Transfer tail winding device for tandem windups
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohannes E. A. Koppen, Samuel E. Workman
Life of this patent
Estimating the term…
Abstract
Yarn winding apparatus having a pair of windups one above the other. A pair of rotatable package supports for each windup are alternately movable into surface driven engagement with a drive roll. During winding packages contact the drive roll until full. In doffing, an empty package contacts the drive roll; the yarn breaks from the full package to engage the empty package. A guide plate is rotated in contact with the yarn to lift it from the traverse guides and direct it to a location outside the path of travel of the traverse guides where a transfer tail is wound.
Claims3
In a winding apparatus having a pair of windups, one above the other;
- each windup including a drive roll, a pair of rotatable package supports alternately movable into surface driven engagement with the drive roll, a yarn source, and a self threading traverse guide through which yarn advances as packages are wound on said supports, said yarn being capable of adhering to the surface of a package support to initiate a new package;
- a centering guide means positioned above the windups to direct a yarn to the approximate center of the package support of each windup in surface driven engagement with its respective drive roll when the yarn are released from the traverse guides;
- a transfer tail device comprising a flat guide plate positioned between said centering guide and the traverse guide associated with the uppermost of said windups means mounting said guide plate for pivotal movement from a position out of contact with said yarns to a yarn engaging position in which the guide plate releases the yarns from the traverse guide associated with the uppermost of said windups, said guide plate having an outer peripheral edge around which the yarns traverse, to a location outside the path of travel of the traverse guides when the yarns are engaged by the guide plate;
- and means for releasing the yarn from the traverse guide associated with the lowermost of said windups.
Dependencies are inferred from the claim text.