doffer

Noun



 * 1)   In a carding machine, a device such as a revolving cylinder or a vibrating bar with teeth,  that doffs, that is to say strips off, the carded cotton or other fiber from the cards; or a hand tool for the same function in smaller machines or in manual carding.
 * 2) A worker who replaces full bobbins by empty ones on the throstle or ring frames. The job was often done by children.
 * 3) * 1942 Eric Knight The Flying Yorkshireman
 * For Sam was young then, and worked as a collier lad. It was long before he went into the mill and invented his famous self-doffing spindle.

Etymology 1
From,.

Noun

 * 1) male dove, a cock pigeon