Description: Photograph of a combination seed huller, scarifier, cleaner and grader. This machine was operated at about 1200 rpm with a 3 to 5 horsepower gasoline motor and cleaned at the rate of 1000 pounds of cleaned seed per day. The loss in weight from unhulled, unscarified seed from the grain operator varied from 15% to 35% in weight where average loss was 25%. AR-D25-31.
Date: September 24, 1942
Partner: Oklahoma Conservation Historical Society