EARTH COLOURS 8o discharged at the side. This may be replaced by a series of mouths for discharging direct into bags, or the machine can be adapted to deliver into an elevator, worm conveyor or other means of transport to a distance. The screenings are discharged through a shoot at the back of the… … FIG. 23. ways. A beater is provided to clear the drum and increase the output. Fig. 23 illustrates a centrifugal sifting-machine for producing very fine powder in large quantities without any escape of dust. It contains a screening drum, the frames of which are detachable and facilitate chang- ing…
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Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
