Nigel Gresley
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Sir Herbert Nigel Gresley (19 June 1876 – 5 April 1941) was one of Britain's most famous steam locomotive engineers, who rose to become Chief Mechanical Engineer (CME) of the London and North Eastern Railway (LNER). He was the designer of some of the most famous steam locomotives in Britain, including the LNER Class A1 and LNER Class A4 4-6-2 Pacific engines. An A1, Flying Scotsman, was the first steam locomotive officially recorded over 100mph in passenger service, and an A4, number 4468 Mallard, still holds the record for being the fastest steam locomotive in the world.
Gresley's engines were considered elegant, both aesthetically and mechanically. His invention of a three-cylinder design with only two sets of Walschaerts valve gear, the Gresley conjugated valve gear, produced smooth running and power at lower cost than would have been achieved with a more conventional three sets of Walschaerts gear.
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[edit] Biography
Gresley was born in Edinburgh (due to his mother's ante-natal complications), but was raised in Netherseal, Derbyshire. After attending school in Sussex and at Marlborough College, Gresley served his apprenticeship at the Crewe works of the London and North Western Railway, afterwards becoming a pupil under John Aspinall at Horwich of the Lancashire and Yorkshire Railway (L&YR). After several minor appointments with the L&YR he was made Outdoor Assistant in the Carriage and Wagon Department in 1901; in 1902 he was appointed Assistant Works Manager at Newton Heath depot, and Works Manager the following year.
This rapid rise in his career was maintained, for in 1904 he became Assistant Superintendent of the Carriage and Wagon Department of the L&YR. A year later he moved to the Great Northern Railway (GNR) as Carriage and Wagon Superintendent. He succeeded Henry A. Ivatt as CME of the GNR on 1 October 1911. At the 1923 Grouping he was appointed CME of the newly-formed LNER, a position he held until, on 5 April 1941, he died after a short illness, and was buried in Netherseal, Derbyshire.
He was succeeded as CME by Edward Thompson.
[edit] Innovations
- Derived valve motion for 3-cylinder steam locomotives; Gresley Conjugated Valve Gear.
- The largest passenger steam locomotive in the UK, the P2 2-8-2.
- The largest steam locomotive in the UK, the U1 2-8-0+0-8-2 Garratt.
- The 'locomotive that won the war', the V2 2-6-2.
- The A3 'Flying Scotsman' 4-6-2.
- The fastest steam locomotive in the world, the A4 'Mallard' 4-6-2 (126 mph).
- Another A4, 'Silver Link', previously holding the world speed record for steam locomotives (112 mph)
- The experimental high-pressure LNER Class W1 'hush-hush' 4-6-4 locomotive
- Silver Jubilee train
[edit] Locomotives designed by Gresley
- GNR
- LNER
