US PATENT SUBCLASS 57 / 315
.~ With drafting

Current as of: June, 1999
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57 /   HD   TEXTILES: SPINNING, TWISTING, AND TWINING

1 R  DF  APPARATUS AND PROCESSES {45}
315.~ With drafting {5}
316  DF  .~.~> Domestic
317  DF  .~.~> Variable draft {1}
319  DF  .~.~> Intermittent {1}
327  DF  .~.~> With carding
328  DF  .~.~> False twist type {3}

DEFINITION

Classification: 57/315

With drafting:

(under subclass 1) Subject matter wherein fibrous material, usually in substantially untwisted condition, as in a sliver or roving, is subjected to an attenuating or drawing operation combined with a twisting or twining operation so that the attenuation results in a reduced cross section in the sliver or roving due to relative longitudinal displacement of the individual fibers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

97, for driving of drafting rolls with speed adjustment.

310, for twisting combined with stretching concomitantly with, or subsequent to twisting.

SEE OR SEARCH CLASS

19, Textiles: Fiber Preparation,

236+, for drafting structure, per se.