GB312105A - Devices relating to the utilizing of coloured and opaque liquids in illumination - Google Patents
Devices relating to the utilizing of coloured and opaque liquids in illuminationInfo
- Publication number
- GB312105A GB312105A GB449228A GB449228A GB312105A GB 312105 A GB312105 A GB 312105A GB 449228 A GB449228 A GB 449228A GB 449228 A GB449228 A GB 449228A GB 312105 A GB312105 A GB 312105A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- tubes
- connections
- tap
- source
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
- F21V9/12—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light with liquid-filled chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
312,105. Sharma, D. N. Feb. 13, 1928. Anti-dazzle screens.-A light screening device for use on a vehicle windscreen comprises a chamber adapted to be filled with and emptied of a coloured or opaque liquid by means of a source of pressure or vacuum under the control of a four-way tap. In the form shown in the Figure, liquid from a container w is injected into and withdrawn from a chamber b by means of a pressure or suction source v, such as the intake manifold of the engine, under the control of a four-way tap t. The source v is fitted with a cut-off tap i and the chamber b is fitted with cut-off valves a, c and is joined by a tube d to the container w. The tap t has four connections 1 - - 4 arranged so that when one pair (1, 3) is open, the other pair (2, 4) is closed, and in a neutral position all four connections are closed. Tubes e, h from the source v pass through connections 1, 4 to the chamber b and container w. Tubes f, g, open to the atmosphere, pass through connections 2, 3 to the tubes e, h, or directly to the chamber b and container w. The tubes d, h, may be fitted with removable flexible connections x to allow of the substitution of other containers with differently coloured or opaque liquids. The tap t may be of the rotatable body type, or one in which the body part is pushed in against the action of a spring. The chamber b may be formed by two flat or curved glass, or other transparent, plates separated by thin peripheral washers, it may be cast as a single unit, or it may be formed by bending thin glass tubes into any desired shape. Large chambers may be sub-divided into plurality of smaller chambers with separate inlets and outlets joined to the tubes leading to the four-way tap. The Provisional Specification also states that the source v may be a vacuum pump, and that the smaller chambers, into which a large chamber may be subdivided, may be fitted with a common inlet and outlet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB449228A GB312105A (en) | 1928-02-13 | 1928-02-13 | Devices relating to the utilizing of coloured and opaque liquids in illumination |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB449228A GB312105A (en) | 1928-02-13 | 1928-02-13 | Devices relating to the utilizing of coloured and opaque liquids in illumination |
Publications (1)
Publication Number | Publication Date |
---|---|
GB312105A true GB312105A (en) | 1929-05-13 |
Family
ID=9778194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB449228A Expired GB312105A (en) | 1928-02-13 | 1928-02-13 | Devices relating to the utilizing of coloured and opaque liquids in illumination |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB312105A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4144663A (en) * | 1974-11-06 | 1979-03-20 | Norlux A/S | Switchable sign |
WO2002101290A1 (en) * | 2001-06-13 | 2002-12-19 | Burgio Joseph T | Apparatus for limited-heat curing of photosensitive coatings and inks |
-
1928
- 1928-02-13 GB GB449228A patent/GB312105A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4144663A (en) * | 1974-11-06 | 1979-03-20 | Norlux A/S | Switchable sign |
WO2002101290A1 (en) * | 2001-06-13 | 2002-12-19 | Burgio Joseph T | Apparatus for limited-heat curing of photosensitive coatings and inks |
US6984830B2 (en) | 2001-06-13 | 2006-01-10 | Burgio Joseph T | Apparatus for limited-heat curing of photosensitive coatings and inks |
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