GB875390A - Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatus - Google Patents
Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatusInfo
- Publication number
- GB875390A GB875390A GB2035558A GB2035558A GB875390A GB 875390 A GB875390 A GB 875390A GB 2035558 A GB2035558 A GB 2035558A GB 2035558 A GB2035558 A GB 2035558A GB 875390 A GB875390 A GB 875390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulleys
- shaft
- cord
- rotates
- pulley
- 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
- H03J1/10—Rope drive; Chain drive
Landscapes
- Structure Of Receivers (AREA)
Abstract
875,390. Adjusting radio tuning controls. GENERAL ELECTRIC CO. Ltd. June 23, 1959 [June 25, 1958], No. 20355/58. Class 40(5) [Also in Group XXIV] An adjusting means for an electrical component comprises two pulleys one mounted on a component drive shaft, and one of which, at least varies in diameter along its axial length. Each pulley has a helical groove running around it, in which a cord is arranged, such that when one shaft rotates the other rotates by an amount determined by the ratios of the radii of the grooves at the point of engagement between the cord and pulleys. A tuning capacitor 2 is driven via a reduction gear 6, by a drive shaft 5 on which is mounted two frusto-conical pulleys 7, 9 each having a helical groove 8, 10. A second shaft 11 to which is attached the control knob 23 carries two similar grooved pulleys 12, 13 and also a further pulley 18 which in conjunction with the pulley 20 operates an indicator 21 mounted on a cord 19. Cords 14, 17 are wound about the pulleys 7, 12 and 9, 13 respectively such that rotation of the shaft 11 rotates the shaft 5. The capacitor is of the type in which at any setting a given small rotation of the shaft produces the same percentage change in resonant frequency of the tuned circuit, and the radii of the wide and narrow ends of the pulleys 7, 9, 12, 13 are made such that a substantially linear relation between frequency and movement of pointer 21 is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2035558A GB875390A (en) | 1958-06-25 | 1958-06-25 | Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2035558A GB875390A (en) | 1958-06-25 | 1958-06-25 | Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875390A true GB875390A (en) | 1961-08-16 |
Family
ID=10144570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2035558A Expired GB875390A (en) | 1958-06-25 | 1958-06-25 | Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351197A (en) * | 1981-08-19 | 1982-09-28 | Carson Donald G | Precision positioning apparatus having a rotating driving element and a rotating driven element |
-
1958
- 1958-06-25 GB GB2035558A patent/GB875390A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351197A (en) * | 1981-08-19 | 1982-09-28 | Carson Donald G | Precision positioning apparatus having a rotating driving element and a rotating driven element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3438271A (en) | Rotary cam and spring loaded follower devices and arrangements incorporating same | |
| US2106088A (en) | Drive mechanism | |
| US2491341A (en) | Tuning mechanism | |
| US2756599A (en) | Tuning control mechanism | |
| GB1180939A (en) | Improvements in or relating to Accurate Adjustment Devices. | |
| GB875390A (en) | Improvements in or relating to devices for adjusting and indicating the setting of variable electrical components in electrical apparatus | |
| US2630716A (en) | Tuning mechanism | |
| US3194080A (en) | Drive system | |
| US2498036A (en) | Transmission | |
| US2205103A (en) | Tuning control system for radio receivers | |
| US2253921A (en) | Variable speed transmission | |
| US2191872A (en) | Variable speed electric motor | |
| US2426960A (en) | Chain drive | |
| US2909067A (en) | Mechanical drive and indicator | |
| US3431884A (en) | Tuning control for radio receivers | |
| US2432327A (en) | Electrical speed-responsive system with variable-ratio drive | |
| US2485464A (en) | Variable pitch drive screw and tuning system | |
| US2526610A (en) | Mechanical tuning adjuster | |
| US1854555A (en) | Control mechanism for radio apparatus | |
| US2487349A (en) | Shaft rotation-limiting apparatus | |
| US2523032A (en) | Tuning mechanism | |
| US2060537A (en) | Indicating device | |
| US2122912A (en) | Automatic remote control radio receiving set | |
| US3481214A (en) | Asynchronous drive system | |
| US2929251A (en) | Combination fine tuning and slewing device |