GB188002A - Improvements in or relating to pneumatic brakes - Google Patents
Improvements in or relating to pneumatic brakesInfo
- Publication number
- GB188002A GB188002A GB1188021A GB1188021A GB188002A GB 188002 A GB188002 A GB 188002A GB 1188021 A GB1188021 A GB 1188021A GB 1188021 A GB1188021 A GB 1188021A GB 188002 A GB188002 A GB 188002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- train
- pipe
- port
- brake cylinder
- 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
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
- B60T13/26—Compressed-air systems
- B60T13/36—Compressed-air systems direct, i.e. brakes applied directly by compressed air
- B60T13/365—Compressed-air systems direct, i.e. brakes applied directly by compressed air for railway vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
188,002. Drolshammer, I. April 25, 1921. Fluid-pressure. - In brakes of the kind described in Specification 164,041, local venting of the train-pipe is effected by the brake cylinder supply valve member instead of by the piston member which is subject to the train-pipe pressure, so that venting is effected at each reduction in train-pipe pressure. Manually actuated cocks for regulating the supply of air to the brake cylinder and the venting of the train-pipe and for releasing the brakes and a modified stop device for limiting the brake cylinder pressure on a vehicle are described. As shown in Fig. 1, the valve member s is provided with a chamber R which is normally open to an exhaust port p. The brake cylinder connected at g is, in the release position shown, connected to the exhaust port h. The train-pipe is connected at T and when the pressure therein is reduced to effect an application of the brakes. the piston K moves downwards under the action of the spring f<2> and through the spring f<1> moves the valve s to uncover the auxiliary reservoir port e to supply the brake cylinder. The exhaust port p of the chamber R is also closed and a passage o uncovered to allow the train-pipe to vent into this chamber. When the brake cylinder pressure acting through the passage o<1> on the piston a<3> has risen sufficiently the valve s is returned thereby to close the supply port e and to re-open the chamber R to the exhaust port p. If a further reduction in train-pipe pressure is effected the train-pipe is again vented to the chamber R. In the valve shown in Fig. 3 the train-pipe is conr.ected through a cock H<1> (1) to the chamber S beneath the piston K by passage 29, (2) to ports X<1>, X<2> through ports 27. 28 and passage 0, and (3) past a non-return valve v<1> to a port k. The. train-pipe is thus vented to the brake cylinder by the valve s both through the port k and the ports X<1>, X<2>. With a gradual reduction in train-pipe pressure only the small port X<1> is uncovered, with a quick reduction both the ports X<1>, X<2> ara uncovered. The ports X<1>, X<2> may instead vent the train-pipe to the atmosphere. The cock H<1> may be turned to cut off (1) the port 28 (2) the ports 27 and 28 or (3) the passage to the port 29 as well as the ports 27, 28. A second cock may be provided adapted to regulate or cut off the passage E from the auxiliary reservoir and also to connect the passage g from the brake cylinder to atmosphere. The stop device for limiting the brake pressure comprises two rack sleeves m, 11 free to slide with respect to each other and the rod d of the piston K. The sleeves are engaged by pinions B<1>, B<2>. The sleeve 11 carries a spring f<3> to project above the sleeve m. which thus serves as a buffer which must be compressed to a. greater and greater extent by the abutment t as the sleeve m is raised. The application of the brakes on vehicles in which the sleeve m is differently set is thus rendered more nearly simultaneous. The lever 17 may be adjusted manually or automatically according to the load by the movement of the vehicle body upon the springs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1188021A GB188002A (en) | 1921-04-25 | 1921-04-25 | Improvements in or relating to pneumatic brakes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1188021A GB188002A (en) | 1921-04-25 | 1921-04-25 | Improvements in or relating to pneumatic brakes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB188002A true GB188002A (en) | 1922-10-25 |
Family
ID=9994349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1188021A Expired GB188002A (en) | 1921-04-25 | 1921-04-25 | Improvements in or relating to pneumatic brakes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB188002A (en) |
-
1921
- 1921-04-25 GB GB1188021A patent/GB188002A/en not_active Expired
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