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D27,991 · Wright · "Design for a Prism-Plate" · Page 1 Home > Prism Glass > Patent Index > Page 1 |
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Up: Patent Index |
D27,991 · Wright · "Design for a Prism-Plate" · Page 1 Home > Prism Glass > Patent Index > Page 1 |
D27,991: 1 of 2 |
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Patents: 425 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 15 of 41 Luxfer: 58 of 88 |
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SPECIFICATION forming part of Design No. 27,991, dated December 7, 1897. Application filed October 2, 1897. Serial No. 653,865. 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 specification. My invention relates to designs for prism-plates, and is illustrated in the accompanying drawings, wherein-- Figure 1 is a view of the prism-plate embodying my design. Fig. 2 is a section therethrough on line 2. A is a prism-plate having the upper portions |
B B surrounded by curved lines C C. One one side of the prism-plate are
prisms D. The essential features of my design may be found in a prism-plate consisting of a substantially flat body with prisms on one side and the two parts B B bounded by curved lines. I claim-- A design for a prism-plate substantially as shown and described.
Witnesses: |