Bury, Curtis, and Kennedy
Edward Bury (1794-1858) set up his works in 1826, under the name of Edward Bury and Company. He employed James Kennedy, who had gained experience of locomotive production under Robert Stephenson and Mather, Dixon and Company, to be his works foreman, later becoming a partner. About 1828 the firm moved to bigger premises in Love Lane, Liverpool, known as the Clarence Foundry.
Their first engine was built in 1830. Called Dreadnought, it ran on the Liverpool and Manchester Railway. It was objected to because it was on six wheels and was sold to the Bolton & Leigh Railway. The second, the four-coupled Liverpool, later in 1830, used a cranked driving axle, and was also objected to (by George Stephenson) because the 6 ft diameter wheels were too big.
The Bury type 
However, they refined their designs and the resulting 2-2-0 and 0-4-0 locomotives quickly became a standard which was emulated by many other manufacturers, becoming known as the "Bury type". Distinguishing features of these engines were inside horizontal (or near-horizontal) cylinders, inside wrought-iron bar frame, which gave them a light appearance, and the round firebox (D-shaped in plan), with a large domed top surmounted by a safety valve.
Railways supplied 
Thirteen were supplied to the Great Northern Railway (six of them being sub-contracted to William Fairbairn & Sons), and they became the standard classes on the London and Birmingham Railway, the Eastern Counties Railway, the Midland Counties Railway, the Manchester, Bolton and Bury Canal Navigation and Railway Company, the Lancaster and Preston Railway and the North Union Railway. Several were exported to the USA, more than from any other British company except R. Stephenson & Co., and where Bury's "bar-frames" became standard. The firm had a reputation for good workmanship, cheapness and reliability.
Train operating contract 
In 1836 Edward Bury contracted to run the trains of the London and Birmingham Railway at a farthing per mile per passenger at a speed not to exceed 22.5 mph, the L&BR providing locomotives to Bury's specification. This contract was annulled in July 1839 because of the unexpected growth in traffic and the increased speed required, and Bury acted thereafter as Locomotive Superintendent of the L&BR in the normal way. The engines he had specified were built by eight different firms, Bury's firm providing 45 of the original stock of 90.
Formation of partnership 
In 1842, Bury took Kennedy, Timothy Abraham Curtis and John Vernon as partners, and the company changed its name to Bury, Curtis and Kennedy.
Bury continued as Locomotive Superintendent of the London & Birmingham Railway but a few months after it had become part of the London & North Western Railway he resigned in March 1847. In February 1848 he was appointed Locomotive Superintendent of the Great Northern Railway, and in June 1849 became also its general manager.
Meanwhile the firm of Bury, Curtis & Kennedy continued building locomotives, some of advanced design which had a great influence on subsequent practice, such as the 2-2-2s for the L&NWR which led directly to the Bloomers, as well as one-offs such as the gigantic 6-2-0 Crampton "Liverpool", which was the most powerful locomotive in the world in 1848.
In all, B, C & K's Clarence Foundry built about 415 locomotives, but they produced much else besides, from church bells to iron ships. At its height, the firm employed 1,600 men.
The firm lost heavily in making the components for a large swing-bridge over the River Neva at St Petersburg — for which the Russian Government never paid, according to Bury's widow. This, plus a serious decline in the shipbuilding trade in Liverpool led to the firm's closing down in 1851.
Two of the firm's locomotives have been preserved, Furness Railway 0-4-0 No. 3 (nicknamed "Old Coppernob" or "Coppernob"), built in 1846, now in the National Railway Museum, York and Great Southern and Western Railway 2-2-2 No 36, built in 1847, now at Cork Kent railway station, Cork, Republic of Ireland.