Improvements in Apparatus for Heating Water and for Generating Steam.
Year: 1888

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating Water and for Generating
Steam.
I, ALFRED CATCHPOLE, of Geneva, in the County of Ontario, and State of
New York, United States of America, Manufacturer, do hereby declare the nature
of my invention for "IMPROVEMENTS IN APPARATUS FOR HEATING WATER AND FOR
GENERATING STEAM," 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 the class of boilers in which the water compartments
consists of hollow rings mounted horizontally one upon the other and concentrically
with the fire pot.
And the invention consists in an improved construction and combination of parts
which form a boiler of great efficiency with economy in the consumption of fuel.
The invention is fully illustrated in the annexed Drawings in which Fig. 1 is partly
a front elevation and partly a vertical sectional view of a boiler embodying my
improvements, Fig. 2 is a horizontal transverse section on line a, a, Fig. 1, Fig. 3
is a top plan view of the same, Fig. 4 is a vertical transverse section on line z, z,
Fig. 3, Fig. 5 is a vertical transverse section of a boiler embodying modifications of
my invention, and Fig. 6 is a horizontal transverse section on line y, y, Fig. 5.
Similar letters of reference indicate corresponding parts.
A-represents the ash-pit which at the same time constitutes the base of the boiler.
B-denotes the fire pot, formed of a hollow annular shell to which is connected the
feed water pipe or water inlet pipe a. Over the fire-pot and concentric therewith
are annular water-pipes-D-D-D-and-E-arranged horizontally one above the
other with spaces between them as shown in Figs. 1 and 4 of the drawing. Said
pipes communicate with each other and with the fire-pot shell-A-by means of
vertical pipes-d-d-d-interposed between said parts and connected thereto, and
in order to cause a more perfect circulation of the water in the boiler I arrange the
vertical pipes-d-d-d-alternately at diametrically opposite points in the
circumferences of the pipes-D-D-D.
The pipes-d-d-d-1 form integral with the pipes D-D-D-by casting
coinciding sections of the pipes-d-d-on the respective pipes-D-D',—the ends

page_text: of said pipe sections being easily trimmed or planed to properly seat them one upon
the other and thus materially reducing the cost of construction.
The pipes-D-D-D-and-E-are secured in their respective positions by means
of tie rods--passing vertically through the pipes-d-d-d-and through tubular
nipples--cast on the horizontal pipes in range with the vertical pipes and
planed at the same time with the pipes-d-d.
The uppermost pipe-E-serves the function of a dome when the boiler is used for
generating steam and as an additional water ring when used for heating water.
From this pipe is extended the hot-water or steam-pipe-c-which leads to the usual
radiators in the apartments to be heated. Said dome communicates separately with
the two sets of pipes-D-D'--and at diametrically opposite points in the circum-
ferences of said pipes, thereby causing a circulation of water across the interior of the
dome. The pipes-D-D-D-are enclosed in the combustion chamber-F-which
is mounted on a flange--projecting outward from the top of the fire-box-shell.
The pipe-E-I cast with an outward projecting rim-,-which latter terminates
with a downward deflected flange which laps over and embraces the top portion
of the shell of the combustion chamber-F. I also cast the aforesaid pipe with an
inward projecting rim-e-from which I suspend the magazine-C-which is formed
at its upper end with a flaro-f-by which it is hung on the aforesaid rim. Said
magazine being arranged concentric with the pipes-D-D-D-and combustion
chamber shell-F-and forming an annular combustion chamber around the pipes.
In the operation of the described boiler the products of combustion ascending
from the fire pot are diffused through the annular combustion chamber by the central
position of the magazine, and in rising in the said combustion chamber to the exit
Hue, the products of combustion are caused to circulate around and between the
pipes D-D-D-and impinge the same so as to thoroughly heat them.
The heat being most intense in the fire pot causes the water to expand more rapidly
therein than in the pipes-D-D-D-and-E,-and consequently the heated water
ascends from the fire pot-shell-B,-through the pipes ddd and successively in
opposite directions around the two halves of each pipe-D-and-E-and thence
through the pipe--to the radiator and back through the pipe-a-to the boiler.
Crepresents an extension of the magazine-C-projecting above the boiler and
provided with a feed door-g-and with a branch pipe-u-extended to the exit
pipe for the purpose of carrying off the gases which may rise in the magazine.
"When a boiler of greater capacity is desired, I employ two or more sets of
pipes D-D-and-D-D-as represented in Fig. 5 of the drawing. The
pipes-D-D-being of smaller circumferences than the pipes-D-D-and
arranged concentric within the same. The two sets of pipes are connected with the
fire pot B-at diametrically opposite points by the pipes-d-d-tapping
offsets -B-B of the top portion of the fire-pot-shell.
The top pipe or dome--is enlarged in width so as to reach across the two sets
of pipes D-D-and communicates with the same at diametrically opposite points
by the pipes-d-d-and thus said sets of pipes communicate with each other at the
top by the medium of the dome-E.
When the boiler is in operation for generating steam the water rises from the fire-
pot shell-A-through the inner set of pipes-D1-D₁-and descends through the
outer set-D-D.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is
:
1-In combination with the combustion chamber-F, the annular pipe-E-
formed with the outward projecting rim--and downward deflected flange-on
said rim and embracing thereby the top portion of the combustion chamber,
substantially as described and shown.
2-In combination with the combustion-chamber-F,-annular pipes-D-D-
and vertical connecting pipes-d-d,-the annular pipe-E-formed with the

page_text: inward projecting rim-e-outward projecting rim--and downward deflected
flange on the latter rim embracing the top portion of the combustion chamber,
and the magazine-C-provided with the flare and suspended thereby from
the internal rim-e -substantially in the manner described and shown.
3-The combination with the hollow fire-pot shell-B,-of the sets of
pipes D-D-and-D¹-D¹-arranged concentrically with each other and com-
municating separate from each other with the interior of the shell-B-respectively
at diametrically opposite points in the circumference thereof and the dome-E-
arranged over the sets of pipes and communicating separately with the same at
diametrically opposite points in the circumferences thereof, whereby the water is
caused to circulate across the interior of the dome, substantially as described and
shown.
AUCH IN COLE
1034
ALFRED CATCHPOLE.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.