US PATENT SUBCLASS 112 / 303
.~ Feeding work material

Current as of: June, 1999
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112 /   HD   SEWING

154  DF  STITCH FORMING {17}
303.~ Feeding work material {13}
304  DF  .~.~> By endless conveyor
305  DF  .~.~> Under tension
306  DF  .~.~> Having means to align work
307  DF  .~.~> Work of indeterminate length
308  DF  .~.~> Having curvate feature {1}
310  DF  .~.~> Needle and helper
311  DF  .~.~> Clamp type
312  DF  .~.~> Plural differential feed means {1}
314  DF  .~.~> Having adjustment feature {4}
320  DF  .~.~> Engaging upper side of work material {1}
322  DF  .~.~> Rotary feed
323  DF  .~.~> Four motion feed
324  DF  .~.~> Feed dog structure

DEFINITION

Classification: 112/303

Feeding work material:

(under subclass 154) Device having means to advance the work material into or away from the stitch forming mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80.3+, for an embroidering, tufting device with specific fabric supporting, manipulating, cutting, or treating means.

461+, for a zigzag stitch forming mechanism wherein the needle is shifted back and forth across the line of material feed, which mechanism includes cam means for actuating the needle or material feed and further includes specified structure for transporting the material.