US2374161A - Lamp shading device - Google Patents
Lamp shading device Download PDFInfo
- Publication number
- US2374161A US2374161A US509720A US50972043A US2374161A US 2374161 A US2374161 A US 2374161A US 509720 A US509720 A US 509720A US 50972043 A US50972043 A US 50972043A US 2374161 A US2374161 A US 2374161A
- Authority
- US
- United States
- Prior art keywords
- light
- shade
- tube
- lamp
- shading device
- 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
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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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
- F21V11/12—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of slot type
Definitions
- My invention relates to a novel light shade provided with means adjustable as a dial whereb a light pattern may be controlled within definite predetermined dimensions.
- the electric light socket which is mounted at one end of the casing I may be of conventional design as illustrated at 3.
- a fluorescent tube 4 hasterminal contacts 5 at the end adjacent the socket 3, and a bracket 6 carrying the return electric wire supports the connector I for the outer end of the fluorescent tube.
- a telescoping casing 8 having a knurled end 9, adapted to provide a simple means for adjusting the light pattern.
- the inner casing 8 has an opening ID of irregular shape extending from a slot II of restricted dimensions to a widely opened part I2.
- Another use is in the matter of controlling the amount of light to be used for illuminating a picture.
- the essential elements of my invention involve telescoping tubes with openings in the tubes,
- the inner tube with the larger irregular shaped opening may be telescoped on the outside of the tube which holds the light socket, and the regular opening 2 may be formed inthe tube 8 and the irregular opening I2 may be formed'in the tube I.
- the dimensions of the shade may be varied in accordance with the particular type of use for which the shade is to be put.
- the type of fluorescent tube ordinarily in use for house lighting is one inch or more in diameter, so that for such type of tube the shade will necessarily have to have a diameter larger than that of the tube.
- Various types of illuminating bulbs may be used, such as the ordinary electric light bulb. With such a light bulb it will be desirable to arrange provided by means of holes in the end pieces.
- Electric light bulbs ordinarily give off heat so that while ventilation is required in connection with a shade for anelectric light bulb, such ventilation is not necessary in connection with fluorescent tubes which do not heat up sufliciently
- the telescoping tubes shall have a frictional fit one within the other, but it will be obvious that the principle of operation will 1 be the same whether the telescoping tubes have form the shade may claim as new and desire to secure by Letter Patent is:
- a lamp shading device comprising an outer tubular member having a slotted portion extending substantially lengthwise therein, an inner tubular member having a telescoping fit within the outer member and also having a slotted portion extending in a triangular arrangement, the base of the triangle having a length equivalent to that
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
April 24, 1945.
c. w. BELDEN v LAMP SHADING DEVICE I Fild Nov. 10, 1943 I I x I CHFIFZLES lV. 551.05,
Y INVENTOR. M q M Patented Apr. 24, 1945 7 LAMP SHADIN G DEVICE Charles W. Belden, Cincinnati, Ohio, assignor to The Kemper-Thomas Company, Cincinnati, Ohio, a corporation of Ohio Application November 10, 1943, Serial No. 509,72
1 Claim.
My invention relates to a novel light shade provided with means adjustable as a dial whereb a light pattern may be controlled within definite predetermined dimensions.
In the art there are many different types of electric light shades of difierent shapes and sizes calculated to control the rays of light which come from the lamp source, to a certain pattern.
It is the object of my invention to provide a lamp shade formed from telescoped cylindrical shades with a variable opening in an inner shade adapted to register with a fixed opening in anv outer shade whereby a light pattern of specifically controlled dimensions may be simply and effec-.
tively determined. 7
The above objects and other objects to which reference will be made in the ensuing specification, I accomplish by that certain combination opening 2.
The electric light socket which is mounted at one end of the casing I, may be of conventional design as illustrated at 3. A fluorescent tube 4 hasterminal contacts 5 at the end adjacent the socket 3, and a bracket 6 carrying the return electric wire supports the connector I for the outer end of the fluorescent tube.
- Within the tubular casing i there is a telescoping casing 8 having a knurled end 9, adapted to provide a simple means for adjusting the light pattern. The inner casing 8 has an opening ID of irregular shape extending from a slot II of restricted dimensions to a widely opened part I2.
Referring to Fig. 2, it will be observed that the light pattern is controlled by the area of the space a, whereas in Fig. 1, the knurled end 9 having been rotated slightly, the light pattern is controlled by the space indicated at b.
As a bed lamp shade the advantage will be readily apparent. Where there are two occupants of a bed, one of the occupants desiring to read Without disturbing the other who wishes to sleep, can so arrange the shade that only suffifor methods of ventilation which can be be easily cient light is rmitted to be reflected out from the tube to illuminate the page of the book.
Another use is in the matter of controlling the amount of light to be used for illuminating a picture.
While I have illustrated only one arrangement of registering openings, which will permit the control of the light pattern, it will be obvious that different arrangements of cut-out portions in the telescoping tubes will permit various controls of the pattern of light.
The essential elements of my invention involve telescoping tubes with openings in the tubes,
which by the turning of one of the tubes with respect to the other, can be brought into a desired degree of registry. Y
I have shown the inner tube with the larger irregular shaped opening, but it will be obvious that the inner tube with the irregular opening may be telescoped on the outside of the tube which holds the light socket, and the regular opening 2 may be formed inthe tube 8 and the irregular opening I2 may be formed'in the tube I. The dimensions of the shademay be varied in accordance with the particular type of use for which the shade is to be put. The type of fluorescent tube ordinarily in use for house lighting is one inch or more in diameter, so that for such type of tube the shade will necessarily have to have a diameter larger than that of the tube. Various types of illuminating bulbs may be used, such as the ordinary electric light bulb. With such a light bulb it will be desirable to arrange provided by means of holes in the end pieces.
Electric light bulbs ordinarily give off heat so that while ventilation is required in connection with a shade for anelectric light bulb, such ventilation is not necessary in connection with fluorescent tubes which do not heat up sufliciently I contemplate that the telescoping tubes shall have a frictional fit one within the other, but it will be obvious that the principle of operation will 1 be the same whether the telescoping tubes have form the shade may claim as new and desire to secure by Letter Patent is:
A lamp shading device comprising an outer tubular member having a slotted portion extending substantially lengthwise therein, an inner tubular member having a telescoping fit within the outer member and also having a slotted portion extending in a triangular arrangement, the base of the triangle having a length equivalent to that
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US509720A US2374161A (en) | 1943-11-10 | 1943-11-10 | Lamp shading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US509720A US2374161A (en) | 1943-11-10 | 1943-11-10 | Lamp shading device |
Publications (1)
Publication Number | Publication Date |
---|---|
US2374161A true US2374161A (en) | 1945-04-24 |
Family
ID=24027831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US509720A Expired - Lifetime US2374161A (en) | 1943-11-10 | 1943-11-10 | Lamp shading device |
Country Status (1)
Country | Link |
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US (1) | US2374161A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488666A (en) * | 1946-11-12 | 1949-11-22 | Herst Edward | Reading lamp |
US2524638A (en) * | 1949-04-21 | 1950-10-03 | Salad Walt | Lamp |
US2586265A (en) * | 1947-09-25 | 1952-02-19 | Clyde C Russell | Trouble light for illuminating work areas and projecting warning beams |
US2612599A (en) * | 1949-02-18 | 1952-09-30 | Theodore C Matson | Portable bed lamp with adjustable shutter |
EP0061905A1 (en) * | 1981-03-26 | 1982-10-06 | Steelcase Inc. | Task lighting system |
EP0328265A2 (en) * | 1988-02-09 | 1989-08-16 | Patrick Anthony Pennington-Ridge | Illuminating devices |
EP1431655A2 (en) | 2002-12-19 | 2004-06-23 | Norbert Wagner | Lamp |
DE102006002179A1 (en) * | 2006-01-16 | 2007-09-20 | Sigismund Libera | lamp |
-
1943
- 1943-11-10 US US509720A patent/US2374161A/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488666A (en) * | 1946-11-12 | 1949-11-22 | Herst Edward | Reading lamp |
US2586265A (en) * | 1947-09-25 | 1952-02-19 | Clyde C Russell | Trouble light for illuminating work areas and projecting warning beams |
US2612599A (en) * | 1949-02-18 | 1952-09-30 | Theodore C Matson | Portable bed lamp with adjustable shutter |
US2524638A (en) * | 1949-04-21 | 1950-10-03 | Salad Walt | Lamp |
EP0061905A1 (en) * | 1981-03-26 | 1982-10-06 | Steelcase Inc. | Task lighting system |
US4432044A (en) * | 1981-03-26 | 1984-02-14 | Steelcase Inc. | Task lighting system |
EP0328265A2 (en) * | 1988-02-09 | 1989-08-16 | Patrick Anthony Pennington-Ridge | Illuminating devices |
EP0328265A3 (en) * | 1988-02-09 | 1990-05-16 | Patrick Anthony Pennington-Ridge | Illuminating devices |
EP1431655A2 (en) | 2002-12-19 | 2004-06-23 | Norbert Wagner | Lamp |
DE10259447A1 (en) * | 2002-12-19 | 2004-07-08 | Norbert Wagner | lamp |
DE10259447B4 (en) * | 2002-12-19 | 2005-02-03 | Norbert Wagner | Luminaire with changeable light intensity distribution |
EP1431655A3 (en) * | 2002-12-19 | 2005-12-07 | Norbert Wagner | Lamp |
DE102006002179A1 (en) * | 2006-01-16 | 2007-09-20 | Sigismund Libera | lamp |
DE102006002179B4 (en) * | 2006-01-16 | 2007-11-29 | Sigismund Libera | lamp |
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