For operation of electropneumatic interlocking following essential elements are necessary: supply of compressed air at pressure of from 50 to 100 lb. per sq. in.; supply of current from 12 to 16 volts, usually furnished from storage battery; interlocking machine for controlling various units; switch and signal operating mechanisms with their controlling and indicating circuits; miscellaneous units of special nature due to local conditions, such as smashboards at drawbridge, train stops, etc.; 321 questions on electropneumatic interlocking.


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    Title :

    Electro-pneumatic interlocking (chapt18) of American railway signaling principles and practices


    Additional title:

    Electro-Pneumatic Interlocking American Railway Signaling Principles Practices



    Publication date :

    1930


    Size :

    69 pages


    Remarks:

    33 Figs.


    Type of media :

    Book


    Type of material :

    Print


    Language :

    English