Yarn winding apparatus and process
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohn S. Dickins, III, Thomas D. Williamson
Life of this patent
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Abstract
A string-up system and apparatus, using a novel dual-slotted traverse guide, with preferential string up of a first yarn in the one slot, associated with transfer means to move a yarn, if desired, out of the first slot, so this yarn is strung up in the second slot.
Claims14
A windup, including a source of at least two yarns, a fixed guide through which said yarns advance in a plane from said source to a transverse guide from which the yarns advance as they are being wound in a reciprocating stroke on respective package supports, said traverse guide being adapted to reciprocate within first and said second limits defining a traversing zone and comprising:
- a base, a guide plate embedded in and projecting outwardly from the base, said plate having a peripheral edge that comprises a first convexly curved section, a generally straight section that is generally parallel to said plane, and a second convexly curved section, the curved sections being separated from the straight section by open-ended guide-slots that open into the curved sections;
- means for feeding a yarn from beyond said first limit into the slot adjacent said first limit;
- and means for transferring a yarn from said slot adjacent said first limit to the other slot.
An improved process for sequentially stringing up two yarns in a dual-slotted traverse guide, wherein the improvement is characterized by first stringing up one yarn in a first slot on a first side of said guide, followed by lifting said yarn out of said first slot and transferring said yarn to a second slot, and then stringing up a second yarn in said first slot.
A traverse guide comprising:
- a base, a guide plate embedded in an projecting outwardly from the base, said plate having a peripheral edge that comprises a first convexly curved section, a segment with a generally straight section that is generally parallel to said base, and a second convexly curved section, the curved sections being separated from the said segment with the generally straight section by open-ended guide slots that open into the curved sections, said segment projecting outwardly from said base beyond said curved sections.
A windup, including a source of at least two yarns, a fixed guide through which said yarns advance in a plane from said source to a traverse guide from which the yarns advance as they are being wound in a reciprocating stroke on respective package supports, said traverse guide being adapted to reciprocate within first and second limits defining a traversing zone and comprising:
- a base, a guide plate embedded in and projecting outwardly from the base, said plate having a peripheral edge that comprises a first convexly curved section, a generally straight section that is generally parallel to said plane, and a second convexly curved section, the curved sections being separated from the straight section by open-ended guide-slots that open into the curved sections;
- means for feeding a yarn from beyond said first limit into the slot adjacent said first limit;
- and means for feeding a yarn from beyond said second limit into the slot adjacent said second limit.
Dependencies are inferred from the claim text.