Boulton and Watt
|Founded||Birmingham, England (1775)|
|Founder||Matthew Boulton and James Watt|
|Products||Steam engines (stationary and marine)|
Boulton & Watt was an early British engineering and manufacturing firm in the business of designing and making marine and stationary steam engines. Founded in the English West Midlands around Birmingham in 1775 as a partnership between the English manufacturer Matthew Boulton and the Scottish engineer James Watt, the firm had a major role in the Industrial Revolution and grew to be a major producer of steam engines in the 19th century.
The engine partnership
The partnership was formed in 1775 to exploit Watt's patent for a steam engine with a separate condenser. This made much more efficient use of its fuel than the older Newcomen engine. Initially the business was based at the Soho Manufactory near Boulton's Soho House on the southern edge of the then-rural parish of Handsworth. However most of the components for their engines were made by others, for example the cylinders by John Wilkinson.
In 1795, they began to make steam engines themselves at their Soho Foundry in Smethwick, near Birmingham, England. The partnership was passed to two of their sons in 1800. William Murdoch was made a partner of the firm in 1810, where he remained until his retirement 20 years later at the age of 76. The firm lasted over 120 years, albeit renamed "James Watt & Co." in 1849, and was still making steam engines in 1895, when it was sold to W & T Avery Ltd..
The business was a hotbed for the nurturing of emerging engineering talent. Among the names which were employed there in the eighteenth century were James Law, Peter Ewart, William Brunton, Isaac Perrins, William Murdoch, and John Southern.
The firm left an extremely detailed archive of its activities, which was given to the city of Birmingham in 1911 and is kept at the Library of Birmingham. The library has since obtained various other related archives.
An additional archive was donated to the Boulton and Watt collection in 2015. It represents the research carried out by John Richardson (Accession number 2015/049) The archive includes: A copy of his completed P.h.D.thesis submitted to the University of Reading in 1989. The original thesis remains the property of the University of Reading.
Display folders containing text and drawings from his detailed examination of the large number of portfolios of engineering drawings
Folders containing detailed handwritten notes on all portfolios examined. This information includes portfolio number, dates of drawings and comments on techniques used. Where applicable, the records cross reference with letters, books and other related literature on the firm of Boulton and Watt.
A selection of DVDs containing all text and the many drawings studied are also included in the archive.
This research is primarily concerned with the contribution of the firm of Boulton and Watt to engineering drawing used in design and manufacture.
The Australian Project
An opportunity arose in 1984 to evaluate the use of Boulton & Watt drawings made two hundred years earlier when Dr Richardson was asked to help the Museum of Applied Arts and Sciences, New South Wales Australia who were planning to restore and erect a Boulton and Watt engine. In the course of restoration the engine had been completely dismantled and the work revealed that the cylinder, valve gear, condenser and air pump had all been modified at least once from the original design. Reports from Australia confirmed that the engine was erected in the Power House Museum, Ultimo, New South Wales. This engine was originally designed and built for Samuel Whitbread in 1784 and the job portfolio (B & W 4) contains forty four drawings that relate to it. Copies of the different types of drawings were made and sent out; they provided all the necessary information required to re assemble and erect the engine. (Dr Louise Crossley 1984)
Preserved operational engines
- Smethwick Engine, Thinktank science museum, Birmingham, manufactured 1779.
- Whitbread Engine, Powerhouse Museum, Sydney, manufactured 1785, 25 inch (0.64 m) bore, 72 inch (1.83 m) stroke.
- Crofton Pumping Station manufactured 1812, 42.25 inch (1.07 m) bore, 84 inch (2.13 m) stroke.
- Kew Bridge Steam Museum manufactured 1820, 64 inch (1.62 m) bore, 96 inch (2.44 m) stroke.
- Papplewick Pumping Station two engines, manufactured 1884, 46 inch (1.17m) bore, 90 inch (2.29) stroke. Believed to be the last engines manufactured by the company. 
- Roll, Erich (1930). An Early Experiment in Industrial Organisation : being a History of the Firm of Boulton & Watt, 1775-1805. Longmans, Green and Co. p. 320.
- Buchanan, R. A. (1978). "Steam and the engineering community in the eighteenth century". Transactions of the Newcomen Society. 50: 198.
- "The Boulton and Watt Engine". Kew Bridge Steam Museum. Retrieved 2011-08-08.
- "Last engines manufactured". Papplewick Pumping Station Trust. Retrieved 2017-05-07.
|This article needs additional citations for verification. (March 2011) (Learn how and when to remove this template message)|
- Hills, Richard L. (2002). James Watt: His Time in Scotland (1736-1774). Landmark Publishing. ISBN 1-84306-045-0.
- The Non-Rotative Beam Engine Chapter 3: The Boulton and Watt Engine Maurice Kelly ISBN 0-9536523-3-5
- Archives of Soho at Birmingham Central Library.
- Revolutionary Players website
- Cornwall Record Office Boulton & Watt letters