GB916361A - Improvements in or relating to change-speed gears - Google Patents
Improvements in or relating to change-speed gearsInfo
- Publication number
- GB916361A GB916361A GB1593560A GB1593560A GB916361A GB 916361 A GB916361 A GB 916361A GB 1593560 A GB1593560 A GB 1593560A GB 1593560 A GB1593560 A GB 1593560A GB 916361 A GB916361 A GB 916361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support
- chains
- shaft
- contact
- ratio
- 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
-
- 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
- F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
- F16H29/02—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts
- F16H29/08—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts in which the transmission ratio is changed by adjustment of the path of movement, the location of the pivot, or the effective length, of an oscillating connecting member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
916,361. Variable-speed ratchet gear. USTAV PRO VYZKUM MOTORVYCH VOZIDEL. May 5, 1960 [May 6, 1959], No. 15935/60. Addition to 868,736. Class 80 (2). In a variable-speed ratchet gear similar to that shown in Figs. 3-6 of the parent Specification, the contact-pieces 3<SP>1</SP> are shaped to provide a uniform output speed for each transmission ratio and the tensioning means for the drive chains 3 are modified so as to increase the tension as the ratio is increased. The transmission comprises a driving crank-shaft 1 having four cranks with contact rollers 2<SP>1</SP> engaging the rigid contact pieces 3<SP>1</SP> which are attached to the chains 3 which engage sprockets 10 forming the driving members of ratchets on an output shaft 12. Each contact-piece 3<SP>1</SP> is pivoted at 4 to an adjustable support 5 and is shaped as shown to give a uniform output speed at each gear ratio. The free ends of the chains are secured at 90 to sprockets 15 which are freely mounted on a shaft 88 and are coupled in pairs, the chains 3 of each coupled pair being associated with cranks offset by 180 degrees and passing in opposite directions around the sprockets. The shaft 88 is adjustable along a rod 91 by means of a cam member 87 operatively connected to the shaft which is contacted by a roller 94 of an arm 95 adjustably mounted on a toothed segment 100 pivoted at 96 and meshing teeth 99 formed on the adjustable support 5 which pivots about pins 18. A rod 102 is pivotally connected to each contact-piece 3<SP>1</SP> and is biased by springs 106 which bear, through a carriage 107 and rollers 108 on a track 109 formed on the support 5. In the neutral (shown) and low ratio positions of the support 5, the carriages 107 of the tensioning devices bear against stops 111 on the support; on increasing the ratio the carriages abut fixed stops 110, and further movement of the support 5 displaces the carriages relative thereto and increases the loading of the springs 106 to increase the tension of the chains 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS267359 | 1959-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB916361A true GB916361A (en) | 1963-01-23 |
Family
ID=5364499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1593560A Expired GB916361A (en) | 1959-05-06 | 1960-05-05 | Improvements in or relating to change-speed gears |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB916361A (en) |
-
1960
- 1960-05-05 GB GB1593560A patent/GB916361A/en not_active Expired
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