Patent for an apparatus for handling lint-cotton that allows air to move freely without back pressure while putting the fiber into a bat. It has a "trunk into which a series of gins deliver, of a primary condenser having a high surface speed, so that it will rapidly remove the fiber and prevent the bat from building up of such thickness as to check the escape of air, and a second condenser having a slower surface speed and arranged to receive the lint from the first condenser and form it into a thicker bat" (lines 29-37).