Year: 1886

page_text: before its Introduction into the Boner.
I WILLIAM EDWARD GEDGE of No. 11 Wellington Street Strand London in the
County of Middlesex, Patent Agent, do hereby declare the nature of this invention
(a communication from. (abroad by James Edmund Carroll, of San Francisco
California, United States of America) and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My Invention relates to an apparatus for heating and purifying the feed-water
before it is introduced into the boiler.
It consists of a tubular chamber extonding through one end of the boiler to
nearly or quite its whole length, said chamber having within it a horizontal
diaphragm which divides it into two parts.
Water is first introduced though the proper pipes into the lower part, passing
along the tube and through vertical holes or perforations made at the inner end of
the diaphragm into the upper part of the chamber where it returns above the
diaphragm and is finally discharged into the boiler through openings made in the
upper part of the tubular chamber near the receiving end.
It also consists in a means for closing the end of the chamber so as to make a
tight and easily removable head, whereby the interior may be easily inspected.
Referring to the accompanying drawings.
Figure 1 is a view of my apparatus.
Figure 2 is a longitudinal vertical section.
Figure 3 is a view of the head, showing the manner of making the joint and
Figure 4 is an end view thereof.
A represents the tube-sheet or end of the boiler, through which a tubular
chamber B is introduced, extending nearly or quite the length of the boiler in a
horizontal position, and having its centre at or about the water level.
The end within the boiler is closed by a plug, welded or otherwise secured so as
to permanently close this end.
The inner end may be supported and steadied by stands or hangers from
the interior of the boiler. Within this tubular chamber, is fitted a horizontal

page_text: diaphragm C. This diaphragm is preferably, introduced by heating the tube so as
to expand it, when the diaphragm may be easily slipped into place, extending the
whole length of the tube, and when the tube has cooled, it will be held rigidly by
the contraction of the tube, without other fastening. D is a head which fits into
the front end of the tube, or that one passing through the boiler head; and it has
a transverse slot made in it which fits over the edge of the horizontal diaphragm
at this end, thus making a tight joint, and holding the diaphragm in proper
position.
i
The head D has a flange E, with bolt-holes which fit over the bolts F projecting
from the head through which the chamber B passes, and by. means of nuts upon
the outer end of these bolts, the flange is drawn down and secured.
Around this flange and inside of the circle of the bolt-holes, and outside of the
head D, is a V-shaped projecting ridge made of copper or other soft metal, and
when the flange is drawn down by screwing up the nuts, this metallic ring will be
compressed against the end of the plate through which the tube B passes, thus
making a perfectly-steam and water-tight joint, so that it is not necessary to pack
the tube, or make a specially tight joint where it passes through the head, the joint
being formed by this ring, as before stated.
Through the lower part of the head D, a hole is bored and the tube H screwed
into it. This tube connects by a T-connection I with the feed-water pipe J, and
the blow-off pipe K, these pipes having the proper check-valves or cocks, as shown.
The upper part of the tube or chamber B, is perforated with holes at a point
near the head through which it enters the boiler, as shown at L, and the horizontal
plate or diaphragm is also perforated with holes at or near the opposite end of the
chamber B, as shown at M.
A small space may also be left at the extreme end of the diaphragm, or a slot
cut at that point, as shown
The operation. of the device will then be as follows. Water being admitted
through the feed pipe J, will pass through the hole in the lower part of the head D,
flowing along the bottom of the tube, where it becomes heated by, the action of the
steam or water around the exterior of the tube, and when it reaches the end of the
tube, it will rise through the holes M in the horizontal diaphragm into: the upper
chamber, whence it flows back to the front end and passes out into the boiler
through the holes in the top of the chamber, as shown at L.
By this action, the water is heated so that it is introduced into the boiler at a
high temperature, and in the action of heating it is caused to deposit impurities
which are contained in it, by the well known action caused by the heating of
water; these impurities being retained in the tubular chamber.
When it is desired to clean this chamber out at intervals, the check-valves or
cocks in the water-supply pipes are closed, and the cock of the blow-off pipe K is
opened.
Steam thus entering the top of the chamber B, through the holes L, and passing
along above the diaphragm, passes downward into the lower part through the
holes M, and the slot at the end, thence returning, passes out through the opening
and pipe through the head D, and thence through the blow-off pipe.
This action completely carries off all sediment or deposit which has collected
upon the surface of the diaphragm, and in the lower part of the tube, thus leaving
it perfectly clean.
I am aware that feed-water heaters have been made with tubes arranged one
within another, but I am not aware that such a construction as I have shown bas
been employed.
.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
A horizontal tubular chamber, extending into the boiler, 'having its upper part
perforated near the entering end, a horizontal diaphragm fitting in said tube and

page_text: having perforations through its inner end, together with a head fitting the entering
end of the tube, and slotted to receive the edge of the diaphragm, a flange and
bolts by which said head is secured in place, and a soft metal packing ring, secured
to the flange so as to be compressed by the plate through which the tube passes,
to make a joint, and a passage through the head to admit water to the lower
compartment, and allow sediment to be discharged therefrom, substantially as
described.
Thind this molith dan af Nawamben 1886.