Cannabaceae

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This article is about the 4-4-4T class. For the 2-4-0 class, see NER Class F.

  • NER Class D
  • LNER Class H1
Type and origin
Power typeSteam
DesignerVincent Raven
BuilderNER Darlington
Build date1913, 1920—1922
Total produced45
Specifications
Configuration:
​
 • Whyte4-4-4T
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.3 ft 1+1⁄4 in (0.946 m)
Driver dia.5 ft 9 in (1.753 m)
Trailing dia.3 ft 1+1⁄4 in (0.946 m)
Wheelbase34 ft 6 in (10.52 m)
Loco weight87.35 long tons (88.75 t; 97.83 short tons)
Fuel typeCoal
Fuel capacity4 long tons (4.1 t; 4.5 short tons)
Water cap.2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:​
 • Grate area23 sq ft (2.1 m2)
Boiler pressure160 psi (1.1 MPa)
Heating surface:​
 • Firebox124 sq ft (11.5 m2)
 • Tubes654.24 sq ft (60.781 m2)
 • Flues280.6 sq ft (26.07 m2)
 • Total surface1,252.974 sq ft (116.4051 m2)
Superheater:
​
 • TypeSchmidt
 • Heating area194.13 sq ft (18.035 m2)
Cylindersthree
Cylinder size16+1⁄2 in × 26 in (419 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort22,940 lbf (102.0 kN)
Career
OperatorsNorth Eastern Railway, London and North Eastern Railway
Retired1931-1936
DispositionAll rebuilt to LNER Class A8

The North Eastern Railway Class D (later London and North Eastern Railway (LNER) Class H1) was a class of 4-4-4T three-cylinder side tank steam locomotive designed by Vincent Raven in 1913.[1] They were used for rural passenger services. Forty five were built in total; a first batch of twenty, then a further twenty five after the War.[2]

Between 1931 and 1936, all of the LNER H1 class were rebuilt with a 4-6-2T wheel layout and re-classified as A8.[3] They were scrapped between 1957 and 1960.[3]

References

[edit]
  1. ^ Ahrons, E. L. (1927). The British Steam Railway Locomotive 1825-1925. Amen Corner, London: Locomotive Publishing Co. p. 338.
  2. ^ "NER Raven H1 4-4-4T Locomotives". LNER Encyclopedia.
  3. ^ a b Casserley, H.C.; Asher, L.L. (1961) [1955]. Locomotives of British Railways. Spring Books. pp. 113, 472.


source: https://en.wikipedia.org/wiki/NER_Class_D

One thought on “Cannabaceae”

  1. Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
    View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction

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