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402,930 · Jacobs · "Illuminating-Tile" · Page 2
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402,930: 2 of 5

After the lenses B and B are in position upon the tile A the spaces between the same, the lugs a' and a', and the flange (if a flange is provided) are filled with a cement, C, which is capable of being applied in a plastic form and will afterward harden, so as to make a walking-surface that is flush with the upper faces of said lenses and lugs.
    For the purpose of giving to the tile an ornamental appearance the upper ends of the lugs a' and a' may have an ornamental form, or they may have such height as to permit an encaustic tile, D, to be placed over each lug, as shown in Figs. 5 and 7, in which last-named construction the walking-surface would be composed of glass, encaustic tiles, and cement, with no iron in sight, except around the edges in case of the employment of the marginal flange.
    The tile thus constructed is capable of use in any position, as its strength may be readily adapted to the purpose and position, while in consequence of the omission of curbs around the light-openings the latter may be placed nearer to each other than would otherwise he practicable, and thereby a large increase in illuminating area secured.
    Having thus described my invention, what I claim is--
    1. An illuminating-tile in which the lenses are separated and located solely by means of lugs that are formed upon and project upward from the body of the tile at points midway between the contiguous light-openings, substantially as and for the purpose specified.
    2. An illuminating-tile in which is combined it metal body that is provided with light-openings which have no surrounding curbs and
between such light-openings is provided with upwardly-projecting lugs, glass lenses which are placed over the light-openings, and cement or other like material that is placed within and caused to fill the spaces between the lenses, substantially as and for the purpose shown.
    3. An illuminating-tile in which is combined a metal body that is provided with light-openings and upwardly-projecting lugs between the same, glass lenses which are placed over the light-openings, a cement that is placed within and caused to fill the spaces between said lenses, and encaustic tiles which are embedded within the cement over each of the lugs, substantially as and for the purpose set forth.
    4. All illuminating-tile in winch the metal body is provided upon its lower face with a series of straight intersecting ribs that are located in each space between the contiguous light-openings, substantially as and for the purpose shown and described.
    5. An illuminating-tile in which the metal body is providied with light-openings that are without curbs, and upon its upper face has upwardly-projecting tugs between such openings, and upon its lower face is provided with straight intersecting ribs that are located between said openings, substantially as and for the purpose specified.
    In testimony that I claim the foregoing I have hereunto set my hand this 2d day of March, 1889.
JACOB JACOBS.
Witnesses:
    GEO. S. PRINDLE,
    JAS. E. HUTCHINSON.