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Scientific American, Vol. 37, No. 20 (November 1877) (1877)

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An illustration from Scientific American, Vol. 37, No. 20 (November 1877), 1877, leaf 0
m a hot-air chamber it be added that the "Ingram" machine only occupies the The object will need constant cleaning with a brush. The for the heated air from the lamp to pass through. The space of an ordinary perfecting machine; and little more solution is rectified with oxide of iron when choked… … INGRAM'S ROTARY MACHINE FOR PRINTING ILLUSTRATED NEWSPAPERS. © 1877 SCIENTIFIC AMERICAN, INC

Iron · Improved · Consists · Cobalt · Patents · Scientific American · Nitric acid · Inner valve · Neutral iron · Fire proof · Cast Iron · Upper wheel · American supplement · Sewing machine · Gun metal

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