Today in 1911, US Patent 998815 A was issued, an invention of Ernst Uhlmann, for his “Beer-Making Apparatus.” There’s no Abstract, although in the description it includes this summary:
My invention relates to that portion of the beer making art wherein the wort is treated with hops, and it has for its objects to provide an apparatus for preventing the wort from acquiring an objectionable color and flavor and from a tendency to sour as a result of such treatment.
My invention is designed to overcome these objections and to provide a form of apparatus for rapidly removing the hops from the wort, which shall ‘be simple in construction and operation and require much less floor space for accommodation than apparatus commonly used for the purpose.
In carrying out my invention I remove the hops, albuminoids, and such matter from the wort while the latter is flowing from the brewing kettle to the coolers, so that the wort is freed from these matters almost immediately it leaves the brewing kettle, and does not remain in contact with the hops, etc., longer than a few seconds. Also I remove all the wort from the hops without employment of any mechanical or air pressure.