Fitler became a partner in Weaver's business two years later, and it was renamed Weaver, Fitler & Company. Displaying an aptitude for mechanics, Fitler developed several inventions to improve and speed up rope making, which made the business more profitable. Over time Fitler bought out the other partners in Weaver, Fitler & Company, and by 1870 the business was renamed again to Edwin H. Fitler & Company. He relocated the factory to the
Bridesburg neighborhood of Philadelphia where it covered more than 15 acres of land. Fitler was also active in other businesses, including as a member of the board of directors of the National Bank of the Northern Liberties. Fitler also served as president of the board of trustees of the
Thomas Jefferson Medical College, a member of the board of managers of the
Edwin Forrest Home, and a member of the board of directors of the
North Pennsylvania Railroad. ==Civic activism==