AN IMPROVED METHOD OF AND APPARATUS FOR PURIFYING FEED WATER FOR STEAM BOILERS
Year: 1878

page_text: :
LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
"AN IMPROVED METHOD OF AND APPARATUS FOR PURIFYING FEED WATER
FOR STEAM BOILERS." A communication from abroad by Samuel Jarvis
Hayes, Edward Turner Jeffery, and Henry Schlacks, all of the United States
of America.
Sealed the 28th December 1878, and dated the 8th November 1878.
.
COMPLETE SPECIFICATION filed by the said William Robert Lake at the
Office of the, Commissioners of Patents on the 8th November 1878.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED METHOD OF AND APPARATUS FOR
PURIFYING FEED WATER FOR STEAM BOILERS." A communication from abroad by
Samuel Jarvis Hayes, Edward Turner Jeffery, and Henry Schlacks, all of the
United States of America.
The object of this Invention is the purification of the feed water of locomotive,
marine, stationary, and other steam boilers, before it is allowed to mix with the
water in the boiler, by the removal of the lime, magnesia, and other impurities,
which form scale or incrustations upon the flues, crown sheets, and other sheets or
parts of such steam boilers.
It is well known that in the use of steam boilers these incrustations retard the
transmission of heat through the furnace sheets and flues, and thus render an
increased consumption of fuel necessary to generate steam, and also greatly injure
these sheets and flues, thereby largely increasing the cost of repairing the said
boilers.
Attempts have been made to remove these impurities from the feed water supplied
to stationary boilers by causing the water to be brought into contact with the
exhaust steam from the engine in a tank or vessel separate from the boiler, in which
tank or vessel are arranged shelves or plates of metal whereon the impurities might

page_text: the scrap or plates, and the lime, magnesia, and many other impurities in the water
will be deposited on such scraps, pieces, or plates, and the water will enter the boiler
nearly if not quite free from such impurities.
The scraps, plates, or other pieces or substances used, as above described, in the
dome or steam space may be removed as often as necessary to be cleansed and
replaced, or other scraps or pieces may be substituted therefor.
When a form of boiler is used with which it is not convenient to employ a dome,
the said scraps, pieces, or plates may be placed in a suitable tank or vessel so
arranged with reference to the boiler that live" steam can pass from the boiler to
the said tank or vessel, into the top of which the feed water can be introduced, and
having passed through or over the scrap, pieces, or plates, it can pass out at the
bottom and be conducted or forced into the boiler.
The size of the dome or tank containing the said scraps or pieces varies with the
size of the boiler. It is obvious that a large quantity of such scraps or pieces will
be more efficient than a small quantity of the same.
Having thus fully described the said Invention as communicated to me by my
foreign correspondents, and the manner of performing the same, I wish it understood
that I claim,
First. The herein-described method of purifying feed water for boilers by
admitting or injecting it above the water line into direct contact with the "live"
or boiler steam, and into contact with the removable steam-heated scraps, pieces, or
plates, before it descends into or mixes with the boiler water, as above specified.
Second. The apparatus comprising the dome or other vessel placed upon or in
combination with a boiler, and communicating with the same through a suitable
opening therein, and which dome or vessel coutains scraps, plates, or pieces supported
on a perforated plate or otherwise, and into the steam space of which dome the
water enters through a suitable feed pipe and nozzle, as above set forth and for the
purposes specified.
In witness whereof, I, the said William Robert Lake, have hereunto set
my hand and seal, this Eighth day of November, in the year of our Lord
One thousand eight hundred and seventy-eight.
W. ROBT. LAKE. (L.S.)