Measures of Central Tendency: Mean, Median and Mode
The effects of the cotton grin
1. About Eli
Whitney
Elio whitney was the maker of the Cotton Gin. He was born December 8, 1765 and Died
January 8, 1825. He invented the cotton gin which cleans dirty cotton. He got his patent
done on March 14, 1794. He was also a pioneeer, mechanical engineer, and manufacturer. but
he was best known as the inventor. He was manufactured muckets for the government, he
translated the concept of interchangable parts into a manufacturing system. He saw that a
machine to clean the seed from cotton could make the Couth prosperous and make its
inventor rich.
http://en.wikipedia.org/wiki/File:Cotton_gin_EWM_2007.jpg
2. Eli Whitney
In October of 1793 Eli Whitney sent a drawing of
the cotton gin to Thomas Jefferson who was the
Secretary of the State, in application for a patent.
Thomas Jefferson replied on November 16. “The
only requisite of the law now uncompelled with is
ds
the for warding a model, which being received, your
patent may be made out & delivered to your order
immediately.” Jefferson said
For more than a year Eli struggled to make a full-
size working machine based on the smaller model he
sent in. It only took him ten days to create the
small one.
http://havefunwithhistory.com/movies/cottonGin.html
http://www.madehow.com/inventorbios/72/Eli-Whitney.html
3. Eli Whitney
In October of 1793 Eli Whitney sent a drawing of
the cotton gin to Thomas Jefferson who was the
Secretary of the State, in application for a patent.
Thomas Jefferson replied on November 16. “The
only requisite of the law now uncompelled with is
ds
the for warding a model, which being received, your
patent may be made out & delivered to your order
immediately.” Jefferson said
For more than a year Eli struggled to make a full-
size working machine based on the smaller model he
sent in. It only took him ten days to create the
small one.
http://havefunwithhistory.com/movies/cottonGin.html
http://www.madehow.com/inventorbios/72/Eli-Whitney.html
4. Eli Whitney (continued)
“The cylinder is only two feet two inches in length and six
inches in diameter. Finally in February 1794 he completed
the model, to where he wanted it. In March he took it the
Philadelphia to demonstrate it in the office of the
Secretary of State, in order to get a patent for it. The
patent that Jefferson had approved the previous
November was issued to Eli on March 14, 1794.
6. His Invention
http://player.discoveryeducation.com/index.cfm?guidAssetId=A2F62B20-D7E4-44B9-8329-88896AC31C35&blnFromSearch=1&productcode=US
Eli Whitney is the one who made the cotton gin. He
made several before he made one that work. And the
Cotton Gin is whatmade the slaves job much easier.
This machine would take place of the Slaves job and is
rather neat, actually. You put the cotton in the machine
& it separates the cotton and the seeds and disposes
the seeds and leaves a deformed ball of clean cotton.
Nettrekker.com/eliwhitney/cottongin
7. http://www.google.com/imgres?imgurl=http://
upload.wikimedia.org/wikipedia/commons/c/c3/Eli’’
Other Inventions http://www.google.com/imgres?imgurl=http://www.history.com/images
_
Eli Whitney made many other inventions besides the cotton gin. Some examples
are:•Interchangeable Parts (When one part of a machine is broken, you can put
another part in its place that isn't the same.)
•Prototype Gunlocks (Created for muskets and was told by President Adams to make
15000 muskets.)
•Milling Machine (Modified lathe that turns out irregularly shaped parts. Without the
milling machine, it is difficult to see how standardized parts could ever have been
invented.)
Nettrekker.com/eliwhitney/inventions/interchaneable parts/prototype/millingmachine
