US1845035A - Electric lighting appliance - Google Patents

Description

Feb. 16, 1932. M. BOLTUCH ELECTRIC LIGHTING APPLIANC E Filed June 26, 1930 INVENTOR. M4): Bolf'uc/r ATTORNEYS.

2% be obvious and in- Patented Feb. 16, 1932 1' srA'rss; P TENT orrrci-zy.

BOLTUGH,. or

ELECTRIC. mcnrmcnrrnmncn Application filed June 26, 1930.4. swarms; 463,860.

This invention relates to electric lighting appliances, and more particularly is directed to an improved light distribution means 7 adapted to be adjusted and applied to lighting fixtures of conventional construction.

Among the objects 'ofthe invention is to provide a light distributing means of im-- proved construction comprising few and simple parts assembled to'forma neat appear- 10 ing structure, which shall be readily adjustablek to fit various sizes and forms of lighting fixtures, which shall: afford a simple means. for'distributing the light 2 from inv candescent lamps to' provide indirect and di- '].-5 rect illumination blended; to give pleasing effects,which shall be cheapsto manufacture, and; practical and eflicient to a high degree in use. V a

Otherv objects of thisinvention will'in part part hereinafter pointed out. i v

The invention. accordinglyconsists in the features of construction, combinations of elements and. arrangement of parts which will be exemplified in theconstruction hereinafter described? and of which the scope of applica tionwill be indicated in the following claims. In the accompanyingdrawings, in which is shown one of. the various tive embodiments of' this. invention,

Fig. l is a front elevational view ofa fragmentary portion of a' lighting fixture equipped with the improved light distributing means embodying. the: invention, one brancharm ofthe fixture being cut away.

Fig. 2 is atop plan view of the structure shown-in F ig. 1 showing one lampreinolved from the socket, and f Fig.1 3 is a cross-sectionahview of the extensible portion of the holder corresponding to asection taken on line 3-3 in Fig. 1.

Referring 'in detail to the drawings, 10 denotes a fragmentary portion of a conventionally constructed electric lighting fixture, such for example as hung from aceiling or forming part of a standard of a table or bridge lamp, equipped with the improved light distributing means for producing in-' direct and direct illumination embodying the invention. 1

possible illustracally extending pipes-11 which join at a junctionpiece 12, the lattcrhaving a plurality of branch arms 13 radially extending therefrom.

The outer ends of said arms 13. terminate in lampsockets 14, each carrying an incandes cent lamp 1 '5. Lamps 15 here'shown, are of the so-called pear-shape type havinga bulbous portion 15a enclosing-a closely wound fi lamentlfib and an elongated basestem 15c.

Y The lighting fixture -10is Wiredinythewcll understood manner, (not shown) by drawing conductor wires through the pipes l l, junction piece 12, branch arms 13 -and connecting same to the lamp sockets 14 for sup I said member- 16 in an adjustable position along the pipe 11. i

A plurality of spaced holders 1-8, one for each lamp 1 5-, have ends l8agpivoted at 1 9' on said member 16, the other orfree end portion 'of each holder terminating in a ring wherethrough the incandescent lamp 15 e'ze' tends-,.as shown inFigs. 1 and 2, an opaque shade 20havingan interior highly polished reflecting-surface-20a, is seated on each ring end portion 186, said shade extending only about the lamp bulbous portion'1'5a, for refleeting the light upwardly. The base stem 150 of the lamp' projects below saidfshade and is exposed, permitting the light to pass below the'shad'e. The opening 205' of the shade through which the lamp 15 extends,

is made to permit the lamp base stem 150 to freel'ypass therethrough, but -i's'preferably of less d'iameterthan the lamp bulbous portion 15a.

The holder 18 may be made with suitable extensible means for varyingthe length thereof and also for angularly adjusting the plane ot the ring endportion 18b and shade with res'pect to the pivoted end 1'8a'and the. lamp- 15 As hereshown, said means comprises a coupling 21 which is provided with passages 21w through which extend the'separate mid-portions 18c and 18d'of'said hold Said fixturelO is seen tocomprise verti- BROOKLYN, New Yonx, ASSIGNTOK. BY MESNE nssxciwmnn'rs To EANNIBALE s. IMZBRO, or YORK, N. Y.

The practical operation of the invention will now be apparent. To the stand or hang pipe 11 of any conventional lighting fixture 10 having extended branch arms 13, each of which terminates in a lamp socket 14, the center member 16 is attached, holders 18 are mounted on said center member with the ring end portion 18b of each holderpositioned over a lamp socket 14. An opaque shade 20 is seated on each of said ring end )ortions 18b, said holders and center member eing adjusted so that on fitting the incandescent lamps 15 into the sockets 14 the shades are positioned about the bulbous portions 15a of the lamps and the stem portions 150 thereof are left exposed. Most of the light from each filament 15b is reflected by the shade 20 upwardly and is adapted to be utilized as an indirect source of illumination. A less portion of the light from each filament passes through the stem portion of the lamp and is available for direct illumination. By adjusting said holders 18 and shades 20, with respect to the lamp the amount of direct illumination can be varied and the indirect and direct illumination blended to give a pleasing and desirable lighting efi'ect.

It will thus be seen that there is provided means in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

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

1. An electric lighting fixture having spaced branch arms, each terminated by a lamp socket carrying an incandescent lamp, an opaque shade for each of said lamps, said shade being positioned about the bulbous portion of the lamp with the stem portion thereof exposed to provide indirect and direct illumination, radially extending supports for retaining said shades, and means for independently adjusting each support for varying the positions of the shades relative the lamps to change the effective proportions of indirect and direct illumination.

2. In combination with an electric lighting fixture standard having spaced branch arms, each terminated by a lamp socket carrying an incandescentlamp,of a center member mounted on the standard, a plurality of spaced holders, each having one end portion extended to the incandescent lamp, an opaque shade seated on said end portion positioned about the bulbous portion of the lamp with the stem portion thereof exposed to provide direct and indirect illumination, the other end of said holder, opposite said end portion being movably supported on said member, and means for adjusting said member to vary the position of the shade relative the lamp for changing the effective proportions of indirect and direct illumination.

3. In combination with an electric lighting fixture standard having spaced branch arms, each terminated by a lamp socket carrying an incandescent lamp, of a center member mounted on the standard, a plurality of spaced holders, each having a ring end portion wherethrough an incandescent lamp extends, an opaque shade seated on said ring positioned about the bulbous portion of the lamp with the stem portion thereof exposed to provide direct and indirect illumination, the other end of said holder opposite said ring portion being movably supported on said member, and means for adjusting said member to vary the position of the shade relatlve the lamp for changing the effective proportions of indirect and direct illumination, and adjustable extensible means for varying the length of each holder.

4. In combination with an electric lighting fixture standard having spaced branch arms, each terminated by a lamp socket carrying an incandescent lamp, of a center member mounted on the standard, a plurality of spaced holders, each having one end extended to an incandescent lamp, an opaque shade seated on said end positioned about the bulbous part of the lamp with the stem thereof exposed to provide direct and indirect illumination, the other end of said holder being movably supported on said member, and means for adjusting said member to vary the position of the 'shade relative the lamp for changing the effective proportions of indirect and direct illumination, said holder having a portion between said ends for adjusting the latter with respect to each other and for extending the length of the holder.

In testimony whereof I aflix my signature.

MAX BOLTUCH.

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