Benjamin Montgomery (1819 – 1877) – Shallow water steam propeller
Benjamin Montgomery’s story is similar to that of Benjamin Boardley, as both were born into slavery and taught to read and write by their owners’ children. Later on, they became inventors in the field of ship propulsion systems. While Boardley invented a steam engine for ships, Montgomery developed an adjustable propeller that could be operated at different angles, allowing boats to navigate shallow waters.
Montgomery was a skilled laborer who his master entrusted with the shipping operation of the plantation. He also had the opportunity to learn about drafting and land surveying. Despite being unable to file a patent for his propeller design due to his “slave” status, Montgomery was determined to commercialize it. His master, Joseph Davis, attempted to file the patent but was denied as he was not the inventor. Davis, however, allowed his slaves to keep the money they earned commercially from the operations.
Montgomery eventually accumulated enough wealth to purchase his master’s plantation as part of a long-term loan deal. He became the first African American to own and operate a plantation in Mississippi, where he implemented progressive agricultural practices, including crop rotation and diversification. Montgomery’s innovative spirit and entrepreneurialism inspired many, and he left a lasting legacy in the fields of agriculture and invention.
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