GB691225A - Improvements relating to fluid pressure braking apparatus - Google Patents
Improvements relating to fluid pressure braking apparatusInfo
- Publication number
- GB691225A GB691225A GB686651A GB686651A GB691225A GB 691225 A GB691225 A GB 691225A GB 686651 A GB686651 A GB 686651A GB 686651 A GB686651 A GB 686651A GB 691225 A GB691225 A GB 691225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- quick
- pressure
- service
- brake
- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
- B60T15/24—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by three fluid pressures
- B60T15/30—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by three fluid pressures with a quick braking action
- B60T15/302—Railway control or brake valves with evacuation of air to a reservoir, to the atmosphere or to the brake cylinder
- B60T15/304—Railway control or brake valves with evacuation of air to a reservoir, to the atmosphere or to the brake cylinder with one slide valve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
691,225. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. Jan. 1, 1952 [March 22, 1951], No. 6866/51. Class 103 (i). The accelerator or quick-service bulb 15 of a distributer valve for fluid pressure braking apparatus is adapted to be charged through a quick-service valve 21 and to exhaust through an auxiliary valve 13 which is opened by the piston 1 of the quick inshot valve when in its uppermost position. The quick service valve 21 is normally kept closed by a spring 27 and may be opened by auxiliary reservoir pressure in chamber 25 on one side of the diaphragm 22 acting in opposition to brake pipe pressure in chamber 23 on the other side of the diaphragm. When a vehicle has been cut out of a train with its brakes applied, there may be sufficient pressure left in the auxiliary reservoir to keep the valve 21 open. Therefore when charging is commenced through the brake pipe, air will be able to escape to atmosphere through passage 20, the quick service bulb 15, choke 18, passages 19, 14, open valve 13 and passage 11 until such pressure is reached that the piston 1 of the quick inshot valve moves down and closes valve 13. To avoid this loss of air during the initial charging period a check valve 16 is inserted between passages 14 and 19, spring-loaded so that it will not open until the brake-pipe pressure has become sufficient to cause the quick inshot valve to close valve 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB686651A GB691225A (en) | 1951-03-22 | 1951-03-22 | Improvements relating to fluid pressure braking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB686651A GB691225A (en) | 1951-03-22 | 1951-03-22 | Improvements relating to fluid pressure braking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691225A true GB691225A (en) | 1953-05-06 |
Family
ID=9822199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB686651A Expired GB691225A (en) | 1951-03-22 | 1951-03-22 | Improvements relating to fluid pressure braking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB691225A (en) |
-
1951
- 1951-03-22 GB GB686651A patent/GB691225A/en not_active Expired
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