History 4 lesson 170

Semaphore Telegraph

Claude Chappe was born in France in 1763, his uncle was a famous astronomer, he taught Claude how to use telescopes. The Chappe brothers designed a visual telegraph for use in wartime in France.The frost semaphore towers were ready in 1792. Semaphore telegraph visual symbols. They were read by messengers using telescopes. Messages could travel 286 miles per hour. France used the system to descend against their enemies. They were extended all over the country. Great Britain followed behind them, so did Portugal. In North America, they used it for commerce information.

Cotton Gin

  Cultures tired easily removing cotton seeds, Eli Whitney couldn’t afford to go to law school. He took a tutoring job in South Carolina in 1792. Mrs. Greene persuaded him to visit her plantation in Georgia. He invented the cotton gin after listening to talk about seed extraction. Cotton gin separates seeds from the fiber. It squeezes them out. It sped up cotton processing approximately 20 times. The price of cotton dropped. Whitney couldn’t enforce his patent. Cotton production went through the roof. Southern towns grew into large important cities.  

Eli Whithey

Whithey was born in 1765 in massachus He grew bored with the routine farm work. HIs dad let him set up a metal shop. He went to yale for college. His money ran out so he couldn’t afford law school. Whitney became an inventor. He invented the cotton gin. He popularized interchangeable parts in 1798. The US government contracted him to build muskets. Whitney almost went broke defending his cotton gin patent. He put on a sales show for the president. He opened his factory to visitors: no more patents. Local craftsmen came to gain ideas. He also had influential local contoots. Whitney produced the success of Samuel Colt. The Texas Revolution occurred in 1836. The Texas Rangers bought thouthands of revolvers from Colt. Colt used Whitney’s factory beginning around 1846 to build his guns. This led to the Cadillac and the “American system” of manufacturing.

                 Hydraulic Press

Joseph Braman was born in England in 1748. He opened his own carpentry business in London. And also installed toilets through the 17700s.  A lecture on locks captured his attention in 1784. Braman worked with Maudsly and invented the hydraulic press in 1795. Hydraulic press flatten metal. Pascal’s law amplifies in[ut force from level. Amplification is determined by the area of the two pistons. THe fluid doesn’t compress. It spread throughout the machine tool industry. Flax seed was turned into flaxseed oil. Edwin invented a new kind of press which became popular in oil factories in America. 

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