Method and device for fastening the yarn end of a bobbin

In a method for fastening a yarn end (2) on a bobbin (1), comprising:

• a) placing the bobbin (1) horizontally on two spaced rotatable supports which support the bobbin along two lines parallel to the axis of the bobbin,
• b) creating with a suction nozzle a partial vacuum in a space located near the bobbin (1), the partial vacuum being sufficient to suck the yarn end (2) into said nozzle.
• c) rotating said supports in a direction to cause the bobbin (1) to rotate in order to wind the yarn end (2) on the bobbin, and
• d) fastening said yarn end (2) on the bobbin (1);
• the improvement wherein, while step (b) is being performed, rotating said supports in a direction opposite the first-mentioned direction to unwind the yarn end (2) so that this end can engage by suction to a sufficient extent within said space located near the bobbin (1), said fastening comprising the steps of inserting a needle provided with an end hook into a corner of the bobbin in the direction of the yarn which is engaged in the nozzle and transversely to said yarn;
• engaging the yarn in the hook of the needle;
• and withdrawing the needle from the bobbin in order to engage the yarn between the yarn windings of said corner of the bobbin.