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of Victoria Works, Gateshead, were marine and electrical engineers and boilermakers.
1864 Company established by William Clarke (formerly with Bedlington Iron Co and W. G. Armstrong and Co of Elswick) and Edward Benning at South Shore, Gateshead. Initially produced winches; first steam cargo winch introduced in 1868.
1873 Joseph Watson died.
1874 Moved to Victoria Works. Captain Abel H. Chapman joined the company.
1875 Started producing boilers, concentrating on multi-tubular boilers.
1882 Clarke, Chapman and Gurney of Gateshead experimented with employing women as draughtsmen, a special building, so as to give the ladies separate accommodation, was built. 
1882 Joseph John Gurney retired from the partnership which was continued by William Clarke and Abel Henry Chapman, presumably becoming Clarke, Chapman and Co
1883 Charles Algernon Parsons became a junior partner at Clarke, Chapman and Co, in charge of the new electrical department. Parsons concentrated on efforts to devise a high-speed engine for driving directly the newly introduced electric generators, as well as developing a high speed generator.
1884 Electric winch introduced.
1884 Parsons produced his steam turbine patent. The first Parsons turbo-generator was completed in 1884 and is now preserved in the London Science Museum; by 1888 about 200 were in service, mainly for lighting on ships. The partners also worked with Joseph Swan on filament lamps.
1886 Experimented with searchlights for use on ships, which led to the establishment of the Electrical Installation Department.
1888 Glasgow exhibition. Showed a duplex-pump windlass, steering gear, winch, capstan, and a small electric generator. Named as Clarke, Chapman, Parsons and Co of Gateshead. Made a small steam turbine generator - exhibit at Nottingham Industrial Museum.
1889 Parsons left the partnership and founded C. A. Parsons and Co at Heaton.
1893 Public company.
1894 June. Took part in the Royal Agricultural Society’s Competitive Trial of Oil Engines. 6 bhp Butter's patent fixed engine and a portable engine. Article in ‘The Engineer’. 
1894 Building oil engines form 2 to 100 hp. 
1895 Clarke Chapman extended range of boilers to water tube boilers.
1902 First electric windlass.
1907 Two crane railway tank engines built for the Consett Iron Co.
1914 Specialities: All classes of Steam and Electrically Driven Ships' Auxiliary Machinery, Colliery Power Plant, Vertical, Horizontal and Water Tube Boilers. Employees 2500 to 3000. 
1937 Engineers, electricians, boiler makers and founders. 
1939 See Aircraft Industry Suppliers
1961 Manufacturers of winches, windlasses, capstan gears, pumps, cranes, ships' generators and switchboards, searchlight and floodlight projectors, reflectors, steam generating plant for power station and industrial undertakings, pulverising equipment, conveyors and mechanical handling equipment. Member of the Nuclear Power Group.
1968 Details of their power plant division at Gateshead. .
1968 With the support of the Industrial Reorganisation Corporation, Clarke, Chapman and Co and John Thompson tried to take over International Combustion to form a major force in boiler-making but after several months Clarke, Chapman and Co withdrew and the bid failed. Rumours were that IRC was encouraging Clarke, Chapman and Co to take over other stationary crane businesses.
1969 Take-over of bridge builder and heavy crane maker Sir William Arrol and Co and the 3 heavy-crane making companies in the Wellman Engineering Corporation with backing from the Industrial Reorganisation Corporation.
1972 December: Rockwell Standard purchased the Motor Pressings Division of Clarke Chapman-John Thompson.
1974 Clarke Chapman-John Thompson took over the U.K. interests of International Combustion (Holdings) Ltd in return for a 31% holding in the enlarged group; as a consequence, Combustion Engineering would hold about 13% of Clarke Chapman-John Thompson . International Combustion (Holdings)'s activities in South Africa, Australia and India were not included in the deal.
1977 NEI took over International Combustion (Holdings) Ltd, namely the non-UK boiler-making operations that it did not already own. Combustion Engineering, which owned 45%, accepted the deal straight away but the management pushed for a higher price and succeeded .