A - Human Necessities – 22 – C
Patent
A - Human Necessities
22
C
17/18
A22C 21/00 (2006.01) A22C 21/06 (2006.01)
Patent
CA 1080413
APPARATUS FOR CUTTING OUT THE VENT OF A FOWL Abstract of the disclosure Automatic vent cutting machine for poultry, cooperating with an overhead conveyor carrying birds by the ancle joints, having at least one cutting unit moving along with the conveyor and reciprocatable towards and away from the bird, the cutting unit having a hollow cylindrical knife concentrically rotatable about a center pin, in which the knife is axially reciprocatable relative to the center pin, and in which the tip of the center Pin to be inserted into the vent opening of the bird is provided with a tapering external helical flight and is rotatable in a direction opposite to the rotation of the knife, so that in opera- tion first the tip of the slowly rotating center pin is inserted, after which the fastly rotating knife shoots out over the tip of the center pin and cuts out the vent, during which the friction between the rotating tip of the center pin and the vent prevents the vent from rotating with the knife, then the knife and the center pin are stopped and retracted from the bird, thereby pulling the cut out vent, which is locked between the knife and the flight of the center pin, out of the bird together with the gut attached to the vent, and finally the vent is released by pulling the knife back from the tip of the center pin. The machine further has for each cutting unit two cooperating positioning members for positio- ning the bird relative to the cutting unit, one of which bears on the breast of the bird and pushes it under the cutting unit, where- as the other positioning member bears on the back of the bird and pushes it back briefly at the moment the tip of the center pin and/or the knife is inserted in order to bring the vent opening staight below the center pin, respectively in order to bring the rose-bud within the radius of the knife. -1-
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