five vee belts as also shown by fig1 at the opposite ends of the disperser rolls 40 pulleys are connected to the end shaft 66 of the disperser rolls 40 drive belts 162 164 166 168 170 172 interconnect adjacent pulleys the pulley on end shaft 66 for the center disperser is connected to both the pulley on the end shaft 66 above it and the pulley on the end shaft 66 below it the connection pattern of the pulleys 162 164 166 168 170 172 is shown in fig1 preferably the belts are cogged belts or are timing belts the belt and pulley drive system that is illustrated operates to rotate the disperser rolls 40 in the same direction and at substantially the same speed the direction may be either clockwise or counterclockwise the speed may be a variable speed that is determined by the output of motor 154 that is a variable speed motor 154 may be used or the motor may include a variable speed output transmission fig1 shows a modified system of the present invention in this system the disperser tunnels 20 22 the dispersers 24 26 28 30 the feed conveyors 32 34 36 38 may all be the same as their counterparts in fig2.