Note: Descriptions are shown in the official language in which they were submitted.
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This invention relates to a window having one face
ornamentally divided into a plurality of lites by a channelled
came secured thereto with an adhesive contained in the channel.
More particularly, it relates to such a window wherein some of the
lites are ornamented such as by being formed with a ground bevel-
led edge or as by having an ornamentally roughened surface or as
by having a unique colouring. It also relates to a method for
making such windows.
In Canadian Patent 1,072,329 to Frank Elmer Drennan there
is described a window of this general class. In that window the
face is ornamentally divided into a plurality of lites by a chan-
nelled came. The individual lites are ornamented by etching or
colouring the pane of glass before the came is applied. The window
described in that patent has achieved its objectives of providing
a weatherproof lead came ornamented window but the window surface
being essentially one piece of flat glass it was not possible to
achieve a confi~uration wherein indiyidual lites are bevelled at
their edges as it is with a conventional lead came window wherein
the individual lites are each separately cut and pieced together
by a lead came.
There is a demand for the bevelled li~e lead came effect
-' and it has been filled, in the case of a weatherproof window, by
making a bevelled lite lead came window by the conventional piec-
` ing method and mounting it between two sealed window panes. This
procedure has been resorted to because the conventional leaded win-
dow pieced together by lead came is not weatherproof enough for
present day requirements. It is costly and does not give the full
affect of traditional leaded window because one looks at the lead
came through another piece of glass.
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It is an object of this invention to achieve the bevelled
and other artistic effects in a leaded window that is weatherproof,
serviceable and economical to build.
; With these and other objects in view, a window according
- to this invention comprises a base pane; a channelled came; adhe-
sive in the channelled came adhesively securing the came to the
pane whereby the came ornamentally divides the face of the window
into a plurality of lites; at least one of the lites being formed
from said base pane and a decorative pane in the configuration of
one of said plurality of lites laminated thereto; one edge of said
came overlying the marginal area of the upper face of said decora-
tive pane.
A method of making a glass or like window wherein one
face is ornamentally divided into a plurality of lites by channel-
led came secured thereto with adhesive contained in the channel
according to this invention comprises the steps of forming splines
on a table surface in the configuration of said plurality of lites;
piecing channelled lead came over said splines, the splines enter-
ing the channels; joining said came at intersections of said pieces;
20 pressing said came against said surface to straighten the edges of
the channel of the came against the table surface; transferring the
came with its edges so straightened from said splines; depositing
an adhesive in the channel of the came; and pressing a sheet of
glass against the came to adhesively secure the came to the glass.
The invention will be clearly understood after reference
to the following detailed specification read in conjunction with
the drawings.
In the drawings:
- Figure 1 is an illustration of a lead came ornamental
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window;
Figure 2 is an illustration of splines formed on a table
in the configuration of the came for the ornamental window;
Figure 3 is an illustration of the table of Figure 2 with
lead came formed over the splines;
Figure 4 is an illustration along the line 4-4 of Fiyure
3;
Figure 5 is an illustration similar to Figure 4, but show-
ing the step of pressing the came against the table to straighten
the edges thereof;
Figure 6 is an illustration of a jig for retaining the
came that has been formed on the table of Figure 2 as it is united
with a pane of glass;
Figure 7 is an illustration along the line 7-7 of Figure
6, but with the came located therein;
Figure 8 is an illustration similar to Figure 7 but along
the line 8-8 of the jig of Figure 6; ~
Figure 9 is an illustration of a window with a bevelled
diamond shaped piece of glass laminated to the base pane;
Figure 10 is an illustration along the line 10-10 of
Figure 9;
Figure 11 is an illustration showing the laminated window
in the area of the diamond overlay as it is applied to the came in
the jig; and
Figure 12 is an illustration of a final pressing opera-
tion.
In the drawings, the numeral 10 generally refers to a
r glass window, one face of which ls ornamentally divided into a
plurality of lites by lead came generally indicated in Figure 1
by the numeral 12. The window illustrated is a sealed unit made
up of two spaced apart sheets of glass 14 and 16 spaced and sealed
at their edges by spacers. Windows made in this fashion are com-
monly used because of their heat insulation characteristics. This
invention is not limited to the ornamenting of such windows with
a lead came configuration. It can also be used with advantage on
a single sheet of glass. However, it is of special use with the
double pane insulated construction because it is not possible to
provide an ornamented lead came window of good appearance that has
good insulating characteristics with the conventional lead came
method.
In Patent 1,072,329 the general concept of ornamenting
- a window with lead came wherein the came is adhesively secured to
a sheet of glass was disclosed. The important aspect of that dis-
closure was the provision of a channelled lead came member that
had inwardly directed flanges that could mechanically interlock
with the adhesive and provide a lasting securement of the came to
the glass. That concept has proven itself to be successful in
practice. With it one can achieve ornamental effects by making
different ones of the lites defined by the came of different colour.
There have been limitations, however. One of the beauties
of a conventional lead came window is that individual lites de-
fined by the came can be made of different thickness to adjacent
lites and can also be made with a ground bevelled edge. Such
effects have not been possible with the method described in
Patent 1,072,329 because in the case of that patent the came was
applied directly to a sinyle sheet of glass and all lites defined
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by the came had the thickness of the single sheet.
This invention overcomes the previous limitation of
leaded windows that were inheren-t in the invention disclosed in
Patent 1,072,329 and substantially extends the artistic effects
that can be achieved with this method of construction. It makes
it possible, for example, to provide a window that is weatherproof
with lites that have ground bevelled edges or that have a sp~cial
surface texture or colour not possible to produce on a single pane
of glass with the method described in Patent 1,072,329. The
leaded ornamental window illustrated in the drawing has as its
base sheet of glass one of the two sheets of glass that make up
- the window unit 10. An ornamental overlay sheet of glass 18 is
laminated to the sheet 14 and a lead came 30 is bonded to the base
sheet with its edges extending over the marginal portions of the
ornamental bevell on the overlay 18 and over the base sheet 14.
The ornamental overlay 18 has its edges bevelled by a glass grind-
ing process and is adhesively secured at its edges to the sheet
,; 14 by means of a peripherally extending bead of waterproof adhe-
sive 22 such as a quick drying epoxy. Once thus secured one can-
not discern the laminated nature of the assembly. The glass ap-
pears to be a single piece of glass and the adhesive seals the
space between the two glass surfaces.
The came is secured to the glass with a polysulphide ad-
hesive that is contained within the channel thereof and that is,
when set, mechanically interlocked with the came at the inwardly
directed flanges at the edges of the came. This particular kind
of union as explained in Patent 1,072,329 is a permanent one cap-
able of withstanding weather. It will be noted that the polysul-
phide overlays the epoxy to ensure a good weather seal.
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Preferably the pane of glass is formed with a ribbon
paint overlay that is silk screened and oven baked as indicated
at numeral 24 on Figure 10 in the pattern of the came on the oppo-
site side to the side that the came is applied for the purpose of -
hiding the adhesive when the window is viewed from the opposite
side to the side of the came. This ribbon is substantially the
same colour as the came and has a pleasing visual effect.
In result, the window of Figure 1 is a leaded came win-
dow, one lite of which appears to be a diamond configuration with
its side edges bevelled, an effect which was only achievable prior
to this invention by separately forming the individual lites and
securing them together by means of an H-shaped came.
While a diamond shaped lite with its edges bevelled has
been illustrated in the drawings, it is not intended that the in-
vention should be limited to such a design. One could, for example,
form the particular lite with a glass lamination of any desired
special artistic characteristics in respect of colour, finish, etc.
In order to make the window illustrated in Figure 1 one
first assembles an insulated plain glass unit that consists of
the panes 14 and 16 and the spacer element between them. It is
- usual to provide a moisture absorbing substance between the panes
that dries the air between them. The general construction of these
units is well known and not part of this invention. As noted
above, the pane 14 has deposited thereon a strip of paint material
24 in the configuration of the lead came of the finished window
so that the underside of the lead came will not be visible when
one looks through the pane 16 of the window. This deposit is made
before the window is assembled.
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The next step in the process is to mount a spline 26
in a channel of a table surface 28 in the configuration of the
lead came of the finished window. The cross-section of the spline
is seen in Figure 4. It is preferably made from a hard plastics
material and is fitted into a channel in the table to provide an
upstanding spline over which the channelled came 30 can be placed.
Came 30 is made of came lead alloy by an extrusion pro-
cess and lengths of the came are pieced together over the entire
spline 26. The joints in the pieces of came are soldered as at 32.
The area of the table within the diamond that will even-
tually be occupied by the ground bevelled piece of glass 18 has
an insert 34 mounted therein which is designed to raise the mar-
ginal portions thereof above the general level of the table by an
amount substantially equal to the increased thickness of the fin-
ished window caused by the laminated configuration l9.
After the came has been fitted to the spline and the
joints have been soldered the came is pressed against the table
by means of a press generally indicated by the numeral 36 to
straighten the edges of the came against the table surface.
Figure 4 is an illustration of a general nature showing
the disposition of the inwardly directed flanges of the came in
relation to the table surface. It will be noted that they are not
flat against the table. Moreover, the elevation of the flanges
from the edge of the table varies along the length of the came.
It is desirable to straighten these edges after the mounting and
soldering operation and the press 36 is for this purpose. It will
be noted iII Figure 5 that the edges of the inwardly directed flanges
on the came are against the table surface and they are substantially
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in this disposition for -the full extent of the came; the edges of
the channels have been straightened. The resilience of the pad 36
is adapted to accommodate the height of the came above the table
surface and ~o straighten the edges without unduly deforming or
marking the came.
In use, a rubber pad having a thickness of about 5/8 inch
and a durometer softness of about 60 has worked very well with a
lead came having a width of about 5/16 of an inch at its base and
a height of about l/8 of an inch.
After the came has been straightened on the table top 28
it is removed and adhesive is deposited into the channel of the
came and the glass window is pressed against the came to adhesively
secure the came to the glass. This operation is facilitated by
means of the table 40 that is cut with channels 42 to receive the
came. Figure 7 is a cross-sectional illustration along the line
7-7 of Figure 6 and shows the disposition of the came at the diamond
section. Figure 8 is an illustration along the line 8-8 and shows
the disposition of the came at the line 8-8. It will be recalled
that in the pressing operation the area at the location of Figure
8 was not raised on either side of the came in Figure 3 so that
both sides of the channel at the section 8-8 are of the same height.
The numeral 44 is an indication of a bead of adhesive
which is applied along the length of the ca~e on the table 40.
This adhesive is a polysulphide of known characteristics suitable
for adhering the came to the glass.
The glass window pane 14 with the diamond section 18
laminated thereto is then applied to the came with the overlay 24
thereon aligned with the came as indicated in Figure ll and lightly
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pressed against the adhesive. It will be noted that the table 40
is formed with a depression to accommodate the diamond shaped
lamination 18.
The window lO is then removed from the table 40 together
with the came which has been adhered thereto and placed with the
came in an upward position in the press following which the press
platen is caused to decend thereon to complete the levelling of
the edges of the came with the surface of the window and secure
the assembly in final position for complete setting of the adhesive
as shown in Figure 12. The press is the same used to straighten
the came in Figure 5, but in this latter operation the pressure
required to press the adhesive is very much less than that to
straighten the came.
The adhesive 44 cures in a period of about five hours
after pressing following which the unit can be cleaned to remove
excess polysulphide squeezed in the pressing operation to render
the unit ready for use.
;- Embodiments of the invention other than the one illus
trated will be apparent to those skilled in the art.
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