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270,132 · Ross · "Illuminating-Tiling for Vaults, &c." · Page 1 Home  > Prism Glass  > Patent Index  > Page 1

270,132: 1 of 3

Patents: 142 of 530	UNITED STATES PATENT OFFICE C. HANSEN ROSS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO L. OTIS DAUCHY, OF SAME PLACE. ILLUMINATING-TILING FOR VAULTS, &c.	Christian H. Ross 1 of 3
SPECIFICATION forming part of Letters Patent No. 270,132, dated January 2, 1883. Application filed August 12, 1882. (No model.)

To all whom it may concern:     Be it known that I, C. HANSEN ROSS, of Chicago, in the county of Cook and state of Illinois, have invented certain new and useful Improvements in Illuminating-Tilings for Vaults, &c., which are fully set forth in the following specification, reference being had to the accompanying drawings, in which--     Figure 1 represents a plan view of a section of tiling containing my improvements; Fig. 2, a detail section of the frame, taken through one of the lens-openings; Fig. 3, a similar section taken on the line X X, Fig. 1; Fig. 4, an elevation of my improved lens detached; Fig. 5, a similar view, showing a modification in the form of the lens; and Fig. 6, a detail section, showing a section of frame and single lens of old construction.     My invention relates to the form of the lens, whereby a greater quantity of light is permitted to pass below the frame than with the usual form, and the light below the tiling is also more generally diffused; and it also relates to the fastening device by means of which the lens is secured to the frame.     I will proceed to describe in detail the construction and application of my invention, and will then point out definitely in the claims the special improvements which I believe to be new and desire to protect by Letters Patent.     Illuminating-tiling consisting of a suitable frame with glass lenses inserted in openings therein is old; but heretofore the glass lenses have been constructed and arranged to rest upon a seat in the opening of the frame, the lens being inserted from the top of the latter. An illustration of this construction is shown in Fig. 6 of the drawings. Obviously the projecting seat will prevent many rays of light which fall upon the surface of the lens from passing below the frame; and it is also obvious that the lens is not very securely held in the frame, being entirely dependent upon the cement in the annular cavity between it and the frame in the lens-opening. It has been proposed to remedy the latter of these disadvantages by forming the glass with a screw-thread to fit a corresponding thread on the concave surface of the opening in the frame, the glass being

also provided with a laterally-projecting flange below the frame, and a packing being inserted between this flange and the under side of the frame; but the experiment of using a glass cylinder as a screw has not proved practically successful, and the reliance for holding the glass in the frame must still be mainly on the cement, for which, moreover, this construction does not provide so secure a lodgment as the older form show in Fig. 6 of the drawings. With a view, therefore, to remedy effectually both the disadvantages which I have named, I have devised a mode of fastening which secures the lens in the frame independently of cement, (though the latter is still used for the purpose of making the tiling water-tight,) and at the same time admits of extending the lens below the frame for the purpose of a greater diffusion of light in the vault.     In the drawings, A represents the frame, of any suitable material, metal being preferred, which is provided with openings B, of the usual circular form, for the reception of the lenses, the openings being preferably slightly flaring.     A seat, b, is provided near the bottom of the opening, as usual, for the lens; but this seat is polygonal in contour instead of being circular, like the opening above it, and the opening down through the frame below the seat is of corresponding form. The straight sides of the seat extend across from side to side of the opening, being cut in even with the main opening above, as shown in full lines at a in Fig. 1 of the drawings. The upper face of each of the seats b is inclined, each incline b representing substantially the section of a screw-thread, as shown in Fig. 2 of the drawings.     The glass lens C is provided with a flange, c, extending around its body and polygonal in shape to correspond with the polygonal section at the bottom of the opening. The main body of the lens extends below this flange a distance equal to the depth of the seat in the opening, and is then broadened below the frame, making a section, c', considerably wider than the openings in the frame. This section may be made in any form desired. In Fig. 4 it is oval; in Fig. 5 it is represented in conical form.