How did Eli Whitney's cotton gin primarily separate seeds from fiber?

Answer

Slender wires or teeth dragged fibers through narrow ginning ribs.

Whitney's design employed teeth mounted on a rotating cylinder that dragged the fibers through narrow ginning ribs; the seeds, being too large, were stripped away as they could not pass the ribs.

How did Eli Whitney's cotton gin primarily separate seeds from fiber?
inventionmachineagriculturecotton