GB516633A - Electric control apparatus for tuning radio receivers - Google Patents
Electric control apparatus for tuning radio receiversInfo
- Publication number
- GB516633A GB516633A GB19587/38A GB1958738A GB516633A GB 516633 A GB516633 A GB 516633A GB 19587/38 A GB19587/38 A GB 19587/38A GB 1958738 A GB1958738 A GB 1958738A GB 516633 A GB516633 A GB 516633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuning
- driven
- motor
- shaft
- tuning device
- 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
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/14—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by auxiliary power
- H03J5/146—Settings desired by a switch controlled together with the tuning member and which stops the control as soon as a desired position is reached
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Structure Of Receivers (AREA)
- Transmission Devices (AREA)
- Mechanical Control Devices (AREA)
Abstract
516,633. Adjusting wireless apparatus. BRITISH THOMSON - HOUSTON CO., Ltd. July 1, 1938, No. 19587. Convention date, July 1, 1937. [Class 37] [Also in Groups XXXVIII, XXXVII and XXIV] In a motor-controlled tuning system for wireless receivers, the tuning device is driven through an epicyclic gearing one element of which is also rotatable by a knob for effecting manual tuning. In one form the gearing is of the usual type including a sun wheel, an intermediate planetgear coupled to the tuning device and a ring gear driven by the motor. Manual tuning is effected by rotation of the sun gear. In the form shown in Fig. 5, the tuning device is driven from a pulley 77 provided on a race 76 for balls 75 which co-operate with an outer race 78 adapted to be driven by a motor and a conical surface 74 on the manual adjustment shaft: The ratio of drive by the shaft is automatically altered after a predetermined rotation of the knob, by a cam surface 80 which through an arm 82 shifts the shaft longitudinally and releases the balls. Thereafter the drive is effected through the arm and a projection 81 on the cam surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US150389A US2186828A (en) | 1937-06-25 | 1937-06-25 | Tuning system |
| US151432A US2186823A (en) | 1937-06-25 | 1937-07-01 | Tuning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516633A true GB516633A (en) | 1940-01-08 |
Family
ID=22538749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19587/38A Expired GB516633A (en) | 1937-06-25 | 1938-07-01 | Electric control apparatus for tuning radio receivers |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US2186828A (en) |
| CH (1) | CH207143A (en) |
| FR (1) | FR839812A (en) |
| GB (1) | GB516633A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2434470A (en) * | 1941-07-17 | 1948-01-13 | Rhodes Inc M H | Audible time signal |
| US2582380A (en) * | 1942-02-24 | 1952-01-15 | Hartford Nat Bank & Trust Co | Tuning apparatus for radio receivers and the like |
| US2415678A (en) * | 1942-10-03 | 1947-02-11 | Gen Electric | Antenna |
| US2445031A (en) * | 1942-12-10 | 1948-07-13 | Jr Eugene F Mcdonald | Remote radio tuning control system |
| US2433805A (en) * | 1943-09-27 | 1947-12-30 | Zenith Radio Corp | Control means for sequentially and selectively adjusting variable reactances over a band of frequencies |
| US2501003A (en) * | 1945-04-13 | 1950-03-21 | Colonial Radio Corp | Push-button tuning for signalseeking receivers |
| US2478307A (en) * | 1946-01-17 | 1949-08-09 | Horace E Overacker | Mechanical device |
| US2546401A (en) * | 1947-04-24 | 1951-03-27 | Sylvania Electric Prod | Muting system for radio receivers |
| US2637487A (en) * | 1948-03-09 | 1953-05-05 | James G Sawyer | Blower |
| US2712930A (en) * | 1953-07-30 | 1955-07-12 | Willard C Robinette | Centrifugal device |
| US2821631A (en) * | 1955-05-23 | 1958-01-28 | Philco Corp | Signal-seeking device |
| US2868967A (en) * | 1956-06-15 | 1959-01-13 | Admiral Corp | Remote control tuner |
| US3466949A (en) * | 1967-12-26 | 1969-09-16 | Ingwald L Ramberg | Machine tool indexing assembly |
| US3659466A (en) * | 1970-05-04 | 1972-05-02 | Ferro Mfg Corp | Window regulator mechanism |
| US3973207A (en) * | 1975-03-11 | 1976-08-03 | Matsushita Electric Industrial Co., Ltd. | Electronic channel selector including control means for selecting a channel and applying power to a load circuit |
| GB1588949A (en) * | 1977-03-30 | 1981-05-07 | Sony Corp | Tuning apparatus |
-
1937
- 1937-06-25 US US150389A patent/US2186828A/en not_active Expired - Lifetime
- 1937-07-01 US US151432A patent/US2186823A/en not_active Expired - Lifetime
-
1938
- 1938-06-24 FR FR839812D patent/FR839812A/en not_active Expired
- 1938-07-01 CH CH207143D patent/CH207143A/en unknown
- 1938-07-01 GB GB19587/38A patent/GB516633A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2186828A (en) | 1940-01-09 |
| FR839812A (en) | 1939-04-13 |
| CH207143A (en) | 1939-09-30 |
| US2186823A (en) | 1940-01-09 |
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