GB371341A - Improvements in and relating to vacuum braking apparatus - Google Patents
Improvements in and relating to vacuum braking apparatusInfo
- Publication number
- GB371341A GB371341A GB132231A GB132231A GB371341A GB 371341 A GB371341 A GB 371341A GB 132231 A GB132231 A GB 132231A GB 132231 A GB132231 A GB 132231A GB 371341 A GB371341 A GB 371341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- driver
- atmosphere
- chamber
- train pipe
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/465—Vacuum systems for railway vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
371,341. Fluid-pressure b r a k e s. BROWN, D. F. and WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. Jan. 14, 1931, No. 1322. [Class 103 (i).] Railway vacuum brakes comprise a driver's valve which produces a reduction of vacuum in the train pipe the extent of which depends only upon the interval of time during which the valve is maintained in application position. The driver's valve controls a relay valve 1 comprising a large diaphragm 5, a small diaphragm 10, and a valve 2 controlling an atmospheric opening in the train pipe. In running position the exhauster 14 exhausts the train pipe 3, the application chamber 8 through a cavity 18 in the driver's valve 12, and a chamber 6 below the larger diaphragm 5 of the relay valve 1. A chamber 11 above the smaller diaphragm 10 is connected to atmosphere through ports 22, 23 in the driver's valve. To apply the brakes the driver's valve is moved to connect the ports 19, 22 by a cavity having a restricted atmospheric port which thus connects the chambers 8, 6, 11 to atmosphere and allows the valve 2 to rise and connect the train pipe to atmosphere. The driver's valve can then be moved to lap position in which a further cavity connects ports 19, 22 and isolates the chambers from the atmosphere, and allows the valve 2 to close, or in practice to maintain sufficient opening to balance the fall of pressure produced by the exhauster 14. Increase of train pipe pressure due to leakage causes the valve 2 to close. The brakes may be released in steps by alternatively placing the driver's valve in release position shown in the Figure and the lap position. In emergency position of the driver's valve the train pipe is connected directly to atmosphere by a large port in the driver's valve and the reservoir 8 is also connected to atmosphere by a port in the driver's valve. An emergency valve device may be provided by connecting the chamber 6 to a deadman's valve for admitting air rapidly to this chamber and fully opening the valve 2. A restricted port is then provided between the chamber 6 and the pipe 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB132231A GB371341A (en) | 1931-01-14 | 1931-01-14 | Improvements in and relating to vacuum braking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB132231A GB371341A (en) | 1931-01-14 | 1931-01-14 | Improvements in and relating to vacuum braking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB371341A true GB371341A (en) | 1932-04-14 |
Family
ID=9719976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB132231A Expired GB371341A (en) | 1931-01-14 | 1931-01-14 | Improvements in and relating to vacuum braking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB371341A (en) |
-
1931
- 1931-01-14 GB GB132231A patent/GB371341A/en not_active Expired
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