Yarn adjuster for controlling evenness of yarn tufts
First Claim
Patent Images
1. Tufting apparatus or the like including:
- yarn-applying means for applying yarn to a backing layer wherein the improvement comprises a means for positioning yarn in a loaded condition in said yarn-applying means which comprises a yarn adjuster to position yarn in said yarn-applying means by causing at least a portion of the yarn to be drawn back.
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Abstract
A yarn adjuster positioned adjacent tufting needles in a tufting machine for engaging yarn in close proximity to the tufting needles and moving it a predetermined distance to thereby control the length of the yarn on each side of the needles which controls evenness of tufts particularly when dual tufting needles are utilized to tuft U-shaped tufts. The yarn adjuster may be driven by an improved coupler point drive featuring long dwell and fast rise.
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Citations
29 Claims
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1. Tufting apparatus or the like including:
yarn-applying means for applying yarn to a backing layer wherein the improvement comprises a means for positioning yarn in a loaded condition in said yarn-applying means which comprises a yarn adjuster to position yarn in said yarn-applying means by causing at least a portion of the yarn to be drawn back. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of applying yarn bits to a backing layer comprising the steps of:
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pneumatically feeding yarn to bit-applying elements; adjusting said yarn a predetermined amount to control placement of the yarn in said bit-applying elements by causing at least a portion of the yarn to move in a variant direction; severing said yarn into yarn bits when loaded in said bit-applying elements; and applying the severed yarn bits to the backing layer. - View Dependent Claims (23, 24, 25)
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26. Tufting apparatus or the like including means for pneumatically transporting yarn from yarn storage to a tufting station, said tufting station comprising:
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dual tufting needles including thread receiving means therein; pneumatic guides through which yarn is fed; and
,means for adjusting the positioning of yarn including a means to withdraw an incremental portion of yarn from said tufting needles.
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27. Tufting apparatus or the like including means for pneumatically transporting yarn from yarn storage to a tufting station, said tufting station comprising:
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dual tufting needles including thread receiving means therein; pneumatic guides through which yarn is fed; and
,means for adjusting the positioning of yarn including a means to adjust yarn as it is being threaded in said tufting needles.
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28. Tufting apparatus or the like including means for pneumatically transporting yarn from yarn storage to a tufting station, said tufting station comprising:
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dual tufting needles including thread receiving means therein; pneumatic guides through which yarn is fed; and
,means for adjusting the positioning of yarn bits including a means to adjust yarn as it is being fed to said tufting needles and further to withdraw an incremental portion of yarn from said tufting needles.
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29. Tufting apparatus or the like comprising:
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bit-applying elements for applying yarn to a backing layer; means for pneumatically transporting yarn to said bit-applying elements; means for severing yarn into yarn bits when the yarn is loaded in the bit-applying elements, said severing means being positioned near to said bit-applying elements; and means positioned between said bit-applying elements and said severing means to adjust the yarn prior to severance.
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Specification