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402,931: 1 of 3

Patents: 225 of 530	UNITED STATES PATENT OFFICE JACOB JACOBS, OF NEW YORK, N. Y. ILLUMINATING-TILE.	Jacob Jacobs 18 of 57
SPECIFICATION forming part of Letters Patent No. 402,931, dated May 7, 1889. Application filed March 9, 1889. Serial No. 302,592. (No model.)

To all whom it may concern:     Be it known that I, JACOB JACOBS, of New York, in the county of New York, and in the State of New York, have invented certain new and useful Improvements in Illuminating-Tiles; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which-     Figure 1 is a perspective view of the upper side of my tile before the lenses are placed in position. Fig. 2 is a like view of the same when combined with the lenses; and Figs. 3 and 4 are sections upon lines x x and z z, respectively, of Fig. 2.     Letters of like name and kind refer to like parts in each of the figures.     The object of my invention is to increase the light-transmitting capacity of an illuminating-tile; and said invention consists, principally, in an illuminating-tile which is provided with the usual glazed light-openings, and between the same has other and smaller glazed light-openings, substantially as and for the purpose hereinafter shown.     It consists, further, in an illuminating-tile which is provided with glazed light-openings that are arranged in parallel lines, and at points midway between each group of adjacent light-openings is provided with other and smaller glazed light-openings, substantially as and for the purpose hereinafter set forth.     It consists, finally, in an illuminating-tile which is provided with the usual glazed light-openings, and between the same has other and smaller glazed light-openings, and between such openings has a filling of concrete, substantially as and for the purpose hereinafter shown and described.     In the carrying of my invention into practice I employ a metal plate or tile, A, which is provided with light-openings a and a, that are arranged in parallel lines, and are each provided with a curb, a', which extends above the upper face of the tile, as shown in Fig. 1. At a point midway between each group of

four of said openings a and a is another light-opening, a², that is also provided with a curb, a³, but has a considerably smaller area than the adjacent openings, so as to prevent weakening of the tile. Into each of the openings a and a² is now fitted a lens, B or B', and the same secured in place by means of cement, C, applied between its periphery and the adjacent wall of the opening, after which other cement, D, is placed within and caused to fill the spaces between said lenses, so as to form a walking-surface that is flush with the upper faces of the latter. The small lenses thus provided materially increase the light-transmitting capacity of the tile and add to the appearance of the same without in any manner lessening its strength, as the curb of each of said openings gives to the metal plate as much stiffness at least as would be obtainable were said plate made solid and plain at such point.     Having thus described my invention, what I claim is--     1. An illuminating-tile which is provided with the usual glazed light-openings and between the same has other and smaller glazed light-openings, substantially as and for the purpose shown.     2. An illuminating-tile which is provided with glazed lights that are arranged in parallel lines, and at points midway between each group of adjacent light-openings is provided with other and smaller glazed light-openings, substantially as and for the purpose set forth.     3. An illuminating-tile which is provided with the usual glazed light-openings, and between the same has other and smaller glazed light-openings, and between such openings has a filling of concrete, substantially as and for the purpose shown and described.     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.