NBR A class

NBR A Class
LNER Classes N14 & N15

300px N15/1 No. 69219 at Bathgate Locomotive Depot 19 September 1962

Type and origin Power type Steam Designer William P. Reid Builder North British Locomotive Company, Robert Stephenson and Company Build date 1909-1923 Total produced 105

Specifications Configuration 0-6-2 Gauge 4 ft 8 1⁄2 in (1,435 mm) Driver diameter 4 ft 6 in (1.372 m) Trailing dia 3 ft 9 in (1.143 m) Loco weight various see below Fuel type Coal Boiler pressure 175 lbf/in2 (1.21 MPa) Cylinders Two, inside Cylinder size 18 in × 26 in (457 mm × 660 mm) Valve gear Stephenson

Performance figures Tractive effort 23,205 lbf (103.22 kN)

Career Withdrawn 1947-1962 Disposition scrapped

The NBR A Class (London and North Eastern Railway (LNER) Classes N14 and N15 were the standard 0-6-2 tank locomotives designed by Matthew Holmes for freight duties on the North British Railway. The LNER regarded the original locomotives as two separate classes (N14 & N15). The final batch of locomotives was on order at the time of the grouping in 1923.

History

N14 Class

The original six locomotive introduced in 1909 and had inside cylinders and piston valves operated by Stephenson valve gear, and weighed . They were built by the North British Locomotive Company and numbered 858-863. They were withdrawn 1947-1954.

N15/1 Class

Fifty three similar locomotives were built by the North British Locomotive Company between June 1910 March 1917 with longer cabs but shorter bunkers. They were fitted with Steam brakes and used on Freight duties. A further batch of ten locomotives was built by North British Locomotive Company in February and March 1920. A third batch of ten was on order from Robert Stephenson and Company when the North British Railway became a constituent of the LNER. They were delivered between January and March 1923. They weighed and were numbered to fill gaps in the sequence between 20 and 926. Two of these locomotives were later fitted with Westinghouse brakes in 1929 and were re-classified N15/2. The remainder were withdrawn between 1957 and 1962. .

N15/2 Class

Six N15/1 locomotives were built by the North British Locomotive Company with Westinghouse brakes in 1910 nkers. They were used to bank passenger trains up the 1 in 42 Cowlairs incline leading from Glasgow Queen Street railway station. Prior to 1910 trains had been roped hauled by a stationary engine. A further two N15/1 were converted to N15/2 in 1929. They weighed and were numbered to fill gaps in the sequence between 7 and 282 and were withdrawn between 1957 and 1962. .

External links

• NBR/LNER Reid "N14" Class 0-6-2T at BRDatabase
• NBR/LNER Reid "N15" Class 0-6-2T at BRDatabase