Today in 1905, US Patent 783521 A was issued, an invention of Joshua W. Harris, for his “Beer Cooling Apparatus.” There’s no Abstract, although in the description it includes this summary:

This invention relates to certain improvements in devices of that class employed for the cooling of beer and other beverages, and has for its principal object to construct a novel form of cooling-tank in which any desired quantity of liquid may be retained in accordance with the demand.