Device for preventing yarn loop formation and for saving suctioned yarn on winding units

An apparatus for preventing the formation of loops as yarn is wound in a cone winding unit when the cone winding unit stops winding, said cone winding unit comprising a pirn with wound yarn thereon, a bobbin adapted to receive the yarn unwound from the pirn, means for operating the winding unit at normal winding speeds, and stopping means for stopping the cone winding unit said apparatus comprising:

• a) a sensor positioned adjacent the winding unit for detecting the speed of the yarn wound thereon and for sending a signal when the speed of the yarn wound decreases;
• b) a bar positioned adjacent the pirn and moveable from a first position spaced apart from the pirn when the winding unit is operating at normal winding speeds to a second position in pressure engagement with the yarn on the pirn prior to the stopping of yarn winding;
• and
• c) an actuator connected to said bar for said movement of said bar from said first position to said second position, wherein said actuator is responsive to said signal when the speed of the yarn wound by the winding unit decreases by the stopping means so that the yarn is secured on the pirn by means of said bar in said second position.