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16,540 · Ewen · "Framing Window Prism Lights by Under-cutting the Corners and Depositing Metal therein" · Page 1
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Date of Application, 13th July, 1897--Accepted, 4th Sept., 1897
Framing Window Prism Lights by Under-cutting the Corners and Depositing Metal therein
I, JOHN MEIGGS EWEN, of No. 1129 The Rookery, Chicago, County of Cook, State of Illinois, United States of America, Mechanical Engineer, do hereby declare the nature of my invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:--
My invention relates to prismatic plates or plates comprising a series of prism lights and to means for framing the same. It is illustrated in the accompanying drawings wherein
Figure 1 is a view of a series of prism lights gathered together within a frame, the parts being placed in position ready to be secured together;
Figure 2 is an eelvation of a complete prism plate;
Figure 3 is a section therethrough on the line 3--3 of Figure 2.
Like parts are indicated by the same letter in all the figures.
A is the basement or room to be lighted; B, the vault beneath the pavement which is composed of the tile sections C and D faced in opposite directions and adapted both of them to throw the light upon the prism plate E, which is preferably composed of a series of prism lights united by electro-glazing. F F are prisms which throw the light in some other direction. Of course the size, form, proportion and arrangement of the several parts may be greatly varied without departing from the spirit of my invention. The angles of the prisms in the tiles and also of the prisms in the plates will be varied, and the angle of inclination of the plate may be varied to suit varying conditions. The device is applicable to the illumination of rooms, whether basements or otherwise. The tiles are made up into a so-called pavement, though of course this pavement is nothing more than a pavement-like construction projecting substantially horizontally from the building.
I have illustrated my device as applicable to basements, but it is evident that it will be applicable to other situations where illuminating effects are to be produced.
Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is:--
1. A device for lighting basements comprising several prism tiles and transparent prism plates arranged as shown and for the purpose specified.
2. A device for lighting basements and the like comprising a series of prism tiles arranged in sections, oppositely faced, in combination with a prism plate having a comparatively smooth surface on one side with a prism surface on the other side, the several prisms set at an angle so that the light will be thrown from the one section of the prism tiles upon the prism surface of the plate and be thence reflected into the direction desired, while light from the other section of tiles will be thrown upon the smooth surface of the plate and will be transmitted therethrough and be refracted thereby so as to be directed into the room to be illuminated.