Leather dressing, including dyeing, staining and finishing (1907)
Lamb, M. C. (Morris Charles) · London : The Leather Trades Publishing Co. · leaf 143
DRUM DYEING. Ill … Fig. 74. §280. If the drum door is central the best course to adopt is to have several thermometers, say three, fixed to the drum in such positions that one of them is always below the liquor level. The a n ne x e d illustration, (Fig. 75), makes the arrangement clear ; it is besides not expensive.…
Dyes and dyeing · Leatherwork
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