Patent model, Gray electro-harmonic telegraph, US Patent #173,618

front - cover closed
front - close-up of plate
front - cover open
front - close-up keys/coils
right
back
left
bottom
bottom - closeup
top - open closeup
top - keys closeup
top - coils closeup
top - open
parts

Date Made: 1876Date Made: 1875

Associated Person: Gray, ElishaMaker: Elisha Gray

Location: Currently not on view

See more items in: Work and Industry: Electricity

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: EM.308867Catalog Number: 308867Accession Number: 89797Patent Number: 173618

Object Name: Harmonic telegraphtelegraph transmitterOther Terms: Harmonic telegraph; Telegraphy

Measurements: overall: 7 in x 12 in x 12 1/2 in; 17.78 cm x 30.48 cm x 31.75 cm

Metadata Usage: CC0

Guid: http://n2t.net/ark:/65665/ng49ca746a5-2822-704b-e053-15f76fa0b4fa

Record Id: nmah_703475

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.