IMPROVEMENTS IN OR APPLICABLE TO THE CONSTRUCTION OF WATER HEATING APPARATUS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, GEORGE SHREWSBURY, of 98, Barrington Road, Brixton, in the County of
Surrey, and 59, Old Bailey, in the County of Middlesex, Manufacturer, do hereby
declare the nature of my. Invention for IMPROVEMENTS IN OR APPLICABLE TO THE
CONSTRUCTION OF WATER HEATING APPARATUS to be as follows:
This Invention relates to certain improvements in or applicable to the
construction of water heating apparatus, especial objects of the Invention being to
effect a more rapid heating of the water than has been hitherto obtainable and
with a less and more economical consumption of the heating agent.
The improvements constituting the Invention are more especially applicable to
water heating apparatus of the kind which is used for the heating of water for
baths or for the heating of greenhouses or conservatories.
In constructing water heating apparatus according to the present improvements,
there is enclosed within an outer cylindrical or other shaped casing an annular
water chamber which is formed at different heights with two or more hollow cross
diaphragms which permit of a through circulation of the water through them and
between all parts of the annular water space. Through each diaphragm there is
made an opening, and the openings in the alternate diaphragms are made at the
oppo-ite ends of the same diameter, or these openings are otherwise placed in the
superposed diaphragms as to cause the heating gases to have a circuitous passage
between the various diaphragms and the surrounding annular water space.
The peculiar arrangement of the diaphragms and of the flue openings formed
therein causes the constant impingement of the heating gases ascending from the
burner against the inner sides of the annular water space and against the different
parts of the diaphragms, and thus, as the heating gases are constantly changed in
their direction of escape, and as thin films of water are constantly being acted
upon by them, the water is most rapidly heated, and most economically as regards
the consumption of the heating agent.
The burner is situated below the lower diaphragm and is formed with an
annular mixing chamber into a nozzle connecting with which the gas is led

page_text: inducing in its entry an indrawing of air, the admixture of gas and air escapes
from the mixing chamber through concentric series of short tubes at the outlet
from which it is ignited.
After traversing the flue space formed by the said annular water chamber,
hollow water diaphragms, and through openings, the beating gases escape,
impinging just before their exit against a smaller water diaphragm connected with
the upper diaphragm just above the through opening therein by means of tubular
connections, and from which smaller diaphragm the hot water escapes by piping to
where required.
Dated this 10th Jew of Lahm 1901

page_text: I, GEORGE SHREWSBURY, of 98, Barrington Road, Brixton, in the County of
Surrey, and 59, ld Bailey, in the County of Midd esex, Manufacturer, do hereby
declare the nature of my Invention for IMPROVEMENTS IN OR APPLICABLE TO
THE CONSTRUCTION OF WATER HEATING APPARATUS," and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :—
This Invention relates to certain improvements in or applicable to the
construction of water heating apparatus, especial objects of the Invention being to
effect a better circulation and more rapid heating of the water than has been
hitherto obtainable and with a less and more economical consumption of the
heating agent.
The improvements constituting the Invention are more especially applicable to
water heating apparatus of the kind which is used for the heating of water for
baths, or for the heating of greenhouses or conservatories.
On the accompanying Drawings, Fig. 1. represents in vertical section water
heating apparatus constructed according to the present improvements, in accordance
with which there is enclosed within an outer cylindrical or other shaped sheet iron or
other casing 1, an annular tinned copper or other water chamber 2, which is formed
at different heights or at intervals apart with two or more hollow cross diaphragms 3,
which permit of a through circulation of the water in the manner shown. Through
each diaphragm 3, there is made an opening 4, and the openings in the alternate
diaphragms are made at the opposite ends of the same diameter as seen best in the
plan view of the water chamber 2, Fig. 2. or the openings 4, are or may be
otherwise placed in the superpose diaphragms 3, as to cause the henting gases
ascending from the burner 5, to have a circuitous passage between the various
diaphragms and the surrounding annular water space.
The peculiar arrangement of the diaphragms 3, and of the flue openings 4,
formed therein, causes the constant impingement of the heating gases ascending from
the burner 5, against the inner sides of the annular water space and the different
parts of the diaphragms, and thus, as the heating gases are constantly changed in
their direction of escape as represented by the arrows 6, and as thin films of water
are constantly being acted upon by them, the water is most rapidly heated, and
most economically as regards the consumption of the heating agent.
The burner 5, is shown detached in Figs. 3, and 4, and is situated below the
lowest diaphragm 3, and is formed with an annular mixing chamber 7, into a
nozzle 8, connecting with which the gas is led, inducing in its entry an indrawing
of air through apertures 9; the admixture of gas and air passes along the way 10,
which, at 11, is open into the mixing chamber 7, from which the admixed gas and
air escapes through concentric series of short tubes 12, at the outlets from which
it is ignited.
After traversing the flue space formed by the annular water chamber 2, hollow
water diaphragins 3, and through openings 4, as indicated by the arrows 6, the
beating gases escape, impinging just before their exit against a smaller water
diaphragm 13, connected with the upper diaphragm 3, just above the through
opening 4, therein, by means of tubular connections 14, and from which smaller
diaphragm the hot water escapes by piping 15, to where required.
16, represents the usual connectious for supplying the water to be heated;
17, the usual connection for supplying the gas, and which allows of the burner
being swung out from within the casing of the apparatus, and 18, a central
aperture in the casing below the burner for admitting air.

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 :-
The hereinbefore described improvements in or applicable to the construction of
water beating apparatus of the kind hereinbefore referred to, and which
improvements consist in the formation of an annular water chamber at intervals
apart with superposed hollow cross diaphragms communicating with such chamber,
and made with through flue openings situated in following diaphragm at different
parts thereof, and with a smaller water diaphragm (from which the hot water is
led to where required) connected with the upper diaphragm above the through
opening therein, and in the formation of the burner (situated below the lowest
diaphragm) with. an annular mixing chamber into opposite parts of which an
admixture of gas and air is led, and from which the admixture escapes by
concentric series of short tubes at the outlets of which it is ignited, substantially
as described with reference to the accompanying Drawings.
Dated this 17th day of March 1881