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428,493 · Jacobs · "Illuminating-Tile" · Page 2 Home  > Prism Glass  > Patent Index  > Page 2

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resemble a number of separately-formed lenses, and has on its lower side strengthening-ribs that are formed integral with said plate and are arranged beneath and in line with the recesses in its upper side, in combination with cement that is placed within and caused to fill such recesses, substantially as and for the purpose shown.     4. As an improvement in illuminating-tiles, a lens which is composed of a plate of glass that has its upper side recessed to cause it to resemble a number of separately-formed lenses, and has on its lower side a number of strengthening-ribs, in combination with encaustic tiles and cement that are placed within and caused to fill such recess, substantially as and for the purpose set forth.     5. As an improvement in illuminating-tiles, a lens which is composed of a plate of glass that has its upper side recessed to cause it to resemble a number of separately-formed lenses, and has a recess in its lower side in which are formed several bosses and intersecting ribs, in combination with encaustic tiles and cement that are placed within and caused to fill the recesses in the upper side of said plate, substantially as and for the purpose shown.     6. As an improvement in illuminating-tiles, a lens which is composed of a plate of glass

that has its upper side recessed to cause it to resemble a number of separately-formed lenses, in combination with encaustic tiles and cement that are placed within and caused to fill such recesses, substantially as and for the purpose shown.     7. As an improvement in illuminating-tiles, a lens which is composed of a plate of glass that has its upper side recessed to receive encaustic tiles and cement, and is provided within such recesses with lugs which are adapted to center such encaustic tiles, substantially as and for the purpose set forth.     8. An illuminating-tile which is composed of a metal frame having square openings, lenses that are adapted to fit within such openings and are each provided with a recessed upper face, encaustic tiles that are placed within the recesses of each lens, and cement which is placed within and caused to fill the spaces between the sides of such recesses and said encaustic tiles, substantially as and for the purpose shown and described.     In testimony that I claim the foregoing I have hereunto set my hand this 7th day of October, A. D. 1889. JACOB JACOBS. Witnesses:     GEO. W. TICE,     D. G. BUCHING.