de energized and contact c 1 r 5 returns to its open position in this manner valve v 2 is again closed at this time the texturizing apparatus and the control apparatus are in the shutdown or 34 off 34 condition in order to provide shutdown during continuous operation of the texturizing apparatus due to a change in position of the end of the yarn plug within plug guide 8 or a break in the yarn in front of or behind the yarn guide 8 limit switches ls 1 and ls 2 are placed in parallel with relay r 3 via line 20 and lines 21 and 22 respectively this relay may be energized by either one of the limit switches r 3 is operatively associated with normally closed relay contacts c 1 r 3 and c 2 r 3 and normally open relay contact c 3 r 3 upon energization of one of the limit switches normally closed contacts c 1 r 3 and c 2 r 3 are opened thereby causing de energizing of motor m 1 of yarn take up roll 9 and closing of valve v 1 in steam inlet pipe 6 also normally open contact c 3 r 3 is closed.