Mounting Window and like Prism Lights by carrying the Metal of the Prism Frame into or about Grooves or Projections on the Prisms.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 4th Sept., 1897
Mounting Window and like Prism Lights by carrying the Metal of
the Prism Frame into or about Grooves or Projections on the
Prisms.
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
performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to prism plates, and has for its object to provide means for
uniting a series of sections of prism lights together in such manner as to produce
prism plate.
The invention is illustrated in the accompanying drawing, wherein
Fig. 1 is an elevation of a prism plate.
Figure 2 is a section on the line 2-2 of Figure 1.
Figure 3 is an elevation of a prism light looking toward the prism side.
Figure 4 is an elevation of the same, looking toward the plane side.
Figure 5 a section on the line 5-5.
Figure 6 a section on the line 6-6.
Like parts are indicated by the same letter in all the figures.
I have attempted here not to show every form of prism light or plate which
might illustrate my invention, but simply to show a single form or arrangement, or
rather to show on a single prism light two alternative prisms which might be used
separately or together.
A is the frame of the prism plate; B B the prism lights, having each two
prisms, B B¹.
In Figure 3, I have shown on one side of the prism plate and at the edge of the
prisms the slight depressions C, and on the opposite side, similarly placed
elevations C', and also the edge grooves D D on the prism side.
In Fig. 4, I show the reverse side of the plate, with the grooves D₁ D₁, and
the depressions D2 and slight projections 1³. Either the depressions, the
projections or the grooves may be employed to wholly or partially surround the
plane surface of the prism light, and either the depressions or projections
may be used at the ends of the prisms on the prism side.
These prism lights so constructed are intended to be electro-glazed together.
In the process of electro-glazing, there is interposed between the edges of the
prism lights and substantially in the same plane therewith a series of warps and
ties, or metal strips, which when properly united in any convenient manner form
a sort of grid or net; the ties E E are shown in the drawing.
Now the parts having been thus associated together, if the whole be immersed
in the electric bath, a deposit will be formed, and this depositing being continued
the net and
for a sufficient length of time, the metal will be deposited about
between it and the edges of the prism lights, and in the grooves or depressions
or about the slight projections, as the case may be. By this means the whole will
be very firmly and securely united, the parts being kept from movement away

page_text: from each other by means of the metal that is deposited in the grooves or
depressions or about the projections.
Of course the mass of metal to be deposited upon the grid or net, in the meshes
of which the prism lights are received, may be deposited otherwise than by
electroysis and may indeed be mechanically forced into position, though the
method of the electro-glazing process I prefer.
Having now described and ascertained the nature of the said invention and in
what manner the same is to be performed, I declare that what I claim is:
:—
1. A prism plate comprising a series of prism lights and a net or grid, in the
meshes of which the prism lights are placed, said prism lights provided with
broken surfaces along their edges and masses of securing material received upon
such broken surfaces and attached to the grid or net so as to hold the prism lights
from lateral movement.
2. A prism plate comprising a series of prism lights, a grid or net, in the meshes
of which such rism lights are placed, depressions about the surfaces of such
prism lights adjacent to their edges and deposited metal about the grid or net and
within such depressions so as to hold the lights from lateral motion.
3. A prism plate comprising a series of prism lights, a grid or net, in the meshes
of which the prism lights are placed, depressions on the surfaces of the prism
lights about and near to the edge thereof, and a mass of electrically deposited
metal about the members of the grid or net and overhanging the edges of the prism
lights so as to be received into the depressions on the surfaces thereof.
VIXXD
བས ས་
LOOK
For the Applicant,
W. LLOYD WISE,
'
46 Lincoln's Inn Fields, London, W.C., Chartered Patent ent.