Patent Model of a Machine for Coating Electrotype Molds with Plumbago
date: label: date made
content: ca 1868
label: patent date
content: 1868-12-29
name: label: maker
content: Tucker, Stephen D.
notes: label: Description (Brief)
content: This patent model demonstrates an invention for a machine for coating electrotype; the invention was granted patent number 85411. The patent details a machine for brushing black lead (plumbago, graphite) or bronze powder onto either wax or gutta percha molds, in order to give them conducting surfaces. Stephen Tucker was an employee and, from I860, a partner with R. Hoe & Co. He was responsible for numerous patents for the company, and was the author of the company history, "A History of R. Hoe & Company, 1834- 1885.”
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Graphic Arts
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content: Patent Models, Graphic Arts
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content: Work
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content: Communications
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content: Industry & Manufacturing
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content: Patent Models
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: GA.89797.085411
label: patent number
content: 085411
label: accession number
content: 089797
label: catalog number
content: GA*89797.085411
objectType: label: Object Name
content: machine, electrotype coating
label: Object Name
content: Machine, Plumbago
label: Object Type
content: Patent Model
label: Other Terms
content: Machine, Plumbago; Plate making; Electrotyping
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 24.8 cm x 16.8 cm x 27.8 cm; 9 3/4 in x 6 5/8 in x 10 15/16 in