GB752139A - Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards - Google Patents

Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards

Info

Publication number
GB752139A
GB752139A GB1472554A GB1472554A GB752139A GB 752139 A GB752139 A GB 752139A GB 1472554 A GB1472554 A GB 1472554A GB 1472554 A GB1472554 A GB 1472554A GB 752139 A GB752139 A GB 752139A
Authority
GB
United Kingdom
Prior art keywords
retarder
wagon
relay
track
valve
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
GB1472554A
Inventor
James Michael Howe
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB1472554A priority Critical patent/GB752139A/en
Publication of GB752139A publication Critical patent/GB752139A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
    • B61K7/02—Track brakes or retarding apparatus
    • B61K7/12—Track brakes or retarding apparatus electrically controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

752,139. Railway retarder control systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 17, 1955 [May 19, 1954], No. 14725/54. Class 103 (1). In retarder control systems for railway gravity-operated marshalling yards of the kind in which the speed of the wagons is detected by a radar transmitting and receiving horn H by which circuits controlling the application of the retarder bars R are controlled, in order that the radar horn H may not give a false signal by reflection off a wagon which is passing over the points P to a branch track controlled by a different retarder, a section TS of the branch track immediately in advance of the retarder R is made part of a circuit including a track relay TR so that the signal transmitted will only become operative when a wagon is actually in the respective branch track. When the track relay TR and thus the switching relay SR are energized, the output from the integrator Int which is fed from the radar device H is connected through front contact SR1 to the grid of amplifier valve V1. The output from valve V1 controls the grid voltage of cathode coupled valves V2 and V3 in such a.way that when the output potential from the integrator Int is sufficient the grid of the valve V3 takes over conduction and energizes a relay RL which may be used to control application of the retarder R by means not shown.
GB1472554A 1954-05-19 1954-05-19 Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards Expired GB752139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1472554A GB752139A (en) 1954-05-19 1954-05-19 Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1472554A GB752139A (en) 1954-05-19 1954-05-19 Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards

Publications (1)

Publication Number Publication Date
GB752139A true GB752139A (en) 1956-07-04

Family

ID=10046375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1472554A Expired GB752139A (en) 1954-05-19 1954-05-19 Improvements relating to the detection of wagon speeds in gravity operated railway marshalling yards

Country Status (1)

Country Link
GB (1) GB752139A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041449A (en) * 1958-11-17 1962-06-26 Acec Automatic braking control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041449A (en) * 1958-11-17 1962-06-26 Acec Automatic braking control system

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