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Scientific American, Vol. 38, No. 1 (January 1878) (1878)

leaf 4

An illustration from Scientific American, Vol. 38, No. 1 (January 1878), 1878, leaf 4
c- of the table is bolted the rack, A A, into which gears the and holding the string with the left hand. A circular mo- tions; second, that air is compressible. Upon relaxing the pinion, B, which is fixed to the same shaft as the bevel gear, tion will thus be communicated to the pencil, and it will… … the table, K, is going one way, and in proaches that of a circle, until at last CUTTING SPIRALS AND RIFLE GROOVES. it becomes a circle and then it revolves the other when the motion of the table is reversed; hence, a tool in the tool horizontally. This shows that even a post will cut a spiral…

Patents · Water · Solution · Color · Patented · Fire proof · Address · Patent issued · Paper read · Scientific American · Professor huxley · Diamond tool · Patent office · Small vial · Uranus rises · Natural history

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