US Patent: 174,465
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| Improvement in telegraphy
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Patentee:
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| Alexander Graham Bell (exact or similar names) - Salem, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 14, 1876 |
| Granted: |
Mar. 07, 1876 |
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Jeff Joslin
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Description: |
| This is Alexander Graham Bell's famous telephone patent. Unless read very closely, it does not seem to have anything to do with transmitting voice, but rather transmitting multiple telegraph signals simultaneously over a single pair of wires. It is not until the second-last page that the cat is let out of the bag: "One of the ways in which the armature c, Fig. 4, may be set in vibration has been stated above to be by wind. Another mode is shown in Fig. 7, whereby motion can be imparted to the armature by the human voice or by means of a musical instrument." Bell was not even aware that his research sponsor, Gardiner Greene Hubbard, had applied for this patent, and at the time the patent was issued Bell had not actually succeeded in demonstrating a telephone. His famous "Mr. Watson, come here" event occurred three days after this patent was issued. The transmitter he was using was an acid-water transmitter of a type arguably devised first by Elisha Gray, who had filed for a telephone patent on the same day as Bell's application. |
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