Today in 1897, US Patent 587987 A was issued, an invention of George Mills, for his “Means For Aerating and Refrigerating Liquids.” There’s no Abstract, although in the description it includes these claims:

My invention relates to means for aerating and refrigerating liquids, and has particular reference to a pressure apparatus for forcing beer or other liquids from a supply-cock to the faucet by means of a coupling-body of novel and convenient construction, and an air and draw-off pipe leading into the cock to a point near the bottom thereof in connection with the coupling-body.