. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 2.—Cutaway disk. PULVERIZERS AND HARROWS. 677 All harrows of the rotating-disk class are subject to a considerable amount of side pres-sure on each disk, which accumulates at the rearward hanger, causing a severe friction this hanger, the Keystone Manufacturing Co., of Sterling. 111., make for their machine.

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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering