Illustrated description of the system installed on the District Railway. The main feature is that currents extraneous to the signal system cannot affect the apparatus so as to cause a false indication of safety. (Serial. 1st part) (7500 w.) (No. 77138 A)


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    Title :

    Automatic signalling on the underground railways of London


    Additional title:

    Engng


    Published in:

    Publication date :

    1906


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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