Machine for the extrusion of paste products

Claim 1

APARATUS FOR THE EXTRUSION OF PASTE PRODUCTS, SAID APPARATUS COMPRISING: A CASING HAVING AN EXTRUSION CHAMBER THEREIN; A HOOPER MOUNTED ON SAID CASING AND ADAPTED FOR HOLDING THE PRODUCT TO BE EXTRUDED, SAID HOOPER HAVING AN ELONGATED FEED OPENING IN THE BOTTOM THEREOF COMMUNICATING WITH SAID EXTRUSION CHAMBER; A ROTTABLE EXTRUSION SCREW MOUNTED IN SAID EXTRUSION CHAMBER AND EXTENDING ACROSS SAID FEED OPENING; AN EXTRUSION NOZZLE MOUNTED ON SAID CASING FOR RECEIVING MATERIAL FROM SAID SCREW; A FEED DRUM ROTATABLY MOUNTED IN THE BOTTOM PROTION OF SAID HOOPER SUBSTANTIALLY ADJACENT SAID FEED OPENING, SAID FEED DRUM BEING ROTATABLE ABOUT AN AXIS SUBSTANTIALLY TRANSVERSE TO THE SCREW AXIS, A PLURALITY OF CIRCUMFERENTIALLY SAPCED VANES MOUNTED ON SAID DRUM AND EXTENDING AWAY THEREFROM THROUGH SAID FEED OPENING INTO SAID EXTRUSION CHAMBER, SAID VANES SUBSTANTIALLY EXTENDING ACROSS THE WIDTH OF SAID FEED OPENING AND SAID EXTRUSION CHAMBER, SAID VANES EACH BEING OF ONE-PIECE CONSTRUCTION AND HAVING A SUBSTANTIALLY STRAIGHT OUTER EDGE ARRANGED TO EXTEND SUBSTANTIALLY DIAMETRICALLY ACROSS SAID EXTRUSION CHAMBER, SAID OUTER EDGE HAVING AN ARCUATE RECESS THEREIN BETWEEN THE ENDS THEREOF FOR RECEIVING A PORTION OF THE BASE OF SAID EXTRUSION SCREWS; EACH OF SAID VANES HAVING A PORTION ADAPTED TO COOPERTE WITH AND CONTACT THE FLANK OF THE THFREAD OF SAID SCREW WHEREBY SAID FEED DRUM IS ROTATED IN RESPONSE TO ROTATION OF SAID SCREW.