IMPROVEMENTS IN APPARATUS FOR PREVENTING THE INCRUSTATION AND THE ACCUMULATION OF SEDIMENT IN STEAM BOILERS
Year: 1868

page_text: LETTERS PATENT to Henry Bernoulli Barlow, of the City of
Manchester, Patent Agent, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR PREVENTING THE INCRUSTATION AND THE ACCUMULATION
OF SEDIMENT IN STEAM BOILERS."-A communication from abroad by
Carl Forster, junior, of Augsburg, in the Kingdom of Bavaria.
Sealed the 28th October 1868, and dated the 13th May 1868.
PROVISIONAL SPECIFICATION left by the said Henry Bernoulli
Barlow at the Office of the Commissioners of Patents, with his
Petition, on the 13th May 1868.
I, HENRY BERNOULLI BARLOW, of the City of Manchester, Patent
Agent, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN APPARATUS FOR PREVENTING THE INCRUSTATION AND THE ACCUMULATION
OF SEDIMENT IN STEAM BOILERS," a communication to me from abroad by

page_text: Carl Forster, junior, of Augsburg, in the Kingdom of Bavaria, to be as
follows:-
My Invention consists in placing a vessel in the steam boiler; this
vessel is placed below the level of the water, and the top of the vessel
is partially closed by a wire grid or perforated plate. When the water
in the boiler is in a state of ebullition the particles held in suspension
in the water and which would form the sediment or incrustation are
set in motion by the boiling water, and pass through the perforated lid
into the vessel, from whence they are discharged when required by a
blow-off pipe provided with a stop-cock. This apparatus may be
applied to every description of steam boiler, and will be found of
the greatest utility, as the sediment being constantly removed from
the water entirely prevents incrustation, consequently the danger
arising from the burning of the bottom plates and the loss of power
caused by the non-conducting nature of the sediment or incrustation
are avoided.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Bernoulli Barlow in the Great Seal Patent
Office on the 10th November 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
BERNOULLI BARLOW, of the City of Manchester, Patent Agent, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of May, in the year of
our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Henry Bernoulli Barlow, Her special
license that I, the said Henry Bernoulli Barlow, my executors,
administrators, and assigns, or such others as I, the said Henry
Bernoulli Barlow, 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

page_text: for "IMPROVEMENTS IN APPARATUS FOR PREVENTING THE INCRUSTATION AND THE
ACCUMULATION OF SEDIMENT IN STEAM BOILERS," being a communication to
me from abroad by Carl Forster, junior, of Augsburg, in the Kingdom
of Bavaria, upon the condition (amongst others) that I, the said
Henry Bernoulli Barlow, my executors or administrators, by an instru-
ment 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 Henry Bernoulli Barlow, do
hereby declare the nature of the 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 consists in placing a vessel in the steam boiler; this
vessel is placed below the level of the water, and the top of the vessel
is partially closed by a wire grid or perforated plate. When the water
in the boiler is in a state of ebullition the particles held in suspension
in the water and which would form the sediment or incrustation are
set in motion by the boiling water, and pass through the perforated lid
into the vessel, from whence they are discharged when required by a
blow-off pipe provided with a stop-cock. This apparatus may be applied
to every description of steam boiler, and will be found of the greatest
utility, as the sediment being constantly removed from the water entirely
prevents incrustation, consequently the danger arising from the burning
of the bottom plates and the loss of power caused by the non-conducting
nature of the sediment or incrustation are avoided.
And in order that this Invention may be fully understood and readily
carried into operation I will proceed to describe the accompanying
Sheet of Drawings, reference being had to the figures and letters
marked thereon.
Figure 1 represents a sectional elevation of an ordinary cylindrical
boiler without flues, to which this improved apparatus is applied; Figures
2 and 3 are detached views of the apparatus drawn to an enlarged scale.
a is the vessel in which the particles held in suspension in the
water are collected; this vessel is by preference of cylindro-conical

page_text: form, and it is suspended a little below the level of the water in the
boiler by the pipe b, the upper flange of which is secured to the
standard c bolted to the top of the boiler. The position of the vessel a
in the boiler can be regulated by the set washer b' screwed to the pipe b;
the cross bar a¹ which is bolted in the interior of the vessel a rests upon
this set washer b' which can be raised or lowered on the pipe b. The
vessel a is provided with a wire grid or perforated cover a³, shewn best
in Figures 2 and 3, and this grid or cover is made by preference of
three thicknesses of wire net or perforated plates united by wire hoops
and clamps, the object of which is to partially close the vessel a and so
to prevent the particles which accumulate therein from being disturbed
when the water is agitated by ebullition. Above the pipe is the blow-
off cock d, and the blow-off pipe e is connected to the cock d. When
the boiler is at work the particles held in suspension in the water
are collected in the vessel a instead of being deposited as sediment or
incrustation at the bottom and along the sides of the boiler, and when
a sufficient quantity is collected in the vessel a the blow-off cock dis
opened and the pressure of the steam on the water in the boiler causes
the contents of the vessel a to be forced up the pipe through the
cock d and pipe e into the receptacle f. By the use of this apparatus
the danger arising from the burning of the bottom plates of the boiler
and the loss of power caused by the non-conducting nature of the
sediment or incrustation are avoided.
Figure 4 is a longitudinal section, and Figure 5 a transverse section of
a cylindrical boiler with a single flue to which the improved apparatus
is applied. The vessel a is made of a suitable form so as to be adapted to
the space between the flue and shell of the boiler, and it is secured to
the shell by the stay g, or in any other convenient manner according to
the shape of the boiler. The blow-off pipe b is connected to the lower
part of the vessel a, and the blow-off cock d is secured to the end of the
pipe b. The vessel a is provided with a cover a² similar to the one above
described.
Figure 6 is a transverse section of an ordinary two-flued boiler to
which the improved apparatus is applied. This apparatus is precisely
similar to that shewn and described in reference to Figures 1, 2, and 3.
Having thus stated the nature of the Invention, and described the
manner of performing the same as communicated to me by the within-

page_text: named Carl Forster, junior, I declare that I claim, the improved
apparatus described and shewn in the Drawings, consisting of a vessel
with a wire net or perforated cover, and with a discharge pipe when
used for collecting and removing the sediment in steam boilers.
In witness whereof, I, the said Henry Bernoulli Barlow, have
hereto set my hand and seal, this Ninth day of November
One thousand cight hundred and sixty-eight.
H. B. BARLOW. (L.S.)