'Bell-crank' engine, c. 1799
1795-1805 (original)
1795-1805 (original)
1785
1745-1755
1735-1752
1750-1795
1745-1755
1770-1800
1809
1797-1804
1751-1800
circa 1805
circa 1750
1758-1769
1758-1769
1758-1769
1760-1770
1776-1780
1776-1780
1776-1780
1808
1742
1771-1800
1758-1773
1893-4
1750
1740-1753
1762
1778
1762
1783
1785
1785
1806
1748-1763
1769
1738-1777
1725-1755
1765-1806
1755
1807
1735-1754.
1750-1760
1720-1800
2000-100 BCE
1761
1720-1800
1725-1775
1761
1782-1793
1776