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!

Home Enter the Museum About Us Contact Us

FREE Subscription to:
Hearing Loss Help
The premier e-zine for people with hearing loss

Your email address
will never be
rented, traded or sold!

Your First Name:
Your E-mail:
Search this site:

 Results per
 page

 all words
 any words


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

 

Vacuum Tube Hearing Aids: 1921-1953

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

 

Next

 
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)