Thomas Newcomen

Thomas Newcomen was an English inventor. He lived from 1664 to 1729. In 1712, he created the atmospheric engine. This helped solve a big problem in coal and tin mines. Water would often flood these mines, making it hard to keep them open. Newcomen worked to find better ways to pump the water out.

He was born in Dartmouth, in Devon, England. He came from a merchant family. Even though he was a Baptist preacher, he also worked as an ironmonger. His business focused on making and selling tools for the mining industry. His work changed how mines operated at that time.

Religious life

Thomas Newcomen was a preacher and a leader in the local Baptist church. After 1710, he led a group of Baptists. His father helped bring a well-known Puritan minister named John Flavel to Dartmouth. One of Newcomen's business contacts in London, Edward Wallin, was also a Baptist minister and knew Doctor John Gill from Horsleydown, Southwark. Newcomen's ties with the Baptist church in Bromsgrove helped spread his steam engine because engineers Jonathan Hornblower Sr. and his son were also part of the same church.

Developing the atmospheric engine

Main article: Newcomen atmospheric engine

Thomas Newcomen made an early kind of steam engine around 1712. He used ideas from two inventors, Thomas Savery and Denis Papin, to create a machine that could lift water out of mines. Savery had made a simple device with steam, but it did not work well for deep mines.

Newcomen improved the idea with a cylinder and a moving part called a piston. When steam went into the cylinder and then cooled, it made space that pulled the piston down. This movement lifted a heavy beam, which pulled a chain linked to a pump. The pump could push water out of the mine to the surface. Newcomen and his partner John Calley built the first engine at a coal mine in Tipton, in the West Midlands. You can see a copy of this old engine at the Black Country Living Museum nearby.

Later life and death

Not much is known about Thomas Newcomen’s later years. After 1715, a group called the 'Proprietors of the Invention for Raising Water by Fire' took care of his engine work. Newcomen died in 1729 at a friend’s home and was buried in a graveyard near the City of London, but we don’t know exactly where his grave is.

By 1733, about 125 of Newcomen’s engines were in use in many important mining areas across Britain and Europe. These engines helped coal mines in places like the Black Country and near Newcastle upon Tyne. They were also used in tin and copper mines in Cornwall, and in lead mines in Flintshire and Derbyshire.

After Newcomen

The Newcomen engine was used for about 75 years. It spread to many places in the UK and Europe. At first, it had expensive brass parts, but new iron casting methods made bigger cylinders. By the 1760s, cylinders up to about 6 feet (1.8 m) wide were used.

John Smeaton improved the engine's design in the early 1770s, and many people used his changes. By 1775, around 600 Newcomen engines had been built, though many were old or replaced by then.

The Newcomen engine was not very efficient because it lost heat when cooling the steam. This was fine where small coal was easy to find, but it cost more in places where coal was hard to get, like in Cornwall. After 1775, the engine was replaced in these areas by a better design made by James Watt. Watt's engine used a separate condenser to cool the steam, which saved fuel. Watt and his partner Matthew Boulton made a lot of money from these savings.

Watt also made the double-acting engine, which used both up and down movements for power. This was useful for textile mills. Even though early tries to use Newcomen engines for machines had mixed results because of jerky motion, things like flywheels helped fix these problems. By 1800, hundreds of non-Watt rotary engines were built, especially in mines and ironworks.

Even with Watt's improvements, Newcomen engines were still used for a long time because they were cheaper and simpler. More Newcomen engines than Watt engines were built even during Watt's patent period up to 1800. Many of Watt's ideas, like the Separate Condenser, were used in unofficial engines. After 1800, Newcomen engines kept being built with condensers added, and existing Newcomen engines were often updated with these condensers.

Surviving Newcomen engines

You can see examples of Newcomen engines at the Science Museum, London in England and the Ford Museum in Dearborn, Michigan, US, as well as other places.

In 1964, the Newcomen Society of London moved a Newcomen engine from Hawkesbury Junction, Warwickshire, to Dartmouth. This engine, known as the Newcomen Memorial Engine, dates back to around 1725. It now runs using water power instead of steam.

One of the last Newcomen engines still in its original location is at the Elsecar Heritage Centre near Barnsley in South Yorkshire. It was restored between 2012 and 2015. People can see it at the centre. Another working Newcomen engine is a modern copy at the Black Country Museum in Dudley, West Midlands. The Newcomen Memorial Engine in Dartmouth, Devon also moves, but it uses water power to operate.

Recognition

On 23 February 2012, the Royal Mail put out a stamp of Newcomen's steam engine. This was part of their "Britons of Distinction" series.