GB190513228A - Improvements in Telephone or like Transmitters. - Google Patents
Improvements in Telephone or like Transmitters.Info
- Publication number
- GB190513228A GB190513228A GB190513228DA GB190513228A GB 190513228 A GB190513228 A GB 190513228A GB 190513228D A GB190513228D A GB 190513228DA GB 190513228 A GB190513228 A GB 190513228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- polished
- cover
- balls
- insulated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
13,228. Sawrey, J. S. June 27. Ear appliances.-Microphones for the use of deaf persons are constructed with hollow balls of carbon, or material coated with carbon, either polished or unpolished. The back carbon electrode B has a number of polished recesses C to receive the hollow carbon balls N. The polished carbon diaphragm A is supported in the cover D by insulated rings F, A, and is connected to the leads T<1>, T<2> by a metal ring 0, touching the diap h r a g m but insulated from the cover D. The microphone is mounted in an outer casing H, acting as a sound resonator, and formed with a number of segmental openings Z, and a central cone Y, whereby the sound is deflected into the hole K of the cover D.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190513228T | 1905-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190513228A true GB190513228A (en) | 1906-06-07 |
Family
ID=32197382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190513228D Expired GB190513228A (en) | 1905-06-27 | 1905-06-27 | Improvements in Telephone or like Transmitters. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190513228A (en) |
-
1905
- 1905-06-27 GB GB190513228D patent/GB190513228A/en not_active Expired
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