GB492092A - Improvements in or relating to the illumination of dials of instruments - Google Patents

Improvements in or relating to the illumination of dials of instruments

Info

Publication number
GB492092A
GB492092A GB34087/36A GB3408736A GB492092A GB 492092 A GB492092 A GB 492092A GB 34087/36 A GB34087/36 A GB 34087/36A GB 3408736 A GB3408736 A GB 3408736A GB 492092 A GB492092 A GB 492092A
Authority
GB
United Kingdom
Prior art keywords
lamp
frame
plate
dials
dial
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
GB34087/36A
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
Publication of GB492092A publication Critical patent/GB492092A/en
Expired legal-status Critical Current

Links

Landscapes

  • Details Of Measuring Devices (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Abstract

492,092. Indicating - apparatus. KOLLSMAN, P. Dec. 11, 1936, No. 34087. Convention date, Dec. 11, 1935. [Class 106 (iv)] Dials, illuminating.-The dial 4 of an instrument B is covered with a sight window 8 and is illuminated by an adaptor comprising a transparent plate 12 carried by a frame C with an edge adjacent an electric lamp 18, the frame being shaped to fit the front of the instrument casing and the lamp being mounted in a plug 17 removable from the front of the frame. To assist reflection within the plate and to direct rays on to the dial, the rim 25 and an external peripheral ring 26 of the plate are coated with white paint, a part of the rim adjacent the lamp being left uncoated to permit the rays to enter. The part of the frame surrounding the lamp is formed as an arcuate chamber 24, the walls of which are preferably coated with white paint.
GB34087/36A 1935-12-11 1936-12-11 Improvements in or relating to the illumination of dials of instruments Expired GB492092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492092XA 1935-12-11 1935-12-11

Publications (1)

Publication Number Publication Date
GB492092A true GB492092A (en) 1938-09-12

Family

ID=21958604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34087/36A Expired GB492092A (en) 1935-12-11 1936-12-11 Improvements in or relating to the illumination of dials of instruments

Country Status (1)

Country Link
GB (1) GB492092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614205A (en) * 1948-09-21 1952-10-14 John M Roper Illuminating device for instrument panels
GB2447936A (en) * 2007-03-28 2008-10-01 Visteon Global Tech Inc Instrument illumination system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614205A (en) * 1948-09-21 1952-10-14 John M Roper Illuminating device for instrument panels
GB2447936A (en) * 2007-03-28 2008-10-01 Visteon Global Tech Inc Instrument illumination system
GB2447936B (en) * 2007-03-28 2011-09-07 Visteon Global Tech Inc Illumination system

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