GB510360A - Improvements in or relating to tuning means for wireless receiving apparatus - Google Patents

Improvements in or relating to tuning means for wireless receiving apparatus

Info

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
Application number
GB313738A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB313738A priority Critical patent/GB510360A/en
Priority to FR849695D priority patent/FR849695A/en
Publication of GB510360A publication Critical patent/GB510360A/en
Expired legal-status Critical Current

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.
GB313738A 1938-02-01 1938-02-01 Improvements in or relating to tuning means for wireless receiving apparatus Expired GB510360A (en)

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)

Also Published As

Publication number Publication date
FR849695A (en) 1939-11-29

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