Today in 1870, US Patent 106686 A was issued, an invention of William Gee, for his “Improvement in Apparatus for Cooling Beer.” There’s no Abstract, although in the description it includes these claims:
My invention consists in a cooler made up of a series of spiral pipes, arranged with their coils one within the another, within a spiral trough, down through which latter the beer or liquid to be cooled is allowed to run, while the cooling water passes, in an opposite direction, up or through the pipes that combine strength with a large area of cooling surface, and, being independent of the bottom of the beer-trough, provide for the more perfect cleaning of the latter.
