GB273924A - Improvements appertaining to telephones - Google Patents
Improvements appertaining to telephonesInfo
- Publication number
- GB273924A GB273924A GB2111426A GB2111426A GB273924A GB 273924 A GB273924 A GB 273924A GB 2111426 A GB2111426 A GB 2111426A GB 2111426 A GB2111426 A GB 2111426A GB 273924 A GB273924 A GB 273924A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mouthpiece
- secured
- cover
- felt
- screws
- 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
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
273,924. Tunstall, J. W. Aug. 27, 1926.. Sanitary and hygienic devices. - The mouthpiece of a telephone transmitter is adapted to be closed by a lid or cover f, hinged at g to an annular member a secured to the mouthpiece by screws c, the cover f having fixed to its inner surface a hemispherical joint-forming device h of spongy indiarubber. cork, felt &c. The cover, which may be spring-operated to open it, is held in its closed position by a catch member k. A cavity p is formed in the part h, a disinfectant, such as camphor, being inserted therein through an opening h' normally covered by a detachable lid of gauze. The member a, instead of being secured by the screws c, may be threaded so as screw on to the mouthpiece or may be secured in position by a clamping spring. A layer of leather, rubber or felt is provided on the inner surface of the member a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2111426A GB273924A (en) | 1926-08-27 | 1926-08-27 | Improvements appertaining to telephones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2111426A GB273924A (en) | 1926-08-27 | 1926-08-27 | Improvements appertaining to telephones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB273924A true GB273924A (en) | 1927-07-14 |
Family
ID=10157445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2111426A Expired GB273924A (en) | 1926-08-27 | 1926-08-27 | Improvements appertaining to telephones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB273924A (en) |
-
1926
- 1926-08-27 GB GB2111426A patent/GB273924A/en not_active Expired
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