GB411360A - Improvements in or relating to change speed devices for cycles or similar vehicles - Google Patents
Improvements in or relating to change speed devices for cycles or similar vehiclesInfo
- Publication number
- GB411360A GB411360A GB29758/33A GB2975833A GB411360A GB 411360 A GB411360 A GB 411360A GB 29758/33 A GB29758/33 A GB 29758/33A GB 2975833 A GB2975833 A GB 2975833A GB 411360 A GB411360 A GB 411360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chain
- sprocket
- frame
- guide
- chain guide
- 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
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
411,360. Variable-speed chain gearing. SCHULZ, J. G., 3, Rue Maspero, Paris. Oct. 26, 1933, No. 29758. Convention date, Nov. 17, 1932. [Class 80 (ii).] In variable-speed driving-mechanism for cycles &c., of the type in which a single chain is shifted from one sprocket to another of different size by a chain guide or sprocket, the chain guide is given both an axial or transverse displacement and a displacement towards or away from the axis of the sprockets, so that the length of chain between the guide and the sprocket is maintained as short as possible, in order to facilitate the engagement of the chain with each sprocket. The chain 52, Figs. 3 and 4, passes over a chain guide sprocket 18, which is mounted on a frame 19 formed with a sleeve 20 rotatably mounted on a screw 22 rigidly mounted on the cycle frame 54 by a two-part clamp 55<1>, 55<2> and a bolt 56, the sleeve 20 being rotated by means of a cable 31 and a hand control-lever 58, whereby the frame 19 is given a pivotal movement to move the chain guide 18 towards the axis of the sprockets 15, 16, 17 on the driven wheel. A spring 28 connected to a lever 26 effects the return movement of the frame 19, and also acts on a chain-tensioning roller 25. The screw 22 causes, simultaneously with the pivotal movement, a transverse movement of the frame 19 and chain guide 18, to shift the chain from one sprocket to another, the movement from a smaller to a larger sprocket being assisted by a member 24 projecting from the frame 19 and adapted to engage the intermediate part 14 of the chain. In a modification the chain guide is arranged to be in immediate proximity to the teeth of the smallest sprocket when the high speed is in gear.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR411360X | 1932-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB411360A true GB411360A (en) | 1934-06-07 |
Family
ID=8897697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29758/33A Expired GB411360A (en) | 1932-11-17 | 1933-10-26 | Improvements in or relating to change speed devices for cycles or similar vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB411360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2598557A (en) * | 1944-03-22 | 1952-05-27 | Juy Lucien Charles Hippolyte | Variable-speed gear |
| WO1988003888A1 (en) * | 1986-11-24 | 1988-06-02 | Research Corporation Technologies, Inc. | Pulley shift assembly |
| US4861321A (en) * | 1986-11-24 | 1989-08-29 | Research Corporation Technologies, Inc. | Pulley shift assembly |
-
1933
- 1933-10-26 GB GB29758/33A patent/GB411360A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2598557A (en) * | 1944-03-22 | 1952-05-27 | Juy Lucien Charles Hippolyte | Variable-speed gear |
| WO1988003888A1 (en) * | 1986-11-24 | 1988-06-02 | Research Corporation Technologies, Inc. | Pulley shift assembly |
| US4790554A (en) * | 1986-11-24 | 1988-12-13 | Research Corporation | Pulley shift assembly |
| US4861321A (en) * | 1986-11-24 | 1989-08-29 | Research Corporation Technologies, Inc. | Pulley shift assembly |
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