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.

 

Ear Trumpets (Ear Horns)

Rochhausen Model 40 Ear Trumpet (Ear Horn)

The Rochhausen Model 40 ear trumpet was made by Horgerate-Akustik Rochhausen of Waldkirchen, Germany in 1948.

This ear trumpet was made of an early black plastic. It measured 14½" (21.5 cm) in length when extended and 8½"  (37.5 cm) when collapsed. The bell end measured 3 11/16" (9.4 cm) in diameter. It weighed 6.5 oz. (184 g).

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The grill of the Rochhausen Model 40 ear trumpet is distinctive and makes it easy to identify.

 


 

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Rear view of the Rochhausen Model 40 ear trumpet in its extended position.

 


 

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Side view of the Rochhausen Model 40 ear trumpet in its extended position showing the curve of the bell.

 


 

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View of the Rochhausen Model 40 ear trumpet when collapsed for carrying or storage. The ear tip piece can actually disappear right into the bell piece.

 


 

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Close-up view of the joint between the two pieces of the Rochhausen Model 40 ear trumpet. Shown here when the ear trumpet is extended.

Pushing the two pieces together a bit allows the ear tip end to rotate so you can use the ear trumpet in either ear.


 

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Close-up view of the joint between the two pieces of the Rochhausen Model 40 ear trumpet when collapsed.

 


 

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Close-up of the ear tip. It is made of cream-colored plastic. It screwed onto the end of the plastic tube.

 


 

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Close-up view of the end of the ear tip showing the larger than normal hole for the sound to come through.

Note that the ear piece is cracked. This seems to be fairly common—probably from screwing the tip on too tightly and cracking it in the process.


 

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A ribbon lanyard attached to the loop near the end of the ear tip. When not actively using this ear trumpet, it just hung around your neck ready for instant use when needed.

 


 

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Close-up of the rim of the bell. Stamped into it is the manufacturer's name—"Rochhausen".

 


 

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Another close-up view of the rim of the bell showing the manufacturer's mark—a triangle with the numbers 616 below it.

To the left is the word "Rochhausen" as shown above. To the right is the word "Waldkirchen" (shown below).
 

 

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Close-up of the rim of the bell. To the left of the triangle is stamped the word "Waldkirchen", the place of manufacturer of this ear trumpet.
 

 


 

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Close-up view of the opposite edge of the rim of the bell showing the model number, "Modell 40".

 

 

 


 

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