US PATENT SUBCLASS 112 / 182
.~.~ Timing

Current as of: June, 1999
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112 /   HD   SEWING

154  DF  STITCH FORMING {17}
181  DF  .~ Revolving-hook type {3}
182.~.~ Timing

DEFINITION

Classification: 112/182

The hook is operated at a variable speed or through a plurality of revolutions to one reciprocation of the needle.