US1800857A - Electric lamp fixture - Google Patents

Description

April 14, 1931. c. BROWN I ELECTRIC LAMP FIXTURE Filed Jan. 14, 1930 vfllflllllllllllfill INVENTOR Char/P5 ZnnessBrom find}, ATTORNEYS Patented Apr. 14, 1931 CHARLES INNESS BROWN, or conic-us Vintners, new YORK ELECTRIC LAM]? FIXTURE Application filed January 14, 1930. Serial No. 420,698.

This invention relates to lamp fixtures adapted more particularly for use in conjunction with electric incandescent lamps. More specifically, the invention contemplates the provision of a lamp fixture forsupporting a lamp and shade or reflector therefor in simple and attractive fashion, and in such manner that the shade may be removed or replaced with facility. To this end a lighting 19 fixture is provided wherein the shade. or reflector is supported between the wallsof a channel shaped holder.

The invention is especially applicable to electric desk lamps which utilize a shade or reflector of inverted trough shaped configuration supported at the rear for directing the light rays downwardly upon the desk free from shadows. The invention will be described particularly with reference to a lamp so of this type, although it will be obvious thatthe novel features thereof may be applied to other types of lamps as Well. i i

In desk lamps of the type specified here tofore in use, the means for supporting the 51 reflector in each instance contains certain objectionable features. With some constructions at present utilized, the rear wall of the shade has affixed thereto, protective metallic plates covering or surrounding a border to opening therein for supporting the shade upon a bracket affixed to the standard, which bracket also is adapted to support the lamp within the shade. In other constructions the lamp is provided at its edge with a hooded lateral projection adapted to be housed within a channel shaped support mounted upon a standard. Special clampingmeans are in this instance provided for retaining the shade in position.

The first of the arrangements mentioned is open to the objection that a special tool or wrench and some degree of mechanical skill are required for removing or replacing the shade. In the last instance mentioned the clam oin means arovided is cumbersome and somewhat difiicult to manipulate, and

with all of the arrangements the supporting structure for the shade appears to be relatively expensive as compared to the function performed.

most economical sort, the holder for the shade consisting merely of a single sheet of resilient materlal having the desired configuration. Likewise in the preferred embodiment as regards the shade, avery slight offset or transverse displacement of the wall ad acent the'edge is all that is required for clamping purposes.

Inasmuch as with the present invention the holder retains the shade in position by means of a resilient action, the removal or replacement of the shade is accomplished quite easily, requiring as it does only the exertion of a slight force to overcome the spring-likc action of the clamp. a

One of the features of the invention consists in the formation of a suitable conduit in the sides and base of the holder for conveying the electric wires from the supportmg structure or standard aflixed to one side of theholder to an electric light socket affixed tothe other side thereof without interference with the lamp shade when inposition, while at the same time providing a structure of neat and harmonious appearance.

In accordance with the invention, the

. shade is supported at its edge midway length- W1se of its rear side. To this end the shade at this point is provided Witha substantially vrectangular offset or transversely displaced portion extending from the edge and terminating in a sloping shoulder furtherest therefrom. The offset is such as to provide a reoess to the outer surface and a corresponding embossment upon the inner surface of the shade.

The holder which as stated is made of a sheet of resilient material, preferably metal,

is formed into a narrow channel section having its sides spaced apart corresponding to the thickness of the shade. The sides of the holder are further provided with an offset intermediate the aligned ends thereof such that i the inner walls of the sides will conform to the contour of the shade in the region includ ing the offset portion and extending a short distance on both sides thereof.

As a result of this arrangement the shade support.

is adapted to be supported at its edge by having a portion of its side including the offset housed between the resiliently engaging sides of the holder. Since the offset of the shade when properly supported is situated within the corresponding offset of the holder, longitudinal movements. or shiftings of the shadeare thus prevented.

The sides of the holder within the offset are preferably higher than at the ends, the heights being so chosen that withthe shade supported in the holder, the side portion thereof engaging the recess in the outer surface ends just below the sloping shoulder which connects the offset in the shade to the side proper. On the other'hand, the side portion of the holderengaging the embossment upon the inner surface extends over and curves in conformity with the shoulder.

As a result of this arangement the shade is not only resiliently clamped against movement in a'vert'ical direction, but is also prope'rly braced against thebending stress set up due to the fact that the center of gravity of the shade is not vertically in line with its An electric light socket is affixed to the side portion of the holder which engages the inner embossed surface of the shade so that the'light source will be properly shaded thereby. A supporter standard is afiixed to the opposite side of the holder for supporting the fixture. In order to provide a conduit for the electric wires extending from the standard to the light socket, a channeled re- "c'ess is formed upon the inner walls and bottom of the holder, extending transversely thereof between the points of afiixment of the standard and the light socket, where suitable apertures are formed'in thesides for leading the wires away from the holder. The recess formed upon the inner surfaces of the holder appears a corresponding embossment or piped pro ection upon the outer surfaces th ereof.- The wires when thus situated within the, recess, lie below the inner clamping surfaces and hence do not interfere with the housing of the shade within the'holder. .Furthermore, the piped projection upon the outer surfaces offthe ho'ldergives a pleasing and balanced appearance thereto.

.Havingthus described the invention in general terms, a detailed explanation will .nowbe-given with reference to the drawings of which:

Fig. lshows affront elevation of the 'lamp fixture .partly inlsection taken along the line 1-1fiof Fig. 2. v

Fig. "2 shows a sectional view taken along Fig. 3 :shows'a sectional view taken along the line 33 of-F i-g. 1. I v f ;Fig. 4 shows :a fragmentary sectional View of a standard or other supporting structure 1 terminates in one-half 2 of a spherical lock nut 3-having serrated teeth-engaging the op.

posite half 4 clamped thereto by means of a screw S, the portion 4 forming part of a bracket aflixed to one side 5 of a channel shaped holder 6. The holder 6 supports at its edge a shade or reflector 7 of inverted trough shaped configuration adapted to shade the electric light sources 8 and 9 screwed into theopposite sidesof a'double socket 10f e The shade 7Jhas located midway len thwise'of its rear vertical side and exten ing inwardly a certain 'distanceffrom the edge thereof, a substantially rectangular portion 12 offset or transversely displaced inwardly, constituting a recess in the outer surface and an embossment upon the inner surface of the shade. The displacedportion 12 is joined on three sidestothe main body of the. shade by the sloping shoulders 18', Hand 15.

The holder 6 made of a single sheet of resilient material and formed into *a narrow vchannel section, is provided with an offset 16 intermediate .the aligned ends 17 and 18 such that the sidesflof ;the holder conformto the contour of the shade in the region @including the offset and extending. a certain distance on both sidesthe-reof as shown in Fig.5. 1

When viewed in side elevation as shown in JFi-g. 1 the holder has the shape of a Greek cross with-the lower extension cut away,v

the. sides beinghigher within the offset than at the'ends; 'The height of the side portion engaging the recess in the outer surface of the shade is such that with "the shade clamped in positionythe upper edge '19 of this sideis situated justbelow the shoulder 15 ofthe shade. On the other hand the portion of side 11 of the holder which engages the em-' bossedinnen surface of the shade is of such height as toextend over the shoulder 1'5'being curved at its free'edge 20 in conformity with the contour of the shade as is clearly shown 'in Figs. 2 and 3.

In order to provide a conduit'for the necessary electric wires to extend from the standard 1 to the light socket 10,- a pipe'c lprojec tion 23isformed'i'n the sides and base ofthe holder intermediate the ends and extending transversely thereof between bosses 24: and

25 formed upon sides 11 and 5 respectively.

The bosses and thepiped projection provide corresponding recesses upon the inner surfaces of the holder within which is situated the lamp cord 26. The bosses 24 and 25 contain perforations 21 and 22 respectively as shown in Fig. 2 for afiixing the light socket 10 and the lock nut bracket 4 respectively to the clamp and also to provide openings in the recess for leading the wires 26 away from the holder. To this end the lock nut 3 and support 1 are of hollow construction, as is clearly indicated in Fig. 2.

Figs. 2 and 5 delineate the manner in which the lamp cord 26 and shade 7 are housed within the holder without interference to one another; while Figs. 1, 3 and 6 show the neat and harmonious appearance of the electric cord conduit as viewed externally.

A modified form of the invention consists in providing the shade with a recess or slot extending inwardly from the edge and adapted to engage a corresponding projection formed in the base of the channel shaped holder, for preventing longitudinal movement of the shade in the holder. With this modification it is not required that the shade and holder be offset, nor is it necessary that the sides of the clamp resiliently engage the shade.

I claim:

1. In a lamp fixture,a standard having one side of a channel shaped holder aflixed thereto, a light source affixed to the opposite side of said holder, a reflector for said light source supported at its edge within said holder, said reflector being provided at its point of sup port with a recess adapted to engage a corresponding projection formed in said channel, said holder being provided with a conduit adjacent the base of said channel for extend ing electric wires from said standard to said light source without interference to said refiector.

2. In an electric lamp fixture, a reflector having a substantially rectangular recess at its edge, a channel shaped holder for said reflector having sides adapted to resiliently en gage said reflector and a projection engaging said recess for preventing movement of said reflector in said holder, a standard pivotally aiiixed to one side of said holder, and a light source affixed to lllG'OPPOSllDB side thereof in operative relation to said reflector.

3. In an electric lamp fixture, a reflector having a recess at its edge, a channel shaped holder for said reflector having sides adapted to engage said reflector and conforming to the contour thereof in the region including said recess for preventing movement of said reflector in said holder, a standard pivotally affixed to one side of said holder, and a light source affixed to the opposite side thereof in operative relation to said reflector, and a conduit formed in said holder for extending electric wires from said standard to said light source. I

4. In combination, a lamp shade having extending inwardly and terminating'in a sloping shoulder acertain distance from an edge thereof, a transversely displaced portion constituting a recess in one surface and a corresponding embossment upon the opposite'surface thereof, whereby said shade said shoulder and curving in conformity therewith for res1l1ently clamping said shade against movementin any direction, a light source aflixed to one side of said holder and extending beneath said shade, and a supporting structure affixed to the other side of, said holder.

5. In combination, an incandescent lamp shade of inverted trough shaped configuration having extending inwardly and terminating in a sloping shoulder a certain disterms from the edge on one side thereof, a transversely displaced portion constituting a recess in the outer surface and a corresponding embossment upon the inner surface there of whereby said shade may be removably supportedbetween the resiliently engaging sides of a channel shaped holder associated therewith, said holder having sides conforming to the contour of said shade in the region including said displaced portion and extending on both sides thereof, with the side portion engaging said embossment extending over said shoulder and curving in conformity therewith, a piped projection terminating in bosses formed in the sides and base of said holder and extendingtransversely thereof from an intermediate point in one side to an intermediate point in the opposite side, means including apertures in said bosses for aflixing a supporting structure to the side of said holder adjacent said recess in and a lamp socket to the side thereof adjacent said embossment upon said lamp shade respectively, said piped projection and bosses forming corresponding recesses upon the inner surfaces of said clamp to form a conduit for electric wires extending from said lamp socket to said supporting structure without interference to said shade when clamped in position.

6. In combination in an electric lamp fix ture, a reflector having extending inwardly from an edge thereof a certain distance, a recess formed in the outer surface and a cone sponding embossment upon the inner surface thereof, whereby said reflector may be removably supported between the resiliently engagforming to the contour of said" shade in-tlre ing sides of the channel shaped holder assoa e there th, the s es f sa d he e. m;-

region including said recess e nbossrnent sp t i ly, for w tl s pi me s a reflector agalnst movement in any direct on,

an embossment formed upon the sides and base of said holderextending from an interindiate point of one side transversely thereof to an intermediate point on the other side, said embossment providing av'corresponding recess upon the inner surfaces of said clamp for reception of a lamp cord without interference to said shade, said cord passing through a perforation in one termination of said embossment to a supporting structureaffixed thereto, and extending through a second perforation in the opposite termination of said embossment to a lamp socket "aflixed thereto and operatively positioned relative to said reflector.

7. In combination in an electric lamp fixture, a reflector having extending inwardly from the edge thereof a certain distance; a transversely displaced portion forming a recess in the outer surface anda corresponding embossment upon the inner surface thereof l whereby said reflector may be removably supported between the resiliently engaging sides of a channel shaped holder associated therewith, said holder being made of a single sheet of metal having sides conforming to the contour of said sha de in the region including said displaced portion for resiliently clamping said shade against movement in anydirection, a recess formed upon theinner sides and base of said holder and extending transversely of said channel from an intermediate point on one side to an intermediate point on the other, said recess providing a conduit for reception of electric wires without interfer ence of said shade, said wire extending through perforations in the oppositeterminations of said recess to a supporting structure and a lamp socket aflixed respectively to the opposite sides of said holder.

8. lamp shade having extending inwarda certain distance froman edge theI-QOf, a transversely displaced portion constituting a recess in one surface and a corresponding embossment upon the opposite surface of said shade, whereby said shade maybe removably supported between the resiliently engaging sides of a channel shaped holder conforming to the contour of said shade in the regionincluding said displaced portion andexten ding on both sides thereof, such a holder the side portion engaging said embossment extending beyond the'remalnder of -sa-idside and curving in conformity withlthje inner termination of said embossment, for resiliently clamping sald shade aga nst movement 1n any dlrectlon.

59. An incandescent lamp shade of inverted trough shaped configuration haying a subi recess in the outersurfaceandfa correspjo'ndstantially rectangular transversely displaced pa a e esti i'eei waid raiidt rxiiinat x in a sloping shoulder a certain distance from the edge one side thereof, constituting a in mrpsmeeu n ne a es i shade, whereby the same may be removably supported between tlie resiliently engaging 7 si of wane sh pe e qi or 'h e to the contour of said shade the regioliineluding said displaceizl portion' and extending a certain distanceon both sides'thereof,

th pertio 'o id esil g said 11 said shoulder.

10. A. holderfor supporting atits edge a lamp shade, said holderbeing of narrow channel shape with resilientsides containing an offset portion intermediate the aligned ends thereof, one side extending within said offset beyond and being bent over at its end toward the other leaving suificient spacebetween the opposededges inserting said shade, the surface portionsof which adapted to engage said holderare shaped in conformity with the-inner walls-thereof forresilientl y clamping said shade against 7 movement in any direction. V a j 11. A. holder for supporting at its edge alamp shade, said holder 7 being "of narrow channel shape with resilient sides containing anofiset portion between the alignedends thereof, one side ,extendingwithinsaid offset beyond and being bent overat it's'lend toward the other leaving-suiiicientyspace between the opposed edges for inserting said shade, the surface portions" of which adapted to engage said holder are shaped in conformity with the inner walls thereof for resiliently clamping said shade against movement in any direction, means provided upon 'onejside of said holder for aflixing alight socketfa'nd upon the other side for' affixing a support thereto, anda conduit adapted to receive-a lamp cord extending between said means transversely of said channel following the side and bottom contour thereof.

l2. A holder for'supporting at its edge a lamp shadeof rigid structure, said holder being madeyof a's'heetfof resilient material formed into a narrow channel section with sides containing an ofiset portion intermediate the aligned ends thereof, one side extending within said,,oifs et beyond and being bent at its end toward the other leaving sulficient' space between "the opposed edges for inserting fsaid shade, the surface portions of which adapted to engage said holder l are shaped in conformity with :the inner walls thereof for'resiliently clamping said a ai stme eeetinaayk i eti erm ee is eluding an aperture in one side of said holder for affixing a light socket thereto, means including an aperture in the opposite side of said holder for aflixing a support thereto, and a piped projection formed upon the sides and bottom of said clamp extending between said apertures providing upon the inner surfaces of said channel a recess adapted to receive a lamp cord extending from said support to said socket Without interference to the clamping of said shade.

13. In a lamp fixture, a reflector containing a substantially planar section adjacent an edge, a recess formed in one surface of said section and a corresponding embossment upon its opposite surface, a channel-shaped holder for said reflector having flexible sides conforming to the contour of said recess and embossment for supporting said reflector against movement through resilient engagement therewith, means supporting said holder and a light source associated therewith shaded by said reflector.

14. In a lamp fixture, a channel-shaped holder having flexible sides containing a transversely displaced portion intermediate the ends thereof, a reflector supported by said holder, said reflector containing an offset portion adjacent an edge corresponding in di- 33 mension to the transversely displaced portion of said holder, whereby said reflector is maintained against movement within said holder by the snap-action thereof, means sup porting said holder, and a light source shaded 35 by said reflector.

15. I11 a lamp fixture, a channel-shaped holder having flexible sides containing a transversely displaced portion intermediate the ends thereof within which one side extends above and curls slightly toward the other, a reflector supported by said holder, said reflector containing an offset portion adjacent an edge corresponding to the transversely displaced portion of said holder,

whereby said reflector is insertible in said holder by snap-action thereof, means supporting said holder, and a light source shaded by said reflector.

In testimony whereof I affix my signature.

CHARLES INNESS BROWN.

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