US1968234A - Radio dial illumination - Google Patents

Radio dial illumination Download PDF

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Publication number
US1968234A
US1968234A US617305A US61730532A US1968234A US 1968234 A US1968234 A US 1968234A US 617305 A US617305 A US 617305A US 61730532 A US61730532 A US 61730532A US 1968234 A US1968234 A US 1968234A
Authority
US
United States
Prior art keywords
holder
socket
lamp
radio
dial illumination
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 - Lifetime
Application number
US617305A
Other languages
English (en)
Inventor
Antonius Hubertus Victor V Lyf
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Application granted granted Critical
Publication of US1968234A publication Critical patent/US1968234A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H03J1/044—Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination

Definitions

  • This invention has reference to a device for illuminating housed adjustable portions of wireless receiving or transmitting installations.
  • the lamp-itself is not visible but is arranged so that the light shines. on the parts to be illuminated.
  • the lamp is'usually secured in a holder which adjoins the portions to be illumil6 nated, and is fixed to the frame of'the. senor any,"
  • the lamp with the holder is, so to say,'entirely locked in by 20 the surrounding portions placed in position during the further mounting operation.- It'is often necessary to detach portions from the'set in order to permit of the lamp being withdrawnirom-the holder.
  • the holder may be inserted in the front plate and 90 frame of the set orany portionconnected there with and'readily accgssible from without-so, as permit of the holder being withdrawn without the use of any mechanical means, such as screw! drivers or the like.
  • the holder is preierablyprovided The dimensions 0! the holder are I lamp may be intro well; known manner method of operation will best be understood by reference to the'iollowing description taken in connection with the drawing in which I have in-- dicated diagrammatically one circuit organiza- 60 'tion whereby my invention may be carried into effect.
  • Fig. 1 shows, partly in bodying, the invention
  • Fig. 2 is an isometric view of the lamp holder
  • Fig. 3 is a bottom view of the holder of Fig. 2'.
  • the scale I of a section, a receiver em- I condenser .2 secured to thefi'ame 3 of aradio set is illuminated-by a small'lamp I the dark the scale is readily visible through the 8 so. that even in window” 11
  • the lampj8' is fitted in a holder 6 according to the invention.
  • This holder willbe “more fully described with reference to Figs. 2 and 3.
  • the holder is inserted by-pins 9 into contact sockets 10 secured .to tl ew middle plate 4 0i the frame of thesetr'.
  • the current is suppliedto' the said sockets"by,;meansi..of;.a cable 1 2.1 '-Fo'r-the I sake of clearness,the-flattachmentof the sockets;
  • A' member ,7 also se'culejd .to the. plate i serves as aiinding edge for inserting the holder; .In theset illustrated'the holder is put into position by. way of the aperture, 313' offthe rearl .plate' through' thespace'
  • the space dis-readily ac- 35 I cessible.j-,.It may have housedi'nitacon'e of a loudspeaker'i i and a few tubes 15 which,;how-
  • the handle may be, givemior example, an elegant shape.
  • the similarlybe connected to ttachment of the pins 9 to the member 1'1 may-be different, depending on the mawe point or attachmentiorthe holder, which is iz-ie s d o the me b fpre'ierably-situated in therearplateorjthe' npper.
  • An illuminating arrangement adapted for use with a radio indicator dial arranged to be visible through an opening in a radio receiver panel, said arrangement including a lamp socket provided with a holder, and means provided hehind the panel, and on the socket, for positively disposing the socket in dial illuminating position and permitting the removal of the socket when said holder is moved in socket removing direction, said means consisting of at least two contact pins, conductively connected to said socket, and disposed in parallel relation with each other, said pins extending parallel to, and in the same direction as, the said socket.
  • An illuminating arrangement adapted for use with a radio indicator dial arranged to be visible through an opening in a radio receiver panel, said arrangement including a lamp socket provided with a holder, and means provided behind the panel, and on the socket, for positively disposing the socket in dial illuminating position and permitting the removal of the socket when said holder is moved in socket removing direction, said means consisting of at least two contact pins, conductively connected to said socket, and disposed in parallel relation with each other, said pins extending parallel to, and in the same direction as, the said socket, and at least two finding edges disposed adjacent said holder when the latter is in dial illuminating position.
  • An illuminating arrangement adapted for use with a radio indicator dial arranged to be visible through an opening in a radio receiver panel, said arrangement including a lamp socket provided with a holder, and means provided behind the panel, and on the socket, for positively disposing the socket in dial illuminating position and permitting the removal of the socket when said' holder is moved in socket removing direction, said means consisting of at least two contact pins, conductively connected to said socket, and disposed in parallel relation with each other, said contact pins projecting from one side of said holder, adjacent said socket, said pins extending parallel to, and in the same direction as, the socket, and being of a length substantially equal to that of the socket.

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  • Fastening Of Light Sources Or Lamp Holders (AREA)
US617305A 1931-08-27 1932-06-15 Radio dial illumination Expired - Lifetime US1968234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1968234X 1931-08-27

Publications (1)

Publication Number Publication Date
US1968234A true US1968234A (en) 1934-07-31

Family

ID=19873393

Family Applications (1)

Application Number Title Priority Date Filing Date
US617305A Expired - Lifetime US1968234A (en) 1931-08-27 1932-06-15 Radio dial illumination

Country Status (2)

Country Link
US (1) US1968234A (is")
NL (1) NL36933C (is")

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576583A (en) * 1948-03-30 1951-11-27 Burlington Instr Company Detachable lamp assembly for illuminating instruments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576583A (en) * 1948-03-30 1951-11-27 Burlington Instr Company Detachable lamp assembly for illuminating instruments

Also Published As

Publication number Publication date
NL36933C (is")

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