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The Semaphore Telegraph, the Cotton Gin, Eli Whitney, and the Hydraulic Press

Essay #31 History Of Inventions

Hello, in today’s essay I will be writing about The Semaphore Telegraph, The Cotton Gin, Eli Whitney, and the Hydraulic Press. Let’s get started!

The Semaphore Telegraph

Cloude Chappe was born in France in 1763, and his uncle was a famous astronomer that taught him how to use the telescopes. The Chappe brothers designed the visual telegraph for use in war time in France. The first semaphore towers were ready in 1792, and it visually relayed messages. Messages were coded into visual symbols, they were kind of like hand symbols; if one part is pointing up and one part is pointing down and the middle is tilted let’s say that would be an “A”. France used the system to defend against their enemies, what I mean by defend is they could communicate faster. They were extended all over the country; Great Britain follow behind them and so did Portugal. It eventually evolved into the electric telegraph which then evolved into other things that evolved into the phone.

The Cotton Gin

The cotton gin separates seeds from cotton, or the fiber; it squeezes them out. The cotton gin sped up the proces approximately 20 times faster. The price of cotton dropped and production went through the roof! Small southern towns grew into large and important cities. The cotton gins were the most effective device people had in a long time. The cotton gin was also very, very easy to use; you only had to turn a lever, or spin a lever, which ever one you want to say. Overall, the cotton gin was a fabulous invention and was amazing.

Eli Whitney

Eli Whitney was born in 1765 in Massachusetts; his dad let him set up a metal shop on his farm. Later when he grew up, he went to Yale for college to become a lawyer. His money ran out so he couldn’t afford school, so instead, Whitney became an inventor. He invented the cotton gin. He went almost broke defending his cotton gin patent. He then popularized interchangeable parts in 1796, and he started to make a little bit of money back. The US government contracted him to build muskets with interchangeable parts; he build a factory to manufacture them. He open his factory to visitors, and this time he did not patent his discovery, or invention, whatever you wanna call it. Samuel Colt became famous, or successful because of Eli Whitney’s interchangeable parts invention, because Samuel Colt invented the revolver, that uses interchangeable parts.

The Hydraulic Press

Joseph Brahmah was born in England in 1758; he opened his own carpentry business in London. A lecture on locks captured his attention, and made him want to make an un-pickable lock. He worked with Mildly and invented the hydraulic press and the un-pickable lock that was un-pickable for 17 years. The hydraulic press flattens metal, and not any weak metal, I’m talking thick hard metal, it also even crushes gold!! The invention spread through the machine tool industry. The press was used in America to process certain crops, such as soy beans. Garbage trucks use the hydraulic press, and also car crushers, A.K.A a hydraulic press that literally crushes cars! That’s… very cool. I would not want to stick my hand under one of those. Anyway, overall the hydraulic press is a cool, useful, and popular invention.

Thank you for reading this essay, I hope you enjoyed. What was your favorite thing you learned about this entire week? Anyway by and see you next time.


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