Wall telephone using a Blake transmitter, 1880-1890
- Made:
- 1880-1890 in United Kingdom
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LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseWall telephone with Blake transmitter
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Wall telephone with Blake transmitter
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Wall telephone with Blake transmitter
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Wall telephone with Blake transmitter
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Wall telephone using a Blake transmitter, c. 1885
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:
- wood (unidentified), plastic (unidentified), metal (unknown) and textile
- Measurements:
-
overall: 2.22 kg
main boxes: 280 mm x 301 mm x 78 mm,
handset: 95 mm x 68 mm diameter
- type:
- telephone
- credit:
- Purchased from J.C. Stevens Auction House
