experimental tipless carbon lamp
date: label: date made
content: ca 1882
notes: label: Description (Brief)
content: Experimental tipless carbon lamp, circa 1882. No base. Single-arch bamboo filaments, with carbon paste connectors, two-piece leads (?), two glass-bead insulator / lead-supports in each lamp. Pear-shaped envelopes. Specific differences: Lower glass-bead insulator is elongated into a rod and spans the diameter if the lamp at that point. Lead-wire extensions are attached to each lead wire as they emerge from the sides of the envelope and are wrapped around the lamp (Note that the lead wires exit thru opposite sides of the lamp-neck and are formed into loops). Bottom tipped design.
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.314911.01
label: catalog number
content: 314911.01
label: accession number
content: 212171
objectType: label: Object Name
content: Light Bulb
label: Object Name
content: incandescent lamp
physicalDescription: label: Physical Description
content: carbon (overall material)
label: Measurements
content: overall: 6 in x 2 1/8 in; 15.24 cm x 5.3975 cm