In 1889 William Henry Allen's son Richard (later to be Sir Richard Allen) was taken into partnership.[3] The Company moved to a green field site at Queens Park, Bedford in 1894 and the name was changed to W. H. Allen Son and Company.[3][5][6][4] In 1900 the business was incorporated as a limited company.
During the First World War the Company manufactured under license 80 hp Le Rhône Gnome rotary engines. In 1917 the output was increased to 110 hp known as Le Rhône 9J engines. The rotary engines were used in the Airco DH5, the Sopwith Scout, the Bristol Scout and the Avro.[10]
In 1920 the name was changed to W. H. Allen Sons & CompanyLtd upon the appointment of two more of William Henry Allens sons, Harold Gwynne and Rupert Stanley as Managing Directors.[11]
In 1955 the Company purchased the industrial premises of Messrs. Fisher Humphries and Co. Ltd., a firm of agricultural engineers at Atlas Works, Pershore, Worcestershire.[12]Epicyclic gear manufacture was transferred from Bedford to Pershore in 1956.[3]
In 1988 the pump business was sold to Weir Pumps while the steam turbine business was sold to Allen Steam Turbines in Oakley, Bedfordshire.[16]
NEI was acquired by Rolls-Royce plc in 1989.[3] The diesel business continued at Queens Engineering Works, Bedford as part of the Rolls-Royce Power Engineering (RRPE) group, until the factory was closed in 2000.[17] Allen Diesels purchased the intellectual property rights of Allen diesel engines and operate from the Pilgrim Centre in Bedford.[18]
^ abLane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. London: Unicorn Press. pp. 7–8. ISBN0-906290-09-0.
^Lane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. London: Unicorn Press. p. 21. ISBN0-906290-09-0.
^"Messrs. Allen's Engineering Works". Bedfordshire Times & Independent. 6 January 1894.
^Lane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. London: Unicorn Press. pp. 43–45. ISBN0-906290-09-0.
^Lane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. London: Unicorn Press. pp. 37–38. ISBN0-906290-09-0.
^"The Wreck of the Titanic and Connections to Bedford". The Bedfordshire Times & Independent. 19 April 1912. p. 7.
^Lane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. Unicorn Press. pp. 64–65. ISBN0-906290-09-0.
^Lane, Michael R (1995). The Story of Queens Engineering Works Bedford - A History of W. H. Allens & Sons Co. Ltd. London: Unicorn Press. p. 77. ISBN0-906290-09-0.