Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.

 

Carbon Hearing Aids: 1900-1939

Teutonophone 2 Carbon Hearing Aid

Teutonophone did not give model numbers to their hearing aids so I have put the number "2" on this one to distinguish if from the other two in the museum.

Teutonophone, Inc. (established in New York city in 1929) likely produced this carbon hearing aid somewhere between 1932 and 1936.

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Front view of the Teutonophone "2" carbon microphone. This microphone grill consisted of 3 concentric circles and a hole in the center. The outside half was smooth. The microphone is 2½" (6.4 cm)  in diameter and ⅝" (1.6 cm)  thick.


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The picture at the right shows the back of the Teutonophone "2" carbon microphone. A 5-step volume control was built onto the back of the microphone.


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Close-up of the back of the Teutonophone "2" microphone showing the inscriptions—"Teutonophone", then "Reg. U.S. Pat. Office" then "Germany". Likely this Teutonophone microphone was made in Germany and the parts to build the hearing aid assembled in the U. S.

 

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Bottom side view of the Teutonophone "2" microphone showing the two sockets for connecting to the battery cable "pins".

 

 

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Bottom side view of the Teutonophone "2" microphone showing the two battery cable "pins" plugged in.

 

 

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The plug on the opposite end of the battery cable cord. This either plugged into a carbon amplifier or directly into the top of the battery similar to the Fortiphone 3-S although the pin spacing is closer-set by about 1/32" but enough to prevent the plug fitting into the battery sockets.

 

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The two plugs to plug the earphone to the microphone. The plug on the left is from the microphone. Notice the on/off slider switch on the top of the plug (left side) on the end of the earphone cord.

Unlike the plugs of today, each piece had one plug and one socket for the matching pin of the other piece.

 

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The two plugs looked like this when they were plugged together.

 

 

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Front view of the Teutonophone "2" earphone. The earphone was normally attached to a headband (missing).

The earphone was 2⅛" (5.4 cm) in diameter and ¾" (1.9 cm) thick.

 

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Rear view of the Teutonophone "2" earphone. The inscription reads, "Teutonophone" and below it, "Reg. U.S. Pat. Office".

 

 

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Bottom side view of the Teutonophone "2" earphone showing the sockets for the pins on the end of the earphone cord.

 

 


 

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