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 176
164 CONDENSING PLANT. become fluid before the others, and quickly turn brown and then char, and thus colour the whole mass. Small quan- tities, on the other hand, melt quickly and almost at the same time. It is advisable not to exceed at one operation 2h lbs. of hard copals or ambers, and 5 lbs. of… … FiG. 6. facturers. It consists (Fig. 6) of a sheet-iron cyHnder, well rivetted together, which terminates in the form of a cone, and which rests on a sheet-iron cylinder acting as a furnace. In the annular central space a second cylinder of copper of less diameter is placed, the lower part of…
Drying oils · Oils and fats · Varnish and varnishing
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