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Patents: 328 of 511
UNITED STATES PATENT OFFICE.
JAMES G. PENNYCUICK, OF TORONTO, CANADA.

DESIGN FOR A PRISM-PLATE.
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James G. Pennycuick
10 of 12

SPECIFICATION forming part of Design No. 27,341, dated July 13, 1897.
Application filed June 15, 1897. Serial No. 640,928. 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-Plates, of which the following is a description.
    My invention is related to a design for prism-plates.
    It is illustrated in the accompanying drawings, wherein--
    Figure 1 is an elevation of a prism-plate, looking towards the prism side. Fig. 2 is a section therethrough.
    Like parts are indicated by the same letter in all the figures.
    A is a surrounding frame; B B and C C, the parts which form the inner net, grid or frame.
    The prism-lights D D are composed each of a body with prisms E E thereon. There prism-lights are substantially square or rectangular, and the prisms are arranged thereon substantially as indicated, being practically horizontal to the transverse or horizontal axes of the prism-light.
    I have shown a certain size and arrangement of the several parts and of the prisms of on the light; but the essential feature of my invention is a single complete plate composed of prism-lights with diagonally-arranged inner frame-pieces, the prisms placed horizontally.
    I claim--
    The design for a prism-plate substantially as shown and described.
JAMES G. PENNYCUICK.
Witnesses:
    LOUIE HARDING,
    F. N. BARRETT.