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Patents: 408 of 511
UNITED STATES PATENT OFFICE.
FRANK C. SOPER, OF CHICAGO, ILLINOIS, ASSIGNOR TO
THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-LIGHT.
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Frank C. Soper
13 of 16

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Luxfer: 41 of 88

SPECIFICATION forming part of Design No. 27,974, dated December 7, 1897.
Application filed November 1, 1897. Serial No. 657,101. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, FRANK C. SOPER, 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-lights.
    Figure 1 is a plan view of a prism-light embodying my design. Fig. 2 is a cross-section therethrough.
    A is the body of the prism-light; B, one side thereof; C C, a series of prisms on the opposite side of a certain side or depth; D D, a series of other prisms of a less size or depth. These prisms of different sizes or depths are
arranged with reference to each other on the prism side of the plate so as to form a figure or pattern.
    The essential features of my design are found in a prism-light comprising a substantially flat body with prisms thereon, the prisms on one side being of different sizes or depths and arranged so as to form figures or patterns.
    I claim--
    A design for a prism-light, substantially as shown and described.
FRANK C. SOPER.
Witnesses:
    JEAN ELLIOTT,
    HOMER L. KRAFT.