Home Index Site Map Up: Patent Index Navigation
Up: Patent Index
D27,347 · Ewen · "Design for a Prism-Plate" · Page 1
Home  > Prism Glass  > Patent Index  > Page 1
First: D27,347 · Ewen · "Design for a Prism-Plate" · Page 1 Last: D27,347 · Ewen · "Design for a Prism-Plate" · Drawing Prev: D27,347 · Ewen · "Design for a Prism-Plate" · Drawing Next: D27,347 · Ewen · "Design for a Prism-Plate" · Drawing Navigation
D27,347: 1 of 2

First: 232 · Wyndus · "Glasses and Lamps for Ships, Mines, &c" · Page 1 Last: 397,371 · Deutsche Glasbau-Gesellschaft · "Improvements in Moulds for use in the Construction of Floor Slabs, Wall Panels, Pavement Lights, Windows and the like of Glass Framed in Ferroconcrete" · Drawing Prev: D27,346 · Ewen · "Design for a Prism-Plate" · Page 1 Next: D27,348 · Winslow · "Design for a Prism-Plate" · Page 1 Navigation
Patents: 334 of 511
UNITED STATES PATENT OFFICE
JOHN M. EWEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO
THE LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DESIGN FOR A PRISM-PLATE.
First: 583,594 · Ewen · "Prismatic Light" · Page 1 Last: D28,019 · Ewen · "Design for a Prism Pavement-Panel" · Drawing Prev: D27,346 · Ewen · "Design for a Prism-Plate" · Page 1 Next: 16,540 · Ewen · "Framing Window Prism Lights by Under-cutting the Corners and Depositing Metal therein" · Page 1 Navigation
John M. Ewen
11 of 21

First: D26,829 · Basquin · "Design for a Prismatic Window-Light" · Page 1 Last: D30,472 · Soper · "Design for a Vault-Light" · Drawing Prev: D27,346 · Ewen · "Design for a Prism-Plate" · Page 1 Next: D27,348 · Winslow · "Design for a Prism-Plate" · Page 1 Navigation
Luxfer: 27 of 88

SPECIFICATION forming part of Design No. 27,347, dated July 13, 1897.
Application filed June 15, 1897. Serial No. 640,939. Term of patent 14 years.
To all whom it may concern:
    Be it known that I, JOHN M. EWEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented and produced a new and original Ornamental Design for Prism-Plates, of which the following is a specification.
    My invention relates to a design for prism-plates, and is illustrated in the accompanying drawing, showing a prism-plate containing my design.
    A is the central body, substantially circular in cross-section, or at least bounded by curved lines. B B are prisms thereon.
    C is one of the triangular corner-pieces, the side opposed to the central part being curved to correspond with the curvature of the central part.
D D are the prisms on such corner-pieces.
    The five parts constitute substantially a square or rectangular piece.
    The essential features of my design are found in a prism-light consisting of a central prism-covered surface bounded by curved lines and four prism-covered surfaces bounded each by an inner curved line and by outer right lines, substantially as shown.
    I claim--
    The design for a prism-plate substantially as shown and described.
JOHN M. EWEN.
Witnesses:
    DONALD M. CARTER,
    HOMER L. KRAFT