US1901011A - Antiglare device for automobiles - Google Patents

Description

March 14, 1933. R E F 1,901,011

ANTIGLARE DEVICE FOR AUTOMOBILES Filed Dec. 12, 1931 awe/WM Jzzlz'azz Paal Zaford,

Patented Mar; 14, 1933 m'rsn mrss T IOFF F JULIANPA'UL 'rnnron'n, OF OKLAHOMA CITY, oKLAEoMA', AssIei-ion TO: neon N."

. rimao. a. HANDLE, W. H. coonrnnannn enaw. RIDDLE;

AN IGIJARE DEVICE ron horo vronrnns Application filed D ecember 12, 1931. Serial No. 580,685;

My invention relates to anti-glare devices for use in connection'with an electric bulb for an automobile headlight, or the like.

I am aware of the fact that it: has heretofore been proposed to mount a reflecting shield upon or in advance of the electric bulb of an automobile headlight. The difficulty experienced in connection with such devices is that the average user will not accurately or properly apply the reflecting shield upon the bulb so that it will be positioned at the requiredangle, with the result that the reflectin shield ma lose a art or all of its efficiency in reducing blinding lights.

In accordance with my invention, I provide a reflecting shield which is mounted upon the forward end or end portion of the bulb, and this shield is carried by an attaching device which, in turn, is secured to a por tion of the bulb, preferably the shank ofthe same. The attaching device, when applied to the shank, is held thereto at a fixed angular position and will, in turn, hold the re flecting shield upon the end or end portion of the bulb in a proper fixed angular position, for rendering efiicient service. The invention is of simple construction, may be manufactured cheaply, and may be placed in position so that the reflecting shield will assume the correct angular position, by an inexperienced user.

In the accompanying drawing, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a vertical section through the reflecting shield and attaching device, parts in elevation, showing the same in use,

Figure 2 is a side elevation of the shield and attaching device, removed from the bulb,

Figure 3 is a perspective View of the attaching device with the reflecting shield re moved, and

Figure l is an end elevation of the same.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a bulb of an electric light, having the usual shank 6, and filament 7 This the like.

shank 6 is held in the usualsocket andprojects forwardly beyond this socket, as is customary. "The bulb 5 is arranged within a parabolic reflector 8, having a lens9, as-

sociated therewith, as iscustomary.

-The numeral 10 designates. a reflecting shield. This shield is preferably substantially opaque, and is preferably formed of glass. The outer surface of this 'shieldis shield constitutes-a highlypolished reflecting surface, and this reflecting surface is provided by burning or firing a platinum al- 10y into the concaved surfaceof the glass shield. While thisis preferred, the invention 'is not necessarily restrictedto this procise type of refiectmg surface, as the convex side ofthe shield may be suitably treated to provide a reflecting surface," as is the case of a mirror.

preferably covered by a coating 11, which is" "It is thus seen that the concave side of the shield surface has an'eflicient reflecting surface. The reflecting shield 10-isspherically curved and isadapted to be mounted upon the forward end or end portion of the bulb 5, with its edge 12 or plane arranged at an l inclination. Ihave found that highly'satisfactory results are obtainable by having the edge 12 inclined at anangle of about 30 from the vertical, although this precise angle may be varied within limits. This angular disposition of the shield allows the filament to be uncovered throughout substantially the upper half ofthe bulb, while the shield covers the filament throughout substantially the lower half of the bulb. I The edge 12 having all portions thereof in a common transverse lnohned plane, permlts of the uncovering of the filament toward the upper side of the bulb in gradual and uniform manner, effecting a superior distribution, or

The attaching device which I provide not shield upon the forward end or endpor'tion of the bulb',:but insures'that theshie'ld W111 assume the correct angular position, requiring no adjustment after the attaching device has been mounted upon a part of the bulb, such as a shank. 1

This attaching device is preferably formed of spring steel, and includes a lower main strip or body portion 13, including a forward curved arm portion 14:, and this forward V curved arm portion carries a pair of diverging curved arms 15.: The arms '15 are bent inwardly or over at their freeends, afi"ording catches or fingers 16. The curved arm portion 14 constitutes a third arm, which 1s circumferentially equi-distantly spaced with respect to the arms 15, these three arms snugly receivingand holding the spherically curved reflecting shield 10, the fingers 16 engaging over the edge 12, while fingers 17, formed at the rear end of the arm portion 14:, also engage over the edge 12. The remounted upon the forward end portion of an electric bulb and a separate holding device therefor, said holding device comprising a longitudinal body portion including an arm portion provided at its forward free end with a pair of diverging arms, the arm portion and the arms being longitudinally curved to correspond to the curvature of the shield and having their rear end portions substantially circumferentially equi-distantlyspaced, said arms being provided at their free ends with inwardly facing extensions to engage over the edge of the shield and the arm portion being provided adjacent to its rear end with an inwardly projecting extension to engage over the edge of the shield, said arm portion being longer than said arms so that the shield is held at a selected an le, said body portion extending rearwardly eyond the arm portion for a substantial disflecting shield 10 is, therefore, securely held 1 nd a U-shaped socket carried by the in place upon the holding device and assumes the proper angle'with relation thereto. The rear end of the strip or body portion 13, extends rearwardly beyond the arm portion 14 and is provided with an attaching socket 18, which is U-shaped, and is adapted to be sprung upon a portion of the bulb, preferably upon the shank 6. The arm portion 14 is longer than the arms 15, and this enables V the arms and arm portion to hold the refiector at the selected angular position, when applied to the bulb.

In view of the foregoing description, it.

will be seen that the reflector may be quickly and conveniently applied to the bulb in the car, without the necessity of removing the bulb from its socket. The socket 18 is mounted upwardly upon the shank 13, and when thus applied, it will automatically cause the reflecting shield to assume the proper angular position upon the bulb.

When applied to the forward end or end portion of the bulb, the rays of light from the filament are reflected upwardly and rearwardly upon the upper portion of the parabolic reflector, and are then projected forwardly by the reflector and inclined downwardly, to strike the road at a suitable distance in advance of the automobile. The devicewill'eliminate the shadows and blinding lights, and will alsoperceptibly increase the amount of proper illumination upon the road.

It is to be understood that the form of my invention herewith shown and described, is to be taken as the preferred example'of the same, and that various changesin the size, shape and arrangement of :parts may be resorted to without; departing from the spirit of my invention or the scope of the subjoined claim. 1 1 V Having fully described my invention, what I claim is: r

rear end of the body portion for engaging with the shank of the bulb.

In testimony whereof, I affix my signature.

JULIAN PAUL TEDFORD.

A spherically curved reflecting shield to be

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