Bonding of oil sidings -- steam railroad territory; automatic block signal system; possibility of improper signal operation resulting from use of rail fissure detector cars and recommended protective measures; requisites for minimizing effect of lightning on track circuits; protection against lightning; tractive armature d-c polarized relay; electric motor semaphore signal; time element relay. (Signal Sec)


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    Title :

    Committee IV -- Automatic block signaling


    Additional title:

    Assn Am Railroads -- Advance Reports


    Conference:

    Association of American Railroads -- Meeting ; 1941 Automatic block



    Publication date :

    1941


    Size :

    39 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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