Improvement in Boilers.
Year: 1894

page_text: Improvement in Boilers.
I, OSSIAN CARROL DAVIS of Racine, in the County of Racine, and State
of Wisconsin, one of the United States of America, Inventor, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
My invention is an improvement in boilers, that is, water heaters or steam
generators and it consists of certain improved constructions and combinations of
parts whereby water is more readily heated or steam more quickly generated.
The best form in which I have contemplated embodying my invention is
illustrated in the accompanying drawings and the said invention is disclosed in
the following description and claims.
In the drawings,
Figure 1 is a vertical section of my improved boiler, and
Figure 2 is a partial top view of the same.
In these figures A is the outer shell of the boiler, B is the inner shell forming
the fire box. The shells A and B are united at the base and at the upper ends the
shell A is provided with a head a and the shell B with a head b. These heads are
a distance apart and they are connected by tubes b' for the passage of the products
of combustion through the boiler.
The head of the shell B is provided with a downwardly extending inner or
depending shell C which increases in size as it descends and is provided at its lower
end with a re-entrant bottom c forming the top or dome of the fire box.. Within
this depending part of the boiler or heater is placed the inverted funnel shaped
deflector D. This deflector is preferably supported upon the bottom of the
depending portion C of the boiler. A space must be provided between the lower
edge of the deflector and the bottom to permit the free passage of the water
between them; and in order to secure this I provide the lower edge of the
deflector with feet d which rest upon the bottom c. The upper tubular end of
the deflector is loosely held in the outlet through the head a. In this instance
the bead is provided with a socket E to which a pipe may be secured to conduct
away the out-going stream of water or steam, and the upper end of the deflector D
is provided with projections e e to form a space between the deflector and the
socket.
In practice the fire box is provided with a grate and the top of casing A is fitted
with a bood for conducting the products of combustion to a stack or up-take of
usual construction.
The space between the shells A, B, the heads a, b and within the depending
portion C constitute the interior of the boiler and the shell A is provided with one
or more inlets a' through which water is brought into the boiler.
The method of operation of my improved device will be at once apparent to
any one skilled in the use or construction of this class of devices.
When used in connection with a circulatory system the water enters at the
inlets a' al and passing up between the shells takes the heat from the inner shell B
reducing the temperature of the same and thus greatly protecting the walls of the
fire box. The water then passes upward through the series of pipes where it is
further heated, then downward within the depending portion C when it passes
beneath the deflector and is brought into contact with the crown or dome of
the fire box and is bighly heated expanding and rising quickly through the

page_text: tubular part of the deflector and passing in a strong current out through the
outlet pipe:
In case any steam is generated in the boiler it passes out through the deflector
or through the space between the upper end of the same and the outlet opening.
The construction also gives excellent results as a steam. generator for heating
and other purposes. In such case the deflector tube may if desired be cut off at
the dotted lines shown in the drawings.
The lower part of deflector C resting upon the bottom c of the boiler has a
considerable degree of heat imparted to it and the water between it and the bottom
is by reason of this, quickly raised to a high degree of temperature, while the
incline of the deflector concentrates the same into the tubular portion giving the
sharp action before described.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. A water boiler having a bottom portion forming the top of the fire box and
provided with an inverted funnel shaped deflector resting on and supported by the
said bottom portion, substantially as described.
2. A water heater or boiler having a re-entrant bottom and provided with an
inverted funnel shaped deflector resting on and supported by said bottom, substan-
tially as described.
3. The combination with a water heater or boiler, of an inverted funnel shaped
deflector and provision for the escape of steam between the top of said deflector
and boiler, substantially as described.
4. The combination with a water heater or boiler provided with outlet and
inlet, or an inverted funnel shaped deflector adjacent to the outlet resting on and
supported by the bottom of the boiler, of tubular passages for the product of
combustion passing through the boiler between the inlet and said deflector,
substantially as described.
5. The combination with a water heater or boiler, provided with an outlet and
inlet, of a depending portion extending to near the bottom of the boiler having an
interior passage connected directly with the outlet, and tubular passages for the
products of combustion passing through the boiler between the inlet and said
depending portion, substantially as described.
Dated the 4th day of Turn 1904
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.