Installation by Boston and Albany Railroad at its new station in Springfield, Mass., centralizes control of all switches and signals; interlocking machine consists of 248-lever frame with 185 working levers controlling 77 signals, 33 single switches, 17 movable-point frogs, 34 double slip switches, 1 check lock lever and 1 derail; switches; signals; track circuits; track and signal indicator; telephone service; power supply.
Electric interlocking system
Railroads (ASME Trans)
1928
5 pages
9 Figs.
Aufsatz (Zeitschrift)
Englisch
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