GB447118A - Improvements relating to the brake mechanism of railway vehicles - Google Patents

Improvements relating to the brake mechanism of railway vehicles

Info

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
Application number
GB3198434A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gresham & Craven Ltd
Original Assignee
Gresham & Craven Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gresham & Craven Ltd filed Critical Gresham & Craven Ltd
Priority to GB3198434A priority Critical patent/GB447118A/en
Publication of GB447118A publication Critical patent/GB447118A/en
Expired legal-status Critical Current

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.
GB3198434A 1934-11-07 1934-11-07 Improvements relating to the brake mechanism of railway vehicles Expired GB447118A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220297651A1 (en) * 2021-03-17 2022-09-22 Volvo Truck Corporation Braking arrangement for a vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
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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