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.