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Patents: 327 of 511
UNITED STATES PATENT OFFICE.
JAMES G. PENNYCUICK, OF TORONTO, CANADA.

DESIGN FOR A PRISM-LIGHT.
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James G. Pennycuick
9 of 12

SPECIFICATION forming part of Design No. 27,340, dated July 13, 1897.
Application filed June 15, 1897. Serial No. 640,927. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, JAMES G. PENNYCUICK, citizen of the Dominion of Canada, residing at Toronto, in the county of York and Province of Ontario, Canada, have invented and produced a certain new and useful Design for Prism-Lights, of which the following is a description.
    My invention related to a design for prism-lights.
    It is illustrated in the accompanying drawing, wherein--
    Figure 1 shows a perspective view of a prism-light containing my design. Fig. 2 is a cross-section.
    Like parts are indicated by the same letter in all the figures.
    A is the body of the prism having the plain
side B and the prism side C, with the prisms D D arranged thereon substantially parallel to the hypotenuse of the triangle. The prisms are shown as of certain sizes, angles, and numbers; but the essential feature of my invention, however, is a triangular prism-light having a practically smooth surface on one side with a prism-surface on the other side, said prisms being substantially parallel to the hypotenuse of the triangle.
    I claim--
    The design for a prism-light substantially as shown and described.
    In testimony whereof I affix my signature, in the presence of two witnesses, this 22d day of April, 1896.
JAMES G. PENNYCUICK.
Witnesses:
    LOUIE HARDING,
    F. N. BARRETT.