What specific contributions did Isaac Singer make to the sewing machine that helped it reach a broader market?

Answer

Refining the mechanism and adding a presser foot

While Elias Howe developed the effective lockstitch mechanism, Isaac Singer was instrumental in further refining the machine's design. His addition of the presser foot, combined with his savvy business practices and mechanical improvements, made the machines significantly more efficient and accessible to a wide variety of users, including household owners and large factories.

What specific contributions did Isaac Singer make to the sewing machine that helped it reach a broader market?
inventiontextilesewing machineMechanization