Which subsequent adjustments were introduced to mitigate the mechanical shortcomings of Whitney’s early model?

Answer

Roller gins and improved saw gins

The introduction of roller gins and later, improved saw gins, helped reduce the quality loss associated with Whitney’s original model by creating more precise separations with less fiber abrasion.

Which subsequent adjustments were introduced to mitigate the mechanical shortcomings of Whitney’s early model?
inventionagriculturecottonWeaknessgin