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340,370 · Schreiber · "Illuminating Tile-Plate" · Page 1
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UNITED STATES PATENT OFFICE
WILLIAM A. SCHREIBER, OF CINCINNATI, OHIO, ASSIGNOR TO THE
L. SCHREIBER & SONS COMPANY, OF SAME PLACE.
SPECIFICATION forming part of Letters Patent No. 340,370, dated April 20, 1886.
Application filed December 19, 1885. Serial No. 186,202. (No model.)
To all whom it may concern:
Be it known that I, WILLIAM A. SCHREIBER, a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Illuminating Tile-Plates, of which the following is a specification.
My invention relates to means for illuminating pavements, vaults, buildings, or doors.
The object of my invention is to provide a more durable plate for retaining the lens, and one which can be more cheaply made, and which will allow it to be constructed of arched or varying configuration in cross-section, all of which will be more fully set forth in the description of the accompanying drawings, making a part of this specification, in which--
Figure 1 is a top plan view of my invention; Fig. 2, a cross-section on line x x, Fig. 1. Fig. 3 is an elevation showing the plate of arched form, and Fig. 4 is a plan view of the under side of the preferred form when it is desired to increase the number of lenses.
A represents a rolled plate.
B represents a glass lens, which is of conical form in cross-section.
In plate A, I pierce a series of orifices, whose area is the same or a little less than the area of the smaller portion of the cone B.
C represents a cup-shaped rim. It is provided with an annular flange, a.
b b represent rivets, which secure the rim to the plates.
The aperture in the bottom of the cup or rim C is the same size as the aperture pierced through the plate A, while the conical base of the lens is of larger area, so that it will be held in place by the cup of the rim. The sides of the rim converge and terminate in a curved lip, c, which lip engages under the bottom of the lens B, so as to hold it in position.
E represents cement, which is filled in around the lens B and between it and the rim C, so as to prevent leakage and keep the lens from working laterally in its seat or bed.
By making the rim C of plate metal it may be stamped out so that the flange a may be of any curved form in cross-section; hence the plate A can be made of arched or curved form, as shown in Fig. 3, or even of corrugated form,
provided the arcs of the curves are not made too abrupt.|
By making four or more rivets, b, to each lens a sufficient amount of raised and roughened surface is provided to prevent the slipping of the foot when the same is used for vault-lights.
Fig. 4 shows segments of the flanges a cut out to set the lenses close together.
The cup-plates C strengthen and support the device, and hence both the plate A and the rim C can be made of rolled metal and stamped in the desired shape, and yet secure the lens B in the desired position.
By reason of the conical form of the lens no light is lost, as the aperture in the rim C is the same size as the aperture in the plate A.
The conical space between the lens and sides of the cup allows the rim and flanges to be made in varying curved lens in cross-section without impairing the fit of the lens in the cup.
Having described my invention, what I claim is--
1. In combination with the plate A, provided with the lens-apertures, the rim C, secured thereto by rivets and provided with a same-sized aperture, and the conical lens B, having its lower portion of larger diameter than the openings in plate A and rim C, and secured between the plate and rim, substantially as specified.
2. In combination with the plate A, pierced with lens-apertures, the cup C, formed from plate metal and with converging sides, as described, and the curved lip c and conical lens B, secured under the aperture in the plate by riveting the rim to the plate, substantially as specified.
3. In combination with the plate A, pierced with lens-apertures and bent in a curved form, the rims C, stamped from plate metal, and provided with a lens-aperture and secured to the curved plate A and holding the lenses B in their seats, substantially as specified.
In testimony whereof I have hereunto set my hand.