George Hattersley and Sons
of Northbrook Works, Keighley.
of Greengate Shed, Keighley (1961)
Later set up another company to develop technology for the textile industry. This became George Hattersley and Sons
1800 Established the Northbrook Works for the company.
1829 After Richard's death the business was presumably run by his son George
1834 The first power loom was made at the Northbrook works. It was broken up by a mob of hand-loom weavers while in transit between Keighley and Bradford.
1866 The first revolving box loom was made.
1867 Dobby mechanism patented.
1869 Death of George Hattersley
c.1876 The Dobby or Heald Machine was patented, known as the "Keighley Dobby."
Became the producer of hundreds of different sizes and types of looms. World-wide reputation for wool-preparing machinery.
1888 Private company. The business continued in the control of the original family.
1914 Manufacturers of looms and other textile machinery. Specialities: looms and preparing machinery of every description. Employees 1,100. 
1927 See Aberconway for information on the company and its history.
1929 Listed Exhibitor - late entry. Manufacturers of Insulating, Making-up and Binding Tapes, Plain and Fancy Brace and Uniform Webs. Upholsterers' Webs, Beltings, Spindle Tapes, Lamp Wicks and other Woven Fabrics. (Wall Space) 
1933 Standard Looms. Exhibit at Armley Mill Museum
1961 Textile machinery manufacturers also smallwares, webbing and lamp wick manufacturers. Makers of the first power loom and "Heald" or "Dobby" machine. 450 employees. 
Cop Winder. Exhibit at Queen Street Mill Museum.
A number of their looms. Exhibit at Bradford Industrial Museum.