Specification for time locks, time releases and drawbridge circuit controller. Notice for meeting Nov. 14-15, 1923, pp. 18-23, 4 figs: Specification for location and layout for way stations; typical plans for joint occupancy of signal stations by telegraph and telephone apparatus. Report of Committee III.
Power interlocking
Am. Ry. Assn. (Signal Section) -- Advance Notice
American Railway Association -- Meeting ; 1923 Interlocking
1923
15 pages
Conference paper
English
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