In 1812, British inventor Sir William Congreve patented a manual sprinkler system using perforated pipes along the ceiling.
The system was designed by William Congreve was covered by patent No 3606 dated the same year.
This resulted in an improved method of extracting saltpetre and consequently higher quality gunpowder.
William Shakespeare | William Laud | William Blake | Sir | William | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | Sir Walter Scott | William Shatner | William Faulkner | William Randolph Hearst | William Wordsworth | William Tecumseh Sherman | William Hogarth | Prince William, Duke of Cambridge | William Penn | William Jennings Bryan | William Gibson | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna | William Hague | William III |
In 1820 Donkin worked with Sir William Congreve on preventing the forgery of excise stamps, using a method of two-colour printing with compound printing plates.