Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 230
ies, numbers over 200represent engine companies, numbers preceded by S rep-resent fire insurance salvage corps, numbers 10 and 11represent deputy chiefs, C represents the chief of the depart-ment, 6 represents a water tower, SI represents a search-light engine and numbers preceded by FB represent… … i 2l6 TELEGRAPH ENGINEERING the second alarm, etc., the sequence of the numbers of eachgroup being the order in which the companies are expectedto arrive at the signal box. These assignments are alsoshown in Fig. i6 by the light dotted lines marked I, II,III and IV which are drawn to include the…
Telegraph
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