Feb. 10: Descriptive details of underground electric railway designed for accelerating conveyance of letters and parcels and contributing to reduction of surface street traffic; novel method of automatically operating driverless trains; 6600-volt, 3-phase supply converted to direct current at 440 volts; operation of track circuiting system. Feb. 17: Novel method of automatically operating driverless trains; railway extends for 6 1/2 miles and is served by eight underground stations; trains are capable of reaching speed of over 30 m.p.h.; each car is driven by two 22-hp. series interpole traction motors operating through single-reduction spur gearing enclosed in aluminum case; both conveyors and bag elevators are push-button controlled. (See also Elec. Rev vol. 102, nos. 2620 and 2621, and 17, Feb. 10 pp. 224-228 and 271-276, 15 figs; Elecn., vol. 100, nos. 2593, 2594 and 2596, Feb. 10 and 17 and Mar. 2, 1928, pp. 149-151, 181-182 and 245, 8 figs.; Elec. Engr. of Australia, vol. 5, no. 1, Apr. 16, 1928, pp. 17-18, 1 fig.; Post Office Elec. Engrs.' Jl., vol. 21, part 2, July 1928, pp. 147-154, 6 figs.; Engineer, vol. 145, no. 3761, Feb. 10, 1928, pp. 153-156, 17 figs., partly on supp. plate; Ry. Engr., vol. 49, no. 579, Apr. 1928, pp. 145-152 and 156, 16 figs.; Ry. Gaz., vol. 48, no. 6, Feb. 10, 1928, pp. 165-174, 17 figs.; Elec. Ry. and Tramway Jl., vol. 58, no. 1438, Feb. 10, 1928, pp. 75-79, 6 figs.; Times Trade and Eng. Supp., vol. 21, no. 501, Feb. 11, 1928, p. 531, 1 fig.; Elec. Times, vol. 78, no. 1894, Feb. 9, 1928, pp. 196-198, 5 figs)


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    Title :

    The post office (London) railways


    Additional title:

    Tramway Ry. World


    Published in:

    Publication date :

    1928


    Size :

    7 pages


    Remarks:

    7 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    The post office (London) railways

    Engineering Index Backfile | 1928


    The post office (London) railways

    Engineering Index Backfile | 1928


    The post office (London) railways

    Engineering Index Backfile | 1928


    The post office (London) railways

    Engineering Index Backfile | 1928


    The post office (London) railways

    Engineering Index Backfile | 1928