Accession number: 2006.004.004
Object type: Behind ear
Date: 1952 – 1970
Materials: Plastic; Electronic components
Measurements: 5 cm L x 1.1 cm W x 1 cm Thick
Marks/Label: Country of Origin Mark DENMARK
Serial Numbers 565 S
Hearing Device Timeline
This "Behind the ear" hearing aid was used, possibly by the donor, who also gave the Otarion body mounted aid 2006.004.003
The invention of the transistor in 1952 made possible the miniaturization of electronic circuits and made the use of valves un-necessary. This revolutionized the hearing aid industry and devices which could be worn behind the ear, or in the frames of eye glasses became available. Our example is probably a "second generation" device from about the 1960s. It was made in Denmark, but purchased in North Sydney, Cape Breton, Nova Scotia. The Georeference is for that community.
The website http://beckerexhibits.wustl.edu/did/timeline/ which is a Hearing Device Time-line says:
Transistor hearing aids are introduced and begin replacing vacuum tube hearing aids. The smaller transistor size and lower battery voltage requirements permit a dramatic miniaturization in hearing devices. The transistor also permits other styles of hearing aids to be developed, such as the behind-the-ear model and the hearing aid built within eyeglass temples. Patents for these styles pre-date the transistor by many years – patents for eyeglass models date back to 1931 – but these designs could not be made practical until the transistor was perfected.".
Description: Beige Plastic square sectioned semi-crescent shaped device with curved clear tube at the narrow end.
History of Use: Used as a hearing enhancement device. Discarded when replaced by more advanced technology. Collected by donor. Donated to museum without further record of donor or provenance. The same individual donated 2006.004.003