. Illustrated catalogue and general description of improved machine tools for working metal . VERTICAL SHAFT.—With Step and Driving Pulleys. This plate shows the method of conveying power from a horizontal to avertical shaft by means of a belt, and one carrier so adjusted as to distribute thepulling strain through the entire width of the belt. In this way power may bedistributed through each story of a building without belts running through thefloors. The shaft, coming from an adjoining building, is 5 in diameter, withdriving-pulley 48 in diameter, and conveys 150 horse-power through a 2o-inc1
. Illustrated catalogue and general description of improved machine tools for working metal . VERTICAL SHAFT.—With Step and Driving Pulleys. This plate shows the method of conveying power from a horizontal to avertical shaft by means of a belt, and one carrier so adjusted as to distribute thepulling strain through the entire width of the belt. In this way power may bedistributed through each story of a building without belts running through thefloors. The shaft, coming from an adjoining building, is 5 in diameter, withdriving-pulley 48 in diameter, and conveys 150 horse-power through a 2o-inc1idouble belt to the vertical shaft, which makes 200 revolutions per 330 Wm. Sellers & Co., Incorporated, Philadelphia, Pa. tution of iron for wood as a material for pulleys, and the capacity to do so skil-fully and inexpensively, was justly considered as one of the great strides in theart. A properly proportioned and correctly finished iron pulley has, accidentsexcepted, a life of reliable usefulness that is practically without limit. No othermaterial has the same capacity for resisting wear, andis so little affected by changes in atmospheric condi-tions, and no other pulle)^ is so graceful in appearanceand action, and presents in revolving so small a surfaceto the resistance of the atmosphere. Most of our pulleys are machine moulded, allare made with straight tapering arms, are properlyproportioned, and in every way have an abundant andwell distributed strength, without having any super-fluous material to add to the necessary weight that iskept in motion at the expense of power. They are all bored to fit accurately totheir carrying shafts, are ma
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Keywords: ., bookcentury1800, bookdecade1890, bookidillu, booksubjectmachinery
