US1273778A - Headlight-dimmer. - Google Patents

Description

O. W. HANSON.

HEADLIGHT DIMMER.

APPLICATION FILED FEB.8.19I8.

1 ,273,77 8. Patented July .23, 1918.

9. M yam 00w Q ib 1 unrrnn STATES PATENT OFFICE.

HEADLIGrlT-DIMMER.

Specification of Letters Patent.

Patented July 23, 1918;

Application filed February 8,1918. Serial No. 215,955.

To all whom it may concern:

Be it known that I, ()scnu \V. Hanson, a citizen of the United States, residing at Salina, in the county of Saline and State of Kansas, have invented certain new and useful Improvements in Headlight-Dimn'iers; and I do declare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its principal object to provide an extremely simple and inexpensive, yet an etlicient head light dimmer, so constructed as to prevent breakage of the electric bulb of the head light even though said globe may be extremely close to the lens in rear of which the device is used. 1

A further object is to' so construct the dimmer as to confine the rays of light to the roadway, to furnish suilicient light a distance from the car, and yet prevent such light from being projected sutliciently high to interfere with the vision of approaching pedestrians or others.

A still further object is to provide a dimmer which will soften the light rays so that drivers and others approaching the head lights equipped with the invention will find the rays less blinding as they approach, and thus any small interfering effect which these rays may have upon the vision will be decreased as the machine is approached or approaches, as the case may be.

With the foregoing general objects in view, the invention resides in the novel construction and arrangements of parts therein described and claimed and shown in the accompanying drawing in which:

Figure l is a vertical section of a head light equippcd with the 'dinnncr; and,

Fig. 2 is a front view of the dinuncr.

In the drawing, the numeral 1 designatesthe substantially parabolic reflector of a head light, said reflector being located in a casing 3 provided with a lens 3 and a retaining ring l for holding said lens in place. the usual electric bulb The improved dinnner is formed of a At the center of the eflector 1 is vanes 10 extending rearvardly from the lower edges of said slots, said vanes being formed by the metal struck from the slots and therefore decreasing gradually in width toward the lower edge of the device. The angle between the vanes 10 and the disk also varies from acute at the upper edge of the device to substantially right angular at the lower edge thereof. Due to the central ring 7, no vanes exist at the center of the dimmer and consequently there is no danger of breaking the bulb 5 by contact therewith.

The dimmer is clamped between the inner side of the lens and its seat with the vanes 10 extending rearwardly and most of them inclining upwardly, and when so applied, the device will serve to direct the upper reflected rays of light downwardly onto the roadway and will prevent projection thereof at a height to interfere with the vision of pedestrians and drivers of other vehicles. The open space at the con tor of the dimmer is not of disadvantagealthough exposing the bulb 5, since it is the strong reflected rays and not the direct rays that produce undesirable results on the vision.

The invention, although simple and inex- 'iensive, possesses great advantages, these advantages being first, that the dimmer is so constructed as not only to confine the rays of light to the roadway or prevent thcm from being projected suiiicicntly high as to interfere with the vision of approaching pedestrians or drivers but also, and as a more important consideration, to furnish sullicient light farther ahead in the road. Second, pedestrians or others approaching the car equipped with these dinnners will find the rays of light growingless blinding and offensive as they approach the: dimmer. In other words, although the dimmers accomplish the desired purpose in preventing interference with the vision of those approaching them, such interference as does exist decreases as they approach the dim mcr.

I claim 1. A head light dimmer comprising a small central ring, a peripheral ring, short vertically spaced horizontal vanes extending between the two rings, and longer vertically spaced horizontal vanes spannin said peripheral ring above andbehiw sai central ring, all of said vanes extending rear- Wardly.

2. A structure as specified in claim '1,

'mid vanes decreasing in Width from the upper to the lower edge of the device.

3. A structure specified in claim 1,

5 said vanes varying their angular relation to the plane of said ring from acute at the up er edge. off the device to substantially rigefi angular at the lower edge thereof.

4:- A structure as specified in claim 1,

10 said vanes decreasing in Width and increasing their angle to the plane of the rings from the upper to the lower portion of the device.

In testimony whereof I have hereunto set my hand in the presence of two subscribing 15 witnesses.

OSCAR WILLIAM HANSON.

Witnesses:

' F. D. BLUNDON,

B. O. VVILDER.

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