way that the diameter of the opening edge is larger than that of the bottom side the centrifugal force helps guide the fiber bundle f to between the pin 46 and the wall 45b at the time the fiber bundle f moves to the normal spinning position in yarn ending mode a fifth embodiment of the present invention will now be described referring to fig2 and 23 this embodiment differs from the fourth embodiment in the structure of the restriction means and the other structure is the same in this embodiment a wall 47 for partitioning part of the yarn drawing passage from the space on the outer rotor 6 side is so formed as to protrude from the frontward wall of the recess 45 in the rotational direction of the inner rotor 11 while covering part of the yarn drawing passage a gap formed between the wall 45b and the first end portion of the wall 47 is slightly narrower than the diameter of yarn to be spun a semi columnar engaging section 47a as restriction means is formed at the first end portion of the wall 47 close to the first end portion of the inner rotor 11 in the spinning frame of this embodiment in normal spinning mode the fiber bundle f collected at the fiber collecting section 6a is drawn therefrom toward the inner rotor 11 along the wall of the outer rotor 6 then the.