Ornamental Prism Plates for Windows.
Year: 1897

page_text: Date of Application, 7th Dec., 1897-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Ornamental Prism Plates for Windows.
I, JOHN MEIGGS EWEN, of No. 1129, The Rookery, Chicago, County of Cook, State
of Illinois, United States of America, Mechanical Engineer, do hereby declare the
nature of my invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:.
--
My.invention relates to prism lights and has for its object to provide a new and
improved prism light of which the following is a description, reference being had to
the accompanying drawings, wherein
Figure 1 is a view of a prism light embodying my invention;
Figure 2 is a section on line 2-2, Figure 1;
Figure 3 is a view showing a modified form of design;
Figure 4 is a section on line 4-4, Figure 3;
Figure 5 shows a further modified design;
Figure 6 is a section on line 6-6, Figure 5;
Like letters refer to like parts throughout the several figures.
As illustrated in Figure 1, I have shown a prism light A formed of a single piece
of material and provided with the prisms B and C. The prisms B are smaller and
are separated by smaller spaces than the prisms C and are systematically arranged so
as to produce a design on the prism light as shown.
In Figures 3 to 6, I have shown simple designs differing from the design shown in
Figure 1. In all these figures it will be noted that the design is formed on a prism
light wherein the prisms are all integral with the light, so that there is only a single
piece, the design being due to prisms of various size or angles.
I have only attempted to show simple designs to which my invention is applied,
so that its application may be readily understood, and it is of course evident that
designs of any suitable description may be formed in this manner upon the prism
lights, the prisms being utilized to distribute the light or direct it in any desired
direction. The prism lights may be molded or rolled or formed in any desired
manner and I do not limit myself in any manner to the description herewith
presented. The prism lights formed in accordance with my invention may be com-
bined into a prism plate in the ordinary manner and only a portion of the design
may be formed on any given prism light, if desired, the entire design being produced
only when the prism lights are bound together. The prisms in this case are
systematically arranged so as to produce an increased illuminating effect when they
are placed in the aperture through which the light is admitted, and the prisms may
be of different sizes or angles or both.
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page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
A prism light having two or more varieties of prisms, substantially as shown and
described, arranged so as to form designs such as shown or others.
Dated this 7th day of December 1897.
Dated this th day of December 1837.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.