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Firebox of a GWR 6959 Class steam locomotive, showing the underside of the brick arch, constructed from specially-shaped firebricks. Empty firebox of a Baureihe 52, showing the brick arch. There is a large brick arch (made from fire brick) attached to the front wall (boiler throat plate) of the firebox immediately beneath the firetubes. This ...
The hatched circles show the outline of the barrel to which the firebox was attached. A Round-topped firebox cross section shown for comparison. Note the angling of the stays. Pacific-type flat-topped inner firebox. The Belpaire firebox is a type of firebox used on steam locomotives. It was invented by Alfred Belpaire of Belgium in 1864. Today ...
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The typical locomotive firebox of the day was long and narrow, fitting in between the locomotive's frames. The successful design of a trailing truck with the firebox mounted behind the driving wheels (e.g. the Pacific or 4-6-2 class) not yet been developed. Wootten instead mounted his huge firebox above the locomotive's driving wheels. The ...
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.
The 'waisted' firebox is at the far end of the boiler. A round-topped boiler is a type of boiler used for some designs of steam locomotive and portable engine. It was an early form of locomotive boiler, although continuing to be used for new locomotives through to the end of steam locomotive manufacture in the 1960s.
[5] [7]: 18 Early American locomotives had bar frames, made from steel bar; in the 20th century they usually had cast steel frames or, in the final decades of steam locomotive design, a cast steel locomotive bed – a one-piece steel casting for the entire locomotive frame, cylinders, valve chests, steam pipes, and smokebox saddle, all as a ...
The square-topped Belpaire firebox allows steam to be conveniently collected at its top corners and therefore locomotives with Belpaire fireboxes often dispensed with a dome, for example express engines such as the GWR Castle Class (the large brass boiler fitting on a Castle is the distinctive GWR safety valve cover, not a dome).