GB521183A - Improvements in radio-receiving sets - Google Patents
Improvements in radio-receiving setsInfo
- Publication number
- GB521183A GB521183A GB16482/39A GB1648239A GB521183A GB 521183 A GB521183 A GB 521183A GB 16482/39 A GB16482/39 A GB 16482/39A GB 1648239 A GB1648239 A GB 1648239A GB 521183 A GB521183 A GB 521183A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- spring
- june
- stop
- shaft
- 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
- H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/04—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
- H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
-
- 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
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/066—Constructional details regarding potentiometric setting of voltage or current variable reactances
Landscapes
- Mechanical Control Devices (AREA)
- Transmitters (AREA)
Abstract
521,183. Adjusting wireless apparatus. PHILIPS LAMPS, Ltd. June 5, 1939, No. 16482. Convention date, June 8, 1938. [Class 37] The movements of station selecting keys or their equivalents are transmitted to a tuning condenser through a spring. The shaft 1 of the condenser 2 is urged in one direction by spring 15 and rotated in the other direction by pinion 3 and sector 4 under the influence of spring 8 when the member 6, which is free upon the shaft 5, is depressed to a determined amount by one of the buttons 7. Movement of the condenser is damped by the dashpot 13, and continues until the stop 9 comes into contact with the member 6. Due to the presence of this stop and a preliminary tension in the spring 8, the correct position of the condenser, dependent upon the position of the keys 7, is assured. The application of the invention to a three-section gang condenser of the slidableelectrode form is also described, Fig. 2 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL212536X | 1938-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521183A true GB521183A (en) | 1940-05-14 |
Family
ID=19778895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16482/39A Expired GB521183A (en) | 1938-06-08 | 1939-06-05 | Improvements in radio-receiving sets |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2290644A (en) |
| BE (1) | BE434733A (en) |
| CH (1) | CH212536A (en) |
| DE (1) | DE717159C (en) |
| FR (1) | FR855803A (en) |
| GB (1) | GB521183A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE951820C (en) * | 1952-06-12 | 1956-11-08 | Blaupunkt Werke G M B H Zweign | Pushbutton arrangement for communication devices |
| JPS5847550Y2 (en) * | 1977-03-17 | 1983-10-29 | ソニー株式会社 | Mode switching device in recording/playback equipment |
-
0
- BE BE434733D patent/BE434733A/xx unknown
-
1939
- 1939-06-05 GB GB16482/39A patent/GB521183A/en not_active Expired
- 1939-06-06 DE DEN43339D patent/DE717159C/en not_active Expired
- 1939-06-06 CH CH212536D patent/CH212536A/en unknown
- 1939-06-06 FR FR855803D patent/FR855803A/en not_active Expired
- 1939-06-24 US US281021A patent/US2290644A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR855803A (en) | 1940-05-21 |
| BE434733A (en) | |
| US2290644A (en) | 1942-07-21 |
| CH212536A (en) | 1940-11-30 |
| DE717159C (en) | 1942-02-07 |
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