of Imperial Tube Works, Monmore Green, Wolverhampton
1861 Company established.
1866 Patent to John Brotherton, of the Imperial Tube Works, Wolverhampton, in the county of Stafford, Tube Manufacturer, has given notice in respect of the invention of "improvements in machinery for making the fittings for gas, steam, and water pipes"
1869 Patent to Josiah Latimer Clark, of Westminster,in the county of Middlesex, Civil Engineer, and John Brotherton, of Wolverhampton, in the county of Stafford, Tube Manufacturer, for the invention of "improvements in the manufacture of iron and steel tubes."
1884 William John Brotherton, mayor of Wolverhampton, exhibited the firm's range of wrought iron tubes and fittings of all descriptions.
1886 The company was registered on 29 July, to take over the business of gas and water tube fittings manufacturers carried on by the firm of the same name.  John Brotherton Ltd
1892 Advert. 
1914 Tube manufacturers. Specialities: wrought iron and steel tubes and fittings, coils, oil line pipes etc. Employees 400. 
Sources of Information
- London Gazette 16 October 1866
- London Gazette 28 May 1869
- The Stock Exchange Year Book 1908
- Wolverhampton Red Book and Directory, 1892
- Peck's Trades Directory of Birmingham, 1896-97: Advertisers
- 1914 Whitakers Red Book