GB191325659A - Improvements in Telephone Repeaters. - Google Patents
Improvements in Telephone Repeaters.Info
- Publication number
- GB191325659A GB191325659A GB191325659DA GB191325659A GB 191325659 A GB191325659 A GB 191325659A GB 191325659D A GB191325659D A GB 191325659DA GB 191325659 A GB191325659 A GB 191325659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- microphone
- core
- screw
- bearing
- microphonic
- 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
- Telephone Set Structure (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Transceivers (AREA)
Abstract
25,659. Western Electric Co., [Woodward, F. T., acting for Western Electric Co.]. Nov. 10. Telephonic relays.-A magneto-microphonic repeater, particularly applicable to wireless receiving-apparatus, is so constructed that the microphonic part may be easily replaced by one having a differently-tuned diaphragm. The magnet core is adjustable from the interior of the instrument. A cylindrical base 5 bearing connecting-screws is integral with a barrel 6 having within it the receiving-coil 12 and adjustable core 18. This core is screw-threaded at 19 and has a square end taking into a corresponding hole in the toothed disk 25, which meshes with a pinion 30 on the thumb-screw 32. By this means, the core 18 can be screw-adjusted vertically. The diaphragm 54 of the microphone is provided with a magnetic plunger 55, and is preferably made of gold-plated magnetic material. The microphone chamber has an insulating-lining 56 secured in place by a metal stud 57 with a flat top bearing a conical electrode 65 with an upturned edge 66. The circuit through this electrode is completed by way of the stud 57, which is connected with the pillar 71 on the terminal 37 by a flat spring 70. When the microphone is to be replaced, this spring can be turned aside and the part 50 bearing the microphone removed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191325659T | 1913-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191325659A true GB191325659A (en) | 1914-07-23 |
Family
ID=32580459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191325659D Expired GB191325659A (en) | 1913-11-10 | 1913-11-10 | Improvements in Telephone Repeaters. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191325659A (en) |
-
1913
- 1913-11-10 GB GB191325659D patent/GB191325659A/en not_active Expired
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