Abstract: A driven conveyor having an upper surface for receiving and transporting seed cotton comprises a plurality of spaced apart slats, each extending transversely relative to the direction of travel. Each slat has a roughened surface to which cotton fiber will adhere. The transverse gaps between the respective slats facilitate severance of seed by a transverse blade that is in contact with the upper surface of the conveyor, while the cotton fiber adheres to the slatted upper surface and is pulled through the pinch point between the blade and the conveyor. An air flow chamber is arranged above the blade so that seed separated from the fiber at the pinch point can be removed. An air suction device is provided downstream of the blade for removal of the fiber from the upper surface. A blade mounting assembly resiliently biases the blade in floating contact with the upper surface of the conveyor.