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Scientific American, Vol. 52, No. 17 (1885) (1885)

leaf 4

An illustration from Scientific American, Vol. 52, No. 17 (1885), 1885, leaf 4
l shaft, whose material is so distributed that none of it is useless. above and below their respective pivots, by a rod. The The block or frame is provided with two recesses, be- upper end revolves in a bearing in the frame, F. To engraving represents the rods connecting with the bow the shaft… … The cloth is now covered with powdered mother-of- THE ACME COLD IRON PUNCH. pearl, which is spread evenly by means of a hot roller, and the excess of mother-of-pearl which does not stick bars, K. To these bars, below each hub, are attached the male die slides vertically. On the lower end of to the…

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