GB713706A - Improvements in or relating to light diffusing screens - Google Patents
Improvements in or relating to light diffusing screensInfo
- Publication number
- GB713706A GB713706A GB12477/52A GB1247752A GB713706A GB 713706 A GB713706 A GB 713706A GB 12477/52 A GB12477/52 A GB 12477/52A GB 1247752 A GB1247752 A GB 1247752A GB 713706 A GB713706 A GB 713706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- panels
- strip
- pins
- flanges
- holes
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
713,706. Light screens. KILEMNIE, M. May 16, 1952 [May 28, 1951; Oct. 25, 1951], No. 12477/52. Class 75 (2) A light diffusing screen comprises at least two similar light transmitting strips of moulded synthetic plastic material each strip consisting of separate panel elements connected one to the other so that adjacent panel elements can be brought to various angular positions about an axis transverse to the longitudinal extent of the strip and has means for supporting the strips side by side so that the panels of one strip are aligned with corresponding panels of a neighbouring strip in order that the assembled strips constitute a screen which appears to be continuous. The strip is formed by a number of arcuate panels one of which, Fig. 1, has holes 5 formed in discs 4 at the end of flanges 2, 3, to engage pins 12 on the flanges 10, 11 of another panel, Fig. 2, when sprung thereover. Alternatively the strip may be formed of a number of panels provided with hooks 24, Fig. 5, at one end and pins 23 at the other. Shoulders 21a, 22a prevent the hooks 24 moving out of engagement with the pins 23 of an adjacent panel. The panels, Figs. 1 and 2, may move freely relatively to one another to hang in a catenary shape, Fig. 4, or they may be locked in position by fingers 30, Fig. 6, formed on the periphery of the disc 4 and engaging teeth 31 formed on the flange 11 or alternatively, Fig. 7 (not shown), by pins or rivets passed through holes in the disc 4 and flange 11, or by non-circular pegs 12 engaging non-circular holes 5. The panels have narrow flanges 7, 8, Fig. 1, or 18, 19, Fig. 5, formed along their edges and are provided with protrusions or indentations to render them translucent. The panels may be made of polystyrene or of a lumiscent material such as a flourescent plastic material. The strips, Fig. 4, may be joined together by pins or rivets passed through holes 6. The ends of the screen may be closed by leaves of material Fig. 3 (not shown) attached on the flanges 2 and 3 of the end panels and arranged to move freely over one another when the strip is deflected about the pivotal axes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR713706X | 1951-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB713706A true GB713706A (en) | 1954-08-18 |
Family
ID=9084414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12477/52A Expired GB713706A (en) | 1951-05-28 | 1952-05-16 | Improvements in or relating to light diffusing screens |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB713706A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575701A (en) * | 1994-04-22 | 1996-11-19 | Orda Industries (1969) Limited | Construction apparatus |
-
1952
- 1952-05-16 GB GB12477/52A patent/GB713706A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5575701A (en) * | 1994-04-22 | 1996-11-19 | Orda Industries (1969) Limited | Construction apparatus |
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