GB746150A - Fluid pressure railway brake equipment - Google Patents
Fluid pressure railway brake equipmentInfo
- Publication number
- GB746150A GB746150A GB21397/54A GB2139754A GB746150A GB 746150 A GB746150 A GB 746150A GB 21397/54 A GB21397/54 A GB 21397/54A GB 2139754 A GB2139754 A GB 2139754A GB 746150 A GB746150 A GB 746150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- pressure
- chamber
- diaphragm
- reservoir
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
746,150. Fluid - pressure railway brakes. WESTINGHOUSE AIR BRAKE CO. July 22, 1954 [Aug. 27,1953], No. 21397/54. Class 103 (1). A control valve assembly for fluid-pressure railway braking equipment intended particularly for trains in Europe wherein it is likely that as many as fifty or sixty per cent of the cars may have ineffective brakes or no brake equipment at all, comprises a main diaphragm control unit 5, a quick service valve device 6, a brake cylinder inshot valve device 7, a service selector valve device 8 and a reservoir release valve device 9, the assembly being connected to a brake pipe 2, auxiliary reservoir 3, brake cylinder 4, control reservoir 10, and quick service reservoir 11. The device is characterized principally in that charging of the auxiliary reservoir 3 from the brake pipe 2 takes place through conduit 22 and a passage 18 in the stem of the main diaphragm assembly 5 to chamber 17 above diaphragm 14 and then past restriotion 17, passage 151 and valve 57. If the auxiliary reservoir is charged at such a rate that the pressure above the diaphragm 14 in chamber 17 exceeds that below in chamber 15, which is in communication with the control reservoir 10, the diaphragm assembly will be moved downwardly thus tending to cut off passage 22 to restrict the rate of charging. Since the brake cylinder pressure acts in chamber 33 above top diaphragm 30 a similar regulation will take place during brake release of brake pipe pressure is increasing at an excessive rate. Connection between chamber 33 and the brake cylinder 4 is by way of chamber 103, which is in communication by choke passage 115, conduits 114 and 94, to the space below valve element 99 which may be lifted to allow the pressure to act below diaphragm 90 of the inshot valve assembly. It may thus be arranged by a suitable choice of the size of the choke 115 that when the pressure in the brake cylinder is increased to about ten pounds the valve 104 will be lifted to cut off flow to the brake cylinder except through restriction 37.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US746150XA | 1953-08-27 | 1953-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB746150A true GB746150A (en) | 1956-03-07 |
Family
ID=22120549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21397/54A Expired GB746150A (en) | 1953-08-27 | 1954-07-22 | Fluid pressure railway brake equipment |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB746150A (en) |
-
1954
- 1954-07-22 GB GB21397/54A patent/GB746150A/en not_active Expired
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