The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1984
Filed:
Sep. 03, 1982
John H Sumner, Greensboro, NC (US);
Burlington Industries, Inc., Greensboro, NC (US);
Abstract
A method and apparatus for open-end spinning of novelty yarn produces novelty yarns in a simple manner. A sliver is fed to the fiber separating device of an open-end spinning apparatus to form distinct fibers, the fibers are air transported in a fiber flow path to the twisting device, controlled formation of effects (particularly slubs) is effected during air transport of the distinct fibers in their path, the formed effects are intermittently passed to the twisting device (e.g. pseudo-randomly), the fibers fed to the twisting device are twisted into a continuous strand of effect yarn (particularly slub yarn), and the continuous strand of effect yarn is taken up. The controlled formation of effects may be accomplished in a number of manners: introducing a needle making an angle of 25.degree.-45.degree. with respect to the direction of fiber flow into the fiber flow path in the transport section; pivoting an elongated member about an axis perpendicular to the direction of fiber flow so that a free end thereof engages, or substantially engages, a wall of the transport section to collect fibers; or by pivoting an elongated member about an axis skew with respect to the direction of fiber flow, into contact, or substantial contact, with a wall of the transport section.