Gases and Air Heated thereby.
Year: 1885

page_text: Gases and Air Heated thereby.
I, JOSEPH BOOTH BUTTERFIELD of No. 100 Valley Road, Bradford Yorkshire,
Manager do hereby declare the nature of my invention for "IMPROVED MEANS
FOR INCREASING THE TEMPERATURE OF FURNACE GASES AND AIR HRATED
THEREBY," to be as follows:-
My invention consists in the employment of certain means for increasing the
temperature of gases arising from furnaces, and also for increasing the tempera-
ture of atmospheric air which is passing through pipes or flues heated by such
gases.
According to my invention I construct any suitable form of furnace and place
in connection therewith any suitable number of pipes or flues against the sides of
which the furnace gases impinge.
The inlets and outlets of the furnace and the pipes or flues are regulated by
valves or dampers so as to confine the heat until the required temperature is
obtained.
I then force air by means of a force pump or other means through the furnace
and through the pipes or flues, the pressure given to both sources being equal or
otherwise.
By these combined means the hot air is under pressure and the temperature can
be made very high. Hot air and gases under pressure obtained in the manner
above set forth is then carried forward by any suitable system of piping or flues
to be employed for drying and heating purposes, such for instance, as heating press
plates in lieu of steam for pressing woven fabrics, and for drying wool, cotton, and
other fibres, and for any other purpose requiring hot air.
As the hot air within the pipes or flues would not be impregnated with gases
arising from the furnace such hot air will be very serviceable for many purposes
in addition to drying fibres.
If it is necessary to moderate the heat within either the pipes or flues, provision
is made to force cold air into them at a part near the outlet.
In some cases it may be necessary to dispense with the hot air pipes and use
only the gases issuing from the furnace, which for heating press plates would
answer very well, as the gases do not come into contact with the fabrics.
Although I have spoken in this Specification of forcing air through the furnace
and through the pipes, I may use suction instead.
.

page_text: Improved Means for Increasing the Temperature of Furnace
Gases and Air Heated thereby.
I, JOSEPH BOOTH BUTTERFIELD, of No. 100 Valley Road, Bradford, Yorkshire,
Manager, do hereby declare the nature of my invention for "IMPROVED MEANS
FOR INCREASING THE TEMPERATURE OF FURNACE GASES AND AIR HEATED
THEREBY " and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement :-
t
My invention consists in the employment of certain means for increasing the
temperature of gases arising from furnaces, and also for increasing the tempera-
tare of atmospheric air which is passing through pipes or flues heated by such
gases.
According to my invention I construct any suitable form of furnace and place
in connection therewith any suitable number of pipes or flues against the sides of
which the furnace gases impinge.
The inlets and outlets of the furnace and the pipes or flues are regulated by
valves or dampers, so as to confine the heat until the required temperature is
obtained. I then force air by means of a force pump or other means through the
furnace and through the pipes or flues, the pressure given to both sources being
equal or otherwise,
By these combined means the hot air is under pressure and the temperature can
be made very high.
Such being the nature and object of my invention I will now proceed to describe
the same more fully and for that purpose make reference to the accompanying
sheet of drawings which illustrate one method of putting my invention into
practice. Fig. 1 represents sectional elevation of a certain form of apparatus
constructed according to my invention, wherein A is an outer shell, and B an
inner shell, preferably lined with bricks or fire proof slabs C for retaining heat,
such inner shell being divided by pipes D, but their open ends are only in com-
munication with the annular space E formed between the two shells A and B.
A furnace or fire place F is arranged within the inner shell B, the heat and gases
arising therefrom, impinge against the cross pipes D which are heated thereby, the
gases finally passing out of the flue G.
.
In order to prevent the air which enters the annular space E from at once
ascending to the top of the said space. E it is subdivided by division plates a,
whereby the air is caused to ascend in a zig zag manner.
Atmospheric air, by means of a pump or other suitable means, is forced through
the pipe H and valve I into the annular space E, and through the heated cross
pipes D, whereby the air becomes heated in passing through them. Atmospheric air
is also forced through pipe J and valve K up through the furnace F, the pressure of
such air being equal to the pressure of the air forced into the annular space E and
pipes D, by which means the air pressure within the pipes and outside of the pipes
is equal, consequently there can be no bursting of the pipes, and when the cross
pipes becomes thin with the heat of the furnace, they will not easily collapse, as
the equality of pressure will support and maintain them.

page_text: It will be seen from the drawings that when the hot gases are required from the
furnace that the top of the flue G is closed by a valve or damper, L, and the
valve M opened, and if pure hot air only is required the valve N, is closed so that
the pure air can pass out of pipe P, but if the air and gases are required from
both the furnace and pipes, then the valve N is opened. The heat of the gases
can be regulated by opening valve R so as to admit cold air up pipe S, as will be
easily understood.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same may be carried into effect, I would
have it understood that I do not confine myself to the exact form or construction
of apparatus berein shewn and described, as the same may be varied, but what
I claim is :-
The heating of air under pressure in manner and for purposes substantially as
herein shewn and described.