Edison "Johnson Bevel-ring" lamp base.
date: label: date made
content: ca 1881
name: label: maker
content: Edison Electric Light Company
notes: label: Description (Brief)
content: Edison bamboo filament incandescent lamp base, ca. 1882. Plaster "Johnson bevel-ring" base with brass medium-screw shell and contact. Lower leads, cork insulator and glass shard are in the base. When originally collected this unit was intact, described as an Edison lamp, with horseshoe-shaped filament, no patent label, with screw base having oversize collar on top of base. One connection on bottom of base and one on bottom of oversize collar. The base was located in a Johnson bevel-ring socket, presumably the lamp was damaged during the move of the collections in the early 1960s.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: Gift of Hilda P. Munroe
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.314909
label: catalog number
content: 314909
label: accession number
content: 212171
objectType: label: Object Name
content: Light Bulb Base
label: Object Name
content: incandescent lamp
label: Object Name
content: incandescent lamp component
physicalDescription: label: Physical Description
content: plaster (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 1 in x 1 1/2 in; 2.54 cm x 3.81 cm