AN IMPROVED STEAM GENERATOR
Year: 1885

page_text: I ALPHONSE REIS Civil Engineer in the care of Messrs. E. Bede & Co. rue du
Marteau Brussels, do hereby declare the nature of said invention for AN IMPROVED
STEAM GENERATOR, to be as follows:-
The improved steam generator belongs to the class of multitubular boilers and
is designed to combine the following advantages: A large heating surface in a
small cubical space, safety from explosions, facility of repairs, rapid production of
dry steam, and lightness.
The boiler chiefly comprises a great number of tubes of small diameter (from 0,005
to 0,05 metres inside) arranged in batteries, groups or series and communicating at
the ends with a pair of boxes formed of open frames placed side by side and closed
on each side by a coverplate, the whole being held together by bolts. There are
as many frames at each end as there are groups or series of tubes, and the bolts,
preferably 4 in number, which pass across the boxes from one coverplate to the
other, also serve to keep the joints tight.
In a flue formed above the generator proper and receiving the hot gases on their
way to the chimney, is placed a pipe coil or serpentine, through which passes the
steam from the generator proper for the purpose of being dried or superheated.
From the said drying or superheating coil the steam is conducted into a dome
or receiver situated at the top of the generator and preferably composed of a pair
of cylindrical vessels, the said receiver communicating with the bottom of the
generator by means of a pipe which serves to return to the boiler any water of
condensation, which may be deposited in the receiver.

page_text: I, ALPHONSE REIS, Civil Engineer, in care of Messrs E. Bede & Co, rue du
Marteau, Brussels, 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 has for its object 1) to reduce considerably the size of the present
multitubular generators, the heating surface remaining the same 2) to allow
(a) the generator to be completely dismounted or taken to pieces by the aid of
a few bolts.
(b) a broken or defective piece to be replaced in a few minutes.
The accompanying drawing shows the improved steam generator in longitudinal
section, elevation and plan.
This generator consists essentially of any convenient number of series bundles
or batterics A of tubes B of very small diameter, that is to say from 0.005 "/m
to 0,050 / inner diameter, and made of a metal, which is simultaneously very
strong and a good conductor of heat.
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These tubes are connected by rows (two or three rows per series) and have any
convenient length.
They are fixed at the two extremities in frames C, which may be made of cast
iron, but preferably of wrought iron or steel and form chambers &; these frames
are fitted together so as to form on each side a common chamber d for the tubes;
on each side of the chamber d is situated a cover E and bolts or holdfasts F,
maintain, at each of the two extremities of the boiler, the frames C and their
covers E, at the same time ensuring the water tightness of the joints between tho
frames, which joints have previously been formed or lined with incombustible
mastic or cement.
Owing to the inclination of the tubes, the steam, as soon as it is generated, rises
through the tube G into cylindrical receivers H kept continuously at a temperature
of at least 175 to 200 degrees Centigrade, connected with one another by tubes and
placed in a chamber I receiving the hot gases proceeding from the generator. The
steam having passed through these receivers H in a zig-zag line enters a steam
reservoir, consisting of two cylinders K K of sheet iron or copper; the water
formed by the steam condensed in the reservoirs K K¹ runs through a special
tube L to the bottom of the generator. Thereby a continuous current can bo
established, which thus facilitates the boiling of the water and the formation of
steam, at the same time keeping in the reservoirs K K' the steam in a perfectly
dry and hot state.
This boiler or generator comprises all the ordinary mountings, such as safety
valves M, manometer N and a water level-indicator O; doors P P¹ of sheet iron
allow the tubes to be inspected and if necessary replaced, Q is the fire door and R
the chimney.
The aboved described generator may be advantageously applied to portable and
sem! portable engines,

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:-
In tubular steam-generators:
1. The use of tubes of very small diameter, (0.005 to 0.05 metres inside) and in
great number, arranged in independent batteries A terminating in front and at the
back in a box or chamber d formed by frames C having the width of the battery,
said frames being fitted together (with interposed packing material) and tightened
by means of bolts which hold at the same time the covers E serving to close
laterally the front and the rear chambers d of the generator.
2. The addition of a steam drying apparatus or serpentine, formed of cylindrical
receivers H connected by pipes and placed in an upper flue of the generator, the
steam being caused to pass through the said drying apparatus in a zig-zag line.
3. The use of a pipe adapted to conduct the water of condensation from the
steam reservoir to the lower part of the generator, so as to establish a continuous
circulation and facilitate evaporation.