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 299
Racking Trolley Mounted on Hand-Operated Single Circular Track for Rotating Overhead Traveling Crane I-Beam Crane … Two-Way Switch Turntable ^l€^
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.