having a bush 10 with an axis having a different inclination to the axis of shaft 11 of course it is a long lasting and complex operation because it requires the complete disassembling of drum 1 the same operation must be usually performed in case the direction of windings laid down by the device 2 has to be reversed to adapt itself to yarns having a different twisting in this case too though it is possible to maintain if desidered the present winding step it is usually necessary to replace the whole assembly because the bush 10 must have the same axis inclination but in the opposite direction with respect to a neutral position the present invention solves the abovementioned problem by positioning between the bush 10 and shaft 11 a joint 12 fig3 and 4 preferably a ball joint by making both said joint 12 and bush 10 rotationally integral to the shaft 11 by adjusting the angular position of bush 10 as well as of bearing 9 support 8 standards 7 and column 6 taking advantage of the joint 12 and by holding said bush 10 in the preset adjustment position in this way it is also possible to obtain any desired inclination of the bush 10 with respect to the axis of shaft 11 and therefore any desired advancement step of the windings on the drum 1 it is also possible to perform said adjustments in both directions starting from.