Improvements in Tubular Boliers.
Year: 1894

page_text: Improvements in Tubular Boliers.
I, ADRIAN VAN OVERBEEKE Chief Draughtsman of The Schönichen
Hartmann'sche, Schiffswerfte, Budapest, Austria-Hungary, 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 :-
The present invention relates to improvements in tubular boilers of the character
known as a water tube boiler having the following advantages viz. that most of its
component parts are made of the same dimensions and consequently are capable of
being manufactured in large quantities and are moreover readily exchangeable that
all the water tubes are readily accessible and consequently easy to clean and that
it combines a large heating surface and small weight whilst any required grate area
can be conveniently provided.
The invention is illustrated in the accompanying drawings in which :—
Fig. 1 is a longitudinal section.
Fig. 2 a cross section, and
Fig. 3 a front elevation of the boiler.
Fig. 4 is a somewhat modified construction in longitudinal section.
A cylindrical central drum a is connected by means of water tubes d with any
desired number of water chambers 6 arranged uniformly around the geometrical
centre of the drum a.
The water chambers are partly connected with one another by means of
tubes e.
Tubular connections lead from the upper group of water chambers b to
one or more upper circulating chambers g of cylindrical or other suitable shape as
desired.
These latter are connected with the lower water chambers by means of
tubes which are wholly out of the field of action of the heating gases so that
by this means a more than ordinarily energetic circulation of the water is ensured
as well as securing an entire obviation of or less liability to--shocks in the upper
drums.
A correspondingly modified arrangement is illustrated in Fig. 4 in which the
chambers are replaced by a number of larger combined chambers c.
From the grates which increase in size in proportion to the width of the
boiler the heating gases travel in the direction of the arrows around the water
tubes d and also around the central drum a and then escape after having also
suitably come in contact with a large portion of the chambers b. The
openings between the water chambers and also the side walls of the boiler are
filled up with fire-proof brickwork and are covered with sheet metal k or the
boiler may be enclosed in any other suitable manner by any suitable non-conductive
material or materials.
The removal or the insertion and the cleaning of the water tubes d can be
effected with the greatest ease through and from the central drum a-access to
which can be easily arranged for in any suitable manner.
A further great advantage consists in the fact that by the arrangement of the
chambers b grouped around a common centre and of the nest of tubes d the fire
passages or flues are almost completely closed in towards the outside so that there
is no unnecessary transmission of heat by the heating gases to the brickwork or
outside enclosing walls.

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 :-
1. A tubular boiler arranged and constructed with a longitudinal central water
chamber approximately cylindrical water tubes radially arranged all round said
central chamber an exterior chamber or series of chambers connected to each
other arranged concentrically all round said central chamber and connected to same
by said radial tubes a connection from said exterior chambers to one end of an
overhead circulating chamber or chambers and a second and separate connection
from the other end of said circulating chamber or chambers to the opposite side
of the exterior chamber or chambers all substantially in the manner and for the
purposes hereinbefore described.
2. A tubular boiler constructed with a central drum or chamber such as a which
is connected by means of water tubes d with any desired number of water chambers
such as b grouped around said central drum a said water chambers 6 communi-
cating with one another and being connected with one or more upper chambers
such as g substantially in the manner and for the purposes hereinbefore described
and illustrated in the drawings hereunto annexed.
3. A tubular boiler constructed with a central drum or chamber such as a which
is connected by means of water tubes d with any desired number of water chambers
such as c grouped around said central drum a said water chambers c communicating
with one another and being connected with one or more upper chambers such as g
substantially in the manner and. for the purposes hereinbefore described and
illustrated in the drawings hereunto annexed.
4. A tubular boiler arranged constructed combined and acting substantially in
the manner and for the purposes hereinbefore described and illustrated in the
drawings hereunto annexed.
Dated this 31st day of Dotsbar 1901
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.