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| == Examples from the UK == | == Examples from the UK == | ||
| * The ] class of ], built by ]. This ] express locomotives were first built in 1847 and had an 8 ft diameter ] size. | * The ] class of ], built by ]. This ] express locomotives were first built in 1847 and had an 8 ft diameter ] size. | ||
| * The later examples of the ] by ], 1893-1899, built for standard gauge. No 3065 ''Duke of Connaught'' made a record-breaking run with the '']'' express train on 9 May 1904, covering the distance from Plymouth to Paddington in 227 minutes. | * The later examples of the ] by ], 1893-1899, built for standard gauge. No 3065 ''Duke of Connaught'' made a record-breaking run with the '']'' express train on 9 May 1904, covering the distance from Plymouth to Paddington in 227 minutes. | ||
| * The ] of the ], which ran an average speed of more than 60 mph during the ], built first in 1870. They were called ''eight-footer'' because of the big ], that was more than 8 ft. in diameter. | * The ] of the ], which ran an average speed of more than 60 mph during the ], built first in 1870. They were called ''eight-footer'' because of the big ], that was more than 8 ft. in diameter. | ||
| * The ]'s ] "Spinners". One, No. 673, survives at the ], York. | * The ]'s ] "Spinners". One, No. 673, survives at the ], York. | ||
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Under the Whyte notation for the classification of steam locomotives, 4-2-2 represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle, and two trailing wheels on one axle.
Other equivalent classifications are:
UIC classification: 2A1 (also known as German classification and Italian classification)
French classification: 211
Turkish classification: 14
Swiss classification: 1/4
Like other steam locomotive types with single pairs of driving wheels, they were also known as singles.
Examples from the UK
- The Iron Duke class of Great Western Railway, built by Daniel Gooch. This broad gauge express locomotives were first built in 1847 and had an 8 ft diameter driving wheel size.
- The later examples of the GWR 3031 Class by William Dean, 1893-1899, built for standard gauge. No 3065 Duke of Connaught made a record-breaking run with the Ocean Mail express train on 9 May 1904, covering the distance from Plymouth to Paddington in 227 minutes.
- The GNR Stirling 4-2-2 of the Great Northern Railway, which ran an average speed of more than 60 mph during the race to the north, built first in 1870. They were called eight-footer because of the big driving wheel, that was more than 8 ft. in diameter.
- The Midland Railway's 115 class "Spinners". One, No. 673, survives at the National Railway Museum, York.
- A further notable UK class 4-2-2 is the GER Class P43, which was an early oil-burning engine, developed by the pioneer of oil-boilers, James Holden
Examples from Germany
| Steam locomotive wheel arrangements (Whyte notation) | |
|---|---|
| Single engine types |
|
| Divided drive and Duplex engine types | |
| Articulated locomotives Fairlie, Meyer and Garratt types | |
| Articulated locomotives Mallet types | |
| Articulated locomotives Triplex and other Multiplex types | |
| Articulated locomotives Engerth types | |
| Geared locomotives | |
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