Patent
1977-10-14
1980-05-06
Abercrombie, Willie G.
17 1F, A22C 1302
Patent
active
042009600
ABSTRACT:
A method for the shirring of synthetic tubes or casings comprising inflating the casing, inserting a long guide element of comparatively low gyrating cross-section into the casing while it remains inflated, applying pressure to the casing with a plurality of shirring elements engaging around its circumference in the same axial range, and gyrating the shirring elements in an eccentric pattern around the center of the guide element to effect gripping and carrying of the casing axially against a control-retracting buffer on the axial fold formation through which the casing is folded in a spiral shape. A device for shirring of the sausage casing comprises a guide mandrel over which the casing is fed through a shirring head which includes a plurality of rotatable profile rollers carried on the head and arranged radially in respect to the guide mandrel at spaced circumferential locations around the mandrel. The device also includes first and second rotating shafts having eccentric portions connected to the shirring head so as to cause gyration of the shirring head and a gyratory movement of the profile rollers around the casings to fold the casings in a spiral shape.
REFERENCES:
patent: 2983949 (1961-05-01), Matecki
patent: 3266911 (1966-08-01), Clement
patent: 3310833 (1967-03-01), Clement
patent: 3594857 (1971-07-01), Michl
patent: 4085483 (1978-04-01), Winkler
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