PATTERN CONTROL FOR TUFTING MACHINES

• US 3,835,797 A
• Filed: 11/11/1971
• Issued: 09/17/1974
• Est. Priority Date: 11/11/1971
• Status: Expired due to Term

• Current Assignee: Aud J. Franks, Will A. Johnson
• Original Assignee: Aud J. Franks, Will A. Johnson
• Inventors: Franks, Aud J., Johnson, Will A.
• Primary Examiner(s): Boler, James R.
• Application Number:
  US05/197,714
• Time in Patent Office: 1,041 Days
• Field of Search: 112/79R,79A,266,254,255 74/571,568,117,390,393
• US Class Current: 112/80.73
• CPC Class Codes: D05C 15/32 by altering the loop length

Abstract

A yarn control roller arrangement for varying the amount of yarn supplied to the tufting needles at different times to vary the pattern tufted. A large metal roller is eccentrically supported on opposite ends on respective short end shafts which are concentrically mounted in journal bearings on the frame of the tufting machine and eccentrically attached to the end of the roller by insertion in a metal plug held by set screws in the hollow steel roller. The end of the short shaft in the roller has a series of peripheral grooves each representing a position. The individual yarns are led side-by-side along the length of the roller on opposite sides thereof and the eccentric rotation of the roller on each revolution bends the yarns outwardly from the axis of the shaft thereby delivering more or less yarn depending upon the position.

Claims

1. In a pattern control device:

a. an eccentrically mounted pattern control member having a plurality of yarns side-by-side in contact therewith, b. a support member mounted on opposite ends of said pattern control member and in eccentric relation to the center of said pattern control member, said supports being mounted concentrically in bearings stationarily supported whereby eccentric operation of the pattern control member against the yarn varies the path of the yarn to change the amount of yarn delivered to the needle thereby controlling and varying the pattern, c. said pattern control member being adjustable selectively to change the eccentricity thereof, d. said pattern control member including an elongated member, such as a cylinder, having an adjustable support on each end, said adjustable support being adjustable to change the eccentricity and comprising a support member connected to said elongated member and offset and offcenter therein, said support member being adjustable on said elongated member to vary the eccentricity thereof and being connected on said elongated member by an adjustable member engaged therebetween, there being a plurality of positions on said support member in which said adjustable member engages said support member, e. said support member being inserted in the end of said elongated member and connected offcenter therein, f. grooves on the periphery of said support member in which said adjustable member is engaged and a ball bearing in said groove, g. a set screw operable against said ball bearing.

2. The device in claim 1:

a second set screw preventing disengagement between said support member and said elongated member.

3. The device in claim 1:

said elongated member being a tube, a plug in saiD tube, a hole in said plug in which said support member is inserted.