US1696793A - Headlight - Google Patents

Description

Dec. 25, 1928.

J. P. C. CHARLEBOIS HEADLIGHT Filed Feb. 17, 1927 Patented Dec. 25,- 1928.

UNITED STATES OSEPH no. CHARLEBOIS, or Tononro, on'mruo, CANADA.

HEADLIGHT.

Application filed February 17, 1927. Serial No. 168,940.

The invention relates to improvements in headlights as described in the present specification andshown in the accompanying drawings that form a part of the same.

The main object of the invention is to eliminate the glare by the provision of reflectors so arranged in relation to each other within the headlight that the rays from the lamp, which is concealed, are concentrated on one reflector for deflection in the desired plane in advance of the head light. 3

And generally the objects of the invention' are to provide an efficient non-glare headlight of simple construction, which may be produced at low cost.

The invention consists in the novel features of construction, arrangements and combinations described in the present specification and more particularly pointed out in the claim for novelty following.-

In the drawings Figure l is a front elevation of a headlight with various portions thereof broken away to disclose the interior elements.

Figure 2 is a vertical sectional view taken on the line 22 of Figure 1, certain of the parts being shown in full.

Figure 3 is a plan view of the headlight,

with portions thereof broken away to dis-- close the interior.

Like numerals of reference indicate cor responding parts in the various figures.

Referring to the drawings 1 is the casing which may be of any desired shape although shown in the drawings as being substantially spherical in form, said casing being reduced annularly as at 2 for the reception of the removable retaining rim 3 in which the lens 1 is mounted.

"he means for mounting the headlight on the vehicle comprises a bracket 5 rigidly secure-iii on the inner face of the casing 1 and having an offset portion 6 projecting through an opening in the under side of the casing, said offset portion being so designed as to present a horizontal base portion 7 through which extends a hollow bolt adapted to thread into a suitable bracket carried by the vehicle, the head 10 of said bolt being positioned within the offset portion of the bracket 6.

11 is a metal band which extends around the inner periphery of the casing 1 substantially midway of the height thereof and at porting the reflectors, as will be right angles to the axis of said casing, said band. being provided-with a lateral flange 12constituting a ledge, or bracket, for sup pointed out more fully hereinaften .7 The reflector 13 in which the lamp 14; is mounted is parabolic in form and is posi tioned within the'lower half of the casing with its axis at right angles to'the axis of said casing so that the light rays from the lamp therewithin will be thrown upwardly within. said casing,'said reflector being provided with an 'a inuar flange 15 around the edge thereof adapted to rest on the ledge 12. The flange 15 of the reflector is provided with an offset portion 16 adapted to be pressed against the under side of the ledge 12 as to hold the reflector rigidly to its position. v V i The lower portion of the headlight, that is the portion below the plane of the top edge of the reflector 13, is rendered opaque by the provision of a plate 17, whichplate may form an integral part of the reflector and may be continued completely around the rim of the casing as at 18 to increase the solidity of the reflector mounting, as shown in the drawings, or, said plate may form a separate element, as desired.

The plate 17 is preferably concaved centrally to provide a substantially parabolic reflector 19 for the reception of a dimmer light 20, but this feature may be dispensed with where dimmer lights are not required.

The reflector on which the light rays are concentrated for deflection to the road surface comprises a main body portion 21 set at an angle of 45 degrees in relation to the vertical axis of the reflector 13, and integral side pieces 22, the body 21 throughout the, greater portion thereof being slightly great-' or in width than the diai'neter of the reflector 13 at its widest point and being mounted between the flange 15 at the rear of the reflector 13, as shown in dotted lines in Figure 8, and the top front edge of the casing, said casing preferably being provided with a downwardly turned lug 23 against whichthe top end of the reflector 21 is adapted to rest, and the side pieces 22 being of the required dimensionsto close the top half of the easing around the body 21 and abutting the inner face of the ring 18.

It will thus be apparent that all light rays are thrown vertically upwardly by the low reflector 13 against the inclined reflector and are deflected outwardly thereby on a horizontal plane.

The lamp socket 24: in which the clamp 14: is mounted is supported by means of a bracket 25 having its outer, or lower, end turned at right angles and mounted on a screw 26 which extends through the opening in the bolt 8 in threaded engagement with the threaded interior of said bolt to permit of effecting the vertical adjustment of said lamp, saidscrew being. provided with a suitable head27.

26 is a sprmg encircling the screw 26 between the bolt head 10 and the bracket 25 to hold said bracket to its uppermost position on said screw.

The current to the various lamps is conduct-ed through the wires 28 extending through a suitable fitting 29 projecting through the casing at any desired point.

In the operation the light rays from the reflector 13 are thrown upwardly against the inclined reflector elements 21 and 22 by means of which they are deflected outwardly on a horizontal plane. Should it be necessary to alter the focus of the rays it is simply necessary to turn the screw 26 in the direction necessary to effect the vertical adjustment of the lamp 14 in the required direction.

The present invention provides a headlight of economical construction, in which the element ofglare is effectually minimized and in which the adjustment of the lamp may be effected without the necessity of disassembling the structure.

hat I claim is A headlight including a substantially semicircular casing, a band secured to the inner surface of the casing at substantially its mid-height and formed to provide a lateral inwardly projecting flange, a plate arranged at the forward portion of the casing and masking the lower half thereof, a parabolic reflector arranged in the casing with its axis at right angles to the axis of the casing, the upper edge of said reflector having a lateral flange secured at its forward edge to the upper edge of said plate and interlocked at its rear edge with the flange of said band, a plane reflector overlying the parabolic reflector with an edge outline corresponding substantially in shape and dimensions to that of the parabolic reflector, the lower edge of the plane reflector being supported on said band flange in rear of the parabolic reflector and the upper edge of the plane reflector bearing against the forward edge of the casing, said plane reflector including side portions curving substantially concentric with the casing with thei-r free edges engaging the casing at the forward edge of the latter, and a source of illumination Within the parabolic reflector.

Signed at Toronto, Ont, this 30th day of November, 1926.

JOSEPH P. C. CHARLEBOIS.

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