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D21,861 · Jacobs · "Design for a Lens for Illuminating-Tiles, &c." · Page 1
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D21,861: 1 of 2

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Patents: 255 of 511
UNITED STATES PATENT OFFICE
JACOB JACOBS, OF BROOKLYN, NEW YORK.

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Jacob Jacobs
29 of 57
DESIGN FOR A LENS FOR ILLUMINATING-TILES, &c.
SPECIFICATION forming part of Design No. 21,861, dated September 20, 1892.
Application filed July 18, 1892. Serial No. 440,408. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, JACOB JACOBS, a citizen of the United States, and a resident of Brooklyn, in the county of Kings, and in the State of New York, have invented a certain new and useful Design for Lenses for Illuminating Vault-Covers, &c.; 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 shows a plan view of a lens shaped in accordance with my design; Fig. 2, a view of the same in side elevation; and Fig. 3, a perspective view of a lens embodying my design, with the projecting base appearing in the other figures shown in dotted lines.
    Letters of like name and kind refer to like parts in each of the figures.
    The object of my invention has been to produce a new, useful, and original design for lenses for use in illuminating tiles, vault-covers, &c.; and to this end my invention consists in tile design as hereinafter specified, and shown in the drawings.
    The leading feature of my design consists in the scalloped form of the body of the lens, whether the latter has or has not a projecting base to rest upon the tile or vault-cover frame around the edges of a light-opening therein.
    In the drawings, A designates the lens-body, which in general form is rectangular
as see in the plan view. The sides of such body are upright and formed with a series of scallops, which have a series of rounded ribs or projections, which extend upward to the upper edge of the body, so that such edge, as seen, when the body is embedded in the usual holding cement or concrete on the supporting-frame will be in a waved or scalloped line, giving to the tile or cover an attractive and ornamental appearance.
    The lens shown in the drawings has a projecting base a at the lower end of the scalloped body, which can be of any desired shape or be dispensed with altogether without involving any departure from my invention, which has to do only with the shape of the main part or body of the lens.
    Having thus described my invention, what I claim is--
    The design for lenses for illuminating tiles, vault-covers, &c., in which the lens-body has its sides scalloped, so that they consist of a series of upright ribs extending throughout the body to the top of the latter, as herein shown and described.
    In testimony that I claim in the foregoing I have hereunto set my hand this 16th day of June, A. D. 1892.
JACOB JACOBS.
Witnesses:
    GEO. W. TICE,
    E. J. JACOBS.