IMPROVEMENTS IN THE MEANS OR APPARATUS EMPLOYED FOR REMOVING AND PREVENTING THE ACCUMULATION OF SooT, DUST, OR OTHER SUBSTANCES THAT MAY ADHERE TO THOSE PARTS OF BOILERS EXPOSED TO THE FLAME OR FLUE OR THE HEATING SURFACE OF BOILERS
Year: 1872

page_text: LETTERS PATENT to Edward Day, of Mirfield, in the County of York,
for the Invention of "IMPROVEMENTS IN THE MEANS OR APPARATUS
EMPLOYED FOR REMOVING AND PREVENTING THE ACCUMULATION OF SooT, DUST,
OR OTHER SUBSTANCES THAT MAY ADHERE TO THOSE PARTS OF BOILERS EXPOSED
TO THE FLAME OR FLUE OR THE HEATING SURFACE OF BOILERS."
Sealed the 18th February 1873, and dated the 31st December 1872.
PROVISIONAL SPECIFICATION left by the said Edward Day at the
Office of the Commissioners of Patents, with his Petition, on the
31st December 1872.
I, EDWARD DAY, of Mirfield, in the County of York, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE MEANS
OR APPARATUS EMPLOYED FOR REMOVING AND PREVENTING THE ACCUMULATION OF
SooT, DUST, OR OTHER SUBSTANCES THAT MAY ADHERE TO THOSE PARTS OF BOILERS
EXPOSED TO THE FLAME OR FLUE OR THE HEATING SURFACE OF BOILERS," to be as
follows:-
The object of my Invention is to remove by mechanical means the
soot, dust, or other substances that may accumulate on those parts of
boilers exposed to the flame or flues, or the heating surface, being
particularly applicable to stationary boilers, and the Invention is as
hereafter described. In each flue I provide one or more scrapers,
metallic brushes or their equivalents, and impart to them a continuous

page_text: or reciprocating motion produced as may be required either by hand or
by some known motive power. These scrapers, metallic brushes, or their
equivalents, are made to move over the heating surface of boilers or
those parts exposed in the flues, either in a continuous or reciprocating
longitudinal direction, or in a continuous or reciprocating radial
direction.
When required to move in a radial direction I mount one or more
shafts in each flue, to which I give a continuous radial or reciprocating
motion. On the shafts I mount any required number of pulleys, and
over these pulleys are passed chains or metallic ropes to which are
attached the scrapers, metallic brushes, or their equivalents. Motion is
given to the shafts and thence to the scrapers, metallic brushes, or their
equivalents, either by hand or by some known motive power.
When the longitudinal instead of the radial motion is preferred, the
scrapers, metallic brushes, or their equivalents, may be fixed and worked
in a similar manner to that herein-before described, or I provide one or
more shafts or rods in each flue to which I attach the scrapers, metallic
brushes, or their equivalents, at requisite intervals from each other.
The required reciprocating or continuous motion may be imparted
than by hand or hv
known motive nower
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Day in the Great Seal Patent Office on
the 30th June 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
DAY, of Mirfield, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of December, in the
year of our Lord One thousand eight hundred and seventy-two, in 'tlie
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Edward Day, Her special licence
that I, the said Edward Day, my executors, administrators, and
¡ assigns, or such others as I, the said Edward Day, my executors, ad-
ministrators, 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

page_text: vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE MEANS OR APPARATUS EMPLOYED FOR REMOVING AND PREVENTING THE
ACCUMULATION OF SOOT, DUST, OR OTHER SUBSTANCES THAT MAY ADHERE TO THOSE
-PARTS OF BOILERS EXPOSED TO THE FLAME OR FLUE OR THE HEATING SURFACE
OF BOILERS," upon the condition (amongst others) that I, the said Edward
Day, 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 Edward Day, 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, and to the letters of reference marked thereon, that is to
say :-
-
The object of my Invention is to remove by mechanical means the
soot, dust, or other substances that may accumulate on those parts of
boilers exposed to the flame or the flues, or the heating surface, being
particularly applicable to stationary boilers, and the Invention is as
hereafter described.
And in order that my Invention may be more completely understood
reference is given to the accompanying two Sheets of. Drawings.
I will first proceed to describe an arrangement whereby I scrape
boilers radially. This arrangement. is shewn on Sheet 1, on which
Figure 1 is a transverse section of flues; and Figure 2 a longitudinal
section of the same. In each flue I provide the scrapers a, b,. and c,
which I attach to the levers d, e, f, on the shafts g, h, i, fitting loosely on
them. These shafts g, h, i, are fitted into bearings as shewn on the
ring j which is made in segments and jointed together as shewn at k.
The upper part of the ring jis provided with a radial rack into which
is made to gear the pinion m carried on the shaft n in suitable bearings in
the brackets o on the boiler. On the brackets o and o³ are also mounted so
as to work freely the runners p, p, for supporting the ring. On the end of
the shaft n is keyed the hand wheel q, through which the required rotary
motion may be transmitted to the shaft, and thence to the pinion and
•

page_text: rack, actuating thereby the scrapers. The scrapers a, b, c, vary in
number and size in accordance with the length of the boiler and plates.
The weights on the levers are employed for keeping the scrapers up to
their work, allowing them at the same time to rise over any rivets they
may come in contact with. Instead of the hand wheel q driving pullies
may be used and the motion imparted from some other suitable motive
power.
I will now proceed to. describe the scrapers arranged so as to move
in a longitudinal direction as shewn on Sheet 2, on which Figure 1
represents a tranverse section of flues; Figure 2 longitudinal section of
the same; Figures 3 and 4 shew the construction of the chain. I
provide the carriage a in each side flue on which is mounted one or
more levers b and c; fitted loosely in their bearings. The carriage is
provided with wheels d arranged so as to run on the rails e; the
extremities of the levers and care coupled by means of the chain f
or its equivalent (a full size view of which is shown at Figs. 3 and 4).
The chain is employed as the scraper, the tendency of the carriage
or traveller is to lean towards the boiler whereby the chain f is brought
in contact therewith. To ensure sufficient pressure against the boiler
when required I provide the weights g.
.
In order to traverse the scrapers I provide a chain pulley h at the
extremities of the side flucs, and the pulley i outside the brickwork in
front, as shewn, over which is passed an endless chain ; which I
couple or connect to the carriage as shewn at k. The outside pulley i
is carried by the bracket 1, and the inside pulley h by a suitable
bracket m; motion may be given to the outer pulley from some suitable
motive power whence motion is transmitted to the carriage carrying the
scrapers.
It will be readily understood that by the traversing of the carriage
the required motion is given to the scrapers; these being traversed along
the boiler the soot and other extraneous matter is removed.
For scraping the bottom of the boiler I provide two carriages n
carrying one or more shafts o, the shafts being provided with the
levers at each end as shewn. The extremities of the levers are con-
nected together by means of a chain of the description shewn at Figs. 3
and 4 or its equivalent. On the opposite end of each lever I provide a
weight q for the purpose of giving the required pressure to the chain

page_text: against the boiler. In order to traverse the scrapers backwards and
forwards I provide a chain pulley r at the extremity of the bottom flue,
and the pulley s outside the brickwork in front as shewn, over which is
passed an endless chain which I couple or connect to the levers as
shown at u.
The outside pulley & is carried by the bracket v, and the
inside pulley by the bracket w; motion may be given to the outer
pulley from some suitable motive power, whence motion is transmitted
to the carriage carrying the scrapers.
The scrapers being carried backwards and forwards along the boiler
the soot or other extraneous matter is removed.
Having now described the nature of my Invention and the
manner in which the same is to be performed, I would remark in
conclusion that I do not limit myself to the exact details and con-
figuration of parts I have shewn and explained as the same may of
course be varied or modified without in any way departing from the
nature and principle of my Invention, what I do claim and desire to be
secured to me by Letters Patent are,—
Firstly. The arrangement, construction, and application of machinery
or apparatus shown on Sheet 1 substantially as and for purposes herein
Secondly. The arrangement, construction, and application of machinery
or apparatus shewn on Sheet 2, substantially as and for purposes herein
set forth.
In witness whereof, I, the said Edward Day, have hereunto set
my hand and seal, this Twenty-eighth day of June, in the year
of our Lord One thousand eight hundred and seventy-three.
Witness,
J. W. HARDING,
Patent Agent,
2, East Parade,
Leeds.
EDWARD DAY. (L.S.)