Furnaces and other Fireplaces.
Year: 1885

page_text: Furnaces and other Fireplaces.
I, WILLIAM GUNN, of 11 Pancras Lane, in the City of London, Gentleman do
hereby declare the nature of the said invention for "A NEW OR IMPROVED
COMPOUND FOR THE PREVENTION OF SMOKE IN FURNACES AND OTHER FIREPLACES
to be as follows:-
"
The object of this invention is to provide a compound for the prevention of
smoke in the combustion of coal, and more particularly for the prevention of smoke
in the combustion of bituminous coals used in the furnaces of locomotives.
The compound consists of the following ingredients in proportions varying
according to circumstances:-
Bi-carbonate of Ammonia.
Saltpetre.
Bi-carbonate of Soda.
Rosin,
Epsom Salts.
Common Salt.
Coal Dust.
These ingredients are thoroughly ground and then mixed together, the coal dust
being used merely as a base to prevent the cementing of the other ingredients into
a hard mass,
The compound as thus prepared is dissolved in water and the solution is sprinkled
The coal
uniformly upon the coal before the same is charged into the furnace.
thus treated will, during combustion, produce much less smoke and deleterious
gases than coal not so treated, and a considerable economy in the consumption of
fuel is also effected.
Qual DESS
These ingredients are thoroughly ground and then mixed together, the coal dust
being used merely as a base to prevent the cementing of the other ingredients into
a hard mass,
The compound as thus prepared is dissolved in water and the solution is sprinkled
uniformly upon the coal before the same is charged into the furnace.
The coal
thus treated will, during combustion, produce much less smoke and deleterious
gases than coal not so treated, and a considerable economy in the consumption of
fuel is also effected.

page_text: COMPLETE SPECIFICATION.
A New or Improved Compound for the Prevention of Smoke in
Furnaces and other Fireplaces.
I, WILLIAM GUNN, of 11 Pancras Lane in the City of London, Gentleman, do
hereby declare the nature of the said invention for "A NEW OR IMPROVED
COMPOUND FOR THE PREVENTION OF SMOKE IN FURNACES AND OTHER FIREPLACES
"
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
The object of this invention is to provide a compound for the prevention and
purification of smoke in the combustion of coal in furnaces and other fireplaces.
The compound consists of the following ingredients:
Carbonate or bi-carbonate of ammonia.
Salt-petre (Nitrate of Potass, or of Soda). _
Carbonate or Bi-carbonate of Soda.
Rosin.
:
Epsom salts (Sulphate of Magnesia, Sulphate of Soda, Glauber Salts or
Magnesic Sulphate, and Sodic Sulphate).
Common Salt (Chloride of Sodium or Sodic chloride) and
a base such as coal dust for example or other suitable material for the purpose of
preventing the cementing of the other ingredients into a hard mass.
These ingredients are thoroughly ground and' then mixed, together, and the
compound thus prepared is, when required for use, dissolved in water and the
solution is then sprinkled upon the coal before the same is charged into the furnace
or other fireplace.
.
.2002
The proportions of the above mentioned ingredients may be varied according to
the nature and quality or kind or description of the coal under treatment; but it
has been found that for the treatment of bituminous and some other English coals
the following proportions give good results:-
-
5 lbs of Carbonate or bi-carbonate of Ammonia.
20 Salt-petre (Nitrate of Potass or of Soda).
»
"
20
Carbonate or bi-carbonate of Soda.
"
Rosin.
"
"
1
20
"
"
33
"
"
1
31
"
Epsom Salts (Sulphate of Magnesia, Sulphate of Soda, Glauber Salts, or
Magnesic Sulphate and Sodic Sulphate.
Common Salt (thoroughly dry) (Chloride of Sodium or Sodic Chloride).
Coal Dust.
r
For the treatment of anthracite and other hard qualities of coal the proportion
may, be varied as follows:-
7 lbs of Carbonate or Bi-carbonate of Ammonia,
17
"
Salt-petre (Nitrate of Potass, or of Soda).

page_text: 20 lbs. of Epsom Salts (Sulphate of Magnesia, Sulphate of Soda, Glauber Salts, or
Magnesic Sulphate and Sodic Sulphate).
31
"
"
8
""
Common Salt (thoroughly dry) (Chloride of Sodium or Sodic Chloride).
Coal dust.
For the treatment of one ton of coal of bituminous quality for example say
4 lbs of the above compound should be dissolved in say two gallons of boiling water,
and then from 3 to 8 gallons of cold water should be added according to the wet or
dry state of the coal. Or if the coal is in large lumps less water should be used.
Coal treated with this compound will, during combustion, produce much less
smoke, and the combustion will be much more perfect, than coal not so treated, and
a considerable economy in the consumption of fuel is thereby effected.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I would have it
understood that I do not confine myself to the exact proportions given above nor
to the use of coal dust as a base of the compound, as the same may be varied
according to circumstances, but that what I claim is :-
The compound for the economization of coal and prevention of smoke in the
combustion of coal, consisting of
-
Carbonate or Bi-carbonate of Ammonia.
Salt-petre (Nitrate of Potass, or of Soda).
Carbonate or Bi-carbonate of Soda.
Rosin.
Epsom Salts (Sulphate of Magnesia, Sulphate of Soda, Glauber Salts, or
Magnesic Sulphate and Sodic Sulphate).
Common Salt (Chloride of Sodium, or Sodic Chloride) and
a base, such as coal dust for example, for preventing the mass from cementing
together, as herein before described.