Today in 1936, US Patent 2065949 A was issued, an invention of Harry J. Sandell, for his “Beer Cooling and Dispensing System.” There’s no Abstract, although in the description it includes these claims:

The invention relates to a beer cooling and dispensing system, and has for its object to simplify and improve the efficiency of drawing beer from a storage refrigerator at one point and a dispensing 5 outlet at another.

The chief object of the invention is to provide a combination of devices adapted to contain an enclosed circulating and cooling medium, for the purpose of maintaining a uniform low temperature along a dispensing pipe contained therein.

Explanation In beer cooling and dispensing, the beer storage refrigerator is usually placed in the basement or some other convenient place that requires considerable piping and a coil to carry the beer and cool it from the storage refrigerator to the counter dispensing coil box. When this system is used, the beer leaves the cold refrigerator and runs exposed, then enters the iced coil, but due to the different go and uneven temperatures along the line of draught the beer cannot be drawn or controlled at the faucet without considerable waste.