manufacturing other products – often needing years of development. The management realised their future was in doubt, so looked for a suitable company to combine with: the management chose Ruston. On 11 September 1918, employing about 3,000 people at the time, the company was bought out by Ruston & Proctor of Lincoln. Surviving machines Very few of the early machines built by Richard Hornsby & Co. survive, but examples of the major types are still to be found. A working example of a Hornsby Oil tractor can be seen at some vintage vehicle shows in the UK, and another example is under restoration in Australia. Several examples of Hornsby Ackroyd oil engines survive in preservation. The Track assembly of the Hornsby Steam Tractor survives. A number of Hornsby-built steam engines and tractors are in preservation, with "The Traction Engine Register 2008" listing 12 portable engines and 3 traction engines in the UK. One example – no. 1851 built in August 1871 – is in the Science Museum's store at Wroughton, with another (example no. 7297) at the Museum of Lincolnshire Life, Lincoln. See also History of the internal combustion engine Ruston (engine builder) Ruston, Proctor and Company Marshall, Sons & Co. Clayton & Shuttleworth References Hornsby Steam Chain Tractor website One Hundred Years of Good Company (history of R & H), by Bernard Newman, 1957, Northumberland Press. Hornsby Builders Catalogue, Lincoln 1958. External links Scale model of Hornsby Chain Tractor at 2005 Harrogate Model Engineering Show Dedication to the only commercially-sold Hornsby caterpillar crawler Hornsby Steam Chain Tractor website Video clips Tank Chats No. 23 Hornsby Tractor from the Tank Museum 1908 promotional film (German subtitles) from the British Film Institute 1/3 scale Hornsby Tractor Scale model Hornsby Tractor at Stapleford Steam 2008 in Leicestershire 1905 Hornsby-Akroyd engine at the Great Dorset Steam Fair in 2005 Defunct manufacturing companies of the United Kingdom Companies based in Grantham Hornsby Manufacturing companies established in 1828 Manufacturing companies disestablished in 1918 Agricultural machinery manufacturers of the United Kingdom Tractor manufacturers of the United Kingdom Caterpillar Inc. Diesel engine manufacturers 1815 establishments in England British companies established in 1828 1918 disestablishments in England 1918 mergers and acquisitions British companies disestablished in 1918 Ruston (engine builder)