GB660831A - Improvements relating to vacuum brake apparatus for railway and like vehicles - Google Patents

Improvements relating to vacuum brake apparatus for railway and like vehicles

Info

Publication number
GB660831A
GB660831A GB66349A GB66349A GB660831A GB 660831 A GB660831 A GB 660831A GB 66349 A GB66349 A GB 66349A GB 66349 A GB66349 A GB 66349A GB 660831 A GB660831 A GB 660831A
Authority
GB
United Kingdom
Prior art keywords
valve
vacuum
diaphragm
pressure
reservoir
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
GB66349A
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.)
GERALD CRANSTON MARSH
Gresham & Craven Ltd
Original Assignee
GERALD CRANSTON MARSH
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 GERALD CRANSTON MARSH, Gresham & Craven Ltd filed Critical GERALD CRANSTON MARSH
Priority to GB66349A priority Critical patent/GB660831A/en
Publication of GB660831A publication Critical patent/GB660831A/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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/465—Vacuum systems for railway vehicles

Abstract

660,831. Vacuum brakes. GRESHAM & CRAVEN, Ltd., and MARSH, G. C. Jan. 9, 1950 [Jan. 10, 1949], No. 663/49. Class 103 (i). [Also in Group XXVIII] Automatic control of the steam supply to an ejector g drawing air from a vehicle brake system through an automatic feed valve c which remains open below a vacuum less than twenty inches of mercury and closes for a vacuum of or above twenty inches mercury gauge in the system is effected by a governor valve i acting to prevent or allow the passage of steam to the ejector according to whether the vacuum in a reservoir d is about 25 inches or below 20 inches mercury gauge. The valve i is opened against a spring r by reservoir vacuum acting above a diaphragm v to allow access of vacuum through a pipe w to the underside of a diaphragm x to close a valve j in the steam supply line. On reduction of vacuum in the reservoir d the valve i closes, and a vent u is opened allowing access of atmospheric air below the diaphragm x to open the valve j. The automatic feed valve c is opened by the pressure of a spring n and is closed by differential pressure across a diaphragm o ; the pressure at the upper side being that of the train pipe a except during a brake application when the valve c is isolated from the pipe a by the driver's valve b, and the pressure at the lower side being atmospheric except in the full release position of the valve b when it is equal to the train pipe pressure thereby putting the diaphragm o in equilibrium. In a modification a hand-controlled supplementary ejector draws between the valves c and b to exhaust the brake system when desired.
GB66349A 1949-01-10 1949-01-10 Improvements relating to vacuum brake apparatus for railway and like vehicles Expired GB660831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB66349A GB660831A (en) 1949-01-10 1949-01-10 Improvements relating to vacuum brake apparatus for railway and like vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB66349A GB660831A (en) 1949-01-10 1949-01-10 Improvements relating to vacuum brake apparatus for railway and like vehicles

Publications (1)

Publication Number Publication Date
GB660831A true GB660831A (en) 1951-11-14

Family

ID=9708328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB66349A Expired GB660831A (en) 1949-01-10 1949-01-10 Improvements relating to vacuum brake apparatus for railway and like vehicles

Country Status (1)

Country Link
GB (1) GB660831A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943949C (en) * 1953-10-15 1956-06-07 Gresham & Craven Ltd Suction air braking device for rail vehicles
DE1157252B (en) * 1959-07-15 1963-11-14 Gresham & Craven Ltd Vacuum braking device, especially for rail vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943949C (en) * 1953-10-15 1956-06-07 Gresham & Craven Ltd Suction air braking device for rail vehicles
DE1157252B (en) * 1959-07-15 1963-11-14 Gresham & Craven Ltd Vacuum braking device, especially for rail vehicles

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