GB321612A - Improvements in micro-telephones - Google Patents
Improvements in micro-telephonesInfo
- Publication number
- GB321612A GB321612A GB295029A GB295029A GB321612A GB 321612 A GB321612 A GB 321612A GB 295029 A GB295029 A GB 295029A GB 295029 A GB295029 A GB 295029A GB 321612 A GB321612 A GB 321612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- microphone
- casings
- receiver
- covers
- clamped
- 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
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
321,612. Skerrett, H. N., (Fuld & Co. Telephon-und Telegraphenwerke Akt.-Ges., H.). Jan. 29, 1929. Hand - combination sets; earpieces; mouthpieces.-The covers 10, 11 of the receiver 3 and microphone 5 respectively of a micro-telephone, screw into the front of casings 6 and 7 and are so formed as to afford no grip for the hand. The covers can only be unscrewed by special tools, which fit the hexagonal opening 12 in the cover 10 and the slots 13 in the cover 11. The handle 1 and casings 2, 4 are formed in one piece, of insulating material, by squirting or pressing, and the walls 6 and 7 of these casings protrude beyond the receiver and microphone, which are flanged and clamped on to shoulders formed in the casing, by the covers 10 and 11. A ring 15 rest on another shoulder behind the microphone and carries contacts 16, 17, the latter being ring shaped at 20 and clamped between the microphone flange and its shoulder. A metallic tube 23 through the handle 1 is provided at either end with terminals 24, 25 and serves as one lead to the receiver, the other being an insulated wire passing through the tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB295029A GB321612A (en) | 1929-01-29 | 1929-01-29 | Improvements in micro-telephones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB295029A GB321612A (en) | 1929-01-29 | 1929-01-29 | Improvements in micro-telephones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB321612A true GB321612A (en) | 1929-11-14 |
Family
ID=9749098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB295029A Expired GB321612A (en) | 1929-01-29 | 1929-01-29 | Improvements in micro-telephones |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB321612A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2165419A (en) * | 1984-09-29 | 1986-04-09 | Toshiba Kk | Loudspeaker construction |
-
1929
- 1929-01-29 GB GB295029A patent/GB321612A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2165419A (en) * | 1984-09-29 | 1986-04-09 | Toshiba Kk | Loudspeaker construction |
US4623034A (en) * | 1984-09-29 | 1986-11-18 | Kabushiki Kaisha Toshiba | Loudspeaker construction |
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