Painters' colours, oils, and varnishes : a practical manual (1892)
Hurst, George H. (George Henry) · London : Charles Griffin & Company ; Philadelphia : J.B. Lippincott Co. · leaf 367
ILING LINSEED OIL. The plan of working is to first heat the oil in a tank with a closed steam coil for about two hours to a temperature of 95° to 97° C. (203° to 206° F.). This preliminary heating prevents a great deal of frothing in the boiling pan, which is a matter of consequence, especially… … Fig. 61. — Steam oil boiler. through the oil, when the latter begins to froth a good deal and the odour increases and becomes more pungent. The agitators are kept at work during the whole of the time the oil is being treated. Driers are now added in small quantities at a time until \ lb. for every…
Paint · Varnish and varnishing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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