Imperial Bryan-Marsh incandescent lamp
date: label: date made
content: ca 1900
notes: label: Description (Brief)
content: Imperial Bryan-Marsh incandescent lamp, ca 1900. Brass medium-screw base with retainer and porcelain insulator. Two single-arch carbon filaments in series with center connector, carbon paste connectors, two-piece leads. Tipped, pear-shaped envelope. Two manufacturer labels are side-by-side on this unit. #1 reads: "Imperial B.M. Co. 110 Volts 16 C.P."; #2 reads: "Imperial B.M. Co. 3.1 watt" with "43.130" overwritten. "20:" inked on stem.
setName: label: See more items in
content: Work and Industry: Electricity
label: Exhibition
content: Lighting a Revolution
label: Exhibition Location
content: National Museum of American History
creditLine: label: Credit Line
content: from the Museum of Science and Industry (Chicago)
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.327799
label: accession number
content: 271855
label: catalog number
content: 327799
objectType: label: Object Name
content: Light Bulb
label: Object Name
content: incandescent lamp
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: carbon (overall material)
label: Measurements
content: overall: 5 in x 2 3/8 in; 12.7 cm x 6.0325 cm