Patent for a cotton-cleaning apparatus made up of "a stationary foraminous case or drum having an inlet-opening in the upper side of its small end, a rotary shaft extending centrally through the case or drum and having a plurality of spirally-arranged at the large end of the foraminous case and having a discharge-pipe for conveying the cotton to the point where it is to be deposited or discharged - as, for instance, into gins or gin-feeders" (lines 9-19). The cotton goes in one end, the cotton is elevated, beater-arms move the cotton along, and fans drive the cotton to the gins.