In 1712, an English inventor and ironmonger invented the first atmospheric engine laying the foundation for the industrial revolution: How Thomas Newcomen's invention changed the world?

In 1712, an English inventor and ironmonger invented the first atmospheric engine at a time when mines faced a problem with water. Thomas Newcomen developed a practical steam engine that could pump water from deep coal and tin mines. He worked with John Calley, a plumber and glazier, during years of experiments. The engine used steam, a piston, a cylinder, atmospheric pressure and cold water. Its purpose was not to power factories at first. It was built to remove mine water. The machine allowed miners to continue working in deeper shafts and helped establish the use of steam power in industry.

In 1712, an English inventor and ironmonger developed the atmospheric engine

Thomas Newcomen was an English inventor and ironmonger from Dartmouth. He developed the first commercially practical atmospheric steam engine around 1712. The machine used steam to create a vacuum inside a cylinder. Atmospheric pressure then pushed a piston downward. The movement of the piston operated a beam connected to a pump. The pump removed water from mine shafts.


The engine addressed a problem faced by British coal and tin mines. As miners moved below the level of groundwater, water entered the shafts. Removing that water required continuous work. Earlier methods included animals and other mechanical systems. Newcomen's engine provided a way to operate a pump using steam power.

The machine did not depend on high-pressure steam to push the piston. Instead, steam was condensed inside the cylinder. Cold water created a vacuum, and atmospheric pressure supplied the force that moved the piston. This operating method also meant that the engine avoided some of the risks linked to high-pressure steam boilers.

Who was Thomas Newcomen?

Thomas Newcomen came from a family whose history was connected to Lincolnshire, London, Ireland and Devonshire. His family had earlier held land at Saltfleetby in Lincolnshire. The family lost its manor during the reign of Henry VIII following the Lincolnshire Rising of 1536. Members of the family later moved to other parts of Britain.

Newcomen's father, Elias, was a freeholder and merchant. He continued a seafaring business and owned the ship Nonsuch. His mother was Sarah. Thomas had a brother, John, who later became an apothecary.

Little information exists about Newcomen's education. One account says he was apprenticed to an ironmonger in Exeter. He probably learned to read and write and may have entered his father's business. During the 1680s, he operated a business in Dartmouth as a merchant and ironmonger. He sold hardware and metal products, including products made in his own shop.

Newcomen married Hannah Waymouth when he was 42. They had two sons, Thomas and Elias, and a daughter, Hannah. He also became a Baptist preacher and teacher. Part of the house he leased in Dartmouth was used for Baptist services. His business required travel, and he also preached to Nonconformist congregations.

How did Newcomen's business lead to the engine?

Newcomen called himself an ironmonger. Dartmouth records show that he supplied locks, latches and nails. He also repaired the town clock and served as Overseer of the Poor. His business may have been larger than a local shop. He may have traded tin and iron between Devon, the Midlands and other markets.

Newcomen worked with John Calley, a plumber and glazier who was also a Baptist. Calley had experience with metal and wooden pipes. This knowledge helped in the construction of engine parts and the pipes used in mine pumps. Early accounts sometimes credited the engines to both Newcomen and Calley.

The two men spent between 10 and 14 years working with small models before the first known successful atmospheric steam engine was erected in 1712 at Coneygree Coalworks in Tipton, southeastern England. Their work focused on using steam to remove air from a piston cylinder. Atmospheric pressure could then move the piston and operate a beam connected to a mine pump.

What was different about Newcomen's engine?

Thomas Savery had earlier developed a steam pump and received a patent in 1698 for raising water using fire. Savery's system did not use the same heavy mechanical moving parts as Newcomen's engine. Savery's system also faced problems because boilers were not yet able to safely contain high steam pressures and his design lacked steam safety valves. Newcomen's engine used atmospheric pressure instead.

Newcomen could not obtain a separate patent because Savery already held the main patent. At some point between 1705 and 1715, Newcomen reached an agreement under which his engines operated under Savery's patent.

Savery's widow later transferred patent rights to a joint-stock company. The company was called the Proprietors of the Invention for Raising Water by Fire. Newcomen was one of its members. The proprietors raised £21,600 and began building engines for mines and water-pumping stations. More than 100 Newcomen engines were built in England and Europe during the following 75 years.

How did cold water improve the engine?

One development in the engine may have resulted from an accident during work on a prototype. Cold water from a jacket surrounding the cylinder leaked through a faulty hole into the steam-filled cylinder. The resulting vacuum caused the piston to move with force and damaged parts of the prototype.

Newcomen and Calley learned from the incident that cold water injected directly into the steam-filled cylinder could condense steam faster. This produced a vacuum and allowed atmospheric pressure to push the piston downward. By 1733, engines had pistons ranging from 21 inches to 87 inches in diameter. Their ability to lift water became a reason for their use in mines.

Where were Newcomen engines used?

The Tipton engine led to the construction of more engines at coal and tin mines. A 1716 advertisement in the London Gazette referred to engines operating in Stafford, Warwick, Cornwall and Flint. Before 1725, an engine had been installed at a mine at Elphingstone in Scotland.

In 1725, another engine was built at Edmonstone Colliery in Midlothian. It cost more than £1,000. The brass cylinder accounted for one-fourth of the cost. The proprietors received a royalty of £80 per year for an eight-year licence.

The technology also reached continental Europe. In 1722, a Newcomen steam engine was erected at Königsberg in the mining district of Upper Hungary, identified in the source as now Czechoslovakia. In 1726, another engine was built at Passy outside Paris to raise water from the Seine River for the city's water supply. Newcomen may have attended its dedication.

How did the engine affect the Industrial Revolution?

Newcomen's engine allowed mines to remove water from deeper shafts. This meant miners could continue extracting coal and tin after shallow deposits became harder to access. The engine also reduced dependence on horses and other forms of mechanical work for mine pumping. Continuous pumping helped maintain fuel supplies and supported early industrial development.

The engine used large amounts of coal because much heat and energy were lost during operation. It was therefore more practical near mines where coal was available at a lower cost. Its main use remained at mine sites and locations where fuel could be obtained without high transport costs.

The engine also became a basis for later steam-engine development. James Watt later improved the design by introducing a separate condenser. Newcomen's machine therefore became part of the development that led to more efficient steam power.

How many Newcomen engines were built?

The engine spread across Britain and Europe after its introduction. At least 110 Newcomen engines had been erected by 1733. Before 1800, at least 1,454 atmospheric engines, including rotary types, were built in England. Some Newcomen engines raised water that then turned water wheels. This allowed the engine to provide rotary power for mills and factories.

Newcomen did not invent every idea used in the steam engine. Earlier scientists and inventors, including Salomon de Caus, David Ramsay, the marquess of Worcester, Samuel Morland and Denys Papin, had contributed ideas related to heat engines and steam power. Papin published a paper about the idea of a steam engine in 1690. Newcomen's contribution was to combine existing ideas and put them into industrial use.

What happened to Thomas Newcomen?

Newcomen died from a fever in London in August 1729. He had travelled there, probably for business. He was buried at Bunhill Fields, but the exact location of his grave is not known.

Only one document in his handwriting is known to remain. There is also no known portrait of him. The available records provide little information about his private life. The source also states that he probably did not gain much financially from his invention.

At least three Newcomen engines have been preserved in museums. One is at the Science Museum in South Kensington, England. Another was re-erected in Dartmouth to mark the 300th anniversary of his birth. A third was restored by Henry Ford in 1930 at his Dearborn Museum in Michigan.

Why is the Newcomen engine important today?

The importance of Thomas Newcomen's engine comes from its use of steam power for industrial work. The machine combined a boiler, cylinder, piston and automatic valve system. These components became part of later steam engines.

The engine provided a practical way to pump mine water and helped mines reach deeper deposits. Its use spread to water supply systems and other industrial applications.

The source describes Newcomen as a pioneer in mechanical engineering because he combined existing components into a machine that could be used in industry. His atmospheric engine became part of the development of steam power and the Industrial Revolution.