Who devised the famous screw, used to raise the level of water?
Screw turbine connected to a generator through a gearbox. The Archimedean screw is an ancient invention, attributed to Archimedes of Syracuse (287–212 BC.), and commonly used to raise water from a watercourse for irrigation purposes. In 1819 the French engineer Claude Louis Marie Henri Navier (1785–1836) suggested using the Archimedean screw as a type of water wheel. In 1916 William Moerscher applied for a U.S. patent on the hydrodynamic screw turbine. The Archimedean screw turbine is applied on rivers with a relatively low head (from 1 m to 10 m) and on low flows (0.01 m³/s up to around 10 m³/s on
Screw steamer the principal designer of the monitor class of vessels. Many famous ships were screw steamers, like the RMS Titanic and RMS Lusitania. These massive leviathans had three or four propellers. Ships under two-hundred meters usually only had two or one propellers. Screw steamer A screw steamer or screw steamship is an old style term for a steamship or steamboat, powered by a steam engine, using one or more propellers, also known as screws, to propel it through the water. Such a ship was also known as an 'iron screw steam ship'. In the 19th century, this designation was normally used