IMPROVEMENTS IN STEAM BOILERS
Year: 1872

page_text: LETTERS PATENT to Richard Hanson, of Halifax, in the County of
York, Engineer, and Joseph Norton, of the same Place, Boiler
"
PROVISIONAL SPECIFICATION left by the said Richard Hanson and
Joseph Norton at the Office of the Commissioners of Patents, with.
their Petition, on the 30th November 1872.
We, RICHARD HANSON, of Halifax, in the County of York, Engineer,
and JOSEPH NORTON, of the same Place, Boiler Maker, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN STEAM BOILERS," to
be as follows:-
This Invention relates to the classes of boilers commonly called "fire-
box" boilers and "tubular" boilers, and the more especially to "multi-
tubular" boilers, or those wherein are a series of small horizontal tubes.
for the heat to pass through, and to those known as Galloway's
boilers, in which are a series of conical tubes placed either horizontally
or obliquely across the fire-box or the flue in continuation therewith,
56
"

page_text: connecting the two opposite sides and forming passages for the circula-
tion of the water.
Now our improvements consist in combining the two kinds, the
"multitubular" with the "Galloway," in one boiler; thus we employ
the cross tubes immediately behind the fire-box or fire-boxes and the
small horizontal tubes behind them. These horizontal tubes are, how-
ever, much shorter than usual, rendering them less liable to become
leaky by irregular expansion and contraction and more convenient to
clanse. By this combination a larger quantity of water will be
evaporated by a given quantity of fuel.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Richard Hanson and Joseph Norton in the Great
Seal Patent Office on the 30th May 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RICHARD
HANSON, of Halifax, in the County of York, Engineer, and JOSEPH
NORTON, of the same Place, Boiler Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of November, in the year of our
Lord One thousand eight hundred and seventy-two, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Richard Hanson and Joseph Norton Her special
licence that we, the said Richard Hanson and Joseph Norton, our execu-
tors, administrators, and assigns, or such others as we, the said Richard
Hanson and Joseph Norton, our 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 King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN STEAM BOILERS," upon the
condition (amongst others) that we, the said Richard Hanson and Joseph
Norton, our executors or administrators, by an instrument in writing
under our 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

page_text: 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 we, the said Richard Hanson and Joseph
Norton, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement and accompanying Sheet
of Drawings, that is to
say:
This Invention relates to the classes of boilers commonly called " fire-
box " boilers and "tubular" boilers, and the more especially to "multi-
tubular" boilers, or those wherein are a series of small horizontal tubes.
for the heat to pass through, and to those known as Galloway's "
boilers, in which are a series of conical tubes placed either vertically,
horizontally, or obliquely across the fire-box or the flue in continuation
therewith, connecting the two opposite sides and forming passages for
the circulation of the water.
Now our improvements consist in combining the two kinds, the
* multitubular" with the " Galloway," in one boiler; thus we employ
the cross tubes immediately behind the fire-box or fire-boxes and the
small horizontal tubes behind them. These horizontal tubes are, how-
ever, much shorter than usual, rendering them less liable to become
leaky by irregular expansion and contraction and more convenient to
cleanse. By this combination a larger quantity of water will be
evaporated by a given quantity of fuel.
In order that the Invention may be clearly understood we have here-
unto annexed a Sheet of Drawings of a boiler constructed according
thereto figured and marked with letters of reference, the same letter
referring to the same part in each Figure.
Fig. 1 is a longitudinal and vertical section, Fig. 2 a longitudinal
and horizontal section, Fig. 3 a cross section taken through the line
A, B, and Fig. 4. is another cross section taken through the line C, D, in
the former Figures. E are the "Galloway," or conical tubes, and G are
the series of small horizontal tubes. H are two ordinary fire-boxes or
furnaces connected with one oval flue I, in which the conical tubes are
placed, the said flue I being also in communication with the small
horizontal tubes G.

page_text: It will now be seen that the whole of these tubes and fire-boxes are
surrounded with water, and that the heat, or the products of combustion,
will
pass from the fire-boxes or furnaces through the oval tube in contact
with the conical tubes in the usual manner, thence through the small
tubes, from which they are conducted, and pass through the side flues J
to the chimney as heretofore. By thus combining and arranging these
different classes of boilers, in one boiler we obtain a larger amount of
heating or steam generating surface, and consequently a greater amount
of evaporation of water by a given quantity of fuel.
Having thus fully described the nature of our said Invention, and
shewn by Drawings in what manner the same is performed or carried
into practical operation, we would have it understood that we do not
confine ourselves to the precise details of construction herein described
and shewn by the Drawings, nor do we claim any of the parts separately
considered, but what we claim as our Invention is the combining of
these different classes of boilers in one.
In witness whereof, I, the said Richard Hanson, for and on behalf
of myself and the said Joseph Norton, have hereunto set my
hand and seal, this Twenty-eighth day of May, in the year of
our Lord, One thousand eight hundred and seventy-three.
Witness,
J. W. TASKER,
Clerk to Tasker & Brierley,
Patent Agents,
Halifax & Bradford.
RICHARD HANSON. (L.S.)