09/14/2022
Learn about Lewis Latimer
LATIMER
Lewis Latimer (1848-1928) was an African-American inventor, electrical pioneer and patent expert.
After 11 years working as a patent lawyer for inventors such as Alexander Graham Bell (working on the telephone) and Hiram Maxim (in his United States Electric Lighting Company), Latimer started to work with Edison General Electric in the late 1880s as a patent expert (see from the five minute-mark in the video lewislatimerhouse.org/about/ ).
In 1890 he published a book on the Edison system and the development of the incandescent light by Edison, called “Incandescent Electric Lighting: A Practical Description of the Edison System” ( here ).
The website for the museum based in his old house says Latimer “invented the carbon filament, a significant improvement in the production of the incandescent light bulb” ( lewislatimerhouse.org/about/ ).
The website for Lemelson-MIT, which awards prizes to inventors in the United States, goes into more detail, saying: “Edison’s light bulb used a carbonized bamboo filament, which unfortunately burnt out rather quickly. Latimer created a way to make the carbon filament more durable by encasing it in cardboard.” (here)
Latimer filed a patent for the process for efficiently manufacturing the carbon filament in September 1881. The patent can be seen here here . Edison’s patent for his lightbulb, seen here , was granted around one and a half years earlier in January 1880 ( here ).
Latimer also supervised the installation of public electric lights throughout New York, Philadelphia, Montreal and London (see here and here ). His other patented inventions included the first toilet for railroad cars and a forerunner of the air conditioner ( here ).
Lewis Howard Latimer (1848-1928) was an African-American inventor, electrical pioneer, and a son of fugitive slaves. With no access to formal education, Latimer taught himself mechanical drawing while in the Union Navy, and eventually became a chief draftsman, patent expert, and inventor.