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Binaural beard or neck receptor, 19th century

U-shaped concealed binaural beard receptor with eartips made of vulcanite. A thin hallow receptor with a long narrow opening and 28 small holes made out of metal rests under the beard and connects to the ears via flexible rubber tubes. There are springs inside the rubber tubes to allow the user to insert the eartips. Could also be worn under a scarf or tie.

London Dome hearing trumpet, ca. 1850

Black metal London dome trumpet with large, 8.5 inches wide, mouthpiece/receptor. The receptor has a flowered scroll design, 6 petals, with one center, in the interior. One curved tube along the side of the receptor continues and opens in the apex of the receptor. A curved handle leads to the earpiece along the side of the receptor allowing the receptor opening to be held towards the speaker. The device weighs approximately 2 pounds.

Smith's Sound Receptor, ca. 1880

Believed to be only one of its kind made according to Goldstein. Intended for use on a table or desk and collects soundwaves from all parts of the room. Black metal (heavy) box containing 32 square metal cubicles leading to a central receptor on the verso side. The receptor is connected with an outlet pan with a cloth covered long tube (too fragile to measure) and earpiece.

Larm apparatus, 1908

One round silver metal apparatus with wind-up mechanism on one side, along with a shiny protruding volume control and a nipple type extrusion on one end. Designed by R. Barany as a noise maker device to mask or eliminate the contralateral ear during a monaural hearing test. The wind up mechanism produces a whirring sound that can be controlled by the volume button with the nipple extrusion inserted into the canal of the contralateral ear during a hearing test.

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