'Bell-crank' engine, c. 1799
1795-1805 (original)
1795-1805 (original)
1720
1805-1806
1938
1884
1930 (original); 1984 (model)
1888
1848-1850
1887-1893
1887
1902
1924-1937
1777 (original); 1894 (model)
1891
1884
-1920
1867-1900
1884
1698-1744
1884-1887
1920
1901
1870
1900
1902
1840
1855
1730-1740
circa 1916