Today in 1904, US Patent 763606 A was issued, an invention of Carl F. Hettinger, for his “Combined Brewing Kettle, Hop-Jack Tank and Cooker.” There’s no Abstract, although in the description it includes this summary:

My invention relates to brewing-kettles used in the preparation of malt liquors, and has for its object to provide a brewing kettle which may be converted alternately into a cooker or a hop-jack tank without interfering the preparation of malt liquors.

My improved apparatus or kettle being first used as a cooker, the ingredients are the mass is then conveyed into the usual mash is treated and supplemented in the mash-tub the brewing kettle is cleaned for the reception of the wort from the mash-tub. A hop strainer is then put into position in the kettle, so that after the wort has been boiled hops may be added to the wort in the kettle and the latter be used as a hop-jack tank, as will be hereinafter fully described.

The principal object of my invention is to provide one apparatus to serve the purposes and functions of three apparatus, with bet whereby not only a material saving in the cost of installation of a brewery is gained, but also the space occupied by such apparatus may be used for other purposes or the building may be made so much smaller.

My improved combined cooker, brewing kettle, and hop-jack tank consists of a vessel, an agitator therein, a removable telescoping hop-strainer, means for removing the same, a clean-out in the bottom of said vessel, and means for heating the latter; and my invention further consists of the improvements hereinafter more fully described, and pointed out in the claims.