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US 4,028,871 AGranted
Process and apparatus for producing spun yarn
AssigneeCor, Inc.
InventorFrank A. Aschenbrenner
Life of this patent
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AssigneeCor, Inc.
InventorFrank A. Aschenbrenner
Estimating the term…
A process and apparatus for producing spun yarn using an electrostatic field produced by a pair of spaced electrodes, one of which surrounds the other to isolate the electrostatic field therebetween from external physical and electrical disturbances. Staple fibers are fed into the field through an aperture in the surrounding electrode for migration in the electrostatic field to a linear zone of increased field intensity from which the fibers are withdrawn and twisted to form a spun yarn, which may be done without the use of a core yarn or with a core yarn drawn through the linear zone and subjected to a false twisting operation to collect and twist the fibers thereon. Beyond the linear zone is another zone of increased field intensity for electrostatic collection of fly and other waste material. Suction is applied to remove the fly and other waste material from the electrostatic field and also serves to draw the feeding fibers through the aperture into the electrostatic field.
A process for producing spun yarn from staple fibers using an electrostatic field comprising continuously feeding fibers to an electrostatic field, electrostatically migrating said fibers in said field to a linear zone of increased field intensity in which said fibers are generally linearly oriented while physically and electrically shielding said fibers in said electrostatic field from external physical and electrical disturbances, and twisting and withdrawing said fibers from said zone in the form of a spun yarn.
A process for producing spun yarn from staple fibers using an electrostatic field comprising continuously feeding fibers to an electrostatic field, electrostatically migrating said fibers in said field to a linear zone of increased field intensity in which said fibers are generally linearly oriented, twisting and withdrawing said fibers from said zone in the form of a spun yarn, and collecting at a spacing from said zone fly and other waste material that enters said electrostatic field but which is not withdrawn with said twisted fibers.
Apparatus for producing spun yarn from staple fibers comprising means for producing an electrostatic field having a linear zone of increased field intensity, means for continuously feeding fibers to said electrostatic field for electrostatic migration of fibers by said field to said zone, said electrostatic field producing means including means for physically and electrically shielding said fibers in said linear zone from external disturbances, and means for twisting and withdrawing said fibers from said zone in the form of a spun yarn.
Apparatus for producing spun yarn from staple fibers comprising means for producing an electrostatic field having field intensity increasing to a zone of increased field intensity, means for continuously feeding fibers to said field for electrostatic migration of the fibers by said increasing field intensity to said linear zone, means for twisting and withdrawing said fibers from said zone in the form of a spun yarn, and said electrostatic field producing means providing another zone of increased field intensity spaced from said linear zone for electrostatic collection of fly and other waste material at said another zone.
Dependencies are inferred from the claim text.