If you have a well in your garden or in the street in your village, you need a way of getting the water from the bottom of a deep hole (our well is about 18metres deep) to the surface.
As shown in a previous post, the "ye olde" (is there a French equivalent of that I wonder?) way is the method favoured in fairytales and nursery rhymes: a bucket on a rope, wound around a spindle.
Anyone who grew up before town water came to town, and anyone who has visited the countryside will have seen force pumps. They are the pumps with a long arm you pump up and down, eventually getting water. They use a series of valves creating a vacuum to lift the water and were supposedly invented by Ctesibus of Alexandria, in Egypt. The Roman writer Vitruvius mentioned this device in the first century B.C. and examples have been found in Roman cities, notably Silchester near Reading in England.
now home to the famous 'tapestry'In the garden of the château at La Celle Guenand.
presumably for night watering.