GB197911A - Radio apparatus tuning mechanism - Google Patents
Radio apparatus tuning mechanismInfo
- Publication number
- GB197911A GB197911A GB3457622A GB3457622A GB197911A GB 197911 A GB197911 A GB 197911A GB 3457622 A GB3457622 A GB 3457622A GB 3457622 A GB3457622 A GB 3457622A GB 197911 A GB197911 A GB 197911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pinion
- knob
- spindle
- secured
- wheel
- 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
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/14—Special arrangements for fine and coarse tuning
Landscapes
- Mechanical Control Devices (AREA)
- Structure Of Receivers (AREA)
Abstract
197,911. Huth, W. H. Dec. 19, 1922. Variable - s p e e d toothed gearing; securing toothed wheels on shafts.-A knob or handle for adjusting variometers, variable condensers, &c. used in tuning wireless apparatus drives the adjustable element through speed-reducing means, the knob or handle or element being co-axially arranged and adapted to rotate always in the same direction. Means may be provided for changing to a direct drive for rapid course adjustment. A base plate 1 secured to a wall 2 has cast in it a stud 5 on which are freely revoluble a gear-wheel 6 and pinion 7 rigid with each other. The pinion 7 meshes with a wheel 8 secured on a spindle 11, Fig. 3, preferably by riveting over the shoulder 10 thereof. The driven shaft 18 is secured in the boss 9 of the spindle 11, on which is freely mounted a sleeve 12 having at one end a pinion 13 provided with clutch pins 14. The knob 16 is fast with the sleeve 12, outward movement thereof being limited by a stop 17 screwed in the spindle 11. As shown, the pinion 13 meshes with the gear 6 for low speed, but by sliding the knob inwards, the wheels 13, 5 come out of mesh and the pins 14 engage holes in the wheel 8 for direct drive, whereby rapid coarse adjustment of the shaft 18 can be effected. A pointer (not shown) is mounted on the shaft 18 to swing between the parts 1, 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3457622A GB197911A (en) | 1922-12-19 | 1922-12-19 | Radio apparatus tuning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3457622A GB197911A (en) | 1922-12-19 | 1922-12-19 | Radio apparatus tuning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB197911A true GB197911A (en) | 1924-06-19 |
Family
ID=10367338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3457622A Expired GB197911A (en) | 1922-12-19 | 1922-12-19 | Radio apparatus tuning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB197911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791823A (en) * | 1987-07-13 | 1988-12-20 | Williams Robert A | Voltage detector apparatus |
-
1922
- 1922-12-19 GB GB3457622A patent/GB197911A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791823A (en) * | 1987-07-13 | 1988-12-20 | Williams Robert A | Voltage detector apparatus |
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