NBR 224 and 420 Classes [SEP] service entry
NBR 224 and 420 Classes
The NBR 224 and 420 Classes consisted of six steam locomotives of the 4-4-0 wheel arrangement built by the North British Railway (NBR) in 1871 and 1873. 224 had three claims to fame: it was the first inside-cylinder 4-4-0 engine to run in Great Britain; it was the locomotive involved in the Tay Bridge disaster; and after rebuilding in 1885, it was the only compound-expansion locomotive on the NBR, and one of just three
224, nos. 420/1 were rebuilt in 1887, nos. 422/3 in 1890 and no. 264 in 1893. No. 224 then received its third rebuilding in 1897. In later years, no. 224 was used on secondary and branch line trains.
History Final years.
Every six months, the NBR renumbered some of its older locomotives into a "duplicate list", in order to vacate numbers for new construction. Accordingly, in 1913, nos. 224 and 264 were placed on the duplicate list, becoming