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Sheaf Ironworks, Waterside South, Lincoln.
Ruston, Proctor and Co was an industrial equipment manufacturer.
The company was best known as a manufacturer of narrow and standard gauge diesel locomotives and steam shovels. They also built cars, steam locomotives and a range of internal combustion engines.
1860 Acquired an established millwrights business in Lincoln. 
1861 Employing 156 persons 
1862 Exhibited at the 1862 London Exhibition. Details of their products shown at
1865 Joseph Ruston became the sole proprietor.
From 1866 they built a number of four and six-coupled tank locomotives, one of which was sent to the Paris Exhibition in 1867.
In 1868 they built five 0-6-0 tank engines for the Great Eastern Railway to the design of Samuel Waite Johnson. Three of these were converted to crane tanks, two of which lasted until 1952, aged eighty-four. Among the company's output were sixteen for Argentina and some for T. A. Walker, the contractor building the Manchester Ship Canal
1876 First traction engine made in 6, 7, 8 and 10 nhp ratings. Details of an 8-hp traction engine. 
1877 Exhibtor at the 1877 Royal Agricultural Show at Liverpool.
1881 Employing 1,000 persons 
1889 Became a limited company. Employees 1,600. The company was registered on 12 July, to take over the business of agricultural and general engineers and boiler makers of the firm of the same name. 
1889 Contractor's tank locomotive. 
1889 Employing 1,600 men.
1890 Visit to Sheaf Iron Works described in The Engineer 1890/08/01.
1897 Employing 2,000 persons 
1899 They acquired limited liability status.
1900 June. Royal Agricultural Show at York. Fixed, portable and traction engines. 
1910 Released catalogue of goods No. 1580. 
1911 Smithfield Club Show. Exhibited thrashing machine, clover huller, traction engine and an oil engine. 
1911 The company has made to this date 42,800 engines of all types, 36,880 boilers, 5,200 centrifugal pumps, 600 excavators and 2,400 thrashing machines. It paid £361,181 in wages in the year. 
1913-1917 For a list of the models and prices of Steam Motor Wagons, Tractors and Ploughs etc. see the 1917 Red Book
1913-1917 For a list of the models and prices of Paraffin Commercial and Agricultural Motors, Tractors, Ploughs, Sprayers, etc. see the 1917 Red Book
1913-1917 For a list of the models and prices of Petrol Motor Commercial Vehicles see the 1917 Red Book
1914 Specialities include Portable Steam Engines, Road Rollers, Cornish, Lancashire, Multitubular and Verticle Boilers, Centrifugal Pumps, Maize Shellers, Straw Elevators, Chaff Cutters and Straw Presses. Employees 5200. 
WWI Maker of aeroplanes.