Sewing – Special machines – Embroidering
Reexamination Certificate
2000-01-14
2001-05-15
Izaguirre, Ismael (Department: 3741)
Sewing
Special machines
Embroidering
C112S302000
Reexamination Certificate
active
06230638
ABSTRACT:
The present invention relates to a system for directional air enhancement of the performance of textile tufting machines. Both apparatus and method for such directional air enhancement are described herein.
BACKGROUND
Textile tufting machines insert yarns into a base fabric layer, which may be a woven, knit, or non-fibrous material in the form of a plane of base fabric material having a substantial degree of integrity. In tufting machines, yarns of tuft material are typically stitched into such a base fabric by a series of needles that penetrate the base fabric into which the tuft yarn is inserted.
The advantageous air enhancement system of the present invention is useful with tufting machines such as those described in Dedmon U.S. Pat. No. 4,852,505 and/or Dedmon U.S. Pat. No. 5,143,003, both of which are hereby entirely incorporated by reference herein, as well as the prior art tufting machines described in and/or cited against the Dedmon '505 and/or '003 patents, as well as other known tufting machines.
BRIEF SUMMARY OF THE INVENTION
An object of the present invention is to prevent entanglement of yarn or fiber tails extending from one or more adjacent needles to thereby provide a more uniform tufted textile product.
The foregoing object and others are achieved in the present invention where in a tufting machine for inserting yarns into stitching in a base fabric, which machine has one or more needle bars, a reciprocating carrier for the needle bar(s), a support for a base fabric in a plane substantially transverse to the reciprocation direction of the carrier, and needles carried by the needle bar(s) for penetrating the fabric, the machine also includes means for delivering a stream or sheet of air adjacent the base fabric plane toward the needles and substantially parallel to that plane, with the air stream or sheet moving faster than and in substantially the direction of movement as a base fabric being tufted by the machine, for aligning substantially parallel to the direction of base fabric movement fiber or yarn tails extending from the needles.
REFERENCES:
patent: 3263631 (1966-08-01), Freeman
patent: 3371632 (1968-03-01), Snyder et al.
patent: 3611958 (1971-10-01), Rutledge
patent: 3824939 (1974-07-01), Spanel et al.
patent: 4316421 (1982-02-01), Ketterer
patent: 4852505 (1989-08-01), Dedmon
patent: 5143003 (1992-09-01), Dedmon
Browning Tommy P.
Ownbey Charles J.
Whitener Michael K.
Izaguirre Ismael
Masland Carpets, Inc.
Parkhurst & Wendel L.L.P.
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