Token instrument is apparatus used for electrically controlling issue to driver of train of tangible and portable token, such token being authority to occupy particular single-line section to which it applied; three examples of instruments using simpler method of manipulation are respectively Tyers' no. 6 tablet instrument, modified form of Webb and Thompson's staff instrument, and key token instrument. Paper read before Instn. Ry. Signal Engrs.


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    Title :

    Token instruments and their use in securing safety in single-line working


    Additional title:

    Ry. Gaz


    Contributors:
    Leake, F.W. (author)

    Published in:

    Publication date :

    1929


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English