Owners of the General Equipment company opened the restaurant chain Burger Chef, intending to promote their equipment they instead sky-rocketed themselves into owning the second largest burger chain in America. Frank P. Thomas Jr., Donald J. Thomas, and Robert E. Wildman, owners of the General Equipment Company, entered into the fast-food business by opening a 15¢ hamburger restaurant called Burger Chef in Indianapolis in 1958. General Equipment was a manufacturer of restaurant machinery and built the equipment installed in each Burger Chef store. The partners started their new Burger Chef division to sell more equipment; they never could have imagined that Burger Chef would eventually grow to become the nation's second-largest hamburger chain and beloved by customers in towns and cities across America. Burger Chef continued in business until 1982, cooking its popular flame-broiled hamburgers and introducing its memorable advertising icons, Burger Chef and Jeff.