GB1376625A - Air brake distributors for use in railway locomotives and rolling stock - Google Patents

Air brake distributors for use in railway locomotives and rolling stock

Info

Publication number
GB1376625A
GB1376625A GB4964471A GB4964471A GB1376625A GB 1376625 A GB1376625 A GB 1376625A GB 4964471 A GB4964471 A GB 4964471A GB 4964471 A GB4964471 A GB 4964471A GB 1376625 A GB1376625 A GB 1376625A
Authority
GB
United Kingdom
Prior art keywords
passage
stage
air pressure
air
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
GB4964471A
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.)
Davies and Metcalfe Ltd
Original Assignee
Davies and Metcalfe 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 Davies and Metcalfe Ltd filed Critical Davies and Metcalfe Ltd
Priority to GB4964471A priority Critical patent/GB1376625A/en
Priority to IN524/CAL/1974A priority patent/IN141319B/en
Publication of GB1376625A publication Critical patent/GB1376625A/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
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/54—Other control devices or valves characterised by definite functions for controlling exhaust from triple valve or from brake cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

1376625 Rail vehicle compressed air braking systems; valve arrangements DAVIES & METCALFE Ltd 24 Oct 1972 [26 Oct 1971] 49644/71 Heading F2F An air brake distributer 2 for railway locomotives and rolling stock is connected by a pipe 6 to a brake cylinder 8 and incorporates a twostage air exhaust choke 30 for controlling the rate at which the brake cylinder air pressure drops upon brake release via a passage 28: the choke 30 comprises a chamber 32 with outlets 34, 36 to atmosphere and a first choke stage 38 in the passage 28 and a second choke stage 40 with a smaller orifice than stage 38 and urged against a projection 28a by a spring 42. The pipe 6 is connected to a passage 4 in the distributer 2 which leads to chambers 10, 12, 14, 16 containing diaphragms 18, 20, 22, 24. Diaphragm 18 acts on a spindle 26 of a sealing valve which is opened by air pressure in cylinder 8 to connect at least one reservoir to a brake pipe when air pressure in chamber 10 falls below a predetermined level (say 1À5-2À5 p.s.i.g.). A hollow spindle 24A of a main valve communicates the chamber 14 connected to passage 28 During brake release air initially flows to atmosphere mainly via stage 38 and outlet 34 but also via passage 36, and stage 40 is held away from projection 28a by air pressure in passage 28: when this air pressure drops below a predetermined level (say 5 p.s.i.g.) stage 40 abuts projection 28a and venting is wholly via passage 36. The time taken to drop to the first mentioned predetermined pressure at which the sealing valve opens is thereby increased. The orifices in the first and second stages are preferably coaxial. (For Figures see next page.)
GB4964471A 1971-10-26 1971-10-26 Air brake distributors for use in railway locomotives and rolling stock Expired GB1376625A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4964471A GB1376625A (en) 1971-10-26 1971-10-26 Air brake distributors for use in railway locomotives and rolling stock
IN524/CAL/1974A IN141319B (en) 1971-10-26 1974-03-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4964471A GB1376625A (en) 1971-10-26 1971-10-26 Air brake distributors for use in railway locomotives and rolling stock

Publications (1)

Publication Number Publication Date
GB1376625A true GB1376625A (en) 1974-12-11

Family

ID=10453059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4964471A Expired GB1376625A (en) 1971-10-26 1971-10-26 Air brake distributors for use in railway locomotives and rolling stock

Country Status (2)

Country Link
GB (1) GB1376625A (en)
IN (1) IN141319B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128280A (en) * 1982-10-05 1984-04-26 Dewandre Co Ltd C Improved brake valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128280A (en) * 1982-10-05 1984-04-26 Dewandre Co Ltd C Improved brake valve

Also Published As

Publication number Publication date
IN141319B (en) 1977-02-12

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years