A paper read before the Railway Signalling Club, Chicago. The paper is devoted chiefly to the less familiar history of the application of the track circuit in connection with electrical locking of interlocking machine levers, and an argument for this practice. (2200 w.)


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    Title :

    History of electric locking of railroad signals


    Additional title:

    R R Gaz


    Contributors:
    Spencer, V. (author)

    Published in:

    Publication date :

    1896


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Railroad train signals

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