model for Maxim dynamo electric machine, patent #233,942
date: label: Date made
content: ca 1880
name: label: maker
content: Maxim, Hiram S.
notes: label: Description (Brief)
content: A direct current generator patent model. US Patent 233942, Dynamo Electric Machine, issued 2 November 1880 to Hiram S. Maxim. Claims: Improvement of ventilation within the armature to reduce heating; easily replaceable commutator. Machine has two flat field coils at top and bottom, painted red. Large armature wound with blue wire rotates in the field. Pulley is attached to one end of the armature shaft, commutator with brushes at the other end. Schroeder, History of the Electric Light, page 41.
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.252657
label: accession number
content: 49064
label: catalog number
content: 252657
objectType: label: Object Name
content: electrical generator
label: Object Name
content: generator
physicalDescription: label: Measurements
content: overall: 12 1/4 in x 6 in x 12 1/4 in; 31.115 cm x 15.24 cm x 31.115 cm