end of an actuator 23 see fig2 and can be rotated in the lowered position about axis a this rotation is done by means of a coulisse 24 located at the upper section of the actuator 23 a pin 26 that is fastened to the stem 17 engages this coulisse lowering and tilting the threader 19 in the described manner is known from the state of the art therefore it is not described in further detail a known arrangement can be found in de 914815 the device abbreviated as u201c threader 19 u201d includes a support 27 which in the embodiment shown in fig3 is cylindrical with which the threader 19 can be coupled to the lower end of the stem 17 a swivel arm 29 is attached to the support 27 the support 27 and the swivel arm 29 are preferably manufactured in a single piece and are preferably made of plastic a thread guide sheet 31 wraps around both the support 27 to some extent as well as the swivel arm 29 and extends out tangentially over the support 27 in the shape of a downward facing support bracket 33 and ends to the side of and away from the end of the swivel arm 29 as a bent angled section 35 acting as an feed plate 37 an.