Hummel, J. J. (John James), -1902, Foster, A. R, Hasluck, Paul N. (Paul Nooncree), 1854-1931 · Philadelphia : David McKay · leaf 16
hrough lime-water or a hot soap bath, probably because of the removal thereby of some yellow colouring matters. A part of the Mather & Piatt Indigo piece-dyeing machine is shown in Fig. 2, this portion being duplicated, trebled, or quadrupled according to the shade of indigo required. The cloth is… … Fig. 2. — Enlarged View of One Dyeing Cistern and Accessories. folds upon the slowly travelling apron d, the time of traverse being such as to enable the Indigo to become sufficiently oxidised upon the fibre. The cloth then enters the next vat, where the operations are repeated, and so on to the…
Dyes and dyeing · Coloring matter
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
