GB219470A - A portable wireless receiving set - Google Patents
A portable wireless receiving setInfo
- Publication number
- GB219470A GB219470A GB1708923A GB1708923A GB219470A GB 219470 A GB219470 A GB 219470A GB 1708923 A GB1708923 A GB 1708923A GB 1708923 A GB1708923 A GB 1708923A GB 219470 A GB219470 A GB 219470A
- Authority
- GB
- United Kingdom
- Prior art keywords
- telephone
- inductance
- condenser
- telephones
- coil
- 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
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/08—Constructional details, e.g. cabinet
- H04B1/086—Portable receivers
Abstract
219,470. Lauste, H. G. July 2, 1923. Receiving sets, construction of; aerials; crystal detectors.-Sets of the kind contained more or less within the casing of the telephones are provided with a ring-shaped inductance and condenser arranged round the telephone magnet of an ear-piece or one round each magnet of two earpieces. The inductance 10 is wound on a former 12 comprising a series of slots 11, Fig. 3 and is thus made up of a number of narrow coils in series. Tappings are led through transverse slots 16 to contact studs 17, Fig. 1. The condenser is made up of a length of twin wire wound on a bobbin. A crystal detector is suspended by the telephone cords and comprises two vulcanite discs spaced apart by a glass cylinder. Aerial and earth connections are made by clips 52, 53 and extra telephones may be connected at 54. The box, Fig. 7, for housing the set is provided in one face with a coil 61 to act as a frame aerial. The telephone receivers may have adjustable magnets. In a modified arrangement, Fig. 6, both condenser and inductance are contained in a single ear-piece, and a different type of detector 85, 86 is provided within the handle 83. According to the Provisional Specification, the telephone magnets are of cobalt steel and the coil is enclosed in an iron cylinder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1708923A GB219470A (en) | 1923-07-02 | 1923-07-02 | A portable wireless receiving set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1708923A GB219470A (en) | 1923-07-02 | 1923-07-02 | A portable wireless receiving set |
Publications (1)
Publication Number | Publication Date |
---|---|
GB219470A true GB219470A (en) | 1924-07-31 |
Family
ID=10089046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1708923A Expired GB219470A (en) | 1923-07-02 | 1923-07-02 | A portable wireless receiving set |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB219470A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018116834A1 (en) * | 2016-12-21 | 2018-06-28 | Sony Corporation | Headphone device |
-
1923
- 1923-07-02 GB GB1708923A patent/GB219470A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018116834A1 (en) * | 2016-12-21 | 2018-06-28 | Sony Corporation | Headphone device |
US11363366B2 (en) | 2016-12-21 | 2022-06-14 | Sony Corporation | Headphone device |
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