Device for feeding yarn or yarns for knitting machines for hosiery or the like

A device for feeding yarn or yarns for knitting machines for hosiery or the like, comprising a supporting structure which supports at least one yarn finger which has an elongated shape and is pivoted, at an intermediate portion thereof, to said supporting structure about a corresponding rotation axis and having, proximate to a longitudinal end thereof, a passage for the yarn or yarns to be fed to the needles of the knitting forming machine, an electromagnetically actuated device being provided which acts on command on said at least one yarn finger for its rotation, with respect to said supporting structure, about the corresponding rotation axis, from an inactive position to at least one active position, which is angularly spaced with respect to said inactive position about said rotation axis, or vice versa, wherein said electromagnetically actuated device comprises at least one magnet which is fixed to said at least one yarn finger and at least one electric coil which is laterally adjacent to said at least one yarn finger and is connected to said supporting structure, said at least one electric coil being able to be supplied electrically to generate a magnetic field that interacts with said at least one magnet to actuate the rotation of said at least one yarn finger about the corresponding rotation axis with respect to said supporting structure.