Painters' colours, oils, and varnishes : a practical manual (1906)
Hurst, George H. (George Henry) · London : Charles Griffin & Company · leaf 373
CONE GRINDING MILLS. 355 grators are capable of dealing with a great variety of materials. The grinding surfaces are 20 inches in diameter and run at a considerable speed, 550 to 1,000 revolutions per minute. The mill is very strongly constructed. It takes about 4 horse-power to drive it ; the… … Fig. 49. — Disintegrator (section). Fig. 50 is a partly sectional view of a cone mill, or, as it is sometimes called, a conoidal mill, in which stones are used for the grinding surfaces in place of iron surfaces. Such a mill will be found useful in those cases where it is thought that iron grinding…
Paint · Varnish and varnishing
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