US1643086A - Vehicle headlight - Google Patents

Description

Se t. 20 1 2 p 9 7' w. J. PIKE ET AL VEHICLE HEADLIGHT Filed Oct. 6, 1925 INVENToRs JZer p/ a/M/ ATTORNEYS Patented Sept. 20,y 1927.

1 UNITEDASIATES `i rrlslary ori-Ica WALTER. .1. ruin .um WILLIAMl J. GIBSON, or NEwaYeo, inrIcIIeaJsr, assumons 'ro man V1mm mom'ronms LIMITED, or NEWAYGQMICHIGAN, A. LIMITED co- A Pm'rNnnsHIr'or IICIIIGAN.

vmnctn IIEADLIGHT.

Application med'. amber s, i923. Asin-iai ramasse'.

The present inventionv relates'y to,i head lights vfor automobiles and the like, and more particularly vto a lamp construction adapted not only to prevent glare but also arranged l l n ing a light emitting o umg only at the,

manner as to properly and effectively illuminate the road. This. present construction combines the use of vthe original arabolic reflector with a covering lens or p ate havends, said invention, then, cnsistsg'of the -mea-ns hereinafter full describedvand particularly pointed out 1n the claims.. L

The annexed drawing `andthe following' description'set forth in detail.certa1n.m ec h' anism embodying the invention, such dis# vclosed means constituting; however, but one of various mechanical forms in whichthev principle 'of the 'invention maybe used,

- `modified form ofc'onstruction,y and Fig. 3w

Y usual lens moun f In saidiannexed drawing?? Fig. 1: is a verticalsectional view through a lamp embodying the present invention; Fig. 2 is asimilar sectional view showmg 'a' is a section taken on the line of Fig. 2. The present headlight comprises the usual outer casing 1.- carryingfthelamp, socket 2,

lamp bulb 3 and electrical connections therefor.v WithinJ this casing Yis-lnounted the* usual parabolic reflector 4. In place 'of the ted at the frontof they rel Hector, is a second parabolic refleetorl'5, yhicle oragainst the polished Inner surfacevv turned in the reversedirection to reflector 4,

havigg aA central aperture 6, this reflector" being of a longer focal length-than the main reflector. Mounted in the fo 'ning at 'the center ofthe reverselypositioned. reflector 5 is a headlight lens-7 'of thevtype com# monl used to bend the Vlight rays'downwar y, and over and around this lens is mounted a forvvardl'4 and downwardl extending hood 8 whic `is preferably po hed on its lower or inner surface!) 4so aste reilect light rays which strike the same downrdl onto the road. As shown in Fig. 1,

a was er.10 is mounted between lthe Banged ends of the two reflectors and theseare held so as to throw'all of the light beams on the `roadwayl in 'front of the vehicle in such a.

tioned parabolic Y reflector rIng ismount'ed the same type of non-glaring ond reflector or plate maln :forwardly extending beam of light in the lusual manner. The headlight will be f vtilted slightly,

1n plac bymeans of a locking ring 11 or the hke, which is mounted upon the edge ofthe outer casing.-

In Fig: 2 there is shown asimilar lamp construction embodying an outer casing -orV housing 12 carrying thelamp socket 13, lamp 14 and electrical'connectlons and thef usual parabolic reflector I15 mounted in the casing. Over the front of this casing, in place o f the usual lens, is

having an opening 17 in the center similar' tothe openingin the reversely' posisuch as `shown in F1g. l. The forwardly and downwardly extendlnghood' 8 is attached to this plate'sur# roundmg the openingan within ther openlens 7 The inner surface preferably be a reflecting 1t may be unpolished for conditions. ji.

In usin 'aheadlight of'this type it has been foun normally go of this plate will surface, although use under certain out through the center of the lens are transmitted ydirectly through the i small lens placed at the center'of the secand are used for the as is the usual practice, and as 1t 1s the central portion of the rays which gives the greatest Illumination, this portion is maintained by the present light. The

rays comin fromA the main reflector strike r l the reverse ypositioned reflector, are rejected back against the main reflector and then out through vthe lens'- either downward-v ly against the" groundin front of the veofthe hoodfrom which they will be re-U ilected downwardly ontot-he road. .The use of-a at plate, such as is shown in Fig. 2 serves v'substantially the same pu e ,in re-l fleeting the ray withinv the heaigsht back the. main through the small centrally placed lens. g The'hood, as shown in both figures, extends Idownwardly, that is, atfan angle tothe axis of the lampA and thus prevents nys of Alight coming through the lens andftraveling in upward direction, thus eliminatingthe glare from the direct rays from the bulb and also preventing rays of light from being 'reflected mounted a 'plate that thought rays which would f reflector and inallyout l directly-from the bulb los fromthe main relector in an upward direction. rl`he use oi the usual type of non glaring lens which tends to bend the light rays slightly downward also aids in overcoming the upward rays of light which give the glaring ed'ect.

By the use of this downwardly directed hood and the small lens, both the lens and Ill ' drivers of Vehicles which may approach one the light-giving bulb, as well as the reector proper are entirely concealed from the yiew of the driver of an s approaching vehicle, while at the Sametime giving the user the benefit of the entire light on the road. The use of this hood also takes care of the improper focusing of the lamp, and while such improper focusing of the lamp bulb will reduce the light given out by the headlight and will cut down the road illumination, it causes trouble only to the user of the vehicle on which the present lights are installed and does not cause any glare to on which headlights are used. As is well known, the oidinary non-glaring headlight is not particularly etlective and always glarcs to soine extent. lVith the present headlight and hood arrangement the rays of light are directed onto the road so as to properly illuminate the saine, but at .the saine time the light giving elements coinprising the bulb, reflector and lens are substantially concealed from the drivers of approaching vehicleso that there is no danger of any glare to them. i

Other modes of applying the principle of our-invention may be employed instead of the one explained, change being inade as regards the mechanism herein disclosed, provided the means stated by any of the following claiins or the equivalent of such stated means be employed.

telenet We therefore particularly point out and distinctly claim as our invention:-

l. In a headlight Jfor motor vehicles, the combination with a casing, lamp socket and lighting element of a parabolic reflector p0- sitioned ink said casing, a second parabolic reflector mounted at the front of said casing, and positioned reversely with respect to said first reflector, said second reflector being of greater focal length than said first reflector and being provided with a central opening, a light directing lens mounted in such opening` and a forwardly extending elongated inclined hood surrounding said lens and rigidly secured to said second retlector, said hood being polished to provide a reflecting inner surface and being so placed as to cut oil all upwardly directed light rays from said lens and to reflect the same onto 'the ground in front of the vehicle.

2. In a headlight for motor vehicles, the combination with a casing, lamp socket and lighting element, of a parabolic reector positioned in said casing, a reflecting plate mounted across the open end of said rellector and providedwith a central opening, a. light directing lens mounted in such opening in said plate and an elongated hood rigidly attached to said plate about said lens, said hood being open at the bottom and having its upper surface inclined down- Wardly toward the axis of the reflector but terminating slightly above such axis, the

sides oit' said hood inclining upwardly from.

points near the bott-om of such opening to less than a half circle at the front end of said hood.

Signed byus, this 22nd day of September,`

nl/VALTER J. PIKE.

WILLIAM J. GIBSON.

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