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2-2-2-0
Under the Whyte notation for the classification of steam locomotives, 2-2-2-0 usually represents the wheel arrangement of two leading wheels on one axle, four powered but uncoupled driving wheels on two axles, and no trailing wheels, but can also be used to represent two sets of leading wheels (not in a bogie truck) two driving wheels, and no trailing wheels. Some authorities place brackets around the duplicated but uncoupled wheels, creating a notation 2-(2-2)-0, or (2-2)-2-0, as a means of differentiating between them. Others simply refer to the locomotives 2-2-2-0. Usage The 2-2-2-0 wheel arrangement was first used on some locomotives introduced on the Eastern Counties Railway by John Chester Craven between 1845 and 1847, and some Crampton locomotives on the South Eastern Railway in 1849.Baxter, (1977) pp.45 & 67. However the 2-2-2-0 type is usually associated with Francis Webb of the London and North Western Railway who between 1882 and 1890 introduced a number of compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNWR Dreadnought Class
The LNWR Dreadnought class was a class of 40 passenger three-cylinder compound 2-2-2-0 locomotives designed by F. W. Webb for the London and North Western Railway, and manufactured by them in their Crewe Works between 1884 and 1888. The railway also commissioned the Beyer, Peacock and Company to construct an additional locomotive of the design for the Pennsylvania Railroad.Nock, O. S., et al. Railways at the Turn of the Century, 1895-1905. Blandford P., 1969. Design The design featured a boiler pressed to delivering saturated steam to two outside high-pressure cylinders, which exhausted to one low-pressure cylinder inside the frames. All three cylinders had a stroke of ; the high-pressure cylinders drove the rear wheels, while the low-pressure drove the leading driving wheels. As the two pairs of driving wheels were not connected, the locomotives were " duplex drive" or "double-singles". They were a development of Webb's Experiment class; they had larger boilers and smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |