. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . Motor Operated erecting or repair purposes, elevating liquids to permit si-phoning or pouring, elevating to platforms or balconies orbetween floors. The last case is a direct substitute for thefreight elevator and is used when a fixed elevator wouldnot be justified. Hand Operated placed so as to roll from side to side depending upon therequirements. As far as motive power is concerned the elevators maybe operated by hand or b
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . Motor Operated erecting or repair purposes, elevating liquids to permit si-phoning or pouring, elevating to platforms or balconies orbetween floors. The last case is a direct substitute for thefreight elevator and is used when a fixed elevator wouldnot be justified. Hand Operated placed so as to roll from side to side depending upon therequirements. As far as motive power is concerned the elevators maybe operated by hand or by a motor of some kind. Wherehigh lifts are necessary a motor drive may be found de- 494 ELEVATORS sirable. In general, the frequency of use and the cost ofhandling will determine whether it is best to use hand ormotor Revolv Type Portable Elevator For low rises where the elevator need not be transportedunder beams or low doorways, the guides may be in onepiece. For high rises they are usually hinged so that theymay be folded, thus reducing the headroom required for moving the machines from place to place and increasingmaterially the usefulness of the apparatus as a whole is made either revolving or non^
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
