IMPROVED ARRANGEMENTS OF GAS FLUES FOR STEAM BOILERS, EVAPORATING PANS, AND THE LIKE
Year: 1880

page_text: LETTERS PATENT to Carl Kesseler, of 63, Mohrenstrasse, Berlin, W., in the
Empire of Germany, Patent Solicitor and Civil Engineer, for an Invention of
"IMPROVED ARRANGEMENTS OF GAS FLUES FOR STEAM BOILERS, EVAPORATING
PANS, AND THE LIKE." A communication from Carl Haupt, at Brieg, Kingdom
of Prussia, Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Carl Kesseler at the Office
of the Commissioners of Patents on the 13th April 1880.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empire of Germany,
Patent Solicitor and Civil Engineer. "IMPROVED ARRANGEMENTS OF GAS FLUES
FOR STEAM BOILERS, EVAPORATING PANS, AND THE LIKE.” A communication from
Carl Haupt, at Brieg, Kingdom of Prussia, Empire of Germany.
This Invention consists, first, in using the fire-box of a locomotive or other tubular
boilers, or in stationary boilers the space below or in front of the boiler, as a
generator, in which combustible gases are produced by means of heaping up the
fuel.
Second. In constructing a vault above this generator which consists of tubular
vault pieces made of fireproof material. These pieces have narrow lateral ribs by
means of which they support one another, leaving narrow slots between each other,
through which slots the generated gases will flow. The slots may be arranged
lengthwise or crosswise.
In the interior of these slots or when leaving them the gases mix with atmospheric
air which flows through the tubular channels which form the vault, and is admitted
to the slots by suitably arranged openings. The air is brought to a high degreo of
heat in the vault channels which are always hot, and meets in a state of fine
division with the gases so that almost complete combustion of the same takes
place.
To allow of the instantaneous interruption of the firing I apply slides which are
capable of covering the slots and the openings for the air, and can be actuated
either from the front or the sides of the boiler.
The air for the combustion may also be preliminarily heated in a system of tubes
before entering the vault channels.
The novelty in my system of flue-firing consists in the construction of the
generator vault from hollow tubular pieces which leave slots between each
other, through which the gases flow, further the introduction of air for the
combustion to the gases of the generator through the hollows and slots of the vault.
and the arrangement for closing the slots, which consists of slides closing the
same.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carl Kesseler in the Great Seal Patent Office on the 6th: October
1880.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empire of Germany'
Patent Solicitor and Civil Engineer. "IMPROVED ARRANGEMENTS OF GAS FLUES
FOR STEAM BOILERS, EVAPORATING PANS, AND THE LIKE." A communication from
Carl Haupt, of Brieg, Kingdom of Prussia, Empire of Germany.
This Invention consists, first, of using the fire-box of locomotive or other tubular
boilers or, in stationary boilers the space below or in front of the boiler, as a
generator in which combustible gases are produced by means of heaping up the
fuel. Second, in a vault above this generator which consists of tubular vault pieces
made of fire proof material. These pieces have narrow lateral ribs by means of
which they support one-another, leaving narrow slots between each-other through
which slots the generated gases will flow. The slots may be arranged length-wise
or cross-wise.
In the interior of these slots or when leaving them the gases mix with atmospheric
air which flows through the tubular channels which form the vault and is admitted
to the slots by suitably arranged openings.
The air is brought to a high degree of heat in the vault-channels which are always
hot, and meets in a state of fine division with the gases, so that almost complete
combustion of the same takes place.
To allow of the instantaneous interruption of the firing I apply slides which aro
capable of covering the slots and the openings for the air and can be actuated
either from the front or the sides of the boiler.
The air for the combustion may also be preliminarily heated in a system of tubes
before entering the vault channels.
The novelty in my system of flue firing consists in the construction of the
generator vault from hollow tubular pieces which leave slots between cach
other through which the gases flow; further, the introduction of air for the
combustion to the gases of the generator through the hollows and slots of the
vault and the arrangement for closing the slots, which consists of slides closing
the same.
Reference being had to the accompanying Drawings in which like letters
represent like parts, Figs. 1, 4, and 6 are vertical sections through the fire-boxes of
three different kinds of boilers; Figs. 2, 5, and 7, longitudinal sections of the
fire-boxes of the same boilers; and Fig. 3 a plan of the vault pieces in the fire-box
of Fig. 2, the boiler itself being removed. H is the ashpit below the fire-bars, and
G the space in which the fuel is heaped upon and above the fire-bars; D, D, D, D,
Figs. 1 and 6, are the vault pieces placed together so as to form the vault; V, the
combustion chamber in which the air and gases mingle; C, C, C, are the tubular
channels through which the air enters and subsequently passes through the narrow
passages F, F, F, into the combustion chamber. I is the fire door through which
the fuel is fed, and b, b, b, the narrow ribs for keeping the vault pieces apart and in
their proper places; K, K, K, are the doors or slides for closing the channels C.
In Figs. 3, 5, and 7 these are shown as hinged flaps outside the boiler, and in
Fig. as slides r, r, r, which cover the narrow passages between G and V.
The gases generated in G pass by the narrow openings between the vault pieces
into V, heating the vault pieces, through the inside of which, by means of the
tubular passages C, the external air enters and combines in said passages, or in the
combustion chamber V with the gases.
•
Having now described this Invention and the manner of performing the same,

page_text: I wish it to be understood that what I claim and desire to protect under the
herein before in part recited Letters Patent is,-
1st. In a furnace for steam and other boilers the construction and use of the
generator vault formed of hollow tubular pieces of fire proof material with gas
passages between, substantially as set forth and shown.
2nd. In a furnace for steam and other boilers the introduction of the external air
and the mixing of the same with the gases by means of the tubular passages and
lots of the vault, substantially as set forth and shown.
3rd. The herein described method of stopping or regulating the supply of air to
the combustion chamber by means of slides or their equivalent, substantially as set
forth and shown.
In witness whereof, I, the said Carl Kesseler, bave hereunto set my hand
and seal, this Twenty fifth day of September, in the year of our Lord
One thousand eight hundred and eighty.
CARL KESSELER. (L.S.)