Name/Title
Lewis H. Latimer Patent – Process of Manufacturing Carbons (No. 252,386), January 17, 1882Description
This 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.Context
Lewis H. Latimer was an African American inventor and engineer who contributed to the development of practical incandescent light bulbs. This patent specifically relates to his improvements in producing carbon filaments to increase the efficiency and longevity of electric lamps.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"