A professional who doffs bobbins of yarn from spindles of spinning, twisting, or roving (slubber) frames. Responsibilities include:

• Pushes button to stop machine and depresses pedal to lower ring bar, allowing yarn to wind around base of spindle to facilitate restarting.
• Removes full bobbins of yarn from machine spindles, deposits yarn in handtruck, and places empty bobbins on spindles of machine.
• Releases pedal to raise ring bar, starts machine, and pieces up breaks in roving or ties breaks in yarn ends.
• Records information, such as doff time, date, and initials to complete company form.
• Applies grease or oil to rings, using finger or oilcan.
• May change travelers.
• May brush waste from machine.
• May be designated according to machine doffed as slubber doffer; spinning doffer; twister doffer.