GB221191A - Improvements in hydraulic couplings and change speed gears - Google Patents
Improvements in hydraulic couplings and change speed gearsInfo
- Publication number
- GB221191A GB221191A GB17204/24A GB1720424A GB221191A GB 221191 A GB221191 A GB 221191A GB 17204/24 A GB17204/24 A GB 17204/24A GB 1720424 A GB1720424 A GB 1720424A GB 221191 A GB221191 A GB 221191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- chamber
- valve
- revolutions
- sleeve
- 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
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
- F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
- F16H39/22—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type with liquid chambers shaped as bodies of revolution concentric with the main axis of the gearing
- F16H39/24—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type with liquid chambers shaped as bodies of revolution concentric with the main axis of the gearing with rotary displacement members, e.g. provided with axially or radially movable vanes passing movable sealing members
-
- 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
- F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
- F16H61/448—Control circuits for tandem pumps or motors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
221,191. Wingquist, S. G. Aug. 29, 1923, [Convention date]. Clutches and speed-varying mechanism.- Hydraulic variable-speed gears, comprising two or more pump elements or systems of pump elements and controlling valves, are provided with one or more auxiliary valves so arranged that the main valve or valves are closed above a prredetermined number of revolutions or below a predetermined pressure, and are opened below said number of revolutions if the pressure be exceeded. The auxiliary valves are also preferably arranged so that after cutting in a transmission ratio, readjustment to the preceding transmission ratio is allowed when the pressure is less than or equal to the pressure at which the cutting in commenced. The main controlling valve 15, Fig. 1, is connected to a piston 16 of equal, greater, or less diameter. In the latter case, the valve also functions as a relief valve. The valve is opened when a chamber 17 is connected to the pressure chamber of the gear, and is closed when the chamber is connected to the suction chamber. The chamber 17 is connected to a channel 43 communicating with apertures 42, Fig. 7, in a sleeve 20. The sleeve 20 is rotatably mounted and provided with a weight 43, Fig. 4, opposed by a spring, so that below a predetermined number of revolutions an aperture 25 in the sleeve communicates with a passage 27 leading to the pressure chamber of the gear. When the parts are in the position shown in Fig. 7, the apertures 42 and therefore the chamber 17 are connected to the suction chamber of the gear through a passage 45. The apertures 42 are connected to the pressure chamber when the pressure increases to force back a piston 32 against the action of a spring 31. When the predetermined number of revolutions is attained, the sleeve 20 moves to bring the aperture 25 into communication with a passage 29 leading to the suction chamber, so that the pressure no longer acts on the piston 32.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE221191X | 1923-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB221191A true GB221191A (en) | 1925-02-19 |
Family
ID=20305458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17204/24A Expired GB221191A (en) | 1923-08-29 | 1924-07-17 | Improvements in hydraulic couplings and change speed gears |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB221191A (en) |
-
1924
- 1924-07-17 GB GB17204/24A patent/GB221191A/en not_active Expired
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