Today in 1898, US Patent 611003 A was issued, an invention of Joseph C. Roth, for his “Keg or Barrel.” There’s no Abstract, although in the description it includes this summary:

My invention relates to sheet-metal kegs or barrels, more particularly that class of barrels employed for beer, wines, or other liquors, and it will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 represents a side elevation of a beer-keg made in accordance with myinvention. Fig. 2 is a vertical section on or about line a a, Fig. 1. Fig. 3 represents a vertical central section through one section of the in-V ner case of the keg or barrel. Fig. 4 represents an enlarged sectional elevation through a portion of a side of a keg, the section passing centrally through the bun g-hole and showing the construction thereof. Fig. 5 represents a detached top view of one of the outwardly-screw-threaded inner rings. Fig. 6 represents a top face View of the improved bung.

And here’s the original drawing filed with the patent application: