GB521817A - Improvements in or relating to push button mechanisms for tuning radio receivers - Google Patents

Improvements in or relating to push button mechanisms for tuning radio receivers

Info

Publication number
GB521817A
GB521817A GB34448/38A GB3444838A GB521817A GB 521817 A GB521817 A GB 521817A GB 34448/38 A GB34448/38 A GB 34448/38A GB 3444838 A GB3444838 A GB 3444838A GB 521817 A GB521817 A GB 521817A
Authority
GB
United Kingdom
Prior art keywords
push
button
disc
pivoted
lever
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
GB34448/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB34448/38A priority Critical patent/GB521817A/en
Priority to US306138A priority patent/US2351443A/en
Priority to DEE2340D priority patent/DE977682C/en
Priority to FR861910D priority patent/FR861910A/en
Publication of GB521817A publication Critical patent/GB521817A/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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Transmission Devices (AREA)

Abstract

521,817. Push-button mechanism. METCALFE, C., and PARRISH, H. J. Nov. 26, 1938, No. 34448. [Class 37] In a mechanically-operated push-button receiver the manual tuning means is automatically declutched while a push-button is depressed. Depression of a push-button 1 causes its associated arm 2 to contact with a pivoted vane 3 running longitudinally across the chassis and thus rotate a disc 5 fixed on the trunnions carrying the vane 3. An arm 5a on the disc 5 is connected to lever and link mechanism 6, 7 the end of the lever 7 being adjustably pivoted on a support 9. The rotor axis 16 of the tuning condensers is rotated manually by a knob 15 through friction gearing comprising a disc 12 the edge of which is gripped between the shaft 13 carrying the knob 15 and a collar 10 mounted on the reduced end 13a of the shaft 13 and pressed against the disc 12 by a spring 11. The collar 10 is connected to the lever 7 so that on rotation of the vane 3 the lever mechanism 7, 8 moves away the collar 10 from the disc 12 thus breaking the friction drive. Press-button mechanism. Depression of a push-button 1 causes a cam 17 adjustably mounted thereon to contact with a pivoted plate 18 which extends longitudinally along the chassis and is provided with slots through which the arms 2 pass. An end plate 20 is formed rigidly with the plate 18 and is pivoted to levers 22, 23, 25 connected to the rotor axis 16. Depression of a push-button thus rotates the rotor element of the condenser through by an amount depending on the inclination of the pivoted plate 18 to the corresponding faces of the cam 17 which is adjusted according to the tuning position required. Rotation of the axis 16 is transferred by means of an endless chain on the pulley 27 to another pulley carrying a pointer moving across an indicator scale. In a modified form of the apparatus (Figs. 3 and 4, not shown) the push-buttons are arranged vertically and the friction drive for manual tuning takes the form of a driving wheel making frictional contact on the inner surface of a flanged disc attached on the rotor shaft, disconnection of the drive being obtained by levers which move the driving wheel upwardly against the tension of a spring.
GB34448/38A 1938-11-26 1938-11-26 Improvements in or relating to push button mechanisms for tuning radio receivers Expired GB521817A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB34448/38A GB521817A (en) 1938-11-26 1938-11-26 Improvements in or relating to push button mechanisms for tuning radio receivers
US306138A US2351443A (en) 1938-11-26 1939-11-25 Push button mechanism for tuning radio receivers
DEE2340D DE977682C (en) 1938-11-26 1939-11-26 Push button receiver with mechanical detuning of the tuning means
FR861910D FR861910A (en) 1938-11-26 1939-11-27 Improvements to push-button mechanisms for tuning radio-receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34448/38A GB521817A (en) 1938-11-26 1938-11-26 Improvements in or relating to push button mechanisms for tuning radio receivers

Publications (1)

Publication Number Publication Date
GB521817A true GB521817A (en) 1940-05-31

Family

ID=10365784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34448/38A Expired GB521817A (en) 1938-11-26 1938-11-26 Improvements in or relating to push button mechanisms for tuning radio receivers

Country Status (4)

Country Link
US (1) US2351443A (en)
DE (1) DE977682C (en)
FR (1) FR861910A (en)
GB (1) GB521817A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503121A (en) * 1945-12-07 1950-04-04 Magnavox Co Tuning and push button control
US2573801A (en) * 1946-09-20 1951-11-06 Magnavox Co Tuning control
IT974400B (en) * 1972-12-29 1974-06-20 R L Argentec Soc MANUAL AND AUTOMATIC CONTROL SYSTEM FOR ELECTRONIC EQUIPMENT AND MORE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1704754A (en) * 1925-06-09 1929-03-12 Harry N Marvin Radio apparatus and method of operating the same
DE573987C (en) * 1928-09-06 1933-04-07 Koch & Sterzel Akt Ges Device for mechanically setting a radio receiver to multi-digit tuning values
DE550860C (en) * 1930-08-09 1932-05-21 Ideal Werke Akt Ges Fuer Draht Capacitor dial arrangement, especially for the purposes of telecommunications
DE619630C (en) * 1931-08-27 1935-10-04 Jeumont Forges Const Elec Socket connection for the unmachined ends of rigid pipes for electrical installations
US2016149A (en) * 1933-07-20 1935-10-01 Gen Electric Indicating device
US2057376A (en) * 1934-04-23 1936-10-13 Grillet Francois Joseph Regulating device for wireless receivers

Also Published As

Publication number Publication date
DE977682C (en) 1968-05-02
US2351443A (en) 1944-06-13
FR861910A (en) 1941-02-21

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