GB356339A - Improvements in and relating to railway signalling - Google Patents
Improvements in and relating to railway signallingInfo
- Publication number
- GB356339A GB356339A GB1884230A GB1884230A GB356339A GB 356339 A GB356339 A GB 356339A GB 1884230 A GB1884230 A GB 1884230A GB 1884230 A GB1884230 A GB 1884230A GB 356339 A GB356339 A GB 356339A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- valve
- vacuum
- train
- 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
- 230000011664 signaling Effects 0.000 title 1
- 230000000007 visual effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
356,339. Fluid-actuated valves. GRESHAM, H. E., GRESHAM, J. N., Ordsall Lane, Salford, Manchester, and SPENCER, A., 2, Central Buildings, London. June 20,1930, No. 18842. [Class 135.] Valves controlled by pilot or relay valves.-Audible or visual signals on a train are initiated by a track contact which causes an air impulse to be given to open the signal operating means to the train vacuum source and this last then maintains the signal in operation indefinitely. The apparatus shown comprises a diaphragm c formed with small ports m so that normally a vacuum exists on both sides due to the connection with the train pipe j. At a track contact a spring or like valve (not shown), is momentarily opened to admit air by the pipe n to the underside of the diaphragm c which rises and by its spindle q opens a valve h to connect a siren i with the vacuum pipe j. The diaphragm spindle by means of a lever s also lifts a valve e to maintain the underside of the diaphragm at atmospheric pressure so that the signal persists until this valve e is manually closed, whereupon the vacuum beneath the diaphragm is gradually restored through the ports m. The diaphragm ports m are closed by engaging a valve seating p when the diaphragm rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1884230A GB356339A (en) | 1930-06-20 | 1930-06-20 | Improvements in and relating to railway signalling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1884230A GB356339A (en) | 1930-06-20 | 1930-06-20 | Improvements in and relating to railway signalling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB356339A true GB356339A (en) | 1931-09-10 |
Family
ID=10119332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1884230A Expired GB356339A (en) | 1930-06-20 | 1930-06-20 | Improvements in and relating to railway signalling |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB356339A (en) |
-
1930
- 1930-06-20 GB GB1884230A patent/GB356339A/en not_active Expired
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