IMPROVEMENTS IN APPARATUS FOR THE HEATING OF WATER, APPLICABLE FOR ANY PURPOSE FOR WHICH HOT WATER MAY BE REQUIRED."
Year: 1878

page_text: LETTERS PATENT to William Hellier, of 16, Duke Street, Grosvenor Square,
in the County of Middlesex, Hot Water and Gas Engineer, for the Invention
of "IMPROVEMENTS IN APPARATUS FOR THE HEATING OF WATER, APPLICABLE
FOR ANY PURPOSE FOR WHICH HOT WATER MAY BE REQUIRED."
PROVISIONAL SPECIFICATION left by the said William Hellier at the Office
of the Commissioners of Patents on the 25th May 1878:
-
WILLIAM HELLIER, of 16, Duke Street, Grosvenor Sqüäre, in the County of
Middlesex, Hot Water and Gas Engineor. "IMPROVEMENTS IN APPARATUS FOR
THE HEATING OF WATER; APPLICABLE FOR ANY PURPOSE FOR WHICH HOT WATER
MAY BE REQUIRED."
The wäter is first admitted into a cistern which forms the upper part of the
apparatus into which the water is admitted through a ball-cock or valve, forming
together a feed cistern to the apparatus. I use two or more chambers for heating
the water according to the purpose for which the water inay be required.
I connect the feed cistern with the top end of the outer part of the first chain ber
in which the water is heated, which chamber I make for convenience of conical
shape, but not terminating to a point, the bottom of which being near the same
dimension as the feed cistern forming the upper part of the apparatus to which it
is connected.
The inner part of the chamber is made near the same dimension as the outer part,
the top end of which is closed or capped, and not connected with the feed cistern
or the outer part of the chamber, the two being joined together at the bottom
edges only, forms the first or outer chamber with a very thin waterway with the.
top end of the chamber open to the feed cistern.
The inner chamber or chambers I make of similär form, excepting that they are
closed on all sides; and of less dimensions, fitting one over the other, leaving suffi-

page_text: cient space to allow the heat to pass over the whole surface of each chamber.
Each chamber is connected one with the other by means of connecting pipes which
allow the water to pass from one chamber to the other. I then conduct the water
from the inner chamber through a tube or tubes to the draw-off tap, which tube or
tubes are also exposed to the heat. By thus causing a thin body of water to pass
through so large amount of heated surface it attains a high degree of temperaturo,
thus rendering it unnecessary to apply the heat only as the water is drawn off.
I vary the number of the heating chambers and the dimensions and number of
the tubes conducting the water from the inner chamber to the draw-off tap, according
to the volume and temperature of water required for the different purposes for
which it is applicable.
For heating I use gas and atmospheric air mixed in proper proportions, and burn
it through what is termed an atmospheric burner under the chambers and tubes
through which the water passes to the draw-off tap, but my apparatus may be
heated by any other means of applying or generating heat with the same effect.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Hellier in the Great Seal Patent Office on the 13th Novem-
ber 1878.
WILLIAM HELLIER, of 16, Duke Street, Grosvenor Square, in the County of
Middlesex, Hot Water and Gas Engineer. "IMPROVEMENTS IN APPARATUS FOR
THE HEATING OF WATER, APPLICABLE FOR ANY PURPOSE FOR WHICH HOT WATER
MAY BE REQUIRED."
The water is first admitted into a cistern which forms the upper part of the
apparatus into which the water is admitted through a ball-cock or valve, forming
together a feed cistern to the apparatus. I use two or more chambers for heating
the water, varying the number according to the size of the apparatus.
I connect the feed cistern with the top end of the outer part of the first chamber
in which the water is heated, which chamber I make for convenience of conical
shape, but not terminating to a point, the bottom of which being near the same
dimension as the feed cistern forming the upper part of the apparatus to which it is
connected.
The inner part of the chamber is made near the same dimensions as the outer
part, the top end of which is closed or capped, and not connected with the feed
cistern or the outer part of the chamber; the two being joined together at the bottom
edges only forms the first or outer chamber with a very thin waterway with the
top end of the chamber open to the feed cistern.
The inner chamber or chambers I make of similar form, excepting that they are
closed on all sides, and of less dimensions, fitting one over the other, leaving suffi-
cient space to allow the heat to pass over the whole surface of each chamber. Each
chamber is connected one with the other by means of connecting pipes which allow

page_text: the water to pass from one chamber to the other. I then conduct the water from
the inner chamber through a tube or tubes to the draw-off tap, which tube or tubes
are also exposed to the heat. By thus causing a thin body of water to pass through
so large amount of heated surface it attains a high degree of temperature, thus
rendering it unnecessary to apply the heat only as the water is drawn off.
I vary the number of the heating chambers, and the dimensions and number of
the tubes conducting the water from the inner chamber to the draw-off tap, according
to the volume and temperature of water required for the different purposes for
which it is applicable.
For heating I use gas and atmospheric air mixed in proper proportions, and burn
it through what is termed an atmospheric burner, under the chambers and tubes
through which the water passes to the draw-off tap; but my apparatus may be
heated by any other means of applying or generating heat with the same effect. I
also use mineral oil as a means of generating heat where gas is not obtainable.
In witness whereof, I, the said William Hellier, have hereunto set my hand
and seal, this Twelfth day of November, in the year of our Lord Eighteen
hundred and seventy-eight.
WILLIAM HELLIER. (L.S.)