obliquely such as evident from fig4 so that the outward yarns are prevented from slipping down the lease rods 38 39 40 are introduced manually into the clamping jaws 47 at the height of the package and may be adjusted exactly in height by means of the mechanism 48 49 due to the shedding devices 34 and 36 the yarn sheet fig7 to 10 is divided into a group 45a situated at the top and a group 45b situated at the bottom the respective upper yarn sheet being conducted over the slide rod 23 with the next shedding change by the heald frame 34 the yarn sheet 45a previously situated in the upper position will be in the down position while the yarn sheet 45b previously situated in the lower position will get into the upper position over the slide rod 23 starting from the position of the yarn sheets 45a and 45b in fig7 to 10 the yarn sheet 45a is at the top over the slide rod 23 to provide yarn crossings at the end of the yarn package formed on drum 10 the upper yarn sheet 45a is pushed back by the slide rod 23 with the projecting portion 23a by longitudinal displacement in axial direction of the drum 10 such as evident from fig9 drum 10 will be now rotated clockwise for a partial distance by means of the drive by said rotation the lease rod 38 with its bent end portion 38a gets into the cleared space 54 from below beneath the upper yarn sheet 45a so that the latter can be taken in charge by the lease rod 38 to rest on it as a result.