US1511412A - Glareshield - Google Patents

Description

W. D. LYON GLARESHIELD' Filed July 15, 1922 Patented Get. 14, 1924.

UNITED STATES WILLIAM D. LYON, OF AKRON, OHIO.

GLARESHIELD;

Application filed July 15, 1922. Serial No. 575,M9.

To all wiwm it may concern:

Be it known that I, WILLIAM D. LYON, a citizen of the United States, residin at Akron, in the county of Summit and tate of Ohio, have invented new and useful Improvements in Glareshields, of which the following is a specification.

This invention relates to light projection lamps and has particular relation to a new and improved shield adapted to be secured to the light bulb of such lamps to control and direct the light rays issuing therefrom.

Objects of the invention are to provide a shield of simple, durable construction which may be quickly and conveniently attached to the light bulb of a projection lamp and which in use will provide efiicient means whereb a highway may be brilliantly illuminate without roducing a glare .which will blind pedestrlans or other users of the highway.

In View of the discomfort and dan er incident to the use of ordinary headlig ts the most of the States have passed laws against the use of plain lensand lamps for automobile lights and require the provision of some means of avoiding objectionable glare.

Numerous attempts have been made to comply with such laws and rovide sufficient illumination for night driving. Many devices have been suggested, but thus far the results have not been wholly satisfactory.

A particular object of this invention is to provide a shield which may be detachably secured to a light bulb of a projection lamp and which when used in connection therewith will permit only indirect rays to issue therefrom.

Another object of this invention is to provide a lam attachment of the type above indicated w ich may be easily mounted directly upon the lamp bulb and which will be entirely supported thereby.

Although the device of this invention is highly efiicient in ope-ration, it is relatively inexpensive to construct and may be used for an indefinite length of time. With these and other objects in view, the invention will be more fully described, illustrated in the drawings in which like numerals indicate corresponding parts and then more fully pointed out in the appended claims.

In the drawings:

Figure '1 is a side elevation, partially in Figure 4 is an end elevation of a lamp having the shield, shown in the previous figures, mounted thereon.

Figure 5 is a side elevational view showing a modification of the invention, and Figure 6 is a central vertical, longitudinal sectional view of same.

In practicing the invention, a lamp shield is constructed by formin a substantially cylindrical body of a suitab e sheet metal, the body being provided with a curved end portion and an opening at one side thereof. In order to provide means for mounting the shield upon a lamp, a plurality of gripping fingers are stamped out of the cylindrical member so as to pro'ect inwardly therefrom to engage a lamp bu b. In order to increase the efliciency of the device, the interior thereof may be either highly polished or provided with a silver material, such as utilized in reflectors.

In order to insure a clear and accurate understanding of my invention, reference may be had to the drawings in which a shield 1 is shown that is constructed in accordance with m invention. As above mentioned, the shie d is preferably formed of a suitable sheet metal to provide a substantially cylindrical body having a curved closed end portion 2' provided with a centrally located opening 3. The member 1 is further provided with an enlarged opening 4 at one side thereof to permit of directing light rays from a lamp to a reflector.

The member 1 is designed to be mounted directly upon a lamp. n order to rovide means for securing it to a lamp, a plilrality of gripping fingers 5 are formed by stamping portions of the member 1 to extend towards the interior of the body. By reason of the fact that the body is formed of sheet metal and a curvature iven to the fingers, they possess a certain degree of inherent resiliency, which facilitates mounting the members upon a lamp.

As will be seen upon exammation of Figure 1 of the drawing, in order to apply the shield of my invention, it is only necessary to force the fingers over a lam bulb 6 to clampingly engage it and hold t e shield in position. The openin at the side of the member- 1 is arran at the top of the lamp so that any light rays emanating therefrom are directed towards the upper portion of a surrounding reflector 7. It may be desirable to increase the etficiency of the shield by giving the interior of it a highly polished surface or by ap lying a material to attain the same effect. t will also be observed that the central opening 3 in the curved end of the shield, is adapted to receive thenip le of the lamp and obviates the danger o the lamp being destroyed bybeing broken at this portion.

In view of the fact that the shield entirely surrounds a lamp, upon which is mounted, with the exception of the opening provided at its side, it is possible to direct all of the rays to any desiredportion of a surrounding reflector. As a result, no direct rays are ermittedto escape from the lamp and the li ht that is utilized is directed down u on the ighwa at a convenient distance mm the vehic e upon which it is utilized. Furthermore, the particular means of mounting the shield upon a lamp affords a convenient range of sizes of lamps upon which the shield may be efliciently mounted.

In Figure 4 and Figure 5 there is illustrated an adaptationof the invention in which the reference character 5 is used to denote a cylindrical bod similar td the body 1 hereinbefore describe and the characters 5 denote struck out portions sim lar to tongues 5. In this modification of the invention the cylindrical body, 1 is p1 "/ided with a conical-end wall 2, the numeral 3 being used to designate an opening similar to the openin 3 hereinafter described.

Althou h lamp shie d constructed in accordance with my invention, it is obvious that minor changes may be made in the construction and application thereof without departing from the spirit and scope of my invention, and I desire, therefore, that no limitations shall be imposed except such as 'are indicated in the appended claims.

Havin thus illustrated my invention and describe the same in detail, what I claim as new and desire to secure by Letters Patent is 1. A glare shield for head li hts, com rising a cylindrical cup adapted to be tted over an electric light bulb, the cup having a hemi-spherical end wall provided with a centrally positioned opening for the reception of the tip of the bulb, fingers struck have shown and described 21.

from the wall of said cup, said fingers extending rearwardl wardly to engage t e bulb to retain the cup thereon, the wall of said cup provided on the upper side thereof with an opening.

which extends therein from the inner end thereof to a point in spaced relation to the forward wall thereof.

2. A glare shield for head lights comprising a cup-like shield of opaque material adapted to be fitted over a light bulb, the

and being curved in-' forward wall of said shield being provided 'with a centrally positioned opening adapted to receive thetop of the bulb, said shield having an opening in the upper side of its wall, a plurality of fingers struck from said wall, sa1d fingers extending rearwardly and being curved inwardly to engage the bulband retain the shield thereon.

3. In a glare shield for incandescent light bulbs, a cup-like opaque body portion adapted to fit over the bulb, the forward wall of said body provided with a centrally positioned. opening adapted to receive the tip of the bulb, the side wall of the body being cylindrical a plurality of spring fingers struck from said cylindrical wall, said fingers being attached to the wall at points adv acent the forward end thereof and extendtioned over said bulb, said shield comprisingacylindrical cup, the cup having an outwardly bulged, forward end wall provided with a centrally positioned opening for the reception of t fingers struck from t wall of said cup, said fingers extending rearwardly and being curved inwardly to engage the bulb and retain the shield thereon, the interior face of said cup being polished to provide a reflecting surface, an opening extending in the upper side of the wall of the cup from the rear ed e thereof.

11 testimony whereof I have hereunto set my hand.

WILLIAM D. LYON.

e tip of the bulb, spring

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