Today in 1900, US Patent 644171 A was issued, an invention of William Handler, for his “Attachment for Beer-Dispensing Apparatus.” There’s no Abstract, but in the description Handler explains that his “invention relates to an attachment for beer-dispensing apparatus,” adding that the “object of this invention is to produce what may be termed an anti-froth device, which may be applied at any point between the barrel, keg, or vessel and the discharge outlet of the dispensing-faucet, the said device operating to retard or hold back the froth,while permitting a ready outflow of the liquid, and thereby equalizing the amount of froth delivered with the liquid from the first to the last glass of liquid drawn from the vessel.”
