LNWR Webb Precursor Class

LNWR Precursor class (Webb)

Type and origin
Power type	Steam
Designer	F. W. Webb
Builder	Crewe Works
Serial number	1902–1821, 2229–2238, 2249–2258
Build date	1874–1879
Total produced	40

Specifications
Configuration:
• Whyte	2-4-0
• UIC	1B n2
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Leading dia.	3 ft 6 in (1.067 m)
Driver dia.	5 ft 6 in (1.676 m)
Wheelbase	7 ft 5 in (2.261 m) + 8 ft 3 in (2.515 m)
Loco weight	32 long tons (33 t)
Boiler:
• Diameter	4 ft 2 in (1.27 m)
• Tube plates	9 ft 10 in (3.00 m)
Boiler pressure	140 lbf/in² (0.97 MPa)
Heating surface	1,074.6 sq ft (99.83 m²)
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Allan

Career
Operators	London and North Western Railway
Scrapped	1892–1895
Disposition	All scrapped

The London and North Western Railway (LNWR) Precursor class was a class of forty 2-4-0 steam locomotives designed by F. W. Webb and built at the railway's Crewe Works between 1874 and 1879.

History

The Precursor class was the locomotive class to be designed wholly by F. W. Webb. He had previously ordered further examples of his predecessor's Samson and Newton classes.

The class featured enclosed wheel splashers and cabs from new, but no brakes were initially fitted; some received steam brakes and others vacuum brakes.

They were fitted with 1,500-imperial-gallon (6,800 l; 1,800 US gal) tenders.

Fleet list

Table of locomotives^[1]
LNWR No.	Name	Crewe Works No.	Date built	Date scrapped
2145	Precursor	1802	000000001874-04-01-0000Apr 1874	000000001894-03-01-0000Mar 1894
2146	Harbinger	1803	000000001874-08-01-0000Aug 1874	000000001893-06-01-0000Jun 1893
2147	Champion	1804	000000001874-08-01-0000Aug 1874	000000001895-11-01-0000Nov 1895
2148	Vizier	1805	000000001874-08-01-0000Aug 1874	000000001893-01-01-00001893 circa
2149	Candidate	1806	000000001874-08-01-0000Aug 1874	000000001893-06-01-0000Jun 1893
1143	Marquis	1807	000000001874-08-01-0000Aug 1874	000000001894-01-01-00001894 circa
1144	Druid	1808	000000001874-08-01-0000Aug 1874	000000001892-01-01-00001892 circa
1145	Cossack	1809	000000001874-09-01-0000Sep 1874	000000001894-01-01-00001894 circa
1152	Arab	1810	000000001874-09-01-0000Sep 1874	000000001892-12-01-0000Dec 1892
1153	Sirocco	1811	000000001874-09-01-0000Sep 1874	000000001895-08-01-0000Aug 1895
1154	Colossus	1812	000000001874-09-01-0000Sep 1874	000000001892-01-01-00001892 circa
1155	Dragon	1813	000000001874-09-01-0000Sep 1874	000000001894-04-01-0000Apr 1894
402	Viscount	1814	000000001874-09-01-0000Sep 1874	000000001893-06-01-0000Jun 1893
406	Senator	1815	000000001874-09-01-0000Sep 1874	000000001892-01-01-00001892 circa
408	Simoon	1816	000000001874-09-01-0000Sep 1874	000000001894-01-01-00001894 circa
409	Thunderbolt	1817	000000001874-10-01-0000Oct 1874	000000001892-12-01-0000Dec 1892
413	Python	1818	000000001874-10-01-0000Oct 1874	000000001893-06-01-0000Jun 1893
425	Oberon	1819	000000001874-10-01-0000Oct 1874	000000001893-01-01-00001893
426	Warrior	1820	000000001874-10-01-0000Oct 1874	000000001895-01-01-00001895 circa
427	Fame	1821	000000001874-10-01-0000Oct 1874	000000001894-01-01-00001894 circa
1147	John Rennie	2229	000000001878-10-01-0000Oct 1878	000000001894-01-01-00001894 circa
1148	Boadicea	2230	000000001878-10-01-0000Oct 1878	000000001894-01-01-00001894 circa
1149	Helvellyn	2231	000000001878-09-01-0000Sep 1878	000000001894-01-01-00001894 circa
1150	Lang Meg	2232	000000001878-10-01-0000Oct 1878	000000001893-01-01-00001893 circa
1151	Lapwing	2233	000000001878-10-01-0000Oct 1878	000000001895-05-01-0000May 1895
1165	Vulture	2234	000000001878-11-01-0000Nov 1878	000000001892-12-01-0000Dec 1892
1169	Albatross	2235	000000001878-10-01-0000Oct 1878	000000001892-12-01-0000Dec 1892
1174	Cerberus	2236	000000001878-10-01-0000Oct 1878	000000001893-06-01-0000Jun 1893
679	Harrowby	2237	000000001878-10-01-0000Oct 1878	000000001894-01-01-00001894 circa
847	Cedric	2238	000000001878-10-01-0000Oct 1878	000000001895-01-01-00001895 circa
431	Bessemer	2249	000000001879-01-01-0000Jan 1879	000000001892-12-01-0000Dec 1892
838	Henry Cort	2250	000000001879-01-01-0000Jan 1879	000000001895-09-01-0000Sep 1895
481	Etna	2251	000000001879-01-01-0000Jan 1879	000000001892-12-01-0000Dec 1892
626	Emerald	2252	000000001879-01-01-0000Jan 1879	000000001895-01-01-00001895 circa
255	Eglington	2253	000000001879-01-01-0000Jan 1879	000000001895-01-01-00001895 circa
680	Giffard	2254	000000001879-01-01-0000Jan 1879	000000001895-01-01-00001895 circa
338	Levens	2255	000000001879-02-01-0000Feb 1879	000000001892-12-01-0000Dec 1892
718	Jason	2256	000000001879-02-01-0000Feb 1879	000000001893-06-01-0000Jun 1893
779	William Baker	2257	000000001879-02-01-0000Feb 1879	000000001893-06-01-0000Jun 1893
1180	Pearl	2258	000000001879-02-01-0000Feb 1879	000000001895-02-01-0000Feb 1895

References

↑ Baxter 1979, pp. 185–186.

Baxter, Bertram (1979). Baxter, David, ed. British Locomotive Catalogue 1825–1923, Volume 2B: London and North Western Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. ISBN 0-903485-84-2.

London and North Western Railway locomotives
John Ramsbottom (North Eastern Division 1846–1857)
Francis Trevithick (Northern Division 1846–1857)	SFB passenger 187 Velocipede 173 Cornwall 290 Rocket LFB passenger 7ft Single (Raven) 176 Courier SFB goods LFB goods SFB goods tank LFB goods tank
John Ramsbottom (Northern Division 1857–1862)	3020 Cornwall (renewed) 271 DX Problem / Lady of the Lake
Edward Bury (Southern Division 1846–1847)	Bury Bar Frame locomotive
James McConnell (Southern Division 1847–1862)	Bloomer McConnell Goods Wolverton Express Goods
John Ramsbottom (1862–1871)	4ft Shunter Samson Newton Special Tank
Francis William Webb (1871–1903)	Alfred the Great Coal Engine Coal Tank Experiment Dreadnought Teutonic Greater Britain John Hick Dock Tank Precursor Precedent Improved Precedent Jubilee Waterloo 4ft 6in Tank 5ft 6in Tank 18in Goods (Cauliflower) 18in Tank A B 1400 Class
George Whale (1903–1909)	Experiment 19in Express Goods Precursor Precursor Tank Renown C D E F G
Charles John Bowen Cooke (1909–1920)	1185 Claughton George V Queen Mary Prince of Wales Prince of Wales Tank C1 G1 MM
H. P. M. Beames (1920–1921)	380 G2 G2A
George Hughes (1922–1923)	No new locomotive classes
Locomotives of the London and North Western Railway LMS locomotives British Railways steam locomotives

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