US1613370A - Glareless headlight - Google Patents

Description

Patented Jan. 4, 1927.

/ UNITED STATES PATENT OFF-ICEQ JOHN G. AMES, OF LOS ANGELES, CALIFORNIA.

GLARELESS HEADLIGHT.

Application filed December 23, 1925, Serial No. 77,282.

. casing having reflecting inside walls and 1 with a lamp mounted in a reflector positioned at the rear portion of the casing and inclined downwardly to project through the lower part of a lens at the front of the casing. The upper portion of-the lens is preferably frosted, preventing any direct rays from being transmitted therethrough.

A particular feature of my invention is utilizing the cross reflecting rays of light from the reflector striking the side walls of the casing, such side walls reflecting these rays again in such manner as to illuminate the road close to the headlight and on both sides. The rays reflected against the upper frosted portion being prevented from being objectionable as above mentioned.

I may construct my headlight in different shapes, but in the illustrations show a rectangular construction or casing with a rectangular lens in the front and a projecting lamp comprising a lamp bulb with a curved reflector preferably of the parabolic type. The reflector is mounted inside the casing at the rear end and adjacent the top and inclined downwardly so that most of the rays of light from the lamp are projected through the lower half of the lens which is transparent.

My invention will be more readily understood from the following description and drawings, in which- Figure 1 is a side elevation of my headlight; omitting the details for fastening to the vehicle.

niuneral 1 is illustrated as rectangular, hav-- light ing top and bottom walls 2 and 3 and -side walls 4 and 5. These walls are preferably formed with reflecting surfaces on the inside. The rear 6 of the casing may be denied or arched or other suitable construe tion merged into the top and bottom and the side walls. A lens 7, shown as rectangular is secured to the front of the casing by means of an internal flange 8 "on the forward end of the casing and a capping ring 9-having a flange 1O engaging the edge 11 of the lens and a flange 12 is secured to the walls of the casing. If desired the side light 13 may be built into one or both sides of the casing and is shown secured therein by heading 14. The'e side lights would preferably be colored glass indicating conventionally a right and a left side.

The upper half 15'of the lens is preferably frosted or otherwise treated so as to be translucent andv toprevent the passing of the direct rays of light without diffusion. The lower half 16 of the lens is preferably transparent.

A light reflector 17, shown as a curved reflector which maybe parabolic if desired, or any suitable shape adapted to reflect light,

is mounted in the back of the casing. The

mounting shown comprises an upper bracket 18 on which the reflector 17 may slide. A stud 19 extends laterally from the flange 20 of the reflector and a focusing screw 21 is screw threaded in the stud-and is supported in the end of the casing having an adjusting nut head 22 on the outside of the casing. This focusing screw is prevented from longitudinal movement through the casing by any suitable construction; this bemg shown as a washer 23 and a nut 24 .i

on the screw on the inside of the casing.

A lamp 25 is mounted in an ordinary type of lamp socket 26, fitting in the tu bular bracket 18. The lead wires 27 pass from the socket through a thimble 28 in the rear wall of the casing.

From the above constructhm it will be noted that the reflector is mounted so that its axis is permanently inclined downward- 1y from the upper portion of the back of the casing and by means of an adjusting screw the reflector 17 may be adjusted in and out in reference to the lamp in,..order to focus the lamp properly in such reflector. Therefore it is possible with a properly designed reflector to project light, most of which will have substantially parallel rays ill) and these will be directed forward and ilahrough the lower transparent part of the ens.

Some of the rays of light which strike 'the upper part of the reflector will'be re- 'light reflected from the lower surface of the reflector 17 upwardly and'downwardly from theupper surface of the casing, are projected outwardly through the lower transparent half of the lens, thereby illuminating the road immediately in front of the headlight.

The rays of light projected from the side of the reflector, will be reflected from the sides ofthe casing, some of these passing through the lower transparent half of the lens, illuminating the side of the road, and

' others in the upper part of the casing striking the frosted part of the lens and being diffused.

The above description outlines the general path of the most of the rays of light; it will of course be understood, that there will be a certain amount of cross reflection in the casing, some of such cross reflecting light passing through the lower part of the lens and illuminating the road on the sides and immediately in front of the headlight, other rays being diffused through the frosted part.

I have not illustrated any particular manner of mounting the headlight as this does not form any particular part of my invention. Moreover, it is to be understood that ,the casing need not be rectangular nor square as shown but may be made circular or any other suitable shape in cross section. However, it is my intention that the walls be parallel to the central axis of the cas-v ing so that the light reflected cross' ways from the reflector will be reflected from the sides of the-casing, either through the clear lower section of the lens or diffused through the upper section;

It will also be manifest that my glareless headlight may be considerably changed in general construction and in specific details to suit different arrangements of supporting the reflector and different shapes of casings; such changes being within the scope of my invention as set forth in the description, drawings and 'claim.

Having described my invention, what I claim is:

A headlight comprising in combination a rectangular casing having vertical side walls and horizontal top and bottom walls, a rectangular lens in the front of the easing, a closed rear wall for the casing, a tubular bracket secured to the rear wall having its axis inclined downwardly, said bracket being positioned in the upper portion of said wall, a reflector having a flange siidably mounted on the outside of the said bracket, and a lamp mounted in said bracket, a stud extending laterally from the flange, a focusing screw threaded therein, and a rotatable mounting for the screw in the back wall of the casing.

In testimony whereof I have signed my name to this specification.

JOHN G. rms.

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