'Bell-crank' engine, c. 1799
1795-1805 (original)
1795-1805 (original)
1848
1809
1797-1804
circa 1805
1808
1825
circa 1840
1827
1934
1827-1850
1832
1845
1849
1845
1850
1794
1850
1841
1837
1826
1842
1800-1830
circa 1800
1845
1808
1847
1893-4
1793-1803
1834
1834
1834
1821-1831
1825-1835
1829
1837
1837
1840
1810-1817
1837
1850
1849
1839
1812
1842
1837
1822-1840
1803-1828
1835
1846