Year: 1896

page_text: I, ARTHUR BRISON of Marchienne-au-Pont, Belgium, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
The Boiler, which is the object of this invention can be installed in a very
limited space and requires no masonry. It is set up as readily as a locomobile.
The boiler in question comprises an outside casing and an interior one held at
the required distance by cross-bars.
The interior chamber of the interior casing is occupied by tubes, 12 centimeters
in diameter, laid over each other, cross-wise, in layers. These tubes are fixed in
the interior casing and open out, or terminate, in the space between the two
casings. Facing each tube, there is formed, in the outer casing, an opening,
furnished with a plug, so that a person may put his arm into the tube. The
layers of tubes are surmounted by a water reservoir, communicating with the
interior of the Boiler and with the outer water and steam reservoir.
In the lower part of the Boiler, is the hearth or entrance for the combustion gases
which rise towards the escape-pipe, after having heated the tubes and the interior
casing. Above each layer of tubes, there are two or more hollow cross-bars,
sustaining the two casings and terminating in the interior chamber.
Into these cross-bars, I introduce the air-current pipes connected with the pipe
which brings steam from the outer reservair to clean the outer surface of the
tubes and thus preserve their vapourizing power.
At the bottom of the Boiler, ports are provided for cleaning.
The tubes being of a rather large diameter and of limited width, the difference
of expansion which is noticed in multitubular boilers, between the tubes nearest to
and those which are furthest from the hearth does not occur in my system.
The relation between the heating surface and the surface of the fire-bars is
considerable; hence the tubes can be easily disincrusted and are not liable to be
burnt, as is the case in small-section tubes."
The construction according to my system may not only be taken vertically but
also horizontally.
Dated this 20th day of October 1906
L. DUVINAGE,
Agent for Applicant.

page_text: formed to be particularly described and ascertained in and by the following
statement:-
The boiler invented by me is represented in the annexed drawing: Fig. I is
an elevation partly in section; Fig. II is a similar view at right angles of Fig. I;
Fig. III is a plan view.
The fixing of my boiler does not necessitate a large space or any stone-work. It
is fixed with the same facility as a movable steam-engine.
The boiler comprises an exterior shell E and an interior shell D held together,
at any distance required, by means of cross-pieces L. The interior chamber of
the shell 1) is occupied by tubes C, 12 c/ms. in diameter, superposed in cross layers.
These tubes are fixed into the shell D and open into the space between the two
shells. In front of each tube a hole, supplied with a plug 1, is made in the out-
side shell for the introduction of the arm into the tube. The rows of tubes are
surmounted by a water reservoir, B communicating with the interior of the boiler
and with the outside water and steam chamber A.
At the lower part of the boiler is the furnace F, from which the heat rises to
the outlet H after heating the tubes and the inside shell.
Above each row of tubes are two or more tubes M passing through the
Into these cross-tubes are
shells D, E and opening into the inside chamber.
introduced the steam pipes connected with the pipe G which conducts the steam for
cleaning the outside surface of the tubes and to preserve for them their vaporizing
power.
At the bottom of the boiler are openings K for cleaning. The tubes being of
rather large diameter and of limited length the difference of expansion which is
presented in miltitubular boilers between the most remote tubes from and the
nearest to the furnace is annulled with my system.
The proportion of the heating surface with that of the fire-grate is considerable
the tubes can easily be disincrusted and are not exposed to being burnt as tubes
of small section.
My system is used vertically as shown in the design but it may also be used
horizontally.
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:
1. A steam-boiler without masonry distinguished by the arrangement in the
body of the boiler, which body is formed by two concentric envelopes, of tubes
of 12 c/ms section in superposed and crossed layers so as to obtain as great a pro-
portion of heating surfaces as possible, avoid burning and allow an easy
disincrustation.
2. In the boiler specified in 1 the arrangement of hollow stays M and of a
steam-pipe G to clean the exterior surface of the tubes and to maintain their
vaporizing power.
3. A boiler without masonry substantially as described and shown.
1907
L. DUVINAGE,
Agent for Applicant.