IMPROVEMENTS IN FEED WATER PURIFIERS FOR BOILERS
Year: 1883

page_text: LETTERS PATENT to William Phillips Thompson Fel Inst. P. A of the
Liverpool and London Agency for Foreign Patent Solicitors 6 Lord Street
Liverpool in the County of Lancaster Civil Engineer for an Invention of
"IMPROVEMENTS IN FEED WATER PURIFIERS FOR BOILERS A communication
from Charles Elliot a person resident at the city and county of San Francisco
and State of California United States of America.
COMPLETE SPECIFICATION filed by the said William Phillips Thompson at
the Office of the Commissioners of Patents on the 13th February 1883.
WILLIAM PHILLIPS THOMPSON Fel. Inst. P. A. of the Liverpool and London
Agency for Foreign Patent Solicitors 6 Lord Street Liverpool in the County of
Lancaster Civil Engineer " IMPROVEMENTS IN FEED WATER PURIFIERS FOR
BOILERS a communication from Charles Elliot a person resident at the city
and county of San Francisco and State of California United States of America.
"
My invention relates to an apparatus adapted to be placed in the interior of a
boiler for the purpose of purifying the water previous to its use in the boiler. It
consists of a closed cylindrical settler having a drip-funnel opening into the settler
to receive the inflowing water and an overflow through which the purified water
escapes into the boiler. The settler has legs which rest upon the tubes of the boiler
and the apparatus is placed above the water level in the boiler. The settler is also
provided with the necessary blow-off, and the body of the settler may be made
square, as well as cylindrical
The water is introduced into the apparatus through a perforated spiral pipe at
or near the top of the boiler above the water line, and falls in a fine spray through
the mouth of the flaring drip-funnel into the settler. It there deposits its impurities,
such as are sufficiently heavy sink to the bottom while the lighter impurities float
on the surface above the level of the interior opening of the overflow, which
extends for some distance into the settler for this purpose The purified water then
escapes by the exterior mouth of the overflow, which is on a lower level than the
mouth of the drip-funnel.
The sediment is removed by means of a blow-off adapted to the settler. A check
valve in the overflow closes that opening when the blow-off is opened so that the
steam is caused to enter at the drip-funnel and effect a thorough cleansing of the
settler by traversing it from end to end.
It is necessary that the drip-funnel should extend some little distance into the

page_text: settler in order to secure the air-space inside the settler into which the impurities
may rise. It should not however extend as far into the settler as the overflow.
By spraying the water previous to its introduction into the settler it is exposed
to the high heat of the boiler and the depositing of its sediment greatly assisted.
In order to supply chemicals to the water in the settler I attach a branch pipe
to the feed pipe, through which the chemicals are forced by a force pump or other
suitable means into the feed pipe and thence carried to the settler.
In the accompanying drawing.
Fig 1. is a view of my invention in section, and
Fig 2. is a view of a modification of the same.
A is the boiler B is the perforated spiral feed-pipe. C is the drip-funnel D is the
settler, E is the blow-off F is the overflow extending below the level of the water
in the settler G is the check valve H H are the legs of the settler resting on the
tubes II of the boiler; Lis the level of the water in the boiler; M is the level of
the water in the settler, and N the sediment deposit.
In Fig 2.I have represented the drip-funnel with a long inclined flat pipo
The bottom of this pipe is provided with riffles or cross-corrugations as shown in
the drawing...
The advantage of this modification in the drip-funnel is that the water flowing
through the pipe in the presence of the live steam, deposits there its impurities, and
when the settler is blown off the steam and spray will rush through the pipe und
clean it off ready for another deposit.
the inclined pipe a a are the corrugations and P is a bracket which
supports the funnel-end-of-the-pipe.
I do not limit myself to the form of check valve shown, as any check valve that
will operate as described will serve the purpose of my invention.
Having thus described the invention as communicated to me what I claim as new
and desire to secure by Letters Patent is
1 The combination with a settler of a feed pipe, a branch pipe attaclied to the
feed pipe, and means for forcing chemicals through the branch pipe into the settler,
substantially as herein before set forth.
2nd The combination of the drip-funnel, the closed settler, the overflow extending
into the settler and the blow off substantially as herein before set forth.
3rd The combination of the drip-funnel, the closed settler, the overflow extending
into the settler, the check-valve, and the blow off substantially as hereinbefore set
forth.
4th The combination of a check-valve with the overflow of a closed settler
substantially as and for the purpose set forth.
5th The combination of the boiler, the perforated spiral feed pipe, and the closed
settler having the drip-funnel the overflow the check-valve and the blow off,
substantially as herein before set forth.
6th The combination of the boiler, the perforated spiral feed-pipe and the closed
settler having the drip-funnel the overflow, the check-valve and the blow-off
substantially as hereinbefore set forth.
7th A settler provided with an inclined corrugated drip-funnel pipe substantially
as and for the purpose herein before set forth.
In witness whereof, I the said William Phillips Thompson have hereunto
set my hand and seal this twelfth day of February in the year of our Lord
one thousand eight hundred and eighty three.