IMPROVEMENTS 'IN APPARATUS FOR HEATING THE FEED WATER OF STEAM BOILERS
Year: 1877

page_text: LETTERS PATENT to Thomas Jones, of Fallowfield, Manchester, in the County
of Lancaster, Hot Water Engineer, for the Invention of "IMPROVEMENTS 'IN
APPARATUS FOR HEATING THE FEED WATER OF STEAM BOILERS."
Sealed the 8th February 1878, and dated the 10th August 1877.
PROVISIONAL SPECIFICATION left by the said Thomas Jones at the Office of
the Commissioners of Patents on the 10th August 1877.
THOMAS JONES, of Fallowfield, Manchester, in the County of Lancaster, Hot
Water Engineer. "IMPROVEMENTS IN APPARATUS FOR HEATING THE FEED WATER
OF STEAM BOILERS."
My Invention consists in an arrangement whereby heated water is fed to steain
boilers without the presence of steam pressure, and this I effect by causing the
products of combustion as they pass to or along the flue or flues to act upon a
vessel supplied with water, by which means the water becomes heated, and then
circulated. Passing from the said vessel is a pipe extending upward; its other end
being connected to a second, but open, vessel, from which, and at its lower end,
another pipe proceeds downward, and is adapted to the first-mentioned vessel. By
these means a constant circulation of hot water is obtained, which may be pumped
as required into the boiler. I propose to place the vessel in which the water is
heated at the end of the main flue or flues, and to form it as a box, but with a
water space around it, between the sides of which tubes may be adapted. The
return pipe of the upper vessel projects a certain distance therein to allow sediment
around it.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Jones in the Great Seal Patent Office on the 9th February
1878.
THOMAS JONES, of Fallowfield, Manchester, in the County of Lancaster, Hot
Water Engineer.
IMPROVEMENTS IN APPARATUS FOR HEATING THE FEED WATER
OF STEAM BOILERS."
ss
My Invention consists in an arrangement whereby heated water is fed to steam
boilers without the presence of steam pressure, and this I effect by causing the
products of combustion as they pass to or along the flue or flues to act upon a
vessel supplied with water, by which means the water becomes heated, and is then
circulated.
In the accompanying Drawing I have shewn how my Invention may be carried
out under four different modifications of boiler arrangement, but other variations
may be adopted, as will hereafter appear.
Fig. 1 shews a portion of an ordinary two flued boiler in vertical section
with my Invention adapted; Fig. 2 is a cross section thereof; and Fig. 3, a plan
view.
At 1 is the shell of the boiler; and at 2, 3, the 2 flues, the masonry being at 4,
and the return flues at 5, 6. At the back of the two main flues 2, 3, is a water
chamber 7, which, as seen at Fig. 1, is turned round at its ends, thereby forming a
box-shaped chamber A, but open at B to the flues 2, 3. To this water chamber and
at its lower end is connected a pipe 8 extending upward, and attached to the lower
part of a cistern 9, but the said pipe extends a short distance therein, in order to
prevent its receiving sediment which may accumulate in the said cistern 9.
To the upper part of the water chamber 7 is connected another pipe 10, which
also enters the cistern 9, but extends some distance upward therein, as seen in Fig. 1.
At 11 is a smaller cistern, which is capable of being kept to a fixed level with
water by means of a ball tap 12, such water being supplied through a pipe 13 from
any convenient source. At 15 is a pipe leading from the cistern 9, and communi-
cating with a pump, by which water derived from the cistern 9 may be forced into
the boiler, but if the said cistern be placed at a sufficient elevation, so that the
column of water may overcome the pressure of steam, then, as is well understood,
the pump may be dispensed with.
From the bottom of the smaller cistern 11 there extends a pipe 14, which
communicates with the before-mentioned pipe 8.
The operation is as follows:-The products of combustion passing along the
flues 2, 3, enter the space A of the water chamber 7, and heat the water therein,
which then rises into the cistern 9 by the pipe 10, borne upward by the cooler and
therefore heavier column of water in the pipe 8, and thus a circulation is kept up
on the principle well understood. But during this time heated water is drawn off
through the pipe 15 to supply the boiler, as before mentioned, and the loss in the
cistern 11 is continuously supplied by means of the pipe 14, which receives its supply
from the smaller cistern 11, such water joining that which by reason of its greater
weight is descending in the pipe 8 to be heated in the chamber 7 previously to
passing up the pipe 10 into the cistern 9, and thus a constant supply of hot water
is present in the said cistern, the level thereof being determined by the ball tap 12,
and as the cistern 9 is open or not tightly covered, no steam pressure can
accumulate therein, or in any other part of the apparatus.
.
In order to increase the heating surface of the chamber 7, pipes, as at 16, may be
adapted thereto, such pipes being open at their ends, and therefore filled with
water.
Figs. 4, 5, and 6 shew my Invention modified and adapted to another con-
struction of boiler; at 2, 3, are the two flues; and at 7 the water chamber placed
at their ends, but in this case the products of combustion after entering the space A
turn downwards, and pass along a flue 17 situate beneath the boiler, at the other

page_text: end of which they enter the two side flues 18, in order to meet which arrangement
the water chamber is extended downwards, as seen, particularly in Fig. 4; and at 16
are pipes for increasing the heating surface. At 10, 8 are the flow and return pipes
as before, but the cisterns 9, 11, of the former Figs. are not repeated, they however,
and the parts connected there with, are precisely the same as already described.
Fig. 7 represents a boiler similar in arrangement to that shewn at Fig. 1, but in
this instance the water chamber 7 is made without a bottom part, and without
ends.
Fig. 8 represents a boiler answering to that shewn at Fig. 4, but the water
chamber 7 has no bottom part, and is without ends, as shewn in the detached views
thereof at Figs. 9. and 10, and the dotted lines 16 shew how in this construction
pipes may be adapted for obtaining additional heating surface.
I have above shewn and described my Invention under certain modifications, but
I do not limit myself thereto, as the chamber containing the water to be heated
may be of other forms, and be adapted to other situations through which the
products of combustion may be caused to act upon it, that which I claim as secured
to me under the above in part recited Letters Patent, and for the purpose above set
forth being the application of a chamber containing water, which is heated by the
products of combustion, such water being then caused to circulate through open
apparatus, from whence it may be drawn as feed water.
In witness whereof, I, the said Thomas Jones, have hereunto set my hand
and seal, this Eighth day of February, in the year of our Lord, One thousand
eight hundred and seventy-eight.
THOMAS JONES. (L.S.)