The present invention provides a single end scroll-type yarn feed attachment for tufting machines characterized by independent servo-motor control of yarn feed rolls while eliminating tube banks typical of tufting machine feed attachments and produces new tufted carpet designs. ...http://www.google.com/patents/US20020037388?utm_source=gb-gplus-sharePatent US20020037388 - Independent single end servo scroll pattern attachment for tufting machine and computerized design system
