General Information

Serial #

26958

Part Number

1

Total Parts

1

AKA

receiver

Patents

N/A

General Description

Bright silver metal case [nickel plated ?]; synthetic [celluloid ?] tab for lifting batteries from compartment; black synthetic trim; brown synthetic [?] battery compartment liner; red paper adhesive backed label fixed inside battery compartment.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

6.7 cm

Width

5.2 cm

Height

2.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Assistive technologies

Sub-Category

N/A

Manufacturer

AKA

MAICO

Country

United States of America

State/Province

Minnesota

City

Minneapolis

Context

Country

Canada

State/Province

Unknown

Period

This type of hearing aid used in 1950s.

Canada

Example of hearing aid worn in Canada in 1950s.

Function

To amplify tones for individual to hear.

Technical

Example of a hearing aid which could be clipped to the pocket, or elsewhere on the user's clothing. It is relatively small because it used the newly introduced transistor [c. 1952]. An earphone would be attached to this unit, by means if a fine cord/cable. In the history of hearing aids it follows the vacuum tube amplifiers and precedes the one-piece units which were small enough to be worn behind the ear. [Ref. 1]

Area Notes

Unknown

Details

Markings

"26958" printed on case edge. "O T M" printed above volume control dial. "Maico/ ELECTRONICS INC./ MPLS MINN" printed in black inside battery compartment cover. "Maico/ [right facing directional arrow]/+/ LOW/CUT/ [graphic]/ TONE/ NORMAL/ POWER/ [graphics]/ +/ [left facing arrow]/ INSERT NEGATIVE/ END FIRST" printed on red label applied inside battery casing.

Missing

Earpiece (s) missing.

Finish

Bright silver metal case [nickel plated ?]; synthetic [celluloid ?] tab for lifting batteries from compartment; black synthetic trim; brown synthetic [?] battery compartment liner; red paper adhesive backed label fixed inside battery compartment.

Decoration

Stylized "M" logo appears on case front.