US1468276A - Nonglare device for headlights - Google Patents

Description

Sept. 18, 1923.

. F. C. BROCKER NONGLARE DEVICE FOR HEADLIGHTS Filed June INVENTOR WITNESS W.

Patented Sept. 18, 1223.

rnnnmcx c... nnocxnn, or OAKLAND, camronnra, assren'on or one-H LF 'ro sYLv'Aiws c. BARBIE-AM, or OAKLAND. camronma NONGLABE DEVICE r'on nmnnremrs.

Application and June' so.

I To all whomit mag concern:

' Be it known that I, FREDERICK C. BRooKEn,

a "citizen oft-he United States, and a resident of Oakland, county 'of. Alameda, and State of California, have invented a new and useful lionglare Device for Headlights, of which the following is a specificat on.

My invention relates to a device for reducing theobjectionable glare usually characteristic of headlights of comparatively high power.

An object of the inventlon 18 to provide a non-glare device in which all of the var1ous parts thereof are formed into an independent unit or structure which may be substltuted bodily for the usual lens of the headli ht.

Another object of the invention is to provide a device of the character described which is simple and inexpensive in con-struction.

The invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the fol: lowing description of the preferred form of my invention which is illustrated in the drawings accompanying and forming part of the specification. It, is to be understood that I do not limit myself to the showing made by the said drawings and description, as I may adopt variations of the preferred form within the'scope of my invention as set forth in the claim.

Referring to said drawings:

Figure 1 is a vertical section through the device of m invention.

Figure 2 1s a rear view of the device.

Figure 3 is a vertical sectional view of an ordinary headlight equipped with the nonglare device of my invention.

The device as shown in the present embodiment of the invention is particularly adapted for use in connection with the usual type of headlight, which as shown in Figure 3 comprises a housing 4 in which a parabolic reflector 6 is disposed, the source of light being in the form of an incandescentlamp 7 whose filament 8 lies at the focal point of the reflector.

Engaged within the annular groove formed between the ring 10 and housing 4, which heretofore has ordinarily been engaged by the headlight lens, is a circular disk 12 which carries the associated parts of the non-glare device substantially inde- 1921. Serial No. 481563.

disk is formed of an opaque or.-translucent material-preferably the formerend. "is provided in its upper portion with a concentric segmental opening 1? whose lower edge 14 is preferably horizontally disposed- -and forms the chord of the segment. The lower edge 14of the opening lies above the center of the disk an amount .suflicient' to render the source of light invisible from the outside of the headlight when viewed from the front at any angle on a horizontal line. In this manner the dazzling rays emitted directly from the light source will ordinarily not 'be seen. Secured to the lower portion of the inner side'of the disk 12 is a secondary reflector 16 which is arranged to underlie the source of light so that the. rays emanating from the latter are caused to be "reflected from the member 16 back against the main reflector 6 and thence through the opening 13. The inner side of the disk between the edge 14 of the opening and the reflector .16, is provided with a-high light-reflecting surface 17 so that the rays striking it may be will thus be noted that the light discharged through the disk opening 13 is the result of the combined effect of the rays reflected against the reflector 6 directly from the light source and the rays reflected against said reflector from the reflector 16 and the reflecting surface 17 In this manner a highly concentrated powerful beam of light may be projected over the area in front of the headlight without exposing the source of light thereto. By referring to Figure 2 it will be seen that the reflector 16 is sub stantially segmental in form, the curved edge being adapted to fit more or less snugly against the parabolic reflector 6 from one side of the latter to the other. In this manner practically all of the downwardly projected rays will be directly intercepted by reflector 16 and none will bepocketed in the bottom of the headlight.

The opening 13 is preferably covered by a transparent medium such as the segmental shaped glass 18 which as here shown is supported in a bracket 19 attached to the disk. When the complete device is positioned in the headlight the curved edge 21 of the glass preferably engages between the ring 10 and the headlight casing similar to the disk, and

a pier/2219i. fielt gfliomthe' like is. preferably. in-

v'trpomd between; the edge. 21; and -the1disk,

they areiunengaged lay-the glass.

The-deviceis:preferably provided ,witha visor 24 which extends outwardly from the upper edge .of the opening 13: and flCtSztO deflect the discharging rays downwardly.

- It will now be understood that a very effective non-glare device is providedzwhich may lie-readily placed on headlights-of present day construction .Without necessitating any change therein with the exception of the substitution of the lens.

-'I claim a.

A non-glare device for headlights having a substantially parabolic reflector and a soureemf light at the; focal point: thereofi, .ai member arrangedto serve :as. .the1sole{ closure for the opening of the headlight recepr tacle and comprising .aH- ircuIarHdiSk" of .opaque materia l and provided in one portion tioned to reflect the rays. fromsaid light 1 source against the primary-reflector In 1 testimonyvv whereof, I have hereunto set myhand at Oakland,--Ga1iforni a, this 25 day of June, 1921.

FREDERICKr 0-. .IBROCK-ER.

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