Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 217
nders rotate aboutthe: crank and the air is thus successively admitted to thecylinders or exhausted from them through ports in thecrank itself; this eliminates the need of a special valvemechanism. This hoist may be operated in either direction,the; air supply being controlled by a self-centering…
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
