IMPROVEMENTS IN APPARATUS FOR HEATING FEED WATER
Year: 1869

page_text: LETTERS PATENT to William Foulds, of Paisley, in the County of
Renfrew, North Britain, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR HEATING FEED WATER." A communication from
abroad by William B. Mack, residing at Detroit, Michigan, United
States.
Sealed the 17th May 1870, and dated the 17th December 1869.
PROVISIONAL SPECIFICATION left by the sad William Foulds at the
Office of the Commissioners of Patents, with his Petition, on the
17th December 1869.
I, WILLIAM FOULDS, of Paisley, in the County of Renfrew, North
Britain, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN APPARATUS FOR HEATING FEED WATER," (a communication
to me from abroad by William B. Mack, residing at Detroit, Michigan,
United States,) to be as follows:-
This invention has for its object the contriving of apparatus for
heating feed water by means of steam in an economical and convenient
manner, and without the objectionable noise which accompanies ordinary
apparatus for a similar purpose.

page_text: The improved apparatus is in the form of a cone, which can be coupled
at each end into the line of piping through which the water has to pass,
whilst a branch pipe for admitting the steam is screwed into the side of
the wider end of the cone. Within the cone or outer conical shell,
which may be of cast iron, there is an inner cone, which is corrugated
longitudinally, and which is by preference made of thin copper. The
water passes through the inner cone, whilst the steam flows outside of
it, the two uniting at the small open end of the inner cone. The
gradual contraction of the interior of the outer shell due to its conical
form is continued a little beyond the end of the inner cone, and the bore
then expands again to the full bore of the piping. The steam in flowing
along the outer space gradually communicates its heat through the
inner copper cone to the water, and finally unites with it without
violence. A common conical valve opening towards the narrow end of
the cones is arranged in the central water inlet to prevent the steam
from forcing back the water should it ever tend to do so from excess of
pressure or quantity.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Foulds in the Great Seal Patent Office
on the 16th June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
FOULDS, of Paisley, in the County of Renfrew, North Britain, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of December, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Foulds, Her special licence
that I, the said William Foulds, my executors, administrators, and
assigns, or such others as I, the said William Foulds; 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

page_text: APPARATUS FOR HEATING FEED WATER," (a communication to me from
abroad by William B. Mack, residing in Detroit, Michigan, United
States,) upon the condition (amongst others) that I, the said William
Foulds, 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 William Foulds, do hereby declare
the nature of the said Invention, and in what manner the same is to
he performed, to be particularly described and ascertained in and by the
following statement in writing, reference being had to the accompanying
Drawings, that is to say:-
The said Invention has for its object the contriving of apparatus for
heating feed water by means of steam in an economical and convenient
manner, and without the objectionable noise which accompanies ordinary
apparatus for a similar purpose.
And in order that the said Invention and the manner of performing
the same may be properly understood I have hereunto appended a Sheet
of explanatory Drawings, to he herein-after referred to, and representing
an external view and a section of a modification of the improved
apparatus.
The improved water heating apparatus is represented as constructed in
three pieces; one of these marked A, and which may be termed the base
piece, is a casting formed with a central tube B screwed externally at
its outer projecting end to admit of the water supply pipe being coupled
to it. An internal annular space C is formed round the water tube B,
and a
tapped hole D at one side is provided for the connection of the
steam pipe. A cone or conical shell E is screwed by its wider end
upon the outer rim of the base piece A, and has its other end screwed
for connection with the pipe by which the heated. water is to be led
Within the cone E there is an inner cone C, which is corrugated
longitudinally, and which the Inventor prefers to make of thin copper.
The water from the tube B passes through the inner cone G, whilst the
steam flows along the outside of it, the two uniting at the small open
end of the inner cone. A cylindrical or slightly tapered ring H is fixed
on the point of the inner cone and serves to strengthen that cone, and
away.

page_text: also to reduce the space for the passage of the steam. The gradual
contraction of the interior of the outer shell E due to its conical form
is continued a little beyond the end of the inner cone G, and the bore
then expands again to the full bore of the piping. The steam in flowing
along the outer space between the two cones gradually communicates
its heat through the inner copper cone to the water, and finally unites
with it without violence at the small end. A common conical valve J
opening towards the narrow end of the cones is arranged at the large
end of the inner cone G, and controlling the water inlet B to prevent
the steam from forcing back the water should it ever tend to do so from
excess of pressure or quantity.
Having thus particularly. described the said Invention, and the manner
in which the same is to be performed, I have to state that the Inventor
does not restrict himself to the precise details herein-described or
delineated; but that what I believe to be novel and original, and claim
as the Invention secured to me by the herein-before in part recited
Letters Patent is, the constructing and combining of the parts of
apparatus for heating feed water by means of steam, substantially in the
improved manner herein-before described.
".
In witness whereof, I, the said William Foulds, have hereunto set
my hand and seal, this. Fifteenth day of June, in the year of
our Lord One thousand eight hundred and seventy.
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
WM. FOULDS. (L.S.)