GB190415043A - Improvements in Electric Telephonic Transmitters and like Instruments. - Google Patents
Improvements in Electric Telephonic Transmitters and like Instruments.Info
- Publication number
- GB190415043A GB190415043A GB190415043DA GB190415043A GB 190415043 A GB190415043 A GB 190415043A GB 190415043D A GB190415043D A GB 190415043DA GB 190415043 A GB190415043 A GB 190415043A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flange
- clamped
- carbon plates
- instruments
- electric
- 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
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
15,043. Lake, H. H., [Submarine Signal Co.]. July 5. Telephones. - The resistance in a microphone consists of carbon filaments which are contained in separate cylindrical spaces between two carbon plates mounted on mica diaphragms. The filaments c lie between the two carbon plates C<1>, C<2> which are held by the heads c<2>, c<7> of the studs c<1>, c<8>. The stud c<1> is clamped to the mica diaphragm B by the nut c<6> which clamps the flange c<4> of the nut c<3>. The stud c<8> is similarly clamped to the other diaphragm B<1>. The diaphragms B, B<1> are clamped against the flanges b, a<2> of the cylindrical case A by annular nuts b<2>, b<3>, and an insulating- ring D is held against the shoulder formed by the flange a<2> so as to be opposite the space between the carbon plates. The circuit leads c<10>, c<11> are connected to the studs c', c<8> by flange nuts c<12>, c<13>.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190415043T | 1904-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190415043A true GB190415043A (en) | 1904-08-25 |
Family
ID=32165013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190415043D Expired GB190415043A (en) | 1904-07-05 | 1904-07-05 | Improvements in Electric Telephonic Transmitters and like Instruments. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190415043A (en) |
-
1904
- 1904-07-05 GB GB190415043D patent/GB190415043A/en not_active Expired
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