GB563212A - Improvements in fluid flow control valves - Google Patents
Improvements in fluid flow control valvesInfo
- Publication number
- GB563212A GB563212A GB1666242A GB1666242A GB563212A GB 563212 A GB563212 A GB 563212A GB 1666242 A GB1666242 A GB 1666242A GB 1666242 A GB1666242 A GB 1666242A GB 563212 A GB563212 A GB 563212A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pipe
- pitch
- leading
- servo
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Hydraulic Motors (AREA)
Abstract
563,212. Fluid-pressure servomotor control systems. DE HAVILLAND AIRCRAFT CO., Ltd., and DOVE, E. B. Nov. 24, 1942, No. 16662. [Class 135] A hydraulic control mechanism for variable pitch airscrews controlled by an enginedriven governor to maintain the engine speed constant includes a manually-actuated valve adapted in one position to connect the governor unit to the pitch servo-control piston and the throttle power piston to exhaust, in a second position to connect both power pistons to exhaust and in a third position to connect the governor unit to the throttle power piston and the motive fluid supply directly to the pitch power piston. The pitch servo-piston is provided with a follow-up sleeve and controls the piston of the blades either by means of a hydraulic jack or by means of clutches through which pitch changing gearing is operatively connected to a powerdriven shaft which is constantly rotating or otherwise. The valve member 20 has two flats 24, 26 and a through passage 28 leading from the flat 24 to one of the lands of the piston. In the position shown, a pipe 18 leading to the governor unit is connected to a pipe leading to the servo-control piston while a pipe 14 leading to the throttle jack is coupled to the exhaust pipe 32. By moving the valve member downwards, pipes 16 and 18 are closed and the pipe 12 leading to the servo-control piston and the pipe 14 are connected to the exhaust pipe. This allows a spring associated with the servocontrol piston to move it towards the feathering position. If the valve is moved upwards, pipes 14, 18 are connected to put the throttle jack under the control of the governor unit and to connect the pipe 12 to a pipe 16 supplying motive fluid so supplying pressure fluid to the servo-control piston in the direction to cause the pitch of the blades to become progressively finer and finally assume a negative pitch. According to the Provisional Specification, the valve may be used for other purposes. Specification 581,326 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1666242A GB563212A (en) | 1942-11-24 | 1942-11-24 | Improvements in fluid flow control valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1666242A GB563212A (en) | 1942-11-24 | 1942-11-24 | Improvements in fluid flow control valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB563212A true GB563212A (en) | 1944-08-03 |
Family
ID=10081348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1666242A Expired GB563212A (en) | 1942-11-24 | 1942-11-24 | Improvements in fluid flow control valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB563212A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2473651A1 (en) * | 1980-01-09 | 1981-07-17 | Heilmeier & Weinlein | CONTROL VALVE |
-
1942
- 1942-11-24 GB GB1666242A patent/GB563212A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2473651A1 (en) * | 1980-01-09 | 1981-07-17 | Heilmeier & Weinlein | CONTROL VALVE |
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