Cardwell variable capacitor
date: label: date made
content: ca 1928
name: label: maker
content: Cardwell Condenser Corp.
notes: label: Description (Brief)
content: Marked: "KS 6719 / Cardwell / U.S. Patent 1626391 / Made in U.S.A." This unit is a high frequency "butterfly" capacitor with a fixed central stator place and two variable rotor plates on either side. Binding posts for stator on either side of frame, for rotor on back of frame. US Patent 1626391, "Variable Air Condenser," issued to Allen D. Cardwell, 26 April 1927.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.321715
label: catalog number
content: 321715
label: accession number
content: 241556
objectType: label: Object Name
content: capacitor
label: Object Name
content: variable condenser
physicalDescription: label: Measurements
content: overall: 2 3/8 in x 4 1/2 in x 3 3/4 in; 6.0325 cm x 11.43 cm x 9.525 cm