Automobiles history (continue)

Chariots of fire

The next major development came in 1712 when "the very ingenious Mr Thomas Newcomen" (as his friends called him) built a massive machine for pumping rainwater out of coal mines. It was based around a huge 2-m (7-ft) high metal cylinder with a piston inside that could move up and down like the plunger in a bicycle pump.

Every so often, steam from a boiler (a sort of gigantic coal-fired kettle) squirted into the space in the cylinder underneath the piston. Then cold water was squirted in to make the steam condense, creating a partial vacuum directly under the piston. Since the air pressure in the space above the piston was now greater than that in the space beneath it, the piston moved down. When the vacuum was released, the piston rose back up again. The rising and falling piston operated a pump that slowly sucked the water from the mine.

Machines like this were originally called fire engines—they were, after all, powered by burning coal—though they soon became known as steam engines when people realized that controlling steam was the key to making them work more efficiently. One of those people was a Scotsman named James Watt (1736–1819). In 1764, Watt redesigned Newcomen's engine so it was both a fraction the size and more powerful. Where Newcomen's piston had simply tipped a beam up and down, Watt's turned wheels and gears. Large Watt engines soon found their way into factories, where they became the powerhouse of the Industrial Revolution and people did away with horses for operating pumps and other machines. Coal seemed to be the fuel of the future.

Steam engines were still too big and heavy to use in vehicles, but that didn't stop people trying. In 1769, Frenchman Nicholas Joseph Cugnot (1725–1804) used steam-engine technology to make a lumbering, three-wheeled tractor for pulling heavy army cannons. Many people consider this the world's first car, but it was incredibly primitive by today's standards. With a top speed of just 5 km/h (3mph), you would have thought it posed little danger. But the "fardier à vapeur" (steam wagon) was heavy and hard to steer and, just two years later, the first ever car had the first ever car crash when Cugnot rammed it through a brick wall. He was given a speeding ticket and thrown in jail.

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