Two Telex brand hearing aids (b-c) in brown leather case (a), with warranty paper (d); the case is brown leather and is tightly closed at the top, becoming wider at the bottom; the top two ends of the case have metal hinges that, when squeezed, allow the case to be opened; the case is lined inside …
Two Telex brand hearing aids (b-c) in brown leather case (a), with warranty paper (d); the case is brown leather and is tightly closed at the top, becoming wider at the bottom; the top two ends of the case have metal hinges that, when squeezed, allow the case to be opened; the case is lined inside with grey fabric; the hearing aids are tan coloured behind-the-ear style hearing aids, with a curved plastic piece which goes behind the wearer's ear; this piece contains a slot for the battery (and the small, round battery inside), a volume dial, and an M T O switch; from this plastic piece, there is a small rubber tube that curves, ending in a rubber piece shaped to the wearer's ear, which is an orange/pink colour and has a hole in the end which goes into the wearer's ear; inside the case is also a sheet of paper folded in half with brown print and blue handwriting in pen, detailing some manufacturing information and the Telex Repair Warranty on both sides of the paper.
Number Of Parts
4
Part Names
a - case: Length 8.0 cm X Width 9.0 cm X Height 1.5 cm
b-c - hearing aids: Length 5.6 cm X Width 4.0 cm X Height 1.5 cm
Raised on case (a): "TELEX"; embossed and printed on hearing aids and batteries: "81 3791 B C // 340 // ROVR // TELEX // U.S.A. // 1 // 2 // 3 // 4 // O // T // M //115 // 111 // TO // SPL // 12 // B // D // LOW CUT // 675 // + // JAPAN 42"; printed on paper, front side: "TELEX REPAIR WARRANTY // GARANTIE DE RÉPARATION "TELEX" // Model No. // Modèle No. 34RBQ. // Serial No. // Série No. 81-3791 // Expiration Date // Date d'expiration // May 2 // 85 // This instrument has been repaired under the Telex Warranty // Repair Plan. Should it need repair during this period, present this // card to any authorized Telex distributor. // Limited Warranty // Cette prothèse a été réparée selon le plan de réparation garantie // de "TELEX". Au cas ou la réparation serait défectueuse, durant // la période de garantie, présenter cette carte chez un distributeur // autorisé "TELEX". // Garantie limitée // (See Reverse Side) (voir au verso)"; printed on paper, back side: "This warranty is void if the instrument has been abused, // tampered with, or otherwise mistreated. // This warranty is void if an external, detachable cord has been // used, which is not genuine TELEX product. // External, detachable parts are not covered by this warranty // (except receiver, speakers). // THIS WARRANTY IS VOID IF THE SPEAKER HAS BEEN CHANGED. // Cette garantie est annulée si la prothèse a été modifiée, // ednommagee ou mal entretenue. // Cette garantie est annulée si un cordon autre que "TELEX" a // été employé. // Les pièces externes détachables ne sont pas couvertes par // cette garantie (à l'exception des micros et écouteurs). // CETTE GARANTIE EST ANNULÉE SI L'ÉCOUTEUR A ÉTÉ ÉCHANGÉ. // TELEX // TELEX HEARING INSTRUMENTS // Telephone: (416) 335-3744".
Permanent Location
Storage Room 0010
0010-E3-17
Unit Of Measure
centimeters
Condition Remarks
Tiny white marks on leather case, two on front and two on back; some markings rubbed off of hearings aids; paper layers separating, minor fraying at edges, some discolouration around blue pen marks and spreading over page.
Copy Type
original
Reference Types
Websites
Reference Comments
"What is a telecoil?", Widex Blog, July 28, 2016: https://global.widex.com/en/blog/what-is-a-telecoil
"Hearing aid types", Connect Hearing, 2019: https://www.connecthearing.ca/hearing-aids/types/
"Deafness in Disguise: Timeline of Hearing Devices and Early Deaf Education", Washington University School of Medicine, Bernard Becker Medical Library, 2005-2009: http://beckerexhibits.wustl.edu/did/timeline/
"Deafness in Disguise: Concealed Hearing Devices of the 20th Century", Washington University School of Medicine, Bernard Becker Medical Library, 2005-2009: http://beckerexhibits.wustl.edu/did/20thcent/index.htm
Research Facts
This hearing aid is a behind-the-ear hearing aid, with a piece that sits behind the ear (the hard plastic part) and a piece that connects from there and sits in the ear (the rubber piece). Today, the most commonly used types of hearing aids are Behind-the-Ear (BTE) , Receiver-In-Canal (RIC), In-the-Ear (ITE), and Invisible-in-Canal (IIC).
Early predecessors to hearing aids were ear trumpets; a horn in which the small end was placed in a person's ear and the large, bell end amplified sounds coming in.
Zinc Air batteries were introduced in 1977 and helped pave the way for greater sales of In-the-Ear hearing aids, as they were smaller batteries.
Throughout the 20th century, with the introduction of electrical hearing aids, new ways of concealing hearing aids were also introduced, including concealing the devices in purses and cases that were made to look like camera cases.
This hearing aid has a t-switch, which refers to a telecoil. A telecoil is a wire coiled around a rod inside the hearing aid, and it functions to pick up magnetic signals and bring them into the hearing aid as sound. This way, background noise can be cut out so the wearer can focus on the voice of someone speaking to them, music, a lecture, etc. This can be linked to existing sound systems in public places so that the sound is delivered directly to the hearing aids.