GB338903A - Improvements in or relating to wireless receiving apparatus - Google Patents

Improvements in or relating to wireless receiving apparatus

Info

Publication number
GB338903A
GB338903A GB25768/29A GB2576829A GB338903A GB 338903 A GB338903 A GB 338903A GB 25768/29 A GB25768/29 A GB 25768/29A GB 2576829 A GB2576829 A GB 2576829A GB 338903 A GB338903 A GB 338903A
Authority
GB
United Kingdom
Prior art keywords
indicating
vane
elements
carried
relating
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
GB25768/29A
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
Priority claimed from DER75350D external-priority patent/DE496561C/en
Application filed by Individual filed Critical Individual
Publication of GB338903A publication Critical patent/GB338903A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
    • 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
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H03J1/044—Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination
    • 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
    • H03J1/063—Special arrangements taken in correlation with the wear; Suppressing backlash; Locking in a desired position
    • 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
    • H03J1/08—Toothed-gear drive; Worm drive
    • 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
    • H03J1/10—Rope drive; Chain drive
    • 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
    • H03J1/12—Friction drive

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

338,903. Routin, J. L. March 7, 1929, [Convention date]. Addition to 316,985. Wireless tuning-apparatus, indicating devices for.-The indicating-elements of the ratio tuning devices claimed in the parent Specification have the vane 1, inscribed with wavelength scales &c. and covering either the scale 12 or 13, detachably mounted in upper and lower seatings 9, 5 engaged by bearing members 3, 4 carried by the vane, the upper seating 9 being biased axially by a leaf spring 11. The charts with calibrated curves a, a<1> and A, A<1> are carried by the rotatable members of the condensers, and switches 7, 8 are provided for changing wavelength ranges. The housing 16 is provided with a slidable translucent window 17 illuminated by a lamp 18 for lighting the indicating-elements and excluding dust.
GB25768/29A 1928-08-07 1929-08-23 Improvements in or relating to wireless receiving apparatus Expired GB338903A (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
DER75350D DE496561C (en) 1928-08-07 1928-08-07 Adjustment device for radio receiver
DER77427D DE505624C (en) 1928-08-07 1929-03-07 Adjustment device for radio receiver
FR37941T 1929-09-18
FR38235T 1929-10-03
FR38496T 1929-10-07
FR38497T 1929-12-05
FR38512T 1929-12-20
FR38653T 1930-01-04
FR38997T 1930-03-26
FR39315T 1930-05-09
FR39947T 1930-07-24

Publications (1)

Publication Number Publication Date
GB338903A true GB338903A (en) 1930-11-24

Family

ID=62295846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25768/29A Expired GB338903A (en) 1928-08-07 1929-08-23 Improvements in or relating to wireless receiving apparatus

Country Status (5)

Country Link
BE (1) BE362108A (en)
CH (1) CH148922A (en)
DE (1) DE505624C (en)
FR (10) FR677639A (en)
GB (1) GB338903A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104611B (en) * 1956-09-21 1961-04-13 Nuernberger Schwachstrom Bauel Variable capacitor

Also Published As

Publication number Publication date
DE505624C (en) 1930-08-21
CH148922A (en) 1931-08-15
FR38235E (en) 1931-04-24
FR38496E (en) 1931-06-06
BE362108A (en) 1929-08-31
FR38512E (en) 1931-06-13
FR38497E (en) 1931-06-06
FR38997E (en) 1931-08-10
FR677639A (en) 1930-03-12
FR39315E (en) 1931-10-12
FR38653E (en) 1931-06-26
FR39947E (en) 1932-03-19
FR37941E (en) 1931-02-07

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