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Scientific American, Vol. 26, No. 25 (1872) (1872)
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RICE, ETC, raising the grain to be dried to the requisite hight; it has perforations in the contained tubes into all the compartments the cylinder, B, and another leading downward to a suitable through the cylinder, C, the grain should not be dry enough, receptacle for the grain. A valve is… … Our engraving shows a novel form of pestle to be used in hulling rice, coffee, etc., either by hand or machinery. It is © 1872 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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