references used in fig1 through 5 and are characterized additionally by the letter 34 b 34 these components already were discussed in relation to fig1 through 5 the revolving die 121 immediately adjoins a venting ring 43b of the kind already discussed above which in turn follows the discharge opening 41b of the conical screw compactor 27b the conical screw compactor 27b corresponds to the design of the compactor 27 of fig1 through 5 the revolving die 121 comprises a turret 123 rotatably supported about an axis of rotation 125 parallel to the screw axis 31b on a machine frame 127 a plurality of die pipes are mounted in circumferentially offset manner in a circle around the axis of rotation 125 and parallel to same in such a way that each time one of the die pipes 129 is aligned with the discharge opening 41b whereas simultaneously another die pipe 129 is aligned with a discharge station 131 wherein a plunger 135 driven by a hydraulic cylinder 133 can empty the die pipe a ratchet stepping system schematically indicated at 137 and directly acting on the turret 123 moves the die pipes 129 in consecutive order through the position aligned with the discharge opening 41b where the screw compactor 27b moves.