John and Miles O’Brien are two of a few South Bend, Ind., business founders whose product is still being manufactured in the United States. John and Miles, born in Ireland in 1868, were identical twins whose family immigrated to the U.S., settling in Connecticut in the 1870s. At the age of 35, they went into business for themselves in a one-room building at the corner of West Washington and Johnson streets in South Bend. They began manufacturing lathes, at the time the most vital machine for any industry using metal or steel parts.