GB670285A - Improvements in or relating to change-speed mechanism - Google Patents
Improvements in or relating to change-speed mechanismInfo
- Publication number
- GB670285A GB670285A GB10445/49A GB1044549A GB670285A GB 670285 A GB670285 A GB 670285A GB 10445/49 A GB10445/49 A GB 10445/49A GB 1044549 A GB1044549 A GB 1044549A GB 670285 A GB670285 A GB 670285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crank
- link
- speed
- lever
- 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)
- Transmission Devices (AREA)
Abstract
670,285. Variable-speed gearing. SCHMITT, G., and ROGGEN, M. VAN. April 20, 1949 [April 28, 1948], No. 10445/49. Class 80 (ii). The fulcrum 5 of a lever 4 oscillated by a rotary driving crank 2 and connected by a link 6 to a driven crank 9 oppositely rotating a shaft 11 through a one-way clutch 10, is mounted on a control arm 12 so as to be movable to vary the speed ratio, the axes of the members 5, 11 being on opposite sides of the link 6 and the latter always dividing the line between the axes in such a ratio that the product of this ratio and the speed of the point of articulation 7 between the link and lever is a constant, a geometrical analysis being given to illustrate that the speed of the crank 9 may then be made to bear a constant relation to that of the crank 2 over a given power stroke, up to at least 90 degrees of arc. As shown, the necessary cycloidal path of movement of the fulcrum 5 to ensure that such relations exist for all speed ratios is approximated to the are of a circle and the arm 12 is a lever with a pivot 13 near the axis of revolution of the crank 2. The link 6 is of the same length as the distance between the points 5 and 7 so that the speed ratio may be reduced to zero by bringing the lever 4 into line with the link 6. In Fig. 8 (not shown) the lever 12 is fulcrummed about the axis of the crank 2 and the link 6 is longer than the distance between the points 5 and 7. In practice, the arrangement is quadruplicated to give a smooth power flow throughout the cycle of operations. The actual output shaft may be placed in any position, regardless of the theoretical considerations governing the disposition of the axis of the shaft 11, by connecting the crank 9 and output shaft through a parallelogram linkage. Either a reversing-gearing or a two-speed direct drive and countershaft gear may be placed behind the main gearing in series therewith.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE670285X | 1948-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB670285A true GB670285A (en) | 1952-04-16 |
Family
ID=3877415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10445/49A Expired GB670285A (en) | 1948-04-28 | 1949-04-20 | Improvements in or relating to change-speed mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB670285A (en) |
-
1949
- 1949-04-20 GB GB10445/49A patent/GB670285A/en not_active Expired
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