Year: 1886

page_text: Date of Application, 31st Dec., 1886.
Complete Left, 5th May, 1887.
Complete Accepted, 7th June, 1887.
We GUSTAY DÜRR and HEINRICH CONRAD of Ratingen near Düsseldorf in the
Kingdom of Prussia and German Empire manufacturers do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in tubular boilers and consists in so
arranging and constructing the feed pipe connections and the heating tubes that such
parts can easily and readily be removed or access obtained thereto for cleaning or
other purposes such boilers being especially applicable for use where a very dirty or
impure water has to be used.
For this purpose according to our improvements the boiler is constructed as
follows:
The feed pipes are arranged inside the heating tubes the feed pipes being connected
with each other by each having a triple conical ▼ piece pipe or tube at the end thereof
in such a way that the cones (i.e. the conical T pieces) introduced into each other
form a cone prolonged over the entire length of the distributor-this cone being closed
at one end by a cap while the other end is fixed in a conical ring through which the
feed water enters.
These pieces may be easily and readily removed by simply moving the feed pipes
on either side laterally whereby the T piece is disengaged and can then be removed
through the mouth or opening which is provided opposite each T piece each such
T piece always being smaller than such mouth or opening.
Instead of the arrangement of cones the feed water may be separated and circulated
by having a separating plate through which the ends of the feed pipes are secured
instead of to the cones thus the feed water coming from one of two auxiliary boilers
on the top (into one of which the feed water is supplied while the superheated water
discharges its steam in the other) is conducted into channels on one side of such
separating plates and passes through the smooth inner pipes and returns down the
outer heating tubes to the other side of the side of the separating plates and thence
escapes to the other upper boiler where it discharges its steam.

page_text: These separating plates may be pivoted or hinged or they may simply rest in grooves
or slots provided for them or be otherwise suitably arranged so that when the feed
pipes which come through them are withdrawn through the openings provided in
the boiler for the purpose of obtaining access thereto opposite each heating tube-
the said plates can be turned on hinges or pivots or otherwise readily removed so that
easy access can be had to the heating tube for cleaning or other purposes.
The opposite end of each heating tube is closed by a cap advantageously made of
steel which is screwed down by a screw acting in a cross head or hook the two ends
of which catch and engage the projecting ends of two half hoops which are caught
under a metal rim formed on the heating tube or pipe; so that the cap can be
securely fastened down or can be readily removed-thus with the inner tube or feed
pipe removed (as before described), the heating tube is open at both ends thus affording
easy access.
Dated this 21st of Danamal
1002
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Applicants.
We GUSTAV DÜRR and HEINRICH CONRAD of Ratingen near Düsseldorf in the
Kingdom of Prussia and German Empire Manufacturers 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 improvements in tubular boilers and consists in so
constructing and arranging the feed water pipe connections and the heating tubes that
such parts can easily and readily be removed or access obtained thereto for cleaning or
other purposes; such boilers being especially applicable for use where a very dirty or
impure water has to be used.
And in order that our invention may be easily understood and readily carried into
practice we will proceed to fully describe the same with reference to the accompanying
drawings Figures I II and III of which show sectional side elevations of different
arrangements of the separating plates.
Figure IV shows an end view of a boiler (with outside plate removed) partly in
section showing another form of distributor different from Figures I, II and III.
Figure V shows an end view and a sectional plan of the distributor arranged in a
similar manner to Figures I, II, and III.

page_text: Figure 1 shows a sectional side elevation of arrangement of parts as in
Figure V.
Figures VII. VII. and LX show views of the arrangement and construction of the
opposite ends of the heating tubes and apparatus for closing the same and Figure X
shows a plan on line E F,-Figure IV of a row of heating tubes and the feed pipes
therein connected by a prolonged cone as we will now proceed to describe with
reference to Figures IV and X.
The feed pipes are arranged inside the heating tubes e the feed pipes being
connected with each other by each having a triple conical T-piece, pipe, or tube H at
the end thereof in such a way that the cones (i.e. the conical T-pieces H) introduced
into each other from a cone prolonged over the entire length of the distributor EF
Figure X this prolonged cone being closed at one end by a cap g¹ while the other end
is fixed in a conical ring m through which the feed water enters and returns by the
heating tubes e as indicated by the arrows.
These T-pieces H may be easily and readily removed by simply moving the feed
pipes & laterally on either side whereby the T-piece H is disengaged and can then be
removed through the mouth or hand opening H which is provided in the boiler
opposite each T-piece, each such T-piece H always being smaller than such mouth
or opening H, and thereafter the inner tubes d can be withdrawn giving free access
to the heating tubes e which can be readily opened at their opposite ends by removing
the caps or covers therefrom (as hereinafter described) thus leaving a free passage
right through each heating tube for cleaning or other purposes.
In Figures V and VI instead of the arrangement of cones the feed water is separated
and circulated by the separating plate a through which the ends of the feed water
pipes & are secured instead of to the cones thus the feed water (flowing in the direction
of the arrows) coming from one of two auxiliary boilers p and q on the top (into one of
which the feed water is supplied while the superheated water discharges its steam in
the other) is conducted into channels on one side of such separating plates and
passes through the smooth inner pipes d and returns down the outer heating tubes e to
the other side c¹ of the separating plates a and thence escapes to the other upper boiler
where it discharges its steam.
These separating plates may be pivoted as at y in Figures V and g in Figure VI;
or referring to Figure I the plate may simply rest between the collars or bands g
which are mounted on the bolts the depth of the collar or band on the underside
being double the depth or thereabout of the collar g² on the upper side of the bolt *
therefore the slot or recess formed thereby is about double the depth of the slot or
recess a² and consequently the plates 2 can easily be raised (after drawing out the
pipes & through the opening provided for that purpose) and laid down in the position
shown by the dotted lines ff.
In Figure II the plates are rotatory on the pivots 2 as in Figure VI and
are also provided with the band or collar g* on the bolt against which they press or
tighten.
While in Figure III the separating plates 3 are suitably secured by bolts c³—in such
a way as to be easily removed-to the bands or collars g³ fixed as before on the stay
bolts ².
So that in all these three arrangements Figures I, II and III when the feed water
pipes which come through the separating plates- are withdrawn through the
openings provided in the boiler for the purpose of obtaining access thereto opposite
each heating tube e the said plates can be turned on their hinges or pivots or otherwise
readily removed so that easy access can be had to the heating tube e for cleaning or
other purposes.
Referring to Figures VII, VIII and IX the opposite end of each heating tube e is
closed by a cap o advantageously made of steel-which is screwed down by a screw r
acting in a cross head or hooks the two ends of which catch and engage the projecting
ends of two half hoops which are caught under a metal rim i formed on the
heating tube or pipe e so that the cap o can be securely fastened down or can
be readily removed thus with the inner tube or feed water pipe & removed

page_text: (as before described), the heating tube e is open at both ends thus affording easy
access.
Figure VIII shows the cap o in section in position fixed on the heating tube e and
an end view of the two half hoops on the line a b.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim (as our
improvements in tubular boilers) is :-
1. The use and application of the conical T-pieces H for the purpose of connecting
the feed water pipes d d constructed and arranged substantially in the manner and for
the purposes hereinbefore described and represented in Figures IV and X of the
drawings hereto annexed.
2. The use and application of the conical T-pieces H in such a way that they form a
prolonged cone the whole length of the distributor or chamber E F Figure X-one end
of such conc being secured to the conical ring m whilst the other end is closed by a
cap g substantially in the manner and for the purposes hereinbefore described and
represented in Figures IV and X of the drawings hereunto annexed.
3. The plates (rotatory on the pivot g or hinged on pivot 91) which receive
the smooth inner feed water circulating pipes d and are fixed between the oblique
-irons in such a way as to allow after removing the inner pipes d-their
rotation to about 90° substantially in the manner and for the purposes hereinbefore
described and represented in Figures V and VI of the drawings hereto annexed.
4. The plates t inserted between the bands or collars g² fixed on the stay bolts & in
such a way that the plates 2 can be raised and taken out substantially in the manner
and for the purposes hereinbefore described and represented in Figure I of the
drawings hereto annexed.
5. The plates t rotatory round pivot and pressing or bearing against bands g
(Figure II) and the plates t³ fastened by screws hooks or bolts to the bands g³
(Figure III) which are secured to bolts all substantially in the manner and for the
purposes hereinbefore described and represented in Figures II and III respectively of
the drawings hereto annexed.
'
6. The two half hoops kk placed behind the rim i and caught up by the double hook s
through which the screw tightens the cap o for closing the end of the heating tube e
all the parts being arranged and constructed substantially in the manner and for the
purposes hereinbefore described and represented in Figures VII VIII 1X and X of
the drawings hereto annexed.
7. The improved arrangement construction and combination of parts of tubular
boilers substantially as and for the purposes herein before set forth and represented in
the accompanying drawings.
Natal thi zil
C
T
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