US PATENT SUBCLASS 19 / 236
.~ Drafting

Current as of: June, 1999
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19 /   HD   TEXTILES: FIBER PREPARATION

65 R  DF  WORKING {8}
236.~ Drafting {7}
237  DF  .~.~> Producing longitudinal variations {1}
239  DF  .~.~> With material sensing {1}
242  DF  .~.~> With fiber stretching
243  DF  .~.~> With doubling
244  DF  .~.~> Apron type {8}
257  DF  .~.~> With cooperating trough
258  DF  .~.~> Roll type {9}

DEFINITION

Classification: 19/236

(under subclass 65) Methods or apparatus wherein the working comprises feeding a fiber strip by applying force at some area or point along the strip length and simultaneously retarding said strip at an area or point along the strip length removed from that at which the feeding force is applied, thereby causing said strip to become attenuated.

(1) Note. The distance between these two areas or points is usually referred to as the "ratch".

(2) Note. In addition to patents restricted by claim to drafting, there will be found in this and indented subclasses patents to subcombinations not considered to be of general utility, e.g., saddles.

SEE OR SEARCH CLASS

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

66, for filament forming and stretching means.