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Scientific American, Vol. 18, No. 6 (1868) (1868)

leaf 7

An illustration from Scientific American, Vol. 18, No. 6 (1868), 1868, leaf 7
hell, B, having three or more slots in its periphery in which “The proportions and the process of combination preferred potash, 14 ounce; sal-ammoniac, 14 ounce; manganese, 44 fit the movable jaws,C. These are threaded onthe under by us are as follows: To twenty parts, by weight, of commi- ounces;… … ganese, 4 ounces ; charcoal, 9 ounces ; salt, 34 ounces; alum,tounce. To make rifle steel, to a pot of 50 pounds, add potash, % ounce; cined magnesia, and mix them together, with sufficient bit- covered by the case, D, held in place by the cap nut, E, which manganese, 4 ounces; charcoal, 3-$…

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