Installation of spring switch equipped with mechanical facing-point lock on Pennsylvania Railroad at Duff, Pa; special signal protection; track and signal plan of springswitch layout; trailing operation; hand operation.


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    Title :

    Spring switch with lock


    Additional title:

    Ry Signaling


    Contributors:

    Published in:

    Publication date :

    1933


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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