Improvements in mechanisms to produce irregular effects with different appearances in the warp knitting machine and with conventional spinning

摘要

Improvements to mechanisms intended to produce irregular effects with different appearances in warp knit fabrics with conventional loom and yarn, wherein cam shafts (1, 2) are provided, which may have, in addition to a rotation movement with distinct speeds in order to establish the length of the design, a controllable translation movement which establishes the tension depth and other movement, also controllable, which determines the intermittency degree of tension in the warp yarns of one or more warp beams, which cams (3, 4) act on the curved arms (5, 6) of guide forks (7, 8) which are identical and alternately opposite, these arms oscillating on corresponding axles (9, 10) and being guided between pairs of vertical plates (11) which are adjacent and equidistant to said axles, these plates being passed through by two rods (12, 13) on which guide forks (7, 8) bear when the cam does not act thereon, and passed through by pairs of parallel rods (14, 15) which form guides for the yarns passing between arms of the forks (7, 8).