Today in 1902, US Patent 713975 A was issued, an invention of Philipp Forg, for his “Bung and Tapping Device for Beer-Barrels.” There’s no Abstract, although in the description it includes this summary:

The object of this invention is to provide an improved bung for beer-barrels and also an improved beer-barrel tapping device which is adapted to be used in connection therewith; and with these and other objects in view the invention consists in a beer-bung for beer-barrels and a tapping device for beer-barrels constructed as hereinafter described and claimed.