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518,045 · Ransome · "Illuminating-Floor" · Page 2 Home  > Prism Glass  > Patent Index  > Page 2

518,045: 2 of 3

The under surface of the concrete floor or panel is, by preference, stepped, to suit the varying thickness of the different rows of glasses. By using glasses rectangular in plan, and making each step coincide with a side face of a row of the glasses, a brilliant effect will be given to the under side of the floor. Details of this construction are illustrated by Figs. 7 and 8, of which Fig. 7 is a longitudinal section through floor F, Fig. 1, from i to k, and Fig. 8, is a cross section of the floor taken on line l and m. Constructed in this way, the surface of each step is largely glass, the exception being only narrow faces of cement between the glasses. Thus in Fig. 8, surfaces o, o, o, are glass, while surfaces p, p, p, are cement. The light falling through the glasses from above, and radiating through surfaces o, o, o, gives a very bright and pleasing appearance to the under side of the floor.     In order to avoid difficulties of construction of the stepped under side of floor F, in Fig. 1, I sometimes make these glasses all of one uniform depth, equal to the depth of the glass of maximum thickness, and vary the thickness of the body of the glasses to suit by coring out the under surface as shown in Figs. 5 and 6; in which glasses c and d are of the same depth as the maximum thick glass b, but c is

cored out to the thickness of a, and d is cored out only slightly so as to vary but little from the maximum thickness. The relative position of these glasses in the panel or floor is shown in Fig. 2.     By maintaining a uniform depth in the glasses I am able to form a flat under surface to the panel or floor, as at H, Fig. 2, and to make the floor or panel of one uniform thickness, excepting only the variations within the glasses aforesaid.     Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is--     1. In an illuminating panel, or floor, a system of glasses of various strengths duly graduated and placed in proper relative order to themselves, and to the floor, for resisting the calculated floor strains, substantially as described.     2. An illuminating panel or floor having an off-set on the under side, the surface of which is formed in part by the face of the illuminating glass, substantially as described. ERNEST LESLIE RANSOME. Witnesses:     H. G. PATERSON,     H. F. THOMSEN.