be selectively engaged by means of a movable sprocket with one of two or more sprockets of different diameters on the driven wheel, the movable sprocket is carried by a slide engaging a guide surface which is fixed to the cycle frame and is inclined with respect to the plane of the driven wheel in such a way as to move the sprocket laterally into the plane of the transmission sprocket to be engaged by the chain. The movable sprocket d is adjustably mounted by means of an arm r, a bolt f, and nuts g, h on a two-part slide e, which is moved by means of a cable n along a slotted guide plate a secured by means of a clamp b to the chain stay 5 and inclined as shown to effect the lateral movements of the sprocket. The slotted guide plate a is also inclined in a fore-and-aft direction, in order to vary simultaneously the distance of the sprocket d from the wheel axis and thereby facilitate engagement of the chain with a sprocket of different diameter. The chain is tensioned by means of a pulley j adjustably mounted on an arm i, which is pivoted to the slide e at m and is acted upon by a spiral spring l.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT408915X | 1932-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB408915A true GB408915A (en) | 1934-04-19 |
Family
ID=11249951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35466/33A Expired GB408915A (en) | 1932-12-17 | 1933-12-16 | Improved change speed gear device for bicycles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB408915A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4198873A (en) * | 1977-07-01 | 1980-04-22 | Shimano Industrial Company Limited | Speed changing device for a bicycle and the like |
EP1714864A2 (en) | 2005-04-20 | 2006-10-25 | Shimano Inc. | Chain tension applying device |
-
1933
- 1933-12-16 GB GB35466/33A patent/GB408915A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4198873A (en) * | 1977-07-01 | 1980-04-22 | Shimano Industrial Company Limited | Speed changing device for a bicycle and the like |
EP1714864A2 (en) | 2005-04-20 | 2006-10-25 | Shimano Inc. | Chain tension applying device |
EP1714864A3 (en) * | 2005-04-20 | 2008-09-10 | Shimano Inc. | Chain tension applying device |
US7955205B2 (en) | 2005-04-20 | 2011-06-07 | Shimano Inc. | Chain tension applying device |
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