US1982204A - Lighting fixture - Google Patents

Description

Nov. 27, 1934. 1.. c. DOANE 1,982,204

LIGHTING FIXTURE Filed March 9, 1932 INVENTOR Leroy C Deane 4, ATTORNEY Patented Nov. 27, I934 UNITE STATES PArsT FFICE LIGHTING FIXTURE tion of Connecticut Application March 9,1932, Serial No. 597,673

11 Claims.

The present invention relates to lighting fixtures and is more particularly directed toward a totally enclosed lighting fixture.

The present invention contemplates a lighting 6 fixture having a glass cover plate slidably carried about the lamp socket and arranged so that it may be supported either in an elevated position (for lamp renewal and cleaning purposes) or supported in a lowered position where it rests on other parts of the fixture.

The invention also contemplates an improved form of frame for supporting the light controlling parts of indirect lighting fixtures, this frame being made up of inexpensive members which may 18 be easily assembled together as a unit. This frame may be secured in place after the installation of the electrical parts of the fixture.

A further object of the invention is to provide a fixture of the indirect type wherein one can use a glass cover or roof, or not, as desired, the parts being so arranged that the glass roof and support for this roof may be attached to the fixture after the fixture has been wired. This makes it unnecessary to incorporate the glass cover plate 25 and its support into the fixture, previous to the wiring and mounting of the fixture.

The accompanying drawing shows, for purposes of illustrating the present invention, one of the many embodiments in which the invention 30 may take form, it being understood that the drawing is illustrative of the invention rather than limiting the same. In the drawing:

Fig. 1 is a vertical sectional view through a lighting fixture, the cover plate being shown in I full lines in the raised position and in the lowered or normal position in dot and dash lines, dot and dash lines also being employed to illustrate a position of the deflector and diffuser during the placing of these parts on the frame;

Fig. 2 is a fragmentary perspective view of the socket cover and shade supporting ring of the form shown in Fig. 1;

Fig. 3 is a View similar to Fig. 2 showing a slightly modified form of construction;

Figs. 4 and 5 are sectional views taken on the lines 44 and 5-5 of Fig. 1, the parts being broken away; and

Fig. 6 is a fragmentary sectional view on the line 66 of Fig. 5.

A supporting stem 10, of the usual type, is employed to support the fixture. It is threaded into a bushing 11 secured to the upper end 12 of a socket cover 13. The socket cover supports a socket 14 and lamp bulb 15 in the usual manner.

The side walls or" the socket cover 13 are cylindrical, as will be clear from the drawing.

1 In the form shown in Figs. 1, 2, 4, and 5, these side walls are provided with longitudinal grooves 16 which extend the entire length of the socket cover.

A shade or cover plate is indicated at 17. It is secured in a sheet metal ring 18 by clips indicated at 1'7 and screws indicated at 20. The ring 18 is slightly larger than the socket cover 13 and is slidable lengthwise of the cover. The ring 18 is provided with a number of bumps or dents 19 which are adapted to enter the grooves 16 and guide the ring up and down along the socket cover. These bumps or dents extend inwardly a sufficient amount to be engageable with the top 12 of the socket cover 13 when the ring is in the elevated position and turned slightly, as will be clear in Figs. 1 and 4.

In the modified form shown in Fig. 3, the guides 16' on the socket cover 13 are pressed outwardly and the shade supporting ring 18 has notches 19' adapted to fit these guides. When the ring 18 has moved above the top of the socket cover 13 it may be turned partially as indicated so as to be supported. I

The lower end of the socket cover 13 is perforated to receive attaching screws 25, which support a frame to be described. Before the frame or the screws are in place, one can pass the ring 18 or 18 with or without attached cover plate 17, up on the socket cover from underneath so that the placing of this ring need not be effected before the fixture is installed and wired.

In the form shown, the frame supported by the screws 25'has an upper small ring 26 which may be made of a strip of metal bent to the. shape indicated and welded at its ends 27. This ring is shaped as indicated so as to clear the grooves 16. The ring 26 supports three struts 29, 30, and 31. These struts are made of wire welded to the ring 26. They diverge as indicated to accommodate the lamp bulb 15. These frame members have vertical portions indicated at 29', 30', and 31', the vertical portion 29 of the member 29 being at a greater radius or distance from the axis of the fixture than the vertical portions 30 and 31 of the members 30 and 31. The members 30 and 31 are bent as indicated at 32 and 33, the parts 33 being at the same distance from the axis of the fixture as the lower ends of the vertical portion 29'. The three members are bent outwardly as indicated at 34 to provide outwardly extending feet and the portions of these members are secured to a ring 35, preferably by welding.

The deflector for the fixture is indicated at 40 and the diffuser at 41. This diffuser has an upward re-entrant flange 42 of the same diameter as the lower edge of the deflector 40. These two members are secured together by a split ring 43 and the parts are of such size that the ring 43 will fit on the vertical portions 33 and 29 of the frame members and will rest on the feet 34 as indicated in the drawing. The deflector and diffuser may be inserted on to the frame by tipping them at an angle as indicated in dot and dash lines and passing them to the position shown after which the left side of the deflector and diffuser will be raised high enough to bring the ring 43 above the foot 34 of the member 29. These-parts may then be moved to the right and down to the full line position. The cover plate 17 may then be lowered so as to rest on top of the deflector.

In order to prevent accidental removal of the deflector and diffuser, a locking clip is employed as indicated at 45. This clip is secured to a plate 46 by a screw 47. When the. screw is loosened,

the clip or washer 45 may be moved to the dotted line position so as not to interfere with'the removal or replacement of the deflector and diffuser, but, when the parts are in the position indicated in fulllines in Figs. 5 and.6, the ring 43 is, immovably held in place. p

It is obvious that the invention may be embodied in many forms and constructions, and I wish it to be understood that the particular forms shown are but a few of the many forms. Various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is 1. In a lighting fixture, a pendant lamp socket,

' a cylindrical socket cover having an inwardly extending upper end and longitudinal guides ex-v tending downwardly from the upper end to provide guide ways, a shade supporting holder, and a shade supported thereby, the holder having inwardly protruding elements entering the guide ways and being engageable with the top of the socket cover to support the shade and holder from the top of the socket cover.

2. In a lighting fixture, a pendant lamp socket, a cylindrical socket cover having an inwardly extending upper end and longitudinal guides extending downwardly from the upper end to provide guide ways, a shade supporting holder, a shade supported thereby, the holder having inwardly protruding elements entering the guide ways and being engageable with the top of the socket cover to support the shade and bolder from the top of the socket cover, and a stop to prevent the shade holder from sliding downwardly off the socket cover.

' 3. In a lighting fixture, a pendant lamp socket, a sheet metal socket cover having cylindrical walls and an inwardly drawn upper end, the walls having longitudinal grooves formed therein and extending the entire length of the socket cover, a shade, and a sheet metal shade holdingring having inwardly extending elements slidably received in the grooves and engageable with the top of the cover to support the ring and shade elevated.

4. In a lighting fixture, a pendant lamp socket, a cylindrical socket cover, a ring open at the top and, loosely fitting the socket cover and capable of being passed upwardly about the socket cover, the ring and socket cover having guide ways to permit sliding and prevent rotation, the ring having projections to engage the top of the socket cover when the ring is above the socket cover, a frame extending downwardly from the socket cover and adapted to accommodate a lamp bulb in the socket, and frame securing means which prevents downward removal of the ring.

5. In a lighting fixture, a pendant lamp socket, a cylindrical socket cover, a ring open at the top and loosely fitting the socket cover and capable of being passed upwardly about the socket cover, the ring and socket cover having guide ways to permit sliding and prevent rotation, the ring having projections to engage the top of the socket cover when the ring is above the socket cover, a frame extending downwardly from the socket cover and adapted to accommodate a lamp bulb in the socket,-and,frame securing means which prevents downward removal of the ring, the frame including a non-circular ring inside the socket cover to accommodate the guide ways of the socket cover.

6. In a lighting fixture, a pendant lamp socket, a lamp bulb in the socket, an upwardly acting deflector for reflecting light upwardly, a deflector support, a glass cover plate for the deflector, a socket cover about the socket, and a ringsecured to the'cover plate andlslidable along the socket cover and movable upwardly beyond the socket cover, the socket cover and ring having cooperative means which preventlowering the ring relative to the socket cover except when these parts are in predetermined angular relation whereby the ring and cover plate may be supported from the top of the socket cover.

7. In a lighting fixture, a small upper rin adapted to receive the neck of a lamp, bulb, a large diameter lower ring, and three frame members interconnecting the rings, each frame member having a foot extension outside the lower ring, one of the frame members having a vertical portion extending directly upward from .its foot extension, the other frame members having a horizontal ofiset above the lower ring and vertical portionsv above the offset.

8. In a lighting fixture a small upper ring adapted to receive the neck of a lamp bulb, a

cured to the lower ring intermediate the two last mentioned frame members, the clip member being movable so as to project beyond the lower ring or so as to be within said ring. I V

9. A lighting fixture frame comprising a lower large diameter ring, an upper small diameter ring, and three struts interconnecting the rings, the lower ends of the struts being outside the lower ring and having outwardly directed hori zontal extensions, the strut having vertical por tions extending upwardly from adjacent the ring, two of said vertical portions being substantially closer to the axis of the ring than the other one.

10. A lighting fixture frame comprising a lower large diameter ring, an upper small diameter ring, and three struts interconnecting the rings, the lower ends of the struts being outside the lower ring and having outwardly directed horizontal extensions, the upper ends of the struts being inside the upper ring, the strut having vertical portions extending upwardly from adjacent the ring, two of said vertical portions being subs'tantially closer to the axis of the ring than the other one.

11. In a lighting fixture, a socket cover having cylindrical side Walls provided with longitudinal grooves extending to the bottom thereof, an outer ring slidable along the socket cover and having extensions entering the grooves, a frame sup-

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