Английская Википедия:Baguley valve gear
Шаблон:Short description Шаблон:Use British English Шаблон:Use dmy dates
The Baguley valve gear is a type of steam engine valve gear invented by Ernest E. Baguley, the Chief Draughtsman of the W.G. Bagnall company of locomotive manufacturers and patented in 1893.Шаблон:Sfnp It was used by Bagnall during Baguley's time there, then by his own company of Baguley Cars Ltd.Шаблон:SfnpШаблон:Sfnp
History
The valve gear was invented by Ernest E. Baguley, the Chief Draughtsman of the W.G. Bagnall company of locomotive manufacturers and patented in 1893.Шаблон:Sfnp A modified version was introduced in 1895 which eliminated a curved link.Шаблон:Sfnp
Following Baguley's departure from Bagnall's in 1901 that company developed the Bagnall–Price valve gear which was primarily based on Walschaerts valve gear. Baker identifies one common feature retained from Baguley in Bagnall–Price: "the application of the lap and lead motion by oscillating the expansion link (or sector) bodily, and thus superimposing this motion on the. normal die block travel, the lead remaining constant in all positions of the gear."Шаблон:Sfnp
Baguley formed his own company, Baguley Cars Ltd, in 1911, which constructed internal combustion engine vehicles.Шаблон:Sfnp In 1920 a petrol-hydraulic engine, works No. 621, which had been started in 1914 but delayed by World War One, was completed as an Шаблон:Whyte steam locomotive works No. 2001 with original Baguley valve gear, the only standard gauge locomotive to ever be so fitted.Шаблон:Sfnp The Company went on to complete 30 more steam locomotives through to 1928 all of which were fitted with Baugley value gear, mostly the modified variant.Шаблон:Sfnp
Operation
The valve gear is used to operate the inlet and outlet valves of reciprocating steam locomotives. It uses a rocking sector whose motion is driven via a link from a crankpin between the coupling and connecting rods. The ends of this link are circular and offset from the pivots. On these circular bosses the sector is oscillated by a second link from the rod to an extension to the rear of the sector.Шаблон:Cn
Locomotives with Baguley valve gear
Only a few locomotives with Baguley valve gear remain, the list is known to include:
- Isabel at Amerton Railway, an Шаблон:Whyte built in 1897 by W. G. Bagnall.Шаблон:Sfnp[1]
- Ledo Coal Mines 885 at the National Rail Museum, New Delhi, a Шаблон:Whyte built in 1897 by W. G. Bagnall.[2]
- Rishra at the Leighton Buzzard Light Railway, an Шаблон:Whyte built in 1921 by Baguley.
- Sea Lion at the Groudle Glen Railway, a Шаблон:Whyte built in 1896 by W. G. Bagnall.
References
Footnotes
Sources
Шаблон:Locomotive running gear Шаблон:Steam engine configurations
