USD27991S - Design for a prism-plate - Google Patents

Description

DESIGN.

P. L. WRIGHT. PRISM PLATE. No. 27,991.

Patented Dec. 7, 1897.

UNITED STATES PATENT OFFICE.

FRANK L. \VRIGHT, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-PLATE.

SPECIFICATION forming part of Design No. 27,991, dated December '7, 1897.

Application filed October 2, 1897- Serial No. 653.865. Term of patent 14 years.

To all whom it may concern.-

Be it known that I, FRANK L. \VRIGHT, 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 prismplates, and isillustrated in the accompanying drawings, wherein- Figure 1 is a View of the prism-plate embodyingmy design. Fig. 2 is a section therethrongh on line 2.

A is a prism-plate having the upper portions B B surrounded by curved lines C C. On one side of the prisnrplate are prisms D.

The essen tial features of my design may be found in a. prism-plate consisting of a substantially fiat 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.

FRANK L. WRIGHT. \Vitnesses:

DONALD M. CARTER, HOMER L. KRAFT.

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