Edison "Stopper" lamp
date: label: Date made
content: 1881
name: label: maker
content: Edison, Thomas Alva
notes: label: Description (Brief)
content: A model to accompany the application for US Patent #239373, "Electric Lamp," filed 7 August 1880, issued 29 March 1881 to Thomas A. Edison. A hard rubber base-collar, single-arch bamboo filament with two-piece leads, platinum-clamps. Tipped, G-shaped envelope with neck.
label: Description (Brief)
content: Reference: Francis Jehl, "Menlo Park Reminiscences," volume 2, page 606. The rubber cup was filled with mercury "or some other suitable fluid" that sealed the lamp after it was evacuated. The lamp could then be disassembled to renew the filament. The lamp was a conceptual forerunner of the Westinghouse "Stopper Lamp' of 1892.
label: Description (Brief)
content: Thomas Edison and his team at Menlo Park, NJ, demonstrated a commercially-practical incandescent lighting system in December 1879. However, their work did not stop there and they continued to improve and refine the system, although Edison never put this lamp design into production.
setName: label: See more items in
content: Work and Industry: Electricity
label: See more items in
content: Energy & Power
label: Exhibition
content: Inventing In America
label: Exhibition Location
content: National Museum of American History
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.252624
label: catalog number
content: 252624
label: accession number
content: 49064
objectType: label: Object Name
content: Incandescent Electric Lamp
label: Object Name
content: incandescent lamp
label: Object Type
content: Patent Model
label: Other Terms
content: Incandescent Electric Lamp; Lighting Devices; Horseshoe; Metal
physicalDescription: label: Measurements
content: overall: 22 cm x 7 cm; 8 21/32 in x 2 3/4 in