Mounting Window Prism Plates and Tiles by the Use of Corner Pieces having Radiating Legs.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 28th Aug., 1897
COMPLETE SPECIFICATION.
Mounting Window Prism Plates and Tiles by the Use of Corner
Pieces having Radiating Legs.
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 improvements in mounting prism lights as well as all
other similar or tile-like pieces as for example, prism tiles, stained and ornamental
glass sections and tiles proper.
The object of my invention is to reduce the number of joints or solderings
necessary to complete the grid or net in proportion to the number of tesserae to be
incorporated as a part of the complete plate.
My invention is illustrated in the accompanying drawings, wherein
Figure 1 is a plan view of a prism plate united or formed by means of my
invention.
Figure 2 is a cross-section on the Line 2-2 of Fig. 1.
Figure 3 shows a modification of the form of the prism lights.
Like parts are indicated by the same letter in all the figures.
AA are the square prism lights; B B are hexagon prism lights each having the
body C and the prisms D. E E are a series of corner pieces arranged as shown,
having each the body I with the over-hanging bead portions G G to engage the
edges of the tesserac. In the form shown in Figure 3, the tesserac are hexagonal,
and therefore the corner pieces K have three legs H H. In the form shown in
Figure 3, there would be necessary a surrounding frame J. In all cases, the ends
of the legs when they come together or when they approach the surrounding
frame are beveled so as to present to each other or to the frame smooth opposed
parallel surfaces for being united or soldered together. It will be observed that
the number of solderings or joints to be completed is greatly reduced from the
number commonly employed in the ordinary methods. The several corner pieces
when brought together with their surrounding tesserae may be permanently
secured together by firmly uniting the parts where they come together, or they
may be but temporarily united at such points, and the whole may then be sub-
jected to the action of the electrolytic bath to complete the mounting by the elec-
tro-glazing process. The forms of the frame and beads are shown in the cross-
section, but obviously they may be altered at will, and indeed in many instances
the beads may be removed to a great degree or even wholly, except perhaps at the
corners of the tesserae. This would be particularly true where the plate was to be
subjected to the electrolytic bath. In the case of prism lights it would be highly
desirable, if not, necessary to reduce the bead very much, at least on the prism
side. This would be particularly true if, as in the preferred forms of prism lights,
the prisms were to extend wholly across the face of the prism lights.

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My invention is, however, applicable, as previously stated, to stained glass and
other tile-like tesserae.
Having now particularly described and ascertained the nature of my said in-
ention and in what manner the same is to be performed, I declare that what I
claim is:
A grid or net for uniting tile-like sections, particularly prism sections into a
complete plate comprising a series of corner pieces shaped and having the propor-
tions with reference to the tile sections, substantially as shown and described and
for the purpose specified.
Dated this 13th day of July 1897.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.