which is rotating in the opposite direction to the flow of deflected air and containment 15 fig4 air control bar 11 has an arcuate surface which is parallel to the outer peripheral surface of the next downstream cleaning saw cylinder the air control bar 11 prevents substantially all of the air from continuing to flow in the annular space between cylinder 2 and containment 12 any air that does flow in the annular space between cylinder 2 and containment 12 is directed tangentially in a manner which does not alter the path of the fiber being doffed at the pinch point between cylinders 1 and 2 eventually most of the deflected air will be entrained around the outer periphery of doffing brush cylinder 4 fig1 the air control bar 17 has an arcuate surface which is substantially parallel to the outer peripheral surface of the doffing brush cylinder 4 adjacent to the pinch point containment 18 and fiber guide 14 prevent entrainment of trash which was previously thrown out fiber guide 14 which runs the length of doffing brush cylinder 4 prevents the doffing brush cylinder from contacting the fiber until the fiber is near the pinch point thereby aiding in the doffing action air flow continues in the annular space between cleaning saw cylinder 5 and containment 22 and is entrained with the fiber.