Patent Model of a Machine for Coating Electrotype Molds with Plumbago

Description (Brief):

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.”

Date Made: ca 1868Patent Date: 1868-12-29

Maker: Tucker, Stephen D.

Location: Currently not on view

See more items in: Work and Industry: Graphic Arts, Patent Models, Graphic Arts, Work, Communications, Industry & Manufacturing, Patent Models

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: GA.89797.085411Patent Number: 085411Accession Number: 089797Catalog Number: GA*89797.085411

Object Name: machine, electrotype coatingMachine, PlumbagoObject Type: Patent ModelOther Terms: Machine, Plumbago; Plate making; Electrotyping

Physical Description: metal (overall material)wood (overall material)Measurements: 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

Guid: http://n2t.net/ark:/65665/ng49ca746a8-8f90-704b-e053-15f76fa0b4fa

Record Id: nmah_998753

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