Vintage kitchen tool baffles online users

American inventor Ezra Warner created a tool designed to pierce the lids of cans. Resembling a lever with a curved blade, this opener was clunky but effective. It was widely used by the U.S. military during the Civil War, but it wasn’t practical for home use.

In 1870, William Lyman revolutionized the can opener with a rotating cutting wheel, a design continue reading …