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Scientific American, Vol. 12, No. 7 (October 25, 1856) (1856)

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An illustration from Scientific American, Vol. 12, No. 7 (October 25, 1856), 1856, leaf 0
———— Sine gece ets _. VOLUME XII. NUMBER 7. THE … another ring, F, whose periphery is furnished M is raised, it locks into a notch in rod P,and with a series of clamps or points, each clamp of heads, out of boards of different thickness- This machine is strong, substantial, and op- continues to hold bed K against the bottom of being separate and…

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