Читать книгу The Practical Ostrich Feather Dyer - Alexander Bartlett Paul - Страница 27

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All old colors, excepting dark brown, bottle green, navy blue, black, garnet, etc., can be dyed a good shade of ecru. Begin an old color by passing them through a solution of hot water, about one ounce of soda to a gallon of water, for about 30 seconds; after which take them out and rinse by passing them through clean boiling water, which will draw off more color than it would seem possible the feathers could contain. If all the old color, or enough of it, be not removed, put feathers through the permanganate of potash process. For dirty white feathers simply wash them thoroughly with soap and hot water, and rinse well; then prepare your bath as follows: One gallon of hand warm water, add a small handful of starch, and enter feathers, rubbing them around thoroughly, and getting the starch rubbed into the flues; then add to bath a small quantity of copperas, about the size of a bean, and re-enter your feathers and let remain in bath about one minute or less; after which add a few drops of logwood liquor and about a teaspoonful of diluted aniline brown, first removing feathers from bath; enter feathers and let remain in bath about one minute, being careful to keep them moving in bath. If found a little too brown to match your sample, a small pinch of turmeric added to bath will reduce the shade. If they are found a little too yellow for sample, a drop of diluted violet will answer.

If the dyer, through his own carelessness, should allow his color to get too dark, proceed to extract color as follows: dilute in about one gallon of luke warm water one-half teaspoonful of oxalic acid. Enter feathers, first rinsing off starch in cold water; let them remain in about half a minute, and rinse off about three times in hot water to remove acid. The acid will turn the feathers a bright yellow, and after rinsing off well the yellow color will have entirely disappeared, and the feathers a light shade of dust. Prepare a fresh bath as per recipe, and, using more care, enter feathers and pass through until you have acquired the desired shade.

In the first bath, should a very dark shade be required, add a little more logwood and copperas than directed in the recipe, and if a very light color, a little less.