Midland Railway 483 Class

Rebuilt Midland Johnson 2P 4-4-0 No. 40542 at Chesterfield 1959

Type and origin
Power type	Steam
Designer	Samuel W. Johnson
Build date	Midland locos built 1882-1901 S&DJ locos built 1914-1921

Specifications
Configuration	4-4-0
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge
Driver dia.	Original, 6 ft 6.5 in (1.994 m) Rebuilt, 7 ft 0.5 in (2.146 m)
Loco weight	53 tons 7 cwt
Fuel type	Coal
Boiler pressure	160 psi
Cylinders	Two inside
Cylinder size	Original, 18 in × 26 in (460 mm × 660 mm) Rebuilt, 20.5 in × 26 in (520 mm × 660 mm)

Performance figures
Tractive effort	Original, 15,960 lb Rebuilt, 17,585 lb

Career
Power class	LMS 2P

The Midland Railway 483 Class 4-4-0 was a class of steam locomotive designed by Samuel W. Johnson for passenger work on the Midland Railway. This design formed the basis for the later LMS Class 2P 4-4-0. The London, Midland and Scottish Railway (LMS) seems to have inherited three batches of these locomotives and some of them passed into British Railways (BR) ownership in 1948.

Numbering

BR numbers 40332-40397 (17 locomotives) originally built 1882-1891, some rebuilt from 1910 onwards
BR numbers 40400-40562 (143 locomotives) originally built 1891-1901, all rebuilt between 1912 and 1923
BR numbers 40322-40326 (5 locomotives) built for Somerset and Dorset Joint Railway 1914-1921 and taken into LMS stock in 1930

Note: two of the above number series contain gaps so the totals do not tally.

On rebuilding, the Stephenson valve gear was retained but the following changes were made:

18 in × 26 in (460 mm × 660 mm) cylinders with slide valves were replaced by 20.5 in × 26 in (520 mm × 660 mm) cylinders with piston valves
6 ft 6.5 in (1.994 m) driving wheels were replaced by 7 ft 0.5 in (2.146 m) driving wheels
a superheater was fitted

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Midland Railway locomotives

Matthew Kirtley (1844-1873)	130 156 480 700

Samuel W. Johnson (1873-1903)	115 1000 1116A 1142 1252 1322 1377 2228 2441 2501 2511 Cl. 3 4-4-0

Richard Deeley (1904-1909)	990 1528 2000 Paget locomotive

Henry Fowler (1909-1923)	483 3835 Lickey Banker S&DJR 7F 2-8-0

Locomotives of the Midland Railway LMS locomotives British Railways steam locomotives

This article is issued from Wikipedia - version of the 12/5/2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.