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What is the Cotton Gin?

Eli Whitney patented his cotton gin in 1794.
A cotton shirt.
Cotton bolls on a branch.
Cotton field ready to be harvested.
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  • Written By: Brendan McGuigan
  • Edited By: Bronwyn Harris
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  • Last Modified Date: 12 March 2014
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The cotton gin is probably one of the most famous, and most impacting, inventions in American history, and its inventor, Eli Whitney, is a name known by most schoolchildren. It is a machine for sorting out cotton, removing the seeds and seedpods from the fibers, which automated a manpower-intensive task. The name is simply a shortening of the name cotton engine, and simply refers to the fact that it was a basic machine.

The early history of the device actually dates back thousands of years, to simple machines from as far back as the 1st century. These machines were simply rollers, based on similar tools used to grind grain. Although they did the job, they required a great deal of skill and control by the operator, making them ultimately little more effective than hand sorting. Improvements appeared sometime in the 12th century, in both China and India, and by the 16th century were being used fairly widely throughout the Mediterranean. Even this improved two-roller device was still not incredible efficient, however, and it wasn’t until the modern cotton gin that the automation of cotton separation became truly feasible.

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In 1794, Eli Whitney was awarded a patent for his cotton gin, although historical evidence suggests that the original idea may indeed have been from a woman, Catherine Littlefield Greene, who for social reasons did not apply for the patent herself. Within a few years, improvements had been made to Whitney’s original design, and the machine became a staple of American and English cotton processing. The invention allowed the cotton industry to boom like never before, changing the face of textiles and having ripple effects throughout the industrial world.

As the processing of cotton became easier, the price of cotton fabric plummeted and demand skyrocketed. Clothing once made out of other materials began to be made out of cotton, and people from all classes were suddenly needing huge amounts of it. As a result, plantations boomed throughout England and the American South, replacing other crops and leading to mass clearing of land to make space for huge cotton plantations.

These new plantations created an increased demand for manpower, as well, leading to a boom in the slave trade. Enormous numbers of slaves were brought into the United States to work the fields to supply the cotton that had become such a sudden commodity. A great deal of the wealth of the American South in the Antebellum period can be directly traced to Whitney’s invention.

Whitney’s improved cotton gin was able to process around 50 pounds (23 kg) of cotton lint a day, making it an enormous improvement over earlier methods. The machine itself was quite simple, with a large cylinder made of wood that had rows of spikes around it. These spikes grabbed on to the cotton lint and pulled it through a tight grid. The tines of this grid were spaced so closely together that the small sticky seeds found in cotton lint couldn’t pass through them, becoming caught, and allowing only clean cotton to make its way through.

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Discuss this Article

anon304108
Post 7

What happened after slavery was abolished? How did that affect the cotton gin?

lluviaporos
Post 6

@Mor - And, sadly, it also led to the increase of slavery and probably indirectly to the Civil War as well. Unfortunately, while it took most of the labor costs out of cleaning the cotton, it worked so efficiently that they needed more people harvesting and growing the cotton to keep up with it. And since cotton had become so much cheaper to produce, it became more common in clothes, so there was much more demand.

So a bunch of families in the South became very rich and in order to remain rich and get richer, they needed more and more slaves.

I don't think that's what Mr Whitney intended when he invented his gin, but unfortunately you can't always predict the way that new technology is going to change the world.

Mor
Post 5

@anon70008 - I'm not sure exactly when it was first used in a factory, but Whitney's invention was recognized for its genius right away, so it wouldn't have been long after he invented it in 1794.

The cotton gin was actually one of the things that drove the development of modern factories, since it was capable of processing so much cotton at one time and it was fairly inexpensive to run it compared to a bunch of people. The cotton gin invention influenced the industrial revolution both in the United States and in Europe.

umbra21
Post 4
@anon79872 - Well, sloe gin is a type of gin. I mean it's a traditional way to flavor gin. My friend made a whole bunch of it a while ago, you just pack sloes into a bottle and add gin, then wait a bit.

Gin in the sense of a cotton gin, is just short for "engine". If you say the words "cotton engine" you can see that the tongue sort of stumbles over them, so it was natural for people to shorten it over time.

anon79872
Post 3

I'm so embarrassed! I always thought a "Cotton Gin" was a type of cocktail made with Gin. In a way that was almost like people thinking that "Sloe Gin" is a type of gin.

Thanks for setting me straight.

anon70008
Post 2

when was the cotton gin first used in a factory? and who made it?

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