Benjamin Montgomery was born into slavery in 1819 in Loudon County, Virginia. He was sold to Joseph E. Davis, a Mississippi planter. Davis was the older brother of Jefferson Davis who would later serve as the President of the Confederate States of America. After a period time, Davis could see great talent within Montgomery and assigned to him the responsibility of running his general store on the Davis Bend plantation. Montgomery, who by this time had learned to read and write (he was taught by the Davis children), excelled at running the store and served both white customers and slaves who could trade poultry and other items in return for dry goods. Impressed with his knowledge and abilities to run the store, Davis placed Montgomery in charge of overseeing the entirety of his purchasing and shipping operations on the plantation.

In addition to being able to read and write, Montgomery also learned a number of other difficult tasks, including land surveying, techniques for flood control and the drafting of architectural plans. He was also a skilled mechanic and a born inventor. At the time commerce often flowed through the rivers connecting counties and states. With differences in the depths of water in different spots throughout the river, navigation could become difficult. If a steamboat were to run adrift, the merchandise would be delayed for days, if not weeks.

Montgomery decided to address the problem and created a propellor that could cut into the water at different angles, thus allowing the boat to navigate more easily though shallow water. Joseph Davis attempted to patent the device but the patent was denied on June 10, 1858, on the basis that Ben, as a slave, was not a citizen of the United States, and thus could not apply for a patent in his name. Later, both Joseph and Jefferson Davis attempted to patent the device in their names but were denied because they were not the “true inventor.” Ironically, when Jefferson