Automatic sewing machines intended for the realization of stitching for decorative purposes, joint seams, applications of appliqués with logos or of other sorts, or fasteners, whose operations are controlled electronically through a microprocessor. Usually the automatic sewing machines operate by moving horizontally a work table, onto which the piece in production is placed, along a horizontal plane, under a fixed stitching head fitted with a vertical movement in synchronism. The interventions are programmable, and the operator’s task is limited to loading pieces and starting up the stitching unit.