THE BETTER CONSTRUCTION OF A DOUBLE- BACKED DOUBLE BOILER FOR HEATING WITH HOT WATER CHURCHES, HORTI- CULTURAL BUILDINGS, MANSIONS, THEATRES, &c.,c
Year: 1857

page_text: LETTERS PATENT to George Steell and William Steell, of Kew Road,
Richmond, in the County of Surry, Nursery Florists, Bouquet Makers,
&c., &c., for the Invention of "THE BETTER CONSTRUCTION OF A DOUBLE-
BACKED DOUBLE BOILER FOR HEATING WITH HOT WATER CHURCHES, HORTI-
CULTURAL BUILDINGS, MANSIONS, THEATRES, &c., &c."
Sealed the 23rd October 1857, and dated the 22nd August 1857.
PROVISIONAL SPECIFICATION left by the said George Steell and William
Steell at the Office of the Commissioners of Patents, with their Petition,
on the 22nd August 1857.
We, GEORGE STEELL and WILLIAM STEELL, of Kew Road, Richmond, in
the County of Surry, Nursery Florists, Bouquet Makers, &c., &c., do hereby
declare the nature of the said Invention for "THE BETTER CONSTRUCTION OF
A DOUBLE-BACKED DOUBLE BOILER FOR HEATING WITH HOT WATER CHURCHES,
HORTICULTURAL BUILDINGS, MANSIONS, THEATRES, &C., &c.," to be as follows:-
The inner part of the boiler consists of two iron boiler plates rivetted with
sound joints to a frame of proportionable length and substance, made with
square iron, with straight, fluted, vandyke, or curved sides, and a circular,
square, or angle top, the square iron frame to be of a substance to allow room

page_text: for the water in proportion to the size of the boiler, the back end of which is
also made with two pieces of iron boiler plate, and two pieces of square iron;
the two pieces of plate cut of an oblong shape, and angled at each end to fit
on and be rivetted to the sides of the inner and outer plates of the inner part
of the boiler, with one of the pieces of square iron rivetted on between the
plates to range with the bottom of the inner part of the boiler, and the other
piece of square iron shut on to a frame, which is made of the same shape as
the top of the inner part of the boiler, and is rivetted in between the plates
at the back horizontally, and to follow the plates at the top of the inner part
of the boiler, leaving sufficient space in the back under the top and over the
back of the under part of the boiler, for the fire to pass through against the
back and under the inside of the upper part of the boiler, which also consists
of two iron boiler plates with iron frame made in a similar way, and of the
same shape as the top of the inner part of the boiler, but as much longer and
larger as to allow room for a flue of proportionable size between the two.
The back of the upper part of the boiler being also made of two pieces of
boiler plate, cut of the same shape as the top of the inner part of the boiler,
and fixed on to the upper part of the boiler with angle iron round the top of
each plate, and a piece of square iron rivetted between the two plates across
the bottom, to range with the square iron at the bottom sides of the upper
part of the boiler, so that the fire is completely encompassed in the water, and
cannot get away till it has passed twice through the water. The top and
bottom parts, of the boiler are connected togather by a double flanch pipe,
which is bolted on to the top plate of the inner part of the boiler cut for the
purpose, and the under plate of the upper part of the boiler also cut for the
purpose, and again at the end of the boiler by a double long and short elbow
pipe, with flanches bolted on to cuttings in the outer plates at the top and
bottom of the upper and lower parts of the boiler, forming a complete passage
for the water to circulate entirely through the boiler, the flow or outlet pipe
of which is formed with a flanch socket of proportionable size bolted on to the
upper plate of the upper part of the boiler, and the returns or inlets bolted on
to the outside plates on each or either side of the lower part of the boiler,
which is also formed of flanch socket pipes of a proportionable size. We also
claim the right of our Invention in cast iron.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Steell and William Steell in the Great Seal Patent
Office on the 17th February 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
STEELL and WILLIAM STEELL, of Kew Road, Richmond, in the County of
Surry, Nurserymen, Florists, Bouquet Makers, &c., &c., send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of August, in the year of our
Lord One thousand eight hundred and fifty-seven, in the twenty-first year of
Her reign, did; for Herself, Her heirs and successors, give and grant unto
us, the said George Steell and William Steell, Her special licence that we,
the said George Steell and William Steell, our executors, administrators,
and assigns, or such others as we, the said George Steel and William
Steell, our executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "THE BETTER
CONSTRUCTION OF A DOUBLE-BACKED DOUBLE BOILER, FOR HEATING WITH HOT WATER
CHURCHES, HORTICULTURAL BUILDINGS, MANSIONS, THEATRES, &C., &c.," upon the
condition (amongst others) that we, the said George Steel and William
Steell, our executors or administrators, by an instrument in writing under
our, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that we, the said George Steell and William Steell, do
hereby declare the nature of our said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawings hereunto annexed,
that is to say:--
Our Invention that we are now about to bring before the publick has for
its object the quality of heating a large quantity of water in a very short time
at a small expence, and requires considerably less fuel than any other boiler
of the present day to do the same amount of work with, which advantage is
derived from the particular construction of the boiler, it being made to enclose
the fire, so that no heat can escape from it into any brickwork or other con-

page_text: ductor of heat, untill it has passed through the lower and upper flues of it;
whereas in all other boilers the brickwork, which is a good conductor of
beat, is exposed to the fire at once, and consequently divides the strength of
the burning fuel between the contents of the boiler and the brickwork.
Our Invention has also another great advantage over all other boilers in
the double back, against which the most intense heat from the fire has the
greatest effect, and being the part in other boilers where the greatest difficulty
is found to get Welsh lumps or fire bricks to stand, as the intensity of the
heat destroys anything that has hitherto been used for the
It is
purpose.
also a very economical boiler to set, not requireing any Welsh lumps, and but
a small quantity of fire bricks for the arch over the top.
Now our Invention consists of bending two boiler plates to the shape of
the Drawing annexed, and also making a frame to allow room for water, of
square iron, of the same shape and size as the plates to which they are to be
fitted and rivetted, making sound joints all round, except the lower part of
the back, which is left open for the purpose of putting on the back, which is
also made of two pieces of boiler plate bent to fit, and rivetted on to the sides
of the saddle-shaped plates, and to square iron at the top and bottom of the
back, which leaves an arch flue, where the fire passes through into another
part above, constructed upon the same principle, with two boiler plates as
much longer as to allow room for a flue, and also proportionably larger, made
of the same shape as the top of the lower part of the boiler already described,
and rivetted to square iron of the same shape, with the exception of the back,
which is closed up with two pieces of boiler plate cut to the shape of the
back end of the part now described, and fixed on to the inner and outer plates
by angle iron at the top, and square iron across the bottom, forming the
same space for the water as the other part, and catching the fire as soon as it
passes from the under part of the boiler. The two parts described are con-
pected together by a double flange pipe of a size in proportion to the boiler
fixed on the top at the front of the lower part of the boiler, and under the
front of the upper part, as may be clearly seen in the accompanying section,
and at the outer parts at the back end by a double elbow pipe of proportion-
able size with flange joints, the one elbow being made longer than the other
to fit, and be fixed on with screws to the lower and upper parts of the boiler,
thereby causeing a thourough circulation through the back and all parts of it.
The flow or outlet pipe is a flange socket fixed on the top at the back part of
the boiler, and the inlet or return pipe is a flange socket fixed on one or
both the outer sides of the lower part of the boiler, making it either double
or single

page_text: Having described our Invention, and enumerated some of the advantages
over other heating or warming apparatuses heretofore in use, we claim the
form and arrangement of boiler, as described in Drawings annexed, whether it
be double or treble, round or square, composed of any metal, wrought or cast,
with backs made in one or more parts, and whether the pipes be connected to
or with the boiler in the manner shewn, or in any manner more convenient or
better suited to the circumstances of its application.
In witness whereof, we, the said George Steel and William Steell,
have hereunto set our hands and seals, the Seventeenth day of
February, in the year of our Lord One thousand eight hundred and
fifty-eight
GEORGE STEELL.
(L.S.)
WILLIAM STEELL. (L.S.)
GEORGE STEELL.
(L.S.)
WILLIAM STEELL. (L.S.)