US1902860A - Headlight - Google Patents

Description

HEADLIGHT iled March 7, 1932 Patented Mar. 28, 1933 UNITED STATES PATENT OF CE WILLIAM H. KAY AND ESKEL MCDANIEL, or sit. Louis, n'IssoURI HEADLIGHT Application filed March 7, 1932; 'SeriaIN'o. 597,298.

changing foreground ahead of the headlight while projecting direct rays from a main reflector in parallel lines to the limit of their projection; fifth, for variably reflecting di rect rays upward to the upper reflector from which they are reflected as secondary rays, and varying the point in the foreground where they focus; and sixth, .for normally hiding the lamp from direct front view of an approaching motorist.

In the accompanying drawing in which like reference numerals indicate corresponding parts,

Fig. 1 represents a front view of a headlight exemplifying our invention;

Fig. 2, a plan view of the same;

Fig. 3, an enlarged central vertical section on the line 3-8 of Fig. 2; and

Fig. 4, a separaterplan view of our grid reflector in its preferred form as made in r sheet metal.

Referring to the drawing, the numeral 8 designates a flat light transmitting plate in the front end of a casing having a curved top 4 and vertical sides 5 below a horizontal axis X which are connected by a flat, substantially trapezoidal bottom 6, adapted to enclose the upper half of a parabolic or other 7 suitable reflector 7, mounted on a substantially horizontal axis X. An electric or other suitable lamp 8, is operatively mounted in the focal point of said reflector, so that direct rays from the lamp are reflected forward in preferred substantially horizontal parallel lines A as indicated in Fig. 3, for

distance projection.

A horizontally disposed auxiliary reflector V of substantially trapezoidal shape corresponding to said bottom is mountedwithin thecasing, andiconsists of transverse slats 9 forming multifaced reflecting surfaces sep- 'ara'ted by open spaces 10 and=fastened at] fixed inclinations betweenverticalside bars 1 i 11 convergingtowards the rear, where they are preferably hingedon" a: horizontal rod 12 to allow of adjusting said auxiliary reflector, asindicated, such as by means of a threaded vertical link 13, pivoted toasaid auxiliary reflector and passing down through said bottom. The lowerend of said link has-a knurled nut 14 and jamnut 15 disposed respectively above and below a bracket 16 on said bottom. I,

.Said slats have a reflecting upper surface and are arranged insteps that rise successively higher toward the front, so that direct Y forward rays from the lamp will pass to all of said slats, as indicated. The side bars are correspondingly curved upward toward the front, and the slats are inclined rearwardly downward, preferably at lessening inclination to the horizontal axial plane, so as to reflect .said rays upward tomeet the upper reflector, from which they are secondarily reflected forward.

The preferred adjusted position of the auxiliary reflector, as shown in Fig. 3, causes these secondary rays B to be projected convergingly downward as indicated, so as to focus at or near the ground for lighting the changing foreground, while the parallel rays 35 A from the upper reflector light the distance to the limit of their projection.

The rear end 17 of the auxiliary reflector is preferably formed semicylindrical, with a. concave reflecting surface below the lamp as a center, so that downward rays from the lamp are reflected upwardwith other upward rays from the lamp, and increase the brightness of the rear end of theupper reflector. v V

The said open spaces 10 obviate any chance of accidental rays or diffused light being v reflected upward outside the headlight into the eyes of'an. adjacently passingmotoristf We do not Iimitour invention to the construction shown, except by the appended claims. I

We claim: 1. A headlight comprising the upper half of a parabolic reflector, a lamp mounted therein, a casing having a curved top and I vertical sides below the horizontal axis which are connected by a substantially trapezoidal bottom, an auxiliary multifaced re flector of substantially trapezoidal shape corresponding" to said bottom and hinged at its straight rear edge for adjustment between said straight sides of the casing, and adjusting means therefor, substantially as j described.

2.1m aheadlight,the combination with a main reflector and its lamp, of a casing hav- I signatures.

inga substantially trapezoidal bottom connecting vertical sides, an auxiliary reflector of corresponding trapezoidal shape having integrally" formed transverse reflecting slats and" vertical sides and hinged by its straight rear edge at the rear of said casing, and means to adjust the auxiliary reflector, substantially as described. 1

i In testimony whereof, we have affixed our WILLIAM H. KAY; ESKEL MoDANIEL.

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