S-Bend – Modern public sanitation

50 Things That Made the Modern Economy

If you live in a city with modern sanitation, it’s hard to imagine daily life being permeated with the suffocating stench of human excrement. For that, we have a number of people to thank – not least a London watchmaker called Alexander Cumming. Cumming’s world-changing invention owed nothing to precision engineering. In 1775, he patented the S-bend. It was a bit of pipe with a curve in it and it became the missing ingredient to create the flushing toilet – and, with it, public sanitation as we know it.

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