IMPROVE- MENTS IN APPARATUS APPLICABLE TO BOILERS FOR HEATING WATER FOR GENERATING STRAM
Year: 1873

page_text: LETTERS PATENT to John Sibert, of the Town and County of the
Town of Nottingham, Engineer, for the Invention of "IMPROVE-
MENTS IN APPARATUS APPLICABLE TO BOILERS FOR HEATING WATER FOR
GENERATING STRAM."
Sealed the 27th January 1874, and dated the 1st August 1878.
PROVISIONAL SPECIFICATION left by the said John Sibert at the
Office of the Commissioners of Patents, with his Petition, on the
1st August 1878.
I, JOHN SIBERT, of the Town and County of the Town of Nottingham,
Engineer, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN APPARATUS APPLICABLE TO BOILERS FOR HEATING WATER FOR
GENERATING STEAM," to be as follows:→
My improvements are applicable to Cornish and other boilers, and
consists in placing within the flue or flues of each boiler a corrugated
> tube or tubes, each tube being the length of the boiler; one end of each
tube passes through the framing of the fire-door in front, and is con-
nected to a tube which passes into the boiler below the water løvel near

page_text: the end of the corrugated tube, and attached to it is a capped valve or
stop-cock; the other end of each tube is connected to a similar valve or
stop-cock, and is also connected to a tube which passes into the boiler
and dips below the water level; thus I am enabled to introduce a
reducing solution into each corrugated tube to loosen any incrustation &
which may take place, and blow out the same or pass such solution into
the boiler at pleasure; a safety valve is provided to each tube to indicate
when the valves are closed.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Sibert in the Great Seal Patent Office.
on the 30th January 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SIBERT, of the Town and County of the Town of Nottingham, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of August, in the year of our Lord
One thousand eight hundred and seventy-three, in the thirty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said John Sibert, Her special licence that I, the
said John Sibert, my executors, administrators, and assigns, or such
others as I, the said John Sibert, 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 “IMPROVEMENTS IN APPARATUS APPLICABLE TO
BOLLERS FOR HEATING WATER FOR GENERATING STEAK," upon the condition
(amongst others) that I, the said John Sibert, my executors or
administrators, by an instrument in writing under my, or their, or
.one of their hands and seals, should particularly describe and ascer-
tain 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,

page_text: NOW: KNOW YE, that I, the said John Sibert, 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 accompanying Drawings.
forming a part of this Specification:-
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=
•
My improvements are applicable to Cornish and other-boilers, and
consists in placing within the flue or flues of each boiler-a corrugated
tube or tubes, each tabe being the length of the boiler; one end of each
tube passes through the framing of the fire-door in front, and is con-
nected to a tube which passes into the boiler below the water level near
the end of the corrugated tube, and attached to it is a capped valve or
stop-cock; the other end of each tube is connected to a similar valve or
stop-cock, and is also connected to a tube which passes into the boiler
and dips below the water level; thus I am enabled to introduce a
reducing solution into each corrugated tube to loosen any incrustation
which may take place; and blow out the same or pass' such solution into
the boiler at pleasure; a safety valve is provided to each tube to indicate
-*-
Figure 1 represents a vertical section through the fire-bars of a double
flued boiler with my improved apparatus applied to each flue; Figure 2
is a longitudinal section; and Figure 3 shews in plan one of the corru-
gated tubes attached to a vertical tube hereafter referred to.
In the arrangement shewn by the Drawings when applied to a long
interior flued boiler I employ two corrugated tubes A, A, one end of
each tube being secured at or near the upper end of a vertical oval
tube B, closed at the top and open at the bottom, which is bolted to the
bottom of the interior flue, which has a hole cut in it the size of the
open end of the tube B. The other ends of the tubes A, A, pass through
and are secured in holes cut in the top of the flue below the water level
at O, O, or the tubes may be provided of such length as to pass beyond
the ends of the boiler and be returned and passed through the ends of
the boiler below the water line, and one or both such projecting ends of
the tubes may be provided with a capped valve or stop-cock so as to
allow of the introduction of a reducing solution into each corrugated
tube to loosen any incrustation which may take place, and blow out the

page_text: same, or to pass such solution into the boiler at pleasure; such apparatus
is equally applicable to every description of boiler.
By the employment of improved apparatus as above described, in
consequence of the constant circulation produced, the whole of the water
in the boiler is kept at a more uniform temperature, thereby equalizing
the expansion and contraction of the boiler plates and avoiding the
leakage at the joints heretofore experienced, and the smoke being baffled
by the coils of the pipe or pipes is entirely consumed, thereby effecting a
considerable saving in the fuel employed.
Having thus fully described my said Invention, and the manner of 1
performing the same, I wish it understood that I claim, the corrugated
tube or tubes as above shewn and described.
In witness whereof, I, the said John Sibert, have hereunto set my
hand and seal, this Twenty-ninth day of January, in the year
of our Lord, One thousand eight hundred and seventy-four.
Witness,
H. W. GOUGH, O.E.,
Nottingham.
JOHN SIBERT. (L.S.)