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Publication numberUS1175420 A
Publication typeGrant
Publication dateMar 14, 1916
Publication numberUS 1175420 A, US 1175420A, US-A-1175420, US1175420 A, US1175420A
InventorsH. Baker
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1175420 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

C. 8.50m & s'. H. BAKER.



CARRIE sworn rom), or oAK'Lnnn, hun saam,FL-.HL nannitgor-rAsnnr-:Nnf

cnmronNIn.A i

vLAMP AND nnmnron rnlnnnron Y.To fall whom it-may concern.'

'Be it'known that we, CARRE Sworn Folin and SAMUEL BAKER, bot-h citizens of .the @United States, residing, respectively, at Oakl 5 f`-1 and .countyof Alameda, and State. 0f Cali" di'l'use rays evenly throughout the zone to be .i illuminated, and avoid the focusing in 'certainspots of any of the light rays. n

Lamp reflectors as ordinarily constructed light-rays, and the light projected from such, -standardreilectors or lamps providedwith f thesame is, in-.many instances, objectionable ".,jand `for certain uses highly' undesirable, as i fon-instance, in headlights for automobiles land other. vehicles, where the use of high 'power lights is desirable, but the. glare of the lightA temporarily blinds persons facing 'the same, and results in many casualties, 'as

. whenv thesuch as are usually employed on automobiles ,andthe-lilik, With lamps or reflectors' orf- -ganized in'faccordance with the invention, athis trouble is entirely eliminated, 'as the 35 diffused light' emitted does not have the Lblinding eil'ect upon aI person facing the g same, .no part of the reflector tending to bring the rays to a sharp focus. Lamps or -freflectors'organizedin accordance with the ,$0 invention-.may be employed wherever any artificial light is needed` for .either interior or 'exteriorl illumination, the/zone .of ray 1 projection being forward of the reflector and such zone extending in every direction forward of the plane of the extreme forward portion of the reflector, jthis distribu- .tion rendering lamps provided with the -hereinafterdescribed reflector adaptable for service. as street lamps as Well asfor vehicle headlights and many other; purposes.

With the above andother objects in View, including rela-tive simplicity and inexpensiveness in construction, .length of-life or durability and general eliciency, the inven- 35 tion consists in the novel and useful provi- Specification of Letters'atent.

Application'led June 14, 1915. I Serial No. 33,9j1 0.

State of California, have jointly'i'n-V i ect onlyldiffnsed light rays and proj ectsuch are so designed as. to provide' a focus for the ing, iu'the fembodiment drivers of' meeting vehicles are suddenly. confronted by powerfulheadligh tssuitable.

' vlate`n' ted Mar. 14, 91 6. .I

sion, construction, l formation, coir'ibination,l

association ,and relative arrangement ot'A parts, .members and features, all as.hereniafter. described, shown inthe drawing' and f inallypointed out iniclaims, j l In the drawing: vFigure 1 is a front elevation ofa lamporganiz'ed in accordance with the invention; Figi' 2'i`s a side eleva-tion fof the same; Fig. centralhorizontal sectional View taken yupon the-line a'csaf, (55

Fig. 1,'and-,looking in the-direction of the appended arrows, this view-.showing the reilector, lamp casing-and glass frontin'section; Fig.. Iiis a central vertical, seetional view through the glass i''r'ont, the Viewv being Ataken-upon the .line azw, Fig. 1, andlooking in the; direction ofthe appended arrows; 'and Fig.

5 is a fragmentary plan view automobile provided lwith a pair of lamps or- 75 gamzed in accordance With the invention, and so mounted as to properlyillu'mnate l" 1tlile/roadivay or course taken by an autoino- Corresponding designated by the same 'reference characters. -eferrmg wlth f articularity to the draw of the invention" therein shown, A designates/aflieadlight or.; jganized to embody the invention, B desig 85 'nates a reflector therefor, C- designates illuminating mea-ns," and D- designates supporti ing means for such headlight. inthe vform of the invention shown in the drawing, the headlight A comprisesin ad- 99 dltion to the reflector B andA illuminating! means C, a casinga provdedwith a rim b hinged as at o to the casing o, and ja'fro'nt glass al mounted inv the rim b, and forming, together with the casing a, a' Weatherproof 95 housing for the reflector and illuminating means with other attendant features. l `The rciie'ctor B comprises a concave body of suitable materialV which maybe of polished metal, silvered glass, or any other 10U reflecting material, such reflector B resembling inf'gcneral contour, the human eye, theV periphery or forward lip 'ofA the reflector preferably being formed and curved identically as are the upper1 vand 105 lower eyelids of the human eye, this forma.- tion making' it possible to insure a wide angle distribution of the light rays emitted, the zone into-Which lthe rays are projected being included in' the Wide angle, `which 110 reflector, lamp, casing and `70 partsin all the iigure's are' 80 angle is approximately 180 degrees.' The Wide angle distribution of light rays takes place in every direction forwardof'a plane in Which the reflector periphery is in partlocated. The forward lip 6 or periphery of ithereflector'is arranged in a verticallydis posed which, inthe .present instance, has its center of 'curvature at 4the rear ofthe lamp; The

lip 6` .is preferably rounded as at 6, 'and the reflector is so formed that no focusving of the, light rays at any substantial-ly cylindrical surface point will ocr our, particular attention bein .given in the Vperipheral lip portion 6d. 'formed with' formation jof therefiector to t e part (Wimmediately behind the. illuminating means C,

so that 'no rearwardly ranging rays from such illuminating means'. could 4projected .straight ahead from such poritioi'rb of the ector B. Assuming that vthe lamp is in I peripheral portions 6 and 6a' of i' `the.'.overhanging upper 4and the position 'shown in thedrawing, the` side are rearward' lower pedue to the 'lip portions 6@ and e# The ripheral4 eyelid-like formation of the reflector.

.a slightly different curve than the peri heral flip' portion 6e.

i 5 The il uminating M ansCis shown as in eieceraiighi-r, negras bulb s' of which is iwufd 4portionf-Bl",4 suchforward portion '8n 'preferably .of ellipticlformation at its'for- {bei-ng' positiouedcentrally ofthe reiiector 4and' approxima. and lowe' 35 erably heavily erred-,as at 8', this frosted vforwardlyfrom the base-8c of the lamp to {.fsii'eh point -a's is' necessaryto shut' o or ,40

4d irn "the "rearwardly ranging rays of the' ly inline with lthe upper peripheral lipfs 6 and (if thereof. The glssbulb 8 ofthe electric .light is preffrosted' or otherwise dark- 'f-ligllt, th'us assisting in preventing .the afo1e of the forward-portion,"such shading 8El Vcovering 1-producing'fportio .'Sfof the lamp.

The support Apreferablyv comprises bifurcated .bracket 9 betweenthe-'furcations and 9b of which the' lan1p-`is sul'ip'orted, as by means of bosses' 9c provided onfthe I {lam-p casing, suchfbracket ser-ving as a cond vehiclef properlyf'secure the glass front'fl and its rim" b"in closed position against the cas# ing a., it being understood that such glass supporting rim 'b' and the complementarily formed casing edge ll'eonform as nearly as possible to the eyeliddike periphery of the reflector, so as not to in' any Way interfere with the. pro]ectiotn of light raysfrom vsuch rele'ctc'nV Y 4.

of .the reector is surf-ace extending yvenient means 'of securing the-.lamp to a ps,

, n v.LYconventional "latch v10-is provided 'to lip of the 4lamp preventing an strong lliglht In Fig. 5 is illustrated the preferred marmer of employing a pair of lamps'organized to embody the invention vir/hen such lamps are tobe used fore stated, the peripheral lip at'one'side edge as automobile headlights. As hereinbeof the reflector diiers in curvature from the peripheral lip at the other 'side edge refiector, conforming in to the formation or arrangement ofthe' eyelids of the human eye, and when the lamps are tobe V:1s-shown in Fig. 5, the lampsarearmnged. so that the side peripheral-.lip lhavin the greater curvature is'outwardlydispo with respect to the longitudinal axis ofthe automobile, and furthermore,the llamps maybe ofthe faced slightly outward'so as to thoroughly light up the sides o fjtlre road as -yellas the'vv roadimmediately ahead oif'the autgn'iobileghe lamps not :faced slightly vouteven Weret ward, the wide anglev light distribution, namely,v180 degrees, would ing up of the road or ftreck-innakingpturnsy.

in .ram-ce of the tammgfef ign-anhin,

'ceeder and advaneerg; when the lamps to be used as just' described,-the reflector-sand lamps'may be almost identical'expl'in'thf presents no one4 reiiecto'r -is lsimply position of its 'greater curved end, this all? lowingV pair vto bodying the inventionare used'for -Sllh purposes 'as street or mterior-lighti'ng,' it is thus avoiding. the confusion* ofbothgproaf are f90 the' reileetorssof both lamlisofthe bemade 'by means of the sa'im eori1r`r` or forms.. When -reecto'rs or -lamps em s 10o.'

not so important that-one side peripheral The-operation, method of-use and ja vantages of the improvements in lamps or be' of greatercurvature or I extension than the4 other side peripheral-Jig.'

-f L05.Y

'reflectors constituting the invention -4 readily understood from the'foregoingv description taken in connection 'withthe'acg 3 companying' drawing' and thej fo 0W statement( The light rays-"from th la which is placed Well forward' th eld, all portions of suc'lriield equidistant i from the reflector being equally illuminated. 'Us

Having thus disclosed our invention, what' .12 this resulting in'j'an evenfloodff We clainiand desireito; Secure by rutv f 'ent-is; Y

1. The combination of a V1*'eflectorwith source of light arranged substantially'at the f'ousthereof, said' reflector itl' .horizontal section through the reector bea vertically disposed substantially cylindriing constantly variable .so that the iield of cal surface, the curve of a horizontal section 25 the' projected light Within a radius of subthrough the reector being constantly varistantially 170 is of practically uniform in# able so that .the field of the projected light the focus thereof,. said reflector having an FRANCIS L. IsGRrGG.

aperture vvith sides curved substantially as aperture elongated laterally in opposite diare the lids of the human eye, the curve of. a rections and formed with edges arranged in tensity. Within a radius of substantially 170 is of 2. The combination of a reflector with a practically uniform intensity and the curvasour'ce of light arranged substantially at the ture of a vertical section through the re- 30 focus thereof, said reflector having an ap- Hector being *also constantly variable to erture elongated laterally in opposlte direcproduce 'a substantially uniform field of tions and the edges of which are arranged practically the same intensity for a much in a vertically disposed substantially cyrestricted vertical radius. lindrical surface, the curve of a horizontal In testimony whereof, We have signed our '351' section through the reflector being constantly names to this specication in the presence of variable so that the iield of the projected t'wo subscribing witnesses.

light Within a radius of substantially. 170 CARRIE SWPE FORD. 'is' f practically uniform intensity. SAMUEL H. BAKER.

3. The combination of a reflector with a Witnesses:

source of light arranged slllbstantially at ALFRED DACHLER,

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2475365 *Jul 7, 1944Jul 5, 1949Walsh Lester VWarning signal light
U.S. Classification362/516, 313/116
Cooperative ClassificationF21S48/1388