Fraps, George Stronach, 1876- · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 126
PRINCIPLES OF DYEING io8 which the yarn is to be treated is raised by means of a pump (£7) from a well below the floor into a perforated wooden tray ( D ), which showers it over the goods. It percolates through the goods, accumulates below the false bottom, and flows back into … and acid act upon the pump, neces- FlG. 5. — Bleaching under sieve. sitating frequent repairs. The chemicking may also take place in plain wooden vats or cisterns, the yarn being thrown into the liquid. At the end of the operation, the bleach liquor is, as a rule, only half exhausted, and is pumped…
Dyes and dyeing
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