GB489291A - Improvements in or relating to driving means for electric condensers - Google Patents
Improvements in or relating to driving means for electric condensersInfo
- Publication number
- GB489291A GB489291A GB195937A GB195937A GB489291A GB 489291 A GB489291 A GB 489291A GB 195937 A GB195937 A GB 195937A GB 195937 A GB195937 A GB 195937A GB 489291 A GB489291 A GB 489291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- gear wheels
- gearing
- cam
- disc
- 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
- H03J1/18—Control by auxiliary power
Landscapes
- Braking Arrangements (AREA)
Abstract
489,291. Adjusting wireless apparatus; toothed gearing. STANDARD TELEPHONES & CABLES, Ltd., and FELDHUSEN, I. Jan. 22, 1937, No. 1959. [Class 37] [Also in Group XXIV] The movable vanes of a variable condense] are mounted on a shaft connected by gearing to the shaft of a driving motor, and means are provided for rendering the gearing ineffective at will, so that the condenser may be con trolled manually, inde pendently of the motor drive. In the con struction shown, meshing gear wheels C, D, which also mesh with gear wheels B, E respectively fixed to the driving shaft A and driven shaft F, are mounted on a frame consisting of discs I, G, which are connected together by pillars H and are freely rotatable about the shafts A, F. The disc I is formed as a brake drum surrounded by brake shoes K hinged at one end and pressed against a cam L at the other end by a spring M, the tension of which can be adjusted. In the position shown, the shaft F is rotatable manually independently of the motor, but on rotating the cam L through 90‹ by means of a handle N, the brake shoes grip the disc I and hold the frame stationary, in which postion the shaft D drives the shaft F through the gear wheels. The arrangement is particularly suitable for use in tuning an oscillator in an apparatus for recording the attenuation of a transmission line for a range of frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB195937A GB489291A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to driving means for electric condensers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB195937A GB489291A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to driving means for electric condensers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB489291A true GB489291A (en) | 1938-07-22 |
Family
ID=9731056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB195937A Expired GB489291A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to driving means for electric condensers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB489291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2452036A1 (en) * | 1979-03-23 | 1980-10-17 | Reliance Electric Co | DEMULTIPLIER WITH ADJUSTABLE STARTING SPEED |
| GB2312940A (en) * | 1996-05-01 | 1997-11-12 | Spf Engineering Limited | A valve adapter |
-
1937
- 1937-01-22 GB GB195937A patent/GB489291A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2452036A1 (en) * | 1979-03-23 | 1980-10-17 | Reliance Electric Co | DEMULTIPLIER WITH ADJUSTABLE STARTING SPEED |
| GB2312940A (en) * | 1996-05-01 | 1997-11-12 | Spf Engineering Limited | A valve adapter |
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