. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . Figs. 156 and 157 vice, structural steel braces can be run from the outsideedges of the runway to the center post. The entire weightof the closed-center chute is supported by the post andcarried directly on a foundation under the post, no stress. Fig. 158 coming upon the floors of the building. This type ofchute occupies a minimum amount of floor space, is rea-sonable in first cost and can be readily rendered safe fromfire ha
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . Figs. 156 and 157 vice, structural steel braces can be run from the outsideedges of the runway to the center post. The entire weightof the closed-center chute is supported by the post andcarried directly on a foundation under the post, no stress. Fig. 158 coming upon the floors of the building. This type ofchute occupies a minimum amount of floor space, is rea-sonable in first cost and can be readily rendered safe fromfire hazard due to the floor openings. SPIRAL CHUTES AND SPROCKETS 461 Open-center spiral chutes (Fig. 157) are supported byhangers from the ceiling or on structural steel are also often carried on a central post having longradial steel arms upon which the runway proper is se-cured. This form (Fig. 158) is generally called an open-center-with-post spiral chute. Open center chutes requirea guardrail on each side of the runway. They occupyconsiderably more floor space than the closed center typeof the same capacity, but will accommodate a somewhatlarger package for the same width of runway. Fire doors are required at all openings where a spiralchute passes through floors. These doors should be held open by a fusible link which melts and allows the door to closepositively in the event of a fire. The vert
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
