LNWR Dock Tank

The LNWR 317 class, (also known as Saddle Tank Shunter, Dock Tank or Bissel Tank) consisted of a class of 20 square saddle-tanked steam locomotives built by the London and North Western Railway at their Crewe Works between 1896 and 1901. They had a very short coupled wheelbase, with a trailing Bissel truck to carry weight.

LNWR 317 class
4′ 3″ Saddle Tank Shunter
Locomotive 317, Crewe Works No.3464
Type and origin
Power typeSteam
BuilderCrewe Works
Serial number3741, 3946, 3977–3984, 4175–4184
Build date1896–1901
Total produced20
Specifications
Configuration:
​
 • Whyte0-4-2ST
 • UICB1′ n2t
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.4 ft 3 in (1.295 m) + 2+1⁄2-inch (64 mm) tyres
Trailing dia.2 ft 6 in (0.762 m)
Wheelbase
  • Coupled: 7 ft 3 in (2.21 m)
  • Loco: 15 ft 6 in (4.72 m)
Loco weight34 long tons 17 cwt (78,100 lb or 35.4 t)
Fuel typeCoal
Fuel capacity1.5 long tons (1.5 t)
Water cap.620 imp gal (2,800 L; 740 US gal)
Firebox:
 • Firegrate area		15 sq ft (1.4 m2)
Boiler pressure150 lbf/in2 (1.03 MPa)
Heating surface967 sq ft (89.8 m2)
CylindersTwo, inside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Career
Operators
Power classLMS: 1P, later 0F
Number in class
  • 1 January 1923: 20
  • 1 January 1948: 2
NicknamesBissel tanks
LocaleLondon Midland Region
Withdrawn1927–1938, 1953, 1956
DispositionAll scrapped

History

They were built in three batches of 1, 9 and 10; their first running number was chosen at random from the numbers left vacant by locomotives that had been transferred to the duplicate list. This fate was almost immediately suffered by the 317 class – after only one or two months in service.[1]

All passed to the London, Midland and Scottish Railway in 1923, who initially allocated them the numbers 6400–6419 in the passenger tank sequence. Only five (6402/03/07/14/18) had been renumbered before the numbers were changed to 7850–7869 in 1927, thus moving them into the goods and shunting tanks. The LMS changed their power classification from 1P[2] to 0F at the same time.

Two, 7862 and 7865, survived to enter British Railways service in 1948; 7865 was withdrawn in November 1953, and 7862 three years later. None were preserved.

Bissel tank 7862 at Crewe Works in May 1948. It didn't receive its BR number until March 1949, and lasted until November 1956, by which time it was the last of its class.

Fleet
Table of locomotives[1]
First
LNWR No.		Crewe
Works
no.		Build dateDuplicate
LNWR No.		Date
duplicated		1st
LMS No.		2nd
LMS No.		Date withdrawnNotes
3173741Nov 18963464Oct 189964007850Nov 1930
193976Nov 18993465Dec 189964017851Nov 1932
223977Nov 18993466Dec 189964027852Nov 1927
253978Nov 18993467Dec 189964037853Aug 1932
263979Nov 18993468Dec 189964047854Dec 1930
383980Nov 18993469Dec 189964057855Jul 1936
393981Nov 18993470Dec 189964067856Dec 1929
473982Nov 18993471Dec 189964077857Nov 1929
493983Nov 18993472Dec 189964087858Dec 1936
513984Nov 18993473Dec 189964097859Jun 1938
8134175Oct 19013524Dec 190164107860Dec 1929
8154176Oct 19013525Dec 190164117861Dec 1932
8234177Nov 19013526Dec 190164127862Nov 1956
8264178Nov 19013527Dec 190164137863Nov 1931
8434179Nov 19013528Dec 190164147864Nov 1929
8594180Nov 19013529Jan 190264157865Nov 1953
8984181Nov 19013530Jan 190264167866Oct 1931
8994182Nov 19013531Jan 190264177867Jun 1932
9044183Nov 19013532Jan 190264187868Nov 1929
9054184Nov 19013533Jan 190264197869Nov 1932

References
  1. Baxter 1979, p. 214.
  2. Casserley & Johnston 1974, p. 71.
  • Baxter, Bertram (1979). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 2B: London and North Western Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. p. 214. ISBN 0-903485-84-2.
  • Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. p. 71. ISBN 0-7110-0554-0.
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