| 摘要 |
An auxilliary seed discharge means comprising a helicoid conveyor running axially with and laterally through the length of, the roll box of a saw type cotton gin and extending outwardly thereof through circular openings in the roll box heads to seed discharge chutes. Suitable bearings are provided for rotatably journaling outside the roll box. An adequately rotatable tubular casing is provided to enclose the conveyor in some embodiments. The portion of the casing inside the roll box is suitably perforated to receive clean seed therein but the portions extending out to the seed chutes are plain. The tubular casing is separately rotatably journaled outside the roll box heads. For roughly harvested cotton containing excessive foreign matter, modified embodiments are provided in which the perforated casing is omitted and special helicoid conveyors having greater conveying capacity at the discharge end(s) than at the beginning are employed. Methods of construction for special conveyors is disclosed. The conventional gravitional seed discharge common to all saw gins in general use continues to function in the normal manner without interference from the auxilliary discharge provided by this invention. The conveyors can comprise all right hand or all left hand flight, or, have both, arranged to convey the clean seed to right and left from the vertical center of the roll box according to installation requirements or ginner's preference.
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