Fortiphone Model 20 "All-in-One" Vacuum Tube Hearing Aid
The Fortiphone Model 20 "All-in-One" vacuum tube hearing
aid was manufactured by Fortiphone Ltd. of London, England about 1951.
This 3-vacuum tube hearing aid was quite heavy, and weighed 8¼ oz. without batteries.
It measured 3⅞" x 2⅜" x ⅞".
|
 |
Click picture for larger view |
| |
|
| |
|
|
Top view of the Fortiphone Model 20 in its original case showing the
volume control (left), receiver cord plug (center) and on-off/3 position
tone control (right).
|
 |
Click picture for larger view |
| |
|
|
The back of the Fortiphone Model 20. The circle (lower center) is the
secret to gaining access to the battery compartment. By pushing the
circle in, it pushes the "A" battery into the front of the battery
door—popping it open.
|
 |
Click picture for larger view |
| |
|
|
Close-up of the upper back of the Fortiphone Model 20.
It reads:
"Fortiphone
All-in-One
Model 20
golden tone hearing"
|
 |
Click picture for larger view |
| |
|
|
The battery door on the Fortiphone Model 20 is a bit unusual in that it
in front-opening, and swings down exposing the battery compartment.
The "bar" above the pocket clip pushes in to lift the pocket clip away
from the hearing aid body so it can easily slide under the front of a
pocket.
|
 |
Click picture for larger view |
| |
|
|
The Fortiphone Model 20 battery compartment. The 1½ volt "A" battery
goes to the left and the larger 22½ volt "B" battery to the right.
This hearing aid took an AA sized "A" battery (same as the
Eveready 1015E) and an
Eveready 412E "B" battery, or a
Zenith Z-12-G "B" battery.
|
 |
Click picture for larger view |
| |
|
|
The Fortiphone Model 20 in its original case
|
 |
Click picture for larger view |
| |
|
|
The carrying case of the Fortiphone Model 20 hearing aid.
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
