USD27997S - Design for a prism-plate - Google Patents

Description

EX 09075 0R 0 27.997

DESIGN.

F. L. WRIGHT. PRISM PLATE. No. 27,997. Patented Dec. 7, 1897.

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.

SPECIFICATION forming part of Design N0. 27,997, dated December '7, 1897.

Application filed October 23, 1897. Serial No. 856,224- Term of patent 14 years.

To all whom it may concern:

Be it known that I, FRANK L. VVRIGH'I, a citizen of the United States, residing at Cilicago, 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 prismplates.

Figure 1 is a plan View of a prism-plate embodying my design. Fig. 2 is a section there through.

A is the body of the prism-plate.

B I3 are a series of surface areas, substantially uniform in appearance and produced by the lines of separation C C, which cross the surface of the body of the plate. D D are prisms on the opposite side.

Upon the surface of the prism-plate and intermediate between its center and outer edge a group of areas forming a hollow square are ornamented by means of the lines E E. These lines are produced on the surface of the prism-plate.

The essential features of my design are found in a prism-plate consisting of a substantially flat body with a series of prisms on one side and lines of separation on the other which divide the surface into a series of substantially uniform surface areas and a hollow square formed on the surface intermediate between the center and the outer edge by means of lines of ornamentation.

I claim- A design for a prism-plate, substantially as shown and described.

FRANK L. \VRIGII'I.

\Vitnesses:

OLIN II. BASQUIN, FRANCIS W. PARKER.

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