Page and Dal Negro motor with Geissler tube
date: label: Date made
content: c1833
label: date made
content: ca 1833
notes: label: Description (Brief)
content: Small Page and Dal Negro direct current motor with mounting for a geissler tube on the armature. Tube included. A straight tube with two electrode chambers, two spheres and no external envelope. Unit mounted on wooden base. Tag: "5h-25". "578" written under base. Field is provided by pair of electromagnets with axis horizontal. Armature is iron bar on brass flywheel. Commutator is actuated by cam on axis of the flywheel with connections for rotating geissler tube. No extant maker's marks. Reference: Groenendijk Catalog, page 20, item 5h-25.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315531
label: catalog number
content: 315531
label: collector/donor number
content: 5h-25
label: accession number
content: 216300
objectType: label: Object Name
content: Motor
label: Object Name
content: geissler tube
label: Object Name
content: motor
label: Object Name
content: electric motor
label: Other Terms
content: Motor; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 4 in x 5 1/2 in x 4 in; 10.16 cm x 13.97 cm x 10.16 cm
label: Measurements
content: tube: 5 1/2 in x 3/4 in; x 13.97 cm x 1.905 cm