US1295705A - Lighting-fixture. - Google Patents

Description

A. D. CURTIS.

LIGHTING FIXTURE.

APPLICATION FILED JUNE 20.1917.

1,295,705. Patented Feb. 25, 1919.

Fqj

'a citizen'of the United States,

of .whichthe following is in diffusing the will be much more AUGUSTUS D. CUB'IIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL X-RAY REFLECTOR C0,, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LIGHTING-FIXTURE.

Specification of L tters Patent.

Patented Feb. 25, 1919.

Application filed June 20, 1917. Serial No. 175,780.

To all whom it may concern:

Be it knownthat I, AUGUSTUS D. CURTIS, residing at Ghicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Lighting- Fixtures,

a specification.

My invention relates to that class of fixtures, called luminous bowl fixtures, such as are described inPatent i -1,121,196 issued to Earle Q. McKinnie, and is an improvement thereon. In the patent referred to, a glass diffusing cup is provided and its bottom wall is thickened to prevent the intense spot light from the electric light bulb directly below the fixture. expected to reflect the'rays and thus assists light to the luminous bowl. My invention has for its object to provide a special reflector or reflecting surface, which eflicient in illuminating the luminous bowl.

My means of accomplishing the foregoing objects may be more readily understood by having reference to the accompanying drawings, which are hereunto annexed and are a part of this specification, in which:

Figure 1 is a vertical sectional View of a fixture provided with my improvement.

Fig. '2 is a detail View of the reflector.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawings, the fixture 5 is suspended by chains 3,secured to the usual ceiling canopy 4. In the center of the fixture 5, is mounted a reflector 6, adapted to direct the light rays from the electric light bulb 7, upwardly and outwardly. In the bottom of the reflector 6, is mounted the diffusing cup 8, which is preferably made of semitranslucent glass. Within the diffusing This thickened portion is also cup 8, I place my reflector 9, made of opaque material having a mirrored or other reflecting surface, the reflector being either in the form of a cone or a pyramid. As it is formed of opaque material, it follows that the spot light is eliminated, while the angle of the reflector 9, is such that the light rays are reflected through the walls of the diffusing cup 8, so that the luminous bowl 10, which is secured to the fixture 5, and surrounds the reflector 6, and the diffusing cup 8, is evenly illuminated and there is a complete absence of any spotted effect thereon, and it furnishes a mellow, even glow, producing a very satisfactory illumination.

Although I have described the reflector 9, as being formed separately from the diffusing cup 8, it will be apparent to ersons skilled in the art, that it may be ma e integral with the diffusing cup without departing from the spirit of my invention, which is designed to furnish means to deflect and reflect the light rays through the side walls of the diffusing cup 8.

Having described my invention what I regard as'new and desire to secure by Letters Patent is:

The combination in a fixture of an electric light bulb with a reflector to direct the light rays upwardly and outwardly, a diflusing cup mounted in the bottom of said reflector, a glass bowl secured to the fixtureand surrounding the reflector and diffusing cup, and a conoidal reflector within said difl'using cup and adapted to reflect the light rays through the glass bowl to be illuminated.

In testimony whereof, I have signed the foregoing specification.

AUGUSTUS D. CURTIS.

the side walls of said cup to cause

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