IMPROVEMENTS IN CLEANSING AND IN FEEDING BOILERS
Year: 1861

page_text: LETTERS PATENT to Henry Attwood, of Wapping Wall, in the. County
of Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN CLEANSING
AND IN FEEDING BOILERS."
Sealed the 21st February 1862, and dated the 26th August 1861.
PROVISIONAL SPECIFICATION left by the said Henry Attwood at the
Office of the Commissioners of Patents, with his Petition, on the 26th
August 1861.
I, HENRY ATTWOOD, of Wapping Wall, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN CLEANSING AND IN FEEDING BOILERS," to be as follows:-
My improvements in cleansing boilers consist in placing one, two, or more
conduits at about the water level; the conduits are dished on their upper surface,
and are perforated at intervals, while curved flanges are adapted to the sides.
Similar conduits are placed at the bottom of the boiler. The cleansing is
effected by raising the water level, so as to just overflow the upper conduit or
conduits when the scum will flow through the perforations into the interior of
the conduits and out through cocks outside the boiler. Any impurities which
may collect at the bottom of the boiler are drawn off through cocks fitted
outside the boiler to the lower conduit or conduits.

page_text: My improvements in feeding boilers consist in supplying them from
below, through perforated pipes, extending along the length or nearly so of
the boilers. This arrangement is for the purpose of keeping the sediment
in a state of agitation, thereby causing tho impurities contained in the
water to rise to the surface, when it may be drawn off by the scum plate and
cock.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by tho said Henry Attwood in the Great Seal Patont Oflice on the
26th February 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
ATTWOOD, of Wapping Wall, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victorin, by Her Letters
Patent, bearing date the Twenty-sixth day of August, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, tho said Henry Attwood, Her special licence that I, the said
Henry Attwood, my executors, administrators, and assigns, or such others
as I, the said Henry Attwood, 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 CLEANSING AND IN FEEDING BOILERS," upon the condition
(amongst others) that I, the said Henry Attwood, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describo and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and causo
the same to be filed in the Great Seal Patent Office within six calendár
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Attwood, do hereby declaro
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 follow-
ing statement thereof, reference being had to the Drawings hereunto annexed,
that is to say:-

page_text: My improvements in cleansing boilers consist in placing one, two, or more
conduits at about the water level; the conduits are dished on their upper sur-
face, and are perforated at intervals, while curved flanges are adapted to the
sides. Similar conduits are placed at the bottom of the boiler.
My improvements in feeding boilers consist in supplying them from below
through perforated pipes extending along the length, or nearly so, of the
boilers. This arrangement is for the purpose of keeping the sediment in a
state of agitation, thereby causing the impurities contained in the water to
rise to the surface, when it may be drawn off by the scum plate and cock.
For some waters I find it advantageous to use some chemical agents, together
with my mechanical appliances. The chemical agents may vary according to
the qualities of the waters.
Figure 1 of the accompanying Drawings is a longitudinal, Figure 2 a hori-
zontal, and Figure 3 a vertical, section of a boiler fitted with conduits according
to my Invention for cleansing and feeding the same. a is the furnace; b is
the boiler; c, c, are the conduits suspended in the boiler by rods d, d; a portion
of one of the conduits is shown in plan on an enlarged scale at Figure 4, and
in vertical section at Figure 5, through the line x, y, of Figure 4. These
conduits carry at intervals cups e, e, perforated or made with a single aperture
at bottom, as seen clearly at Figures 4 and 5; they extend along the boilers,
as seen at Figure 2, and are in connection with a pipe f, leading outside the
boilers; g is a blow-off cock on the pipe f; h, h, are conduits at the bottom of
the boiler. The cleansing is effected by raising the water level so as to just over-
flow the cups e, e, on the upper conduits c, c, when the scum will flow through
the perforations into the interior of the conduits, and out through the cock g
outside the boilers. The impurities which may collect at the bottom of the boiler
are drawn off through a cock or cocks fitted outside the boiler to the lower
conduits h, h. It is through these latter conduits that water may be supplied
to the boiler, or it may be admitted in the ordinary manner.
Figure 6 is a perspective view, and Figure 7 a vertical section, of another
form of conduit I sometimes prefer to employ. The conduit is dished, and
the sides are curved as shown at i, i, Figure 7; k, k, show the perforations on
the dished surface. Similar conduits are fitted to the bottom of the boiler as
well as to the top thereof, both of which act in a similar manner to those
previously described.
•
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my "Improve-
ments in Cleansing and in Feeding Boilers," the employment of conduits

page_text: constructed and acting substantially in manner and for the purposes herein-
before described and illustrated in the accompanying Drawings.
In witness whereof, I, the said Henry Attwood, havo hereunto set my
hand and seal, this Twenty-sixth day of February, One thousand eight
hundred and sixty-two.
HENRY ATTWOOD. (L.B.)