Catalogit it- Entry-Detail - Aisha Abdul Rahman, MLIS, PhD. Archivist, Genealogist & Heritage Traveler

Lewis H. Latimer Patent – Process of Manufacturing Carbons (No. 252,386), January 17, 1882

Drawing

DescriptionThis is a patent document for Lewis H. Latimer’s invention, titled "Process of Manufacturing Carbons," with patent number 252,386, granted on January 17, 1882. The patent features technical drawings illustrating the manufacturing process for carbon filaments, which were a crucial component in early incandescent light bulbs. The document includes Latimer's signature and that of witnesses, as well as detailed figures (technical diagrams) showing different views of the process.

Lewis H. Latimer Patent – Process of Manufacturing Carbons (No. 252,386), January 17, 1882 picture number 1

Context

Lewis H. Latimer was an African American inventor and engineer whose contributions to electric lighting were instrumental in the development of practical incandescent light bulbs. This patent specifically relates to his improvements in producing carbon filaments, which significantly increased the efficiency and longevity of electric lamps. His work helped commercialize Edison's light bulb and contributed to the broader adoption of electric lighting.

Collection

Latimer Family Papers (1870-1996 ) [QPL Full Collection]

Inscription/Signature/Marks

Transcription

Header: "(No Model.) L. H. LATIMER. PROCESS OF MANUFACTURING CARBONS. No. 252,386. Patented Jan. 17, 1882." Technical Drawings Labels: "Fig. 1" (Depicts a component of the carbon manufacturing process) "Fig. 2" (Detailed sectional view of the process) "Fig. 3" (Cross-section with additional details) Signatures: "Inventor, Lewis H. Latimer" "By Parker & Page, Attys" "Witnesses: A.R. Ransom"