US1591190A - Reflector - Google Patents

Description

July 6, 1926. 1 1,591,190 J. l.. sTA1R REFLECTOR Fned veci. 6, 1923 2 sheets-sheet 1 Lr I M/mv: -I 'mb/5min 1 @XML M 95W@ July 6, 1926. v 1,591,190

` l J. L STAIR REFLECTOR Filed Dec. a, 1923 2l Sheets-Sheet 2 /yvmfof j C02? Z,- WV

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Patented July 6, 1926-,

"JACoB L'. STAIR, or cHIeAso,`1LnINois.i-f45A: f

i f ,nnrnnrom f .-Appncatiqnmealnecemter'aeza. .serial@ini.tiernajL I ,iMy present invention relates to reflectors and has for its principal object thev provision of an 4integral reflector that-is so-shaped;v that i figure orother Yarticle of merchandise. article is usually -so placed that it receives the spot beam directly `upon it, whilethe surrounding portions of the window'display;

itwill yproduce a shaft or beam of parallel light .rays thaty may be directed upon, anob- Jectto' be illuminated, and at-'the-same time will throw a general ory scatteredflood` of light' that will illuminate the objects or fittingsadjacent to the rst-mentioned object.

The reflector is especially designed for 2 use in the illumination of show. windowsiirthe fronts of stores-and like places v-vvhere a gen'- eral illummation of the rwindow, the lfloor :and background thereof is desired, as ,wellV as t0 concentrate astrongbeam of light upon some Y certain article ofV wearing apparel ror This sought to be displayed.

.blind or dazzle 'the observer.

Another object of my invention is t0 provide a reflector that is'so shaped that thetip of the lamp'or bulb isvso positioned-therein that the reflector, with ythesocket and litting, or bracket, may be laid face down upon a table or other support and the lamp, whchl is usually of fragile glass, willnot be en-l dangered by striking against the support or table. In other words,fthetip of the lamp or bulb is back of the Vplane of the outer edge 0r rim of the reflector and is protected thereby.- vIt is afurther object 0f my invention to yprovide a reflector that will have the light bulb or lamp' so positioned thereinl flector and 'continuing concentric thereto from. the lower edge of the dome portionl that the light rays emanating therefrom will be shielded fromthe eyes of personsy who may be observing `the same from one side,

so that the glare from the lamp willfnot It is 'also an object of my prevent invention to provide a reflector with means that will break up the light rays that are directed outside of the rcenter spot-beam so as to prevent the occurrence of a bright ring or 'halo surrounding i `the spot beam;j Other objects will be apparent to persons skilled in this art, and I prefer tocarry out'myirnvention andaccom` plishV the yaforesaid ob] the 'mannerhereinafter described'. Y `I Reference will now belinadeto the acig'drawingsthat v`form a part y company of this.l speclfication, in which yfv`Figurejl .is afside elevationfofqa ieflec.

i551v ects'in substantially ,i

tor madeeinaccordance with my invention.'

portionofthe reflector, v. y

Fig. 3 iis .an enlargeddetailffshowingj the Fig;` 2 is n axialy vertical section o f al manner-lof corrugating oiffri'ppling'the skirt ,ofthereflector. j "lteferring .to the., drawings/,Iliave e1nployed` similar Y referencecharacters ltoV` designateglike parts whereverf'they-Q occiii ferringfto thedrawings it will be seentliel reflector is V:preferably of concavo-convex shapeand has a dome-shaped portion Athat is of'parabolic curvature sothat it will rethrwe'lwut vt111e; Several-:Kleve and. by De iiectparallellight rays therefrom when the Y lighting unit or Ylampis positioned at substantially'the axis of the parabola. The upper portion of this dome AA is provided with',

a central opening to accommodate the lamp i or bulb, and the reflector surrounding this 4opening is provided with an upwardly taperingv neck portion B, the yupper edge i thereof being flared outwardly to provide a rim C with: which'the holder or clamping unitjco-operates `to 'support the reflector yinV position. 'This tapered neck-.is of-such di-l `mensions that the bulb may be readily accommodated andprovides azspace between the bulb: and the `reflector for the circulation of air therebetween. the reflectorso far described is smooth and is preferably silvered `to assist in reflecting all of the light rays 'reaching thek surface thereof from the lamp or bulb.

`lilxtending parallel yto the. axisof the re# E to Vwhich colored lightscreens .maybe se#` cured whenever a shaded or c0lored1illumination is desired. Theskirt portionl) just described is provided with obliquefcor-Qv rugations F Vthat are formed on a compound The interior of v curve as'delineated in detail in Figure 3,V

andthis skirt is also waved slightly as at r` f G, the waves or undulationsV being disposed transversely of Athe"L skirt and extending longitudinally Vof the vaxis bf 'the 'cylinder formed by said skirt. i, and undulations cross each other andtend to break up the light rays so as to thereby prevent from forming a bright ring or halo of light around the area illuinitiatedv by the beam; ln other Words,rthe lightv rays reflected from theV sliftyaie scattered "and bro'ken up to Such irtit thatfaiieiffen tone 'of light is projected theifefiioiii'. It is obvious that kother upfth'e light ir'iayl be used unen th fskrt',jbnt Il pret-er, in @any'ing` invention; Lfteeinem the method out my y *and* described, 'land I Ytherejlbre desi-jre it nfuesteed 'that such other 'methdds'ar fully .cvonte'r'nplated as coming v d vthe scopeof my appended claims.

' 'what i ein-min; Y f

n rene-tei eem-@neng a parabolic itf- I fletrlg elementbanda cylindrical reflecting These corrugations the rays emanating from the .skirt-v Waves and parallel corrugations oblique thereto.y y f 2; A reflector comprising a hollow body the central inner reflecting surface ofwhich 1S Qlllled to direct light therefrom in parallel rays, the edge portion of said body formed With a skirt of true cylindrical shape skirt extending fromthe outer edge theren f of,r said concave element provided .with a `'smooth reflecting surface and said .skirt formedwith Waves extending longitudinally Yand corrugations extending obliqu'ely. thereto, whereby said concave element 'will project direct light YraysV to formv a Zone of' brightill'uniination and said skirt will project a halo of diffused illumination outside of said bright zone. e v

Signed at. Chicago, county oflGo'ok and State of Illinois, this 21stday of November,

1923. Y. v y.; f JACOBTST-AIR'.

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