Today in 1965, US Patent 3173586 A was issued, an invention of Edward A. Pawson, for his “Beer Barrel Faucet Attachment.” There’s no Abstract, but the description states that the “invention relates to a novel beer barrel faucet attachment whereby beer barrels may be tapped and in particular relates to a barrel unit and a tap unit which is used in connection with barrels or kegs of the type in common use. These barrels to which my attachment is fastened have an opening of standard size and shape in one wall thereof. More specifically:

My invention relates to an attachment of the character stated which is attached to a single opening in the wall of a barrel or keg and which is so constructed that the same attachment provides a means of admitting a gas under pressure into the barrel and also to draw beer from the keg through this same attachment.