Framing Window Prism Plates by Electro-glazing on the Top of a Paste.
Year: 1897

page_text: Date of Application, 13th July, 1897-Accepted, 28th Aug.,
1897
COMPLETE SPECIFICATION.
Framing Window Prism Plates by Electro-glazing on the Top of
a Paste.
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 methods of mounting prism lights, and has for its object
to provide means therefor. It is illustrated in the accompanying drawing,
wherein,
Figure 1 is an elevation of a prism plate,
Figure 2 is a cross section on the line 2-2 of Figure 1;
Figure 3 is an enlarged detailed cross section.
Like parts are indicated by the same letter in all the figures.
A is the sash border or mounting frame; B B the members of the frame or grid;
and such members may be composed of lead bars channeled in the usual manner;
CC are quantities of cement, preferably conducting cement, and perhaps preferably
all plumbago or a compound thereof; I are prism lights; E E coverings of
electrically deposited metal which surrounds the exposed surfaces of the bars and
cement and stiffens the frame.
I have spoken of prism lights, but obviously any kind of sections, for example,
ornamented glass sections can be united in this manner to form the complete plato
or window. The paste or cement commonly employed to make a tight joint
between the metal bars of the grid or frame and the edges of the glass sections is
liable to run, and is long in hardening, and has various other objectionable
qualities which lead to additional expense in mounting or cleaning the glass when
mounted, and which things result in detracting from its appearance, its
permanency and its value for the purposes for which it was intended. I obviate
these difficulties by electro-plating onto the cement, using for that purpose prefer-
ably an electrically conducting cement, or the cement when in position may have
applied to it a conducting surface, so that the upper or exposed portion of the
cement will be a conductor, and will thus serve when the whole is placed in the
bath to cause a deposit of metal thereon.
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. plate consisting of a series of sections united by means of a grid, a paste
interposed between the grid and the sections, and an electrically deposited coat of
metal over the exposed surface of such cement.
2. A plate consisting of a series of sections united by means of a grid, a paste
interposed between the grid and the sections, and an electrically deposited coat of
metal over the exposed surfaces of such cement and over the exposed surfaces of
the grid also.

page_text: 3. Forming a grid or frame for prism plates by assembling them together, and
separating them by a slight net or frame, then filling in with paste and then
electro-depositing over the paste a metal frame so as to cover the paste and cover
and stiffen such slight frame, substantially as shown and described.
Dated this 13th day of July 1897.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.