GB347622A - Improvements relating to indicating devices for wireless receiving apparatus - Google Patents
Improvements relating to indicating devices for wireless receiving apparatusInfo
- Publication number
- GB347622A GB347622A GB177630A GB177630A GB347622A GB 347622 A GB347622 A GB 347622A GB 177630 A GB177630 A GB 177630A GB 177630 A GB177630 A GB 177630A GB 347622 A GB347622 A GB 347622A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pin
- dial
- station
- tuned
- wavelength
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
- H03J1/044—Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination
Landscapes
- Structure Of Receivers (AREA)
Abstract
347,622. Adjusting wireless apparatus. PARAGON RUBBER MANUFACTURING CO., Ltd., 12, Norfolk Street, Strand, London, and CROOT, G. W., The Chase, Marshalls Park, Romford, Essex. Jan. 17, 1930, No. 1776. [Class 37.] In a wireless receiving apparatus, a multiple contact switch controls the operation of a number of indicator elements which indicate the station or wavelength to which the apparatus is set. As shown applied to a tuning condenser, a number of insulated radial strips g are clamped on the sleeve hand adjusted to positions corresponding to those occupied by a pin on the inner face of the tuning dial when the condenser is set to the selected wavelengths. Each arm g carries a spring contact j which is depressed by the pin on the dial against a metal plate f thereby closing the circuit of the corresponding signal lamp, which may be located behind a translucent glass panel or stencil on which the name of the station or the wavelength is indicated. Alternatively the radial strips may comprise pairs of spring fingers which are pressed into contact by the pin on the dial. A switch is provided for opening the signal circuit when the desired station has been tuned in. The invention is also applicable to apparatus in which the operating member selects one of a number of tuned-in circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB177630A GB347622A (en) | 1930-01-17 | 1930-01-17 | Improvements relating to indicating devices for wireless receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB177630A GB347622A (en) | 1930-01-17 | 1930-01-17 | Improvements relating to indicating devices for wireless receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347622A true GB347622A (en) | 1931-04-17 |
Family
ID=9727779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB177630A Expired GB347622A (en) | 1930-01-17 | 1930-01-17 | Improvements relating to indicating devices for wireless receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB347622A (en) |
-
1930
- 1930-01-17 GB GB177630A patent/GB347622A/en not_active Expired
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