US1644128A

US1644128A - Reflector

Info

Publication number: US1644128A
Application number: US47344A
Authority: US
Inventors: George B Heath
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-07-31
Filing date: 1925-07-31
Publication date: 1927-10-04
Anticipated expiration: 1944-10-04

Description

Patented Oct. 4, 1927.

UNITED STATES GEORGE B. HEATH, 0F ST. LOUIS, MISSOURI.

REFLECTOR.

Application filed July 31, 1925.

rIhis invention relates generallyfto streetlighting systems and, more particularly,.to a certain new and useful improvement in light reflectors especially adapted for use in such systems.

Present day street lighting systems in which the lamp-posts or standards are located along the street-curb, have been found largely objectionable, particularly in residence sections, so far as I am aware, in that the rays of light projected in all directions from the source disturb the privacy of abutting householders. My present invention has hence for its chief object the provision of means in the form' of a reflector so shaped and constructed as to for the most part reflect the projected rays of light outwardly towards the street and thus away from, and thereby obviate disturbance or annoyance of, abutting householders and yet at the same time permit some of the proj ected rays of light to filter through tosufiiciently illuminate the adjacent side-walk.

And with such object in view, my invention resides in the novel features of form, construction, arrangement, and combination of parts hereinafter described and pointed out in the claims.

Referring now by reference characters to th-e accompanying drawing, which illustrates a street-lamp embodying a preferred form of reflector embodying my invention, A designates a globe of glass or other suitable transparent or translucent material and of suitable form and design, topped with a suitable metal or glass cap B and adapted for support, as is common, on a post or standard, not shown. Suitably disposed within globe A and adapted for inclusion in an electric circuit, is a bulb C or other source of light-rays.

Depending within globe A, is-an arm D, supported by which within globe A in suitably centered relation to bulb or other source of light C, is a reflector E of my invention. 'This reiiector E is constructed of any suitable preferably metallic material and has preferably a polished convexed inner surface of spherical, parabolic, or other suitable curvature. A reflector of solid or rather imperforate material would reflect all the rays of light emanating from bulb C and cast a solid black or densely dark shadow. However, the present reflector E is formed or provided with a multiplicity of orifices, perforations, or other small apertures or seriai No. 47,344.

openings F, which construction, I have found,` reflects the bright rays of light of bulb C outwardly towards the street and yyet permits some of the projected rays to filter through to sufficiently illuminate the adjacent pavement, the shadow cast by the reflector to its rear being indicated approximately by the dot and dash line of the drawing and being soft or mellow. Thus in a simple and inexpensive manner, I effectively remove the present stated objection to street lighting systems of the type mentioned, without, however, affecting the efliciency of the globes A in sufficiently lighting the street and sidewalk.

It will be understood, of course, that a shifting of the reflector E relatively to the source of light C will vary the line of shadow, that the finer the perforations or openings E the denser the cast shadow, and that minor changes in the form, construction, arrangement, and combination ofthe several parts of the reflector may be made and substituted. for those herein shown and described without departing from the nature and principle of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a street lamp, an enclosing globe, a source of light within the globe, and a reflector disposed within the globe and in centered rearward relation to the source of light, the reflector comprising a body ofv suitable curvature for reflecting the lightrays outwardly towards the street, said body being provided with a multiplicity of perforations for permitting some of the lightrays to filter rearwardly therethrough for illuminating the adjacent pavement.

2. In a street lamp, an enclosing globe, a source of light within the globe, an arm disposed within the globe, and a reflector supported by said arm within the globe and in centered rearward relation to the source of light, the reflector comprising a body having a convexed surface for reflecting the light-rays outwardly towards the street, said body being provided with a multiplicity of perforations for permitting some of the light-rays to filter rearwardly therethrough for illuminating the adjacent pavep ment.

Intestimony whereof, I have signed my name to this specification.

' GEORGE B-