This tool was invented in 1887 by Illinois farmer H. H. Perkins.
It is a corn-husking tool, also known as a "corn shucker".
Mr. Perkins called his model "the Perkins' Boss Husker",
and the metal on the instrument is marked with "THE BOSS".
This particular model was intended for right-handed use. It
fits on the hand with the metal hook facing toward the thumb.
To husk the corn cob, the hook is thrust into the top end
of the cob and twisted, tearing off the dried husk.