Today in 1916, US Patent 1182675 A was issued, an invention of August Goetz, for his “Beer Tap.” There’s no Abstract, although in the description it includes this summary:

Among the principal objects which the present invention has in view are: to provide a tap of the character mentioned with means for closing the movable member preliminary to separating it from the stationary member of said tap; to provide a drawoff pipe with a closable key valve adapted to open the draw-off valve of a tap, said key valve being arranged for closure as a preliminary to the closing of the draw-off valve; to provide a handle-like pipe-connecting extension for the movable member of said key valve; and to provide a pressure supply pipe and a liquid-delivering pipe with means for automatically opening and closing the same when connecting to or disconnecting from a liquid supply.