Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 280
a precaution against accidents, and to give notice of the approach of the engine, a steam whistlah is attached to the top of the fire-box, and communicates with the steam within by a short pipe, pro-vided with a stop-cock. The internal construction of the whistle is such, that when the stop-cock… … if=^ :3ra Behtid, and at the lowest extremity of the fire-box, is situated the blow-off cock I, by which the boilermay be emptied of water when required ; and, for the piu-pose of cleansing it of the accumulation ofsediment which is constantly being formed in it when the engine is in operation, it…
Mechanical engineering · Mechanics · Engineering
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