US PATENT SUBCLASS 112 / 446
.~.~.~ Closed pattern sewing (e.g., buttonhole)

Current as of: June, 1999
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112 /   HD   SEWING

154  DF  STITCH FORMING {17}
157  DF  .~ Zigzag {3}
443  DF  .~.~ Vibrating needle {9}
446.~.~.~ Closed pattern sewing (e.g., buttonhole) {2}
447  DF  .~.~.~.~> Including electronic memory
448  DF  .~.~.~.~> Having cam actuation of needle or material feed {1}

DEFINITION

Classification: 112/446

Closed pattern sewing (e.g., buttonholes):

(under subclass 443) Device particularly adapted to sewing a discrete set of stitches (i.e., a pattern) on material, which pattern encloses a portion of the material within boundaries formed by the stitches.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65+, for machines adapted for stitching around the edges of an opening, such as a buttonhole. Note subclass 73, particularly, in which the needle is shifted laterally in forming the buttonhole stitch.

264.1, for methods of buttonhole or eyelet forming.

316, for stitch forming mechanisms having means to advance the work material wherein the stitch length is adjustable and the material feed direction is reversible.