US2994006A - Anti-glare head lights of two sections forming one unit - Google Patents

Description

L. ASTIVIA July 25, 1961 ANTI-CLARE HEAD LIGHTS OF TWO SECTIONS FORMING ONE UNIT Filed Sept. 4, 1958 0* Ma: ATTORNEYS United States. Patent Oflice Patented July 25, 1961 2,994,006 ANTI-GLARE' HEAD LIGHTS OF TWO 7 SECTIONS FORMING ONE Lorenzo Astivia, 'Calle Ensenada 107 Colonia Condesa, Mexico ity,.Mexico Filed Sept. 4, 1958, Ser. No. 758,984 2Claims. (Cl.'313--1) .In general the anti-glare headlights known as an addition or as a single unit offer several inconveniences principally due to their not fulfilling their object, and in the anti-glare headlights known as enclosed unit in order to obtain such opposed anti-glare effect it only reduces the intensity of the light, which is known as half-light and these invariably cause dazzling effects not only to the pedestrian but also to the on-coming car driver which causes innumerable accidents on the highways.

Another disadvantage that is observed in these closed unit headlights is that the light beam is always the same, either in the half-light or in the full light, which means that the so-called half-light is only a lower amount of the voltage applied, but not enough to avoid the dazzling effect since such light bulbs contain the filaments for different voltages.

Still another disadvantage is that if due to any circumstances of one said filaments burn out, said headlight is extinguished causing the car to use only one headlight, which means danger on the highways, due to the fact that the driver of an on-coming car cannot establish the distance that separates both cars from each other.

Another disadvantage is also observed and that is when two cars cross each other due to traific regulations, they have to use the low light in these closed units and what really happens is that said drivers can only reduce the intensity of the voltage applied to the filaments, but no means is available to prevent the dazzling effect and there is also present in that after driving the car for a certain period of time on the highways with full headlights on and when crossing they have to change to the so-called halflights, the visual retina accommodates itself to such rapid changes, only after the drivers have scarcely suflicient light to drive safely while the light beam is projected by such half-light there will be rather poor visibility and only close in front of the car, which in other words means that there is a momentary blinding effect to both drivers.

It is an object of this invention to provide an anti-glare headlight consisting of two separate sections forming one unit.

Referring to the drawing, FIG. 1 is a cross-section of the headlight,

FIG. 2 is an end view of a securing band, and

FIG. 3 is a front elevation of the headlight.

In the annexed drawing in FIG. 1, 1 and 1A show the front section of each of the two closed sections which compose this anti-glare headlight and the sections assume the convex form of a half circle, transparent in their front section. The back sections 2 and 2A are similar but independent sections which assume a concave shape of a half circle, and 9 and 9A are the flat bases of the sections. 3 and 3A shows an integral ring depression in each half circle, and these ring depressions are fitted with a circular ring or band to hold the two sections together with an intermediate packing between the two bases of the sections to form a circle in front. 4 and 4A are integral depressions molded on the outside end of the concave shaped back, and these depressions receive a means to hold the back of the two sections firmly together. The placing of these two sections is made easy for their insertion in the molded space for the purpose. 5 and 5A are the filaments of the electric bulbs in each of the closed sections, and *6 shows suitable packing in order to avoid any friction between the bases of these sections which also prevents any breakage and further prevents any possible passage of light from one section into another. A flat metallic band 7 extends horizontally as to the diameter of the circle formed by the two sections or units and at each end contains a lip which is inserted in front of the convex shape and is retained by the usual headlight ring of the car. 8 and 8A are the two connecting plugs for connecting the electric energy to the filaments.

FIG. 2 shows a metallic band '10 for theband 7- of FIG. 1 and the width of this metallic band is equal to the width of the front and inside integral angular corners of each section or unit. The object of these integral angular corners will be described,..and said metallic band roassumes' the same convex form as the front end'of the sections. 11 and 11A are the end lips which are placed between the front end of the units and the common headlight ring of the car proper.

FIG. 3 shows a front view of the two sections or units in which 1 and 1A shows the circle formed by these two sections or units in their operating position and in the center of this circle so formed there is shown the front metallic band 7 which is fixed between the front end of the units and the headlight ring proper.

Referring to FIG. 1, each closed section or unit is identical and independent so that each of these sections or units greatly simplifies manufacture and their initial cost is greatly reduced, since both sections or units can be used either in the upper section as well as in the lower section and therefore they are interchangeable.

Each one of these sections or units of which the headlight is formed according to this invention contains an electric bulb of the same intensity, and each lamp can be lighted independently or simultaneously, that is by lighting the lower lamp in the lower unit, the light beam is directed downwards and when required, the upper lamp in the upper section or unit can be lighted to obtain a light beam to be reflected a great straight forward direction or when required the two sections can be lighted simultaneously whereby also a downward light beam is directed in front of the car towards the pavement or the highway, and by this arrangement a projection of two powerful light beams is obtained which is very useful in bad sections of a road and these light beams will also produce a lateral lighting of the road.

The back concave shaped form of these sections or units has the entire inside surface highly silver-plated to reflect the light forward in the shape of a light beam which is reflected downwards by the flat also highly silver-plated base of the section or unit and the light beam produced by the lower section or unit is positively anti-dazzling as the light beam produced by this lower section is horizontally in a straight line by the flat base of the section or unit which is placed upwardly. The upper section or unit has its base downwardly whereby these two flat base sections abut each other, and this top fringe of the light beam produced by the lower unit or section will never be higher than one-half the height of a normal person standing at any distance in front of the car. Therefore the light beam produced by this lower section or unit is positively antiglare or dazzling and this effect is reinforced due to the electric lamp in each section or unit which is concealed from the view of a person in front of a car or from the view of a driver of an on-coming car by the integral angular corners on the inside surface of the convex transparent front section and on the inside surface of concave shaped back of the unit at the other end of its flat base. Also by the flat metallic bank 7 which covers the entire angular space so formed in both sections or units when joined together there is thereby also a limit to the upper fringe of the light beam produced by the lower unit to the eifective height of the lower edge of said metallic band and the distance to the pavement.

an electric bulb, each section having on its front side a 5 base.

convex transparent contour in a semi-circle, and the back having a concave contour and a flat base, the concave shape and flat base being silver-plated on their inside sur- 'face and having an integral depression formed around the half-circle between the convex and the concave contours and another integral depression formed between the concave contour and the flat base, and a flat metallic ribbon with a projection on the convex side thereof.

2. An anti-glare headlight comprising an electric bulb having on its front side a convex transparent contour in a semi-circle, and the back having a concave contour and a flat base, the concave shape and the flat base being silverplated on their inside surface and having an integral depression formed around the half-circle between the convex and the concave contours and another integral depression formed between the concave contour and the flat References Cited in the file of this patent UNITED'STATES PATENTS 1,237,611 Barnes Dec. 17,19i s 1,480,428 Wales Jan. 8, 1924 1,621,085 Ritz -4 Mar. 15, 1927 2,324,972 Wright July 20, 1943 2,843,779 Darsie' July 15, 1958 FOREIGN PATENTS 174,393 Germany Aug. 31, 1906

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