Home Index Site Map Up: Patent Index Navigation
Up: Patent Index
D30,471 · Lubin & Dryfoos · "Design for a Prism-Plate" · Page 1
Home  > Prism Glass  > Patent Index  > Page 1
First: D30,471 · Lubin & Dryfoos · "Design for a Prism-Plate" · Page 1 Last: D30,471 · Lubin & Dryfoos · "Design for a Prism-Plate" · Drawing Prev: D30,471 · Lubin & Dryfoos · "Design for a Prism-Plate" · Drawing Next: D30,471 · Lubin & Dryfoos · "Design for a Prism-Plate" · Drawing Navigation
D30,471: 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: 622,506 · Manning · "Illuminating Window-Glass" · Page 1 Next: D30,472 · Soper · "Design for a Vault-Light" · Page 1 Navigation
Patents: 486 of 511
UNITED STATES PATENT OFFICE
SIEGMUND LUBIN AND SOLOMON DRYFOOS, PHILADELPHIA, PENNSYLVANIA.

DESIGN FOR A PRISM-PLATE.
 

SPECIFICATION forming part of Design No. 30,471, dated April 4, 1899.
Application filed February 21, 1899. Serial No. 706,418. Term of patent 7 years.
To all whom it may concern:
    Be it known that we, SIEGMUND LUBIN and SOLOMON DRYFOOS, residing in the city of Philadelphia, State of Pennsylvania, have invented and produced a new and original design for Prism-Plates, of which the following is a specification.
    Figure 1 is a plan view of a prism-plate embodying our new design. Fig. 2 is a sectional view taken on the line A A of Fig. 1. Fig. 3 is an end elevation at right angles to the line A A.
    As shown in the drawings, the leading or material feature of our design consists of a series of parallel cylindrical concavities 1,
disposed or arranged upon one side of the plate, as shown in Figs. 1 and 2, while the opposite side of the plate comprises a series of parallel prismatic ribs 2, as shown.
    Having described our invention, what we claim as new, and desire to secure by Letters Patent, is—
    The design for a prism-plate, as herein shown and described.
SIEGMUND LUBIN.
SOLOMON DRYFOOS.
Witnesses:
    CHAS. P. ROONEY,
    FRANK J. BRADY.