Abstract: A circular knitting machine and a jacquard pattern control mechanism therefor is provided in which knitting instrumentalities slidably mounted in grooves in a rotating member, such as a needle cylinder, sinker cap or dial, are controlled by a rocker bar supporting member slidably mounted in each groove behind the knitting instrumentality, the rocker bar supporting member having at least one butt thereon, a rocker bar pivotally mounted on the rocker bar supporting member and having magnetically attractable sections at opposite ends thereof, a magnetic attraction device selectively attracting the magnetically attractable sections of the rocker bar to pivot the rocker bar to control the selection of knitting instrumentalities to be moved from inactive to active positions and a cam system for moving the rocker bar supporting member and selected knitting instrumentalities.

Abstract: Spring jacks are supported for vertical movement in the grooves of the needle cylinder below the needles and select the needles for the control cam to move from the welting position to the knitting or tucking position and to return the needle to the welting position. Jack actuating cams move the spring jacks upwardly to move the needles into operative position with respect to the control cam. The spring jacks are resilient and deflect from an active position to an inactive position out of operative association with an actuating cam. A pattern mechanism selects individual spring jacks in accordance with a predetermined pattern. A selector jack is mounted in each groove in the needle cylinder below the spring jack for limited inward and outward movement and an upper end portion engages a lower end portion of the spring jack. A stack of selector slides operate with the pattern mechanism and each of the selector slides is mounted for individual movement from inactive positions to active positions.