US2131823A

US2131823A - Lighting fixture

Info

Publication number: US2131823A
Application number: US84984A
Authority: US
Inventors: Silberman Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-06-13
Filing date: 1936-06-13
Publication date: 1938-10-04
Anticipated expiration: 1955-10-04

Description

N A M R E B n s L LIGHTING FIXTURE Filed June 13, 1936 ATTORNEY Patented Oct. 4, 1938 UNITED STATES PATENT. OFFICE LIGrI'I'1"IN(} FIIK'ITURIE.v

Louis Silberman, New York, N. .Y.

Application June 13,

7 Claims.

This invention relates to lighting fixtures and is particularly directed to a lighting fixture suspended from a ceiling, and the like articles.

, An object of this'invention is to provide a lighting fixture of the character described, provided with highly improved means to reflect light upwardly toward the ceiling, the fixture being so constructed that substantially no shadows are cast on the ceiling while producing a soft substantially uniform light throughout the room.

A further object of this invention is to provide in a lighting fixture of the character described, highly improved means for reflecting light downn wardly, as well as upwardly toward the ceiling. 5, A still further object of this invention is to provide a neat and durable lighting fixture of the character described, which shall be comparatively inexpensive to manufacture, easy to assemble, attractive in appearance and which shall yet be 9 practical and efficient to a high degree.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists'in the features of construction, combinations of elements,

5; and arrangement of parts which will be exemplified in the construction hereinafter described, and of which the scope of application willbe indicated in the following claims.

In the accompanying drawing,,in which is 30 shown one ofthe various possible illustrative embodiments of this invention' I Fig. 1 is an ,elevational cross-sectional view of a lighting fixture embodying the invention suspended from the ceiling; v 3% Fig. 2 is abottom plan view of animproved lighting fixture; V

Fig. 3 is a cross-sectional view taken on line 3 -3 of Fig. 1; s I

Fig. 4 is an enlarged elevational cross-sectional lQ view of a portion of my improved lighting fixture; and v Fig. 5 is a partial enlarged cross-sectional view of the central portion, of the fixture.

Referring now in detail to the drawing, Ill

plated on the outer surface. The member [2 may 60 the member i2 is made and then bent with said Received on the upper edge 1936, Serial No. 84,984

strip into circular shape, the member I3 thereafter being'soldered to the member [2 for fixing the former to the latter. Soldered or' otherwise fixed to the inner surface of the member l2, ad- W jacent the lower edge thereof, is an annular member of angular cross-section having an inwardly extendingflange' l6.

Mounted on the flange i6 is a circular plate or disc I! of glass, mirrored on its undersurface Ila. to reflect light upwardly. The plate IT has a central opening 18' for the purpose hereinafter appearing. Contacting the underside of the flange IE and disposed beneath the plate I1 is a plate 20 of glass preferably mirrored on its upper surface 20a to reflect light downwardly, and to cover the undersurface of the upper plate. The plate 28 is clamped to the plate I! in the manner to be explained hereinafter, and is preferably made of colored glass to produce highly attractive visual effects. The said plate 2llis likewise formed with a central opening 2| registering with the 7 opening l8. An apertured washer 22, having substantially the thickness of the flange I6, is interposed between the plates IT and 20, the opening of said washer registering with the openings l8 and 2| of the plates l1 and 2B.

-Means is provided to clamp the plates l1 and 20 together. To this'end, there is provided a member 23 having a substantially spherical portion 24 provided with a downwardly extending stem 25 passing through the openings l8 and 2|. At the .upper end thereof, the stem 25 has a shoulder 26 contacting the top of the plate IT. The lower end of the stem 25 is screw-threaded to receive a nut 28 screwed thereon for pressing a washer 30 received on said stem against the lower surface of-theplate 20.

The spherical portion 24 of the member 23 is furthermore formed with a plurality of horizontal equi-angularly spaced threaded openings 32, into which are screwed lamp sockets 33 extending in radial direction. Lamps 34 may be screwed to the sockets 33. Although three sockets for the' reception of three lamps are shown in the drawing, it will be understood that any suitable number of sockets may be provided. The member 23 also has at the top thereof, a vertical screwthreaded opening 35 and an annular shoulder 36 surrounding said opening. Screwed within the opening 35 is a pipe 31, the upper end of which passes through the ceiling for connection to a junction box 38. Surrounding the pipe 31 is a tube 39 resting on the shoulder 36 and preferably polished on its outer surface. A cup-shaped member 40 is receivedon the tube 39 and fixed thereto by a screw 4|, the upper edge of the cup being in contact with the ceiling. The wiring from the junction box 38, passes through the nine 31 and the member 23 to the sockets 33.

The lamps 34, as shown in the drawing, are

located directly above the mirrored plate ll and within the cylindrical member [2. The light from said lamps are reflected upwardly by the mirror I! to the ceiling. It will be noted that the only connection between the plate I! and the ceiling, is at the center of the plate, hence eliminating shadows usually caused by connecting members disposed above the lamps, as in lighting fixtures now in use.- The plate ll, being flat, reflects the light upwardly without any substantial loss over a wide area on the ceiling. The colored mirror Zil reflecting light downwardly enhances the lighting efiects produced by the lighting fixture. I have found that with my improved lighting fixture a particularly soft and. pleasant light is produced for illuminating a room. a

The plates H and 26 may be removed or replaced readily by merely unscrewing the nut 28 which permits the stem 25 to be lifted out of the openings l8 and 25. Should either of these plates break, replacing is greatly facilitated. by reason of the engagement of said plates with opposite sides of the flange IS.

The mirror plate 20 reflects downwardly all the light rays impinging thereon. When the lamp I is illuminated, the light is reflected upwardly by the mirror H. The rays of light are reflected to the various walls, the floor and furniture within the room which in turn reflect light to the plate 20 and said plate reflects said reflected light downwardly. There are no direct rays from the lamps 34 to the plate 251, but the light is reflected around the room and finally reaches the plate 29. Furthermore the plate 20 serves to cover the undersurface of the mirror plate M. It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted ,to meet. the conditions of practical use.

,herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new my desire to secure by Letters Patent:

1. A lighting fixture comprising a cylindrical member provided with an inwardly extending radial flange, a pair of glass disc reflectors contacting opposite sides of said flange, said discs being formed with registering central openings, a member having a threaded stern extending through said openings, a nut screwed to said stem for clamping said discs together, lamp sockets on said member and lamps in said sockets.

2. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead having a groove receiving the upper edge of said cylindrical member, an annular member of angle-shaped cross-section, fixed to the inner surface of said cylindrical member, adjacent the lower edge of the latter, and having an inwardly extending flange, a pair of glass disc reflectors contacting opposite sides of said flange, means for clamping said plates together at the center, and lamps supported by said means above said discs.

.3. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead having a groove receiving the upper edge of said cylindrical member, an annular member of angle-shaped cross-section, fixed to the inner surfaceof said cylindrical member, adjacent the lower edge of thelatter, and having an inwardly extending flange, a pair of glass disc reflectors contacting opposite sides of said flange, means for clamping said plates together at the center, said means comprising a member having a threaded stern extending through registering openings in said discs, a nut on said stem, and lamps on said stem above said reflectors.

4. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead having a groove receiving the upper edge of said cylindrical member, an annular member of angle-shaped cross-section, fixed to the inner surface of said cylindrical member, adjacent the lower edge of the latter, and having an inwardly extending flange, a pair of glass disc reflectors contacting oppositev sides of said flange, means for clamping said plates together at the center, the adjacent surfaces of said discs being mirrored to reflect lightin opposite directions, and lamps supported by said clamping means above said reflectors.

5. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead having a groove receiving the upper edge of said cylindrical member, an annular member of angle-shaped cross-section, fixed to the inner surface of said cylindrical member, adjacent the lower edge of the latter, and having an inwardly extending flange, a pair of glass discs contacting opposite sides of said flange, and means for clamping said plates together at the center, one of said discs being colored and the other of said discs being mirrored.

6. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead on said member comprising a wire having a radial groove receiving the upper edge of said member, an annular member of angular crosssection fixed to the inner surface of said first member, and having an inwardly extending flange, a pair of disc reflectors within said first member and on opposite sides of said flange, said discs having registering central openings, a member having a threaded stem extending through said openings, a nut on said stem, lamp socketson said member, lamps in said sockets, a pipe screwed to said member, and a tube surrounding said pipe.

7. A lighting fixture comprising a cylindrical member made of sheet metal, an annular bead on said member comprising a wire having a radial groove receiving the upper edge of said member, an annular member of angular crosssection fixed to the inner surface of said first member, and having an inwardly extending flange, a pair of discs within said first member and onopposite sides of said flange, said discs having registering central openings, a member having a threaded stem extending through said openings, a nut on said stem, lamp sockets on said last mentioned member, a pipe screwed to said member, and. a tube surrounding said pipe, one of said discs being a flat mirrored glass plate and the other of said discs being colored glass.

LOUIS SILBERMAN.