Today in 1954, US Patent 2678549 A was issued, an invention of Alvin N. Bloom and Harold B. Campbell, for their “Beer Cooling and Dispensing Apparatus.” There’s no Abstract, though it’s described this way in the application:

This invention relates to beer cooling and dispensing apparatus, and has for its primary purpose the provision of an apparatus of greatly improved and simplified structure, which is compact, portable and rugged, which can be installed very readily and inexpensively, which requires a minimum amount of attention, maintenance and servicing, which operates in a positive, economical, highly efficient and sanitary manner, and which is very flexible in its operation so that greatly varying amounts of beer at the proper temperature may be drawn.