Hummel, J. J. (John James), d. 1902 · London : Cassell · leaf 295
he Chap. XII.] MACHINERY FOR WOOLLEN YARN. 281 whole of the wooden rollers holding the yarn can be im-mei-sed in or removed from the vat liquor simultaneously.When the frame is lowered, the ends of the axes of tlierollers rest iii the sockets c fixed on each side of the vat.The turning of the hanks… … Fig. 72.—Hydro-extractor. horizontal rails d, situated on both sides of the vat. Bymeans of a complicated system of levers e, actuated by apair of cams, the rails D are moved both vertically andhorizontally in such a manner that a small circle is de-scribed by the wooden blades which they su))port.…
Dyes and dyeing
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