GB564930A - Improvements in or relating to radio apparatus and tuning mechanism therefor - Google Patents
Improvements in or relating to radio apparatus and tuning mechanism thereforInfo
- Publication number
- GB564930A GB564930A GB6021/43A GB602143A GB564930A GB 564930 A GB564930 A GB 564930A GB 6021/43 A GB6021/43 A GB 6021/43A GB 602143 A GB602143 A GB 602143A GB 564930 A GB564930 A GB 564930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- actuators
- tuning
- elements
- buttons
- push
- 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
- 238000006073 displacement reaction Methods 0.000 abstract 1
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
- H03J5/04—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 hand
- H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Structure Of Receivers (AREA)
Abstract
564,930. Electric selective control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 15, 1943, No. 6021. Convention date, May 30, 1942. [Class 40 (i)] [Also in Group XXXVI] Radio apparatus includes a tuning mechanism comprising one or more actuating elements, a plurality of selector elements, each of which is arranged to be actuated by an actuating element to tune the apparatus to a predetermined frequency and means for causing a relative displacement between said actuating element or elements and said selector elements to enable different selector elements to be actuated by a single actuating element. As shown in Fig. 3, tuning is effected by adjustment of a condenser J by means of a rotatable gear-wheel F coupled to a disc E by rods D, D<1> which are rotated into selected positions by the engagement of adjustable stop bars C<1> carried by a set of spring-returned actuators B<1> ... B<10>. The actuators comprise two groups, the odd numbers and the even numbers, corresponding to the wave ranges, and are operated by push-buttons A<1>. . . A<5> shown in a position to engage the odd number actuators. To operate the even number actuators, a carriage R supporting the push-buttons is moved to the right by means of the waverange switch V so that the push-buttons are now opposite the even number actuators. This movement also alters the station names visible through windows in the dial plate. Alternatively, the actuator assembly may be movable by the wave range switch. Manual tuning may be effected by a knob X driving disc E through a gear Z. The actuators B<1> . . . B<10> may control electric switches for effecting electrical tuning.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US445180A US2356935A (en) | 1942-05-30 | 1942-05-30 | Tuning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB564930A true GB564930A (en) | 1944-10-19 |
Family
ID=23767895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6021/43A Expired GB564930A (en) | 1942-05-30 | 1943-04-15 | Improvements in or relating to radio apparatus and tuning mechanism therefor |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2356935A (en) |
| GB (1) | GB564930A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419968A (en) * | 1944-07-26 | 1947-05-06 | Gen Electric | Push button tuner for multiband radio receivers |
| US2469189A (en) * | 1946-05-03 | 1949-05-03 | Oak Mfg Co | Preselector for radio-frequency network |
| BE477499A (en) * | 1946-10-31 | |||
| US2863043A (en) * | 1953-04-23 | 1958-12-02 | Blaupunkt Werke Gmbh | Push button radio tuning mechanism with band switching contacts |
| US2855507A (en) * | 1953-07-07 | 1958-10-07 | Blaupunkt Werke Gmbh | Radio tuning keyboard with interlocking station and band keys with independently depressable band keys |
| US3230780A (en) * | 1963-03-21 | 1966-01-25 | Motorola Inc | Automatic tuning mechanism |
| US3273407A (en) * | 1964-09-10 | 1966-09-20 | Motorola Inc | Indicator device |
| US3583241A (en) * | 1966-05-18 | 1971-06-08 | Motorola Inc | Pushbutton radio |
| US3412619A (en) * | 1967-03-01 | 1968-11-26 | Bendix Corp | Radio receiver pushbutton tuner |
| US3500788A (en) * | 1967-03-15 | 1970-03-17 | Chrysler Corp | Control unit |
| DE1616268B1 (en) * | 1968-02-22 | 1970-10-15 | Hopt Kg R & E | Tuning device for RF communications equipment, especially for television receivers |
| GB1551052A (en) * | 1976-04-21 | 1979-08-22 | Smiths Industries Ltd | Push-button mechanisms |
-
1942
- 1942-05-30 US US445180A patent/US2356935A/en not_active Expired - Lifetime
-
1943
- 1943-04-15 GB GB6021/43A patent/GB564930A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2356935A (en) | 1944-08-29 |
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