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Scientific American, Vol. 41, No. 7 (1879) (1879)

leaf 6

An illustration from Scientific American, Vol. 41, No. 7 (1879), 1879, leaf 6
ngine; sounds a gong at the seats to the seat frames of chairs, has been patented by draws the end of the lever to which it is attached forward; head of the bed of the chief at his residence, which is near Mr. Robert Fitts, of Lunenburg, Mass. It is so con- and the lever, by recking or rolling on… … to produce equilibrium, and if the current may be adjusted for boring brasses for jour- weakens or strengthens the lever will move nals of different diameters. backward or forward until the resistance ad- An improvement in that class of wheel hubs justed by the decreased or increased number in…

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