GB653672A - Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays - Google Patents

Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays

Info

Publication number
GB653672A
GB653672A GB1855248A GB1855248A GB653672A GB 653672 A GB653672 A GB 653672A GB 1855248 A GB1855248 A GB 1855248A GB 1855248 A GB1855248 A GB 1855248A GB 653672 A GB653672 A GB 653672A
Authority
GB
United Kingdom
Prior art keywords
dial plate
markings
reflectors
invisible light
ultra
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
GB1855248A
Inventor
Victor James Samuel Russell
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England Ltd
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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB1855248A priority Critical patent/GB653672A/en
Publication of GB653672A publication Critical patent/GB653672A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/22—Design features of general application for visual indication of the result of count on counting mechanisms, e.g. by window with magnifying lens

Abstract

653,672. Fluorescent scales. SMITH & SONS (ENGLAND), Ltd., S. July 9, 1948, No. 18552. [Class 39 (i)] In an instrument or display device having markings which are rendered fluorescent by a source of invisible light radiations disposed in front of and to one side of the markings, one or more reflectors are so located as to direct the invisible light rays on to the front of the markings without their being obscured to view by the reflectors. In the speedometer 10 shown, the dial plate 11 is marked with graduations near its outer periphery indicating miles per hour, a pointer 12 moving over these to indicate the speed of the vehicle. Mileage recording-drums 13 carry figures which are visible through windows 14, these figures and those on the dial-plate 11 being coated with a composition which is rendered fluorescent by ultraviolet rays. Two ultra-violet lamps 17 are mounted on the instrument board 8. The dial plate is slit and bent outwardly at 18 at such an angle as to reflect the ultra-violet rays from the lamp 17 rearwardly through the window 14 on to the figures on the adjacent drum 13. The dial plate 11 is formed from metal which is polished on the back face, at least along those parts constituting the reflectors 18, while the front face is non- reflecting. The dial plate is also slit and bent outwardly to form flaps 19 making only a small angle with the dial plate so as to obscure to view the slots 20 formed beneath them but permit ultra-violet rays from the adjacent lamps 17 to pass through windows 21 in the casing 15 and through the slots 20 on to the drum 13. The flaps 19 and reflectors 18 may alternatively be formed separately and secured to the dial plate.
GB1855248A 1949-06-02 1949-06-02 Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays Expired GB653672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1855248A GB653672A (en) 1949-06-02 1949-06-02 Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1855248A GB653672A (en) 1949-06-02 1949-06-02 Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays

Publications (1)

Publication Number Publication Date
GB653672A true GB653672A (en) 1951-05-23

Family

ID=10114393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1855248A Expired GB653672A (en) 1949-06-02 1949-06-02 Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays

Country Status (1)

Country Link
GB (1) GB653672A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184974B (en) * 1960-07-08 1965-01-07 T A M Sa Pour Tous App S Mecan Device for illuminating the numeric scrolls of a display mechanism, which are arranged directly behind a protective wall of the housing and can be observed through viewing openings
US4536656A (en) * 1982-04-02 1985-08-20 Nippon Soken, Inc. Phosphor indication device
US4970400A (en) * 1987-10-02 1990-11-13 Yazaki Corporation Illuminated meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184974B (en) * 1960-07-08 1965-01-07 T A M Sa Pour Tous App S Mecan Device for illuminating the numeric scrolls of a display mechanism, which are arranged directly behind a protective wall of the housing and can be observed through viewing openings
US4536656A (en) * 1982-04-02 1985-08-20 Nippon Soken, Inc. Phosphor indication device
US4970400A (en) * 1987-10-02 1990-11-13 Yazaki Corporation Illuminated meter

Similar Documents

Publication Publication Date Title
US2108342A (en) Dial for indicating instruments
US2561508A (en) Speedometer
US2428792A (en) Illumination system
US2454280A (en) Illuminated indicator using light polarizing elements
GB1190640A (en) Translucent Instrument Dial Means.
US2317182A (en) Indicating instrument
GB653672A (en) Improvements in or relating to instruments or display devices having markings rendered fluorescent by invisible light rays
US2520028A (en) Maximum indicating instrument
US2563537A (en) Illuminated instrument face
US1757493A (en) Dial illumination
US1942343A (en) Dial for various apparatus
US2623182A (en) Instrument or display device having markings rendered fluorescent by invisible light rays
US2861537A (en) Illuminated instrument
GB719398A (en) Improvements in or relating to measuring or indicating instruments
US2793605A (en) Continuous vivid arc instrument
GB482595A (en) Improvements in or relating to the illumination of dials of instruments and other surfaces
GB492258A (en) Improvements in or relating to the illumination of dials of instruments
GB468701A (en) Improvements relating to indicating instruments
FR2417084A1 (en) Analogue measuring instrument with rectilinear scale - utilises optical system with skirt on galvanometer movement intercepting light
SU463862A1 (en) Scale device
US2143174A (en) Instrument lighting
GB1279155A (en) Electrical indicating instruments
GB538066A (en) Improvements in or relating to pyrometers and other measuring instruments of precision
JPH0540417Y2 (en)
GB1181227A (en) Electric Meters