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Scientific American, Vol. 7, No. 7 (November 1, 1851) (1851)

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An illustration from Scientific American, Vol. 7, No. 7 (November 1, 1851), 1851, leaf 0
VOLUME VIL] [NUMBER 7. out two threads, no good stitch has yet been THE Scientific American, made by any sewing machine. X is the shut- CIRCULATION 16,000. … cured a suspended lever, h, having a collar, h roller stud on its inner face fitting into a plate, the profits three anda half per. cent. on the surrounding said shaft, near its bearing end, 7. perspective view, figure 1, anda side eleva- G, slotted of a heart-shape, to answer the pur- capital. In…

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