The manufacture of varnishes : oil crushing, refining and boiling and kindred industries : describing the manufacture and chemical and physical properties of spirit varnishes and oil varnishes, raw materials, resins, solvents and colouring principles, drying oils, their extraction, properties and applications, oil refining and boiling, the manufacture, employment and testing of various varnishes (1899)
Livache, Ach. (Achille), M'Intosh, John Geddes · London : Scott, Greenwood · leaf 296
of being easily removed, have also been employed. Oil is sometimes heated by immersing the pan in a sand bath, or in a bath of a suitable alloy. But this plan is hardly to be recommended. In point of fact, if for any reason the temperature rises too high, the oil cannot be withdrawn from the source… … Pig. 22. — Movable Furnace. To remedy this inconvenience, the pan, which sometimes measures more than a cubic yard, is mounted on a kind of trolley. The circular opening of the fire is on a level with the ground. If the temperature rises too high all that has to be done is to remove the trolley…
Drying oils · Oils and fats · Varnish and varnishing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
