Patent ID: 6082142
Filing Date: 2000-07-04
Classification: D04B

Abstract:
Control sinker for selection and control of loop-forming motions of knitting implements of a knitting machine comprising a plurality of control sinkers assigned to respective ones of said knitting implements, each of said plurality of sinkers having a form of a stretched flat bar for use as a control element in said knitting machine that can be deflected in a guide groove of a sinker carrier of the knitting machine in the longitudinal direction of said guide groove in alternative directions, wherein said sinker carrier of said machine comprises a plurality of said guide grooves running parallel to one another and located equidistantly next to one another, for holding one control sinker at a time, with driving thereof taking place by relative movements of the sinker carrier and a cam carrier of said knitting machine, said cam carrier having a clearing cam with a clearing edge that with said relative movements passes by the control sinkers on contour edges of lug-shaped clearing feet of said control sinkers, said edges running transversely to said longitudinal sinker guide groove direction, for controlling deflections of the control sinkers, and the control sinkers each having a control spring proceeding from a base body of the respective sinker, said base body having the shape of a stretched rod, and wherein said control spring has a free end which is supported to slide on the base of the guide groove for the control sinker in said sinker carrier, and said control spring being prestressed such that the clearing feet of the control sinkers are displaced into a clearing position of drive engagement of their clearing foot for transferring deflection driving, with the clearing edge of the clearing cam of the cam carrier, furthermore the control sinkers are displaced by control elements of the cam carrier and sinker carrier from said clearing position into a base position where the drive engagement of their clearing feet with the clearing edge of the clearing cam is interrupted, in this base position the sinkers are fixed by the retaining force of a permanent magnet arrangement of said knitting machine and are released by compensatory triggering of an electronically controllable magnet arrangement of said knitting machine for passage into the clearing position, and wherein said control sinker including its control spring is made of a single-piece spring steel part, a width of said control spring, measured at right angles to a neutral bending line of said control spring in a released state, on a base side of the spring adjoining said sinker base body, has a larger value than on said free end thereof where said spring is supported on a base of its guide groove, and wherein said spring on its base side adjoins the sinker base body with smooth curvature which widens the base area of said spring.