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D27,996 · Wright · "Design for a Prism-Plate" · Page 1 Home > Prism Glass > Patent Index > Page 1 |
D27,996: 1 of 2 |
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Patents: 430 of 530 |
UNITED STATES PATENT OFFICE
FRANK L. WRIGHT, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE. DESIGN FOR A PRISM-PLATE. |
Frank L. Wright 20 of 41 Luxfer: 63 of 88 |
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SPECIFICATION forming part of Design No. 27,996, dated December 7, 1897. Application filed October 21, 1897. Serial No. 655,973. Term of patent 14 years. | ||
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To all whom it may concern: Be it known that I, FRANK L. WRIGHT, 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-Plates, of which the following is a description. My invention relates to designs for prism-plates. Figure 1 is a plan view of a prism-plate embodying my design. Fig. 2 is a cross-section therethrough on line 2 2. A is the body of the plate; B B, a series of surface areas thereon formed by the lines of separation C C. The surface areas are substantially uniform. D D are lines produced upon such surface areas, so as to form on a group of central surface areas a central design, as is shown. |
The essential features of my design are found
in a prism-plate comprising a substantially flat extended body with
prisms on one side and lines of separation on the other which divide
such surface areas and a pattern produced upon a group of such surface
areas near the center of the plate, so as to give the appearance of
an ornamented center with a surrounding field. I claim-- A design for a prism-plate, substantially as shown and described.
Witnesses: |