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Smith, Patterson and Co of Pioneer Foundry, Blaydon-on-Tyne, manufacturer of cast iron items for the railways, particularly "Chairs".
1870 Company established.
1873 Incorporated as a Limited Company.
1891 Advert. Iron and brass founders. 
1897 Company reconstructed and capital doubled. Incorporated as a public company
1911 Manufacturer of Railway Plant for the Railways.
1914 Directory: Listed as Iron Founders. 
1914 Ironfounders and Engineers. Specialities: turbine and all high-class engine and other castings, sanitary castings, railway chairs, axle boxes and all kinds of castings for railway work, tunnel segments for underground railways and sewers and all descriptions of castings up to 40 tons. 
1933 Acquired Taylor Stoker Co
1954 Private company formed as Smith Patterson (Blaydon) Co. Ltd.
1954 Name changed.
1961 Engineers and ironfounders. Manufacturers of iron castings, chairs for sleepers, tunnel segments, manholes and builders' merchants castings. 400 employees.