GB447118A - Improvements relating to the brake mechanism of railway vehicles - Google Patents
Improvements relating to the brake mechanism of railway vehiclesInfo
- Publication number
- GB447118A GB447118A GB3198434A GB3198434A GB447118A GB 447118 A GB447118 A GB 447118A GB 3198434 A GB3198434 A GB 3198434A GB 3198434 A GB3198434 A GB 3198434A GB 447118 A GB447118 A GB 447118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- valve
- train pipe
- reservoir
- speed
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3235—Systems specially adapted for rail vehicles
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4095—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system including wheel driven pumps for detecting a speed condition
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
447,118. Fluid -pressure brakes. GRESHAM & CRAVEN, Ltd., GRESHAM, J. N., and MARSH, G. C., Ordsall Lane, Salford. Nov. 7, 1934, Nos. 31984/34 and 21258 /35. [Class 103 (i)] Fluid-pressure brakes particularly for railway vehicles, controlled in accordance with the speed of the vehicle comprises a valve i between the driver's valve m and the train pipe, which closes when a certain train pipe pressure has been attained, and is controlled by a pressure which is proportional to the speed of the vehicle, a spring j and train pipe pressure acting on a diaphragm k. The brake described is a vacuum brake. Another valve p is also provided which connects a vacuum reservoir q to the train pipe when the speed has been reduced, in order to reduce the power of the brake application progressively. A compressor a is driven from a wheel of the vehicle and charges a reservoir c, the pressure in which acts on a piston g on the stem h of the valve i. The reservoir c is provided with a leak d so that pressure does not commence to build up till a definite speed has been attained. When the brakes are applied, the valve i is closed when train pipe vacuum has decreased by a certain amount and the brakes are applied with only a part of the maximum force available unless the speed is high in which case the pressure developed in the reservoir c holds open the valve i until a greater braking force has been exerted. The valve p is also controlled by the pressure in the reservoir c, the train pipe pressure on a diaphragm a and a spring u. If the speed has been high, the reduction in train pipe vacuum causes a sufficient pressure above the diaphragm s to open the valve p when the pressure in the reservoir c falls when the train slows down, and connects the vacuum reservoir q to the train pipe in order to reduce the brake pressure as the speed falls. The train pipe is exhausted by means of a check valve v.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3198434A GB447118A (en) | 1934-11-07 | 1934-11-07 | Improvements relating to the brake mechanism of railway vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3198434A GB447118A (en) | 1934-11-07 | 1934-11-07 | Improvements relating to the brake mechanism of railway vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB447118A true GB447118A (en) | 1936-05-07 |
Family
ID=10331299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3198434A Expired GB447118A (en) | 1934-11-07 | 1934-11-07 | Improvements relating to the brake mechanism of railway vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB447118A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220297651A1 (en) * | 2021-03-17 | 2022-09-22 | Volvo Truck Corporation | Braking arrangement for a vehicle |
-
1934
- 1934-11-07 GB GB3198434A patent/GB447118A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220297651A1 (en) * | 2021-03-17 | 2022-09-22 | Volvo Truck Corporation | Braking arrangement for a vehicle |
US11938915B2 (en) * | 2021-03-17 | 2024-03-26 | Volvo Truck Corporat on | Braking arrangement for a vehicle |
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