Class 4F
LMS Class 4F no. 44422
Technical Data
Introduced : 1911
Number built : 772
Wheel arrangement : 0-6-0
Number built : 772
Wheel arrangement : 0-6-0
Originally introduced by the Midland Railway, it says a lot that the LMS continued to produce this class of locomotive until 1941. It was originally intended to be an attempt to reduce the need for the Midland Railway for double-heading their freight trains; whether or not it was successful in this is debatable as compared to later LMS designs it wasn't all that powerful. It also suffered the typical Midland design weaknesses in the front end design and the axlebox bearings. However they were robust, simple and relatively cheap to build and so it is perhaps not too surprising that the LMS continued with their construction, even after class 5F and 8F locomotives were introduced. It was only the post-war Ivatt designs that finally removed the need for any more of this class to be constructed.
Midland Railway-built Locomotives
Number | Works Built at | Year Built |
3835-3836 | Derby | 1911 |
3837-3851 | Derby | 1917 |
3852-3901 | Derby | 1918-1919 |
3902-3936 | Derby | 1920-1921 |
3937-3986 | Armstrong Whitworth | 1921-1922 |
3987-4026 | Derby | 1921-1922 |
SDJR 57-61 | Armstrong Whitworth | 1921-1922 |
Note: The locomotives built for the Somerset and Dorset Railway in the above table were taken into LMS stock in 1930 and renumbered 4557-4561 (hence the gap in the table on the right).
LMS-built Locomotives
Number | Works Built at | Year Built |
4027-4034 | Derby | 1924-1925 |
4057-4081 | North British | 1925 |
4082-4106 | Kerr, Stuart | 1925-1926 |
4107-4176 | Crewe | 1924-1926 |
4177-4178 | St Rollox | 1924 |
4179-4206 | St Rollox | 1926 |
4207-4301 | Derby | 1925-1927 |
4302-4311 | Crewe | 1926 |
4312-4331 | St Rollox | 1927-1928 |
4332-4356 | Kerr, Stuart | 1926-1927 |
4357-4381 | Andrew Barclay | 1926-1927 |
4382-4406 | North British | 1926-1927 |
4407-4436 | Derby | 1927 |
4437-4456 | Crewe | 1927-1928 |
4457-4466 | Horwich | 1928 |
4467-4476 | St Rollox | 1928 |
4477-4506 | North British | 1927 |
4507-4556 | Crewe | 1928 |
4562-4576 | Crewe | 1937 |
4577-4606 | Derby | 1939-1941 |
Preservation
4 of the class survive:
3924 - Located at the Keighley and Worth
Valley Railway, operational
4027 - Located at the Gloucestershire
Warwickshire Railway, under overhaul
4123 - Located at the Avon Valley Railway,
undergoing restoration
4422 - Undergoing overhaul.