Year: 1895

page_text: Date of Application, 14th May, 1895-Accepted, 15th June 1895
A communication from BRUNO NORDBERG COMPANY, a corporation organised
and existing under the Laws of the State of Wisconsin, and having its
principal offices in the City of Milwaukee, County of Milwaukee and State of
Wisconsin, United States of America.
I ALFRED JULIUS BOULT, of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention and in
what manuer the same is to be performed, to be particularly described and
ascertained in and by the following statement
The main objects of this invention are to provide for easy access to the interio
of the heater and of the upper and lower tube hends, for the purpose of inspection,
repairs and removal of impurities without disturbing the connections of the heater;
to counteract the lifting tendency of the steam on the upper head and thus prevent
straining and loosening the joints between the tubes and the heads in which they
are secured at the ends; to prevent back pressme through the exhaust or steam
inlet to distribute the steam among the water tubes and thereby utilize to the
greatest possible extent the heat contained in the steam for raising the temperature
of the water; to separate impurities from the water entering the heater and to
facilitate their removal therefrom.
It consists of certain novel features in the construction and arrangement of parts
hereinafter particularly described.
In the accompanying diawings like letters designate the same parts in the several
figures.
Fig 1 is a vertical medial section of the improved heater
Fig 2 is a side elevation of the same, a section thereof being removed and a
portion of the jacket or shell being broken away at its upper end,
Fig. 3 is a vertical medial section of the base of the heater, taken in a plane at
right angles to that of Fig. 1.
Fig 4 is a horizontal cross section of the base on the line 4, 4, Fig. 2; and
Fig. 5 18 a similar section on the line 5, 5, Fig. 2
A is the lower tube head and chambei, which is formed with an annular belt or
space
a' around its sides and with a removable bottom a, and constitutes therewith
the base of the heater. The outer walls of the annular steam belt or spaco a¹ are
formed on opposite sides with inlet and outlet exhaust or steam openings and pipe
connections a² and a. B is the upper tube head and chamber, which is formed with
a removable cover b, and connected by tubes C C and a larger central tube D,
(which are preferably made of brass or copper or some other good conductor of
heat) with the lower head A. Return and outlet pipe E, passing centrally through
the tube D, is secured at its lower end by a nut e, to the bottom a, of the lower
chamber A, and at its upper end by a nut ¹ to the upper tube hend. The upper
end of said pipe E is elevated and held above the bottom of chamber B by a
sleeve and a spider e interposed between the nut and the upper tube head, the
spider affording free communication between said chamber and the tube D. The
pipe E thus serves to bind the upper and lower heads together and thereby
counteract the tendency of the steam to lift the upper head and loosen the joints
between the tubes C and D and the upper and lower heads in which they are
secured. A branch pipe E' connected by a T-coupling with the pipe E in the
lower chamber A, passes horizontally out through the wall of said chamber to the

page_text: boiler or other apparatus with which the heater is connected. F18 the water inlet
or supply pipe connected with the opposite side of chamber A, preferably near the
top. G is a drain pipe provided with a suitable cock or valve (not shown) leading
out of the lower portion of the anuular steam space or belt a', for the purpose of
removing from time to time the water of condensation and sediment collecting
therem The bottom a of the lower chamber is provided with a hand hole and
cover a, for the purpose of enabling access to be had to the interior of chamber A
without necessitating the removal of the bottom a. II is the shell of jacket of the
heater surrounding the upper head and tubes C C, and detachably secured to the
base in the usual or any suitable manner It is held at the upper end at the proper
distance from the upper head B by studs or bolts hh, secured in and projecting
radially from sand head, as shown in Figs 1 and 2. The annulai steam belt oi
space a in the base, is divided on opposite sides between the inlet and outlet
openings a² and a' by partitions J J, and above these partitions the space between
the tubes C C and the jacket II is closed by partition plates K K, extending
upwardly to a point near the upper head B. The steam entering the inlet
opening a on one side of the heater is thus compelled to pass upwardly and between
the tubes before it can escape through the outlet opening a' on the opposite side
of the heater.
The improved heater operates as follows;-
Water entering the upper portion of lower chamber Å through pipe F, shown in
Fig 3, passes thence upwardly as indicated by arrows, through the tubes C C
and D into the upper chamber B, and rising therein to the level of the upper end
of pipe E, descends through said pipe and passes out of the henter through the
bianch to the boiler or other apparatus to be supplied. Steam entering the
annular belt a' in the base through the inlet opening a² therem, expands and fills
said belt on that side of the heater, transmitting a portion of its heat to the walls
of chamber A, which in turn transmit it to the water contained there. The steam
being presented by the partitions J J from passing around said belt a to the
outlet opening a on the opposite side of the heater, is compelled to rise in the space
between the tubes C and shell H, and passing upwardly and between said tubes,
gives of its heat, which is transmitted through the walls of the tubes to the water
contained therein. The partition plates K K compel the steam as it rises above
chamber A, to pass upwardly and across the heater between the tubes C C and D
before it can escape through the outlet opening a³, and thereby give off the greatest
possible amount of heat which it contains to said tubes, to be transmitted thereby
to the water passing through them. As the water enters the upper portion of
chamber A, the flow is checked and any impunities contained therein are allowed
to settle to the bottom, from which they may be readily removed through the hand
hole a. The water thus freed from a portion of the impurities contained therein
passes from the upper portion of chamber A through tubes C C and D into the
bottom of chamber B, where its flow is again retarded and remaining impurities are
allowed to settle. From the upper part of chamber B the puer claufed portion
of the water which has been heated by its passage through the tubes C and D
exposed to the steain, is drawn off through the base by the return and outlet
pipe E E.
While water is passing through the upper and lower chambers and the
tubes connecting them, the jacket II may be removed without disturbing the
exterior connections of the heater, and any leiks in the joints can thus be readily
detected and remedied. For the purpose of inspection, repairs and the removal of
sediment, access is readily had to the interior of chambers A and B and to the open
ends of tubes C C and D by removing the bottom a of the lower head and the
cover of the upper head. To remove the bottom a it is only necessary to unscrew
the nut e on the lower end of pipe E and take out the bolts by which the bottom is
secured to the base. To remove the cover it is necessary to first remove the
shell and then the bolts by which said cover is attached to the upper head, but
in neither case are the steam and water inlet and outlet connections with the base
disturbed.

page_text: Various changes in the minor details of the device may be made within the spiri
and intended scope of the invention
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, 1 declare that what I claim 18,-
1. In a water heater the combination of a base having steam and water inlet and
outlet connections and a jacket detachably secured to said base independent of all
the external steam and water connections of the heater and removable therefrom.
without disturbing said connections substantially as and for the purposes described.
2. In a water heater the combination of a hollow base such as A provided with
steam inlet and outlet connections a hollow bead such as B tubes CD connecting
said head with the base water supply and discharge connections passing through the
bage and communicating oue with the water chamber therein and the other with.
the chamber in said hollow head and a steam jachet II surrounding said tubes,
independent of all external steam aud water connections of the heater substantially
as and for the purposes described and illustrated in the accompanying drawings.
3. In a water heater the combination of upper and lower chambers and tube
heads such as A B tubes CD connecting said heads and chambers and a return.
pipe such as E passing through and secured on opposite sides of the upper and
lower heads. substantially as and for the purposes described and illustrated in the
accompanying drawings.
4 In a water heater the combination of a base such as A having a water
chamber and a steam space or belt a' around it with mlet and outlet connectious an
upper head and chamber such as B tubes C D connecting said upper head and
chamber with the chamber in the base, a jacket II surrounding said tubes and
renovable independently of all the external
of the heater
connections
and partitions JK said steam belɩ and the space above it between the inlet
and outlet steam connections substantially as and for the purposes described and
illustrated in the-accompanying diawings.
5. In a water heater the combination of a base such as A having an inner water
chamber and a steam space such as a' around the chamber said steam space having
inlet and outlet connections on opposite sides and intermediate partitions J
o J and K an upper tube head and chamber such as B connected by tubes CD
with the water chamber in the base a supply pipe leading into the chamber in the
base an outlet pipe such as E E' leading from the upper part of the upper chamber
out through the base and removable steam juchet H surrounding said tubes
independent of all external steam aud water inlet and outlet connections of the
henter substantially as and for the purposes described and illustrated in the
accompanying drawings.
6. In a water heater the combination of a base such as A having an iuuer water
chamber provided with a removable bottom a and an annular steam belt such as a'
around said chamber provided on opposite sides with inlet and outlet connections
and intermediate partitious J or J and K an upper chamber such as B connected
by tubes CD with the chamber in the base and provided with a removable cover b
a water supply or inlet pipe leading into the chamber in the base a water outlet
pipe E leading from the upper part of the upper chamber through the lower
chamber and secured on the upper side of the upper tube head and on the under
side of the bottom of the lower chamber and a branch pipe El connected with said
outlet pipe and leading laterally out through the base of the heater substantially as
and for the purposes described and illustrated in the accompanying drawings.
7 in a water heater the combination of upper and lower tube heads and
chambers such as B A tubes CD connecting said chambers an annular steam space
or belt such as a' around the lower chamber provided on opposite sides with inlet
and outlet openings a steam jacket II enclosing the uppei chamber and com-
municating at the base with sand annular steam belt a water inlet or supply pipe
leading into the lower chamber and a return outlet pipe such as E E' leading out

page_text: of the upper portion of the upper chamber through a larger tube D into the lower
chamber and out through the base of the heater substantially as and for the
purposes described and illustrated in the accompanying drawings.
8. In a water heater the combination of a base such as A having a chamber with
a removable bottom a and a steam space or belt such as a' around said chamber
provided on opposite sides with inlet and outlet openings and with intermediate
partitions or J and K an upper chamber such as B provided with a removable
cover & tubes CD connecting said chambers a pipe E passing through the central
tube D and the lower chamber and secured at its ends by nuts e e' on the under side
of the base and on the upper side of the upper tube head respectively a bianch
pipe E connected with said pipe in the lower chamber and leading laterally out
through the base a water inlet or supply pipe F leading into the upper part of the
chamber in the base and a steam jacket H enclosing said tubes and the upper
chamber and detachably secured to the base independently of the steam and water
connections therewith substantially as and for the purposes described and illustrated
in the accompanying drawings.
Dated this 14th day of May 1895.