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He often described as the inventor of the steam engine, was the key figure of the Industrial Revolution. 

Actually, Watt was not t the first man to build a steam engine. Similar devices were described by Hero of Alexandria in the 1st century. In 1698, Thomas Savery patented a steam engine that was used for pumping water, and in 1712 an Englishman, Thomas Newcomen, patented a somewhat improved version. Still, the Newcomen engine had such a low efficiency that it was useful only for pumping water out of coal mines.

Watt himself became interested in the steam engine in 1764, while repairing a model  of Newcomen's device. Watt, althought he had received only one year's trainining as an intrument maker, had great inventive talent. Despite of at that time, there was limited time to for everyone to focus on what they loved. Because, at that time, there have large gap between current facilities which been provide by government. Everyone seems easew to have solution both monetary, situation and other occasion.

However, Watt achievement didnt shown us those hard time were obstacle for him to do do many failure. Yet, Watt's first great improvement, which he patented in 1769, was the addiction of separate condensing chamber. He also insulated the steam cyclinder, and in 1782 he invented the double acting engine. Together with some smaller improvements, these innovations resulted in an increase in the efficiency of the steam engine by a factor of four or more. In practise, this incresase of efficiency meant the difference between a clevefr but not really vwery useful device, and an instrument of enormous industrial utility.

Watt also invented a set of gears for converting the reciprocal motion of the engine into rotary motion. This device greatly increased the number of uses to which steam engines could be put. Watt also invented a centrifugal governor, by which the speed of the engine could be automatically controlled; a pressure gauge; a counter; an indicator; and a throttle valve, in addition to various other improvements.

On the other hand, Watt had has his own weakness. Watt himself did not have a good head of business. However, in 1775 he formed a partnership with Matthew Boulton , who was an engineer and a very capable businessman.Over the next twenty-five years, the firm of Watt and Boulton manufactured a large number of steam engines, and both partners became wealthy men because their succeding production and persuasion efforts.

It would be difficult to exaggerate the importance of the steam engine. Plus, there were many other inventions in market to meet those demanding; also, they played their own role in the Industrial Revolution. There were developments in mining, in metallurgy, and in many sorts of Industrial machinery.The maJority of the other inventions, however, represented small improvements, and no inventions, however, represented small inventions, and there wasn't able to compete their mechanism which had has give give impact at that time and also been basic to be as starting medium to our generations, nowaday.
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