Yarn inspection system

In a yarn inspection system, comprising a source of yarn;

• a defect detector;
• a take-up stand;
• and a yarn repository;
• said source of yarn comprising multiple yarn packages, whereby during operation of said system yarn from said packages travels a yarn path as a yarn sheet past said detector, thence is converged to tow and passes through said take-up stand to said yarn repository;
• the improvement comprising:
• said take-up stand comprising a first roll, a second roll adjacent to said first roll, and a third roll adjacent to said second roll and remote from said first roll, at least one of said rolls being driven by a motor, each of said rolls being positioned for contact with any roll adjacent thereto with said yarn passing therebetween when said system is operational, said rolls being displaceable;
• and
• a switch, said switch being closed when said rolls are positioned for contact with at least one other roll, said switch opening when said rolls are displaced to stop the driving motor.

In a yarn inspection system, comprising a source of yarn;

• a defect detector;
• a take-up stand;
• and a yarn repository;
• said source of yarn comprising multiple yarn packages, whereby during operation of said system yarn from said packages travels a yarn path as a yarn sheet past said detector, thence is converged to tow and passes through said take-up stand to said yarn repository;
• the improvement comprising:
• said take-up stand comprising a first roll, a second roll adjacent to said first roll, and a third roll adjacent to said second roll and remote from said first roll, at least one of said rolls being driven by a motor, each of said rolls being positioned for contact with any roll adjacent thereto with said yarn passing therebetween when said system is operational, said rolls being displaceable;
• roll displacement means comprising a first pivot arm connected to one of said rolls, means to rotate said first pivot arm and thus displace the roll to which it is connected, and a second pivot arm connected to a second of said rolls and to the first pivot arm, whereby rotation of said first pivot arm causes said second pivot arm to rotate and thus displace the roll to which it is connected;
• and
• a switch, said switch being closed when said rolls are positioned for contact with at least one other roll, said switch opening when said rolls are displaced to stop the driving motor.