Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 201
Fig. 348. Fig. 349. Rubber, mixed and ground with sulphur, subjected to heat, becomes vulcanized, andis not affected by moderate variations in temperature. Soft rubber, most extensivelyused for industrial purposes, is subjected to a heat of from 265° to 300°, and for a timecan withstand a…
Mechanical drawing
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