GB348578A - Improvements relating to braking apparatus for railway and other vehicles - Google Patents
Improvements relating to braking apparatus for railway and other vehiclesInfo
- Publication number
- GB348578A GB348578A GB4875/30A GB487530A GB348578A GB 348578 A GB348578 A GB 348578A GB 4875/30 A GB4875/30 A GB 4875/30A GB 487530 A GB487530 A GB 487530A GB 348578 A GB348578 A GB 348578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- armature
- pressure
- brake cylinder
- chamber
- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway systems
-
- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Arrangements (AREA)
Abstract
348,578. Fluid-pressure and electric brakes. WESTINGHOUSE BRAKE & SAXBY SIGNAL CO.. Ltd., 82, York Road, King's Cross, London.-(Assignees of Thomas, T. H.; 219, Lincoln Avenue, Edgewood, Pennsylvania, U.S.A.) Feb. 13, 1930, No. 4875. Convention date, Feb. 14, 1929. [Class 103 (i).] The fluid-pressure and electro-dynamic brakes of a vehicle are inter-connected by means of a valve controlled by the electric braking current whereby as this current falls off in consequence of slowing down of the vehicle, fluid pressure is established in the brake cylinder inversely proportional to the strength of the current. The valve device comprises a winding 6 surrounding a polepiece 7, and an armature 8, which with a diaphragm 10 attached to the casing and to a part 9 of the armature forms a chamber 11 open at 12 to the atmosphere. A pair of connected valves 17, 21 control respectively communication of a chamber 13 connected with the brake cylinder 15, to the chamber 11 and to a chamber 26 connected to the drivers valve 28 of the fluid-pressure brake. A spring 30 acting through a rod 29 on the armature 8 tends to close and open respectively the valves 17, 21 so that when the winding is deenergized the driver may by the valve 28 supply and exhaust the brake cylinder 15 by way of the valve 21. For electrodynamic braking the motor 1 runs as a generator and the switch 4 then connects the valve winding 6 in the circuit and the drivers valve 28 is put into application position. The regenerative current is at first generally sufficient to hold the armature raised against the action of the spring 30 so that the valves 17, 21 are respectively open and closed and the brake cylinder is thus connected to the exhaust port 12. As the current falls with the slowing of the vehicle, the armature moves downwards to close the valve 17 and open the valve 21 to supply the brake cylinder until the pressure therein acting on the diaphragm 10 lifts the armature sufficiently to re-close the valve 21. The pressure established in the cylinder is thus inversely proportional to and compensates for the falling off of the electrodynamic braking effect.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US348578XA | 1929-02-14 | 1929-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB348578A true GB348578A (en) | 1931-05-13 |
Family
ID=21879031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4875/30A Expired GB348578A (en) | 1929-02-14 | 1930-02-13 | Improvements relating to braking apparatus for railway and other vehicles |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE530901C (en) |
FR (1) | FR691387A (en) |
GB (1) | GB348578A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1057165B (en) * | 1954-12-20 | 1959-05-14 | Licentia Gmbh | Brake arrangement for an electric traction vehicle |
BE543591A (en) * | 1954-12-20 | |||
DE1024548B (en) * | 1955-01-17 | 1958-02-20 | Bosch Gmbh Robert | Compressed air braking device in vehicles, in particular in rail vehicles |
DE1142382C2 (en) * | 1957-10-30 | 1973-01-11 | Westinghouse Air Brake Co | Braking device, especially for rail vehicles with an electrodynamic braking device, an indirect and a direct-acting compressed air braking device |
NL262944A (en) * | 1960-03-31 |
-
1929
- 1929-12-20 DE DEW84533D patent/DE530901C/en not_active Expired
-
1930
- 1930-02-13 FR FR691387D patent/FR691387A/en not_active Expired
- 1930-02-13 GB GB4875/30A patent/GB348578A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE530901C (en) | 1931-08-01 |
FR691387A (en) | 1930-10-21 |
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