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 498
water outlet may be operatedsimultaneously by a rope control. By means of a ball checkvalve the water level remains constant and permits therequisite amount of air to enter to provide the proper airpiston. Pneumatic Elevators The use of air as a working medium in the cylinders ofpneumatic elevators…
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
