GB707254A - Improvements in hydraulic pumps and motors - Google Patents
Improvements in hydraulic pumps and motorsInfo
- Publication number
- GB707254A GB707254A GB2453951A GB2453951A GB707254A GB 707254 A GB707254 A GB 707254A GB 2453951 A GB2453951 A GB 2453951A GB 2453951 A GB2453951 A GB 2453951A GB 707254 A GB707254 A GB 707254A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- blocks
- shaft
- piston
- eccentric
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F01B3/0008—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having self-acting distribution members, e.g. actuated by working fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
707,254. Reciprocating pumps. BEACHAM HYDRAULIC CO., Ltd., and BEACHAM, T. E. Oct. 15, 1952 [Oct. 22, 1951; Nov. 14, 1951], Nos. 24539/51 and 26680/51. Class 102 (1). [Also in Group XXIX] In a hydraulic motor or pump in which a swash plate 3 mounted on a shaft 1 is driven by or drives pistons 4 reciprocating in cylinders 6 parallel to the axis of rotation of the shaft each cylinder 6 has a separate distributing slide valve 9 associated therewith arranged radially with respect to the shaft and reciprocated by a common eccentric 10 rotatable with the shaft. The cylinders 6 are formed by bores in blocks 20, also bored for the piston valves 9, and located in a carrier 21 clamped between casing parts 17 and 30 by bolts 33 which also act to hold the valve chest portions of the blocks 20 between the carrier 21 and an end cover disc 32. The blocks 20 are aligned and prevented from rotation by studs 55 in the casing 21 having projections 56 fitting into holes between angled surfaces 57 of adjacent blocks. Alternatively, the blocks may be all in one integral piece. The piston valve bore in each block 20 has three annular enlargements 12, 13 and 14, the middle one 13 being in permanent communication with cylinder 6 and the other two 12, 14 being respectively in communication with a liquid supply inlet port 7 and an exhaust port 8 in the end cover 32 by passages 34, 35 and 37, 38 respectively therein and bores 36, 39 respectively in each block 20. Reciprocation of the valve 9 causes its associated cylinder 6 to be respectively placed in communication with the inlet port 7 during the outstroke of the piston 4 and the exhaust port 8 during the instroke of the piston when the machine acts as an hydraulic motor and vice versa when it acts as a pump; in the latter case the pistons 6 are preferably provided with return springs. The valve 9 is moved radially outwards by an eccentric ring 24 mounted on the eccentric 10 and returned by springs 11 acting on a washer 44 mounted on the outer end of the valve. In a modification springs 11 are dispensed with and the valve is positively actuated in both directions by being pivotally secured at its inner end to an eccentric ring. Specification 646,371 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2453951A GB707254A (en) | 1951-10-22 | 1951-10-22 | Improvements in hydraulic pumps and motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2453951A GB707254A (en) | 1951-10-22 | 1951-10-22 | Improvements in hydraulic pumps and motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB707254A true GB707254A (en) | 1954-04-14 |
Family
ID=10213226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2453951A Expired GB707254A (en) | 1951-10-22 | 1951-10-22 | Improvements in hydraulic pumps and motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB707254A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520059A1 (en) * | 1982-01-15 | 1983-07-22 | Leduc Rene Hydro Sa | HYDRAULIC PUMP WITH CONTROLLED DISCHARGE VALVES |
US5440878A (en) * | 1992-08-27 | 1995-08-15 | Vernon E. Gleasman | Variable hydraulic machine |
-
1951
- 1951-10-22 GB GB2453951A patent/GB707254A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520059A1 (en) * | 1982-01-15 | 1983-07-22 | Leduc Rene Hydro Sa | HYDRAULIC PUMP WITH CONTROLLED DISCHARGE VALVES |
US5440878A (en) * | 1992-08-27 | 1995-08-15 | Vernon E. Gleasman | Variable hydraulic machine |
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