1891-06-16 · Communication
An 1891 patent documents paired ear receivers held by a resilient yoke.
The patent addresses securing telephone receivers while leaving the operator’s hands free.
Two receiver housings attach to a spring-like support; rubber-covered earpieces sit at the ears.
This is direct evidence of a wearable, two-ear electrical listening design before Baldwin’s later devices.
A patent grant dates a documented design. It does not prove the first invention, commercial adoption or stereo reproduction.
No cleared reproduction; view the source collection.
patent · Reviewed 2026-09-27 · primary-source
Primary-source confidence means the source directly documents the statement, not that every historical priority or performance claim has been independently established.