. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . as to minimize the stresses appli^°througheTther a single gear and pinion, or through due to starting a heavy load. The device usually consists a gear train; or the triple-purchase type. of a series of cone or wedge shaped friction blocks secured The single-purchase hand-power winch is designed to to the side of the gear on the windmg-drum shaft and apply the power by means of a pinion mounted, on the aligned with a correspon
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . as to minimize the stresses appli^°througheTther a single gear and pinion, or through due to starting a heavy load. The device usually consists a gear train; or the triple-purchase type. of a series of cone or wedge shaped friction blocks secured The single-purchase hand-power winch is designed to to the side of the gear on the windmg-drum shaft and apply the power by means of a pinion mounted, on the aligned with a corresponding recess or groove on the ad- 295 Hand Winches Hand-operated winches are used on small hand-powerderricks, jib cranes and pillar cranes; on other materialhandling machines of light capacity; or as an independenthoisting or haulage apparatus. They are made with asingle-drum; a double or two-part drum on a single shaft;or with two separate drums on independent shafts. Theymay be of the single-purchase type—power applied througha single gear and pinion;-of the worm gear type—a typeof single-purchase; of the double-purchase type—power 296 HOISTING MACHINERY.
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
