wall telephone using a Blake transmitter, 1880-1890

Made:
1880-1890 in United Kingdom
Wall telephone using a Blake transmitter, c. 1885. General view on light brown wood grain background. From a colour

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Wall telephone using a Blake transmitter, c. 1885. General view on light brown wood grain background. From a colour
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Wall telephone with Blake transmitter, made by the United Telephone Company, 1880-1890.

This telephone uses a Blake carbon transmitter, designed and patented by Francis Blake (1850-1913) in 1877. It used a platinum contact with a button of carbon to transmit speech, and was found to be more sensitive that earlier transmitter designed used in telephones. Blake was eventually hired by Alexander Graham Bell (1847-1922) and, along with Emile Berliner (1851-1929), designed the Berliner Blake microphone, which was the standard at Bell Telephones for many years.

Details

Category:
Telecommunications
Object Number:
1913-647
Materials:
metal (unknown), plastic (unidentified), textile and wood (unidentified)
Measurements:
main boxes: 280 mm x 301 mm x 78 mm,
handset: 95 mm x 68 mm diameter
type:
telephone
taxonomy:
  • component - object