Improvements in or applicable to the Construction of Water Heating Apparatus.
Year: 1897

page_text: Date of Application, 23rd Sept., 1897-Accepted, 29th Jan., 1898
COMPLETE SPECIFICATION.
Improvements in or applicable to the Construction of Water Heating
Apparatus.
I, GEORGE SHREWSBURY, "Calda" Works, 65, Station Road, Camberwell,
London, S.E., Gas and Hot Water 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:―
This invention relates to certain improvements in or applicable to the construc-
tion 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 used for heating the water for baths and other
purposes.
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. 5. 7. 8.
which permit of a thorough circulation of the water in the manner shewn.
The lower annular diaphragm 3. is placed immediately over the burner 20. and
attached to the under part is a hollow tube 4. for conveying the cold water into
the heating apparatus, through the supply pipe 21 and cock at same level. After
traversing diaphragm 3. the water passes by means of a hollow tube 4. from the
upper part of diaphragm 3. direct into the annular water chamber 2. thus enabling
the water to be warmed before entering the annular water chamber 2.
Attached to the lower part of annular water chamber 2. is a series of hollow
tubes 6. for the circulation of the water between annular water chamber 2. and
diaphragm 5. thus giving a greater amount of heating surface.
Through diaphragms 5. and 8. there is made an opening 9. and through
diaphragm 7. are made two or more openings 10.
The openings are made at alternate ends of the same diameters, as will be seen
best in the plan view of water chamber 2. by reference to Fig. 2. or the openings 9
and 10.
These openings may be otherwise placed in the superposed diaphragms 3. 5. 7. 8.
so as to cause the heating gasses ascending from the burner 20. to have circuitous
passage between the various diaphragms and the surrounding annular water space.
The peculiar arrangement of the diaphragms 3. 5. 7. S. and of the flue openings 9.
10. formed therein causes the constant impingement of the heating gases ascend-
ing from the burner 20. 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 17. and as thin
films of water are constantly being acted upon by them is most rapidly heated and

page_text: After
most economically as regards the consumption of the heating agent.
traversing the flue space formed by the annular water chamber 2. hollow water
diaphragms 3. 5. 7. 8. and through openings 9. 10. 9. as indicated by arrows 17.
the heating gases escape impinging before their exit against a smaller water
diaphragm 11. just above the through opening 9. therein by means of tubular
connections 12. and from which smaller diaphragm the hot water escapes by outlet
pipe 16. to where required.
Above the smaller water diaphragm 11. is an annular metal deflecting cover 13.
the object of which is to prevent the too rapid escape of the heating gases, thereby
deflecting same on the upper surface of diaphragm 11. Through this deflecting
plate there are made two openings 14. 14. corresponding with those shewn 10. 10
in diaphragm 7.
Having now particularly described and ascertained the nature of my said in-
vention, 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 heating apparatus of the kind hereinbefore referred to and which
improvements consist in the arrangement of the hollow cross diaphragm 3. into
which the cold water is conveyed by hollow tube 4., and being chilled, it passes
on to annular water chamber 2. by means of hollow tube 4. fixed at top part of
diaphragm 3.
A series of hollow water tubes 6. conveying the water from the lower part of
annular water chamber 2. to under part of diaphragm 5.
The improved means of allowing the heating gases to escape by means of two or
more openings 10. 10 in diaphragm 7.
Also the metal deflecting cover 13. and the arrangement of two or more holes for
regulating the escape of the heating gasses substantially as described with reference
to the accompanying drawings.
1
1008
G. SHREWSBURY,
Calda" Works, 65, Station Road, Camberwell, S.E.
3