for example the wire mesh drum may rotate at a speed of approximately 15 to 45 rpm with an abrasive roll 20 having approximately a 24 inch diameter rotating at approximately 150 to 450 rpm the wire mesh drum 27 is rotated by an electric motor 33 through a drive shaft 34 and its associated sprocket 35 sprocket chain 36 and sprocket wheel 37 mounted on the left end of the wire mesh drum as shown in fig2 and 6 as noted from fig4 cylindrical hood 16 is mounted to surround at least the top half of the coaxially mounted roll 20 and wire mesh drum 27 the bottom portion of the hood is open for receiving a flow of air which is drawn into the housing 11 through a pair of openings 38 and 39 located longitudinally along each side of the housing the openings 38 and 39 are each controlled by a hinged cover or door 40 and 41 respectively and forming a part of the surface of the sides 14 and 15 of housing 11 a pair of baffles 42 and 43 mounted inside the lower porton 44 of housing 11 direct the air introduced or drawn into the housing into the annular space 45 formed between the outer periphery of the wire mesh drum 27 and the inside surface of hood 16 some of the indrawn air also passes through the annular space 28 between the outer periphery of roll 20 and inner surface of the wire mesh drum 27 as the air passes upward through annular spaces 28 and 45 it becomes laden with lint that is being removed from the cottonseed and then exits through.