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D27,986: 1 of 2

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Patents: 420 of 511
UNITED STATES PATENT OFFICE
FRANK L. WRIGHT, OF CHICAGO, ILLINOIS, ASSIGNOR TO
THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-LIGHT.
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Frank L. Wright
10 of 41

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Luxfer: 53 of 88

SPECIFICATION forming part of Design No. 27,986, dated December 7, 1897.
Application filed October 22, 1897. Serial No. 656,098. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, FRANK L. WRIGHT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and original Design for Prism-Lights, of which the following is a specification.
    My invention relates to designs for prism-plates.
    Figure 1 is a plan view of a prism-plate embodying my design. Fig. 2 is a section therethrough.
    A is the body of the prism-light.
    B B are a series of surface areas substantially uniform in appearance and produced by the lines of separation C C, which cross the surface of the body of the plate. D D are prisms on the opposite side.
    About the outer edge of the prism-plate are a series of ornamental lines E E, produced on the outer surface areas and which have a distinct and characteristic form, so as to produce a sort of ornamental border for the prism-plate.
    F F are ornamental lines produced on the inner surface areas, each surface area having a design formed of such lines similar to the design on the other inner areas. Thus there is produced an inner field having a sort of mosaic appearance, with an outer border having a distinct ornamentation.
    The essential features of my design are found in a prism-plate comprising a body with prisms on one side and a series of lines of separation on the other which divide it into a series of substantially uniform surface areas, the outer areas ornamented to produce the effect of a border and the inner areas ornamented in a uniform manner so as to give the effect of an inner mosaic-like field.
    I claim--
    A design for a prism-plate, substantially as shown and described.
FRANK L. WRIGHT.
Witnesses:
    OLIN H. BASQUIN,
    FRANCIS W. PARKER