Primary battery for track circuits and operation of plant using semaphore signals equipped with electric lights.


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    Title :

    Automatic interlocking replaces mechanical plant at crossing


    Additional title:

    Ry Signalling


    Published in:

    Publication date :

    1933


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Automatic interlocking replaces crossing gates

    Engineering Index Backfile | 1937


    Automatic interlocking replaces mechanical plant

    Engineering Index Backfile | 1932


    Automatic plant replaces mechanical interlocking

    Engineering Index Backfile | 1937


    Automatic interlocking replaces gates at crossing

    Engineering Index Backfile | 1933


    Automatic interlocking replaces mechanical

    Engineering Index Backfile | 1936