GB551320A - Improvements in graduated scale indicators, such as may be used as tuning scales for radio-receivers - Google Patents
Improvements in graduated scale indicators, such as may be used as tuning scales for radio-receiversInfo
- Publication number
- GB551320A GB551320A GB1026241A GB1026241A GB551320A GB 551320 A GB551320 A GB 551320A GB 1026241 A GB1026241 A GB 1026241A GB 1026241 A GB1026241 A GB 1026241A GB 551320 A GB551320 A GB 551320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scale
- cylinder
- receivers
- radio
- graduated scale
- 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
- H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
551,320. Radio receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and COCKERELL, C. S. Aug. 12, 1941, No. 10262. [Class 37] [Also in Group XIX] The graduated scale member of an indicating apparatus is arranged to move successively across and along the length of a cursor line which is itself curved or shaped to correct the readings for ascertained errors. As shown applied to the tuning scales of radio receivers, Figs. 1 and 2, the scale s is engraven or otherwise marked, in accordance with a known law, helically upon a cylinder c on an operating axle a. The axle is also operatively connected to a pointer p traversing a scale equal to the length of the cylinder. The casing of the receiver is formed with a window closed by a transparent covering t with a correction curve cc forming a cursor line. The scale on the cylinder may have a plurality of ranges and co-operate with a corresponding number of pointers. The correction curve is obtained by calibrating the receiver at a number of selected points on the scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1026241A GB551320A (en) | 1941-08-12 | 1941-08-12 | Improvements in graduated scale indicators, such as may be used as tuning scales for radio-receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1026241A GB551320A (en) | 1941-08-12 | 1941-08-12 | Improvements in graduated scale indicators, such as may be used as tuning scales for radio-receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB551320A true GB551320A (en) | 1943-02-17 |
Family
ID=9964616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1026241A Expired GB551320A (en) | 1941-08-12 | 1941-08-12 | Improvements in graduated scale indicators, such as may be used as tuning scales for radio-receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB551320A (en) |
-
1941
- 1941-08-12 GB GB1026241A patent/GB551320A/en not_active Expired
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