US1820797A - Aisle light - Google Patents

Description

Aug. "25, 1931. HAMILTON ET AL 1,320,797

AISLE LIGHT Filed Dec. 26, 1929 INKENTORS 7 Gauge Lilian 621123511 l Jar: jjrlwari W Chahrn' an A TTORNEIGS I stones H. rAivii ron Ann EDWARD, W. cHAPMAjrI; or eitAlxm almafmcnmmj "AssIGNoRs TOJAMEZR-ICAN sm'rINGcoMImrT -YforeRAnn RAPIDS MIGHIGA'IQMAJ,

CORPORATION or new JERSEY AISLE Lrenr pease filed December 263929. ScrialNo; @6542. 1

The present invention relates toligl1t-- I ingfmeans, particularly such as are employed for lighting; the aisles-of theatres and the: "like; and its object is, generally, to prov de an aislelightimprov'ed in certain respects hereinafter appearing; I and more particularly, to provide an improved lamp chamber f having awall perforated for the emission of light.

structurehereinafter particularly described inthe body of this specification and illustratedby the accompanying drawings, in.

which Figure 1 is an elevational View of the] outer sideof the upper-portion ofa'seat or chairadja-cent a theatrelaisle, and provided -and i I a V ,r I

Figure 4 is a longitudinal sectional view of the same, taken-online of Figure Inthe se drawings the lighting meansis.

with anaisle light; r

shown applied to .the aisle-side of a theatre seat. This seat hasthe upright end or supporting member 1 (preferably a metal easting) and the back support 2, This seat end" has formed'therein' achamber 3 having an opening (the elongated light-emittingslot) 4 extending downwardly and, outwardly r from the chamber to the outer'side of the support. 1

Inthis chamberis an electric lamp 5which', in the particular embodiment ofthe lnvention shown, is mountedv in a sheet metal casingb removably seated insaidchamber. 'A

cover plate 7 preferably a sheet metal stamping isremovably seatedon the ledges 8 of the T seat end 1 adjacent the opening 4, this plate thus extending across the'said opening. The said plate is perforated, having num'er- L Ious round openings 9 therethrough, these openings being disposed in rows; the openings in one row being inl staggered relation with those in the adjacent rows as shown, and being positioned so close together that This object is attained by, "and the inven I tion dfinds preferable embodiment in, the

bottom plate of the lamp'chamber; V

the rays'oflight passing therethrough froin u the lamp will be blended thus casting no 1 v shadowson the aisle floorytheimperforatd minish to a desired degree the amount of .portion of the platehowever serving to di-' i" r r i light shed on-the floor. These openings 9 desirably have-surrounding short peripheral fiangeslO extending from-the outer surface i i I ofthispla'te7. v

The disposition of theiround tapered or conical openings-staggeredin rows permits more lightito be shedfthrough the plate than other manner, and 1 the i rays" of light issuing from the several openings will more perfect could be emitted through aplatejof the same area having the openings arranged inflany' ly blend withone another; thus preventing i shadows being cast 'on the floor of the aislef.

v and illuminating anarea of theaisle more uniformly than'can be done by light emitting openingsjof any other, shape, Whether arranged in staggered relation or uniform parallel rows or any other arrangement. 1

The light emitting openings in their stag gered relation are arranged so'that the adjacent portions of the openings ofthe adjacent rows have a common intervening wall.

The peripheral flanges which surround the light emitting openings at the outer ends ini I v crease thethickness of the plate at the openings, so that a plate of extreme thinness and cheapness canbe used and yet at the same time possessthe advantages of a thick and strong plate so far as the light] emitting i openings are concerned. When" thelplateis thick at the light emitting openings the light f shed through an opening in the plate is j directed in a more nearlystraight line than if the same opening were formed in a thin plate. 1 It will thus be, seen that the peripheral flanges surrounding the light emitting openings increase the thickness of the walls of the opening and strengthen the plate and at thefsame time increase the eflectiveness in emitting light rays. When the conical light'emitting openings taper outwardly, more parallel rays from'the lamp reach-the wider or inner end of the I opening and are reflected or directed down wardly on the floor, than is possible with log b l 1 light emitting openingsof anniforin diameter equal to the diameter of the outer ends of the conical openings. Thus a thinand cheap plate. having conical openings with 5 peripheral flanges is strong enough for prae tical ancll yet properly diffuses thezlight Without casting shadows and obviatesv the. .v .e

necessity of employing a much thicker plate, 7 which is necessary When'the'light emitting 19 o frent'uigs are circul'ai' 'andiof uniform diameter at the ,inner and outer faces of the plate.

' What is claimed is: 7

A theatreseat having a chamber containing a lamp and provided with a downwardly extending opening, and a plate extending aeros s'the opening and havinglightemittingv openingstherein arranged in: rows the openings -i'n the. rows staggered. an'd'arranged close together with the adjacent porgg tions ofthexopenings having acommon separating WEI-1L! said; light emitting openings be" tapered outwardly andhthe plate: being I provided at the; outer endsofthe openings; With peripheral flanges projecting frnmthe .,-;.0u-'.terfaee ofthe plate. T

Intestim-ony whereof Wehave' hereunto set ourhande at GmaniRtpids; hfiehigan this 16th day .of'December 19291 1 vnoneeeIr-HAMILTON.' ggzg "EDWARD CHAPMAN.

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