US PATENT SUBCLASS 112 / 228
.~ Revolving hooks

Current as of: June, 1999
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112 /   HD   SEWING

270  DF  ELEMENTS {21}
228.~ Revolving hooks {3}
229  DF  .~.~> Bobbin tensioning
230  DF  .~.~> Sectional
231  DF  .~.~> Bobbin holders and casings

DEFINITION

Classification: 112/228

Hook mechanisms or mechanism contained therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

467, for a zigzag stitch forming mechanism wherein the needle is shifted back and forth across the line of material feed, which mechanism includes specified means for working the thread on the side of the material opposite the side from which the needle penetrates the material.