GB618543A - Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles - Google Patents

Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles

Info

Publication number
GB618543A
GB618543A GB2716846A GB2716846A GB618543A GB 618543 A GB618543 A GB 618543A GB 2716846 A GB2716846 A GB 2716846A GB 2716846 A GB2716846 A GB 2716846A GB 618543 A GB618543 A GB 618543A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
piston
subjected
brake
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
GB2716846A
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co 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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB2716846A priority Critical patent/GB618543A/en
Publication of GB618543A publication Critical patent/GB618543A/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
    • B60T8/18—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 vehicle weight or load, e.g. load distribution
    • B60T8/1893—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 vehicle weight or load, e.g. load distribution especially adapted for railway vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

618,543. Fluid-actuated valves. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., SIMMONS, A. W., and KERSHAW, J. W. G. Sept. 10, 1946, No. 27168. [Class 135] [Also in Group XXXIV] In compressed air braking apparatus for railway vehicles comprising a relay valve in which an inlet and exhaust valve assembly for the brake cylinder is operated by the thrust of three movable abutments, one subjected to a pressure dependent upon the setting of a driver's brake valve, a second subjected to a pressure dependent upon the speed or load of the vehicle, and the third subjected to the pressure in the brake cylinder,- the thrust of the second abutment is transmitted to the valve assembly through an adjustable mechanism. As shown, the relay valve has a port 18 communicating with the brake cylinder and connected, through an inlet valve member 14, with a supply connection 17. An exhaust port 7, controlled by a valve member 12, movable with valve member 14, is formed in 'the upper end 4 of a hollow piston whose interior connects, through ports 9, 11, with the atmosphere. The lower end 5 of the piston is subjected to the pressure from the driver's brake valve, and a further controlling pressure, e.g., a pressure derived from that supplied to the relay valve through the driver's valve, but modified in accordance with conditions such as speed or load of the vehicle, is applied, through a port 21, to a piston 20 connected through levers 25, pivoted at 26, and thrust pins 23 to a flange or lugs 22 on the hollow piston. Rollers 24 on the levers engage the thrust pins and rollers 27 coact with the piston 20. To vary the controlling effect of the pressure acting on the piston 20, the spindles of the rollers 27 may be inserted in different holes in the levers.
GB2716846A 1946-09-10 1946-09-10 Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles Expired GB618543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2716846A GB618543A (en) 1946-09-10 1946-09-10 Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2716846A GB618543A (en) 1946-09-10 1946-09-10 Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles

Publications (1)

Publication Number Publication Date
GB618543A true GB618543A (en) 1949-02-23

Family

ID=10255302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2716846A Expired GB618543A (en) 1946-09-10 1946-09-10 Improvements relating to relay valves applicable to compressed air braking apparatusfor railway vehicles

Country Status (1)

Country Link
GB (1) GB618543A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1232488B (en) * 1959-06-26 1967-01-12 Italiana Magneti Marelli Soc P Control valve for dual-line compressed air brake systems in trailer vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1232488B (en) * 1959-06-26 1967-01-12 Italiana Magneti Marelli Soc P Control valve for dual-line compressed air brake systems in trailer vehicles

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