GB510360A - Improvements in or relating to tuning means for wireless receiving apparatus - Google Patents
Improvements in or relating to tuning means for wireless receiving apparatusInfo
- Publication number
- GB510360A GB510360A GB313738A GB313738A GB510360A GB 510360 A GB510360 A GB 510360A GB 313738 A GB313738 A GB 313738A GB 313738 A GB313738 A GB 313738A GB 510360 A GB510360 A GB 510360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- button
- tuning
- pin
- press
- shaft
- 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
- H03J5/04—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
- Structure Of Receivers (AREA)
- Transceivers (AREA)
- Mechanical Control Devices (AREA)
Abstract
510,360. Adjusting wireless apparatus. GENERAL ELECTRIC CO., Ltd., BLOCH, A., and WELLS. G. M. Feb. 1, 1938. No. 3137. [Class 37] [Also in Group XL] In a wireless receiver having mechanical press-button tuning, the final setting of the tuning shaft is accurately determined by secondary locating means, automatically brought into operation by mechanical means before the operating member reaches the end of its travel. Thus in Fig. 1, the member 3, actuated by the press-button 10, carries a pin 8 engaging a heart-shaped internal cam in a disc 2 secured to the tuning spindle 1. The final locating means is a narrow slot 14 into which the pin 8 drops to determine exactly the setting of shaft 1. The cam may be engaged by a roller, mounted on the pin 8, until close to the slot 14 where the cam has a stepped portion so that the roller rides clear and the pin 8 itself completes the final positioning. In the modification of Fig. 4 the hinged member 3 actuates the uppermost of two sliding racks 18, 19 engaging a pinion 17 on the tuning shaft 1, the positioning being completed when 3 engages both members 20 and 21. Just before this point is reached, lever 3 rotates lever 23 to engage 25 with the slot 26 in member 27 which is integral with the pinion 17. The final position of shaft 1 is thereby accurately determined. In all cases, operation of a press-button operates the wave range switch to the corresponding waveband, if such band is not already switched in, by means of projections on the press-button shafts, engaging one or other side of a rectangular frame rotatably mounted and coupled to the wave-range switch spindle, Fig. 5 (not shown). The Provisional Specification describes also a push-button control in which the lever operated by the button is coupled to the tuning shaft by a pair of cords, two ends being secured to the lever and two to one point on the periphery of the spindle. Specification 405,716 and U.S.A. Specification 1,846,289 are referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB313738A GB510360A (en) | 1938-02-01 | 1938-02-01 | Improvements in or relating to tuning means for wireless receiving apparatus |
FR849695D FR849695A (en) | 1938-02-01 | 1939-01-31 | Radio receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB313738A GB510360A (en) | 1938-02-01 | 1938-02-01 | Improvements in or relating to tuning means for wireless receiving apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB510360A true GB510360A (en) | 1939-08-01 |
Family
ID=9752624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB313738A Expired GB510360A (en) | 1938-02-01 | 1938-02-01 | Improvements in or relating to tuning means for wireless receiving apparatus |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR849695A (en) |
GB (1) | GB510360A (en) |
-
1938
- 1938-02-01 GB GB313738A patent/GB510360A/en not_active Expired
-
1939
- 1939-01-31 FR FR849695D patent/FR849695A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR849695A (en) | 1939-11-29 |
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