US1271819A - Illuminant. - Google Patents

Description

P. H. WILSON,-W. SUTTON &.B. JONES.

ILLUMINANT. I

APPLICATION FILED MAR. 15. 19 7.

7.7 J I 77 Z.

Pevcy t WilSOn 813 an 13 n, OZM'HA w UNITED STATES PATENT OFFICE.

PERCY HUNT WILSON, 0F NORFOLK, VIRGINIA, AND WOODRUFF SUTTON AND BASSET'I JONES, OF NEW YORK, N. Y., ASSIGNORS TO JAMES NORFOLK, VIRGINIA.

G. WILSON CORPORATION, OF

ILLUMINAN'I.

Patented July 9, 1918 Application filed March 15, 1917. Serial No.155,136.

To all whom iztmay concern:

Be it known that we, PERCY HUNT WIL- SON, resident of Norfolk, Virginia, and WooDRUFr SUTTON and BASSETT JONES, residents of New York, N. Y., all citizens of the United States, have invented certain new Improvements in Illuminants, of which the following is a specification.

Our invention relates particularly to de vices used in improving the illumination of rooms, halls, and the like.

It has for its objects to transform direct rays of light coming from without an inclosure into difi'used light with a minimum loss of general lighting effect, and to provide for the concentration of such diffused light in certain regions of the inclosure.

The drawings show an ordinary Venetian blind, my invention being embodied in the general structure of same. Figure 1 is a front elevation inside. Fig. 2 is a vertical cross section.

The tiltable slats 1 are arranged in the ordinary manner, with suitable mechanism for tilting and positioning them. The structure shown is an inside shutter. An outside one is equally suitable.

The outside surfaces 2 of the slats are polished and are good specular reflectors or deflectors, like a mirror. A coating is used like white enamel or other suitable reflecting material which will retain the light-reflecting qualities as long as possible. The inner surfaces 3 have a fiat or lightdiflusing finish. The coating is white or of light neutral tint, preferably on lithopone base, to retain the light-reflecting properties.

The slats may be positioned to cut ofi all direct light from the inclosure or room. All direct rays of light then impinge upon the polished, mirror-like surfaces 2, and are reflected or ideflected upon the light-diflusing structure gives a very large amount of eflective light in all parts of the room. In the ordinary proportions of slats of Venetian blinds, the maximum amount of light is passed when the slats are tilted just enough to cut off direct rays of light from outside.

We do not limit ourselves further than is indicated in the claims that follow:

We claim:

1. An illuminating device comprising a plurality of adjustable reflectors; one of said reflectors being adapted to intercept and reflect obliquely and specularly light from a given source; another being adapted to in tercept and diffuse said rays from said first reflector.

2. An illuminating device comprising a plurality of adjustable reflectors; one of said reflectors being adapted to intercept and reflect obliquely and specularly light from a given source; another being adapted to in tercept and diffuse said rays from said first reflector with a maximum of difiused reflected light at the point desired.

3. An illuminating device comprising a plurality of tiltable slats associated after the fashion of a Venetian blind, adapted to be tilted to intercept all direct rays of the sun, moon, or othensource of light; the outer surfaces of said slats being adapted to give specular reflection of light; the inner surfaces being adapted to give diffused reflection of light.

4. An illuminating device comprising a plurality of tiltable slats associated after the fashion of a Venetian blind, adapted to be tilted to intercept all direct rays of the sun, moon or other source of light; the outer surfaces comprising white enamel on a ponolith base highly polished; the inner surfaces comprising a coating of dead finish and light neutral tint on a ponolith base.

5. An illuminating device comprising a plurality of parallel spaced slats adapted to be arranged between a source of light and an area to be lighted, the faces of said slats toward the said source, having a surface adapted to specularly reflect the light upon the opposing faces of the adjacent slats and the said opposing surfaces being adapted to reflect and diffuse the light, substantially as set forth, into the area to be lighted.

6. An illuminating device comprising a plurality of parallel spaced slats adapted to be arranged between a source of light and the amount and direction of the light trans- 10 an area to be lighted, the faces of said slats mitted by them may be varied.

toward the said source having a surface adapted to specular-1y reflect the light upon the opposing faces of the adjacent slats and BASSETT JONES. V

the saidopposing surfaces being adapted to reflect and diffuse the light, substantially as Witnesses:

set forth, into the area to be 1i hted, said JESSIE SEIDENBERG, slats being connected and rotatab e whereby EVELYN ANDERSON.

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