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 468
oor. Inthis case a roller shutter door must be used, as it takesup the least possible amount of space when open and atthe same time affords satisfactory fire protection. Hinged fire doors are used under many conditions. Atthe top entrance to the chute a hinged door forms a verysimple and practical…
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
