Improvements in the Construction of Boilers for Stoves and Fire Places.
Year: 1889

page_text: Date of Application, 2nd Mar., 1889
Complete Specification Left 27th Sept. 1889-Accepted. 9th Nov., 1889
PRO
DE MULLIATIVA
Improvements in the Construction of Boilers for Stoves and
Fire Places.
I, WILLIAM GEORGE CANNON, of 106 and 107 London Road Southwark, in the
County of Surrey, Gas and Hotwater Engineer, and Manufacturer of Hotwater
apparatus do hereby declare the nature of my said invention to be as follows:-
The object of my invention is to manufacture improved boilers for stoves and
fireplaces.
My invention consists of two chambers, one above the other, and placed a
suitable distance apart to allow space for a nest of tubes, by which the chambers are
united, and through which the water circulates from the lower chamber to the upper,
as it becomes heated. Junctions are also formed to the chambers for the inflow of
cold water and the outflow of heated water, the circulation of the water ensuing in a
manner well known.
Each of the chambers may consist of a single casting, or of two or more parts
bolted or otherwise united together. The junctions to the chambers are fitted with
pipes which may be carried to hot water cisterns, baths, or heating apparatus.
The intermediate tubes between the two chambers form the principal portion of
the heating surface. These tubes may be straight or curved, as found most convenient
and are fitted to the chambers by right and left hand screws cut on their ends, or by
drifting or expanding or otherwise.
The chambers and tubes are secured to an iron plate. An opening is formed in
this plate behind the tubes, leading into a flue at the back of the plate. A damper is
fitted to the flue, whereby the temperature can be regulated.
In order to fix the boiler, the ordinary back of the stove or fire place is removed
and the boiler is put in its place, with the tubes towards the front. The junctions
are then connected with the flow and return tubes, and the boiler is kept constantly
filled with water.
Although my improved boiler is herein before described as applicable to the backs
of ordinary stoves and fire places, I wish it to be understood that I do not confine
myself to that position, as in some cases, it may be more convenient to fix the same
at the side or in other positions, according to the construction of the stove or other
fire place. In some cases also the boiler may be fitted without the back plate, flue
and damper.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Boilers for Stoves and
Fire Places.
I, WILLIAM GEORGE CANNON of 106 and 107 London Road, Southwark, in the
County of Surrey, Gas and Hot water Engineer, and Manufacturer of Hot water
apparatus, do hereby declare the nature of my said invention 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 my invention is to manufacture improved boilers for stoves and Fire-
places.
My invention consists of two chambers, one above the other, and placed a suitable
distance apart to allow space for a nest of tubes, by which the chambers are united,
and through which the water circulates from the lower chamber to the upper, as it

page_text: becomes heated. Junctions are also formed to the chambers for the inflow of cold
water and the outflow of heated water, the circulation of the water ensuing in a well
known manner.
Each of the chambers may consist of a single casting, or of two or more parts
bolted or other wise united together. The junctions to the chambers are fitted with
pipes.which may be carried to hot water. cisterns, baths or heating apparatus.
The intermediate tubes between the two chambers form the principal portion of
the heating surface. These tubes may be straight or curved and of any required
length, as found most convenient, and are fitted to the chambers by screwed collars
or by right and left hand screws cut on their ends, or by drifting, or expanding, or
otherwise.
The chambers and tubes are usually secured to or built up against an iron plate.
An opening is provided behind the tubes leading into a flue formed in the back plate.
A damper is fitted to the flue, whereby the temperature can be regulated.
In order to fix the boiler, the ordinary back of the stove or fireplace is removed,
the back flue is then built in and the boiler is put in its place, with the tubes towards
the front or side. The junctions are then connected with the flow and return tubes,
and the boiler is kept constantly filled with water.
Although my improved boiler is berein before described as applicable to the backs
of ordinary stoves and fire places, I wish it to be understood that I do not comfine to
that position, as, in some cases, it may be more convenient to fix the same at the
side or in other positions, according to the construction of the stove or other fire
place.
In some cases, also the boiler may be fitted without the back plate, flue and
damper.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings in which similar letters of
reference indicate corresponding parts.
Fig. 1 is a front view of my invention, as fitted with a single row of tubes. Fig. 2
is a section on the line 1-2 of Fig. 1. Fig. 3 is a top view of Fig. 1. Fig. 4 is a
front view of the invention, as fitted with a double set of tubes, and Fig. 5 is a
section on the line 3-4 of Fig. 4.
Referring to Figs. 1. 2. and 3. a is the lower chamber. is the. upper chamber.
ccare the tubes. These tubes are shown screwed into the wall of the lower chamber,
and united to the upper chamber by unions, or screwed collars d d. e e are junction
pipes for receiving the inflow of cold water from one or both sides, as required, and
ffare outflow pipes for the passage of the heated water, from whence it flows to
a. bath, radiator, cistern or other receptacle for hot water. g is the back plate so
formed as to provide a flue k as shown. is a plate screwed to the front of the
plate g, and extending from the top of the plate g to the top plate of the chamber b.
m is a damper for regulating the passage of the heated gases in the flue k.
In figs. 4 and 5 my invention is shown having an extra row of tubes c¹ c¹, and
screw plugs n n are also shown, the inlet pipes ee being at the sides.
When fitted at the back of an ordinary grate, and having the damper open, as
shown in Figs. 2 and 3, the heated gases pass round and between the tubes to the
flue, whereby the water is rapidly heated and caused to circulate through the
.boiler.
When the damper is closed the heated gases pass up in front of the boiler, and
the water receives less beat from the fire. The boiler may be used separately and
without the plates g h if preferred.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
1. The manufacture and use of boilers consisting of chambers a and b united by
water tubes and suitably fitted with inlet and outlet pipes and other appliances
substantially as herein before described and illustrated by the drawings.

page_text: 2. In combination with boilers constructed arranged and operating as aforesaid,
the application and use of the back plate y, front plate h, and damper m, forming a
flue for the regulation of the heat imparted to the circulating water, substantially as
herein before described and illustrated by the drawings.
3. The general construction, arrangement, and combination of the several and
respective parts, together constituting my invention of improvements in the construc-
tion of boilers for stoves and fire places, substantially as hereinbefore described and
illustrated by the drawings.
n
10
1000
soplomo
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.