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Scientific American, Vol. 41, No. 17 (October 1879) (1879)

leaf 6

An illustration from Scientific American, Vol. 41, No. 17 (October 1879), 1879, leaf 6
continue to work their hoop, these pins roll in their places, as they are carried under way into the wood; and they attain their full growth about two series of small files, three in each. These files grow the last of December, when they are about three-sixteenths finer toward the end of the… … chines. Lastly, a perfect genius of a machine ■work close to the outside of the piece, leaving only a thin hangs the pin by the head, in an inclined platform, through shell on the outside as a protection. They then undergo as many ' slots' as there are pins in a row on the papers. trough cut in the…

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