Caledonian Railway 179 and 184 Classes

Caledonian Railway 179 and 184 Classes

Type and origin Power type Steam Designer John F. McIntosh Builder St. Rollox Build date 1913-15 Total produced 11

Specifications Configuration 4-6-0 Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Driver dia. 5 ft 9 in (1.75 m)[1] Loco weight 68.5 tons[1] Tender weight 38 tons[1] Boiler pressure 170psi[1] Superheater Robinson[2] Cylinders Two, inside Cylinder size 19.5 in × 26 in (495 mm × 660 mm)[1] Valve gear Stephenson

Performance figures Tractive effort 20,700 lbf (92 kN)[1]

Career Operators CR • LMS Class CR: 179 and 184 Power class LMS: 3F

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.

Overview

They were the last new locomotives designed by McIntosh before his retirement. 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. The locomotives were the most successful of McIntosh's various 4-6-0 designs.^[4]

LMS ownership

The locomotives passed into the ownership of the London, Midland and Scottish Railway upon its formation in 1923. Although the older 908 Class were treated as passenger locomotives by the LMS, the 179s were classified as a freight type and were repainted into unlined black freight livery. They continued in use until they were displaced by new LMS standard locomotives such as the Black Five 4-6-0s.

Disposal

Although they outlasted most of the other McIntosh 4-6-0s they were withdrawn and scrapped between 1934 and 1946,

Numbering and Locomotive Histories

CR no.	LMS no.	Delivered	Works	Withdrawn	Class
179	17905	12/1913	St. Rollox	12/1945	179 Class
180	17906	12/1913	St. Rollox	02/1936	179 Class
181	17907	1/1914	St. Rollox	11/1935	179 Class
182	17908	1/1914	St. Rollox	02/1946	179 Class
183	17909	02/1914	St. Rollox	11/1936	179 Class
184	17910	12/1914	St. Rollox	09/1936	184 Class
185	17911	12/1914	St. Rollox	04/1935	184 Class
186	17912	01/1915	St. Rollox	06/1937	184 Class
187	17913	02/1915	St. Rollox	11/1934	184 Class
188	17914	2/1915	St. Rollox	06/1935	184 Class
189	17915	02/1915	St. Rollox	03/1935	184 Class

source: BritishSteam^[5]

References

1. Atkins, C. P. (1976), The Scottish 4-6-0 Classes, Ian Allan, p.105
2. Atkins, C. P. (1976), The Scottish 4-6-0 Classes, Ian Allan, p.43
3. Essery, Bob & Jenkinson, David (1986), An Illustrated History of L.M.S. Locomotives, Volume Three: Absorbed Pre-Group Classes, Northern Division, OPC, p.104
4. Atkins, C. P. (1976), The Scottish 4-6-0 Classes, Ian Allan, p.48
5. "BritishSteam locomotive information". BritishSteam.com. Retrieved 2013-05-26.