One pair of electrical brushes for Gramme dynamo
date: label: date made
content: ca 1880
name: label: associated person
content: Gramme
notes: label: Description (Brief)
content: A pair of brass and steel generator brushes. Each has two steel plates and one heavy brass plate connected with a rectangular brass cap. A piece of cloth tape is wrapped around the end of the longer steel plates. Prof. Rollins of Tufts recalled: "These are of real historic interest. They are the original brushes that belonged on the Gramme dynamometer [sic - almost certainly dynamo] which was the first commercial machine that the College ever had, and it is now in the Ford Museum in Dearborn, Michigan. When we gave them that machine we took these brushes off and put on carbon brushes instead." Handwritten on original box: "for dynamo now in Ford's Museum". Tag inside box reads: "Reg. B 37.41 5 1/4 Set of tinned copper bars. DR 2".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Tufts University, Departments of Electrical Engineering and Physics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.328095
label: catalog number
content: 328095
label: accession number
content: 270107
objectType: label: Object Name
content: Bushes, Pair of
label: Object Name
content: electric motor brushes
label: Object Name
content: motor brushes
label: Other Terms
content: Bushes, Pair of; Motors and Generators
physicalDescription: label: Measurements
content: overall: 1 in x 2 in x 5 in; 2.54 cm x 5.08 cm x 12.7 cm