Installation by Boston and Albany Railroad at its now station in Springfield, Mass., centralizes control of all switches and signals; details of interlocking machine, switches, signal, track circuits, track and signal indicator, telephone service, and power supply. (See also Am. Soc. Mech. Engrs. -- advance paper for meeting Oct. 1 5 pp., 9 figs)
Electric interlocking system
Ry. Signalling
Railway Signaling ; 21 , n 11
1928
5 pages
14 Figs.
Article (Journal)
English
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Engineering Index Backfile | 1928
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Electric interlocking apparatus
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