×

Method for controlling a tufting machine

  • US 4,519,332 A
  • Filed: 12/12/1983
  • Issued: 05/28/1985
  • Est. Priority Date: 12/12/1983
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for controlling a tufting machine utilized for manufacturing a tufted carpet by stitching yarns supplied by a yarn feed roller onto a ground fabric supplied by a spiked roller by means of needles;

  • comprising;

    pre-establishing a standard supply length of a ground fabric and a standard yarn feed length, each for a predetermined unit stitch number;

    determining an actual supply length of the ground fabric and an actual yarn feed length, each for a unit stitch number by means of measured values respectively obtained from a ground fabric supply detector, a yarn feed detector, and a stitch number detector;

    comparing the measured values with the standard values; and

    automatically controlling the rotational speeds of the spiked roller and/or the yarn feed roller, respectively, to correct the supply rate of the ground fabric and/or the yarn to the standard values when the measured values exceed upper or lower limit of a predetermined allowable range for each of the standard values.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×