Improvements in Boilers for use in connection with Heating Apparatus.
Year: 1899

page_text: Date of Application, 14th Mar., 1899-Accepted, 22nd Apr., 1899
COMPLETE SPECIFICATION.
Improvements in Boilers for use in connection with Heating
Apparatus.
I, WILLIAM KANE, of 2006, North Twenty-second Street, in the City and County
of Philadelphia, State of Pennsylvania, United States of America, Manufacturer,
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:-
1
It is one of the objects of my invention to provide a low pressure boiler of
simple and economical construction for the generation of steam or hot water,
which shall be quick and economical in its action in raising the temperature of
the water or in generating steam.
It is also one of the objects of my invention to enable the water circulating
tubes and parts connected with them to be easily and quickly removed for the
purpose of making repairs, so that the delay and annoyance usual to the making
of repairs may be greatly reduced.
While my improved boiler may be used, so far as many of its principal features
are concerned, with any suitable means for supplying heat, it is one of my objects
to enable gaseous fuel to be satisfactorily employed and to avoid the escape of
gases and odors therefrom into the room or building, and a part of my invention
relates to improvements designed for this object.
By employing a series of water tubes extending from a water chamber of small
cubical capacity, to which the heat is applied, into the dome or chamber, in which
the body of water is contained, and arranging such tubes so that a portion thereof
project above the normal water level in said dome or chamber while the others
are below the water level, I am able to obtain a more efficient circulation and to
raise the temperature of the whole body of water very rapidly.
By employing a removable crown-plate forming the base of the dome or upper
chamber, and connecting the water tubes thereto, I am able to easily and quickly
remove the water tubes, and the water chamber with which they are connected,
from the outer shell or casing of the boiler by the disconnection and removal of
the crown-plate.
In the accompanying drawings:
Fig. 1 is a longitudinal vertical sectional view of a boiler embodying my
invention;
Fig. 2 is a horizontal sectional view of the same on the line - of Fig. 1; and
Fig. 3 is a plan view of the burner.
A is the outer shell or body forming a hollow chamber A¹ which is closed at
the top by a crown plate or diaphragm B.
C is a dome or cap located above the crown-plate B and forming therewith an
upper closed water and steam chamber C¹.
In my preferred construction the crown-plate B is detachably secured between
flanges a, c, of the shell and dome by bolts b. To facilitate the removal of the
bolts, the flanges a, c, and the edge of the plate B may be provided with notches e,

page_text: in which the shanks of the bolts may fit, thus allowing the bolts to be removed
when the nuts are loosened.
D) is a hollow water chamber located in the base of the chamber A' and provided
with a series of water tubes E, F, extending up through the chamber A and
projecting through the crown-plate B, to which they are secured.
A portion of these tubes, as E, are longer than the tubes F and project to a
greater distance into the chamber C, as shown, and these tubes are preferably
arranged alternately long and short. The water chamber D is connected with a
suitable water supply pipe or return G.
I
Heat may be supplied to the water chamber D in any convenient manner.
have, however, shown my boiler adapted for use with gaseous fuel supplied by a
burner H located below the water chamber D.
The preferred construction of the water chamber D is illustrated in the draw-
ings, and consists of concentric tubular rings d, d, united by tubular connec-
tions d². When this form of water chamber is employed, the burner H is corres-
pondingly constructed, consisting of concentric annular pipes g, g united by
connections 3, as shown in Fig. 3.
The chamber A may be provided with outlets f near the top, through which
the gases or products of combustion arising from the burners may pass off through
pipes I and be conducted off to a flue or outlet, so as not to escape into the room
or cellar in which the heater is located. To prevent the formation of an unequal
draft by the escape of the gases, I prefer to locate one outlet f on each side, as
shown.
The chamber C is provided with the usual steam or water outlet or supply
pipe J by which the steam or hot water is conducted to the heaters; radiators; &c,
through the building and the return of the cool water, or water of condensation,
takes place through the pipe G to the chamber D.
The dome C may be provided with the usual safety valve and pressure and
water gauges.
In utilizing the boiler for the generation of steam, the water level is main-
tained at a point between the tops of the long and short tubes, so that a body of
water is maintained above the tops of the short tubes while the long tubes pro-
ject above into the steam space.
The heat from the burners H_passes up into the chamber A' heating the
chamber D and also the tubes E, F, and plate B.
When heat is applied to the chamber D, the heated water rises in the longer
tubes E and overflows or boils over into the body of cool water in the chamber C.
Owing to the construction of the water chamber D only a small volume of
water is subjected to the heat at one instant, and consequently the temperature
of this small volume of water will be very quickly raised, and as it is immediately
introduced into the body of cool water, it acts to quickly raise the temperature
of the main body of water. This construction greatly facilitates circulation, as the
long tubes commence to eject hot water into the open steam space almost imme-
diately the heat is applied, although the main body of the water still remains
comparatively cool: From this it results that the temperature of the main body
of water in the chamber C¹ is materially raised by the introduction of this heated
water from the tubes E even before the heat, acting upon the plate B is sufficient
to materially affect the temperature. The heat arising from the burners Hacts
first to heat the small volumes of water in the chamber I) and to cause that heated
water to rise in the tubes E and flow into the chamber C, and then, arising in
the chamber A' acts directly upon the plate B to further raise the temperature
of the main body of water.
In utilizing the boiler as a hot water heater the chamber C₁ is maintained
full of water, the circulation being induced by the difference in the length of the
pipes E. F.
1.
As the tubes E, F, are connected with the crown-plate Band water chamber D,
these parts may be easily removed from the shell or body for the purpose of

page_text: making repairs. To accomplish this the bolts are removed, and the dome C lifted
off; the pipe G is disconnected, and the crown-plate B, with the tubes E, F,
and water chamber D may then be lifted out of the shell A.
This construction enables repairs to be made very easily and expeditiously.
The details of construction may be varied without departing from the invention.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is;
1. The removable construction of the circulating tubes and water chamber,
embracing the detachable plate supported by the outer shell, the tubes carried
thereby and extending downward, and a water chamber carried by the ends of
the tubes.
2. The removable horizontally disposed tubular water chamber carried by the
circulating tubes.
3. The series of long and short circulating tubes connected with the water
chamber at one end and projecting into the upper closed chamber C' at the other
end, with part of said tubes projecting therein for a greater distance than others.
4. The combination of the horizontally disposed tubular water chamber with
the tubular gas burner located below it.
5. The tubular water chamber carried by the circulating tube composed of the
tubular rings d, d, and the connecting portions d³.
Dated this 17th day of February 159I.
WILLIAM KANE.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.