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D27,970 · Belcher · "Design for a Prism-Light" · Page 1
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D27,970: 1 of 2

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Patents: 404 of 511
UNITED STATES PATENT OFFICE.
HENRY F. BELCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO
THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-LIGHT.
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Henry F. Belcher
17 of 20

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Luxfer: 37 of 88

SPECIFICATION forming part of Design No. 27,970, dated December 7, 1897.
Application filed November 1, 1897. Serial No. 657,104. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, HENRY F. BELCHER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented and produced a certain new and original Designs 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 invention. Fig. 2 is a cross-section therethrough.
    A is the body of the prism-light; B, one side thereof; C, a series of prisms thereon; D D, a series of broken or chipped prisms.
    As illustrated in the drawings, the fractured or broken prisms present a series of
somewhat regularly-distributed, but irregularly-bordered, recessed, or hollowed-out surfaces. The work is called "fracto-work," and the appearance may be described as that of a series of rain-drops stretched along in regular rows.
    The essential features of my design are found in a prism-light comprising a substantially flat thin body with a series of mutilated prisms on one side thereof.
    I claim--
    The design for a prism-light, substantially as shown and described.
HENRY F. BELCHER.
Witnesses:
    HOMER. L. KRAFT,
    BERTHA C. SIMS.