Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 168
596. MULTIPLE RING VALVE, forb enlarged valve area with small lift. … 597. DOUBLE-BEAT PUMP VALVE, Cor-I nish model. The upper seat is supported by across-bar, in which is fixed the guide-pin thatI carries the valve.
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
