The Caledonian Railway 179 Class and 184 Class were 4-6-0 mixed-traffic locomotives[3] designed by John F. McIntosh and built in two batches in 1913–14 and 1914–15 respectively, at the Caledonian Railway's own St. Rollox Works.
The differences between the two batches were minor, and they are often considered to be a single class.
The type was essentially a superheated version of the earlier 908 Class and were built primarily for use on express goods trains, although they also worked on passenger traffic and were painted in the Caledonian's blue passenger livery.
[4] The locomotives passed into the ownership of the London, Midland and Scottish Railway upon its formation in 1923.
Although they outlasted most of the other McIntosh 4-6-0s they were withdrawn and scrapped between 1934 and 1946. source: BritishSteam[5] This article relating to steam locomotives operated in Scotland is a stub.