Improvements in and relating to Steam-boiler Feeders.
Year: 1898

page_text: Date of Application, 4th Oct., 1398-Accepted, 10th Dec.,
1898
COMPLETE SPECIFICATION.
Improvements in and relating to Steam-boiler Feeders.
I, JOHN ALEXANDER SUMNER, of Tillar, in the County of Drew, and State of
Arkansas, in the United States of America, Engineer, do hereby declare the
nature of my invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of this invention is to provide an apparatus for feeding hot water
into the bottom of a boiler from an auxiliary tank or feeder located intermediate
a supply-tank and the boiler, and it consists in the construction and arrangement
of parts by which the flow of water into the boiler may be regulated and intro-
duced at a sufficiently high temperature as not to change the temperature of the
water in the boiler, and thus maintain the steam pressure therein.
In the drawings: Figure 1 is an elevation of my improved steam-boiler feeder.
Figure 2 is an enlarged detail sectional view.
The apparatus may be applied to any type of boiler now in common use, the
boiler A shown in the drawings illustrating the application of my invention and
is provided with the usual dome B. Adjoining the boiler, and supported in any
suitable manner, is an auxiliary tank or feeder C, connected to the main tank
or reservoir D by pipe E having globe-valve e, said reservoir being located above
the feeder, while the latter is positioned near the boiler. The feeder is provided
with a water-gauge c, blow-off cock c¹, and valve nipple 2, the latter providing
means for supplying the feeder independent of the reservoir.
Entering the upper part of the feeder is a steam-pipe F, leading from the top
of the boiler for the purpose of introducing steam into the feeder, and is provideil
with an ordinary globe-valve f. A feed-pipe G extends from the bottom of the
feeder and enters the bottom a of the boiler, and is provided with a globe-valve y
for regulating the feed.
It will be understood that after the auxiliary tank or feeder has been filled
with water from the reservoir the valve o is closed and by opening the valve f of
the steam-pipe the steam will enter the feeder and heat the water therein to the
boiling point, the valve in the feed-pipe being then opened to introduce or feed
the water into the bottom of the boiler.
I have found that the best results are attained by introducing the water into
the bottom part of the boiler and at the same temperature as the water in the
boiler, and it is desirable that the water be introduced into the boiler as rapidly
as possible. To accomplish this feature of the apparatus a jet of steam is intro-
duced into the feed-pipe to accelerate the flow, the same being taken from the
dome of the boiler for the purpose. To this end the horizontal pipe H is con-
nected by an elbow-joint to a vertical pipe I extending into the dome B, and
at its other end is connected by a reducing-joint k to a smaller pipe L which
extends into the feed-pipe G and has a depending section L' with an open end
discharging in the direction of the flow. The feed-pipe is provided with a
T-coupling M through which the horizontal pipe L of the injector passes, to
locate the pipe L' in the center of the feed-pipe. A globe-valve N is located in
the vine H to control the admission of steam into the injector.

page_text: By employing the injector herein before described the feeding of the water
into the boiler from the feeder after being brought to a high temperature in the
latter is greatly facilitated by introducing a jet of steam into the feed-pipe,
the steam not only serving to accelerate the flow but also maintains the tempera-
ture of the water while on its way to the boiler.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:
1. An apparatus for feeding hot water to a steam-boiler, comprising a supply-
tank, or reservoir, a feeder located intermediate the supply-tank and boiler adjoin-
ing the latter, a valved supply-pipe connecting the supply-tank and feeder, a
valved feed-pipe connecting the feeder with the boiler entering the bottom of the
latter, and a steam-pipe connecting the upper part of the boiler to the feeder;
together with a second steam-pipe extending from the dome of the boiler into
the feed-pipe and discharging in the direction of the flow to the boiler, as herein
shown and described.
2. An apparatus for feeding hot water to a steam-boiler, comprising a supply-
tank or reservoir, a feeder located intermediate the supply-tank and boiler adjoin-
ing the latter, a valved supply-pipe connecting supply-tank and feeder, a valved
feed-pipe extending from the feeder into the bottom of the boiler, said feed-pipe
having a T-coupling at an intermediate point, and a steam-pipe leading from
the upper part of the boiler into the feeder; together with a pipe extending from
the dome of the boiler, a smaller pipe coupled to the end of the aforesaid pipe
and screwed into the T-coupling of the feed-pipe, and a pipe of small diameter
connected to the end of the other small pipe and depending in the feed-pipe at
the center thereof to direct a jet of steam in the direction of the flow to the boiler,
as herein shown and described.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.