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Scientific American, Vol. 38, No. 20 (May 1878) (1878)
leaf 7
an running. of the main valve, the stem passing out through the hol- improved Saw Cleaner for Cotton Gins, consisting of a series The piston speed is, for all sizes, 500 feet per minute. low steel stem of the main valve, and being driven from a of notched wipers, composed of fiexible loose… … knife. to nearly three quarters of the stroke. © 1878 SCIENTIFIC AMERICAN, INCPatents · Iron · Center · Gold · Valve · Scientific American · Wire · Black oaks · Steam boiler · Safety valve · Iron ore · American supplement · Horse power · Relief valve · Gold wire · Send stamp
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