Mary Walton was an American born independent inventor who worked in the late 19th century. Mary Walton in 1879 created a method for reducing the environmental hazards of the smoke emitted from factory smoke stacks. Walton's system, (U.S. patent #221,880) deflected the emissions being produced into water tanks, where the pollutants were retained and then flushed into the city sewage system.
Tabitha Babbitt - Mary Walton - Stephanie Kwolek - Patsy O. Sherman
Bessie Nesmith - Ann Moore - Mary Anderson