US1786748A - Lighting fixture - Google Patents

Description

Dec. 30, 1930. E. A. GlLLlNDER LIGHTING FIXTURE led Dec. 21, 1928 ZiSheets-Sheet l I/II IN VEN TOR.

A TTORNEYS.

Dec. 30, 1930. E. A. GILILINDER LIGHTING FIXTURE Filed Dec. 21, 1928 2 Sheets-Sheet 2 I N VEN TOR. A? 644M055,

ATTORNEYS.-

Patented Dec.- 30, 1930 umresrarss; ArENr relcs EDGAR A. GILLINDER, OF PHILADELPHIA, PENNSYLVANIA LIGHTING FIXTURE Application filed December 21,1928. Serial No. 327,501.

My invention relates to a novel construe novel lighting fixture, embodying my invention of semi-indirect electric lighting fixture, tion. wherein I have provided an upper fixed 010- Figure 2 represents on an enlarged scale, sure of conical shape having on its outer a front elevation of a portion of the upper surface a series of novel light reflecting fixed prism member seen in Figure 1. i 55 prisms arranged in annular rows with the Figure 3 represents asectional view on the sizes of said prisms decreasing from the base line 33 of Fig. 2. of said conical closure to its apex, said Figure 4 represents a section on line 4-4, upper conical member serving as a closure Fig. 2. i

for the bowl or lower portion of the fixture, Figure 5 represents a section on line 5+5, 60

which latter is adjustably mounted with re- Fig. 2. spect to said fixed upper member so that Figure ,6 represents on an enlarged scale a upon removal of a lower readily accessible vertical sectionalview on line 6-6, Fig. 1.

locking nut, the lower portion of the fixture Figure 7 represents on an enlarged scale,

can bereadily lowered, so as to give access a sectional view of the lower portion of the to the interior for the purpose of replacing fastening means seen in Fig. 6. electric light bulbs, inspection, cleaning or Figure 8 represents a transverse section on repairs. line 88, Fig. 6.

My invention further consists of a novel Similar numerals of. reference indicate construction of an upper conical light recorresponding parts in the figures. Referflecting member provided with prisms of a ring to the drawings novelconstruction arranged in annular rows 1 designates my novel construction of a wherein the apices or high points or" an ansemi-indirect lighting fixture which comnular series of prisms merge into the low prises the upper conical fixed member 2 of points of the next aligning prisms of the clear glass, and the lower shade or globular next annular series, the area or each row of member 3 of opal glass, the latter being proprisms decreasing upwardly whereby the vided with the annular seat 4 in its upper light is softened, difiused and evenly deportion in which the bottom peripheral edge flected upwardly. 5 of the fixed upper member 2 is seated.

" It further consists of novel means for sup- The electric lights 6 seenin Fig. 6 can be porting and adjusting the lower shade porsupported within the fixture in any suitable tion of the fixture. manner, one form being shown in Fig. 6,

It further COIlSlStS Of other novel features wherein 7 designates a upporting eye below of construction and advantage, all as will be which is the head 8, which rests on the conihereinafter set forth in t e spe ifi n and cal cap member 9 which forms a closure and claims appended hereto. finish for the top of the fixture.

For the purpose of illu trating my inven- 1O designates a socket block positioned tion I have shown in the accompanying in the upper portion of the fixed prism memdrawings several forms thereof which are at her 2 and having the lamp sockets 11 secured present preferred by me, since the same have thereto by any suitable means. l2 designates been found in practice to give satisfactory a tube or piece or pipe which passes through and reliable results, although it is to be the socket block 10 and the upper fiber or asunderstood that the various instrumentalibe fio Washer 13 and thence through the ties of which my invention consists can be members 9 n T P 7 a 9 may be 95 variously arranged and organized and that integral and the upper end of the tube 12 may I my invention is not limited to the precise be BW r d Hit-0 h P F 13 arrangement and organization of the instruthe socket block 10 and its adyuncts being mentalities as herein shown and described, securely held in assembled position by the Figure 1 represents a side elevation of a nut 14. The conductors 15 lead through the mg top of the tube 12 and the passages 16 to the light sockets 11.

1? designs es an outer sleeve slidably mounteo or telescoping upon the lower end of the tube 12, which latter is provided with the longitudinal slots 18, seen in Figures (3 and 8, through which pa the transverse bolt 19. which is fixedly secured to the sleeve 17, whose lower end passes through the shade 3 and is secured thereto so that said sleeve and shade can be raised and lowered as a unit. When the parts are in assembled position as seen in Figs. 6 and 7, the lower end 20 of the tube 12 projects below the lower end 21 of the sleeve 17 and exteriorly threaded for engagement with the nut 22. The shade 3 is e-cured to the sleeve 17 by the upper nut and fibre washer 2 and by the lower nut 25, the member 26 which may be of sheet metal or hard rubber, and the rubber packing disk 27.

The nut 25 may be round and knurled as seen in Fig. 1.

The parts 2% and 27 can be of any resilient, cushioning or fibrous material if desired. The member 26 being of thin sheet metal or hard rubber will yield slightly when the nut 25 is tightened so that the requisite tight jointwill be formed between the sleeve 17 and the shade 8. The parts in assembled position will appear as in Fig. (l. .Vhen it is desired to have access to the interior of the fixture, it is only necessary to remove the nut 22 seen in Figs. 6 and 7, whereupon the shade 3 and its adjuncts can be lowered into the position seen in dotted lines in Fig. (3, the contact of the bolt 19 with the lower ends of the slots 18, as seen dotted in Fig. 6 arresting the downward movement of the shade, is evident. hen the shade is in the position seen dotted in Fig. (5, the lights can be in-- spected, cleaned and replaced and the whole interior of the fixture is readily accessible. Upon raising the shade, its sleeve 17 and their adjuncts, and replacing the nut 22, the parts will appear as seen in (5. The outer surface of the upper fixed portion 2 of the fixture is provided with annular rows of prisms, five in the present instance, which are designated 28, 29, 30, 31 and as will be understood from Figs. 1 and 2, the prisms in each successive row decreasing in size upwardly, the larger prisms being in the series designated 28. This novel arrangement of prisms consists in having the low point of a pair of the lower prisms 28 as 33 (see Figs. 2 and 3) merge into the high point or apex 34 of the aligning prism above it. The high point or apex S4 of each prism in the row 29 merges into the aligning low point 35 between a pair of prisms in the row 30. The low point 35 just referred to merges into the high point or apex 36 of the aligning prism in the row 31. The high point 36 (seen in Fig. 2) merges into the ali ning low point 37 between a pair of prisms in the upper row The foregoing description applies to each row of prisms considered in vertical align ment as seen in Figs. 2 to 5, and my novel construction not only affords an upper closure for a semi-indirect lighting fixture, but in addition greatly augments, softens and diffuses the light over prior constructions, where the top of the fixture has been left open.

It will be understood that if desired the prisms may be omitted from the upper conical member 2, and while I have described tl e latter as being composed of clear glass, and the lower shade portion 3 of opal glass, any other desired glass may be employed.

It has heretofore been customary in fixtures of this general character to leave the top open which afiords ingress to dust and dirt which settles in the shade portion 3. By my novel construction, I not only close the top of the fixture, but in addition employ novel means for enhancing and augmenting the upwardly reflected light, as is evident.

I am aware that the invention may be cinbodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

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

1. In a lighting fixture, a fixed conical glass member, a tubular rod penetrating the apex of said glass member, the top of said tubular member being screw threaded, a metallic ca p fitted to the apex of said glass member, an electric socket holding member having en gagement with said tubular rod, a resilient member interposed between said socket holding member and the apex oi said glass member, and means for clamping said metallic member, glass member, resilient member, and socketholding member together.

2. In a lighting fixture, an upper fixed conical closure of glass, 21- lower bowl of glass which is movable with respect to the fixed closure and provided with an upper peripheral seat for the outer periphery of said upper closure, an inner tubular member carried by said fixed closure and having its upper end seated on the apex of said fixed closure, an outer lover tubular member re ceiving and having telescopic relation with the first mentioned tubular member, said bowl being carried by the lower of said members, and means engaging said inner tubular member for clamping said bowl in elevated position.

3. In a lighting fixture, an upper fixed Cir conical closure of glass, a lower bowl of glass which is movable with respect to the fixed closure, an inner tubular member carried by the apex of said fixed closure and extended through said bowl, an outer lower tubular member having telescopic relation with the first mentioned tubular member, said bowl being carried. by the outer of said members, means including a slot in said inner member 9 and a pin connection carried by said outer member for guiding said telescopic parts, and means on said inner member for clamping said bowl in elevated position.-

4. In a lighting fixture, an upper fixed conical closure of glass, a lower bowl of glass which is movable with respect to the fixed closure, an inner tubular member carried by said fixed closure and extending through said bowl, an outer lower tubular member having telescopic relation with the first ,mentioned tubular member, said bowl being carried by the lower of said members, means including a slot in said inner member and a transverse pin connection in said outer member for guiding said telescopic parts, resilient means acting as washers arranged between the inner and outer surface of said bowl, means for securing said bowl to said outer tubular member, and means for clamping said bowl in elevated position.

5. In a lighting fixture the combination of an upper fixed closure, a lower shade member having a seat in its upper portion for the lower edge of said upper closure, a tube secured to said upper closure and passing through said shade member, said tube being slotted in its lower portion, a sleeve secured to said lower shade member and telescopically mounted upon said tube, and a nut on the lower end of said tube for holding said upper closure and lower shade member in assembled position.

6. In a lighting fixture, an upper fixed conical closure of clear glass, a lower bowl of opal glass movably supported with. respectto said upper fixed closure, an inner tube having its upper end passing through the apex of said upper closure, an upper capmember engaging the upper end of said tube, said inner tube being extended through said bowl, an outer lower tube of larger diameter than said inner tube and telescopically receiving the latter, means for securing saidbowl to said outer tube, means for guiding said telescoping tubes and arresting the descent of said bowl, comprising slots in said inner tube, and a transverse pin engaging said outer tube, and slidable in said slots, and clamping devices on the lower end of said inner tube for retaining said upper and lower glass members in assembled position.

7. In a lighting fixture, an upper fixed conical closure of'clear glass, a lower bowl of opal glass movably supported with respect to said upper fixed closure, an inner tube having its upper end passing through the apex of said upper closure, an upper cap member engaging the upper end of said tube and provided with an eye, said upper tube being extended through said bowl, an outer lower tube of larger diameter than said upper tube telescopically receiving the latter, means for securing said bowl to said outer tube, means for guiding said telescoping tubes and arresting the descent of said bowl, comprising slots in said inner tube, a transverse pin engaging said out-er tube and slidable in said slots, clamping devices on the lower end of said inner tube for retaining said upper and lower glass members in assembled position, and a seat in the peripheral upper edge of said lower bowl for the reception of the lower peripheral edge of said upper fixed closure.

8. In a lighting fixture, an upper fixed conical closure of clear glass, closed at its apex and having its outer surface provided with a series of reflecting prisms, arranged in annular rows, the siz es of said prisms decreasing from the base of said closure to its apex, a lower bowl of opal glass movably supported with respect to said upper fixed closure, an inner tube htving its upper end passing through the apex of said upper closure, an upper cap member engaging the upper end of said tube and provided with an eye, said upper tube being extended through said bowl, an outer lower tube of larger diameter than said upper tube telescopically receiving the latter, means for securing said bowl to said outer tube, means for guiding said telescoping tubes and arresting the descent of said bowl, comprisingslots in said inner tube, a transverse pin engaging said outer tube and slidable in said slots, clamping devices on the lower end of said inner tube for retaining said upper and lower glass members in assembled position, and a slot in the peripheral upper edge of said lower bowl for the reception of the lower peripheral edge of said upper fixedi closure.

EDGAR A. GILLINDER.

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