GB808471A - Improvements in or relating to indicating means for tone control devices - Google Patents
Improvements in or relating to indicating means for tone control devicesInfo
- Publication number
- GB808471A GB808471A GB24887/57A GB2488757A GB808471A GB 808471 A GB808471 A GB 808471A GB 24887/57 A GB24887/57 A GB 24887/57A GB 2488757 A GB2488757 A GB 2488757A GB 808471 A GB808471 A GB 808471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- tone control
- light
- relating
- control devices
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
-
- 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
- H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Circuits Of Receivers In General (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
808,471. Indicating-apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 7, 1957 [Aug. 10, 1956], No. 24887/57. Class 40 (5). An indicator for a tonecontrol device, suitable for radio receivers, comprises a helical spring which when extended by the operation of the tonecontrol varies the intensity of a beam of light which passes through a dial plate. When the tone control knob 5, Fig. 1, is operated, an extension 15 to the shaft winds up a cord 13 which lengthens the flattened spring 11. The opened turns of the spring allow more light to pass from the screen 23 to the dial-plate 1. The window 19 may be provided with a translucent, coloured or luminescent layer which may also be provided on the screen 23 and may carry a picture. In another embodiment, Fig. 3 (not shown), the spring surrounds the light source.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL808471X | 1956-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB808471A true GB808471A (en) | 1959-02-04 |
Family
ID=19836734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24887/57A Expired GB808471A (en) | 1956-08-10 | 1957-08-07 | Improvements in or relating to indicating means for tone control devices |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1058584B (en) |
| FR (1) | FR1180969A (en) |
| GB (1) | GB808471A (en) |
| NL (2) | NL91376C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2797463A (en) * | 1953-03-12 | 1957-07-02 | Talon Inc | Extruded fastener |
-
0
- NL NL209731D patent/NL209731A/xx unknown
- NL NL91376D patent/NL91376C/xx active
-
1957
- 1957-08-06 DE DEN13974A patent/DE1058584B/en active Pending
- 1957-08-07 GB GB24887/57A patent/GB808471A/en not_active Expired
- 1957-08-08 FR FR1180969D patent/FR1180969A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL91376C (en) | |
| FR1180969A (en) | 1959-06-10 |
| DE1058584B (en) | 1959-06-04 |
| NL209731A (en) |
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