GB632864A - Improvements in or relating to gear systems - Google Patents
Improvements in or relating to gear systemsInfo
- Publication number
- GB632864A GB632864A GB1324647A GB1324647A GB632864A GB 632864 A GB632864 A GB 632864A GB 1324647 A GB1324647 A GB 1324647A GB 1324647 A GB1324647 A GB 1324647A GB 632864 A GB632864 A GB 632864A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- gear
- change
- speed
- collars
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/38—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with synchro-meshing
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
-
- 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
- F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
- F16H2708/10—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes only the toothed wheels may be disengaged
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
632,864. Change-speed gear. MACDONALD, J. S. May 16; 1947, No. 13246. [Classes 80 (i) and 80 (ii)] In a change-speed gear two gears are rigid with one shaft and are.engageable with two gears which are mounted on a second shaft so that they rotate relatively to the shaft when moved longitudinally, during a change of ratio both shafts being in positive engagement for a short interval of time. In one embodiment a gear 23 is freely mounted on a second shaft 1 having opposite handed helical splines 20, 21 with which are engaged splined collars 25 retained in recesses in the gear 23 by end plates 27. The end plates and the collars have holes 28, 30 in which slide the pins 35 attached to cages 34 to connect either of the collars 25 to the gear 23 by longitudinal movement of the bar 37. By this engagement the gear 23 may be accelerated or decelerated in its direction of rotation relative to the shaft as the gear is moved longitudinally thus facilitating the change of speed. In modifications the two splined portions of the shaft 1 are superimposed to reduce the overall dimensions of the gearbox, and the selector bar 37 carrying the forks 32, 33 is moved at a rate proportional to the speed of shaft 1. In the latter modification, as shown in Fig. 4, the fork 38 is carried on two shafts 51 having cam grooves 57 and rotated in opposite directions through gearing 52, 53, 54 from the shaft 1. For change of gear, a lever 63 rotates a cam 62 to depress a pin 59 against a spring 60 into the cam groove 57 thus causing longitudinal movement of the selector at a rate proportional to the shaft speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1324647A GB632864A (en) | 1947-05-16 | 1947-05-16 | Improvements in or relating to gear systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1324647A GB632864A (en) | 1947-05-16 | 1947-05-16 | Improvements in or relating to gear systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB632864A true GB632864A (en) | 1949-12-05 |
Family
ID=10019469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1324647A Expired GB632864A (en) | 1947-05-16 | 1947-05-16 | Improvements in or relating to gear systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB632864A (en) |
-
1947
- 1947-05-16 GB GB1324647A patent/GB632864A/en not_active Expired
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