Improvement in the Mode of Extracting Color from Dye-Woods, US Patent No. 951
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US patent specification by Laurens Kent of Dorset, Vermont, for extracting color from dye-woods by steam or distillation instead of ordinary boiling. It describes an upright tub holding 400 to 500 pounds of ground wood with a strainer near the bottom and a steam pipe entering through the head. The liquor is drawn off and returned to the boiler, leaving the coloring matter as a gum or powder, and alcohol with a condensing worm is used for woods whose color water cannot extract fully. The single claim covers the steam and distillation process for producing dye extracts for dyeing and staining.
- Type
- Patent
- Date
- September 27, 1838
- Language
- English
- Pages
- 1
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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