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Scientific American, Vol. 25, No. 2 (July 1871) (1871)

leaf 4

An illustration from Scientific American, Vol. 25, No. 2 (July 1871), 1871, leaf 4
rna- The next that of first assistant examiner, with a salary of further information. mental circular work may be performed. $1,800. The next, principal examiner, at a salary of $2,500; It consists in the adaptation of variously shaped tools to an Vulcanized Rubber. and the highest that of… … Office, fearing that his place might not be secure, had sought Since the date of the first patent (1843), the method of pre- A is the bit, having a rectangular enlargement on the to fortify himself with a few more endorsements. Among paring the rubber has been greatly improved, but, as it is shank,…

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