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Scientific American, Vol. 96, No. 1 (1907) (1907)

leaf 8

An illustration from Scientific American, Vol. 96, No. 1 (1907), 1907, leaf 8
a thinner steel can be of the penholder of to-day. This was a great economy, it is necessary to harden them by heating them red used. The steel which started 19 inches long has and soon the pen took its present form, and the pen- been stretched to about 50 inches, and is then ready hot, and… … Fig. 10 Polishing and Coloring. Figs 8e—The Slitting Machine. Fig. 9.—Examining for Defects. then dried in sawdust. This makes the pen very brit- Cheap pens are cut from steel that comes in large their stiffness. This was overcome by the introduc- rolls ready for use, as it is impossible to roll…

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