Midland Railway 1000 Class
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Midland Railway 1000 Class is a class of 4-4-0 steam locomotive designed for passenger work.
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[edit] Overview
They were designed by Samuel W. Johnson and had a 3-cylinder compound arrangement with one high pressure inside cylinder and two low pressure outside cylinders.(Smith-Johnson system). The first 6 were built in 1902-1903 and Richard Deeley built further examples from 1905.
Numbered 1000-44, British Railways renumbered them 41000-44 after nationalisation in 1948.
[edit] Preservation
The first of the class No. 1000 was set aside for preservation after withdrawal in 1959. Though steamed since preservation, she is now a static exhibit in the National Railway Museum in York.
[edit] Dimensions
- LMS/BR Power classification, 4P
- Locomotive weight, 61 tons 14 cwt
- Tender weight, Not known
- Boiler pressure, 200 psi
- Superheater, No. Rebuilt with superheater from 1914
- Cylinders:
- One high pressure, 19"x26" (piston valves)
- Two low pressure, 21"x26" (slide valves)
- Driving wheel diameter, 7' 0"
- Tractive effort, 21,840 lb (LP cylinders at 80% pressure)
- Valve gear, Stephenson
For terminology, see Steam locomotive components
[edit] LMS compound locomotives
After the grouping, the LMS continued to build slightly modified MR Compounds as the LMS Compound 4-4-0
[edit] Other compound locomotives
[edit] Sources
- Ian Allan ABC of British Railways Locomotives, 1948 Edition, part 3, pp 5-6
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