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Scientific American, Vol. 67, No. 24 (1892) (1892)
leaf 7
ara rubber a day, or from 8,000 to factory No. 1, all of the odd sizes are made, the ma- 10,000 pounds of the coarser grades. chine shops are located, new designs are perfected, steel From the grinding room the sheets of rubber are page. This stamps, at the same time, the pattern rolls engraved and… … after a thorough inspection, are carefully boxed and inch in thick- © 1892 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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