GB954295A - Improvements relating to railway block signalling - Google Patents

Improvements relating to railway block signalling

Info

Publication number
GB954295A
GB954295A GB2831459A GB2831459A GB954295A GB 954295 A GB954295 A GB 954295A GB 2831459 A GB2831459 A GB 2831459A GB 2831459 A GB2831459 A GB 2831459A GB 954295 A GB954295 A GB 954295A
Authority
GB
United Kingdom
Prior art keywords
relay
point
picks
releases
operator
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
GB2831459A
Inventor
Charles George Roberts
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.)
Tyer and Co Ltd
Original Assignee
Tyer and 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 Tyer and Co Ltd filed Critical Tyer and Co Ltd
Priority to GB2831459A priority Critical patent/GB954295A/en
Publication of GB954295A publication Critical patent/GB954295A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
    • B61L23/12—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only partly operated by train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/22—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in two directions over the same pair of rails
    • B61L23/24—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in two directions over the same pair of rails using token systems, e.g. train staffs, tablets

Landscapes

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

Abstract

954,295. Block signalling systems. TYER & CO. Ltd. July 29, 1960 [Aug. 19, 1959], No. 28314/59. Heading B7N. In a block instrument signalling system using tokens for controlling traffic over a single line route, means are provided for preventing the extraction of a token from the instrument at the departure end of the block when standing currents from an extraneous source are present on the control wires connecting the instruments at the departure and arrival ends of the block. Assume a train has to be passed from a departure point A to an arrival point B, the operator at point A operates switch PA and applies battery XA1 to the control lines joining the instruments at the ends of the block. Relay ZB1 picks up and operates relay BB and the instrument at B indicates " line blocked." The operator at B, operates switch PB if he can accept the train, whereby relay ZB1 releases and relay CB picks up to hold BB. Indicator 1A at point A now indicates no current and the operator at A releases PA. The operator at B releases switch PB, relay BB releases but CB remains energized and the instrument displays " Train coming from A." The operator at B again operates switch PB whereby via a front contact of relay CB and a back contact of relay BB battery XB2 is applied to line and picks up both relay ZA1 and relay ZA2 at point A. Pick up of these relays energizes relays BA and DA and on release of switch PB at B relay BA releases but relay DA is held by a latch circuit including a front contact of relay PA and a back contact of BA. An electromagnetic device ML at point A is now energized to release a token, after which the instrument at A registers "Train going to B." In the event of extraneous current appearing on the control lines either relay ZB1 picks up to prevent the setting up of the " Train coming from A," condition or ZA1 picks up to prevent the establishment of a latch circuit for relay DA.
GB2831459A 1959-08-19 1959-08-19 Improvements relating to railway block signalling Expired GB954295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2831459A GB954295A (en) 1959-08-19 1959-08-19 Improvements relating to railway block signalling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2831459A GB954295A (en) 1959-08-19 1959-08-19 Improvements relating to railway block signalling

Publications (1)

Publication Number Publication Date
GB954295A true GB954295A (en) 1964-04-02

Family

ID=10273681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2831459A Expired GB954295A (en) 1959-08-19 1959-08-19 Improvements relating to railway block signalling

Country Status (1)

Country Link
GB (1) GB954295A (en)

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