| LNWR Samson Class | |
| Powertype: | Steam |
| Designer: | John Ramsbottom |
| Builder: | Crewe Works |
| Serialnumber: | 624–633, 680–689, 730–739, 780–789, 880–889, 1692–1701, 1842–1861, 2279–2288 |
| Builddate: | May 1863 – May 1879 |
| Totalproduction: | 90 |
| Uicclass: | 1B n2 |
| Leadingdiameter: | 3feet |
| Driverdiameter: | 6feet |
| Engine Total: | 14feet |
| Leading: | 7feet |
| Coupled: | 7feet |
| Locoweight: | 26LT |
| Watercap: | 1500impgal |
| Diameterinside: | 3feet |
| Lengthinside: | 9feet |
| Boilerpressure: | 140lbf/in2 |
| Totalsurface: | 1083square feet |
| Cylindercount: | Two, inside |
| Cylindersize: | 16x |
| Valvegear: | Stephenson |
| Tractiveeffort: | 87002NaN2 |
| Operator: | London and North Western Railway |
| Withdrawndate: | September 1889 – November 1894, 1914 - 1925 |
| Disposition: | All scrapped |
The LNWR Samson Class was a class of ninety steam locomotives[1] built by the London and North Western Railway at their Crewe Works between 1863 and 1879.
They were officially designated "Curved Link 6-ft Passenger" due to the use of Stephenson valve gear which included a curved expansion link between the fore and back eccentric rods (earlier LNWR designs had used the Allan valve gear which had a straight expansion link) and the use of 63NaN3 diameter wheel centres, which, together with NaN0NaN0 thick tyres gave a driving wheel diameter of 6feet.
Ostensibly a mixed traffic design, they were the first locomotives with coupled driving wheels to be allocated for passenger duties on the LNWR.
They were designed by John Ramsbottom who had fifty built, all without cabs and with pierced driving wheel splashers. Ramsbottom's successor F. W. Webb, built forty more, all with cabs. The earlier locomotives also gained cabs, and all eventually had their splashers filled in.
All ninety locomotives were 'renewed' (replaced) by a like number of Waterloo Class locomotives between 1889 and 1905, but only eighty were scrapped quickly. The ten exceptions were transferred to the Civil Engineer's list, and these were withdrawn between 1914 and 1925. No examples have been preserved.
| 633 | Samson | 624 | ||||
| 634 | Ellesmere | 625 | ||||
| 733 | Chimera | 626 | ||||
| 735 | Charon | 627 | ||||
| 738 | Terrier | 628 | ||||
| 752 | Glowworm | 629 | ||||
| 757 | Banshee | 630 | ||||
| 758 | Hardman | 631 | ||||
| 763 | Violet | 632 | ||||
| 821 | Diomed | 633 | ||||
| 901 | Hero | 680 | ||||
| 902 | Onyx | 681 | ||||
| 628 | Tartarus | 682 | ||||
| 724 | Eden | 683 | ||||
| 748 | Waterloo | 684 | ||||
| 764 | Shap | 685 | ||||
| 792 | Theorem | 686 | ||||
| 793 | Martin | 687 | ||||
| 794 | Woodlark | 688 | ||||
| 795 | Falstaff | 689 | ||||
| 731 | Croxteth | 730 | ||||
| 732 | Hecla | 731 | ||||
| 736 | Memnon | 732 | ||||
| 737 | Roberts | 733 | ||||
| 739 | Sutherland | 734 | ||||
| 742 | Spitfire | 735 | ||||
| 828 | Tubal | 736 | ||||
| 829 | Turk | 737 | ||||
| 830 | Trent | 738 | ||||
| 642 | Bee | 739 | ||||
| 81 | Greystock | 780 | Renamed Greystoke c.1884 | |||
| 1045 | Whitworth | 781 | ||||
| 401 | Zeno | 782 | ||||
| 404 | Zophyrus | 783 | ||||
| 418 | Zygia | 784 | ||||
| 419 | Zillah | 785 | ||||
| 35 | Talisman | 786 | ||||
| 36 | Thalaba | 787 | ||||
| 124 | Marquis Douro | 788 | ||||
| 231 | Firefly | 789 | ||||
| 609 | The Earl of Chester | 880 | ||||
| 632 | Ostrich | 881 | ||||
| 746 | Castor | 882 | ||||
| 814 | Henrietta | 883 | ||||
| 817 | Constance | 884 | ||||
| 819 | Puck | 885 | ||||
| 824 | Adelaide | 886 | ||||
| 832 | Sanspareil | 887 | ||||
| 934 | North Star | 888 | ||||
| 935 | Planet | 889 | ||||
| 414 | Prospero | 1692 | To duplicate list as 3271 in 1895; to Civil Engineer's Dept in 1903 as Engineer Lancaster; withdrawn 1924. | |||
| 424 | Sirius | 1693 | To duplicate list as 3206 in 1895; to Civil Engineer's Dept in 1899 as Engineer Crewe; withdrawn 1914. | |||
| 604 | Narcissus | 1694 | ||||
| 635 | Zamiel | 1695 | ||||
| 636 | Eclipse | 1696 | ||||
| 285 | Phalaris | 1697 | ||||
| 444 | Typhoon | 1698 | ||||
| 445 | Ixion | 1699 | ||||
| 446 | Siren | 1700 | ||||
| 805 | Caliban | 1701 | ||||
| 434 | 1842 | |||||
| 468 | Wildfire | 1843 | ||||
| 469 | 1844 | |||||
| 485 | Euxine | 1845 | ||||
| 486 | Skiddaw | 1846 | ||||
| 487 | John O’Groat | 1847 | To duplicate list as 3199 in 1894; to Civil Engineer's Dept in 1895 as Spare Engine, to Engineer Liverpool in 1903; withdrawn 1921. | |||
| 631 | Hotspur | 1848 | To duplicate list as 3273 in 1896; to Civil Engineer's Dept in 1901 as Engineer Manchester; withdrawn 1914. | |||
| 1163 | John O’Gaunt | 1849 | ||||
| 90 | Luck of Edenhall | 1850 | ||||
| 885 | Vampire | 1851 | To duplicate list as 3269 in 1895; to Civil Engineer's Dept in 1897; became Spare Engine in 1923; withdrawn 1925. | |||
| 2150 | Atlas | 1852 | ||||
| 2151 | Baltic | 1853 | To duplicate list as 3268 in 1895; to Civil Engineer's Dept in 1901 as Engineer Walsall; withdrawn 1923. | |||
| 2152 | Sybil | 1854 | ||||
| 2153 | Isis | 1855 | ||||
| 2154 | Loadstone | 1856 | ||||
| 2155 | Liver | 1857 | ||||
| 2156 | Sphinx | 1858 | ||||
| 2157 | Unicorn | 1859 | To duplicate list as 3272 in 1895; to Civil Engineer's Dept in 1905 as Spare Engine; withdrawn 1923. | |||
| 2158 | Serpent | 1860 | ||||
| 2159 | Shark | 1861 | ||||
| 2350 | Centaur | 2279 | Renumbered 773 in 1879; to duplicate list as 3200 in 1894; to Civil Engineer's Dept in 1895 as Engineer Watford; withdrawn 1923. | |||
| 2351 | Saddleback | 2280 | Renumbered 1162 in 1879. | |||
| 2352 | Odin | 2281 | Renumbered 1164 in 1879. | |||
| 2353 | Wyre | 2282 | Renumbered 1166 in 1879; to duplicate list as 3270 in 1895; to Civil Engineer's Dept in 1902 as Engineer Bangor; withdrawn 1925. | |||
| 2354 | Cuckoo | 2283 | Renumbered 1168 in 1879. | |||
| 2355 | Kestrel | 2284 | Renumbered 852 in 1879. | |||
| 2356 | Petrel | 2285 | Renumbered 209 in 1879; to duplicate list as 3198 in 1894, transferred to Civil Engineer's Dept in 1902 as Engineer Northampton; withdrawn 1923 | |||
| 2357 | Medea | 2286 | Renumbered 995 in 1879. | |||
| 2358 | Mastodon | 2287 | Renumbered 479 in 1879. | |||
| 2359 | Pheasant | 2288 | Renumbered 263 in 1879. |