A professional who tends machine that applies grease and wax to unfinished felt hat bodies to stiffen and finish felt. Respnsibilities include:

• Mounts rolls of cloth impregnated with grease and wax on holders of machine and threads cloth under feed rollers, between machine guides, and over applicator pads.
• Fits hat body over block mounted on arm of machine.
• Presses lever to start machine that forces body against applicator pads to finish and stiffen body.
• May be designated according to part of hat body processed as brim-greaser operator; crown-greaser operator.