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 297
OVERHEAD TRACKAGE 291 the power to the trolley through a gear train having oneor more speed reductions. The pendant hand chain ispulled downward on either side to propel the trolley ineither direction. Any of the various types of hoists maybe suspended from this type of trolley. Power-operated…
Hoisting machinery · Conveying machinery
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