Raymond, William Galt, 1859-1926, Raymond, William Galt, 1859-1926. cre · New York, J. Wiley & sons, inc · leaf 144
ack it governs. The blade is always ii8 SIGNALING to the right of an approaching train; if to the left, no attentionis paid to it because it governs movement in the opposite direction.H is the home signal, D the distant signal, and T the tower. Figure 6i is a standard home semaphore, so called… … Fig. 61 Fig. 63 Fia. £4 Fig. 65 an approaching train. The distance is not so great as to preventoperation from the same cabin, say, 1500 to 2000 feet. Thedistant signal is always in the same position as the correspondinghome signal, and is used to tell the engineman in advance whatinformation he…
Railroad engineering
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