The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1985
Filed:
Sep. 24, 1984
Gary L Ingram, Ooltewah, TN (US);
Ian Slattery, Hixson, TN (US);
Spencer Wright Industries, Inc., Chattanooga, TN (US);
Abstract
A tufting machine has apparatus for feeding the backing material at a first speed for forming tufts having a backstitch of a first length and periodically selectively increasing the feeding rate to a second speed to form tufts having a backstitch of an increased length. The longer backstitch may be a plurality of stitches slightly longer than the first length or a single elongated backstitch. The fabric produced may have a series of tufts projecting from the surface of the backing material in areas having one or more yarn densities and separated by gaps where no tufts project above the surface, the gaps resulting from the elongated backstitches on the reverse side of the material. The apparatus for providing backstitches including the gaps has an intermittent drive which provides an output only during a small portion of the input. A drive shaft is drivingly connected to the feed rollers of the tufting machine and is connected to the input of the intermittent drive through a first one-way clutch and through a second one-way clutch to a driveable member on a control shaft driven by the output of the intermittent clutch. A pattern controlled air operated tooth clutch selectively couples the driveable member to the control shaft. Another pattern controlled air clutch may be utilized to drive the control shaft for providing backstitches slightly longer than the first length.