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257,822 · Hyatt · "Illuminating Grating and Buildings Lighted Thereby" · Page 1 Home  > Prism Glass  > Patent Index  > Page 1

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Patents: 132 of 530	UNITED STATES PATENT OFFICE THADDEUS HYATT, OF NEW YORK, N. Y., ASSIGNOR TO ELIZABETH A. L. HYATT, OF SAME PLACE. ILLUMINATING-GRATING AND BUILDING LIGHTED THEREBY.	Thaddeus Hyatt 48 of 67
SPECIFICATION forming part of Letters Patent No. 257,822, dated May 9, 1882. Application filed April 19, 1882. (No model.)

To all whom it may concern:     Be it known that I, THADDEUS HYATT, a citizen of the United States, and resident of the city, county, and State of New York, have invented certain new and useful Improvements in Illuminating-Gratings and Buildings Lighted thereby, of which the following is a specification.     In the drawings attached hereto and making a part of this specification like letters refer to like parts in all the figures.     Figure 1 represents a prism-glass as ordinarily made for vessels' decks. A is the glass; a, the top surface; b, one slope of the prism; b', the other slope; B, the end or perpendicular side of the prism.     Fig. 2 represents a cluster-lens prism-glass. c c are the lenses.     Fig. 3 represents a metallic grating set with cluster-lens prism glasses. C is the metallic grating; l s, long sides of the grating.     Fig. 4 represents a cluster-lens prism-glass with enlarged reflecting prism-surfaces. b" b" are the enlarged surfaces.     Fig. 5 represents a cluster-lens enlarged reflecting-surface prism-glass made with but one reflecting-slope. b4 is the reflecting-slope; d, perpendicular or non-reflecting face of the prism.     Fig. 6 represents a single-lens prism-glass.     Fig. 7 represents a single-lens prism-glass with enlarged reflecting prism-surfaces.     Fig. 8 represents a basement and basement-extension lighted by an illuminating area-covering formed of metallic gratings set with cluster-lens prism-glasses made with enlarged reflecting prism-surfaces. D is the basement; E, basement-extension; F, illuminating stoop or area covering; f s, front or street face of the building.      Fig. 9 represents the rear wall of a building above the ground-floor or principal story, the rear wall of the extension, and the opening between the two walls for admitting light into the room. G is the rear wall above the room; H, the rear wall of the extension; I, the light-opening between the walls; J, the room lighted.     Fig. 10 represents a ground-floor or principal story lighted by a

curved illuminating-grating roof set with prism-glasses. K is the curved roof.     Fig. 11 represents a ground-floor or principal story lighted by a ventilating step-roof formed of metallic gratings set with lens prism-glasses. L is the step-roof; v', ventilating-flaps set with glass.     The object of my invention is to reflect day-light into the basement and principal story of a building without the necessity of employing "daylight-reflectors."     My improvements are based upon a form of glass represented by Fig. 1, where the whole of the reflecting-power of the prism is confined to two sloping flat reflecting-faces, indicated by the letters b and b', the ends B of the glass being perpendicular, and consequently non-reflecting.     The glass upon which my improvements are based is known to ship-builders as the "prism deck-light." My improvements upon this glass to adapt it to the purposes of lighting buildings are as follows, viz: first, forming the weather-face of the glass with a cluster of lenses, represented by c c, Fig. 2, the effect of the lenses being to enlarge the light-receiving surface of the glass; second, in combination with the lens enlarged receiving-surface, an enlarged distributing-surface, as represented by b''' and b4 in Figs. 4, 5, and 7, to compensate for the increased volume of received light due to the lenses; and, third, a lens prism-glass formed with but one reflecting-slope, as represented by Fig. 5, where d is a perpendicular non-reflecting face similar to the ends B. These glasses I call "combination lens and prism-glasses."     My improvement in combining lens prism-glasses with metallic gratings as an illuminating building material consists in setting the lens prism-glasses in the grating with the reflecting-slopes of the prisms in line with the long sides of the grating, as represented in Fig. 3; and my improvements in the method of illuminating buildings consist in constructing the illuminating rear extension-roofs and front area-coverings thereof with illuminating-gratings made in manner as represented by Fig. 3, and combining the same with the buildings