Hummel, J. J. (John James), -1902 · London : Cassell & Company · leaf 321
305 INDIGO. Clmp. XIII.] trammel-net, I the emptying-pipe ) d is a fixed bar sup- porting the stirring-screw c and the cone E. The parts drawn in dotted lines represent the movable portions of the stirring arrangement ; G is a strong wooden bar which can be readily fixed across the top of the vat ;… … guiding cone E can be readily connected with the screw c. A cheaper but less substantial arrangement is that in which the vat is made of wood, and heated internally by a copper steam-pipe forming a spiral half-way up the walls of the vat. When not in use for dyeing, and to prevent loss of heat and…
Dyes and dyeing
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