GB551761A - Tuning mechanism for wireless apparatus - Google Patents
Tuning mechanism for wireless apparatusInfo
- Publication number
- GB551761A GB551761A GB11372/41A GB1137241A GB551761A GB 551761 A GB551761 A GB 551761A GB 11372/41 A GB11372/41 A GB 11372/41A GB 1137241 A GB1137241 A GB 1137241A GB 551761 A GB551761 A GB 551761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- button
- tuning
- bar
- depression
- 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
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)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
551,761. Radio receivers. PHILCO RADIO & TELEVISION CORPORATION. Sept. 5, 1941, No. 11372. Convention date, Sept. 6, 1940. [Class 37] [Also in Group XL] A push-button tuning arrangement comprises a set of plungers 92 depression of which moves an operating bar 30 a predetermined distance according to the setting of threaded operating rods 57 which engage the edge of bar 30 and which are adjustable by means of milled wheels 91 accessible through slots in the individual pressbuttons. Bar 30 carries pins 46, 47 which engage crossed levers 34, 35 (dotted on Fig. 4) pivoted at 36, 37 the free ends of which operatively engage a bar 22 of a slidable frame 21, 22, 23 to the member 21 of which are attached by members 19, the movable cores 17 of permeability tuning coils 16. Movement of the frame 21, 22, 23 is assisted by an electromagnet 67 which is energized by a switch 72 by movement of the locking bar 59, a depression of any button, a second pair of contacts on the switch serving to mate the receiver during tuning. The central push-button is used for manual tuning and in this case the tuning knob 95 is mounted directly on the adjusting means for threaded operating rod 57. A pin 54 on link 35 abuts a cam surface 103 on a pivoted link 96 to move a pointer 99 having an index 105 movable over a scale (not shown) carried on a bracket 106. Fig. 20 shows an arrangement in which push-button 108 serves for automatic tuning and button 109 for manual tuning as previously described. A further button 110 has a knob connected by a flexible shaft 112 to a volume control 111 while the shaft is formed with a lug 114 for engaging an on and off switch 113. The arrangement is such that depression of 110 de-energizes the set. Operation of another button releases 110 to energize the set and allow 110 to be used for volume control.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US551761XA | 1940-09-06 | 1940-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB551761A true GB551761A (en) | 1943-03-09 |
Family
ID=21996131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11372/41A Expired GB551761A (en) | 1940-09-06 | 1941-09-05 | Tuning mechanism for wireless apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB551761A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2854864A1 (en) * | 1977-12-19 | 1979-06-21 | Clarion Co Ltd | PUSH KEY TUNER |
-
1941
- 1941-09-05 GB GB11372/41A patent/GB551761A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2854864A1 (en) * | 1977-12-19 | 1979-06-21 | Clarion Co Ltd | PUSH KEY TUNER |
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