GB616763A - Improvements in or relating to telephone instruments and apparatus - Google Patents
Improvements in or relating to telephone instruments and apparatusInfo
- Publication number
- GB616763A GB616763A GB2742946A GB2742946A GB616763A GB 616763 A GB616763 A GB 616763A GB 2742946 A GB2742946 A GB 2742946A GB 2742946 A GB2742946 A GB 2742946A GB 616763 A GB616763 A GB 616763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- telephone
- relating
- bailey
- earpiece
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
616,763. Telephone instruments. BAILEY, W. C., and BAILEY, C. N. Sept. 12, 1946, No. 27429. [Class 40 (iv)] The earpiece of a telephone set encloses a buzzer, the vibrations of which are picked up by the diaphragm and transmitted to the other end of the telephone line. Operation of a switch e<SP>1</SP> at station A operates a buzzer g<SP>1</SP> to vibrate the diaphragm m<SP>1</SP> which varies the flux in an associated coil and so vibratos the diaphragm m<SP>2</SP> of the set at station B loudly enough to attract attention. The speaking and listening circuits are in parallel. The magnets in each earpiece may be separate, as shown, or they may be combined in a horseshoe magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2742946A GB616763A (en) | 1946-09-12 | 1946-09-12 | Improvements in or relating to telephone instruments and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2742946A GB616763A (en) | 1946-09-12 | 1946-09-12 | Improvements in or relating to telephone instruments and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB616763A true GB616763A (en) | 1949-01-26 |
Family
ID=10259445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2742946A Expired GB616763A (en) | 1946-09-12 | 1946-09-12 | Improvements in or relating to telephone instruments and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB616763A (en) |
-
1946
- 1946-09-12 GB GB2742946A patent/GB616763A/en not_active Expired
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