7 at the same time and symmetrically when the stem 17 is further turned the two guide clips 49 and 51 are spread apart at the same time and in the same amount and the hook 57 located between the two guide clips 49 and 51 can pass through the eye 25 of the needle 7 without touching it this ideal initial position is not shown in the figures if the axis of the needle however is located offset with respect to the intended position see fig3 guide clip 49 encounters the needle first due to the force acting on the guide clip 49 in the direction of the arrow x fig4 the plate 45 to which the two guide clips 49 and 51 as well as the hook 57 are fastened tilts in a counter clockwise fashion about axis b and centers the two guide clips 49 and 51 about the needle 7 by further rotating the stem 17 the hook 57 which now lies exactly in front of the eye 25 due to the tilting motion of the plate 45 is pushed through it and extends through the eye 25 as shown in fig1 an upper thread 63 which is held in a thread guide 61 at the needle holder 5 of the sewing machine can be threaded through to the slot 41 under the support bracket 33 and the two guide clips 49 and 51 as shown in fig8 by means of the v shaped design of the slot 41 the upper thread 63 approaches the hook 57 from below as shown in fig9 as soon as the pressure is let off of the hand lever 21 the stem 17 tilts back and the hook 57 grasps the upper thread 63 and pulls it through.