Home Index Site Map Up: Patent Index Navigation
Up: Patent Index
D32,673 · Dobbins · "Design for a Prism-Plate" · Page 1
Home  > Prism Glass  > Patent Index  > Page 1
First: D32,673 · Dobbins · "Design for a Prism-Plate" · Page 1 Last: D32,673 · Dobbins · "Design for a Prism-Plate" · Drawing Prev: D32,673 · Dobbins · "Design for a Prism-Plate" · Drawing Next: D32,673 · Dobbins · "Design for a Prism-Plate" · Drawing Navigation
D32,673: 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: 477 · Moffat & Dobbins · "Improvements in Light-projecting Glasses for Windows and the like" · Page 1 Next: 71590 · Moffat & Dobbins · "Improvements in Light Projecting Glasses" · Page 1 Navigation
Patents: 505 of 530
UNITED STATES PATENT OFFICE.
EDWARD J. DOBBINS, OF NESHAMINY, PENNSYLVANIA, ASSIGNOR TO
THE AMERICAN PRIMATIC LIGHT COMPANY, OF PHILADELPHIA,
PENNSYLVANIA.

DESIGN FOR A PRISM-PLATE.
First: 637,145 · Moffat & Dobbins · "Light-Projecting Glass" · Page 1 Last: D39,666 · Dobbins · "Design for a Prism-Plate" · Drawing Prev: 477 · Moffat & Dobbins · "Improvements in Light-projecting Glasses for Windows and the like" · Page 1 Next: 71590 · Moffat & Dobbins · "Improvements in Light Projecting Glasses" · Page 1 Navigation
Dobbins: 3 of 9

SPECIFICATION forming part of Design No. 32,673, dated May 15, 1900.
Application filed April 11, 1900. Serial No. 12,487. Term of patent 7 years.
To all whom it may concern:
Be it known that I, EDWARD J. DOBBINS, residing at Neshaminy, Bucks county, 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 my new design.
Figure 2 is a sectional elevation of said plate on the line 2—2 of Figure 1.
Figure 3 is a sectional elevation of said plate on the line 3—3 of Figure 1.
As shown in the drawings, the leading or material feature of my design consists in a series of convex projections, a, disposed or arranged upon the side of a plate b.
Each convex projection in form resembles
the segment of an ovoid, the plane face of which segment has been projected in parallelism with the major axis of such ovoid; each is, however, as to one end quite rotund, and, as to the other, tapers to a blunt point.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is—
The design for a prism plate, as herein shown and described.
In testimony that I claim the foregoing as my invention I have hereunto signed my name this 31st day of March, A.D. 1900.
EDWARD J. DOBBINS.
In presence of—
G. A. SCHWAB,
F. NORMAN DINON.