are available it serves to limit the lateral deviations of the union point 13 with respect to the direction parallel to the length of the carrier 21 it also serves to generate the thread breaking reaction for the remaining fiber when one of the individual fibers 11 39 or 12 39 breaks this remaining fiber moves from the delivery roller pair 10 to the spindle 15 and is illustrated by way of example in fig1 and designated at 14 39 this fiber break guard 22 has a beam 23 attached firmly to the carrier 21 which is stiff and hook shaped on this hook shaped beam is a pivotally mounted fiber guide 24 made of a bent stiff wire which pivots parallel to the lengthwise direction of the carrier 21 this fiber guide 24 juts out with its free upper basically straight arm 25 into the normal operational position of fig2 between the two individual fibers 11 39 12 39 and as a consequence of its own weight which tends to turn it in a clockwise direction in relation to fig2 lies upon the union point 13 of the two individual fibers 11 39 12 39 and is thus pivoted along with the union point 13 during operation as a result of its location on the union point this fiber guide 24 serves to guide the yarn 14 in order that.