A treatise on colour manufacture : a guide to the preparation, examination, and application of all the pigment colours in practical use (1908)
Zerr, Georg, Rübencamp, R. (Robert), Mayer, Charles · London : C. Griffin · leaf 85
hereby enabling the size of the cylinders to be reduced This problem has been easily and satisfactorily solved by the aid of bent centrifugal vanes running at very high speed on a common shaft. In the apparatus represented in Fig. 50 the materials to be sifted are fed by a worm into the circular… … in the direction of the shaft. The sifting frames of the cylinder are made of wood and covered inside with wire or silk gauze. These frames are fastened by wing screws on to the ribs of the cylinder, and can therefore be quickly and easily changed. The sifted material falls into the lower conical…
Pigments · Coloring matter · Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
