A professional who tends machine that inserts and glues cork, paper, plastic, or aluminum foil in bottlecap shells. Responsibilities include:

• Pours glue into pot.
• Turns valves to adjust gas flame for heating glue and to regulate flow of glue into machine.
• Mounts roll of lining material on machine spindle and starts machine.
• Observes discs and shells flowing from hopper into machine and pries jammed discs or shells loose, using poker.
• Examines glued shells on conveyor and rejects bent shells and offcenter or chipped discs.
• Pries glued disk from sample shell, using pick, observes quantity and texture of glue on sample, and adjusts valves to maintain specified temperature and rate of flow of glue.