Units installed by Belt Railway, Chicago, on 77 crossover and lap and yard lead switches; tubular type heaters applied on practically all lead and body track switches, all switches equipped being No 9 with 16 1/2-ft points and 100-lb rail; single heating unit, 16 ft in length, installed under head of each stock rail; rating of heater units. (see also Ry Elec Engr v 30 n 2 Feb 1939 p 32-4)
154 electric switch heater units
Ry Signaling
Railway Signaling ; 32 , n 1, Part 1
1939
3 pages
Aufsatz (Zeitschrift)
Englisch
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Recommended Safety Instructions for Electric Switch Heater Type Winter Switch Protection Devices
British Library Conference Proceedings | 1995
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