GWR 1016 Class

The 1016 Class consisted of sixty double framed 0-6-0 saddle tank locomotives designed by George Armstrong and built at the Wolverhampton Works of the Great Western Railway between 1867 and 1871. Like the earlier 302 Class of Joseph Armstrong, the 1016s had 4 ft 6 in (1.372 m) wheels and a 15 ft 6 in (4.72 m) wheelbase, dimensions that would remain traditional for the larger GWR pannier tanks right through to Charles Collett's 5700 Class, and with little change to Frederick Hawksworth's 9400 Class of 1947.

GWR 1016 Class
Type and origin
Power typeSteam
DesignerGeorge Armstrong
BuilderWolverhampton, GWR[1]
Order numberLots: B, C, J, K, L[1]
Serial numberWorks Nos: 47–70, 131–66[1]
Build date1867 (1867)–71[1]
Total produced60[1]
Specifications
Configuration:
​
 • Whyte0-6-0ST[1]
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
Driver dia.4 ft 6 in (1.372 m)[1]
Wheelbase7 ft 4 in (2.24 m) + 8 ft 2 in (2.49 m), total 15 ft 6 in (4.72 m)[1]
Frame type
  • Type: Double
  • Length: 26 ft 8 1⁄2 in (8.14 m)[2]
Axle load13 long tons 0 cwt (29,100 lb or 13.2 t) full[1]
Loco weight37 long tons 0 cwt (82,900 lb or 37.6 t) full[1]
Fuel typeCoal
Water cap880 imp gal (4,000 l; 1,060 US gal)[1]
Firebox:
 • Firegrate area		16.25 sq ft (1.510 m2)[1]
Boiler
  • Barrel: 11 ft 0 in (3.35 m)
  • Outside diameter: 4 ft 7 7⁄8 in (1.419 m)[1]
Boiler pressure140 lbf/in2 (0.97 MPa)[1]
Heating surface1,137.0 sq ft (105.63 m2)[1]
 • Tubes1,045.25 sq ft (97.107 m2)[1]
 • Firebox91.75 sq ft (8.524 m2)[1]
CylindersTwo, inside
Cylinder size
Loco brakeWooden blocks[lower-alpha 1]
Performance figures
Tractive effort13,540 lbf (60.23 kN)[1]
Career
OperatorsGWR
ClassGWR 1016
Numbers1016–75[1]
LocaleGWR Northern and Southern divisions[1]
Withdrawn1910 (1910)–35[4]
DispositionAll scrapped[1]

Construction

The 1016 Class consisted of 60 engines and was built in five lots:

  • Nos. 1016–1027 (Lot B, 1867)
  • Nos. 1028–1039 (Lot C, 1867-8)
  • Nos. 1040–1051 (Lot J, 1870)
  • Nos. 1052–1063 (Lot K, 1870-1)
  • Nos. 1064–1075 (Lot L, 1871)

Design and modifications

The class originally had very short saddle tanks. They were a Wolverhampton version of the Standard Goods class, which they resembled below the running plate. Between 1879 and 1895 the 16 in × 24 in (406 mm × 610 mm) cylinders were mostly enlarged to 17 in (432 mm), and the wheels enlarged to 4 ft 7 7⁄8 in (1.419 m) by means of thicker tyres. Most reboilering was done at Swindon rather than Wolverhampton, and with new boilers new, full-length tanks were fitted. From 1911 all but 11 of the class were rebuilt with pannier tanks, at the time that Belpaire fireboxes were fitted. After 1922 heavier boilers were used, and pressure increased. Many had new bunkers, of both Swindon and Wolverhampton design.

Use

These engines were distributed between the Northern and Southern Divisions of the GWR. Apart from four scrapped before 1914 all ran well over a million miles; No. 1047, aged 65, was the last survivor, in summer 1935.[5]

Notes
  1. GWR ended the use of wooden blocks in the 1870s when cast iron blocks with steam brakes were introduced.[3]

References
  1. le Fleming 1958, p. E15.
  2. le Fleming 1958, p. E5.
  3. le Fleming 1958, p. E11.
  4. le Fleming 1958, pp. E17-E19.
  5. le Fleming 1958, pp. E15-E19.
  • Jones, Robin (2014). Great Western Railway Pannier Tanks (1 ed.). Marlborough, UK: The Crowood Press. ISBN 978-1-84797-653-6.
  • le Fleming, H.M. (1958). The Locomotives of the Great Western Railway, part five: Six-coupled Tank Engines. Kenilworth: RCTS. ISBN 0-901115-35-5. OCLC 500544510.
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