Method and apparatus for pattern tufting pile fabrics without loop robbing

• US 3,095,841 A
• Filed: 09/24/1957
• Issued: 07/02/1963
• Est. Priority Date: 09/24/1957
• Status: Expired due to Term

• Current Assignee: Hyde W. Ballard, John E. Smith
• Original Assignee: Hyde W. Ballard, John E. Smith
• Inventors: Ballard, Hyde W., Smith, John E.
• Application Number:
  US03/685,968
• Time in Patent Office: 2,107 Days
• US Class Current: 112/80.54
• CPC Class Codes: D05C 15/32 by altering the loop length

Claims

1. THE METHOD OF TUFTING A PILE FABRIC TO PROVIDE VARIOUS HEIGHT PILE PROJECTIONS IN THE SAME TRANSVERSE AND LONGITUDINAL ROWS WHICH COMPRISES SUPPLYING A SERIES OF YARN ENDS TO THE NEEDLES OF A TUFTING MACHINE UNDER VARIOUS DEGREES TENSION, INSERTING ALL OF SAID YARN ENDS TO A MAXIMUM DEPTH THROUGH A GROUND FABRIC, HOLDING SAID YARN ENDS ON THE OPPOSITE SIDE OF SAID GROUND FABRIC;

APPLYING AN ADDITIONAL TENSION INCREMENT TO ALL OF SAID YARN ENDS AT APPROXIMATELY THE POINT OF MAXIMUM INSERTION, RELEASING SELECTED PILE PROJECTIONS DUE TO SAID ADDED INCREMENT OF TENSION, AND PARTIALLY WITHDRAWING SAID RELEASED PROJECTIONS THROUGH THE GROUND FABRIC AFTER MAXIMUM INSERTION AND BEFORE MAXIMUM ELEVATION OF THE NEEDLES.