GB206910A - Improvements in telephones - Google Patents
Improvements in telephonesInfo
- Publication number
- GB206910A GB206910A GB2210622A GB2210622A GB206910A GB 206910 A GB206910 A GB 206910A GB 2210622 A GB2210622 A GB 2210622A GB 2210622 A GB2210622 A GB 2210622A GB 206910 A GB206910 A GB 206910A
- Authority
- GB
- United Kingdom
- Prior art keywords
- telephones
- reed
- mclachlan
- aug
- diaphragm
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
206,910. McLachlan, N. W. Aug. 14, 1922. Telephones.-In a telephone instrument of the type wherein a soft iron reed F connected to a diaphragm A is mounted between magnet poles H which contain a coil M, the reed is mounted on a torsion wire or spindle G.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2210622A GB206910A (en) | 1922-08-14 | 1922-08-14 | Improvements in telephones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2210622A GB206910A (en) | 1922-08-14 | 1922-08-14 | Improvements in telephones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB206910A true GB206910A (en) | 1923-11-14 |
Family
ID=10173986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2210622A Expired GB206910A (en) | 1922-08-14 | 1922-08-14 | Improvements in telephones |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB206910A (en) |
-
1922
- 1922-08-14 GB GB2210622A patent/GB206910A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB206910A (en) | Improvements in telephones | |
GB214787A (en) | Improvements in or relating to telephone receivers | |
GB481351A (en) | Improvements in or relating to telephone receivers | |
GB334493A (en) | Improvements in and relating to apparatus for producing sound | |
GB210358A (en) | Improvements in telephone receivers | |
GB222196A (en) | Improvements in and relating to telephones | |
GB206126A (en) | Improvements in telephone receivers | |
GB259699A (en) | Improvements in loud speaking telephones | |
GB127758A (en) | Improvements in Telephone Receivers. | |
GB185773A (en) | Improvements in and relating to electric measuring instruments | |
GB213808A (en) | Telephone receiver | |
GB227560A (en) | Improvements in telephone receivers and the like | |
GB329621A (en) | An arrangement of parallel co-operating magnets | |
GB256328A (en) | Improvements in electromagnetic instruments of the movable iron type | |
GB278406A (en) | Improvements in or relating to loud-speaking telephonic receivers | |
GB224971A (en) | Improvements in and connected with telephone "receivers" | |
GB735075A (en) | Improvements in or relating to polarised a.c. bells | |
GB255149A (en) | Improvements in or relating to loud speaking reproducer | |
GB225901A (en) | A new or improved telephone receiver | |
GB540869A (en) | Improvements in and relating to cores for instruments, apparatus and machines making use of magnetic induction | |
GB454121A (en) | Improvements in and relating to trolley wires | |
GB241166A (en) | Alternating pole magnets for electric small size machines | |
GB315596A (en) | Improvements in and relating to electric sound boxes or pick-ups for talking machines | |
GB238855A (en) | Improvements in telephone apparatus | |
GB155123A (en) | Improvements in indicators or annunciators |