Her patents covered textile and shoe-making machinery, domestic devices, and even a “sleeve-valve” automobile engine. Knight’s greatest success, however, was the first machine to make the square-bottomed paper bags.
Ang kanyang mga patente sakop tela at sapatos na-paggawa ng makinarya, domestic na aparato, at kahit na isang "manggas-balbula" automobile engine. pinakadakilang tagumpay Knight's, gayunman, ay ang unang makina upang gawin ang mga parisukat-ilalim bags papel.