GB543251A - Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations - Google Patents

Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations

Info

Publication number
GB543251A
GB543251A GB766840A GB766840A GB543251A GB 543251 A GB543251 A GB 543251A GB 766840 A GB766840 A GB 766840A GB 766840 A GB766840 A GB 766840A GB 543251 A GB543251 A GB 543251A
Authority
GB
United Kingdom
Prior art keywords
spindle
tuning
stirrup
push button
screw
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
GB766840A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB766840A priority Critical patent/GB543251A/en
Publication of GB543251A publication Critical patent/GB543251A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous 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
    • H03J5/02Discontinuous 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
    • H03J5/04Discontinuous 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
    • H03J5/12Settings 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

543,251. Push button tuning mechanism. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). April 29, 1940, No. 7668. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 4, 1940.] [Class 40 (v)] [Also in Group XXXVI] Push button tuning is effected by a set of keys such as 1 comprising side plates 2, 3 mounted on a bush 4 rotatable about a fixed hollow shaft 5. Depression of the key causes a stirrup 31, 32, 33 to turn a spindle 28 to move a slidable electrode tuning condenser 38 by an amount determined by the setting of a screw 41 which engages the part 33 of the stirrup. A hooked extension 19 of side plate 3 of the kty cooperates with a spring-controlled locking bar 21 to hold the key in the depressed position. Movement of the spindle 28 also serves to operate a tuning scale pointer through links 29, 30. A two position wave-range switch 39, 40 is operated through spindle 25 and plates 26, 27 by the engagement of rod 23, or 24 by hook 8 or projection 9 according to the setting relative to side plate 3 of a member 7 by means of a screw 17.
GB766840A 1940-04-29 1940-04-29 Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations Expired GB543251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB766840A GB543251A (en) 1940-04-29 1940-04-29 Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB766840A GB543251A (en) 1940-04-29 1940-04-29 Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations

Publications (1)

Publication Number Publication Date
GB543251A true GB543251A (en) 1942-02-17

Family

ID=9837521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB766840A Expired GB543251A (en) 1940-04-29 1940-04-29 Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations

Country Status (1)

Country Link
GB (1) GB543251A (en)

Similar Documents

Publication Publication Date Title
GB1295905A (en)
GB543251A (en) Improvements in or relating to radio-receivers adapted to be automatically tuned to a plurality of predetermined stations
GB632379A (en) Improvements in or relating to keyboards, especially for electrically-controlled accounting or card-punching machines
GB624968A (en) Tuning mechanism for radio apparatus
GB625068A (en) Improvements in push button tuning mechanism for radio receivers
GB512121A (en) An electro-mechanical frequency compensating device for wireless transmitting and receiving apparatus
GB530578A (en) Improvements relating to adjustment devices for radio receivers
GB364271A (en) Improvements in electric hot-plates
GB551761A (en) Tuning mechanism for wireless apparatus
GB742939A (en) Improvements in the press button tuning of radio receivers
GB543252A (en) Improvements in radio-receiving sets comprising a wave-range switch
GB525405A (en) Tuning device for radio receivers
GB1292650A (en) A numeral setting mechanism for a calculating machine
GB744320A (en) Improved lever control means for cable-operated mechanism
GB814583A (en) Improvements in or relating to electric switch actuating mechanisms
GB524905A (en) Improvements in or relating to electrical switches for battery operated devices
GB899264A (en) Keyboard perforator and counter apparatus
GB566177A (en) Improvements relating to rotary control devices
GB510186A (en) Improvements in radio receivers
GB511915A (en) Improvements in tuning mechanism for radio-receivers
GB912171A (en) Improvements in door locking indicator means
GB597585A (en) Improvements in or relating to push button tuning devices for radio receivers
GB471806A (en) Improvements in and relating to wireless receiving apparatus
GB525611A (en) Improvements in or relating to press button tuned radio receivers
GB522248A (en) Improvements relating to the tuning of radio receivers