
Demainbray's Newcomen engine model
1720
1720
1884
1888
1887-1893
1938
1930 (original); 1984 (model)
1887
1848-1850
1805-1806
1795-1805 (original)
-1920
1867-1900
1891
1902
1777 (original); 1894 (model)
1924-1937
1884
1902
1870
1901
1920
1884
1900
1840
1855
1698-1744
1884-1887
1730-1740
circa 1916