Improved Treatment of Glass for Coating Purposes as a Backing for Slabs, Tiles, Facing Plates, and the like, and for Light Reflection and other purposes.
Year: 1898

page_text: Date of Application, 11th May, 1898-Accepted, 24th Sept.,
1898
COMPLETE SPECIFICATION.
Improved Treatment of Glass for Coating Purposes as a Backing for
Slabs, Tiles, Facing Plates, and the like, and for Light Reflection
and other purposes.
We, JAMES TYRRELL NEWELL, of 184, Warham Street, Kennington Park,
Surrey, Lithographic Printer, and ARTHUR MILLER, of Langford, 40, Brixton Hill,
Surrey, Leather Merchant, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention has for object, the preparation of a plastic compound or body
as a base for the back of sheet glass, and subsequent treatment of same by a coarse
granulated material, and the after combination by heat to constitute a rough
backing on to which Portland or other like cement can be placed and which when
set forms a key for attachment to walls, the articles thus prepared serving as slabs,
tiles, facing plates, and the like, and are available for reflecting light into dark
places such as in basements of buildings, areas, as wall facings in lieu of glass
faced or enamelled bricks or glazed tiles. They can be of any kind of glass but
preferably opal with a clear front, and can be arranged in any manner, and if
desired in frames for securing to a wall, or be suspended at any desired angle as
daylight reflectors for producing a soft tone of light pleasant to the eye instead of
harsh rays, as by the present systems.
The slabs or glass sheets prepared as above are available for the walls of bath
rooms and lavatories, around sinks, the sculleries, and other places where clean-
liness and sanitation are desirable.
This invention is carried out as follows: We take a sufficient quantity of
British pitch, say, 100 lbs. and after boiling it to a consistency of thick paste
we add a small quantity, say, 5% of gas tar and well stir this in, and if the boiling
be continued we add another 5% of gas tar, and so on until the mixture is of
about the consistency of ordinary paint and capable of being brushed, while hot,
on to the back of the glass, the coatings being laid on until of sufficient depth as
to receive a sprinkling of coarse granulated clinker or coarse coke breeze having
absorbent properties.
The sheets or pieces of glass thus far prepared are allowed to cool, they are then
arranged face downward on trays and sprinkled with the coke breeze or clinker
and pushed into an oven with top heat only to re-melt the tarry pitch into which
the clinker or coke breeze by its absorbency clings and sinks, leaving a rough
uneven coat which when the glass is removed from the oven becomes quite hard
by exposure and forms a key to which Portland, Roman, Keenes, or other known
cements can be spread and be built up, or by protecting the edges of the glass by
a lip edging, a wash of cement can be poured onto the pitch backing and be
impressed with any device, or be scored, or by grating like mould can be chequered
or roughened up ready for use such as for plastering onto walls or as before
explained.
The sheets or pieces of glass previous to the foregoing treatment can be orna-

page_text: mented in colour, or otherwise in imitation of mosaic, or may be prepared after the
style described in a previous Patent No. 14852 dated 2nd August 1894.
Having now particularly described and ascertained the nature of this inven-
tion. and in what manner the same is to be performed. we declare that what we
claim is;
-
1. The hereinbefore described process or means for coating slabs, tiles, and the
like from glass in pieces or sheets with a compound of boiling pitch having from 5
to 15% of gas tar mixed therein and onto which granular clinker or coke breeze
is sprinkled as an absorbent, submitting the material to top heat in a furnace for
the thorough association and rendering the same ready for receiving a floating of
ordinary cement, as and for the purpose or purposes set forth.
2. Treating the back of opal glass sheets with a combined pitch and gas tar
mixture, covering same with a coarse granular absorbent body, and subjecting the
so coated sheets to top heat for complete association prior to backing up by cement,
as and for the purpose or purposes described.
Doted hi 11th
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said James Tyrrell Newell and Arthur Miller.