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Publication numberUS1148942 A
Publication typeGrant
Publication dateAug 3, 1915
Filing dateNov 3, 1914
Priority dateNov 3, 1914
Publication numberUS 1148942 A, US 1148942A, US-A-1148942, US1148942 A, US1148942A
InventorsRoland F Wilson
Original AssigneeRoland F Wilson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1148942 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




1,148,942. Patented Aug. 3,1915.



Specification of Letters Patent.

Patented au 3, 1915.

Application filed November 3, 1914. Serial No. 870.023.

object is to provide a light of this character in which the blinding effect of its reflected rays on pedestrians and operators of approaching vehicles is mitigated by means which permit the independent operation and focusing of the adjustable upper and lower portions of the reflector employed.

A further object of my invention is to provide means by which a head-light constructed in accordance with my invention may, at the will of the chauffeur, be adjusted for the reflection of the light rays upwardly or downwardly.

A further object is to provide means by which the headlight may, at the will of the operator, be converted for the reflection of a portion of the rays downwardly and another portion upwardly.

A further object is to provide means by which the head-light may, at the will of the operator, be converted to accomplish the concentration of all reflected rays to a certain point or area forwardly, which point or area would be thus brilliantlyilluminated.

In the accompanying drawing. Figure 1 is a sectional view of a headlight with my invention applied. Fig. :2 is a cross sectional view on the line 2-2. of Fig. 1. Fig. 3 is a cross sectional view on the line 3-3 of Fig. 1.

Referring in the first instance to Fig. 1, the numeral 1 indicates a small, electric. incandescent lamp, and 2 and 3, concave sections or segments of a hollow approximately spherical body, the same being placed in such relation as to form together a half section or segment of such body. In the center of such reflector is located the lamp 1. which is attached. by a bayonet joint. to a tube 4 supported in the frame or are suitably connected with the lamp. 7

Thus the same means that support and adjustthe lamp 1 also contain and protect the conductors. The upper section or segment 2 of the reflector is hinged at 6 to the inner end of tube 7, which is provided with rack teeth on its underside and arranged parallel to tubes, and like the latter, is supported and adapted to slide in the frame of the headlight. The lower reflecting segment 3 is similarly hinged at 8 to a tube 9, which islikewise provided with a rack and adapted to slide endwise. The racks of the several tubes 4, 7 and 9 engage pinions 10, 11, 12, respectively, see Fig. 3, and such pinions are mounted on stub-shafts 13 which are provided with milled heads or disks l-l. Thus, by rotating said shafts, it is obvious that the lamp 1 and the reflecting segments 2 and 3 may be adjusted forward or backward, independently or together. as required to produce different light cfl'ects.

The hinges 6 and 8 are constructed as friction-screw clamps which permit the reflectors 2 and 3 to be adjusted, i. c., rotated, in a vertical plane. and which are adapted to clamp said reflectors in any position to which they may be adjusted. lnFig. 1 the dotted lines indicate a change in the position of the upper reflector 2', and the lower one 3 may be similarly adjusted on its pivot relatively to the upper reflector and the lamp. Thus. the friction clamps permit the reflectors 2 and 3 to be adjusted. that is to say. turned up or down more or less. and thereby tilted so as to produce different focuses of the light. the reflected rays being therefore sent to different points according to the adjustment of the reflectors. It is apparent it would be even possible to tilt the reflectors so far that there would be very little concentration of light rays, the rays being in this way diffused rather than concentrated. Each of the reflectors may be adjusted forward or backward independently of the other. or they may be adjusted together so as to change their relation to the lamp and to the front of the body or frame of the headlight. Thus, by this adjustment the light rays may be concentrated at any one point forward of the headlight. For instance, experiments have shown that by pulling back the upper reflector 2 and push-. ing forward the lower reflector 3, each to a certain point, all of the reflected light rays will be projected to points below the horizontal' axis of the headlight. This adjustment is advantageous in city driving, where there are ordinances against what is known as the glare in headlights. It may also be said that if this adjustment is reversed, all the light rays would be projected to points above the horizontal axis of the headlights, and, in fact, by'adjustment can be set in such a position that, instead'of concen trating the rays, the'rays will be diffused.

I desire it understood that I do not limit myself to theprecise means illustrated and I described for eifecting the several adjustmerits.

'means for adjusting the lamp with reference I claim I v1. A headlight comprising a concave reflector, means for supporting the same and effecting its adjustment forward andback ward, a slidable and horizontal lamp-sups port, and a lamp fixed to the front terminal thereof," in the apex of the reflector, and

to the saidreflector, as described.

2. A headlight comprising a concave reflector,a lamp in the rear portion thereof,

, said reflector being in two duplicate upper and lower parts which are independently movable horizontally forward and backward to alter the position of the reflectin surface and thus cause correspondingly di erent reflections of light rays, and means for effecting adjustment of the reflecting parts, as described.

3. A head-light comprising a concave reflector made in duplicate upper and lower parts, each part being hinged to its support and thus adapted to be adjusted in a vertical plane, and means for clamping the parts in any position to which they may be adjusted relative to eachother, as and for the. pur-,

pose specified.

4. A headlight'comprising a concave reflector composed of two parts and a lamp in the rear portion thereof, horizontally slidable bars to which the reflecting parts are hinged so as to turn in a vertical plane,

the hinges being provided with a clamp-for securing the reflecting parts in any vertical adjustment, as described.

5. 'A headlight comprising a concave re-* flector made of two duplicate vupper and lower parts, horizontally slidable bars to which the respective parts are hinged, means for securing the reflecting parts in any position to which they may be swung vertically, and means effecting the forward and backward adjustment of the said bars, as de scribed.

V ROLAND -F. WILSON. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3316398 *Sep 29, 1964Apr 25, 1967Sylvania Electric ProdVariable spot mechanism
US4648014 *Apr 4, 1985Mar 3, 1987Ford Motor CompanyHeadlight or lamp for vehicles
US6478460 *Dec 4, 2000Nov 12, 2002Ichikoh Industries, Ltd.Headlamp of automobile
US6843588Dec 12, 2002Jan 18, 2005Nissan Motor Co., Ltd.Vehicular lamp system for automotive vehicle
US20030117808 *Dec 12, 2002Jun 26, 2003Nissan Motor Co., Ltd.Vehicular lamp system for automotive vehicle
U.S. Classification362/283, 362/346, 362/285
Cooperative ClassificationF21V17/02