Archives du mot-clé Thomas Elkins

African-American inventor, Thomas Elkins

In 1891 African-American inventor John Standard of Newark was awarded U. S. patent number 455,891 for an improved refrigerator design. A non-electrical unit, Standard’s refrigerator featured a manually filled ice chamber for chilling stored foods and beverages. The first-known system for artificial refrigeration was designed and presented by William Cullen at the University of Glasgow in 1784. Another African-American inventor, Thomas Elkins, also patented an improvement on this original refrigeration device on November 4, 1879