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Scientific American, Vol. 39, No. 25 (1878) (1878)
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s or) A cock is being exhibited at Paris which fires a shot grate. The valves, the Water pans, and the grate, are ar- shaft periodically rotates the spider carrying the water pans ranged in such relation to each other that while the fire is every hour. Somebody says that its great practical utility… … © 1878 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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