GB222976A - Improvements in or relating to railway signalling - Google Patents

Improvements in or relating to railway signalling

Info

Publication number
GB222976A
GB222976A GB18185/23A GB1818523A GB222976A GB 222976 A GB222976 A GB 222976A GB 18185/23 A GB18185/23 A GB 18185/23A GB 1818523 A GB1818523 A GB 1818523A GB 222976 A GB222976 A GB 222976A
Authority
GB
United Kingdom
Prior art keywords
trap
point
rail
track circuit
wheel running
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
GB18185/23A
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.)
British Power Railway Signal Co Ltd
Original Assignee
British Power Railway Signal 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 British Power Railway Signal Co Ltd filed Critical British Power Railway Signal Co Ltd
Priority to GB18185/23A priority Critical patent/GB222976A/en
Publication of GB222976A publication Critical patent/GB222976A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/185—Use of direct current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

222,976. British Power Railway Signal Co., Ltd., and Irving, E. C. July 13,1923. Electrical systems, automatic.-In a block system which includes a trap-point or derail, the track circuit is arranged to include a rigid frangible member fixed at the trap-point so as to be broken by the first wheel running back through the trap-point. Fig. 2 shows the device 15, which may consist of a cast iron arm of small section, secured to the fixed rail 11 of the trappoint, connected in series with the rail 4 and the fixed rail 11 by wires 14, 16. Connections are made in any usual manner to the device. A wheel running over the arms of the device fractures it and opens the track circuit.
GB18185/23A 1923-07-13 1923-07-13 Improvements in or relating to railway signalling Expired GB222976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18185/23A GB222976A (en) 1923-07-13 1923-07-13 Improvements in or relating to railway signalling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18185/23A GB222976A (en) 1923-07-13 1923-07-13 Improvements in or relating to railway signalling

Publications (1)

Publication Number Publication Date
GB222976A true GB222976A (en) 1924-10-13

Family

ID=10108114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18185/23A Expired GB222976A (en) 1923-07-13 1923-07-13 Improvements in or relating to railway signalling

Country Status (1)

Country Link
GB (1) GB222976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557254A (en) * 1946-07-08 1951-06-19 Ohio Brass Co Warning signal for railroads
CN1057146C (en) * 1994-05-06 2000-10-04 卡明斯发动机公司 High pressure pump for fuel injection systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557254A (en) * 1946-07-08 1951-06-19 Ohio Brass Co Warning signal for railroads
CN1057146C (en) * 1994-05-06 2000-10-04 卡明斯发动机公司 High pressure pump for fuel injection systems

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