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Patents: 381 of 511
UNITED STATES PATENT OFFICE.
JACOB JACOBS, OF BROOKLYN, NEW YORK.

DESIGN FOR A GLASS OR LIGHT.
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Jacob Jacobs
46 of 57

SPECIFICATION forming part of Design No. 27,704, dated September 28, 1897.
Application filed May 21, 1897. Serial No. 637,605. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, JACOB JACOBS, of Brooklyn, in the county of Kings, and in the State of New York, have invented a certain new and original Design for Glasses or Lights for Illuminating-Gratings; 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 is a perspective view of a lens embodying my design, and Fig. 2 is a cross-section of the same.
    Letters of like name and kind refer to like parts in each of the figures.
    The object of my invention is to provide a design for glasses or lights for illuminating-gratings; and to this end said invention consists in the design for a glass or light, substantially as hereinafter set forth.
    The leading feature of my design consists
of a plate, an angular projection or prism thereon, and a spherically-curved swell or protuberance on the prism.
    The glass consists of a rectangular plate A, from which projects a rib or prism B, on one side of which is formed a spherically-curved swell or protuberance C. On each of the four sides of the rib or prism, a short distance from the plate A, is a small projection or rib D.
    Having thus described my invention, what I claim is—
    The design for a glass or light, substantially as set forth.
    In testimony that I claim the foregoing I have hereunto set my hand this 12th day of May, 1897.
JACOB JACOBS.
Witnesses:
    CHARLES ZERBARINI,
    PASQUALE GARDELLA.