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Scientific American, Vol. 25, No. 3 (July 1871) (1871)

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An illustration from Scientific American, Vol. 25, No. 3 (July 1871), 1871, leaf 0
pon subsequent An opinion has been very general for some years that pure The applications of vulcanized rubber are so numerous and grinding. rubber valves of a floatable or nearly floatable quality were so varied in their nature that we cannot perhaps do better The attrition of the surfaces, by… … the inventor to the enterprising which had been employed in HOFFMAN'S GRAIN HULLING MACHINE. millers who wish to adopt his single cylinder condensing en- huller. For the use of persons desiring to test the merits than follow the selection of Mr. James Syme, Sen., in a pa- gines for periods ranging…

Patents · Zinc · Munn · Railroad · Scientific American · Iron · Horse power · Foot pounds · Specific gravity · Outer tines · Cubic centimeters · Hot air · Vulcanized rubber · Steam engine · Evaporating medium

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