US2130803A - Lighting fixture - Google Patents

Description

A. LAZERSON Sept. 20, 1938.

LIGHTING FIXTURE- Filed Ju'l 24, i936 3 Sheets-Sheet 1 Sept. 20," 1938. A. LAZERSON 2,130,803

LIGHTING FIXTURE Filed July 24, 1936 s Sheets-Sheet 2 p 1938- v i A. LAZERSON 2,130,803

- LIGHTING FIXTURE Filed July 24, 1956 s sheets-sheets Zazersor:

23* uted that shadows from the light fixture are has 'particular reference to' a the indirect variety.

PatentedS eptQZO, 193s masses PATENT OFFICE LIGHTING FIXTURE Application Julyv 24,

. 7Claims.

yiMy invention relates to alighting fixture lighting fixture of Oneof the objects of the invention is the pro:

vision of 'afixture having means whereby the light bulb can be pro-pierly adjustedin a vertical direction with respect to the reflecting surfaces, therebysecuring af'maximum amount of efficiency from Another andfurther object of my invention ne'ctionwith the lighting fixture and for relamping'orplacing new light bulbs in the fixture when 7 it" b'ecomes necessary to "replace the light bulb f'dueto; breakage, burning out; or the like.

Another and further object of my invention is the provision of a light fixture in which the dark or "shadow spot immediately under the fixture is Another and further object of my invention is the] provision of alight fixture of an indirect variety-and in which thelight rays are so'distribeliminated and an even distribution of light rays is securedin' and about the lighting fixture.

:The's'e and other objects of my invention will be more fullya'nd better understood by reference to the accompanying sheets of drawings; and in 2 Which- 1 light fixture; ;-'Figure'2 isaview tially in section of the F ure 2; V

" Figure li's a perspective view of my, improved partially in elevation and pars is atop viewof the ring to which the reflector shown in Figure 5 is attached;

45 1 Hedge contoursof the r'ingand central reflector Figure 7*is a detail sectional View showing the I sh'own 'in" Figures 5 and 6; and

in-which like reference characters 'referto like parts throughout. ajcentral flat circular reflector fi-fFiguretfis a detail vertical sectional View on inea-" aorrig res.

' Referring now specificallyto the drawings, and

plate Ill-Yis shown," this plate being preferably 7 1 made of'rnet'alhaving a highly polished reflect;

ing "surface; or is made of glass or any other suitfixture on line 2 2 of a detail sectional View showing the Abraham Lazerson, Chicago, Ill.

1936, Serial No. 92,328

able material. The reflector plate ID has a central opening therein and a plurality of brackets H, II extending radiallyfrom said central opening, which brackets are upturned at their outer ends and have a metal ring I2 secured thereto. A flange l3 extends around the ring l2 at its lower edge and projects inwardly a short distance, the ,ring 12 being spaced'apart from the outer periphery of; the plate I to allow light rays to pass therearound, as shown particularly in Figure 2 and as will be more fully described hereinafter. Mounted against the under side of the plate i9 is a glass ring [4; the inner edge of which is in substantial register with the edge of the plate i l around the opening in the center thereof, this glass preferably being translucent and adapted to receive rays of light along its inner edge which are distributed throughout its surface and direct ed downward, thereby providing light on the underside of the fixture, and is known in the trade generally as an edge glow glass. The glass member is held in position by means of a ring which has an annular portion 16 which engages the under side of the glass ring M for a short distance adjacent its inner edge, a vertical wall H, a channel portion I8 extending parallel with the annular portion l 6 but in stepped vertical relation therewith, and witha downwardly extending annular flange portion I 9 extending around the inner edge of the ring I5. Straps 20, 20 are provided which are secured to the plate I9 by means of rivets 2|, 2| and which extend inwardly over the'channel l8 of the ring I5, the ring being secured to the straps 20, by means of bolts 2 la, 7 2 la, with spacers 22, 22 being fitted over the bolts 2la., 2la between'the plate I5 and the straps 29, 20, the bolts 2m, 2la being threaded into the straps 20, 20. The vertical wall portion I1 is approximately one-half as high as the glass 'ring I4 is thick, so that at least one half the edge of the glass ring I5 is exposed to receive rays of light from the light bulb. The channel portion I8 has struckup sections 23, 23 adjacent which are slots 24, 24 for the reception of the fastenin means for a reflectorhereinafter described.

A reflector 25 of bowl-like form is provided having a channel portion 26 extending therearound, the reflector preferably being made of metal with a highly polished surface; A flange 21 is provided on the reflector 25,- this flange being approximately the same height as the annular channel portion [8 on the ring l5, with a downwardly extending wall portion 28 being provided, and a flange29 of the channel portion 26 being provided, this flange 29 and the wall 28 forming the sides of the channel section 26, and which is interfltted into the channel section I8 of the ring !5. Spring clips 3|], 30 are provided which 7 are secured to the portion 26 by means of rivets 3|, 3| or other appropriate fastening means, and have tongues 32, 32 projecting therefrom which are received into the slots 24, 24 and fit under the struckup portions 23, 23 in the channel section IS, the clips having upturned ends to be received into the slots 24 and are slightly curved so that as the reflector 25 is placed in position the clips are placed under tension to hold them securely in position and also render them tight and impervious to dust, dirt and the like.

The reflector 25 is placed in position by being fitted against the channel iii of the ring member i5, and the reflector turned in a counterclockwise direction until the clips are received in the slots 24. A further slight turn tightens the reflector into position under the lamp, in assembled relation. When it is desired to remove the reflector for relamping the fixture, the reflector is twisted in a clockwise direction, thereby releasing the clips 30 and allowing the ready removal of the reflector so that access may be had to the lamp.

A suspension means for securing the light to a ceiling includes a hollow stem 33, to the upper end of which a canopy 34 is provided, with the usual swivel joint 35 and the nipple 36. Suitable lead wires 31 and 38 are provided which pass through the nipple 36 and stem 33 downward to a socket 39 which has the lamp 40 mounted therein in the usual manner. At the lower end of the stem 33 a suspension member is provided having a socket portion 4| and a flange portion 42, with screws 43 being provided which extend through the socket portion 4! by means of which the suspension member is secured to the sternv 33. The flange 42 has a plurality of holes 44, 44 therein through which threaded studs 45, 45 extend, these studs having nuts 46, 46 thereon. The studs are threaded into the upper edge of the socket 39 and locked in place by means of lock nuts 41, 41, with the nuts 46 being loosely positioned upon the studs 45 and through which a vertical adjustment of the socket 39 is made. The socket 39 with the lamp therein is suspended by means of the studs 45 and nuts 46.

A husk 48 is provided, to the lower end of which-a plurality of braces 49, 49 are secured in any approved manner. The ends of these braces are turned at right angles to the body thereof and are secured to the inner edge of the plate It] by the rivets 2!, 2! which pass through the plate l and the straps 2U, 20, thus securing this portion of the fixture together in permanently fixed relation. The upper edge of the husk 48 has an inwardly turned flanged portion 50 which engages over the flange portion 42 of the suspension member, and which in turn supports the entire lower portion of the lighting fixture. A slidingly mounted cap is provided which is fitted over the upper end of the husk 48 and is supported by an annular flange 52 extending around the upper end of the husk 48. When it is desired to adjust the socket 39 and lamp 40 in the proper position, the cap 51 is lifted, the nuts 46 turned on the studs 45, and the socket, including the lamp, may be raised and lowered asrdesired.

In operation it will be understood that the device is suspended from a ceiling in any suitable manner, and is placed in position in assembled relation. When it is desired to renew the lamp it is only necessary to remove the reflector 25 by turning it in a counterclockwise direction, when the lamp 40 can be easily removed from the socket, being in threaded engagement therewith in the usual manner, and replaced with a new lamp. When this replacement is made, the lamps, which even with one manufacturer vary in length with relation to the neck portion thereof, may be placed in proper adjusted position with respect to the reflector as heretofore described, by moving the cap 5! upward along the stem and adjusting the height of the socket by means of the nuts 46 on the studs 45 to secure the best position of the lighting bulb to obtain maximum results. The lamp 40 must be fairly low in the reflector in order to obtain the maximum lighting effects from it and yet not too close to secure the proper reflection and transmission of light rays from the reflector.

When the device'is in assembled position, the light rays pass upward and outward from the lamp 43, some of the rays striking against-the metal ring l2 at the outer edge of the plate In and reflecting downward around the edgeof the plate i0 underneath the fixture. Other rays striking against the ring l2 pass to the under side of the plate l0, while others are reflected upward by means of the'flange l 3directly against the under side of the plate It]. "Rays passing through the'edge of the glass ring 14 are distributed in and about the under side of the reflector 25 thereby lighting the entire spaceunderneath the fixture in such manner that a shadow which might be produced in the room-by reason of the reflector plate If] is entirely eliminated. The rays of light are distributed so thoroughly in a plurality of directions that not-onlyarethey evenly distributed throughout the room for purposes of illumination, but the fixtureitself is so completely lighted that all dark spots in and adjacent the fixture are eliminated. In addition, the device possesses the factors of adjustment as far as the lampis concerned, as heretofore described.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as 1 contemplate changes in form and the proportionof parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim:

1. A lighting fixture comprising, in combination, a reflector plate having a central opening therein, a reflector ring around the -outeredge of said plate having an inwardly turned flange around the lower edge thereof, the reflector ring being spaced from the outer edge of said plate, brackets connecting the plate and reflector ring, the plane of the plate being betweenthe upper and lower edges of the reflector ring, a removable reflector secured to' said plate and closing the central opening therein, means whereby the said plate is suspended, a lamp socket carried by-said suspension means, and a lampin-saidsocketan extending into said central opening, 3

2. A lighting fixture comprising, in combination, a plate having a central opening thereim a reflector ring around the outer periphery of the said plate and spaced therefrom, suspension means secured to the "said plate, a translucent ring on the said plate encircling. the said opening therein, means whereby the said ringds're'- tained against the said plateya lzxowl-sh-aped-re flector secured to saidplategand a lamp mount- 10 I reflector secured to said metallic ring, and a lamp I mounted in said suspension means and extending ed "in said suspension means and extending into said central opening and said reflector.

said plate and spaced therefrom, suspension means secured to the said plate, a translucent ring on the said plate encircling the said opening" therein, a metallic ring one edgegof which overlaps the said translucent ring, a bowl-shaped intosaid'central openingand said reflector.

4; Allig'hting' fixturecomp'rising, in combination, a plate having. a central opening therein,

said plate and the ring being in register with each other, a metallic ring one edge of which overlaps the said translucent ring, a bowl-shaped reflector secured to-said metallic ring, and a lamp mounted in said suspension means and extend- "ing into said central opening and said reflector.

53A lighting-fixture comprising, in combination, a stem, a plate having a central opening therein supported by said stem, a reflector ring supported by said plate and spaced therefrom extendingaround the outer edge thereof, a translucent ring surrounding the opening in said plate,

-a metallic ring having ,a channel section overlapping the said translucent member, and secured to said plate, having fastening ,means thereon,.

. "a refleotorfltted into said opening in said plate, fastening means on the outer periphery thereof adapted to coact with the fastening means on said metallic ring, a socket, and a lamp in said socket extending into said reflector.

6. A lighting fixture comprising, in combination, a stem, a plate having a central opening therein supported by said stem, a reflector ring extending around the outer periphery of said plate and spaced therefrom, a translucent ring surrounding the opening in said plate placed in face to face relation with said plate, a metallic ring supporting said translucent ring having a channel section extending inwardly from the edge of said translucent member, a bowl-shaped reflector having a channel section therearound fitted into the opening in the plate, a lamp socket, a lamp extending into the bowl reflector and opening in the plate, and interengaging fastening means on the channel sections of the reflector and the metallic ring.

' '7. A lighting fixture comprising, in combination, a stem, a plate having a central opening therein supported by said stem, a reflector ring extending around the outer periphery of said plate and spaced therefrom, a translucent ring surrounding the opening in said plate placed in face to face relation with said plate, a metallic ring supporting said translucent ring having a channel section extending inwardly from the edge of said translucent member, openings in said channel section, a bowl-shaped reflector having a channel section therearound fitted into I the opening in the plate, clips on the channel section of said reflector having tongues thereon adapted to be received in the openings in the channel section of said metallic member, a lamp socket, and a lamp extending into the bowl reflector and opening in the plate.

LAZERSON.

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