Charles Baker was a notable American inventor born into slavery on August 3, 1859, in Savannah, Missouri.
Charles Baker was a notable American inventor born into slavery on August 3, 1859, in Savannah, Missouri. After losing his mother, Betsy Mackay, when he was just three months old, Baker was raised by his owner's wife, Sallie Mackay, and his father, Abraham Baker. He was the youngest of five children, including Susie, Peter, Annie, and Ellen, who were all freed following the Civil War. Baker later pursued education at Franklin College and worked as an assistant to his father, an express agent. This exposure to mechanical work with wagons and linchpins sparked Baker's interest in mechanical sciences. Baker dedicated over two decades to developing his invention: a friction heater. He experimented with various friction methods, including rubbing bricks together and using different metals. After twenty-three years, his invention took shape as a device featuring two metal cylinders, one inside the other, with a wooden spinning core in the center that generated friction. In 1904, Bak