Today in 1975, US Patent 3865276 A was issued, an invention of Hank A. Thompson, for his “Portable Keg Tapper.” Here’s the Abstract:
Portable apparatus is provided for tapping a beverage container such as a beer keg. A portable ice container adapted to be supported by the top of the keg has an opening in the bottom communicating with the tapping aperture of the keg. A dispensing faucet is carried by the ice chamber. A beverage delivery conduit is formed into a cooling coil inside the ice chamber. The inlet of the conduit terminates in a releasable coupling adapted to be attached to a conventional tapping pipe. The outlet of the conduit communicates with the dispensing faucet.