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While the American was speaking, the steam engine behind him had already heated the boiler, and began to slowly drive the cotton gin.
Two technicians poured large bundles of seed cotton, which is freshly picked cotton balls, into the feed hopper. Inside the machine, there are two rows of fast-rotating comb-like metal teeth, which catch the cotton fibers and pull them through a narrow mesh sieve into the drying chamber at the rear.
Because the cotton seeds are relatively large, most are filtered out by the comb teeth, and the few that slip through cannot pass through the sieve, leaving almost pure cotton fiber to enter the drying chamber.
The steam expelled from the steam engine is guided into the drying chamber, "drying" the cotton wadding.
When the technicians opened the drying chamber, what they took out was batches of lint cotton, now free of seeds.
