Today in 1881, US Patent 237884 A was issued, an invention of William Mainzer and John Singer, for their “Cask for Beer and Other Liquids.” There’s no Abstract, but the application states that “the object of this invention is to furnish casks for holding beer and other liquids, so constructed that they can be safely handled and transported without detaching the faucets, and can thus be furnished to the consumer with faucets applied ready for use, and can be returned to be refilled without detaching the faucets.”