Today in 1902, US Patent 710631 A was issued, an invention of Paul A. Johnson, for his “Bung and Bung Attachment.” There’s no Abstract, although in the description it includes this summary:

My invention relates to an improved bung and faucet for kegs or barrels for beer, ale, and other liquids; and the object thereof is to provide a tight bung easily put in place and a faucet so constructed that said bung may be readily opened and the contents of the keg or barrel removed therefrom at will.