US PATENT SUBCLASS 28 / 222
.~.~ Clearing

Current as of: June, 1999
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28 /   HD   TEXTILES: MANUFACTURING

217  DF  THREAD FINISHING {4}
219  DF  .~ Surface modification of running length {5}
222.~.~ Clearing {4}
223  DF  .~.~.~> Combined clearing operations {1}
225  DF  .~.~.~> With stopping
226  DF  .~.~.~> Clamping, severing or shearing {5}
239  DF  .~.~.~> By singeing

DEFINITION

Classification: 28/222

(under subclass 219) Method or apparatus for removing or assisting in the removal of material in the nature of either an abrupt enlargement or thickened portion, i.e., a knot or slub, or other projecting flaws, imperfection, impurities or the like from thread.

(1) Note. This subclass is the repository for those patents relating to the surface clearing of thread by single or unitary brushing, rubbing, scraping or cutting devices which do not form a fixed knot or slub entrapment opening of predetermined dimension for passage of the thread therethrough in transit to a take-up or collection site and those patents relating to the clearing of the thread by rubbing engagement upon itself.