Pattern control for tufting machines

Claim 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.