IMPROVEMENTS IN MULTITUBULAR HOT- WATER BOILERS
Year: 1865

page_text: LETTERS PATENT to Henry Ormson, of Chelsea, in the County of
Middlesex, for the Invention of "IMPROVEMENTS IN MULTITUBULAR HOT-
WATER BOILERS."
Sealed the 12th December 1865, and dated the 14th June 1865.
PROVISIONAL SPECIFICATION left by the said Henry Ormson at the
Office of the Commissioners of Patents, with his Petition, on the 14th
June 1865.
I. HENRY ORMSON, of Chelsea, in the County of Middlesex, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN MULTITUBULAR HOT-WATER
BOILERS," to be as follows:-
My Invention consists in certain mechanical arrangements so disposed as to
add largely to the beating surface, and consequently to the efficiency and
economy of the boiler. I propose to accomplish this in the following
manner-I have a chamber or case of iron or other suitable metal formed
of plates of such metal, either welded or rivetted together, or cast in one or
more pieces, and so placed in the upper portion of the water space of the
boiler as to be surrounded with water when the boiler is in operation. The
said chamber or case may extend the full length of the boiler or only a portion
thereof, as may be found advisable. It is supported in position and also
connected with the furnace by numerous metal flue tubes, welded or otherwise
securely attached to the bottom of the boiler, and to the bottom of the afore:
mentioned case or chamber. The said case or chamber is also connected
with the external flue surrounding the boiler by similar flue tubes. By these

page_text: arrangements the fire and heated air are drawn from the furnace up the first-
mentioned flue tubes into the case or chamber, and pass off into the external
flue surrounding the boiler by the flue tubes last mentioned. In order further
to extract the remaining effects of the heated air I place a fire-brick casing
between the top of the boiler and the chimney, and cause the heated air to
pass off by holes or apertures made therein, say two or three, whereby the
heated air is drawn over the top of the boiler to the apertures, and thence to
the chimney. The boiler may be of quadrangular shape, or of any other
suitable form, the details of construction being altered as required. If desirable,
the sides of the boiler may be extended down so as to form an enclosed fire
space, and flue tubes fixed therein in an horizontal, transverse, or other suitable
position, by which means further heating surface is obtained.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Ormson in the Great Seal Patent Office on the
13th December 1865.
°
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
ORMSON, of Chelsea, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of June, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of. Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Henry Ormson, Her special licence that I, the said Henry Ormson,
my executors, administrators, and assigns, or such others as I, the said Henry
Ormson, 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 MULTITUBULAR
HOT-WATER BOILERS," upon the condition (amongst others) that I, the said Henry
Ormson, 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 Henry Ormson, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the following
statement:
My Invention consists in certain mechanical arrangements so disposed as
to add largely to the heating surface and consequently to the efficiency and
economy of the boiler.
I propose to accomplish this. in the following.
manner: I have a chamber or case of iron or other suitable metal formed
of plates of such metal, either welded or revitted together, or cast in one or
more pieces, and so placed in the upper portion of the water space of the
boiler as to be surrounded with water when the boiler is in operation. The
said chamber or case may extend the full length of the boiler or only a portion
thereof, as may be found advisable. It is supported in 'position' and also
connected with the furnace by numerous metal flue tubes, or otherwise
securely attached to the bottom of the boiler. The said case or chamber is
also connected with the external flue surrounding the boiler by similar flue
tubes. By these arrangements the fire and heated air are drawn from the
furnace up the first-mentioned flue tubes into the case or chamber, and pass
off into the external flue surrounding the boiler by the flue tubes last
mentioned. In order further to extract the remaining effects of the heated
air I place a fire-brick casing between the top of the boiler and the chimney,
and cause the heated air to pass off by the holes or apertures made therein,
say two or three, whereby the heated air is drawn over the top of the boiler
to the apertures, and thence to the chimney. The boiler may be of quad-
rangular shape, or of any other suitable form, the details of construction be
altered as required. If desirable, the sides of the boiler may be extended
down so as to form an enclosed fire space and flue tubes fixed therein in any
horizontal, transverse, or other suitable position, by which means further
heating surface is obtained.
In order to explain my Invention more particularly, and show the manner
in which I carry out the same, I shall proceed to describe it more minutely,
and by the accompanying-Drawing illustrate. its practical operation.. When
reference is made to the Drawing it is done by letters and figures, the same
letters or figures denoting similar parts.
The object of my Invention being to construct a, multitubular hot-water
boiler capable of rapidly heating and immense quantity of water, and which
should thereby be specially adapted for conservatories; hot. houses, and similar
purposes where hot water is required, I insert a number of upright tubes
leading directly from the fire into a chamber situated near the top; from this
chamber the smoke and hot air are carried out at the side of the said: chamber
by another set of tubes-(a double row may be used); whence they are con-

page_text: ducted round the top of the boiler by a fire-brick flue, and out by the chimney,
The tubes referred to may be made of copper, but this is not necessary, as
wrought-iron tubes may be made.
On the accompanying Sheet of Drawings, made to a scale of three inches
to a foot, Fig. 1 represents a sectional plan of a boiler constructed according
to this my Specification; Fig. 2 is a longitudinal section, and Fig. 3 a section
taken at right angles to Figs. 1 and 2.
Throughout the Figures A, A, denotes the external shell of the boiler,
composed of wrought iron, and rivetted together in the usual way, as shewn.
K, K, &c., are the upright tubes leading directly from the fire-place, which is
under the boiler to the internal chamber B (Figs. 2 and 3). The position,
relative dimensions, and number of these tubes are shown in Figs. 1, 2, and 3.
C; C, &c,, 'are the tubes leading from the chamber B into the external fire-
brick flue or casing surrounding the boiler; these are made and fitted in a
manner similar to the upright tubes already referred to. D, E, are return
pipes, and F and G, discharge or flow pipes; H is a manhole; and I, I, &c.,
stay bolts,
Having now fully described and illustrated the nature and object of my
said Invention, I wish it to be understood that I do not confine myself to the
precise forms, dimensions, or details herein-before described and illustrated,
and that I am well aware that upright flue tubes have been already used in
the manufacture of hot-water boilers, but what I claim as my Invention, to be
protected by Her Majesty's Letters Patent is, the combination of the chamber
marked B with the upright flue tubes marked K, K, &c., and the horizontal
tubes marked C, C, &c., in the Drawing accompanying this Specification,
whereby the smoke and hot air are carried away without having any regard to
the position or direction in which such chamber or tubes are placed.
In witness whereof, I, tho said Henry Ormson, have hereunto set my
hand and seal, this Eleventh day of December, in the year of our
Lord One thousand eight hundred and sixty-five.
Witness,
CHARLES S. BAKER,
Genl. Patent Co., Limited,
71, Fleet Street, Agents,
HENRY ORMSON, (L.S.)