Painters' colours, oils, and varnishes : a practical manual (1906)
Hurst, George H. (George Henry) · London : Charles Griffin & Company · leaf 401
hed in so doing, the weight to which it is subjected increasing as it passes through the various nips ; in a roll machine having rolls of the size given above, each roil will weigh about IJ tons, so that if there are five rolls, the final pressure on the seed will be from 5J to 6 tons. The seed is… … a certain size depending upon the size of the press plates, but usually having a thickness of 1^ inch, the machine exerting a small amount of pressure to bring the mass of meal to this thickness. The surplus seed is returned to the kettle or the crushing rolls to be passed through with fresh seed.
Paint · Varnish and varnishing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
