Английская Википедия:Alexander Allan (locomotive engineer)

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LNWR No. 3074, Allan's 'Crewe' goods engine designed for the GJR, introduced 1846 [1]
Файл:LNWR engine 'Columbine'.jpg
Allan's 2-2-2 Columbine, GJR No. 49, LNWR No. 1868 with cab, built 1845 withdrawn 1902

Alexander Allan was a Scottish mechanical engineer. He was born at Montrose, Angus, in 1809 and died at Scarborough, Yorkshire on 2 June 1891.[2]

Biography

Allan was born in Montrose, Angus, Scotland in 1809.Шаблон:Sfnp He undertook a apprenticeship to Mr. Gibb, a millwright.Шаблон:Sfnp In 1832 aged about 23 he took a position at Robert Stephenson and Company, Newcastle upon Tyne.Шаблон:Sfnp By 1834 he had moved to Liverpool and taken up a position with George Forrester and Company who were about to begin building railway locomotives.Шаблон:Sfnp

Allan was works manager for George Forrester and Company until 1840.[3] He was the engineer sent for a year to supervise the maintenance of the three Forrester engines Vauxhall, Dublin and Kingstown for the first year of their service at Dublin and Kingstown Railway in 1834.Шаблон:Sfnp

From 1843 to 1853 he was Works Manager at the Crewe Works of the Grand Junction Railway, later London and North Western Railway, under Francis Trevithick.Шаблон:Sfnp He later claimed the credit for designing the Crewe type locomotive with inclined cylinders and double frames, but this claim has been challenged.Шаблон:Sfnp From 1853 to 1865 he was Locomotive Superintendent of the Scottish Central Railway. Allan was an original member of the Institution of Mechanical Engineers in 1847.

Inventions

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Allan valve gear, seen here fitted to an early Austrian locomotive

Allan made a number of inventions, including a balanced slide valve, but the best-known is his straight-link valve gear of 1855.

See also

References

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Sources

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