Improvements in Windows and Glazed Gratings.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 4th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in Windows and Glazed Gratings.
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 per-
formed, to be particularly described and ascertained in and by the following
statement:
means
Prism
Plates
where
My Invention relates to prism plates, and has for its object to
for building up
provide
the separate
prism lights, or some of them, are to be, themselves compound, or made of sections.
It is equally applicable to cases where some of the lights are other than prism
lights and where lights, other than prismatic, are to be incorporated with a series
of prism lights to make a compound plate. It is illustrated in the accompanying
drawings, wherein Fig. 1, is an elevation of a prism plate having a central com-
pound light. Fig. 2 is a view of such compound light detached. Fig. 3 is a
section of Fig. 1 on the line 3-3. Like parts are indicated by the same letter
in all the figures. A is a surrounding sash; B B are lights, prismatic or other-
wise; CC are middle lights, preferably prismatic; D is a small central. piece,
surrounded by the side-pieces EE; these several parts are united by the central
binding strip F, with a diagonal, or radiating, strip, G G; H H are the warps,
being thin metal strips from sash to sash, and JJ are the ties, which, together,
form a net or light frame to hold the several lights. I prefer to bring all these
parts together in the manner indicated, and then to electroglaze the parts together
so as to form, a complete sheet or plate, in which the several members or lights
may be any desired size or shape, though I have shown them as of uniform size
and shape. This is the preferred form of my invention. In some cases it is
desirable to incorporate lights of different form, or lights made up of a series of
sections or pieces, but for various reasons, it is desirable that such light, so made
up of sections or pieces should, when completed, approximate as nearly as possible
the shape, the size and the condition of the other lights.
This is especially
desirable when we consider the matter of uniting all together.
To illustrate, I may say that, in the electroglazing process, and when it is
desirable to unite the several lights by a very light net work or frame, it is highly
desirable that the outer edge of each of the lights shall be free from any metal or
binding. This of course, applies to certain conditions and cases.
The complex
light, then, should be so formed as to present a surrounding margin, or edge, of
glass, instead of metal. In other words, the parts should be brought together and
supported by a frame, which lies, substantially, wholly within the outer boundary
of the glass sections. This, it will be observed, is accomplished in the form of
construction which I have here shown, though, of course, I have not endeavoured
to show all forms but only to show a single one as illustrative of my device and
explanatory of my invention.
The single or central light consists of several sections grouped about a central
section, which is, itself, provided with a surrounding metal rim, the remainder

page_text: of the frame consisting of radiating metalic arms or strips attached to the central
rim.
Briefly speaking, the complex light is composed of sectious and a frame, the
frame being strengthened by a central rim, or continuous piece, rather than by
an exterior rim, or continuous piece, which would, perhaps, be the ordinary
method of constructing such a complex light or bringing together such a series of
pieces. When these lights are all brought together to be electroglazed into the
frame or net to make a complete plate, it is evident that the thickness of the warps
and ties will be uniform and the opaque rim separating the several lights will
be of equal diameter.
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:
1. A window light comprising a series of lights, some of said lights consist-
ing of a series of sections grouped around a central section, the central section
framed, and arms radiating from said frame between the outer sections, the whole
united together so as to form a complex light with a non-metallic border, and a
frame or net whose members are interposed between the opposed edges of the
several lights and means whereby the frame of lights are tightly secured together
so as to form a complete window plate.
A prism plate comprising a series of prism lights and some complex nights,
such complex lights composed of a series of sections and a supporting frame,
united together so that the complex light presents an exterior non-metallic edge,
and a frame or net in which all such lights are placed, and whereby they are
secured together to form a complete plate.
3. A prism plate comprising a series of prism lights and some complex lights,
such complex lights composed of a series of sections and a supporting frame,
united together so that the complex light presents an exterior non-metallic edge,
and a frame or net in which all such lights are placed, and whereby they are
secured together to form a complete plate, the whole being submitted to the
electroglazing process to deposit on the entire metallic frame, and thus secure
the sections of the complex light to their frame, and secure all the lights to the
principal frame so as to form a window light.
Dated this 13th day of July 1807