Abstract
December 8, 1823.—The waterproofing industry dates from the patent granted to Charles MacIntosh for his “process and manufacture whereby the texture of hemp, flax, wool, cotton, and silk, and also leather, paper, and other substances, may be rendered impervious to water and air”, the specification of which was enrolled on Dec. 8, 1823. The process, which consisted in placing a sheet of rubber (formed by dissolving small pieces of rubber in naphtha and allowing the solvent to evaporate) between two layers of fabric, was very successful, and MacIntosh's goods quickly attained a high reputation.
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Calendar of Patent Records. Nature 124, 895 (1929). https://doi.org/10.1038/124895b0
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DOI: https://doi.org/10.1038/124895b0