US PATENT SUBCLASS 57 / 412
.~.~.~.~ With specific feed device for opening roll

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

1 R  DF  APPARATUS AND PROCESSES {45}
400  DF  .~ Open end spinning {4}
404  DF  .~.~ Rotating chamber type {4}
408  DF  .~.~.~ With fiber separating and/or feeding {5}
412.~.~.~.~ With specific feed device for opening roll

DEFINITION

Classification: 57/412

With specific feed device for opening roll:

(under subclass 408) Subject matter wherein the fiber separating and/or feeding means utilizes an opening, combining, or carding type roller and wherein structural details of a feed device positioned to cooperate with the opening roller for feeding fibrous material to the opening roller to be disintegrated into discrete fibers are recited.

(1) Note. To be placed in this subclass, the feed device should include sufficient structural details to provide more than a nominal recitation thereof.

(2) Note. Feed rolls, silver guides, and condensers are commonly used as the feed device for the opening roller.

SEE OR SEARCH CLASS

19, Textiles: Fiber Preparation,

105, 246, and 288+ for feeding and guiding devices for carding machines or drafting frames.