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John Wesley Gibboney
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Publication of GB189718122ApublicationCriticalpatent/GB189718122A/en
18,122. Gibboney, J. W. Aug. 3. Drawings to Specification. Electric bells.-A bell is described in which the magnet is wound with primary and secondary coils to act as an induction coil. The core of the magnet is provided with a pivoted armature carrying the striking-lever, an external permanent magnet producing the necessary oscillations.
GB189718122D1897-08-031897-08-03Improvements in Transmitting and Receiving Sounds by Telephony.
ExpiredGB189718122A
(en)
Improvements in Devices for the Transformation of Electrical Alternating Currents into Sound Waves, Use being Made of Resonators Tuned for Different Frequencies.