GB847177A - Improvements to jointless railtrack electrical circuits - Google Patents

Improvements to jointless railtrack electrical circuits

Info

Publication number
GB847177A
GB847177A GB22082/58A GB2208258A GB847177A GB 847177 A GB847177 A GB 847177A GB 22082/58 A GB22082/58 A GB 22082/58A GB 2208258 A GB2208258 A GB 2208258A GB 847177 A GB847177 A GB 847177A
Authority
GB
United Kingdom
Prior art keywords
track
jointless
circuit
railtrack
electrical circuits
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
GB22082/58A
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.)
Compagnie de Signaux et dEntreprises Electriques SA
Original Assignee
Compagnie de Signaux et dEntreprises Electriques SA
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 Compagnie de Signaux et dEntreprises Electriques SA filed Critical Compagnie de Signaux et dEntreprises Electriques SA
Publication of GB847177A publication Critical patent/GB847177A/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
    • B61L1/187—Use of alternating current

Landscapes

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

Abstract

847,177. Railway signals. COMPAGNIE DE SIGNAUX ET D'ENTREPRISES ELECTRIQUES. July 9, 1958 [Aug. 30, 1957], No. 22082/58. Drawings to Specification. Class 105. A jointless-rail track circuit consists in a band pass filter cell having all its inductances constituted by the track itself and the track rails are connected so as to provide at the operating frequency a short circuit at each of the extremities of the track circuit. Such a short circuit is effected by means of a series resonant circuit connected across the rails at both extremities of the track circuit, the capacitance being provided to tune the secondary of the feed or receiver transformers to the operating frequency.
GB22082/58A 1957-08-30 1958-07-09 Improvements to jointless railtrack electrical circuits Expired GB847177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR847177X 1957-08-30

Publications (1)

Publication Number Publication Date
GB847177A true GB847177A (en) 1960-09-07

Family

ID=9313697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22082/58A Expired GB847177A (en) 1957-08-30 1958-07-09 Improvements to jointless railtrack electrical circuits

Country Status (1)

Country Link
GB (1) GB847177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153571A (en) * 1984-01-30 1985-08-21 Westinghouse Brake & Signal Track circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153571A (en) * 1984-01-30 1985-08-21 Westinghouse Brake & Signal Track circuit
US4641803A (en) * 1984-01-30 1987-02-10 Westinghouse Brake And Signal Company Limited Track circuit

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