Who invented the Cotton Gin?
The machine is known as the most important invention of this outstanding person, though he had many other projects as well (for example, milling machine). Before the invention of the device, people had to do the monotonous work by hands. Workers also used some primitive tools but, actually, these tools didn't make the job easier and very often the seeds were mixed with fiber. It was really a Sisyphean task.
The invention was patented in 1794.