Combined Prism and Chipped Glass for Windows.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 28th Aug., 1897
COMPLETE SPECIFICATION.
Combined Prism and Chipped Glass for Windows.
I, JOIN 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 per-
formed, to be particularly described and ascertained in and by the following
statement: —
My invention relates to ornamental prism lights and the process of forming
the same and has for its object to provide new and improved prism lights.
My invention is illustrated as far as it is practicable to illustrate it in the
accompanying drawings, wherein
Figure 1 shows a prism light provided with ornamentation produced by my
process.
Figure 2 is a section on Line 2-2 Figure 1.
Figure 3 shows a prism light before the process of ornamentation has been
completed.
Figure 4 is a section on Line 44, Figure 3.
Figures 5 and 6 show Figure 3 after completion.
Figures 7 and 8 are views of a prism light provided with a more complicated
design than is shown in Figures 1, 2, 3 and 5.
Figure 9 is a view of a prism plate.
Like letters refer to like parts throughout the several figures.
I have illustrated my invention as applied to the ordinary prism lights. I
take a prism light A provided with a projectile prism B on which I desire to
form for example the ornamental chipped glass figure or outline C, C¹, C³, the
figure or design intended to be produced is formed by cutting out so much of the
prisms as will result in establishing the outline of the desired form of design
and this having been done the cutting or breaking out of the prism will be found
to have left a chipped surface on the prism side of the prism plate. If desired
the outline of such design may be first formed as indicated in Figure 3 at D D
and the intermediate portions of the prisms may then be broken or chipped out so as
to produce the complete chipped design of Figure 5 indicated at E. In like manner,
a more complex design such as that of Figure 7 indicated at F and G may be
produced. The chipped effect and the design produced thereby is visible from
either side of the prism light. The effect of such design is heightened by the
brilliancy of the surrounding prism surfaces. The forming of the outline and
the breaking out of the prism sections may be accomplished in any desirable
manner. I do not pretend to have shown more than a sort of diagram to illus-
trate my invention, as it will be plain that it can be realized in many and various
forms and by different means without departing from the spirit of my invention.
It is plain that in building up prism lights in a prism plate the same general
results can be accomplished by having some prism lights with the chipped

page_text: surfaces and others without it or by associating chipped with the prism lights
in a complete plate for the window or opening This I have illustrated in Figure 9
where H H are corner prism lights without prism surfaces. J J are prism lights
having chipped surfaces J', and K is central light having its entire surface of
chipped glass. These several lights may be of any size, of course, as the con-
venience of the manufacturer may determine and may all be built up together to
form a desired plate.
I have used the term prism and prism light and prism plate. By these terms
I wish to be understood as indicating prisms systemmatically arranged so as to
produce the effect of greater illumination in the room in which they are placed
as distinguished from mere irregularly interrupted surfaces.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
An ornamental light for windows consisting of a prism-covered body with
portions of said prisms broken away to form a chipped surface, the whole con-
sisting either of small sections united or of a single plate or sheet.
Dated this 13th day of July 1897.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.