Patent for a new and improved cotton gin. This design consists of an "endless wire-gauze band or apron, bound at its sides with strips of flexible material, such as leather . . . and provided on its inner side with slats, in combination with the saw-shaft, the condenser-roller, and the upper roller, around which the band passes, provided with longitudinal channels . . . in [a] cylinder and [a] wiper" (lines 81-92).