GB567105A - Improvements in and relating to unloading valves for hydraulic pumps - Google Patents
Improvements in and relating to unloading valves for hydraulic pumpsInfo
- Publication number
- GB567105A GB567105A GB416443A GB416443A GB567105A GB 567105 A GB567105 A GB 567105A GB 416443 A GB416443 A GB 416443A GB 416443 A GB416443 A GB 416443A GB 567105 A GB567105 A GB 567105A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- ram
- last part
- relating
- hydraulic pumps
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
567,105. Valves. TOWLER, J. M., and TOWLER, F. H. March 15, 1943, No. 4164. [Class 135] [Also in Group XXVIII] A valve such as described in Specification 526,242, moved by hydraulic pressure against a spring, for byepassing in sequence the chambers of a multi-ram pump or a group of two or more pumps, is provided with means necessitating a substantial increase in pressure to effect the last part of the unloading stroke. As shown, the first part of the unloading stroke is effected against the resistance of a spring 19 by the pressure acting both on a piston 21 and a ram 22, and the last part by the pressure acting on the ram alone. In another form, the piston 21 is dispensed with and an additional spring supplements the resistance of the spring 19 during the last part of the unloading stroke. Specification 566,240 also is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB416443A GB567105A (en) | 1943-03-15 | 1943-03-15 | Improvements in and relating to unloading valves for hydraulic pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB416443A GB567105A (en) | 1943-03-15 | 1943-03-15 | Improvements in and relating to unloading valves for hydraulic pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB567105A true GB567105A (en) | 1945-01-29 |
Family
ID=9771922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB416443A Expired GB567105A (en) | 1943-03-15 | 1943-03-15 | Improvements in and relating to unloading valves for hydraulic pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB567105A (en) |
-
1943
- 1943-03-15 GB GB416443A patent/GB567105A/en not_active Expired
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