GB712596A - Improvements in and relating to control devices for compressed air brakes for railway vehicles - Google Patents

Improvements in and relating to control devices for compressed air brakes for railway vehicles

Info

Publication number
GB712596A
GB712596A GB325642/52A GB32564252A GB712596A GB 712596 A GB712596 A GB 712596A GB 325642/52 A GB325642/52 A GB 325642/52A GB 32564252 A GB32564252 A GB 32564252A GB 712596 A GB712596 A GB 712596A
Authority
GB
United Kingdom
Prior art keywords
chamber
passage
valve
compressed air
main pipe
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
GB325642/52A
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.)
Ateliers des Charmilles SA
Original Assignee
Ateliers des Charmilles SA
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 Ateliers des Charmilles SA filed Critical Ateliers des Charmilles SA
Publication of GB712596A publication Critical patent/GB712596A/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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/24—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by three fluid pressures
    • B60T15/30—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by three fluid pressures with a quick braking action
    • B60T15/302—Railway control or brake valves with evacuation of air to a reservoir, to the atmosphere or to the brake cylinder
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/42—Other control devices or valves characterised by definite functions with a quick braking action, i.e. with accelerating valves actuated by brake-pipe pressure variation

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

712,596. Compressed air brake systems. ATELIERS DES CHARMILLES SOC. ANON. Dec. 23, 1952 [Jan. 8, 1952], No. 32564/52. Class 103(1) In a distributer valve assembly for compressed air brakes for railway vehicles special provision is made to prevent the accelerating chamber 6 being reconnected to the main pipe H to produce further undesirable pressure reductions after the initial braking impulse has taken place. The accelerating valve unit, as shown at B, comprises a hollow central member 1 which, as a result of main pipe and control reservoir pressures acting above and below a diaphragm 2 causes the valve 12 to be lifted to connect the main pipe H to the chamber 6, or connects the chamber 6 through the central passage 3 to atmosphere by chamber 8 and passage 15. A slidable piston 17 in the chamber 8 below the lower end of member 1 has an upper face acting as a valve seat to seal off the passage 3 and a lower face subject to brake cylinder pressure through passage 16. The piston 17 is thus kept pressed against the valve 11 to prevent emptying of the chamber by the brake cylinder pressure acting below until the brake cylinder pressure falls to about 0.2 to 0.3 kg. per square centimetre, when the pressure on the upper surface becomes the greater.
GB325642/52A 1952-01-08 1952-12-23 Improvements in and relating to control devices for compressed air brakes for railway vehicles Expired GB712596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH298370T 1952-01-08

Publications (1)

Publication Number Publication Date
GB712596A true GB712596A (en) 1954-07-28

Family

ID=4489935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB325642/52A Expired GB712596A (en) 1952-01-08 1952-12-23 Improvements in and relating to control devices for compressed air brakes for railway vehicles

Country Status (3)

Country Link
BE (1) BE516604A (en)
CH (1) CH298370A (en)
GB (1) GB712596A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836466A (en) * 1955-08-15 1958-05-27 Westinghouse Air Brake Co Graduated release type brake controlling valve with improved control reservoir charging control
US2913282A (en) * 1956-07-19 1959-11-17 Westinghouse Air Brake Co Improved service, charging and quick service control valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836466A (en) * 1955-08-15 1958-05-27 Westinghouse Air Brake Co Graduated release type brake controlling valve with improved control reservoir charging control
US2913282A (en) * 1956-07-19 1959-11-17 Westinghouse Air Brake Co Improved service, charging and quick service control valve

Also Published As

Publication number Publication date
BE516604A (en)
CH298370A (en) 1954-04-30

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