Today in 1971, US Patent 3559869 A was issued, an invention of John J. Reynolds, for his “Beverage Cooler.” Here’s the Abstract:
The application discloses a seamless, corrugated paper container having a top opening larger than its base and therefore capable of being nested with like containers. There is disposed therein a keg, bottle or the like of beverage desirably maintained in a cool state. The container may be coated with a moisture proof plastic and a coolant, such as ice, is disposed between the keg and the inner wall structure of the container. The latter is provided with a breakable aperture portion to receive a spigot assembly which communicates with the interior of the keg. The container also has a weakened area to receive, if desired, a drain hose, such area being below the expected water level of the container when the ice is substantially melted. Alternatively, the container is usable as an ice bucket in which case the weakened portions are not broken through.