GB493256A - Improvements in or relating to two speed gear mechanisms for actuating tuning devices in radio receivers and other tunable electric apparatus - Google Patents
Improvements in or relating to two speed gear mechanisms for actuating tuning devices in radio receivers and other tunable electric apparatusInfo
- Publication number
- GB493256A GB493256A GB3576/38A GB357638A GB493256A GB 493256 A GB493256 A GB 493256A GB 3576/38 A GB3576/38 A GB 3576/38A GB 357638 A GB357638 A GB 357638A GB 493256 A GB493256 A GB 493256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- driving
- speed gear
- electric apparatus
- actuating
- relating
- 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
- 230000007246 mechanism Effects 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
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
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Details Of Aerials (AREA)
- Transmission Devices (AREA)
Abstract
493,256. Adjusting wireless apparatus; shaft couplings. STANDARD TELEPHONES & CABLES, Ltd. Feb. 4, 1938, No. 3576. Convention date, April 7, 1937. [Class 37] [Also in Group XXIV] A two-speed gear mechanism for tunable electric apparatus comprises driving and driven members connected through reduction gear, one or more members being interposed between the driving and driven members and being successively entrained by the driving member through more than one complete revolution. In Fig. 1, the driving member 1 includes a flywheel 2 and has a pin 3 which engages a lug on the first of a series of discs 4, the discs in turn engaging radial projections on sleeves 5 until the last disc abuts against a pin 6 on the driven member 7. In Fig. 7, the rotation through more than one complete revolution is effected by a sliding nut 9, the driving and driven members 1, 7 being concentric, and guides 10 preventing rotation of the nut relative to the member 7. Stops 11, 12 limit the number of revolutions before a direct drive occurs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE212748X | 1937-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493256A true GB493256A (en) | 1938-10-05 |
Family
ID=3865964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3576/38A Expired GB493256A (en) | 1937-04-07 | 1938-02-04 | Improvements in or relating to two speed gear mechanisms for actuating tuning devices in radio receivers and other tunable electric apparatus |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH212748A (en) |
| FR (1) | FR836228A (en) |
| GB (1) | GB493256A (en) |
| NL (1) | NL57657C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020389A (en) * | 1989-08-30 | 1991-06-04 | Robertshaw Controls Company | Control device having push to turn selector means and method of making the same |
| US5121653A (en) * | 1989-08-30 | 1992-06-16 | Robertshaw Controls Company | Control device having a push to turn selector means |
-
0
- NL NL57657D patent/NL57657C/xx active
-
1938
- 1938-02-04 GB GB3576/38A patent/GB493256A/en not_active Expired
- 1938-04-05 FR FR836228D patent/FR836228A/en not_active Expired
- 1938-04-07 CH CH212748D patent/CH212748A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020389A (en) * | 1989-08-30 | 1991-06-04 | Robertshaw Controls Company | Control device having push to turn selector means and method of making the same |
| US5121653A (en) * | 1989-08-30 | 1992-06-16 | Robertshaw Controls Company | Control device having a push to turn selector means |
Also Published As
| Publication number | Publication date |
|---|---|
| FR836228A (en) | 1939-01-12 |
| NL57657C (en) | |
| CH212748A (en) | 1940-12-15 |
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