CERTAIN IMPROVEMENTS IN BOILERS FOR GENERATING STEAM
Year: 1856

page_text: LETTERS PATENT to John Brayshay, of Cinderhill, Ringley Bridge, near
Bolton-le-Moors, in the County of Lancashire, for the Invention of
"CERTAIN IMPROVEMENTS IN BOILERS FOR GENERATING STEAM."
Sealed the 2nd January 1857, and dated the 23rd July 1856.
PROVISIONAL SPECIFICATION left by the said John Brayshay at the
Office of the Commissioners of Patents, with his Petition, on the
23rd July 1856.
I, JOHN BRAYSHAY, of Cinderhill, Ringley Bridge, near Bolton-le-Moors,
in the County of Lancashire, do hereby declare the nature of the said Inven-
tion for "CERTAIN IMPROVEMENTS IN BOLLERS FOR GENERATING STEAM," to be as
follows:-
This Invention consists in arranging two or more rows of small cylindrical
or other shaped vessels one above the other, and connected by pipes, necks,
or otherwise, so that the water and steam may circulate from one vessel to the
other, and in conveying the flues between and around the rows of cylindrical
or other shaped vessels, so that the products of combustion from the fire grate
may be more advantageously applied and distributed than in the steam
generators at present in use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Brayshay in the Great Seal Patent Office on the
23rd January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BRAYSHAY, of Cinderhill, Ringley Bridge, near Bolton-le-Moors, in the County
of Lancaster, send greeting."
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of July, in the year of our Lord One
thousand eight hundred and fifty-six, in the twentieth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said John
Brayshay, Her special license that I, the said John Brayshay, my executors,
administrators, and assigns, or such others as I, the said John Brayshay, 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 "CERTAIN IMPROVEMENTS IN BOILERS FOR
GENERATING STEAM," upon the condition (amongst others) that I, the said. John
Brayshay, 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 John Brayshay, 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 state-
ment, that is to say:-
The nature of my said Invention, of certain improvements in boilers for
generating steam, consists in arranging two or more rows of small cylindrical
or other shaped vessels one above the other, and connected by pipes, necks, or
otherwise, so that the water and steam may circulate from one vessel to the
other, and in conveying the flues between and around the rows of cylindrical
or other shaped vessels, so that the products of combustion from the fire grate
may be more advantageously applied and distributed than in steam generators
at present in use.
In order that my Invention may be fully understood and readily carried
into effect, I will proceed to describe the means pursued by me, reference

page_text: being bad to the accompanying Drawing, and to the letters and figures marked
thereon.
Figure 1 is a transverse section of a boiler for generating steam constructed
according to my improvements, and Figure 2 is a longitudinal section of the.
same. a, a, a, are three cylindrical vessels, forming the upper row; these
vessels are connected by the pipes a' to the three cylindrical vessels b, b, b,
forming the centre row, and these vessels are connected by the pipes b' to the
three cylindrical vessels c, c, c, forming the lower row of the boiler for gene-*
rating steam; d is the fire grate, and e, e, the brickwork, or seating of the
boiler. The boiler is supported by the brick pillars e', and the beam e² in
front, or in any other convenient manner. The products of combustion from
the fire grated pass along the flues formed by the rows of vessels a, b, and c,
and by the brickwork at each side of them, as indicated by the arrows in
Figure 2. The water to be evaporated is supplied to the three vessels c, by
the pipe e, and the steam is conveyed away by the pipe f. On referring to
Figure 1, it will be seen that the vessels a are intended to contain steam, and
the vessels b and c are entirely filled with water; it is however evident that
the upper vessels a may contain partly water and partly steam.
Each set, of
vessels above one another, marked a, b, and c, is independent of the other sets,
excepting the communications formed by the feed pipe and steam pipes; the
boiler is therefore easily repaired, as one set can be removed without displacing
the others. Lateral communications may be made between the vessels, if
preferred.
I wish to remark, that the boiler, above described, and shewn in the
accompanying Drawing, is only given as an illustration of the mode of per-
forming my Invention; many variations may be made in the number and
shape of the vessels for containing the water and steam, and in the number of
rows in which they are arranged. The cylindrical, or other vessels of which
the boiler is composed, or any portion of them, instead of being single, as
shewn, may be made with internal tubes or flues, so as to obtain a larger
amount of heating surface. The cylindrical or other shaped vessels, instead
of being all placed in the same direction as shewn in the Drawing, may be so
placed that some of the vessels are at right angles to the others. The necks
or pipes for connecting the cylindrical or other shaped vessels of which the
boiler is composed, may be so placed and arranged that the current of water
and steam shall be produced in any required direction. In adapting this
improved boiler for marine purposes, a fire box, or fire boxes will have to be
employed, and internal flues will have to be used in the cylindrical vessels, the
fire box or fire boxes being connected to the lower row of vessels. If the

page_text: boiler is provided with a water casing the fire may be applied in the ordinary
manner.
Having thus described the nature and particulars of my Invention, I wish
it to be understood that I do not limit myself to the precise arrangements of
the parts shewn and described, of which my improvements in boilers for gene-
rating steam are composed; but what I do claim is, arranging two or more rows
of small cylindrical or other shaped vessels one above the other, in the manner
described, or any modification of the same.
In witness whereof, I, the said John Brayshay, have hereunto set my
hand and seal, this Twenty-first day of January, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
H. B. BARLOW,
Manchester.
JOHN BRAYSHAY. (L.B.)