GB137638A - Improvements relating to the transmission of motion at variable speeds - Google Patents
Improvements relating to the transmission of motion at variable speedsInfo
- Publication number
- GB137638A GB137638A GB355319A GB355319A GB137638A GB 137638 A GB137638 A GB 137638A GB 355319 A GB355319 A GB 355319A GB 355319 A GB355319 A GB 355319A GB 137638 A GB137638 A GB 137638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- valve
- valves
- rotors
- ports
- 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
- F16H39/08—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 each with one main shaft and provided with pistons reciprocating in cylinders
- F16H39/16—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 each with one main shaft and provided with pistons reciprocating in cylinders with cylinders arranged perpendicular to the main axis of the gearing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
Abstract
137,638. Smith, R. J., and Smith, J. B. Feb. 13, 1919. Revolving-cylinder pumps.-In hydraulic apparatus for transmitting motion at variable speeds of the type employing a radial-cylinder pump and motor disposed on opposite sides of a stationary valve-plate, the pistons 6, Fig. 1, are kept in contact with cross-heads 7 engaging a floating ring 8, which rotates within an adjustable or fixed eccentrically-disposed ring 11. Extensions 9 of the cross-heads work in guides 10 bolted to the rotors. The cylinders are disposed in series. The stationary valve-plate 17 is provided with ports 16, 18, and with chambers 20, 21 connected to the ports and containing spring-pressed valves 24. Each rotor has a balance chamber 27 connected to one of the chambers 20, 21, and, when pressure is admitted to a chamber 27 by a valve 24, a piston 28 is forced outwards, and the oil pressure reacts on the rotor to hold it up to the valve plate. When there is no pressure in the system, springs 33 hold the rotors up. In modifications, the balancing pistons 28 are contained in chambers in the valve-plate 17, as shown in Fig. 7, and where the motor is always to rotate in the same direction the valves 24 are dispensed with. The central portion of the plate 17 may be made concave to receive a loose plate 66, which is free to swivel but is prevented from rotating. In a further modification, the rotors are kept up. to the valve-plate by forming the couplings between the rotors and their shafts with inclined claws. The apparatus is also provided with cushioning-devices and release and non-return valves, as described in Specification 137,639, [Class 69 (ii), Hydraulic presses &c.]. the cushioning-devices comprising spring-pressed pistons 34 in cylinders 35 communicating with the ports in the valve' 17, the pistons having relief valves 39, which are opened when their stems contact with adjustable rods 40. The release valves 43, 44 communicate each with one of the ports 16, 18, and are operated by cam surfaces 45, 46 on the wheel 13 for setting the eccentric 11.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB355319A GB137638A (en) | 1919-02-13 | 1919-02-13 | Improvements relating to the transmission of motion at variable speeds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB355319A GB137638A (en) | 1919-02-13 | 1919-02-13 | Improvements relating to the transmission of motion at variable speeds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB137638A true GB137638A (en) | 1920-01-22 |
Family
ID=9760500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB355319A Expired GB137638A (en) | 1919-02-13 | 1919-02-13 | Improvements relating to the transmission of motion at variable speeds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB137638A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2481754A (en) * | 1946-07-27 | 1949-09-13 | Caterpillar Tractor Co | Pump |
US2530337A (en) * | 1946-04-12 | 1950-11-14 | Edward S Marnon | Fluid pressure unit |
US2553850A (en) * | 1946-05-18 | 1951-05-22 | Oilgear Co | Apparatus for scavenging hydrodynamic machines |
-
1919
- 1919-02-13 GB GB355319A patent/GB137638A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530337A (en) * | 1946-04-12 | 1950-11-14 | Edward S Marnon | Fluid pressure unit |
US2553850A (en) * | 1946-05-18 | 1951-05-22 | Oilgear Co | Apparatus for scavenging hydrodynamic machines |
US2481754A (en) * | 1946-07-27 | 1949-09-13 | Caterpillar Tractor Co | Pump |
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