IMPROVED AIR HEATING APPARATUS FOR WARMING BUILDINGS
Year: 1884

page_text: We WILLIAM JAMES MASON, Consulting Engineer of N° 32 Woodfield Crescent,
Harrow Road, London, W. and GEORGE SWANN, Hot Water Engineer of N° 418
Portobello Road, North Kensington, London, W. do hereby declare the nature
of our said Invention for "IMPROVED AIR HEATING APPARATUS FOR WARMING
BUILDINGS" to be as follows:-
Our Invention relates to an improved construction of air heating apparatus for
warming purposes and the Invention consists in the construction and arrangement
of furnace, flues and pipes, hereafter described.
The furnace chamber is constructed of fire lumps and is closely embraced at the
top and two sides by series of inverted U shaped air heating pipes which serve to
hold the fire lumps together. These pipes rise from chambers below with which
they communicate for the admission of air to the air heating pipes, the entrance to
said chambers being at the opposite end of the apparatus to that at which the
furnace chamber is situate. The furnace chamber communicates with a series of
large horizontal flues at the upper part of the apparatus immediately above the
horizontal or transverse portion of the air heating pipes the products of combustion
passing through these flues successively on their way to the chimney.
The inverted Ushaped air heating pipes are placed closely together side by side
and to allow for expansion and contraction their adjacent sides are fitted together
by tongue and groove or other joints formed in ribs cast on the sides of the pipes
and the whole series of pipes are tied together by tie bolts passing through flanges
cast on the outer sides of the pipes.
The horizontal flues are constructed in short sections tongue and groove jointed
together and cast with flanges through which tie bolts pass from end to end to hold
the sections together. By this sectional construction of the air heating pipes and
flues the furnace and apparatus may be readily constructed of any required
dimensions and air heating capacity by employing a greater or less number of the
said sections.
The whole of the above described apparatus is enclosed in a setting of brickwork
provided at one end with a furnace front having fire and cleaning out doors by
which access may be readily had to all the flues and chambers.
The air to be heated enters at the air chambers at the rear end of the apparatus
and rises in the series of air heating pipes which embrace the furnace chamber and
is brought out under the horizontal flues at the upper part.
-
Thated th: bord
1004
•

page_text: We WILLIAM JAMES MASON, Consulting Engineer of N° 32 Woodfield Crescent,
Harrow Road, London, W. and GEORGE SWANN, Hot Water Engineer of 418
Portobello Road, North Kensington, London, W. do hereby declare the nature
of the said Invention for "IMPROVED AIR HEATING APPARATUS FOR WARMING
BUILDINGS," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :—
Our Invention relates to an improved construction of air heating apparatus for
warming purposes and the Invention consists in the construction, combination and
arrangement of furnace flues and pipes hereafter described.
In order that the Invention may be more readily understood we have illustrated
it in the accompanying Drawings forming part of this Specification and we will
proceed to describe it with reference thereto. Figure 1 is an elevation of the
furnace front. Figure 2 is a transverse section of the apparatus on line 1-1
Figure 3. Figure 3 is a horizontal section of the apparatus on line 2–2 Figure 4.
Figure 4 is a longitudinal section of the same on line 3-3 Figure 1. The same
letters of reference indicate the same parts in all the Figures.
The furnace chamber A is constructed of fire lumps a and is closely embraced at
the top and two sides by series of air heating pipes B which serve to hold the fire
lumps together. These pipes are each composed of two vertical pipes B at either
side of the furnace chainber, united by a transverse pipe B¹. The vertical pipes B
rise from chambers or passages C below with which they communicate for tho
admission of air to the air heating pipes B, the entrance to said chambers being
at C¹ at the opposite end of the apparatus to that at which the furnace chamber is
situate. The furnace chamber A is provided with a suitable grate, and communicates
by a flue A¹ with a series of large horizontal flues D D D at the upper part of
the apparatus immediately above the horizontal or transverse portions of the air
heating pipes B the products of combustion passing through these flues D D¹ D'
successively in the order named on their way to the chimney. For this purpose
the flue A leads into the rear end of the flue D which cominunicates by a chamber e
at the front end, with the middle flue D¹ which communicates by a similar chamber
at the rear end with Blue D2 which communicates at the front end with the chimney
(not shown).
A partition in chamber e prevents communication between flues D¹ and D² at
their front end.
The a'r heating pipes B open out at B2 immediately beneath the flues D, D¹, D'
and they are placed closely together side by side and to allow for expansion and
contraction their adjacent sides are fitted together by tongue and groove joints
förined in ribs b cast on the sides of the pipes and the whole series of pipes are
tied together by tie bolts b¹ passing through flanges b² cast on the outer sides of
the pipes.
The horizontal flues D D' D² are constructed in short sections tongue and groove
jointed together at d and cast with flanges d' through which tie bolts de pass from
end to end to hold the sections together. By this sectional construction of the air
heating pipes B and flues D the furnace and apparatus may be readily constructed
of any required dimensions and air heating capacity by employing a greater or less
number of the said sections.
The above described apparatus is enclosed between front and back settings of
brickwork or iron F which leave the pipes B and flues D exposed to permit the
free radiation of heat. The apparatus is provided at one end with a furnace front

page_text: having fire doors A2 and cleaning out doors C2 for the flues C and E for the flues D
by which access may be readily had to all the flues.
The air to be heated enters the air flues C at C¹ and rises in the series of air
heating pipes B wherein it is heated by conduction and radiation from the walls of
the furnace chamber and is brought out under the horizontal flues D D¹ D² where
it is still further heated by radiation therefrom.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed we declare that what
we claim is :
1 The combination with the furnace chamber of the series of air heating pipes
embracing the sides and top of the furnace chamber, and serving both to hold the
parts of said chamber together and to heat the air passing through them the said
pipes, communicating at bottom with air inlet flues and having their outlet at the
top substantially as herein shown and described.
2nd The combination and arrangement of the furnace chamber, air heating pipes
embracing the sides and top of said chamber having their inlet and outlet as
described and the series of horizontal flues connecting the furnace chamber with the
chimney substantially as shown and described.
3rd In a heating apparatus constructed and arranged as herein described the
mode of jointing and tieing together the air heating pipes in any suitable number
to form a structure of the required heating capacity substantially as shown and
described.
4th In a heating apparatus constructed and arranged as herein described the
construction of the horizontal flues of sections jointed and tied together substantially
as and for the purpose herein set forth.
5th The whole combination and arrangement of parts constituting the improved
air heating apparatus substantially as herein shown and described.
W. J. MASON.
GEORGE SWANN.