Patent ID: RE39943

Claim:
An extrusion attachment for sausage making machines, comprising, an inner hollow elongated restrictor tube having an intake and a discharge end, and having a fixed diameter, an inlet coupling secured to the intake end of said restrictor tube and having a bore therein of a greater diameter than the fixed diameter of said restrictor tube and being in communication therewith, an outlet port coupling on the discharge end of said restrictor tube and having a bore therein with a diameter greater than the diameter of said restrictor tube, a second tube concentrically mounted around said restrictor tube and having an inner diameter spaced from an outer diameter of said restrictor tube to create a first passageway therebetween, a third tube concentrically mounted around said second tube and having an inner diameter spaced from the outer diameter of said second tube to create a second passageway therebetween, said inlet coupling and said second tube being connectable to a source of meat emulsion under pressure, said first passageway being of sufficient size that meat emulsion moving therein will maintain a meat emulsion pressure substantially the same as the pressure from said meat emulsion source, said second first passageway having a narrowed discharge channel surrounding the discharge end of said restrictor tube whereby meat emulsion exiting the second first passageway will provide a thin layer of meat emulsion around the surface of meat emulsion exiting said restrictor tube, said third second passageway being connectable to a source of collagen material under pressure and having a narrowed discharge channel adjacent said outlet port coupling to deposit a collagen material layer around the meat emulsion discharged by said restrictor tube and said second tube.