Today in 1915, US Patent 1190841 A was issued, an invention of Alexander Almasy and Joseph Bacha, for their “Beer Strainer.” There’s no Abstract, although in the description it includes this summary:

This invention relates to beer strainers.

The object of the invention resides in the provision of a device of the character named adapted to be incorporated in a beer dispensing system between the supply and the dispensing faucet for the purpose of separating all solid impurities from the beer and trapping same.

A further object of the invention resides in the provision of a beer strainer embodying an improved construction whereby same may be easily cleaned by separating the component parts thereof.