Multiple yarn feed circular knitting machine, in particular for stockings

A circular knitting machine comprising a plurality of yarn feeds, a needle cylinder having an axis, longitudinal tricks in said needle cylinder, needles in said tricks, jacks in said tricks below said needles, selectors in said tricks below said jacks, said needles, jacks and selectors having butts thereon, and further comprising cams for raising and for lowering said needles, cams for raising and for lowering said jacks, cams for raising and for lowering said selectors, said cams respectively engaging said butts of said needles, jacks and selectors, means for rotating said needle cylinder relative to said cams about said axis, a plurality of selection positions associated with said plurality of yarn feeds, said selectors being rockable about a fulcrum and being selectable at said selection position for selectively activating and inactivating said needles, wherein said selectors comprise respective shanks and said tricks comprise a portion wherein said shanks of said selectors are slideable and which is situated at a greater distance from said axis than another portion of said tricks wherein said jacks are slideable, and wherein said selectors further comprise an appendix for engaging said jacks, said appendix extending radially inwardly from said shank toward the needle cylinder axis, and said fulcrum of said selectors being located at a radially outer edge of said jacks, said cams for raising said selectors having a lower amplitude than said cams for raising said jacks, and said selectors being lowered by said selector lowering cams independently of said jacks such that said selectors reattain a selection position when the respective jacks substantially reach a lowest point defined by said jack lowering cams.