Treatment of Tussah-Silk Cocoons, US Patent No. 354222
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US Patent No. 354,222 describes a process for treating wild tussah silk cocoons, and other silk or vegetable fibers, to remove their natural brownish color and gummy matter. The cocoons are washed, optionally sprinkled with a saponifiable oil such as lard oil, boiled or steeped in a solution of a metallic salt (stannate, aluminate, plumbate, silicate or borate of sodium or potassium, or alkaline zinc oxide), then washed in hot water and dried. The result is a white, lustrous, strong fiber ready for carding and spinning that can be dyed in light tints. Three process claims follow.
- Type
- Patent
- Date
- December 14, 1886
- Language
- English
- Pages
- 2
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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