GB521812A - The control device for radio receivers and the like - Google Patents
The control device for radio receivers and the likeInfo
- Publication number
- GB521812A GB521812A GB34335/38A GB3433538A GB521812A GB 521812 A GB521812 A GB 521812A GB 34335/38 A GB34335/38 A GB 34335/38A GB 3433538 A GB3433538 A GB 3433538A GB 521812 A GB521812 A GB 521812A
- Authority
- GB
- United Kingdom
- Prior art keywords
- button
- depressed
- recess
- bar
- radio
- 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
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
- H03J5/32—Stationary tuning circuits or elements selected by push-button
Landscapes
- Structure Of Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
521,812. Tuning radio apparatus. PHILCO RADIO & TELEVISION CORPORATION. Nov. 25, 1938, No. 34335. Convention date, Dec. 13, 1937. [Class 37] [Also in Group XL] Each of the push-button tuning-controls 12 of a radio receiver is fitted with an opaque or coloured screen 22 which normally masks the windows 6 of the station-indicating scale, but exposes it to the light from one or more lamps 21 when the button is depressed. The button is spring-controlled at 23, 24, and is normally held by the engagement of a transverse bar 27 in a recess 26. When any button is depressed, the bar rises out of the recess 26 and enters a second recess 25 so as to hold the button in the depressed position. Simultaneously, the bar 27 frees any other button that may then be depressed. In the operative position, a contact 32 on the button-shaft bridges two stationary contacts 31 so as to bring in the selected tuned circuit (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US521812XA | 1937-12-13 | 1937-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521812A true GB521812A (en) | 1940-05-31 |
Family
ID=21975971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34335/38A Expired GB521812A (en) | 1937-12-13 | 1938-11-25 | The control device for radio receivers and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521812A (en) |
-
1938
- 1938-11-25 GB GB34335/38A patent/GB521812A/en not_active Expired
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