GS&WR Class D19

The GS&WR Class D19 was a lightweight 4-4-0 steam locomotive used by the Great Southern and Western Railway in Ireland in the late 19th and into the 20th Century.

Many Irish branch lines, some very long, were lightly laid and needed special locomotives to work the trains. With a locomotive weight just of 34½ tons, one of the most successful examples of this type was the G.S.& W.R. Class D19.

History

This class of 4-4-0 locomotives was designed by Alexander McDonnell, the Locomotive Supt. of the G.S.& W.R., and built between 1877 and 1880. The locomotives were intended for light branch line work and they made their mark on the lightly laid Kerry line, gaining the name "Kerry Bogies" although they were also used on the Cork to Youghal line and as an assisting engine on the steeply graded (1 in 60)section of the main line from Glanmire to Blarney, this latter work taxing their capabilities to the limit.

Mechanically they were the first bogie locomotives to have used the American principle of the "swing - link" bogie where hinged links control the truck's lateral (sideways) movement.

Technical Details

*Driving Wheel diameter : 68½ ins. (18 spokes).
*Bogie Wheel diameter : 36 ins. (9 spokes).
*Cylinders : (2) 16 ins. x 20 ins.
*Boiler Pressure : 150 lb/sq.in.

Development

Many changes took place during the long life of these locomotives, which lasted almost to the end of steam traction on the CIE. The boiler and firebox arrangement was the largest and most obvious change. As built the locomotives had a McDonnell raised round top firebox but this was replaced over the years the Belpaire 'U' types, all members of the class being converted by 1950.Chimneys and smokeboxes were also changed. The original cab, described as "abbreviated", offered little protection for the crew, and was replaced.

The tender was a six wheel design with flaired top and was of rivetted construction.

Livery

Originally lined black, until around 1918 when the Great Southern and Western Railway introduced its long-lived standard all-over unlined battleship-grey livery. This lasted past the GSR amalgamation, and into the CIE era. In latter CIE days, the only change was that pale yellow painted numerals on cabsides replaced earlier GSWR style cast number plates. A few older CIE 4.4.0's were treated to the 1950's lined green livery - but no locomotives of this class were among them.