Today in 1908, US Patent 899201 A was issued, an invention of Gary Braybrook, for his “Beer-Faucet.” There’s no Abstract, although in the description it includes this summary:

My present invention relates to improvements in beer-faucets.

My invention consists of a novel form of metallic faucet whose valve body has a termiiial valve chai’nber above the pendent deliverynozzle whose inner end is closed by a proper hand operated valve carrying therein a proper mercury thermometer whose lower end is at all times immersed in the liquid of the valve chamber in use.