A professional who tends machines that draw out, combine, and twist two strands of roving into single strands. Responsibilities include:

• Observes machines to detect breaks in roving or nearly exhausted bobbins in creels.
• Replaces nearly empty bobbins on creels with full bobbins.
• Stops machine, threads flyer, and pieces up broken roving.
• Removes flyers and doffs bobbins of roving when machine stops automatically.
• Sets empty bobbins on spindles, replaces flyers, and starts machine.