LMS Route: Birmingham New Street to Nuneaton
Castle Bromwich Station: mrcb1739
An unidentified Ivatt 2MT 2-6-0 locomotive runs tender first
past Castle Bromwich Signal Box with a down Class J train. First built by the
LMS in 1946, this class of locomotive was designed for light mixed traffic to
replace elderly 0-6-0s which formed the backbone of the low-powered locomotives
within the LMS fleet. A total of one hundred and twenty-eight locomotives were
built between 1946 and 1953, mostly at Crewe. Twenty were built by LMS prior to
nationalisation on 1st January 1948 and were allocated as No 6400 to No 6419.
On nationalisation 40000 was added to their numbers so that they were numbered
No 46400 to 46419. The remaining one hundred and eight locomotives of the
class, No 46420 to No 46527, were built by British Railways, and from No 46465
onwards (built by Darlington works in 1951) had the diameter of their cylinders
increased by ½ inch to yield a tractive effort of 18510 lb, some 1100 lb
greater than the original design. The LMS classified them as 2F whilst British
Railways classified them as 2MT.