NBR 224 and 420 Classes
Summary
The locomotives may have been named after 1875 – it has been stated that Drummond, who replaced Wheatley in 1875, named NBR engines "including those already in service".

NBR 224 and 420 Classes

Section Title: Summary
Table Section Text: The locomotives may have been named after 1875 – it has been stated that Drummond, who replaced Wheatley in 1875, named NBR engines "including those already in service".

Original number	Class	Built	Rebuilt	Renumbered (year)	Withdrawn

224	224	1871	1885, 1887, 1897	1192 (1913)	1919

264	224	1871	1893	1198 (1913)	1917

420	420	1873	1887	1241 (1914)	1915

421	420	1873	1887	1242 (1914)	1918

422	420	1873	1890	1243 (1914)	1918

423	420	1873	1890	1244 (1914)	1914

Sentence(s)

In the NBR 224 and 420 Classes, the nos. 420/1 were rebuilt in 1887 and nos. 422/3 in 1890.

final_sentence: In the NBR 224 and 420 Classes, the nos. 420/1 were rebuilt in 1887 and nos. 422/3 in 1890.