Black History:  Special Delivery!!


Station and Street  Indicator


Thomas W. Stewart (1823 – ) was born in Kalamazoo, MI.  He is perhaps, best known for making design improvements to the mop.  In 1893, Stewart invented a new mop that had a clamp and springs which allowed the user to press a lever that would wring out the excess water in the mop.  He also designed the mop head to be detachable, making it easier to clean and replace.

Stewart also received a patent in 1883 for a station and street indicator.  Prior to his invention, there were only street signs that were used to provide warnings at train crossings.  Stewart’s invention worked by activating a lever that was built into the train tracks that indicated a train was coming.

Stewart also invented a metal binding machine in 1893.  The machine also had the capability of oscillating; making the process of bending steel safer and more efficient.