US1513683A - Lamp - Google Patents

Description

Oct. 28 1924 L. E. wEsToVER LAMP Filed June 21, 19,22

ATTORNEY. L

Patented Oct. 28, 1924.

entree stares LESLIE E. WESTOVER, OF DENVER, COLORADO.

LAMP.

Application fined June 21,

To all whom it may concem:

Be it known that I, Lasnn: E. WEsTovEn, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

My invention relates to improvements in lamps of the type used for illuminating distant places or objects and its principal object is to rovide a lam in which the glare of the lig t produced t erein is eliminated without diminution of the intensity of the emitted ra s. With this object in view, my invention is particularly adapted for use as a head light for automobiles, locomotives and other motor driven vehicles, or as a dirigible spot light of the kind used on vehicles and in theatres.

An embodiment of the invention has been illustrated in the accompanying drawings in the various views of which corresponding parts are similarly designated, and in which Figure 1 represents a partially sectional side elevation of a head light constructed in accordance with the present invention;

Figure 2, a vertica section taken on the line 22, Figure 1;

Figure 3, a. horizontal section along the line 3r3, Figure 1; and

Figure 4, a front elevation of the head ht drawn to a reduced scale.

eferring more s ecifically to the drawings, my improved amp consists of a housing 5 having in its upper portion a lasscovered openin 6 through which the ight rays are emitte Facing the opening in a slanting position, is a reflector 7 upon which impinge the light rays originated in a source which is concealed in the lower portion of the housing.

The source of light consists in the construction shown in the drawings, of an incandescent bulb 8 which receives its electric current through conductors 9 terminating in a socket 1O 1n the bottom of the housing,

' and said bottom is preferabl concaved and interiorly polished tofunction as a reflector 21 which throws the l' ht produced by the bulb, in the directiono the slanting reflector which reflects the li ht rays toward the glass covered opening 0 the lamp. The reflective bottom portion of the housing in which the lamp 1s mounted, is preferably 1922. Serial No. 569,908.

opening of the housing substantially evoid of excessively upwardly or laterally directed rays, which are the principal cause of the glare which, especially in head lights of automobiles, are an annoyance and source of danger to pedestrians and to drivers of approaching vehicles.

The housing may be provided with a second, smaller opening 15 below the other, which if covered by a prismatic, preferably colored glass 16, provides a pilot light which shows the direction in which the vehicle on which the lamp is mounted, travels. This second opening is however, merely an ad- ?)unct feature of the invention, and has no caring on its function of producing a light beam of maximum intensity without glare.

The slanting reflector as shown in the drawings, is concaved to direct the reflected rays toward the central portion of the lass covered 0 ening and, by intersection o the rays, pro uces a spreading light which illuminates the sides of the road as well as the art of the same which is directly for war of the vehicle. The'reflector may however be made' convex when a wider spread of light rays of lesser intensity is desired, or flat when it is preferred to concentrate the light rays to an area of limited diameter.

It is preferred to mount the reflector so that its angle may be varied in order to adjust the direction in which the light beam is emitted through the opening of the housing, according to the position in which the lamp is placed on the vehicle. With this in View, one end of the reflector is pivotally supported in bearings 17 on the housin and its opposite end is held in place by a be lows connection 18 which, by means of a tube, 19, communicates with a conveniently located source of fluid pressure.

The above described method for adjust.- ing the reflector has been heretofore used in other different apparatus and no claim is made as to the novelty of its specificconstruction.

The glass late 21) which covers the main opening" 6 o the housing may he made of any desired sectional form, a plane-convex or convene-concave shape heing referred.

The plates 13 which direct the ght rays from the source of ii ht to the slanting redoctor in parallelly lined groups, are made of thin metal the sides of which are coated in a dull hlack or other light-absorbing non-reflective color.

Having thus described the construction of my improved lamp, it will be readily seen that owing to the concealed position of the lamp and the uniform angles at which the light re s impinge upon the slanting retiector, t e glare Whic in other lamps is a constant source of annoyance and den or to pedestrians and drivers of other vehic es, is

completely eliminated While by reason of the specular reflection of the light rays originated in the electric hulb, the elimination oi? the glare does not detract from their original illuminative power.

desire it understood that within the s irit and scope of my invention as herein eecrihed and as defined in the hereunto appended claim, It may avail myself of variations in the form, construction and arr,ere,eee

rangernent of its parts from that shown in the drawin.

What I c aim and desire to secure by Lettors-Patent is A headlight comprising an elongate housing having a lass-covered openin for the emlssion o lig t adjacent an end t ereof, a source of light in the housing at its opposite end, a reflector disposed to reflect the light of said @urce toward the end of the housing rovided with the openin and a second re ector angularly disposed relative to thefirst reflector and the opening to bend the reflected liwht re s toward the latter, and a series oi para el partitions dividing the passage in the housin between the reflectors into channels restrict the light rays so that the may pass through the opening in. substantially parallel relation to each other, the housing having opposite and in spaced relation to said series of artitions, a second lass-covered openin or the emission of light at a reduced intensity.

in testimony whereof I have athxed my signature.

LESLIE E. WESTQVER.

apted to

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