Framing Window Prism Plates and the like by Inter-locking Corner Pieces.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 28th Aug., 1897
COMPLETE SPECIFICATION.
Framing Window Prism Plates and the like by Inter-locking Corner
Pieces.
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:
My invention relates to framing prism lights, tiles or the like, and has for its
object to provide new and improved frame by means of which said prism lights,
tiles or the like may be firmly secured together.
My invention is illustrated in the accompanying drawings, wherein
Figure 1 is a view of a prism plate embodying my invention;
Figure 2 is a view similar to that shown in Figure 1, after the joints in the
connecting pieces of the frame have been soldered together;
Figure 3 is a view showing the separated ends of the connecting pieces of the
frame;
Figure 4 is a similar view with the ends of the connecting pieces connected
together;
Figure 5 is a sectional view showing the parts in the relation indicated in
Figure 4;
Figure 6 is a view similar to Figure 5 after the connecting pieces have received
a blow, showing the parts riveted together;
Figure 7 is a view similar to Figure 5, showing a
'construction;
somewhat modified
Figure 8 is an enlarged view similar to Figure 6 after the joint has been
soldered;
Figure 9 is a view similar to Figure 3, showing a modified construction of the
ends of the connecting pieces;
Figure 10 shows a further modification;
Figure 11 is a perspective view showing the joint after completion.
Like letters refer to like parts in the several figures.
I have illustrated my invention in connection with the framing of prism lights.
As shown in Figure 1, a series of prism lights A A are formed into a prism plate,
and are separated by the warps C and the cross-pieces D, preferably made of com-
paratively thin metal. The warps C extend the length of the plate, and the cross-
pieces D are inserted between said warps, and are provided at their ends with the
Jugs or enlarged portions D', which engage the corners of the prism lights, and by
which the several cross-pieces are connected together. Figure 1 shows the prism
plate before the joints between the connecting pieces are soldered, and Figure 2
C pass
shows the prism plate after the joints have been soldered. The warps
between the lugs or enlarged parts D¹ on the cross-pieces D, as shown for example,
in Figures 3 and 4. Most of these cross-pieces are formed with the lugs at one
end only, the other end being formed with the projections D³. The lugs D' are

page_text: provided with the openings D³ to receive these projections. Said lugs are sprung
apart to allow the projections to enter the openings D³, and then spring back to
their normal position, thus connecting the ends of the connecting pieces together.
As illustrated in Figure 3, the projections Da are provided with beveled faces D*,
but it is of course evident that these beveled faces may be dispensed with, as
indicated, for example, in Figure 7. After the ends of the cross-pieces D have
been connected together, as shown in Figures 4 and 5, the projections D2 are bent
or mutilated in any convenient manner so as to engage the lugs D¹ thus forming a
strong and durable joint, as shown, for example, in Figure 6. The riveting of
these projections forces the ends of the cross-pieces against the warp C, thereby
producing a tight and secure joint. After the joints between the cross pieces have
been formed, as shown in Figure 6, the prism plate may then be immersed in an
electrolytic bath, and the frame completed by depositing metal
the warp
upon
C
and the cross-pieces D. The riveting of the ends of the cross-pieces brings the
several parts into intimate contact so as to form them into a continuous electrical
conductor. If desired, the several joints may be soldered before the plate is put
into the electrolytic bath. On heating the joint, shown for example, in Figure 6,
to prepare it for the solder, the soldering iron comes in contact with the several
parts united at the joint, so that such parts may be thoroughly heated, thereby
allowing the solder to be effectively applied so as to join all the parts together
This joint after being soldered is illustrated in Figure 8, and I find that an exceed-
ingly strong and endurable joint is produced. When the joint is soldered the pro-
jections D may be dispensed with if desired. Such a construction is shown in
Figure 9, wherein the lugs D¹ on one end of the cross-pieces are provided with the
openings D³, while the ends of the cross-pieces that fit between these lugs are
plain, as shown in said figure. These ends are placed in position, and a small
soldering iron is inserted in the opening D³ so as to make contact with the warp
and both connecting pieces. All three pieces are thus easily and quickly heated,
and a perfect soldered joint may then be formed. Instead of providing both the
lugs Di with the openings D³, I may only provide an opening in one of the lugs,
as shown for example, in Figure 10.
I have described my invention in connection with prism lights, but it is of course
evident that it may be used in connection with other suitable material. It is also
evident that the several parts which I have described may be varied in form and
construction without affecting the result desired, and I therefore do not wish to
be limited in any manner by the construction shown.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is --
1. A joint for the cross pieces of the grid or net which supports the several
sections of the prism plate made and used substantially as shown and described.
2. A prism plate composed of a series of prism sections and an interposed net or
frame-work and joints substantially as shown and for the purpose of holding the
several parts together.
Datad
101 1
^ T '
100x
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.