Today in 1935, US Patent 1996184A was issued, an invention of Edward Werthner, for his “Keg Tapping Seal.” There’s no Abstract, and the OCR was taking the day off when they digitized this one. I’ve tried to fix it where I could but some of it is just gibberish:

The usual beer keg is commonly only provided a cupped wooden bung and the dispensing means for discharging the beer as needed includes a tapered tap to be driven into the cupped bung to break out the bung bottom and their wedge fluid tightly into the bung side wall, said tap carrying the usual faucet tube or red; it often happens, however, that the side wall of the bung instead of remaining intact in the bung hole, breaks and will not fit tightly seal around the tap, or that the bung is driven completely into the keg. When such occurrences happen, not only does the keg-tapping person becomes showered with leaking beer squirting under pressure from the keg, but the gas from the beer is lost and the beer soon spoils. It is the object of my invention, however, to overcome such difficulties with the foregoing in-view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawing.