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Scientific American, Vol. 23, No. 6 (August 1870) (1870)

leaf 15

An illustration from Scientific American, Vol. 23, No. 6 (August 1870), 1870, leaf 15
And American Institute Fair, New York, 18811. W. W. WALKER, Vice President, Cedar Rapids, Iowa. Practical Information, Art, Science, Over 1,000 Boilers in Use. wArrn wheelk prices Reduced; Mechanics, Invention, Cliemistry, and Weston's Patent Differential iTIanufactures—Entered Its Twenty-filth… … Gearing Shafting. at every Fair where they have been exhibited at the American Saw Co, Manufacturers of Sl'00 per line. Enaravingsmay head advertisements at same time. We don't use thechilled or very hard metal sheaves for the reason that they soon wear out the the mrw rate per line, by measurement…

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