Gramme and D'Ivernois generator, US Patent #120,057
date: label: Date made
content: 1871
name: label: maker
content: Gramme, Zenobe T.
label: maker
content: D'Ivernois, Eardley Louis Charles
notes: label: Description (Brief)
content: A model to accompany the application for US Patent 120057, "Improvement in Magneto-electric Machines," issued 17 October 1871 to Zenobe Gramme and Eardley D'Ivernois. A wooden base on which is mounted a wooden assembly consisting of a 3-plate laminated horseshoe magnet, a Gramme type armature, rolling wheel commutators, and two brass binding posts. A small pulley on the armature shaft is connected to a larger pulley by braided cord. The larger pulley was turned by a handle (missing) to demonstrate the action of the machine.
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.308570
label: catalog number
content: 308570
label: accession number
content: 89797
label: patent number
content: 120057
objectType: label: Object Name
content: Generator
label: Other Terms
content: Magneto Machine; Generator; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 7 in x 4 5/8 in x 9 7/8 in; 17.78 cm x 11.7475 cm x 25.0825 cm