L&YR Class 31
20th century British steam locomotive class

The L&YR Class 31 was a class of 0-8-0 steam locomotives of the Lancashire and Yorkshire Railway. The class was designed by George Hughes and introduced in 1912. The class comprised 115 new locomotives (the 1546 Class, built 1912-21) and 40 rebuilt from two other classes: the 91 Class (built 1900-08) and the 9 Class (built 1918).
01Superheaters
All of the locomotives were superheated. Three main types of superheater were used: the Horwich "twin plug" type, fitted to twenty locomotives of the 1546 class and eight of the 91 Class; the Robinson type, fitted to ten of the 1546 class; and the Horwich "top and bottom header" type, fitted to the remaining 117 locomotives.
02Transfer to LMS
The locomotives passed to the London, Midland and Scottish Railway (LMS) in 1923. The LMS numbered them 12840-12994 and gave them the power classification 7F.
03Transfer to BR
In 1948, British Railways (BR) inherited 17 locomotives and numbered them in the range 52841-52971.
04Withdrawal
No examples of this class were preserved.
Sources and credits
This article is adapted from the Wikipedia article “L&YR Class 31”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Normanton Locomotive Depot survivor of a large class of ex-L&Y geograph-2785803-by-Ben-Brooksbank.jpg by Ben Brooksbank, CC BY-SA 2.0
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