By 1827, Pratt was a successful architect and builder recognized as a leader in his trade in the American South. While in Georgia, he met Samuel Griswold, another New Englander, who manufactured cotton gins. He had Pratt manage his factory and within a year Pratt was promoted to partner. Pratt urged Griswold to expand the business in Alabama. Griswold agreed to the venture at first, but later decided against it due to conflicts there between settlers and Native Americans.
Pratt decided to go it alone, and moved to central Alabama in 1833 with his wife, two slaves, and enough materials to construct 50 gins. He relocated to an area known as McNeil's Mill and leased land along a creek in Autauga County in 1836, where he began manufacturing cotton gins. He moved further up the creek, bought 1,822 acres (737 ha), and built a permanent cotton gin factory in 1838. He founded the new town of Prattville for the workers in his venture. This operation quickly became the largest producer of cotton gins in the world, and Alabama's first major industry.
Much credit is given Pratt's efforts for easing Alabama's economic recovery during the Reconstruction period following the Civil War. His ability to call in debts on Northern accounts allowed him to rebuild his own operations, which helped make Autauga County exceptionally stable and prosperous in the period immediately after the Civil War. He was instrumental in opening and developing the Birmingham District as an iron-making center.
One of Pratt's slaves, Charles Atwood, purchased a house in the center of Prattville immediately after emancipation and became one of the founding investors in his former master's railroad ventures.
References
Tarrant, Mrs. S. F. H., editor, Hon. Daniel Pratt: A Biography, with Eulogies on His Life and Character.. (1904). Published by Whitter& Shepperson, Richmond, Va.
McMillan, M. C., Daniel Pratt: Antebellum Southern Industrialist (n.d.)
Miller and Evans, eds., The World of Daniel Pratt. Papers from a Symposium sponsored by the Autauga County Heritage Association. (February 1999)