Indian locomotive class HT

Indian locomotive class HT
Works photo of EIR no.1251
Type and origin Power type Steam Designer British Engineering Standards Association Builder Beyer, Peacock & Co. Hawthorn Leslie Build date 1923-1925 Total produced 36 (EIR)
Specifications Configuration: ​  • Whyte 2-8-2T Gauge 1,676 mm (5 ft 6 in) Coupled dia. 4 ft 3 in (1.30 m) Length: ​  • Over buffers 41 ft 3+1⁄2 in (12.586 m) Axle load 17.3 long tons (17.6 t) Loco weight 90.5 t (89.1 long tons; 99.8 short tons) Firebox: ​  • Grate area 27 sq ft (2.5 m2) Boiler pressure 180 psi (1,241 kPa) Heating surface 1,567+1⁄2 sq ft (145.63 m2) Cylinders Two, outside Cylinder size 22 in (560 mm) x 26 in (660 mm) Valve gear Walschaerts Valve type Piston
Career Operators East Indian Railway North Western State Railway Indian Railways Numbers EIR: 6140-6171 (Beyer Peacock locomotives) 3599-3602 (Hawthorn Leslie locomotives)
Reference: , unless where noted

The Class HT (Heavy Tank) was a broad-gauge tank locomotive, designed for use in the British Raj. It was one of seven standard broad-gauge locomotive classes designed by the British Engineering Standards Committee, later renamed the British Engineering Standards Association (BESA).

History

At the turn of the 20th century, the railways in British India utilised numerous classes of locomotives of differing designs, and there was an urgent need of standardisation. A subcommittee of the British Engineering Standards Committee (BESA) therefore designed several standardised classes of locomotives between 1903 and 1910 in three successive editions, with the Class HT being a later addition to the third report of the BESA Standard in 1910. The design was similar to the locomotives delivered in 1921 to the Bengal Nagpur Railway (BNR), which were made using parts shared with the other BESA locomotives. The Class HT had the same cylinder dimensions as the HGS/HGC class freight locomotives, whereas the boiler was shared with the Class PT 2-6-4T locomotives.

1946 Beyer, Peacock catalogue listing the HT class for the North Western Railway (NWR).

During the 1920s, Beyer, Peacock & Co. delivered the HT class locomotives for the North Western Railway and the East Indian Railway. Some were in active service as of 1978, allocated to Dhanbad and Pathardth sheds of Eastern Railways.

See also

• Indian locomotive class SP
• Indian locomotive class SG
• Indian locomotive class AP
• Indian locomotive class HP
• Indian locomotive class HG
• Indian locomotive class PT

References

• Hughes, Hugh (1979). Steam locomotives in India, Part 3 – Broad Gauge. Harrow, Middlesex: Continental Railway Circle. ISBN 9780950346946.