GB740925A - Improvements relating to distributor valve assemblies for compressed air braking systems for railway vehicles - Google Patents
Improvements relating to distributor valve assemblies for compressed air braking systems for railway vehiclesInfo
- Publication number
- GB740925A GB740925A GB1363753A GB1363753A GB740925A GB 740925 A GB740925 A GB 740925A GB 1363753 A GB1363753 A GB 1363753A GB 1363753 A GB1363753 A GB 1363753A GB 740925 A GB740925 A GB 740925A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- control reservoir
- pressure
- brake
- pipe pressure
- 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
740,925. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. May 4,1954 [May 15, 1953], No. 13637/53. Class 103 (1). In a distribution valve assembly for a compressed air railway braking system comprising a control reservoir charging valve 5 operated by a movable abutment 60 to establish and to cut off communication between the control reservoir 7 and its charging source, the abutment 60 which, as shown, is a diaphragm, is subjected on one face to control reservoir pressure acting in chamber 62, and on the other face in chamber 59 to brake pipe pressure, whilst the inshot valve 4 is open, and to a pressure which is lower than brake-pipe pressure whilst the inshot valve is closed. This last condition is brought about by arranging for the space 59 to be placed in communication through passages 66 and cavity 69 with atmospheric port 104 when the inshot value 4 is in its open lower position. This arrangement avoids the possibility of the control reservoir charging valve being opened as a result of a temporary increase in brake pipe pressure above the normal made in order to speed up release of the brakes, so that the charging valve might be opened too soon and the consequential overcharging of the control reservoir causing a false operation of the valve to its application position when the brake pipe pressure returns to normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1363753A GB740925A (en) | 1953-05-15 | 1953-05-15 | Improvements relating to distributor valve assemblies for compressed air braking systems for railway vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1363753A GB740925A (en) | 1953-05-15 | 1953-05-15 | Improvements relating to distributor valve assemblies for compressed air braking systems for railway vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB740925A true GB740925A (en) | 1955-11-23 |
Family
ID=10026649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1363753A Expired GB740925A (en) | 1953-05-15 | 1953-05-15 | Improvements relating to distributor valve assemblies for compressed air braking systems for railway vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB740925A (en) |
-
1953
- 1953-05-15 GB GB1363753A patent/GB740925A/en not_active Expired
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