Capstan rollers for tufting machine yarn feed
First Claim
1. In a tufting machine of the type having a plurality of yarns supplied to needles reciprocated through a backing fabric and a pattern control yarn feed attachment with a plurality of independently driven yarn feed devices,an improvement comprising a first driven capstan roller located intermediate the yarn supply and the independently driven yarn feed deviceswherein the plurality of yarns is wrapped completely about a circumference of the capstan roller and proceeds through a pattern control yarn feed attachment to the needles.
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Accused Products
Abstract
A capstan roller assembly is provided between the yarn supply and scroll type yarn feed attachments for a tufting machine in order to minimize the underfeeding of yarn to the pattern being tufted due to irregularities in the feeding of the yarn from the yarn supply.
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Citations
27 Claims
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1. In a tufting machine of the type having a plurality of yarns supplied to needles reciprocated through a backing fabric and a pattern control yarn feed attachment with a plurality of independently driven yarn feed devices,
an improvement comprising a first driven capstan roller located intermediate the yarn supply and the independently driven yarn feed devices wherein the plurality of yarns is wrapped completely about a circumference of the capstan roller and proceeds through a pattern control yarn feed attachment to the needles.
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10. A capstan roller assembly adapted for use intermediate a yarn supply and a pattern control yarn feed attachment of a tufting machine comprising:
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first and second capstan rollers being positioned proximate to and parallel with one another for rotational movement; the first and second capstan rollers having associated, intermeshing spur gears for rotational communication with one another; a drive belt in communication between a motor and the first capstan roller; wherein yarns proceed from the yarn supply, between the first and second capstan rollers and thence to the pattern control yarn feed attachment. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A capstan roller assembly adapted for use intermediate a yarn supply and a pattern control yarn feed attachment having a plurality of independently driven yarn feed devices supplying yarns to needles of a tufting machine comprising:
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a first capstan roller being positioned wherein a bushing is mounted on each end of the roller and each bushing is received in an opening in a capstan roller bracket for rotational movement of the capstan roller; and a drive belt in communication between a motor and the first capstan roller; wherein yarns proceed from the yarn supply, about the first capstan roller and thence to the pattern control yarn feed attachment. - View Dependent Claims (18, 19)
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20. In a tufting machine of the type having a plurality of yarns supplied to needles reciprocated through a backing fabric and a pattern control yarn feed attachment with a plurality of independently driven yarn feed devices, an improvement comprising of first driven capstan roller located intermediate yarn supply and the independently driven yarn feed devices and a second capstan roller located proximate and parallel to the first capstan roller,
wherein the plurality of yarns proceeds from the yarn supply and is wrapped around at least 180° - of the first capstan roller which is rotationally driven in a first direction and further wrapped around at least 180°
of the second capstan roller which is rotated in the opposite direction, and thence to the independently driven yarn feed devices of the pattern control yarn feed attachment. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
- of the first capstan roller which is rotationally driven in a first direction and further wrapped around at least 180°
Specification