Improved Water Heater for Domestic Supply and Hot-water Heating Purposes.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Water Heater for Domestic Supply and Hot-water
Heating Purposes.
I, HENRY HERBERT WILSON, of Rosslyn, Cale Green, Stockport, Heating
Engineer, do hereby declare the nature of my said invention to be as follows:-
My invention relates to and consists of a novel construction of heater for
supplying hot water for domestic suppy purposes, and hot-water heating pur-
poses, from a single coke fire, as hereinafter described.
According to my invention I construct the heater of, by preference, rectangular
outline in plan, with curved or arched top. Within the upper part, and
surrounded by the water which forms the supply for hot-water heating purposes,
place the cylinder or vessel for holding the domestic water supply. In the
lower part of the heater I provide the furnace and furnace grate, with feed, stoking
and ashes openings, and doors. Parts of the heater which contain the water for
hot-water heating purposes form the side, front, fire-bridge and flue.
The water for the domestic supply is admitted through a pipe which is
connected to one or more further pipes or to a casing presenting a large heating
surface, and which are or is situated in the heater at a point immediately above
the furnace, and in the space occupied by the water for hot-water heating purposes,
hence before the supply of cold water enters the cylinder containing the bulk of
heated water for the domestic supply, it is heated up, and is thus prevented
lowering the temperature of the domestic supply, which would be the case if
admitted direct to the cylinder.
HENRY HERBERT WILSON,
By John G. Wilson & Co., "
Agents.
Improved Water Heater for Domestic Supply and Hot-water
Heating Purposes.
I, HENRY HERBERT WILSON, of Rosslyn, Cale Green, Stockport, Heating
Engineer, 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 relates to and consists of a novel construction of heater for

page_text: supplying hot water for domestic supply and hot water heating purposes from a
single fire as hereinafter described.
According to my invention I construct the heater of by preference rectangular
outline in plan with curved or arched top. Within the upper part and
surrounded by the water which forms the supply for hot water heating purposes
I place the cylinder or vessel for holding the domestic water supply In the
lower part of the heater I provide the furnace and furnace grate with feed, stoking
and ashes openings and doors. Parts of the heater which contain the water for
hot water heating purposes form the side, front fire-bridge and flue.
The feed water for the domestic supply is admitted through a pipe which is
connected to one or more further pipes or to a casing presenting a large heating
surface and which are or is situated in the heater at a point immediately above
the furnace and in the space occupied by the water for hot water heating purposes,
hence before the feed supply of cold water enters the cylinder containing the storage
of heated water for the domestic supply, it is heated up and is thus prevented
from lowering the temperature of the domestic supply which would be the case if
admitted direct to the cylinder.
To make my invention clear I have hereunto appended a sheet of drawings in
which:-
:—
Fig. 1 illustrates an exterior side elevation, and
Fig. 2 a vertical section (slightly modified) of the improved duplex water
heater..
Figs 3, 4 and 5 shew the several main parts separately.
Fig. 6 illustrates a portion of the rear part of Figure 1 in section and Fig. 7
illustrates a modification.
(A) designates the outer casing of the heater and (B) the inner casing, the
interior of this latter serving to hold the supply of water for domestic purposes,
and the space surrounding such inner casing and within the outer casing serving
to hold the supply of hot water for heating purposes. (C) is the furnace, (D) the
base of the heater which also forms the sides of the ash-pit and is fitted with flue
outlet (D), and (E), (F), (G) the inspection, stoking and cleaning doors res-
pectively.
The form and details of construction of the said outer and inner casings (A)
and (B), also the mounting thereof and their relationship to each other, may
vary, but it is preferred that the inner casing (B) be cylindrical and introduced
from the front or rear of the outer casing and that it be slung from the top of
the casing (A) as illustrated, to allow for expansion.
The domestic water supply enters the casing (B) through pipe (H), leaves by
pipe (J) and returns by pipe (I).
The water supply for heating purposes enters the casing (A) through pipe (K)
from cistern (L) and leaves by pipe (M). There may be flanges or sockets on
casing (A) to receive return water of heating mains.
In Fig. 1 I shew the inlet pipe (H) passing direct to the heater (B), but in
Fig. 2, I shew the same pipe passing through the water space of the heater (A)
before entering the heater (B), the effect of which is to heat the supply of cold
water prior to its entering the heater (B), and thus avoid sudden lowering of the
temperature of the domestic supply, and prevent repeated expansion and contrac-
tion and scaling of the metal. In lieu of the pipe (H) passing through the water
space of heater (A) I may provide a special water casing, or a series of pipes,
and connect the pipe (H) to such casing, or to the pipes, but for all practical
purposes the pipe (H) itself is sufficient.
In Fig. 6 I shew the same arrangement as is shewn in Fig. 1, but in section.
In Fig. I shew the heater (B) flush with the shell of the heater (A). Fig. 5 shews
the details of this modification.
The manner in which I prefer to build up the heater is clearly shewn in Figs. 3,
4 and 5, but as aforesaid, it may vary without departing from my invention.

page_text: 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: A duplex water heater, comprising a heater or boiler for the supply of
hot water for heating purposes, and a further heater or boiler within the first
named boiler for the supply of hot water for domestic purposes, substantially as
herein described and illustrated on the accompanying drawings.
2: A duplex water heater, comprising a heater or boiler for the supply of
hot water for heating purposes and a further heater or boiler within the first
named boiler for the supply of hot water for domestic purposes, in combination
with a feed water supply pipe which passes through or is connected with a
further pipe (or pipes) or a casing within the outer boiler before entering the
inner boiler, substantially as and for the purposes set forth.
3: In a duplex heater, the construction, arrangement and combination of
parts, substantially as and for the purposes set forth and illustrated in Figs 1,
3, 4, 5 and 6 of the accompanying drawings.
4: In a duplex heater, the construction, arrangement and combination of
parts, substantially as and for the purposes set forth and illustrated in Figs 2,
or 7 of the accompanying drawings.
Dated this 12th day of May 1900.
HENRY HERBERT WILSON,
By John G. Wilson & Co.,
Agents.