US 4,907,758 AGranted

Composite yarn carrier

AssigneesStephen S. Powel, Robert J. Darby

InventorsStephen S. Powel, Robert J. Darby

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Abstract

An end cap is releasably mounted on the end of a cylindrical hollow tube to form a reusable cylindrical yarn carrier or winding tube which carries a filamentary or fibrous yarn thereon. The end cap has a paper or wear resistant exterior surface and a rigid polymeric or metallic insert secured to and extending around the inner periphery thereof. The cylindrical hollow tube is formed of a cylindrical laminated paper outer surface and a rigid polymeric or metallic insert attached to the inner surface thereof adjacent at least one end. The rigid inserts carry threads that mate to releasably connect the end cap to the hollow tube. The abutting ends of the hollow tube and end cap, when assembled, define a peripheral starting groove therebetween. A minor portion of the peripheral groove is relatively narrow (locking portion), while the remaining major portion of the groove is wider (lead-in portion). When the yarn carrier has been emptied, the end cap is separated from the hollow tube and the residual fibers or filaments vacuumed or stripped away.

Claims14

Dependent claims

A reusable yarn carrier comprising:

(a) a composite hollow tube having an outer, substantially cylindrical laminated paper surface adapted to carry a fibrous or filamentary yarn thereon, an annular, first ring secured to the end portion of the inner surface of said hollow tube, said ring being formed of a rigid material relative to said paper;
(b) a separable end cap having an outer cylindrical surface formed of a wear-resistant material that can withstand the forces exerted by a surface drive mechanism of automatic winding machines, said separable end cap including an annular, second ring means associated therewith;
(c) said first ring and second ring means being joined by mating attachment means for releasably mounting said end cap on at least one end of said hollow tube;
(d) abutting walls of said tube and end cap defining a starting groove therebetween encircling said yarn carrier, said starting groove comprising a relatively narrow locking portion extending partially around said periphery and a relatively wider lead-in portion around the remainder of said periphery;
(e) whereby the lead-in portion guides the first few turns of a waste bunch into the locking portion and said abutting walls of said tube and end cap of said yarn carrier are separable to loosen trapped fibers and facilitate cleaning and reuse.

2 more elements

Dependencies are inferred from the claim text.