Backs off at Embsay for disposal
It was under Hughes that the class became the subject of
early experiments in superheating. This was the process of increasing the
temperature of the steam produced in the boiler so the minimum of energy was
lost. After many months of trails a further 20 superheated engines were
authorised to be built and the first of these superheated class 27's emerged
from Horwich Works in 1909. The superheated 27's retained the boiler pressure
of the originals (180 psi). This first batch had round topped boilers but in
1912 a second batch of 20 was constructed with Belpaire fireboxes.
Although the class was augmented by a further 60 engines between 1900 and 1909 with another ten added in 1917-18. The final five built reverted entirely to the original 1889 specification. It is a tribute to the soundness usefulness and simple practicality of Aspinall's design that some 300 of the class passed into the hands of the LMS and around 50 were still in British Railways service as late as the summer of 1960.
Although the class was augmented by a further 60 engines between 1900 and 1909 with another ten added in 1917-18. The final five built reverted entirely to the original 1889 specification. It is a tribute to the soundness usefulness and simple practicality of Aspinall's design that some 300 of the class passed into the hands of the LMS and around 50 were still in British Railways service as late as the summer of 1960.
Many thanks to http://www.ribblesteam.org.uk for the above text.
Pictures as always by me
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