A professional who tends automatic yarn-winding machine, equipped with stationary or traveling knotter and traveling winding units that move around machine, to transfer yarn from bobbins to cones or tubes. Responsibilities include:

• Places bobbins in pockets of feeder magazine and pulls ends of yarn over suction tube opening through which yarn is drawn into knotter.
• Observes machine operation and signal lights to detect machine malfunctions, exhausting supply packages, full packages of yarn, and tangled yarn.
• Doffs packages when light indicates package is filled.
• Replaces tubes or cones on spindles.
• Laps strands of yarn around cones or tubes to start yarn winding.
• Presses pedal or button to stop and control speed of machine, according to flow of work.
• Notifies machine fixer when malfunction occurs.