Specifications covering: car-retarder system, electric motor switch operating mechanism, centralized traffic control system, centralized traffic control machine, electric lock, time release, interlocking lever circuit controller; signaling over spring switches. (see also Am. Ry. Assn. -- Proc., vol. 28, no. 1, Aug. 1930, pp. 57-142)


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    Title :

    Interlocking


    Additional title:

    Am. Ry. Assn. -- Signal Section Proc



    Publication date :

    1930


    Size :

    14 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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