Gothic boiler

Gothic boiler
French locomotive L'Aigle

A gothic boiler is an early form of steam locomotive boiler with a prominently raised firebox of "Gothic arch", "haystack", or "coppernob" shape. The term haystack is most commonly used, but is avoided here as it is confusingly used for three quite different forms of boiler.[1] This particularly large outer firebox served as the steam dome and was often highly decorated with polished brass. These were popular for early railway locomotives, from 1830 to around 1850.[2]


Haystack firebox

London & Birmingham Railway 2-2-0 Bury locomotive

The prominently raised firebox first appeared in 1830, in Bury's 0-4-0 locomotive Liverpool. This was the progenitor of his bar-frame locomotives and shared their distinctive boiler design. The inner firebox was D-shaped in plan, with a flat tubeplate. Fireboxes of this time did not yet have a brick arch and so the Bury firebox was relatively short in length but tall, to give an adequate length of combustion path. The outer firebox was a vertical cylinder, formed into a tall hemispherical dome above it.[3] Later Bury designs were flattened on top and became known as "haystacks".[4]

Gothic arch firebox

A regular problem with early steam locomotives was that of priming, the carry-over of water with the steam. Many varieties of steam dome on the boiler barrel were tried to avoid this, by taking the steam outlet from as high as possible above the waterline. Stephenson's Rocket of 1829 had used such a small steam dome. In the 1830s, domes became extravagantly large. A drawback to fitting such large domes was the weakening of the boiler shell where such a large hole was cut into it.

In 1840, Stephenson produced their 2-2-2 design which avoided the dome altogether, in favour of a raised firebox in the Bury style of ten years earlier.[4] Boiler power had increased considerably over the decade, now requiring a larger fire grate area. The inner and outer fireboxes were square in plan, with flat sides that required staying. At the top these four sides were vaulted inwards to a point, having a profile approximating a then-fashionable Gothic arch. These provided a large steam space above the waterline, but their flat surfaces limited working pressure.

Stephenson used the Gothic arch firebox for their long-boiler locomotives as well, including their 2-2-2 North Star of 1841[5][6] and outside-cylindered 2-2-2s for the Yarmouth and Norwich Railway in 1844.[6]

The Gothic arch firebox was also notably used by a number of Gooch's Great Western Railway broad-gauge locomotives,[4][7] including the Firefly, Leo and Hercules classes of 1840-1842.

One well-known locomotive that did not use a Gothic boiler, despite its appearance, was the L&MR Lion of 1838. This used a semi-cylindrical raised firebox, hidden beneath a purely decorative brass facsimile of the Gothic boiler.

Other makers of haystack fireboxes

Some makers retained the Bury pattern of a hemispherical firebox. The American-built 4-2-0 Norris locomotives for the Birmingham and Gloucester Railway resembled an enlarged Bury design with outside cylinders and still retained their small D-shaped inner firebox.[8] Kitson also built a number of long-boiler 0-6-0s around 1845, also using the hemispherical haystack firebox.[4][9]


Bury also built Furness Railway Nº 3 of 1846, one of the few surviving locomotives of this style and period. This locomotive acquired the name "Old Coppernob" or "Coppernob", on account of its polished copper outer cladding,[10][11][12] which it then gave generically to this style of boiler.


By around 1850 the haystack and Gothic boiler had fallen from favour. Boiler working pressures had risen from 80 psi to the 120 psi of the Jenny Lind, making the flat surfaces of the Gothic firebox unsupportable. Future locomotives returned to the use of the steam dome.


  1. ^ K. N. Harris (1974). Model Boilers and Boilermaking. MAP. p. 54. ISBN 0852423772. 
  2. ^ Hewison, Christian H. (1983). Locomotive Boiler Explosions. David and Charles. p. 12. ISBN 0-7153-8305-1. 
  3. ^ Ahrons, E.L. (1966). The British Steam Railway Locomotive. I, to 1925. Ian Allan. pp. 18–19. 
  4. ^ a b c d Ahrons, British Steam Railway Locomotive, p. 35
  5. ^ Not the better-known GWR North Star
  6. ^ a b Ahrons, British Steam Railway Locomotive, p. 53-54
  7. ^ Ahrons, British Steam Railway Locomotive, p. 46-47
  8. ^ Ahrons, British Steam Railway Locomotive, p. 42
  9. ^ Westcott, G. F. (1958). Kitson's 0-6-0 Hector, long-boiler locomotive for the York and North Midland Railway. London: Science Museum, HMSO. p. fig. 20. 
  10. ^ "Cumberland and Westmorland Archives - Furness Railway". Cumberland and Westmorland Archives. 
  11. ^ "Furness Railway 'Coppernob' 0-4-0 steam locomotive, No 3, 1846". National Railway Museum. 
  12. ^ "Furness Railway No. 3 Locomotive 'Old Coppernob". Lindal & Marton Community Website. 

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • List of boiler types, by manufacturer — There have been a vast number of designs of steam boiler, particularly towards the end of the 19th century when the technology was evolving rapidly. A great many of these took the names of their originators or primary manufacturers, rather than a …   Wikipedia

  • Alton Towers — Resort Alton Towers resort and Theme Park logo Location Alton, Staffordshire, England Coordinates …   Wikipedia

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

  • Woodway House — is in Teignmouth, South Devon, England. It was at one time a farm on lands held by the Bishops of Exeter. In around 1815 a thatched cottage in the cottage orne style of Horace Walpole s (1717 1797) Thames side villaEvans, Tony Green, Candida… …   Wikipedia

  • The Twilight Zone Tower of Terror — Infobox Disney ride name= Tower of Terror caption= park= land= designer= Walt Disney Imagineering manufacturer= Walt Disney World Co type= Elevator drop theme= The Twilight Zone control system= Dual Processor Allen Bradley PLC propulsion= host=… …   Wikipedia

  • The Shining (film) — The Shining Theatrical release poster Directed by Stanley Kubrick Produced by Stanle …   Wikipedia

  • Victoria and Albert Museum — Coordinates: 51°29′48″N 0°10′19″W / 51.496667°N 0.171944°W / 51.496667; 0.171944 …   Wikipedia

  • NZR K class (1877) — K 88 without tender. Power type Steam Builder Rogers Locomotive Works, New Jersey, USA Serial number 2454 2455 2469 2474 Buil …   Wikipedia

  • National Register of Historic Places listings in Wayne County, Michigan — The white areas represent unincorporated charter and civil townships. The gray areas represent incorporated cities and villages …   Wikipedia

  • Murray LDS Second Ward Meetinghouse — U.S. National Register of Historic Places …   Wikipedia