GB521183A - Improvements in radio-receiving sets - Google Patents

Improvements in radio-receiving sets

Info

Publication number
GB521183A
GB521183A GB16482/39A GB1648239A GB521183A GB 521183 A GB521183 A GB 521183A GB 16482/39 A GB16482/39 A GB 16482/39A GB 1648239 A GB1648239 A GB 1648239A GB 521183 A GB521183 A GB 521183A
Authority
GB
United Kingdom
Prior art keywords
condenser
spring
june
stop
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
GB16482/39A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB521183A publication Critical patent/GB521183A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/066—Constructional details regarding potentiometric setting of voltage or current variable reactances

Landscapes

  • Mechanical Control Devices (AREA)
  • Transmitters (AREA)

Abstract

521,183. Adjusting wireless apparatus. PHILIPS LAMPS, Ltd. June 5, 1939, No. 16482. Convention date, June 8, 1938. [Class 37] The movements of station selecting keys or their equivalents are transmitted to a tuning condenser through a spring. The shaft 1 of the condenser 2 is urged in one direction by spring 15 and rotated in the other direction by pinion 3 and sector 4 under the influence of spring 8 when the member 6, which is free upon the shaft 5, is depressed to a determined amount by one of the buttons 7. Movement of the condenser is damped by the dashpot 13, and continues until the stop 9 comes into contact with the member 6. Due to the presence of this stop and a preliminary tension in the spring 8, the correct position of the condenser, dependent upon the position of the keys 7, is assured. The application of the invention to a three-section gang condenser of the slidableelectrode form is also described, Fig. 2 (not shown).
GB16482/39A 1938-06-08 1939-06-05 Improvements in radio-receiving sets Expired GB521183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL212536X 1938-06-08

Publications (1)

Publication Number Publication Date
GB521183A true GB521183A (en) 1940-05-14

Family

ID=19778895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16482/39A Expired GB521183A (en) 1938-06-08 1939-06-05 Improvements in radio-receiving sets

Country Status (6)

Country Link
US (1) US2290644A (en)
BE (1) BE434733A (en)
CH (1) CH212536A (en)
DE (1) DE717159C (en)
FR (1) FR855803A (en)
GB (1) GB521183A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951820C (en) * 1952-06-12 1956-11-08 Blaupunkt Werke G M B H Zweign Pushbutton arrangement for communication devices
JPS5847550Y2 (en) * 1977-03-17 1983-10-29 ソニー株式会社 Mode switching device in recording/playback equipment

Also Published As

Publication number Publication date
DE717159C (en) 1942-02-07
BE434733A (en)
US2290644A (en) 1942-07-21
FR855803A (en) 1940-05-21
CH212536A (en) 1940-11-30

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