Patent Diagram – Thomas Edison’s Electric Lamp
Publication
T. A. EDISON Electric Lamp Patent Number & Date: No. 223,898 Patented Jan. 27, 1880 Diagram Details:
Fig. 1: A side view of the electric lamp, showing the filament structure.
Fig. 2: A frontal view of the bulb with internal filament and support structures.
Fig. 3: A smaller schematic of the internal wiring and filament attachment.
This is a copy of Thomas Edison’s crucial patent of 1880—the one that paved the way for the widespread development of incandescent lighting. This photocopy may have been acquired by Winifred Norman, Lewis Latimer’s granddaughter, as she researched her grandfather’s life and career.
Latimer Family Papers (1870-1996 ) [QPL Full Collection]
Inventor: Thomas A. Edison Filed by: Lemuel W. Serrell (Patent Attorney) Witnesses: A. G. Howell, Geo. Trowbridge