Year: 1885

page_text: We THEODOR SCHILLER and PAUL BRENNICKE both of Berlin in the Empire of
Germany 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 object of this Invention is to construct a steam generator that is free from
the objections attending ordinary steam generators and it consists in constructing
and arranging the parts in the manner hereinafter described whereby the following
advantages are realised namely-A large area of heating surface is secured with an
absence of large steam domes, safety from explosions, great facility for cleaning,
cheapness of construction and very great economy of fuel.
And in order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheets of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figure 1 of the accompanying drawing represents a longitudinal section of a
boiler or steam generator constructed according to our Invention the section being
taken through the centre of the boiler.
Figure 2 is a transverse section taken along the line 1-2 figure 1.
Figure 3 is a longitudinal section taken along the line 3-4 figure 2.
Figure 4 is a transverse section taken along the line 5-6 figure 1.
The improvement consists essentially in the arrangement of the four boilers or
generators A B. C. D placed at an angle of 90 degrees relatively to each other
around a common centre as shewn clearly in Figures 2 and 4 the upper cylindrical
boiler A and the lower cylinder or generator B being connected together by a
vertical tube E also communicating with the two side generators C. and D through
a horizontal tube F-The side generators C and D are each composed of two
cylinders as shewn in figure 3 connected by tubes G-Partitions H of iron or other
suitable material are provided between the horizontal rows of tubes for the purpose
of conducting the products of combustion between the rows of tubes so as to bring
them into intimate contact with the latter.
In order to facilitate cleaning out the boiler removable covers J (figure 3) are
bolted to the ends of the side generators-This arrangement presents the advantage
over ordinary boilers that it renders it unnecessary to wait for the boiler to cool
.

page_text: before it can be cleaned as the generators C and D and tubes G can be cleaned
from the outside of the boiler by simply removing the covers J.-Explosions are
rendered altogether impossible the arrangement of the individual tubes being such
that no excess of pressure can be exerted upon them.
The products of combustion from the fireplaces K pass over the bridge L into a
flue or combustion chamber M and through an orifice N into a return flue O leading
back to the front of the boiler to an orifice P opening into a flue Q-From the
flue the gases pass through an opening R into a flue S in which they come into
contact with the upper chamber A and then through an opening T into a flue U
where they finally heat the lower chamber D before escaping into a chimney S¹-
The heating gases being caused by this arrangement of the flues M, O and Q to come
in close contact with the sides of the tubes a maximum of heating effect is obtained
with a corresponding economy of fuel-An important advantage is also obtained by
the impossibility of incrustations being formed in the bottom chamber which is not
brought in contact with the highly heated gases.
Having now particularly described and ascertained the nature of our said
Invention and the manner in which the same is to be performed we declare that
what we claim is
First. A steam generator composed of vessels arranged relatively to each other
and connected by tubes or passages substantially as hereinbefore described and
illustrated in the accompanying drawings.
Second. In steam generators of the kind hereinbefore described the two side
vessels C and D composed of two chambers (one at the front and one at the back)
connected by tubes or passages G substantially as hereinbefore described and illus-
trated in the accompanying drawings.
Third. In steam generators of the kind herein before described the removeable
covers J. J. at the ends of the side vessels C and D substantially as and for the
purpose herein before described and illustrated in the accompanying drawings.
Fourth. In steam generators of the kind hereinbefore described the partitions
H. H between the tubes G substantially as and for the purpose herein before
described and illustrated in the accompanying drawings.
Dated this 90th der of October TOOK