Panel type control machine uses thumb type turn and push levers; turn or signal lever completes route check network, and lights exit lamp on track diagram, and lever is pushed to clear signal; plan shows track layouts and signals of entire new interlocking.


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    Title :

    Pennsylvania railroad installs large modern interlocking at passenger station in Philadelphia


    Additional title:

    Ry Signaling Communications


    Published in:

    Publication date :

    1952


    Size :

    5 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English