LNWR Newton Class

The LNWR Newton Class was a class of ninety-six 2-4-0 steam locomotives[1] built by the London and North Western Railway at their Crewe Works between 1866 and 1873.

LNWR Newton class
LNWR 1525 Abercrombie at Monument Lane loco depot
Type and origin
Power typeSteam
DesignerJohn Ramsbottom
BuilderCrewe Works
Serial number920–929, 980–999, 1160–1179, 1280–1289, 1300–1309, 1380–1385, 1479–1488, 1682–1691
Build dateApril 1866 – August 1873
Total produced
  • 96 (LNWR)
  • 10 (L&YR)
Specifications
Configuration:
​
 • Whyte2-4-0
 • UIC!B n2
Gauge4 ft 8 1⁄2 in (1,435 mm)
Leading dia.3 ft 9 in (1.143 m)
Driver dia.6 ft 9 in (2.057 m)
Tender wheels3 ft 9 in (1.143 m)
Wheelbase:
 • Engine		15 ft 8 in (4.775 m)
 • Leading7 ft 5 in (2.261 m)
 • Coupled8 ft 3 in (2.515 m)
Loco weight29 long tons (29 t)
Water cap1,500 imp gal (6,800 l; 1,800 US gal)
Firebox:
 • Firegrate area		15 sq ft (1.4 m2)
Boiler:
​
 • Diameter4 ft 0 3⁄16 in (1.224 m)
 • Tube plates10 ft 6 in (3.200 m)
Boiler pressure140 lbf/in2 (970 kPa)
Heating surface1,099 sq ft (102.1 m2)
CylindersTwo, inside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Performance figures
Tractive effort10,190 lbf (45.33 kN)
Career
OperatorsLondon and North Western Railway
DispositionAll scrapped

They were officially designated Curved Link 6-ft 6-in Passenger due to the use of a curved link between the fore and back eccentric rods of their Stephenson valve gear and the use of 6-foot-6-inch (1.981 m) diameter wheel centres, which, together with 1 1⁄2-inch (38 mm) thick tyres gave a driving wheel diameter of 6 ft 9 in (2.057 m).[2][3]

They were designed by John Ramsbottom who had 76 built, all without cabs and with pierced driving wheel splashers. Ramsbottom's successor F. W. Webb, built twenty more, all with cabs. The earlier locomotives also gained cabs, and all eventually had the splashers filled in.[4]

All were 'renewed' (replaced) by a like number of LNWR Improved Precedent Class between 1887 and 1894.[5]

Fleet list

Lancashire & Yorkshire Railway

In 1873 ten locomotives of the type were built at Crewe for the Lancashire and Yorkshire Railway (L&YR) and utilised on passenger expresses between Blackpool, Manchester and Yorkshire. They were given the numbers 456—462 and 731 to 733. Most were fitted with replacement boilers about and other standard L&YR parts 1888. They were then used on Liverpool−Manchester expresses on the new L&YR route. The more powerful Barton Heath 4-4-0s took over on the more demanding sections to Yorkshire though the Ramsbottom engines were considered faster on light loads. Most were withdrawn in the period 1895 to 1897 but Nos. 461, 462 and 731 lasted to 1904, 1912 and 1926 respectively. No. 731 had been used as the Chief Mechanical Engineer's (CME) locomotive since 1886, based at Horwich and attached to a combined bogied tender-saloon vehicle. It passed back to the LNWR when the L&YR amalgamation of 1922 and into the London Midland and Scottish Railway (LMS) in 1923 at the grouping. It was scrapped when the LMS CME department moved to Derby.[6][7]

References
  1. "Locomotive Classes of the LNWR". www.lnwrs.org.uk.
  2. Baxter 1978, p. 118.
  3. Baxter 1978, p. 120.
  4. Baxter 1978, pp. 120, 122.
  5. Baxter 1978, pp. 120–122.
  6. Marshall 1972, pp. 80,93,230.
  7. "Locomotive with a coupe, 1923". Archived from the original on 9 February 2018. Retrieved 23 August 2019.CS1 maint: BOT: original-url status unknown (link)
  • Baxter, Bertram (1978). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 2A: London and North Western Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. ISBN 0-903485-51-6.
  • Marshall, John (1972). The Lancashire & Yorkshire Railway, volume 3. Newton Abbot: David & Charles. ISBN 0-7153-5320-9.CS1 maint: ref=harv (link)


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