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D27,679 · Ewen · "Design for a Prism-Light" · Page 1
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D27,679: 1 of 2

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Patents: 376 of 511
UNITED STATES PATENT OFFICE
JOHN MEIGGS EWEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO
THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-LIGHT.
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John M. Ewen
15 of 21

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Luxfer: 31 of 88

Specification forming part of Design No. 27,679, dated September 21, 1897.
Application filed August 5, 1897. Serial No. 647,267. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, JOHN MEIGGS EWEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented and produced a new and original Ornamental Design for Prism-Lights, of which the following is a specification.
    My invention relates to designs for prism-lights. It is illustrated in the accompanying drawings, wherein--
    Figure 1 is a perspective view of a prism-light embodying my invention. Fig. 2 is a section therethrough.
    Like letters refer to like parts in the two figures.
    The body A of the prism-light, which is of transparent material, is provided with two substantially straight edges B and the edge C, which is in the form of a compound curve.
A series of prisms D is placed on one side of the prism-light, the other side being substantially plain or smooth. It is of course evident that the prisms may be placed on either side of the light, if desired.
    I have shown certain angles, arrangements, and numbers of the prisms, but the essential feature of my invention is a body of glass having two substantially straight edges joined by an edge in the form of a compound curve, the glass being provided on one side with a series of prisms.
    I claim--
    A design for a prism-light as herein shown and described.
JOHN MEIGGS EWEN.
Witnesses:
    DONALD M. CARTER,
    HOMER L. KRAFT