USD27996S - Design for a prism-plate - Google Patents
Design for a prism-plate Download PDFInfo
- Publication number
- USD27996S USD27996S US D27996 S USD27996 S US D27996S
- Authority
- US
- United States
- Prior art keywords
- design
- prism
- plate
- surface areas
- wright
- Prior art date
Links
- 238000000926 separation method Methods 0.000 description 2
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Description
DESIGN.
P. L. WRIGHT.
PRISM PLATE.
maxima Witwe/was UNITED STATES PATENT OFFICE.
FRANK L. IVRIGIIT, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.
DESIGN FOR A PRISM-PLATE.
SPECIFICATION forming part of Design No. 27,996, dated December '7, 1897.
Application filed October 21,1897. Serial 110.655,973. Term of patent 14 years.
T0 all whom it 71mg/ concern:
13e it known that l, 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 prismplates.
Figure l 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 side into a series of substantially uniform 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 ornainented center with a surrounding lield.
I claim- A design for a prism-plate, substantially as shown and described.
FRANK L. WRIGHT.
YVitnesses:
C. A. LONGFELLOW, FRANCIS W. PARKER.
Family
ID=
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