Improvements in the Appliances and Methods for Heating Gas and Air and Supplying the same to Boiler and other Furnaces and Fire Places.
Year: 1892

page_text: Date of Application, 6th Jan., 1892
Complete Specification Left, 30th Sept., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Appliances and Methods for Heating Gas and
Air and Supplying the same to Boiler and other Furnaces and
Fire Places.
.
We THOMAS NICHOLSON of Tudno Villa, Colwyn Bay in the County of
Denbigh, out of business, and EDGAR THOMAS NICHOLSON, of Tudno Villa,
Colwyn Bay, in the County of Denbigh, Engineer, do hereby declare the nature
of this invention to be as follows:-
-
The improvements consist in the heating of both gas and air before using and in
supplying the latter (so as to get more complete combustion) in considerably
greater quantity than the former without materially increasing the size of the
flues or pipes required to carry it.
The gas and air obtain their heat by being passed first under the furnaces of the
gas producers, or other suitable structures, and then under, or alongside of, or over,
the radiated heat of the furnaces or places in which they are to be consumed.
Where practicable we also introduce steam jets to increase both heat and velocity
of the gas and air.
To obtain the greater quantity of air we use a small air blast in such a way as
to act as an injector.
Dated this 5th day of January 1892.
THOS. NICHOLSON.
EDGAR T. NICHOLSON.
COMPLETE SPECIFICATION.
Improvements in the Appliances and Methods for Heating Gas and
Air and Supplying the same to Boiler and other Furnaces and
Fire Places.
We THOMAS NICHOLSON of Tudno Villa, Colwyn Bay, out of business and
EDGAR THOMAS NICHOLSON, also of Tudno Villa, Colwyn Bay, Engineer do
hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The improvements consist in the heating of both gas and air before using, and
in supplying the latter (so as to get complete combustion), in considerably greater
quantity than the former, without materially increasing the size of the flues, or
pipes, required to carry it.
The gas and air obtain their heat by being passed first under the furnaces of the
gas-producers, or other suitable structures, and then under, alongside of, or over,
the radiated heat of the furnaces or places in which they are to be consumed.
Where practicable we also introduce a small steam jet which gives both heat and
velocity. To obtain the greater quantity of air we use a small air blast in such a
way as to act as an injector. Where the fires do not occupy the whole base of the
gas-producers or other structures we put in a false roof and thus cause the heat to
distribute equally over the whole area.
The accompanying drawings will show clearly the working of the invention.
Fig. 1 is a side view of an ordinary Lancashire boiler. Round this we cause
gas and air to pass in the direction of the arrows,-the gas in. flues B, and the
air in flues A at the back as marked by the dotted lines.
Fig. 2 is a front view of the same, showing where the gas and air enter these
flues and emerge at the boiler surface, in which they mix and are consumed instead
of coal. In passing round so many curves the gas and air naturally encounter

page_text: resistance, and, to overcome this, we insert steam jets as shown by the letter C.
in Fig. 1.
These jets can be of any number, and be placed in any position, found to be
most desirable to facilitate the progress of the gas and air along the heating flues.
For supplying hot gas and air to other than boiler furnaces we are obliged some-
what to vary the arrangement of the flues, carrying them underneath. the
structures which get their heat in or from the bottom, and alongside, under, over,
around or through the radiated, waste, and effluent beat of those having their fires
in the body, ends, sides, or top. Gas retorts, and producers,-brick, pottery, lime,
and calcining kilns,-puddling, melting, and annealing furnaces,-furnaces for salt
pans, drying sheds and other purposes are available; but some get their heat from
one position, and some from another, and are so varied in form that drawings to
show the whole would be voluminous. Such, however, are not necessary. The
fundamental method of carrying out the invention is the same in all and the
drawings and descriptions given will enable any practical man to carry out the
principle with any structure that will give the necessary heat.
In addition to the arrangement at the boiler, and the action of the steam jets, it
is only necessary to show the increased air supply and a special arrangement for
diffusing the heat over underneath flues. This we proceed to do by Figures 3
and 4.
Fig. 3 shows a gas flue B, and air flues A underneath a furnace in the bottom of
any structure. The gas may be generated in any retort, or producer, and then
passed along flue B (the furnace being above) to the point where it has to be
consumed, getting a second hot bath, as shown in Fig. 1, where it has to be used
in boilers, and also if in other furnaces where heating flues can be placed,—and
the same with the air,-so as to avoid cooling down the utilized heat of any
furnace. The air enters flues A from the atmosphere, but, as it has to be of at
least ten times the volume of the gas, we assist it by a fan or blower, placed at the
entrance to the centre flue at D, where, by forcing the air rapidly down the flue,
it causes a vacuum at point E, which air from the side flues A rushes to fill, and
thus the fan or blower acts as an air injector.
It is necessary that these underneath flues shall be well supplied with heat all
over, but in some instances the furnace or fire does not occupy the whole base of
the structure. In such a case we block the heat by a cover F. in Fig. 4 (which is
a side view of Fig. 3) and compel it to travel, as shown by arrows, over the whole
of the flues before it can rise to enter the body of the structure where it has to
do its work.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The heating of gas and air in flues or pipes underneath such structures as
work with bottom furnaces.
2. The heating of gas and air in flues or pipes alongside, over, under, or through
such structures, and their heat passages, as work by heat in the body, ends, sides,
or top.
3. The arrangement of the air flues, or pipes, so as to enable a fan or blower to
act as an injector.
4. The use of a fan, or blower, to increase the supply of air in the heating flues
or pipes.
5. The use of steam so as to overcome the back action in the flues or pipes.
6. The block to the heat of bottom furnaces.
7. The combination of these advantages or any two of them.
Dated this 20th day of September 1892
THOS. NICHOLSON.
EDGAR T. NICHOLSON.