. Electric railway journal . Mesaba Railway—View of Motor-Generator Sets andSwitchboard Gallery into at 750 volts. Both interior and exterior viewsof this substation are shown in the illustrations. SIGNAL SYSTEMA complete installation of the Simmen system of rail-way signaling has been installed on this line. The dis-patcher set includes a nine-lever board, interlocked andequipped with time and location recording mechanismand record sheets such as have been described in the 72 ELECTRIC RAILWAY JOURNAL [Vol. XLIII, No. 2. Electric Railway Journal. Six telephone dispatcherlines are also con
. Electric railway journal . Mesaba Railway—View of Motor-Generator Sets andSwitchboard Gallery into at 750 volts. Both interior and exterior viewsof this substation are shown in the illustrations. SIGNAL SYSTEMA complete installation of the Simmen system of rail-way signaling has been installed on this line. The dis-patcher set includes a nine-lever board, interlocked andequipped with time and location recording mechanismand record sheets such as have been described in the 72 ELECTRIC RAILWAY JOURNAL [Vol. XLIII, No. 2. Electric Railway Journal. Six telephone dispatcherlines are also connected into the board, and each lineis equipped with a bell of a different tone instead of theusual drop. The third-rail installations on this 35-mile line pro-vide for a block approximately 6 miles in length, with. Mesaba Railway—Exterior of Chisholm Substation home and distant rails protecting each siding. Thethird-rail locations were also selected with a view toeliminating difficulties which might arise through drift-ing snow. The method of installing the third-rails con-forms to the standards employed on the Indianapolis &Cincinnati Traction line, as well as the Nashville-Galla-tin Interurban line. Certain refinements in the opera-tion of this signal system, however, have been included. Probably the most important of these additions to thesystem is the directional movement protection, which is
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