IMPROVEMENTS IN STEAM BOLLERS
Year: 1874

page_text: LETTERS PATENT to John Wilson, of Leeds, in the County of York,
Engineer, for the Invention of "IMPROVEMENTS IN STEAM BOLLERS."
Sealed the 6th April 1875, and dated the 6th October 1874.
PROVISIONAL SPECIFICATION left by the said John Wilson at the
Office of the Commissioners of Patents, with his Petition, on the
6th October 1874.
I, JOHN WILSON, of Leeds, in the County of York, Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
STEAM BOILERS," to be as follows :—
This Invention relates to improvements in steam boilers having for
its object the use and employment of water-way tubes connected with
pendant water spaces or vessels so constructed and arranged as to
afford increased heating surface and ready access for cleaning the said
tubes.

page_text: water space or vessel communicating with the upper water space of the
boiler, and connected to which are a series of water tubes or pipes
arranged by preference in the arc of a circle and extending longitudinally
over the fire to the front of the boiler, where each of their terminations
or ends are secured to and communicate with another water space or
vessel. Opposite each tube is an opening closed with portable plates or
covers, so that on removal of these plates or covers free access can be
obtained for a brush or scraper to be introduced for the purpose of
clearing the said water pipes or tubes. This water space or vessel is also
connected by pipes to the water space of the boiler in such manner that
a complete circulation of the water is effected.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said John Wilson in the Great Seal Patent Office on
the 6th April 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WILSON, of Leeds, in the County of York, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of October, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Wilson, Her special
licence that I, the said John Wilson, my executors, administrators,
and assigns, or such others as I, the said John Wilson, my exe-
cutors, 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 "IMPROVEMENTS
IN STEAM BOILERS," upon the condition (amongst others) that I, the said
John Wilson, 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.
1 J.

page_text: Patent.
NOW KNOW YE, that I, the said John Wilson, do hereby declare
the nature of I said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, that is to say:-
This Invention relates to improvements in steam boilers having for.
its object the use and employment of water-way tubes connected with
pendant water spaces or vessels so constructed and arranged as to
afford increased heating surface and ready access for cleaning the said
tubes.
-
When applying this Invention to the class of boiler known as
"Cornish" boiler we form at a convenient distance beyond the bridge a
water space or vessel communicating with the upper water space of the
boiler, and connected to which are a series of water tubes or pipes
arranged by preference in the arc of a circle and extending longitudinal
over the fire to the front of the boiler, where each of their terminations
or ends are secured to and communicated with another water space or
vessel. Opposite each tube is an opening closed with portable plates or
covers, so that on removal of these plates or covers free access can be
obtained for a brush or scraper to be introduced for the purpose of
cleaning the said water pipes or tubes. This water space or vessel is
also connected by pipes to the water space of the boiler in such manner
that a complete circulation of the water is effected.
In order that this Invention may be clearly understood I have herein
give reference to two accompanying Sheets of Drawings marked with
figures and letters of reference, the same letters referring to the same
parts in the various views and figures.
Fig. 1 is a front view of boiler with firing doors removed and one flue
shown partly in section.
Fig. 2 is a cross section of boiler taken at the line a, b, in Fig. 3.
Fig. 3 is a sectional plan, and Fig. 4 a longitudinal sectional eleva-
tion.
A and B are what are commonly called the upper and lower water
spaces. Care the Avos. D the fine hom.

page_text: water spaces or "pockets" formed of wrought iron, which communi-
cate with the upper water space of the boiler. These water spaces or
pockets receive the ends of the tubes or pipes G, which extend over
the fire within the flue, and terminate in other water spaces or boxes H.
communicating through pipes J with the lower water space of the boiler.
The pipes J are constructed of copper or other flexible metals to allow
for the expansion and contraction of the tubes G. Opposite the ends of
the tubes G in the water boxes H are openings covered with plates K,
which can be readily removed to admit of the pipes G being cleaned
when necessary; L are the ordinary Galloway tubes.
It will be seen that the pipes G being directly over the fires afford a
considerable amount of heating surface as well as increased facilities for
complete circulation of the water, and can be cleaned without the
necessity of running the boiler off.
In witness whereof, I, the said John Wilson, have hereunto set
my hand and seal, this Second day of April, in the year of
our Lord One thousand eight hundred and seventy-five.
Witness,
J. W. TASKER,
Patent Agent,
Halifax.
JOHN X WILSON. (L.S.)
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