US PATENT SUBCLASS 452 / 26
.~.~ Combined with twisting of casing

Current as of: June, 1999
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452 /   HD   BUTCHERING

21  DF  SHIRRING OF CASING {5}
24  DF  .~ Shirring head {2}
26.~.~ Combined with twisting of casing

DEFINITION

Classification: 452/26

Combined with twisting of casing:

(under subclass 24) Subject matter including a means which causes the casing to rotate about the axis of the mandrel during or subsequent to the shirring operation so that the shirrs form a helical pattern along the casing.