. The miller, millwright and millfurnisher. C C, in which the air should be kept at about 40 poundsper square inch. GRAIN ELE VA TORS. 459 Grain Elevators.—Figs. 312 and 313 show sectional end and sideviews of a large grain elevator. The ground dimensions of the building are330 feet by 86 feet, and the height is 136 feet. The -building contains 264compartments, of which 260 are bins for storing grain, and the other 4afford passage for the stairways, belts, etc. The inside dimensions of each bin are 9 feet by 9 feet square and 56feet high, including hopper. Below the bin hoppers is a story 16 f
. The miller, millwright and millfurnisher. C C, in which the air should be kept at about 40 poundsper square inch. GRAIN ELE VA TORS. 459 Grain Elevators.—Figs. 312 and 313 show sectional end and sideviews of a large grain elevator. The ground dimensions of the building are330 feet by 86 feet, and the height is 136 feet. The -building contains 264compartments, of which 260 are bins for storing grain, and the other 4afford passage for the stairways, belts, etc. The inside dimensions of each bin are 9 feet by 9 feet square and 56feet high, including hopper. Below the bin hoppers is a story 16 feet highand extending over the whole ground floor of building. Through one sideof this and about four feet below the floor is the railroad track, the carscoming in at one end of the building and going out on the other. The carsare unloaded by means of steam shovels, driven by shaft b, by which thegrain is scraped out of the cars and dropped into the sinks c. There areeleven sinks and as many cars can be unloaded at once. In the bottom of. Fig. 311. each sink are iron elevator boots in tanks of wrought iron calked so as tobe water-tight. The elevator boots are provided with slides to regulate thefeed, which can be operated from the floor above. The eleven elevators are marked e. The elevator head pulleys are 72inches diameter and 21 inches face, and the boot pulleys 24 inches diam-eter and 21 face. These boot pulleys are hung in universal bearings, whichmay be lowered at pleasure in order to tighten the belts. The elevator belts are 4-ply rubber, 20 inches wide, having on them 18-inch elevator buckets, very strong, and placed twelve inches apart. The line-shaft, e, in the attic rests in heavy universal boxes, and isprovided with expansion couplings. There are eleven sleeves on this shaft,with babbitt bearings and spiral coupling jaws at one end. These sleevesare fastened in no way to the shaft, but have an elevator head-pulley keyedto each one. Fastened on the shaft with feath
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectflourmi, bookyear1882
