GB819805A - Improvements in decoding signal impulses for actuating a railway signalling track circuit relay - Google Patents

Improvements in decoding signal impulses for actuating a railway signalling track circuit relay

Info

Publication number
GB819805A
GB819805A GB298656A GB298656A GB819805A GB 819805 A GB819805 A GB 819805A GB 298656 A GB298656 A GB 298656A GB 298656 A GB298656 A GB 298656A GB 819805 A GB819805 A GB 819805A
Authority
GB
United Kingdom
Prior art keywords
track circuit
rectifier
actuating
output
signal impulses
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
GB298656A
Inventor
Albert Maurice Ballereaud
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
Priority to GB298656A priority Critical patent/GB819805A/en
Publication of GB819805A publication Critical patent/GB819805A/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 vehicle train, e.g. pedals
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/188—Use of coded current
    • 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 vehicle trains
    • B61L23/08—Control, warning, or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only
    • B61L23/14—Control, warning, or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only automatically operated
    • B61L23/16—Track circuits specially adapted for section blocking
    • B61L23/168—Track circuits specially adapted for section blocking using coded current

Abstract

819,805. Railway signalling systems. COMPAGNIE DE SIGNAUX ET D'ENTERPRISES ELECTRIQUES. Jan. 30, 1956, No. 2986/56. Class 105. Signal impulses of short trains of carrier waves, e.g. of musical frequency from a railway track circuit are rectified in a rectifier 11, the output of which after amplification in an amplifier A is fed to an impulse-frequency-tuned transformer 16, the alternating current output of which after filtering through a pass filter 17 is rectified in a rectifier 18 and the D.C. output from the rectifier 18 is fed to the direct current track relay 10. The input impulses may be filtered by a carrier frequency pass filter 12. The amplifier A may be an electronic valve or a transistor. French Specification 1,039,741 is referred to.
GB298656A 1956-01-30 1956-01-30 Improvements in decoding signal impulses for actuating a railway signalling track circuit relay Expired GB819805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB298656A GB819805A (en) 1956-01-30 1956-01-30 Improvements in decoding signal impulses for actuating a railway signalling track circuit relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB298656A GB819805A (en) 1956-01-30 1956-01-30 Improvements in decoding signal impulses for actuating a railway signalling track circuit relay

Publications (1)

Publication Number Publication Date
GB819805A true GB819805A (en) 1959-09-09

Family

ID=9749757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB298656A Expired GB819805A (en) 1956-01-30 1956-01-30 Improvements in decoding signal impulses for actuating a railway signalling track circuit relay

Country Status (1)

Country Link
GB (1) GB819805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128804B (en) * 1960-05-17 1962-04-26 Hein Lehmann Ag Steep conveyor with an additional carrier belt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128804B (en) * 1960-05-17 1962-04-26 Hein Lehmann Ag Steep conveyor with an additional carrier belt

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