(57) The apparatus comprises a spindle (V) on which the bobbin (RC) is formed, and which
is axially shiftable from a retracted discharge position to an expanded working position,
so as to cooperate with a fixed extractor (E) whereby when the spindle carrying the
formed bobbin is retracted, the bobbin abuts against the extractor and is discharged.
The spindle is provided on its free end with a frontally toothed portion (D). The
spindle can be moved from a bobbin forming station (K) to a tie-in and discharge station
(K') , while the yarn (F) is maintained under tension. On the side surface of the
formed bobbin at the tie-in and discharge station, at one end of the bobbin, there
is positioned a needle (50) having a hook (150). A winding rotation is imparted to
said bobbin and to said needle so that the body ofthe needle will be enfolded by a
suitable number of turns (FX) of yarn. The yarn is then displaced to form one turn
(FX') engaging the hook of the needle, which is then stopped together with the bobbin.
The needle is retracted so that it will cause the tail end of the yarn to be bent
into a U-shape and to be passed beneath the turns. Means (54) are provided for cutting
the yarn and for retaining the leading end of said yarn. At this point, the bobbin
is discharged by retracting the spindle and subsequently the spindle is moved again
to the bobbin forming station where it is extended to its working position so that
its tooted end will engage the leading end of the yarn retained by the cutting and
retaining means and a new cycle of the winding machine can be resumed upon re-startina
the rotary motion of the soindle.
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