Garment dyeing and cleaning : a practical book for practical men (1901)
Hurst, George H · London : C. Griffin & Company, Limited · leaf 45
ion, so that the spirit may be used again and again untilit becomes too much charged with impurities; further purifica-tion must then be effected by distillation. Some of these simplepurification processes will now be described. Filtering Process.—Drevets apparatus for the purification ofbenzoline… … Fig. 10.—Benzine cleaningapparatus. of the vessel to near the bottom, while the other extends fromthe bottom to near the top, as shown. The middle compartraeutis filled with cotton wool or someother filtering material. The dirtyspirit is placed in the end compart-ment, and, by virtue of the action…
Dyes and dyeing · Cleaning
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