GB928423A - Vehicle transmission systems - Google Patents
Vehicle transmission systemsInfo
- Publication number
- GB928423A GB928423A GB276060A GB276060A GB928423A GB 928423 A GB928423 A GB 928423A GB 276060 A GB276060 A GB 276060A GB 276060 A GB276060 A GB 276060A GB 928423 A GB928423 A GB 928423A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- swash plate
- pedal
- movement
- angularity
- 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
- 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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/437—Pump capacity control by mechanical control means, e.g. by levers or pedals
-
- 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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
928,423. Motor vehicle driving gear ; controlling vehicles. JOSEPH LUCAS (INDUSTRIES) Ltd. April 24, 1961 [Jan. 26, 1960; Sept. 21, 1960], Nos. 2760/60 and 32395/60. Classes 79(2) and 79(5) [Also in Group XXIV] In a vehicle transmission wherein an engine driven swash plate type pump supplies fluid to one or more motors for driving the vehicle wheels or tracks, the angularity of the swash plate is adjustable to vary the speed ratio by driver operable means including a lever angularly movable about a fulcrum which can be preset to determine the maximum output from the pump. As shown in Fig. 1, the swash plate 3 is adjustable by a servo cylinder 4 responding to a plunger 5 operated by a cam 7 the angularity of which is controlled from a pedal 15 acting through a link 14, levers 13 and 10 and links 8 and 9. Stops 28 and 29 are provided to limit the movement of pedal 15 in positions for forward and reverse directions of motion corresponding to the maximum forward or reverse speeds of the engine. A catch piece 16 arrests movement of the pedal at a midway position of the cam corresponding to zero angularity of the swash plate-or neutral-to prevent accidental engagement of a reverse drive. The fulcrum 17 of lever 13 is connected to a slide 18 and may be moved by a handle 27 acting through links 25, 24, 23, 21 and 20 so that the movement of the cam 7 can be varied for a given movement of the pedal 15. Since the angular movement of the pedal 15 is limited, the maximum output of the pump can be predetermined. The linkage associated with handle 27 is such that in one extreme position, the swash plate is in a position of zero obliquity. In a modification, Fig. 2, the plunger 5 is connected to a lever 30 to which is connected a cam follower 31 and an L- shaped lever 32 upon which is mounted another cam follower 33, the levers 30 and 32 also being connected by a coil spring 34 so that the followers 31 and 33 are urged into contact with the cam 7. The follower 33 engages a notch in the cam 7 at a point corresponding to the position of zero angularity of the pump swash plate whereby the catch 16 may be omitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB276060A GB928423A (en) | 1960-01-26 | 1960-01-26 | Vehicle transmission systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB276060A GB928423A (en) | 1960-01-26 | 1960-01-26 | Vehicle transmission systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB928423A true GB928423A (en) | 1963-06-12 |
Family
ID=9745380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB276060A Expired GB928423A (en) | 1960-01-26 | 1960-01-26 | Vehicle transmission systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB928423A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257597B (en) * | 1964-08-20 | 1967-12-28 | Lucas Industries Ltd | Actuating device for the swash plate of a pump designed as an axial piston unit of a hydrostatic transmission for vehicles |
| DE3015073A1 (en) * | 1979-10-13 | 1981-04-30 | Kubota Ltd., Osaka | DEVICE FOR ADJUSTING THE SPEED OF A VEHICLE |
-
1960
- 1960-01-26 GB GB276060A patent/GB928423A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257597B (en) * | 1964-08-20 | 1967-12-28 | Lucas Industries Ltd | Actuating device for the swash plate of a pump designed as an axial piston unit of a hydrostatic transmission for vehicles |
| DE3015073A1 (en) * | 1979-10-13 | 1981-04-30 | Kubota Ltd., Osaka | DEVICE FOR ADJUSTING THE SPEED OF A VEHICLE |
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