IMPROVE- MENTS IN THE CONSTRUCTION OF HOT WATER BOILERS
Year: 1869

page_text: LETTERS PATENT to William John Jones, of King Street, Cheapside,
in the City of London, Engineer, for the Invention of "IMPROVE-
MENTS IN THE CONSTRUCTION OF HOT WATER BOILERS."
Sealed the 5th April 1870, and dated the 8th October 1869.
PROVISIONAL SPECIFICATION left by the said William John Jones
at the Office of the Commissioners of Patents, with his Petition,
on the 8th October 1869.
I, WILLIAM JOHN JONES, of King Street, Cheapside, in the City
of London, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE CONSTRUCTION OF HOT WATER BOLLERS," to be as
follows:-
My Invention of improvements in the construction of hot water
boilers has for its object to economize fuel and render the boiler more
effective than heretofore, by so constructing and arranging the parts
thereof that an increased heating surface may be obtained, and as much
as possible of the heat given off from the fire may be taken up or absorbed
by the water in the boiler, and thus made available for heating purposes.

page_text: To this end I adapt to and connect with an ordinary saddle boiler
an additional shaped water space or chamber, the vertical part
of which will form the back of the boiler while the horizontal part will
extend over the top of the saddle towards the front. This shaped
chamber is placed a few inches away from the saddle boiler so as to form
a flue or smoke space between them for the passage of the heated
vapours from the fire, and the two water spaces are connected together
by suitable short pipes so that a perfect circulation of water may be
maintained therein. The cold water is supplied to the lower part of the
saddle boiler, and the hot water passes off to the heating pipes through a
pipe attached to the upper side of the shaped chamber. The boiler
is by preference made of welded wrought iron and is to be set in brick-
work. The heated gases from the fire will pass from under the saddle
boiler up against the inner side of the back of the shaped water space,
then under the horizontal part thereof, and will return over the top, and
then pass off to the flue. By this means the heating surface of the
boiler will be nearly doubled, and a very effective boiler in a small space
will be obtained.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William John Jones in the Great Seal Patent
Office on the 8th April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JOHN JONES, of King Street, Cheapside, in the City of London, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of October, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William John Jones, Her special licence,
that I, the said William John Jones, my executors, administrators,
and assigns, or such others as I, the said William John Jones, my
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 "IMPROVE-

page_text: MENTS IN THE CONSTRUCTION OF HOT WATER BOILERS," upon the condition
(amongst others) that I, the said William John Jones, my executors
or administrators, by an instrument in writing under my, 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 I, the said William John Jones, 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, reference being had. to the Drawing here-
unto annexed, and to the letters and figures marked thereon (that is to
say):
My Invention of "Improvements in the Construction of Hot Water
Boilers," has for its object to economise fuel and render the boiler more
effective than heretofore, by so constructing and arranging the parts
thereof that an increased heating surface may be obtained, and as much
as possible of the heat given off from the fire may be taken up or
absorbed by the water in the boiler, and thus made available for heating
purposes.
To this end I construct my hot water boilers in the manner shewn
in the accompanying Drawing, in which Fig. 1 is a longitudinal vertical
section of a boiler constructed according to my Invention and taken
in the line 1, 2, of Fig. 2, which is a sectional elevation of the same,
one half of the Figure being shewn in sectional elevation taken in the
line 3, 4, of Fig. 1, and the other half in transverse section taken in
the line 5, 6, of Fig. 1.
a, a, is the ordinary saddle boiler to which is connected the additional
shaped water space or chamber b, b', the vertical part 6 of which will
form the back of the boiler, while the horizontal part 6' will extend over
the top of the saddle towards the front. This shaped chamber is
placed a few inches away from the saddle boiler, so as to form a flue or
space c between them for the passage of the heated vapours from the fire
in the fire-place f to the chimney, as indicated by the arrows in Fig. 1.
The two water spaces a and b are connected together by suitable short
pipes d, so that a perfect circulation of water may be maintained therein.

page_text: The cold water is supplied to the lower part of the saddle boiler a, as
indicated by the red lines in Fig. 2, and the hot water passes off to the
heating pipes through a pipe e attached to the upper side of the
chamber b¹.
shaped
The boiler is by preference made of welded wrought iron, and is to be
set in brickwork on which it simply rests, as shewn in the Drawing, so
that the heated gases may have an opportunity of acting on all sides of
the water spaces. The heated gases from the fire will pass, as indicated
by the arrows in Fig. 4, from under the saddle boiler a up against the
inner side of the back 6 of the shaped water space, then under the
horizontal part 6' thereof, and will return over the top of the latter, and
will then pass off to the flue. By this means the heating surface of the
boiler will be nearly doubled, and a very effective boiler in a small space
will be obtained.
Having now described my Invention of "Improvements in the Con-
struction of Hot Water Boilers," and having explained the manner of
carrying the same into effect, I claim as the Invention secured to me by
Letters Patent as aforesaid, the combination of the additional shaped
water space b, b¹, with the ordinary saddle boiler for the purpose of
increasing the heating surface of the boiler, as herein set forth.
In witness whereof, I, the said William John Jones, have hereunto
set my hand and seal, the Eighth day of April, in the year of
our Lord One thousand eight hundred and seventy.
TARG