Improvements in Water Tube Steam Generators.
Year: 1897

page_text: PROVIDIONAL DIVIFICATION.
Improvements in Water Tube Steam Generators.
I, EUSTACHIUS RADZISZEWSKI, of Vassileva, Sloboda, in the Province of Nijny
Novgorod, Russia, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a steam generator consisting of three or four external
walls made of corrugated sheet-metal in the form of hollow boxes, chambers, or
headers and rivetted to end plates. The walls or headers at opposite sides are
united by water tubes, and the third wall (if there be but three) has fixed to it
water tubes closed at their outer or free ends, one series of tubes being arranged
crosswise above the other series.
The said corrugated sheet metal box-shaped walls or headers are closed at each
end by plates rivetted thereto, and for greater rigidity and strength the opposite
sides of these hollow walls may be united by stay-bolts, or otherwise.
The closed water tubes may be provided internally with longitudinal partitions to
insure a more regular and energetic circulation of the water.
If the generator have four such walls or headers, the closed tubes are replaced
by tubes open at both ends which then serve to unite the opposite walls or
headers.
The box-shaped walls or headers are advantageously formed in two or more
parts so as to facilitate repair and cleansing of the generator, or the renewal of the
tubes. The walls or headers communicate with a steam drum and a mud drum
through suitable tubes or connections.
By disconnecting the tubes or connections, one or more of the walls or headers
may be removed together with their tubes, thereby permitting the generator to
be readily repaired or cleansed.
I may however dispense with the steam and mud drums, and in their place make
use of the upper and lower rows of the water tubes.
The mud drum can be made to support the entire generator, but it is obvious it
may be supported otherwise.
To enable the ready cleansing of the internal surface of the box-shaped walls or
headers, I provide these latter with a sufficient number of man-holes.
J
The generator is enclosed in a brickwork or other casing in any ordinary
manner, and is provided with furnace doors and with the usual appendages.
Dated this 3rd day of November 1897.

page_text: Improvements in Water Tube Steam Generators.
I, EUSTACHIUS RADZISZEWSKI, of Vassileva, Sloboda, in the Province of Nijny
Novgorod, Russia, Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the accompanying
drawings and to the letters and figures marked thereon, that is to say :-
This invention relates to water tube steam generators, and an important feature
thereof consists in forming such generators with hollow external walls made of
corrugated sheet metal, which serve as headers, and are closed at their ends by
metal plates riveted to them.
The water tubes are arranged crosswise between the headers, of which there may
be three or four. If only three headers be employed, they are arranged one at
each end and one at the side, and the water tubes connected with the latter are
closed at their outer or free ends.
And in order that my invention may be clearly understood, I will describe
the same fully by aid of the accompanying drawings, in which:
Fig. 1 is a longitudinal section of a steam generator embodying my im-
provements, and having only three walls or headers arranged as above stated,
and,
Fig. 2 is a transverse section of the same.
a, b and c are the three hollow walls or headers, of which a and b are arranged
tranversely at the front and rear, whilst c is arranged longitudinally at the side.
Each of these headers may consist of two or more parts, after the manner of the
side header c which, in the generator shown, is divided centrally into two sym-
metrical parts to facilitate cleaning and repairs.
d d¹ are the water tubes, the former of which are longitudinal and serve to con-
nect the front and rear headers a and b, while the latter tubes d¹ are connected at one
end to the header c, but are closed at the other end. The tubes thus form longi-
tudinal and transverse series, the rows in each series coming between those in the
other, and being cross-wise with regard to them.
These closed water tubes d¹ may have internal partitions or divisions to ensure a
more regular and energetic circulation of water in them.
e, ex, are steam drums, and f, f*, are mud drums, with which the headers
communicate.
g, g, are short connecting tubes inserted between the drums and headers, where
necessary.
In the example illustrated; the side header c communicates with the drums e and f
by two sets of connecting tubes, one for each of its parts, whilst the front and rear
headers a and b communicate with the drums ex and f*.
By removing the connections g, the parts of the header c can be readily with-
drawn for cleaning, or for repairs, since there is nothing at the opposite or closed
ends of their tubes to interfere with such withdrawal.
The parts are so arranged that the generator is inclined both longitudinally and
transversely, as shewn.
h, h, are manholes by which access can be had to the interior of the headers,
whilst i, i are cross stays for strengthening the sides of said headers.
The mud drums f, fx, may be adapted to serve as supports, as in the con-
struction illustrated, but, obviously, the generator may be otherwise supported.
The generator has a suitable brickwork or other covering or casing (not shown),
and is provided with furnace doors and other usual fittings.

page_text: If instead of having only three headers, as shewn, the generator were provided with
four, that is to say with another header opposite the side header c, then the tubes d¹
would be open at both ends and would connect the two side headers just as the tubes d
connect the front and rear headers.
In some cases, the upper tubes d, d¹ may be used as steam receivers, instead of
having steam drums.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. A steam generator having longitudinal and transverse hollow walls or headers,
and having water tubes arranged in crosswise series, row above row, these tubes
either opening at both ends into headers, or being closed at one end so as to facili-
tate removal for clean or repairs, substantially as described.
2. My improved water tube steam generator, substantially as hereinbefore de-
scribed with reference to the accompanying drawings.
Dated this 3rd day of August 1898.
ERNEST DE PASS,
Chartered Patent Agent, 78, Fleet Street, London, and
5A, Market Street, Nottingham, Agent for the Applicant.