Stolz Electrophone Carbon Hearing Aid
The Stolz Electrophone carbon hearing aid was manufactured by the Stolz Electrophone Co of Chicago, IL beginning in 1909.
The complete hearing aid including battery weighed 12.4 oz.
Included with this carbon hearing aid were some instructions on how
to use it. There were two
notices
and detailed
instructions on how to use it.
These instructions also show how to use the sound magnifier (missing)
on the microphone to better capture sounds.
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Front view of the Stoltz Electrophone microphone. The inscription around
the mic reads "The Stoltz Electrophone" and "Chicago, U. S. A." This
hearing aid had no volume control. Note that carbon microphones did
not work when laying down. You had to keep the vertical. |
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Rear view of the back of the Stolz Electrophone carbon microphone. The
microphone is 2½" in diameter and 13/16" thick.
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Front view of the Stolz Electrophone earphone. The earphone measured
2⅛" in diameter and ¾" thick. |
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Side view of the Stolz Electrophone showing the on-off switch. Note
the hole near the bottom right side. There is a corresponding hole on
the other side. The headband (missing) snapped into these holes.
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Rear view of the Stolz Electrophone earphone.
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The Stolz Electrophone carbon hearing aid had a uncommon way of
attaching the microphone wires to the battery terminals. There were two
sized holes in the pins so you couldn't put them on the wrong terminals. |
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The
3-volt
carbon-zinc battery used by the Stoltz Electrophone carbon
hearing aid. There is no name on the battery to identify the
manufacturer.
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The Stolz Electrophone in its carrying case. |
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Instructions on the inside of the lid of the Stolz Electrophone carrying case.
Read the pdf
version here if the print is too small in the pictures. |
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Top view of the center of the Stolz Electrophone carrying case showing
the model and manufacturer.
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The carrying case for the Stoltz Electrophone carbon hearing
aid. The carrying case measures
7⅝" wide x 3 5/16" deep x 3⅜" high.
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