Home Index Site Map Up: Patent Index Navigation
Up: Patent Index
D28,008 · Wright · "Design for a Prism-Plate" · Page 1
Home  > Prism Glass  > Patent Index  > Page 1
First: D28,008 · Wright · "Design for a Prism-Plate" · Page 1 Last: D28,008 · Wright · "Design for a Prism-Plate" · Drawing Prev: D28,008 · Wright · "Design for a Prism-Plate" · Drawing Next: D28,008 · Wright · "Design for a Prism-Plate" · Drawing Navigation
D28,008: 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: D28,007 · Wright · "Design for a Prism-Plate" · Page 1 Next: D28,009 · Wright · "Design for a Prism-Plate" · Page 1 Navigation
Patents: 442 of 511
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.
First: D27,977 · Wright · "Design for a Prism-Light" · Page 1 Last: D28,020 · Wright · "Design for a Prism-Canopy" · Drawing Prev: D28,007 · Wright · "Design for a Prism-Plate" · Page 1 Next: D28,009 · Wright · "Design for a Prism-Plate" · Page 1 Navigation
Frank L. Wright
32 of 41

First: D26,829 · Basquin · "Design for a Prismatic Window-Light" · Page 1 Last: D30,472 · Soper · "Design for a Vault-Light" · Drawing Prev: D28,007 · Wright · "Design for a Prism-Plate" · Page 1 Next: D28,009 · Wright · "Design for a Prism-Plate" · Page 1 Navigation
Luxfer: 75 of 88

SPECIFICATION forming part of Design No. 28,008, dated December 7, 1897.
Application filed October 23, 1897. Serial No. 656,233. Term of patent 14 years.
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 description.
    My invention relates to designs for prism-plates.
    Figure 1 is a plan view of a prism-plate embodying my design. Fig. 2 is a section.
    A is the body of the prism-plate; B B, a series of lines of separation on the face thereof, which divide the face into a series of minor and substantially uniform surface areas C C. D D are prisms on the back of said prism-plate, set at a certain angle, and E E other prisms set at a different angle. These latter prisms are scattered about among the first mentioned, so that the first-mentioned prisms form a sort of field and the latter a set of prism areas in such field of a different angle. When viewed from the prism side, it has the appearance of a field of prisms
of a certain angle with scattered prism areas of a different angle. When viewed from the plain side, the appearance of the prism-surfaces of different angular arrangement is such as to present a field of a given appearance with a series of surface areas scattered through the same having a different appearance.
    The essential features of my design are found in a prism-plate substantially flat and extended, divided on one side into a series of surface areas by lines of separation and provided on the other side with a prism surface or field formed of prisms of a certain angle with a number of prism-surfaces scattered about through the field formed of prisms of a different angle.
    I claim--
    A design for a prism-plate, substantially as shown and described.
FRANK L. WRIGHT.
Witnesses:
    OLIN H. BASQUIN,
    C. A. LONGFELLOW.