Improvements in Vertical Steam Boilers.
Year: 1895

page_text: Date of Application, 12th July, 1895-Accepted, 17th Aug., 1895
COMPLETE SPECIFICATION.
Improvements in Vertical Steam Boilers..
I, AUGUST SCHNAKENBERG, Engineer, of 1A Rosenauerstrasse Barmen
Rittershausen 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 improved boiler construction is adapted or intended to be used for small
establishments and to afford a practicable and complete application of the heating
gases, a rational removal of the boiler deposit, and finally, the facility of attending
to repairs when required.
i
The first named object is reached by constructing the boiler as a combined water
and tubular boiler; the second object is obtained inasmuch as it may be easily
taken apart. The heating tubes and the smoke tubes as well as all the inner parts
may be laid free and made accessible on taking off the steam dome whereupon
incrustation can easily be removed. The third object is reached by the capability
of the boiler for being taken apart.
The invention is illustrated in the annexed drawings, in which,
Fig. 1 is a vertical section of the boiler on the line x-x Fig. 4.
Fig. 2 a horizontal section on line y-y Fig. 1.
Fig. 3 a horizontal section on line - Fig. 1.
Fig. 4 a plan view.
.. Fig. 5 shows an arrangement in which the emanating gases are used for the
exterior heating of the boiler jacket.
The firebox D being accessible through door E and containing the grate F is, by
means of the intermediate piece G, upwardly extended by an eccentrically
arranged fire tube H. In said tube are inserted cross heating tubes A and A', the
erds of which are hammer tightened in the wall of the fire tube H. The latter is
at its upper end connected with the boiler cap I by means of screws i.
Above the
said cap I is placed the steam dome C screwed on to the boiler cap and closed by
a plate K which is, by means of the angle iron ring L and the flat iron ring M,
screwed on to the said dome.
The gases developed in the fire-box D ascend or are led away through the
heating tube H, and after passing the cross tubes A. and A¹ ascend up and pass
downwardly as indicated by the arrows through the elbow pipes B into the smoke-
box N. This box is secured to the boiler jacket by means of angle irons and
carries the upright smoke-shaft Q.
Instead of the low-smoke box N another may be employed reaching up to the
upper edge of the boiler, as shown in dotted lines at N' in Fig. 1, which would permit
of more fully taking advantage of the outer jacket as heating surface.
The jacket is composed of three parts, namely the upper boiler cover I, the
upper cylindrical part P and the lower part Q. These parts P and Q are fastened
together just above the top of the fire-box by means of angle iron rings R. The
jacket part P is secured on to the flange like upper end of the vertical fire-tube H
by means of the cover I. On loosening these screws the jacket may therefore be
taken off the boiler, whereby the tube H as well as the cross beating tubes A
and A¹ and the elbow tubes B are laid free thus admitting of the boiler being
conveniently cleaned.
In Figs. 1 to 4 the fire-tube H is eccentrically fitted to the fire-box D the
than 12 hainn annend at the book of the t have midh H
MAN AQuall

page_text: well be placed concentrically over the fire-box, and the elbow tubes arranged
around the said tube H, which modification is illustrated in Fig. 5, but in this
arrangement it is understood that the smoke-box N surrounds the jacket and
extends up to the top of the latter, whereby the entire outer surface of the boiler
jacket is transformed into a heating surface.
The boiler thus meets all requirements as a steam generator for small establish-
ments. It offers a large heating surface with great working power, while it
requires little attendance; the small expense for fitting up this apparatus will
also contribute towards recommending its introduction into the smaller
establishments.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is ;-
1. A vertical steam generator capable of being taken apart, comprising a main
fire-tube placed on or over the fire-box and provided with cross heating tubes,
elbow tubes leading downwardly from the steam-dome through the space between
the fire-tube and boiler jacket, for conveying the heating gases from the boiler to
the smoke-box the latter formed crescent shape on plan and supplied with a
chimney tube.
2. A. vertical steam generator capable of being taken apart, comprised of a large
fire-tube placed concentrically or otherwise on the fire-box and provided with cross
heating tubes, elbow tubes leading downwardly from the steam dome, and a smoke-
box extending up to the top of the boiler jacket for transforming the boiler jacket
into a heating surface.
All substantially as illustrated and described and for the purposes set forth.
Dated this 12th day of July 1805
.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to the Applicant.