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Scientific American, Vol. 28, No. 15 (1873) (1873)

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An illustration from Scientific American, Vol. 28, No. 15 (1873), 1873, leaf 0
the end of the plate, A, at C. they have been applied, weighs but seven pounds; and the multaneously exerted, one of which is involuntarily given When the chair is keyed up, by turning the bolt its head en- use of aluminum, instead of German silver, for the lower by the grasp of the stock. As… … as the key fits into the second MAPOTHER’S DUPLEX SAFETY GUN LOCK. Flames from Compressed safety notch, T, while the sear, Gas, of, say four ounces, is in a position to improve the balance of O, obtains its hold upon the tumbler; the action of the main- M. F. Benevides, Professor of Physics at the…

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