UTILIZING THE WASTE MATTER RESULTING FROM COAL WASHING, AND PREPARING THE SAME FOR USEFUL PURPOSES
Year: 1878

page_text: LETTERS PATENT to John Watson Ormiston, of Shotts, in the County of
Lanark, North Britain, Ironworks Manager, for the Invention of "UTILIZING
THE WASTE MATTER RESULTING FROM COAL WASHING, AND PREPARING THE
SAME FOR USEFUL PURPOSES."
Scaled the 1st October 1878, and dated the 25th July 1878.
PROVISIONAL SPECIFICATION left by the said John Watson Ormiston at
the Office of the Commissioners of Patents on the 25th July 1878.
JOHN WATSON ORMISTON, of Shotts, in the County of Lanark, North Britain,
Ironworks Manager.
" UTILIZING THE WASTE MATTER RESULTING FROM COAL
WASHING, AND PREPARING THE SAME FOR USEFUL PURPOSES."
This Invention has for its object to utilize the fine waste matter resulting from
coal washing, and thereby to prevent such waste from polluting streams or water-
courses, or from being collected or deposited as refuse.
In the course of experiment it has been found that such fine waste material con-
tains the necessary proportion of clay and other substances to render it suitable
for coating or "blacking" the surfaces of moulds in which iron and other castings
are run; that is to say, when prepared as herein-after described, this waste
material becomes a substitute for the "moulder's blacking" at present used.
The fine waste or refuse matter in being washed from the coal is dissolved or
mechanically suspended in a large quantity of water, which is run into settling
ponds or vessels, wherein the solid fine matter falls down in a compact state. In
this state the residual water is separated from the solid matter by evaporation or
other suitable process, thereby leaving the solid matter as dry impalpable powder,
in which state it may be commercially dealt with as "founder's blacking."
In preparing the waste substance for the purpose herein described, it is desirable
to pass the dry powder through a fine sieve for the purpose of separating pieces of
gritty matter or matter not in the state of powder.

page_text: For practical use in coating dry sand or loam moulds the "blacking" produced
in the manner herein-before described is mixed with water for the purpose of
enabling it to be laid or painted on the moulds by a brush or piece of tow.
The powder obtained in the manner herein-before described instead of being
mixed with water for coating the surfaces of dry sand and loam moulds may also
be used in the dry state by being finely sifted over the surfaces of what are known
as green sand moulds.
Another purpose for which the said powder may be employed is for being mixed
with ordinary moulding sand on the foundry floor in place of coal dust, specially
ground for that purpose.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said John Walter Ormiston in the Great Seal Patent Office on the 16th
January 1879.
JOHN WATSON ORMISTON, of Shotts, in the County of Lanark, North Britain.
UTILIZING THE WASTE MATTER RESULTING FROM COAL WASHING, AND PREPARING
THE SAME FOR USEFUL PURPOSES."
My said Invention has for its object to utilize the fine waste matter resulting
from coal washing, and thereby to prevent such waste from polluting streams or
watercourses, or from being collected or deposited as refuse.
In the course of experiments which I have made I have found that such fine
waste material contains the necessary proportion of clay and other substances to
render it suitable for coating or "blacking" the surfaces of moulds in which iron
and other castings are run; that is to say, when prepared as herein-after described
this waste material becomes a substitute for the "moulder's blacking" at present
used.
The fine waste or refuse matter in being washed from the coal is dissolved or
mechanically suspended in a large quantity of water, which is run into settling
ponds or vessels, wherein the solid fine matter falls down in a compact state. In
this state the residual water is separated from the solid matter by running it off
therefrom, or by evaporation, or by both, thereby leaving the solid matter as dry
impalpable powder, in which state it may be commercially dealt with as "founder's
blacking."
In preparing the waste substance for the purpose herein-described, it is desirable
to pass the dry powder through a fine sieve for the purpose of separating pieces of
gritty matter or matter not in the state of powder.
For practical use in coating dry sand or loam moulds the "blacking" produced
in the manner herein-before described is mixed with water for the purpose of
enabling it to be made or painted on the moulds' by a brush or piece of tow.
The powder obtained in the manner herein-before described, instead of being
mixed with water for coating the surfaces of dry sand and loam moulds, may also
be used in the dry state by being finely sifted over the surface of what are known
as green sand moulds.
Another purpose for which the said powder may be employed is for being mixed
with ordinary moulding sand on the foundry floor in place of coal dust specially
ground for that purpose.
Having now described and particularly ascertained the nature of my said Inven-
tion, and the system, mode, or manner in or under which the same is or may be
used or practically carried into effect, I would observe in conclusion that what I
consider to be novel and original, and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is, utilizing the waste matters
resulting from coal washing for blacking moulds, or for being mixed with ordinary
moulding sand by preparing the same in the manner herein-before described.
In witness whereof, I, the said John Watson Ormiston, have hereunto set
my hand and seal, this Fourteenth day of January, in the year of our Lord
One thousand eight hundred and seventy-nine.
JOHN WATSON ORMISTON. (L.S.)