Specifications covering: car-retarder system, electric motor switch operating mechanism, centralized traffic control system, centralized traffic control machine, electric lock, time release, interlocking lever circuit controller; signaling over spring switches. (see also Am. Ry. Assn. -- Proc., vol. 28, no. 1, Aug. 1930, pp. 57-142)
Interlocking
Am. Ry. Assn. -- Signal Section Proc
1930
14 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1930
Engineering Index Backfile | 1931
Engineering Index Backfile | 1930