USD27342S - Design for a prism-plate - Google Patents
Design for a prism-plate Download PDFInfo
- Publication number
- USD27342S USD27342S US D27342 S USD27342 S US D27342S
- Authority
- US
- United States
- Prior art keywords
- prism
- design
- plate
- prisms
- glass
- Prior art date
Links
- 239000011521 glass Substances 0.000 description 8
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Description
D E 8 10 N.
J. G. PENNYGUIGK.
PRISM PLATE.
No. 27,342. Patented July 13, 1897.
UNITED STATES PATENT OFFICE.
JAMES G. PENNYCUIOK, OF TORONTO, CANADA.
DESIGN FOR A PRISM-PLATE.
SPECIFICATION forming part of Design No. 27,342, dated July 13, 1897.
A li ti fil d June 15, 1897. Serial No. 640,929 Term of patent 14 years.
To all whom, it may concern.-
Be it known that I, JAMES G. IENNYCUIUK, a citizen of the Dominion of Canada, residing at Toronto, in the county of York and Province of Ontario, Canada, have invented and produced a certain new and useful Design for Prism-Plates, of which the following is a description.
My invention relates to designs for prismplates.
It is illustrated in the accompanying drawings, wl1erein Figure 1 is a perspective view of my improved design. Fig. 9 is a section there through.
Like parts are indicated by the same letter in both the figures.
A is a body of glass; B ll, a series of prisms thereon. The body of glass has a substantially plain or smooth surface on one side, with a series of prisms on the other side. The body of glass is triangular approximately in the shape of a right-angle triangle, and the prisms are arranged substantially vertical to the hypotenuse.
I have shown certain angles, arrangements, and numbers of the prisms; but the essential feature of my invention is a triangular body of glass with one practically smooth side and one prism side, the prisms arranged vertically to the hypotenuse.
I claim-- The design for a prism-plate substantially as shown and described.
JAMES G. PENNYCUICK.
Witnesses:
LOUIE IIARDING, F. N. BARRETT.
Family
ID=
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