I wanted to do a post this week about the beautiful section of the toilet.
I'm honestly not being flippant here. A toilet, regardless of its cost or manufacturer, is an elegant piece of engineered porcelain. It's designed so that gravity alone allows the bowl to be flushed clean with water. After it's flushed the water remaining in the bottom of a bowl (called the "s-trap") creates an air-tight seal that prevents unpleasant smells from traveling through the toilet up from the sewer pipe.
If we didn't poop into them on a regular basis we might all have a much greater respect for the humble toilet.
I was looking for a suitable image to illustrate all this when I came across patent number US4320756A. The idea was that people trapped in a burning high-rise building could breathe "clean" air trapped beyond the water in the S-trap I mentioned earlier.
Like the toilet itself it's a remarkably simple and design solution.