US PATENT SUBCLASS 226 / 91
THREADING DEVICE


Current as of: June, 1999
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226 /   HD   ADVANCING MATERIAL OF INDETERMINATE LENGTH

91THREADING DEVICE {1}
92  DF  .~> With means to pull lead-end


DEFINITION

Classification: 226/91

(under the class definition) Device characterized by means to lead or convey a lead-end of material to or through material moving mechanism.

(1) Note. The device must clearly be disclosed as being for the purpose of threading the lead-end of a new portion of material or of broken material to or through a material mover within the class definition. A device which pulls a lead-end of material through or to an operating station, such means being the primary feeding means provided, is found elsewhere. See Lines With Other Classes, Relationship to Specific Classes, of this publication.

(2) Note. For placement herein, a patent need only claim the threading device itself and need not claim it in combination with a material advancing means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

56, 83 and 89+, for other means permitting threading.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids, 120, for threading means in a drying machine.

57, Textiles: Spinning, Twisting, and Twining,

306, for combined twisting and waste or loose end collecting means; and subclass 353 for strand catching means.

242, Winding, Tensioning, or Guiding,

332+, 364.4, 532.7, and 562.1 for threading means associated with a winding or unwinding device.

352, Optics: Motion Pictures,

158, for self-threading motion picture apparatus.