Year: 1887

page_text: Date of Application, 16th June, 1887
Complete Left, 16th Mar., 1888
Complete Accepted, 20th Apr., 1888
I, HENRY DARBY, of 123 Caledonian Road, in the County of Middlesex, Bath
Maker and Heating Apparatus Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in the arrangement and construction of
apparatus for heating water for domestic and other purposes.
The apparatus consists of a vertical chamber or vessel (advantageously cylindrical)
a conical annular inclined or taper chamber, being formed therein, and the water
circulating pipes and shallow chamber.
A gas burner (advantageously a ring) is mounted near the lower end of the air
chamber and above the burner a series of pipes are mounted side by side and connected
by transverse pipes thus forming a grid through the whole of which water supplied
from an inlet pipe (regulated by a stop cock) circulates passing backwards and
forwards and then out into a shallow chamber mounted just above the pipes to which
chamber a central vertical pipe is connected. From the upper end of the central pipe
the water flows over a convex circular plate on to an inverted conical cover mounted
upon the annular water chamber into which the water passes through perforations
near the
apex of the inner cone against which the heated air from the gas burner
below impinges in its passage to the outlet at the top.
The circular plate on the top of the vertical water pipe acts as a baffle plate to the
passage of the heated air which is also intercepted by another baffle plate below the
outlet before it finally escapes into the atmosphere nearly all the heat being thus
extracted from it and transmitted to the water which trickles down the conical sides
of the annular chamber from which it overflows through an outlet pipe in the narrow
annular space forming the lower part of the water chamber.

page_text: The gas from the supply pipe is advantageously combined with air on the Bunsen
principle in its passage to the burner and the gas is first lighted by an auxiliary
moveable gas supply pipe which can be introduced through an opening below the
burner in order to avoid the risk of explosion of an accumulation of gas and air in
the apparatus.
The water circulating pipes and shallow chamber mounted over the same constitute
an important feature of my present invention and can be readily adapted to a variety
of purposes such as heating water for baths greenhouses and other hot water supply
purposes.

page_text: Figure 1 shows a vertical section of apparatus suitably arranged and constructed in
accordance with my invention for heating water. Figure 2 is a vertical elevation of
the same in perspective and Figure 3 is a plan of the heater through which the water
circulates as indicated by arrows.
a a is a vertical chamber or vessel, advantageously cylindrical, in which the conical,
annular, inclined, or taper air chamber 6 is arranged the lower part at being
cylindrical thus forming an annular chamber for holding water which flows away
through the outlet b².
c is a gas burner (advantageously one or more rings) and just above the gas
burner c the series of pipes d are mounted side by side and connected together by
transverse pipes d' d' as shewn thus forming a hollow tubular grid (of which there
may be one or more placed over each other) through which water from the supply
pipe d² (regulated by a stop cock d³) circulates passing backwards and forwards (as
indicated by the arrows) and thence by short vertical pipes into a shallow chamber e
mounted just above the grid or series of pipes d. d. From the chamber e the water
is conducted by the central vertical pipe e to the shallow chamber e² whence it ascends
by short vertical pipes into the shallow annular chamber e³ from the circumference of
which it flows down the inclined surface or inverted conical cover et on to the inclined
surface from the central part of which it flows on to the conical heated surface of
the conical air chamber 6 into the cylindrical annular chamber 6' from which it finally
passes away in a highly heated condition through the outlet to be used for any
purpose for which it may be required.
The circular chamber e² on the top of the vertical water pipe e' acts as a baffle plate
to the passage of the heated air, which is also intercepted by the under surface of the
chamber e in its passage to the central outlet et before it finally escapes into the
atmosphere at 6x nearly all the heat being thus extracted from it and transmitted to

page_text: the water which trickles down the conical heated surface of the air chamber b from
which it overflows through the outlet 62 in the annular space 6¹ forming the lower
part of the water chamber-Figure 4 is a plan of the chamber e.
The gas from the supply pipe c' is advantageously combined with air on the Bunsen
principle in its passage to the burner c and the gas is first lighted by an auxiliary
moveable gas supply pipe 2 which by moving on a joint can he introduced through
the opening below the burner e in order to avoid the risk of an explosion caused by
an accumulation of gas and air in the interior of the apparatus.
The water circulating pipes d d' and the shallow chamber e mounted over the same
constitute an important feature of my present improvements and can be readily
adapted to a variety of purposes such as heating water for baths, green-houses, and
other hot water purposes.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what 1
claim is,
1. The improved arrangement combination and construction of apparatus for
heating water in which a series of pipes continuously supplied with water are mounted
over a gas burner within a suitable casing having a conical air chamber formed
therein the heated water circulating through the pipes and through a shallow chamber
into a central vertical pipe thence through one or more shallow chambers from which
it flows on to the heated internal conical surface to be further heated and into a hot
water receptacle below substantially in the manner and for the purpose herein before
described and illustrated by the Drawings hereto annexed.
2. I claim the improved general arrangement of apparatus for heating water for
domestic and other purposes substantially such as hereinbefore described and
represented in the Drawings hereto annexed.
D
1012 1
. 1000