https://en.wikipedia.org/wiki/Flush_toilet#Washout_toilet
>Washout pans were among the first types of ceramic toilets invented and since the early 1970s are now only found in a decreasing number of localities in Europe.[citation needed] A washout toilet is a kind of flush toilet which was once predominantly used in Germany, Austria and France. It was patented in Britain by George Jennings in 1852 and remained the standard toilet type in Britain throughout the 19th century.[citation needed]
>Examples of this type of toilet can be found in Austria, the Czech Republic, Germany, Hungary, the Netherlands, and some regions of Poland, although it is becoming less common.