Watt's Partner: Matthew Boulton

Matthew Boulton FRS [Fellow of the Royal Society] (3 September 1728 – 17 August 1809) was an English manufacturer and business partner of Scottish engineer James Watt. In the final quarter of the 18th century, the partnership installed hundreds of Boulton & Watt steam engines, which were a great advance on the state of the art, making possible the mechanisation of factories and mills. Boulton applied modern techniques to the minting of coins, striking millions of pieces for Britain and other countries, and supplying the Royal Mint with up-to-date equipment.

                                                            Matthew Boulton, 1792

Born in Birmingham, he was the son of a Birmingham manufacturer of small metal products who died when Boulton was 31. By then Boulton had managed the business for several years, and thereafter expanded it considerably, consolidating operations at the Soho Manufactory, built by him near Birmingham. At Soho, he adopted the latest techniques, branching into silver plate, ormolu and other decorative arts. He became associated with James Watt when Watt's business partner, John Roebuck, was unable to pay a debt to Boulton, who accepted Roebuck's share of Watt's patent as settlement. He then successfully lobbied Parliament to extend Watt's patent for an additional 17 years, enabling the firm to market Watt's steam engine. The firm installed hundreds of Boulton & Watt steam engines in Britain and abroad, initially in mines and then in factories.

Boulton was a key member of the Lunar Society, a group of Birmingham-area men prominent in the arts, sciences, and theology. Members included Watt, Erasmus Darwin, Josiah Wedgwood and Joseph Priestley. The Society met each month near the full moon. Members of the Society have been given credit for developing concepts and techniques in science, agriculture, manufacturing, mining, and transport that laid the groundwork for the Industrial Revolution.

Boulton founded the Soho Mint, to which he soon adapted steam power. He sought to improve the poor state of Britain's coinage, and after several years of effort obtained a contract in 1797 to produce the first British copper coinage in a quarter century. His "cartwheel" pieces were well-designed and difficult to counterfeit, and included the first striking of the large copper British penny, which continued to be coined until decimalisation in 1971. He retired in 1800, though continuing to run his mint, and died in 1809. His image appears alongside James Watt on the Bank of England's new Series F £50 note.

Partnership with Watt

Boulton's Soho site proved to have insufficient hydropower for his needs, especially in the summer when the millstream's flow was greatly reduced. He realised that using a steam engine either to pump water back up to the millpond or to drive equipment directly would help to provide the necessary power. He began to correspond with Watt in 1766, and first met him two years later. In 1769 Watt patented an engine with the innovation of a separate condenser, making it far more efficient than earlier engines. Boulton realised not only that this engine could power his manufactory, but also that its production might be a profitable business venture.

After receiving the patent, Watt did little to develop the engine into a marketable invention, turning to other work. In 1772, Watt's partner, Dr. John Roebuck, ran into financial difficulties, and Boulton, to whom he owed £1,200, accepted his two-thirds share in Watt's patent as satisfaction of the debt. Boulton's partner Fothergill refused to have any part in the speculation, and accepted cash for his share. Boulton's share was worth little without Watt's efforts to improve his invention. At the time, the principal use of steam engines was to pump water out of mines. The engine commonly in use was the Newcomen steam engine, which consumed large amounts of coal and, as mines became deeper, proved incapable of keeping them clear of water. Watt's work was well known, and a number of mines that needed engines put off purchasing them in the hope that Watt would soon market his invention.

Boulton boasted about Watt's talents, leading to an employment offer from the Russian government, which Boulton had to persuade Watt to turn down. In 1774 he was able to convince Watt to move to Birmingham, and they entered into a partnership the following year. By 1775 six of the 14 years of Watt's original patent had elapsed, but thanks to Boulton's lobbying Parliament passed an act extending Watt's patent until 1800. Boulton and Watt began work improving the engine. With the assistance of iron master John Wilkinson (brother-in-law of Lunar Society member Joseph Priestley), they succeeded in making the engine commercially viable.

In 1776 the partnership erected two engines, one for Wilkinson and one at a mine in Tipton in the Black Country. Both engines were successfully installed, leading to favourable publicity for the partnership. Boulton and Watt began to install engines elsewhere. The firm rarely produced the engine itself: it had the purchaser buy parts from a number of suppliers and then assembled the engine on-site under the supervision of a Soho engineer. The company made its profit by comparing the amount of coal used by the machine with that used by an earlier, less efficient Newcomen engine, and required payments of one-third of the savings annually for the next 25 years. This pricing scheme led to disputes, as many mines fuelled the engines using coal of unmarketable quality that cost the mine owners only the expense of extraction. Mine owners were also reluctant to make the annual payments, viewing the engines as theirs once erected, and threatened to petition Parliament to repeal Watt's patent.

The county of Cornwall was a major market for the firm's engines. It was mineral-rich and had many mines. However, the special problems for mining there, including local rivalries and high prices for coal, which had to be imported from Wales, forced Watt and later Boulton to spend several months a year in Cornwall overseeing installations and resolving problems with the mineowners. In 1779 the firm hired engineer William Murdoch, who was able to take over the management of most of the on-site installation problems, allowing Watt and Boulton to remain in Birmingham.

The pumping engine for use in mines was a great success. In 1782 the firm sought to modify Watt's invention so that the engine had a rotary motion, making it suitable for use in mills and factories. On a 1781 visit to Wales Boulton had seen a powerful copper-rolling mill driven by water, and when told it was often inoperable in the summer due to drought suggested that a steam engine would remedy that defect. Boulton wrote to Watt urging the modification of the engine, warning that they were reaching the limits of the pumping engine market: "There is no other Cornwall to be found, and the most likely line for increasing the consumption of our engines is the application of them to mills, which is certainly an extensive field." Watt spent much of 1782 on the modification project, and though he was concerned that few orders would result, completed it at the end of the year. One order was received in 1782, and several others from mills and breweries soon after. George III toured the Whitbread brewery in London, and was impressed by the engine. As a demonstration, Boulton used two engines to grind wheat at the rate of 150 bushels per hour in his new Albion Mill in London. While the mill was not financially successful, according to historian Jenny Uglow it served as a "publicity stunt par excellence" for the firm's latest innovation. Before its 1791 destruction by fire, the mill's fame, according to early historian Samuel Smiles, "spread far and wide", and orders for rotative engines poured in not only from Britain but from the United States and the West Indies.

The pumping engine for use in mines was a great success. In 1782 the firm sought to modify Watt's invention so that the engine had a rotary motion, making it suitable for use in mills and factories. On a 1781 visit to Wales Boulton had seen a powerful copper-rolling mill driven by water, and when told it was often inoperable in the summer due to drought suggested that a steam engine would remedy that defect. Boulton wrote to Watt urging the modification of the engine, warning that they were reaching the limits of the pumping engine market: "There is no other Cornwall to be found, and the most likely line for increasing the consumption of our engines is the application of them to mills, which is certainly an extensive field." Watt spent much of 1782 on the modification project, and though he was concerned that few orders would result, completed it at the end of the year. One order was received in 1782, and several others from mills and breweries soon after. George III toured the Whitbread brewery in London, and was impressed by the engine. As a demonstration, Boulton used two engines to grind wheat at the rate of 150 bushels per hour in his new Albion Mill in London. While the mill was not financially successful, according to historian Jenny Uglow it served as a "publicity stunt par excellence" for the firm's latest innovation. Before its 1791 destruction by fire, the mill's fame, according to early historian Samuel Smiles, "spread far and wide", and orders for rotative engines poured in not only from Britain but from the United States and the West Indies.

Between 1775 and 1800 the firm produced approximately 450 engines. It did not let other manufacturers produce engines with separate condensers, and approximately 1,000 Newcomen engines, less efficient but cheaper and not subject to the restrictions of Watt's patent, were produced in Britain during that time. Boulton boasted to James Boswell when the diarist toured Soho, "I sell here, sir, what all the world desires to have—POWER." The development of an efficient steam engine allowed large-scale industry to be developed, and the industrial city, such as Manchester became, to exist.^[

https://en.wikipedia.org/wiki/Matthew_Boulton