In almost every rice mill, after milling and polishing, rice mixtures are graded and head or whole grains are separated from different sized and broken ones. In order to obtan a uniform product with high commercial value, it is necessary to blend different tupes of rice proportioally and adequately. Equipment No. 39 Volumetric Rotary Feeder is specially constructed to perform this process, handling rice delicately at a high capacity and most dependable accuracy.