Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 85
74 STEAM POWER. 250. WING THROTTLE VALVE, or ButterflyThrottle, operated by direct connection with a gov-ernor. … 251. MULTIPLE PORT PISTON THROTTLEVALVE.—A perfectly balanced valve with throughconnecting rod.
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.