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Scientific American, Vol. 33, No. 12 (1875) (1875)
leaf 4
hen skillfully carried out as it is at our large works, ‘if we allow for the moment that the casting of perfectly solid ingots is at present unattainable in regular practice; tural material; but it is equally true that it is far from be- angle. By means of the slot and set screw in the frame, the… … © 1875 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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