Year: 1887

page_text: I, EDWARD MOORE of the Tyne Flint Glass Works, South Shields in the County of
Durham, Glass Manufacturer, 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 :-
23
My invention relates to the production of a description of opaque glass of a soft
shade of green color, similar to what is termed "Celadon as a color in porcelain
manufacture.
According to my invention I produce opaque glass of this color by means of a
mixture of the oxide of uranium with the black oxide of copper added to the ordinary
batch used in making opaque glass metal; or I obtain as desirable a shade of soft
green by substituting per-oxide of iron or Crocus Martis and black oxide of copper in
suitable proportions instead of the above mentioned oxide of uranium and black oxide
of copper by which latter means I obtain similar and satisfactory results at less
expense than by using the oxide of uranium and the black oxide of copper..
When employing the oxide of uranium and the black oxide of copper in lieu of
Crocus Martis and black oxide of copper I use 15 ozs. of oxide of uranium together
with three ounces of the black oxide of copper to every one cwt. of white opaque
batch. I may employ with equally good results oxide of uranium or any compound
containing an equal quantity of oxide of uranium; Crocus Martis or other form of
peroxide of iron; black oxide of copper or any salt or compound of copper containing
protoxide of copper.
The following ingredients in the proportions stated are those I have found to answer
when combining Crocus Martis (or other form of peroxide of iron) and black oxide of

page_text: copper or any salt or compound of copper containing protoxide of copper with
Cryolite opaque batch.
Sand
Pure Alkali 58%
Carbonate of lime or carbonate of baryta
Nitrate of Soda
Cryolite
-
Crocus Martis or other form of peroxide of iron at
the rate of 30 ozs. per cwt. of batch
-
Black oxide of copper or any salt or compound of
copper containing protoxide of copper at the rate
of 6 ozs. per cwt. of batch
cwts. qrs. lbs. ozs.
00000
72111
0 0
0 0
0 0
ooooo 7
0
0 0
23
4 11
These ingredients are combined and worked as in the manufacture of ordinary
flint glass.
I would here remark that I do not restrict myself to the proportions above given of
any of the named materials or to the precise materials and proportions employed in
producing the opaque batch to which the coloring oxides are added as such may be
varied without departing from the peculiar character of my invention.
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 :-
The addition to an opaque batch of the oxide of uranium or any compound con-
taining an equal quantity of oxide of uranium in conjunction with the black oxide of
copper or any salt or compound of copper containing protoxide of copper or Crocus
Martis or other form of peroxide of iron and the black oxide of copper or any salt or
compound of copper containing protoxide of copper combined in such proportions as
to produce the desired shade of soft opaque green metal or glass which I term
"Eau de Nil."
EDWARD MOORE.
By Harris & Mills,
23, Southampton Buildings,
Agents.