# Lewis Howard Latimer

*Patent draftsman, inventor, and the Black engineer whose work made electric light practical*

> Black's Encyclopedia — the sourced record of Black American life.
> Portal: Science & Invention · Status: In review · Revised: July 24, 2026 · Revisions: 1
> Canonical: https://www.blacksencyclopedia.com/record/lewis-howard-latimer-fa1e

## Questions this record answers

- Did a Black man invent the light bulb?
- What did Lewis Howard Latimer actually invent?
- Why is Latimer’s name missing from popular stories of electric light?

## Summary

Lewis Howard Latimer did not invent the light bulb, but he helped make electric light practical by improving the carbon filament and by drafting and securing patents for major electrical inventions. His work belongs at the center of the story of modern lighting, not at its margins.

## The archive's standing

Latimer stands as one of the essential Black engineers of the electrical age. The archive holds him as an author of practical innovation: a man whose technical skill shaped how electricity entered daily life. The public record has often flattened him into a supporting character, but the deeper record shows a builder of infrastructure and a bridge between invention and mass use.

## What he built

Latimer worked in the electrical industry as a draftsman, inventor, and technical specialist. His best-known contribution was an improved carbon filament for incandescent lamps, which helped extend bulb life and make electric lighting more usable in practice.

## Why the popular story is incomplete

The common story centers white inventors and treats Latimer as secondary. That account misses the patent-drafting labor, technical refinement, and industrial knowledge that made electric light workable at scale. The archive treats that omission as a problem of credit, not of achievement.

## Why his record matters

Latimer’s significance is not limited to one device. He represents Black authorship inside the making of modern electrical systems, including the unseen labor of drawing, specifying, testing, and translating invention into a form companies could manufacture. That is invention in the full sense of the word.

## The record and the limit

The historical record is strongest on Latimer’s patent work, his engineering employment, and his carbon-filament improvement. It is weaker, and often distorted, where popular retellings try to collapse his role into a footnote. The archive keeps the claim precise: he did not invent the light bulb, but he materially improved the technology that made it practical.

## Sources

1. Lewis Howard Latimer patent 252,386, ‘Incandes­cent Electric Lamp,’ United States Patent and Trademark Office, January 10, 1882.
2. Philip S. Foner and Ronald L. Lewis, Black Inventors, 1st ed., M.W. 1976.
3. Susan V. F. Malin, ‘Lewis Howard Latimer,’ in Encyclopedia of African American History, 1896 to the Present, ed. Paul Finkelman, Oxford University Press, 2009.

## Related records

- https://www.blacksencyclopedia.com/record/light-bulb
- https://www.blacksencyclopedia.com/record/lewis-howard-latimer-and-the-carbon-filament-that-made-electric-light-practical
- https://www.blacksencyclopedia.com/record/granville-t-woods
- https://www.blacksencyclopedia.com/record/automatic-elevator
- https://www.blacksencyclopedia.com/record/traffic-light

---

Cite as: Black's Encyclopedia, "Lewis Howard Latimer," revised July 24, 2026. https://www.blacksencyclopedia.com/record/lewis-howard-latimer-fa1e

Text under the Black's Record License: cite the record, keep attribution attached, cite the revision date.