IMPROVEMENTS IN THE FEEDING OF STEAM BOILERS WITH HEATED WATER AND IN THE COMBINATION OF APPARATUS THEREFOR
Year: 1884

page_text: I ALFRED JULIUS BOULT of 323 High Holborn in the county of Middlesex,
Engineer do hereby declare the nature of this invention for "IMPROVEMENTS IN
THE FEEDING OF STEAM BOILERS WITH HEATED WATER AND IN THE COMBINATION
OF APPARATUS THEREFOR" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
If steam boilers are fed with water heated before its admission, the feeding can
be effected either by injecting the heated water by means of a pump or equivalent
into the boiler, or if the water has to acquire a high temperature, the cold water
may be drawn up by a pump and be made to pass on the way between the pressure-
valve and the boiler through a warming or heating apparatus. In the latter case
the heating apparatus is under the full pressure of the boiler and the present
invention is intended to remove the evils connected therewith, by the application of
two pumps, one of which draws up the cold water and forces it into and through
the feed water heater, while the second injects the heated water into the boiler.
The accompanying drawing is a diagram illustrating this invention. The heating
of the feed water is effected by a system of pipes made of copper or of any other
suitable metal, or by systems of pipes which is or are placed in the flue or smoke
stack in the usual manner.
The feed-water is forwarded by the pumps N° 1 and N° 2 from the feed-water
supply through the system or systems of pipes into the boiler or boilers, N° 1 pump
sucking direct from the feed-water supply and forcing the water into the feed-
heater, whereas pump N° 2 sucks from the feed heater and forwards into the boiler
or boilers. The connection between the feed heater and pump N° 2 can be made
below or be carried up to a certain height, and the entrance of the feed-water into
this apparatus can be made to take place at any height. The proportional
capacities of the pumps may be varied.
Provision can likewise be made so as to disconnect the feed-heater entirely and
let both pumps suck the water direct from the feed-water supply and inject it
direct into the boiler or boilers. The pumps are worked directly by the engine or

page_text: by means of motors or transmissions as may be most convenient. Instead of the
one pump or of both any other water-lifting or injecting apparatus can likewise
be used.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1) The method of feeding steam boilers with feed-water delivered by a pump or
equivalent into a feed water-heater whence it is drawn and delivered into the
boiler by a second pump or equivalent, so that the pressure in the feed water heater
is diminished or altogether removed substantially as set forth.
2) The combination with a feed water heater of two pumps or equivalent, one of
which supplies the water to the heater and the other draws the water from the
heater substantially as and for the purpose specified.
Dated this 21st day of October 1884.
ALFRED J. BOULT.