Steam Sugar Apparatus
By Norbert Rillieux
Patent granted 1843
Ink and watercolor on paper
18" x 25 1/4"
National Archives and Records Administration, Records of the Patent and
Trademark Office
Rillieux's Steam Sugar Apparatus,
Patent Drawing
Here are two of several patent drawings that Norbert
Rillieux, an African American inventor from New Orleans, Louisiana, sent
to the Patent Office. He invented an improved method for evaporating and
concentrating juices and syrups during the manufacture of sugar. These
are two of more than 100,000 utility or invention patent drawings held
at College Park, Maryland, by the Special Media Services Division of the
National Archives and Records Administration.