| LMS Patriot Class |
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45500 Patriot at Manchester Victoria, 1960. |
| Type and origin |
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| Power type | Steam |
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| Designer | Sir Henry Fowler |
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| Builder | |
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| Build date | 1930–1934 |
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| Total produced | 52 |
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| Specifications |
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Configuration:
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| • Whyte | 4-6-0 |
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| • UIC | 2′C h3 |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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| Leading dia. | 3 ft 3 in (0.991 m) |
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| Driver dia. | 6 ft 9 in (2.06 m) |
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| Length | 62 ft 8+3⁄4 in (19.120 m) |
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| Loco weight | 80.75 long tons (82.05 t; 90.44 short tons) |
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| Tender weight | 42.70 long tons (43.39 t; 47.82 short tons) |
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| Total weight | 123.45 long tons (125.43 t; 138.26 short tons) |
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| Fuel type | Coal |
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| Fuel capacity | 5.5 long tons (5.6 t; 6.2 short tons) |
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| Water cap. | 3,500 imp gal (16,000 L; 4,200 US gal) |
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| Firebox: | |
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| • Grate area | 30+1⁄2 sq ft (2.83 m2) |
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| Boiler | G9½S |
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| Boiler pressure | 200 psi (1.4 MPa) |
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| Heating surface: | |
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| • Firebox | 183 sq ft (17.0 m2) |
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| • Tubes and flues | 1,552 sq ft (144.2 m2) |
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Superheater:
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| • Heating area | 365 sq ft (33.9 m2) |
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| Cylinders | 3 |
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| Cylinder size | 18 in × 26 in (457 mm × 660 mm) |
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| Valve gear | Walschaerts |
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| Valve type | Piston valves |
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| Train brakes | Vacuum |
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| Career |
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| Operators | |
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| Power class | - 1930–51: 5XP
- 1951–65: 6P5F
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| Numbers | - LMS (1934): 5500–5551
- BR: 45500–45551
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| Withdrawn | 1960–1965 |
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| Disposition | Original 52 withdrawn and scrapped; New-build project under construction |
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The Patriot Class was a class of 52 express passenger steam locomotives built for the London Midland and Scottish Railway. The first locomotive of the class was built in 1930 and the last in 1934. The class was based on the chassis of the Royal Scot combined with the boiler from Large Claughtons earning them the nickname Baby Scots. A total of 18 were rebuilt to create the LMS Rebuilt Patriot Class between 1946 and 1948; thereafter those not subjected to rebuilding were often referred to as the Unrebuilt Patriot Class. These remaining 34 unrebuilt engines were withdrawn between 1960 and 1962.
