Fore-for-one twisting spindle for twisting machines or similar

A four-for-one twisting spindle for twisting machines of textile yarns, comprising a cylindrical basket (2), kept still and inside which a feeding bobbin (1) is supported, an upper rotating part (3) and a lower rotating part (4), situated below the cylindrical basket (2), and coaxial thereto, which rotate in opposite directions to each other and define a first passage (6) and a second passage (9) of the yarn, respectively, along the run of the yarn, said run being further defined by a deflecting element situated above the bobbin (1), a deflecting element (8) positioned along said first passage (6) and a deflecting element (12) situated along said second passage (9), said upper rotating part (3) or said lower rotating part (4) being operated by external movement transmission means and transmitting the motion to said lower rotating part (4) or to said upper rotating part (3), by means of an epicycloidal transmission device, whose internal element is integral with said lower rotating part (4) and whose outer element is integral with said upper rotating part (3), wherein the planetary elements (16, 34) rotate around themselves and are maintained in the same position by means of a planetary-holder element (18, 28, 30, 33) and are arranged so as to form two crowns, a lower crown and an upper crown respectively, the planetary elements (16, 34) of each of said two crowns transmitting forces, which are exerted between the components of said epicycloidal transmission device, along oblique force lines, the planetary elements (16, 34) of at least one of said two crowns transmitting forces converging downwards, so as to transmit the weight of the spindle, which is concentrated on said upper rotating part (3) to said lower rotating part (4).