Today in 1938, US Patent 2141221 A was issued, an invention of John Panagopoulos, for his “Beer Drawing and Cooling System.” There’s no Abstract, although in the description it includes these claims:

This invention relates to a beer drawing and cooling system.

The principal object of this invention is the provision a beer drawing and cooling system formed in a compact unit.

A further object of this invention is the provision of refrigeration coils formed as a part of the beer drawing and cooling system.

A further object is the provision of a beer drawing and cooling system provided with means for circulating a cooling agent through a plurality of beer kegs each having a heat exchanging device incorporated therein.

A still further object is the provision of a beer drawing and cooling system designed to convey beer or similar beverages from the keg to the dispensing spigot, and cool it at the same time.

The beer drawing and cooling system shown and described in this application has been designed so as to form as simple and compact a unit as possible, the entire system being self contained, with of course the exception of a refrigerant compressor which can be readily positioned along side of the unit when in operation. The unit has been designed to cool and dispense beer or similar beverages from one or more kegs as desired, and is particularly adapted for multiple keg installations utilizing kegs of the kind described above.