GB698073A - Improvements in or relating to hydraulic controlling valves - Google Patents
Improvements in or relating to hydraulic controlling valvesInfo
- Publication number
- GB698073A GB698073A GB1491549A GB1491549A GB698073A GB 698073 A GB698073 A GB 698073A GB 1491549 A GB1491549 A GB 1491549A GB 1491549 A GB1491549 A GB 1491549A GB 698073 A GB698073 A GB 698073A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- ram
- exhaust
- operated
- port
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
Abstract
698,073. Hydraulic control systems. VICKERSARMSTRONGS, Ltd. Sept. 8, 1950 [June 3, 1949, No. 14915/49. Class 69(ii) A hydraulic control valve unit comprises a combined hydraulic pressure and mechanically operated valve 5 which controls the admission of pressure liquid to an operated ram and also the flow of liquid to exhaust at a mechanically predetermined portion of the ram stroke and a mechanically operated relief valve 19 which is operable to allow the pressure liquid acting on the valve 5 to pass to exhaust. Pressure liquid enters through a port 2 and depresses the valve 5 to uncover a port 7 through which the liquid passes into a chamber 8 and then through a port 9 and check valve 10 to an outlet chamber 11. The relief valve 19 is opened by a plunger 22 having a lost motion connection with a plunger 20 operated by a lever 21 which is moved by the ram at the end of its stroke. When the relief valve 19 is opened the pressure in chamber 8 escapes to exhaust through ports 14, 3 causing the valve 5 to be moved upwards by its spring 6 to place the outlet chamber, and hence the ram cylinder, in communication with the exhaust port 3 through passages 15, 13, 16, 14. The ram returns under its own weight, or by other means, and near the end of the return stroke a lever 24 is operated to depress the valve 5 and thus throttle the exhaust so as to bring the ram to rest without shock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1491549A GB698073A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to hydraulic controlling valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1491549A GB698073A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to hydraulic controlling valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698073A true GB698073A (en) | 1953-10-07 |
Family
ID=10049800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1491549A Expired GB698073A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to hydraulic controlling valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB698073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1028844B (en) * | 1956-05-24 | 1958-04-24 | Hans Still Ag | Automatic and at the same time arbitrarily adjustable control valve for hydrostatic motors |
-
1949
- 1949-06-03 GB GB1491549A patent/GB698073A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1028844B (en) * | 1956-05-24 | 1958-04-24 | Hans Still Ag | Automatic and at the same time arbitrarily adjustable control valve for hydrostatic motors |
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