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509,030: 1 of 4

Patents: 270 of 530	UNITED STATES PATENT OFFICE. HENRY HAUSTEIN, OF SAN FRANCISCO, CALIFORNIA.	Henry Haustein 4 of 4
ILLUMINATING-TILE. SPECIFICATION forming part of Letter Patent No. 509,030, dated November 21, 1893. Application filed April 6, 1893. Serial No. 469,808. (No model.)

To all whom it may concern:     Be it known that I, HENRY HAUSTEIN, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented certain new and useful Improvements in and Relating to the Construction of Illuminating-Tiles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.     This invention has for its object improvement in glazed tiles or covers that are used to convey light into vaults, elevator-shafts, and various apartments in a building.     It consists, in the first place, in providing a novel mode of construction for this class of devices whereby I am enabled to have both faces of the glass flush with the filling on both sides of the supporting plate, and to thereby produce tile-work that looks better finished and transmits more light than is obtainable where one face of the glass is partly concealed within the tile-plate or the filling material therein.     It further consists in providing the tile-plate, around the openings where the glass lenses are set, with ribs or flanges of peculiar construction, which serve to strengthen the plate and form pockets wherein the filling material may spread and secure a firm hold on said plate and consequently upon the lenses therein.     Referring to the drawings,-- Figure 1 is a partly-broken sectional elevation of an illuminating-tile with single lenses constructed according to the principle of my invention. Fig. 2 shows two plans of the same, one having round lenses and the other square ones. Fig. 3 is a broken sectional elevation of an illuminating-tile having double lenses and ribs projecting from both sides of the tile-plate. Fig. 4 is a plan of the construction shown at Fig. 3, the latter figure being a section on the line x x of said Fig. 4. Fig. 5 is a broken sectional elevation of an illuminating-tile provided with double lenses of quadrangular shape and flanges surrounding the same on both sides of the plate. Fig. 6 is a

plan of the tile illustrated at Fig. 5. Fig. 7 is an elevation of an illuminating-tile mounted in and arranged to swing within an outer frame or casing. Fig. 8 is a plan, partly in section, of the tile and frame shown at Fig. 7.     Corresponding parts are indicated by corresponding letters of reference in all the views.     In the figures, A represents a metallic plate or grating provided with light-openings B and surrounded at the ends and sides by flanges C that project laterally from both faces of said plate or grating.     Within or over the openings B are set blocks of glass or lenses D, the outer surfaces of which are brought into line with both edges of the flanges C and therefore with the border flange of the tile-plate on both sides. One or two lenses may be used to fill or cover each opening. Single lenses are preferred for the thinner tiles, but double lenses may be used for the thicker ones. If single lenses are employed they are preferably made as shown at Fig. 1, that is provided with a tapering portion forming a groove d between a central flange d' and an end flange d². The tapering portion allows the lenses to be readily passed through the light-openings in the plate, on one side of which the central flanges are brought to bear, while the groove is well adapted to hold and retain cement filling that may be packed upon the end flange on the opposite side of said plate. If two lenses are used they may be set with their larger surface next to and covering the light-openings on both sides of the tile-plate, as represented at Figs. 3 and 5. But the lenses may be made and applied in other ways as long as the object of the invention is accomplished, as aforesaid, by exposing the surface of the glass on both sides of the tile.     Around the light-openings and concentrical therewith is a series of ribs E that project outwardly from both sides of the tile-plate. These ribs are cone-shaped in cross-section, curved on both sides, and forked at the ends, as shown at Fig. 4. They thus constitute on each side of the plate, around each opening, broken but interconnected flanges that cover much of the surface of the plate on both sides and at the same time leave empty spaces in and about them forming pockets or cavities in which the plastic material that enters into