second removal position q on a conveyor belt 28 the computer part 19 controls these operations the arms 24 26 can so pivot not shown as to be pivoted from a vertical position in which they can be moved past the stationary cans into a horizontal position in which they can displace the cans the arms 24 26 are parts of the delivery device 11 the significance of the conveyor belts 23 27 28 will be described in greater detail with reference to fig6 fig6 shows a number of cards 10 so disposed parallel to and adjacent one another that the conveyor belts 23 27 28 extend to a can conveyor 29 the cans on the conveyor belts are moved in directions indicated by arrows in fig5 and 6 i e the cans on the belt 23 are moved towards the can delivery and the cans on belts 27 28 are moved towards the can conveyor 29 the cans on the belt 23 are empty cans the cans on the belt 27 are full cans and the cans on the belt 28 are cans containing the sliver produced with the card on decreased output so that a can may have any level of filling so that the cans can either be pushed off the conveyor 29 on to the belt 23 or pulled off the belts 27 28 on to the conveyor 29 the conveyor 29 has pneumatic reciprocating actuators 30 the operation of which is shown in greater detail in fig8 as.