Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 238
th valve open. On the side of the valve-tube is a projection D. When the valve is open, LAMPS. 227 the arm B is at right angles to this projection. The outside cistern is so arranged interiorly thatthe cistern will not enter unless the valve-arrn is in a line with the projection D, and…
Mechanical engineering -- Dictionaries
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