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Craven Brothers (Manchester) of Salford and of Vauxhall Works, Reddish, Stockport.
Established in 1853.
Craven Brothers of Manchester were makers of machine tools and cranes (factory cranes and railway breakdown cranes).
In 1839 the family moved to Manchester, and Thomas began to work for Sharp, Roberts and Co.
Later he set up his own company selling and servicing machine tools.
William Craven worked for John George Bodmer, in Cambridge Street Mills, off Oxford Road, Manchester. Bodmer was an inventor, who had more than 150 patents in his name.
1852 William moved with his brother to William Fairbairn and Sons.
John Craven, an accountant, started off in business with his father. He joined Craven Brothers a year after the company was founded.
1853 Craven Brothers was formed at Dawson Croft Mill, Salford. Initially the brothers made machine tools for locomotive manufacturers, but they later branched out into many other types of machine tools, particularly for armament manufacturers. Machine tools make metal and wood parts for other machines. They range in size from hand-held devices to objects that weigh hundreds of tonnes.
Craven Brothers specialised in outsize and individually built machine tools, such as a 42-foot (13-metre) Craven Vertical Boring and Turning Mill, weighing about 600 tonnes.
The company built up a huge export trade, with agents in India, Finland, Australia, Canada, South Africa, Argentina and Brazil and expanded so rapidly that it had to move several times.
In 1863 they moved to Osborne Street in north Manchester.
1866 Patent. '2735. To Greenwood Craven, William Craven, and John Craven, of the Vauxhall Iron Works, in the city of Manchester, Engineers and Tool Makers, for the invention of "improvements in machinery for cutting and planing iron and other metals, particularly applicable to machinery for cutting and planing armour plates."'
1875 Began building powered travelling cranes
1885 Public company.
1900 Further growth prompted the construction of the Vauxhall Works at Reddish, near Stockport. The company kept the Osborne Street works, with about 500 employees, open until 1920.
1902 Moved from Manchester to Vauxhall Works, Reddish.
1904 Plate from a 10-ton crane. Exhibit at Anson Engine Museum
1911 Grindley Automatic Turret Lathe. 
1914 Manufacturers of high class modern machine tools, electric, steam, and hydraulic cranes etc. Employees 1,500. 
The need for greater facilities led to the establishment of works at Stockport which were gradually repeatedly enlarged until the entire business was transferred there in 1920.
1928 the machine tool businesses of Sir W. G. Armstrong, Whitworth and Company, Joshua Buckton and Co and Thomas Shanks and Co were acquired and the staffs transferred to Reddish where the products of each of the four firms were manufactured.
1931 Transferred the Cranes Division to Herbert Morris, Empress Works, Loughborough.
1935 See Craven Brothers:1935 Review
1937 Machine tool manufacturers. 
1939 Craven Brothers bought the Victoria Works at Denton from Knight and Hale.
1956 during one of the company’s best periods, 250 people worked at Denton.
1961 Manufacturers of all types of heaviest class machine tools and smaller machine tools. 1,500 employees. 
1965 Acquired by Staveley Coal and Iron Co but was losing money
1968 Announce new plano-milling machine. 
1970 Faced with continued losses in machine tools, Staveley's Craven-Swift Division was closed
Descriptions and illustrations of many Craven Bros railway breakdown cranes may be found in a new (2012) book, 'Railway Breakdown Cranes' by Peter Tatlow