Expandable mandrel device for longitudinal shirring of flexible

Details Expandable mandrel device for longitudinal shirring of flexible Expandable mandrel device for longitudinal shirring of flexible

1980-01-16

1982-03-02

Abercrombie, Willie G.

17 41, A22C 1302

Patent

active

043172563

ABSTRACT:
A tubular mandrel device for longitudinally shirring flexible tube materials such as used in making sausage casings and the like. A tubular mandrel is formed by a plurality of parallel spring elements secured at one end and distributed in a cylindrical path around the axis of the mandrel. A control member moves axially within the tubular mandrel. Cam members fixed to the inside of the spring elements of the tubular mandrel cooperatively engage raised and lowered surfaces on the control member such that by moving the control member axially, the spring elements of the tubular mandrel are expanded outwardly.

REFERENCES:
patent: 658521 (1900-09-01), Atkinson
patent: 1616971 (1927-02-01), Henderson
patent: 1876279 (1932-09-01), Dietrich
patent: 3540076 (1970-11-01), Urbutis
patent: 4028775 (1977-06-01), Tysver

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