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James and Frederick Howard, sometimes J. and F. Howard, sometimes Howards, of Britannia Ironworks, Bedford.
1837 Company established
1851 Award at the 1851 Great Exhibition. See details at 1851 Great Exhibition: Reports of the Juries: Class IX.
1851 Employing 80 men 
1861 Employing 400 men and boys 
1863 Advert for Howard's Patent Horse Rakes. More than 12,000 in use. James and Frederick Howard of Britannia Iron Works, Bedford. 
1866 Details of their patent agricultural engine 
1870 Read a synopsis of the company in The Engineer 1870/09/16.
1871 Employing 700 hands. 
1876 Exhibitor at the Royal Agricultural Show at Birmingham with their 'Farmers Engine' and tackle 
1881 Employing 650 persons 
1885 Exhibited their design of light permanent way
1894 Smithfield Club Show. Exhibited an oil engine. Image in 'The Engineer'
1894 Royal Agricultural Show. Exhibitor. Article and illustration on their apparatus for steaming compressed hay
1894 Introduced a range of horizontal oil engines
1898 'The Britannia Iron Works, the property of Messrs. James and Frederick Howard, occupy an area of about 20 acres. Tramways extend all round the works for the conveyance of materials to and from the different departments, the largest of which is the foundry, a rectangular building, more than 250 feet long, and covering about an acre ; the departments for fitting, forging, finishing, painting, and forwarding are all admirably adapted to their various purposes ; these magnificent works are built in part of the site of Caldwell Priory, founded about he year 1200: the Midland and London and North-Western railways run into the works, and the river Ouse, which is navigable by steamers and barges to the sea flows alongside and combines with the railways to give these works almost unrivalled advantages in the transit of goods'.
1900 June. Royal Agricultural Show at York. Agricultural implements
1900 Paris Exhibition. Showed an engine (as Howard and Co of Bedford)
1911 Royal Agricultural Show. Four-furrow plough
1911 Smithfield Club Show. Exhibited ploughs including steam and motor types
1919 Became part of Agricultural and General Engineers
1920 Showed a powerful steam driven cultivator for working on heavy or light land at the Darlington Agricultural Show 
1932 F. C. Hibberd and Co company acquired the drawings, patents etc. from the liquidator of James and Frederick Howard Ltd of Bedford who had built internal combustion locos from about 1923 to 1931.