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Патент USA US2407851

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Sept. 17, 1946.‘ '
J. ROTH
2,407,849
APPARATUS FOR FIRING PRESSED FUEL
Filed April 6, 1944
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’ INVENTOR
Josm? F0 TH
ATTORNE
Patented Sept. 17, 1946
2,407,849
UNITED STATESPATENT OFFICE
2,407,849
, APPARATUS FOR FIRING PRESSED FUEL,
Joseph Roth, Bronx, N. Y.
Application April 6, 1944, Serial No. 529,862
,
3 Claims.
1
This invention relates to apparatus which may
be used as a heater, or for other purposes. More
particularly, the invention relates to apparatus
of this kind wherein fuel in the form of particles,
small pieces or grains may be tightly pressed or
packed in the ?re box of a heater in such manner
as to form within the packed mass, at least one
?re column with means for radiating heat aris
(01. 126——225)
2
part comprises a cylindrical body It, in the lower
end portion of which‘ is an inner bottom wall II,
which forms with the cylinder III the ?re box I2
of the apparatus. The wall II has a central
opening I3 which opens into'a draft chamber
I4 at the bottom of the cylinder I0, the latter
being closed by an outer bottom wall I5. Access
to the chamber I 4 is provided through a front
ing from the heater, and for discharging prod
opening I6, controlled by a hinged door I‘I, held
ucts of combustion, particularly in constructing 10 in place by a suitable catch I8. On the door is
what might be termed portable heaters, stoves
a more or less conventional sliding draft control
or similar apparatus. The novel features of the
invention will be best understood from the fol
plate I9, such as commonly employed on the
doors of heaters or furnaces, opening into either
the ?re box or the lower draft chamber of the
lowing description when taken together with the
accompanying drawing in which certain embodi 15 apparatus.
ments of the invention are disclosed, and in
It is also preferred that the apparatus be sup
which the separate parts are designated by suit
able reference characters in each of the views;
and in which:
Fig. 1 is a front View of a heater made accord
ing to my invention, with part of the construction
ported on a plurality of legs 20, so as to maintain
the wall I5 above a ?oor surface, particularly
when this surface may be composed of wood. so
20 as to prevent injury to the surface, and further
to cool the burnt particles which may drop into
broken away and in section.
the chamber I4.
Fig. 2 is a section on the line 2—2 of Fig. 1,
Secured to the top of the cylinder It! is a ring
showing a cover or lid removed, and indicating
like plate 2I, which extends beyond the walls
the method of packing fuel in the heater.
25 of the cylinder IIi. Secured to the outer end of
Fig. 3 is a plan View of the structure as seen
the ring 2| is an upstanding annular sleeve 22,
in Fig. l, with parts of the construction broken
to which is secured a top ring 23. The rings 2|
away and in section; and
and 23 together with the sleeve 22, form at the
Fig. 4 is an enlarged sectional detail view,
top of the ?re box I2 a large heat radiating
illustrating the method of interlocking the wall 30 chamber 24, which may have a number of cir
parts of the top radiating portion of the heater.
cumferential discharge openings. One of these
For purposes, of illustrating one adaptation and
openings is indicated at 25, in Fig. 3 of the draw
use of my invention, I have shown a simple meth
ing, and the opening is normally closed by a
od of constructing the same to-adapt. it for use
spring pressed cover 25 (see Fig. 1). However,
primarily as what might be termed a portable 35 as indicated at 21, a heat radiating pipe may be
space heater. That is to say, a heater which‘may
coupled with the sleeve 22 upon removal of the
be located in any room or compartment, for the
cover 26, and this pipe may include a conven
tional damper 28.
purpose of heating the same. A number of such
units may be employed to heat a large room, each
The aperture of the ring 2! is substantially
heater having an independent flue discharge, 40 common in diameter to the diameter of the
preferably opening to atmosphere.
?re box l2, whereas the ring 23 has a somewhat
Heaters of the type and kind under considera
smaller ?anged center aperture 29 which is nor
tion may be used practically in heating camps
mally closed by a cover 30. This cover has de
and similar lodgings, where other types of heat
pending from its inner surface a shield or ba?‘le
ing installations would be expensive and di?icult 45 portion 3| which extends through the chamber
to install. Further, heaters of this kind may be
24 and into the ?re box, as indicated in dotted
used to heat garages, small homes, chicken coops
lines in Fig. 1. The baf?e portion 3| is partially
and similar’ types of buildings. The principles of
shown in cross section in Fig. 3 of the drawing.
the heating apparatus herein disclosed may also
be utilised in the construction of stoves for use 50 The purpose of this ba?ie is to direct the major
portion of the products of combustion rising in
in preparing meals, in which cases, the top struc
the ?re box away from direct transmission
ture of the apparatus will be made to adapt the
through a flue pipe 32, which extends upwardly
same for such uses.
In the simpli?ed showing, the heating appa
from the ring 23 at the rear portion of the heater,
ratus is made of sheet metal parts. The main 55 and to allow for a better distribution of the prod
2,407,849
3
4
nets of combustion through the heat radiating
chamber 24.
The particular type of baffle employed may be
ting the sawdust with a fuel oil or similar agent
which will have either or both of the properties
named.
varied in different uses of the apparatus, for ex
sawdust will work independent of any binder or
ample, the present construction deals primarily
with what might be called an apparatus having
a single ?re chamber. However, in other in
stimulating agent.
parts 2|, 22 and 23 together are not shown in
Fig. 2 of the drawing because of the size of the
present showing and constructing the heater
apparatus accordingly.
I have found, however, that ordinary
In some cases, two or more of the ?re pas- V
sages may be formed in the compact or pressed
mass of fuel, by simply packing the same around
stances, two or more of these chambers may be
a plurality of forming rods, providing means forv
erected, as will be apparent. ‘
/
The details of construction in coupling the wall 10 supporting the rods in the manner taught in the
parts. However, in Fig. 4, the coupling between
two of these walls is illustrated in detail. In this
It will also be understood that any type or kind
of fuel may be employed. For example, this
apparatus would lend itself to the burning of
?gure, part of the walls 22 and 23 are shown.
The wall 23 has‘ one downwardly extending
?ange 33, whereas the wall 22 includes a down
type or kind of waste materials. For example,
wardly extending ?ange 34 arranged inwardly
the apparatus may be used as a means for burn,
very ?ne or more or less pulverized fuels or any
of the ?ange 33, an upwardly extending ?ange
‘ ing leaves which are pressed into a cylindrical
35 arranged outwardly of the ?ange 33, and a 20 unit substantially in the manner described. In
top horizontal ?ange 36 arrangedupon the top
this way, dried leaves may be put to a de?nite
use, rather than being destroyed by outdoor burn
periphery of the wall 23. This forms a strong,
durable and well reinforced coupling between the
wall parts. However, in some instances, the wall
parts may simply be welded together.
ing, as is the conventional practice.
'
In apparatus of the kind illustrated in the
25 accompanying drawing, it will be apparent that
In the use of the apparatus, the cover 39 to
gether with its baffle 31 is removed from the top
of the heater, and an elongated tapered forming
as the ?re chamber expands in diameter, the hot
coals which may drop from the walls of the ?re
chamber will drop onto the wall II, and aid in
rod. 3'1‘ is passed down through the ?re box l2
stimulating
the
?ame
and into the aperture lit, in which it has a snug 30 through the fire box 82.
?t. With the forming rod '31 in this position, I
now pack small particles or grained fuel 38 around
the rod 3'! in the ?re box l2 to a height prefer
as it .rises upwardly
These collected coals
will aid in spreading the flame, and will tend to
keep the ?ame at all times on the inner diameter
of the pressed or packed fuel mass. The damper
ably below and in spaced relation to the chamber
IS on the door I‘! may be adjusted, from time to
24. After ?rmly packing the fuel 38 in position, 35 time to regulate the draft through the heater,
I then withdraw the forming rod 31 through the
and this may be further controlled and regulated
opening 29, which will leave in the packed fuel
by providing a damper control in the flue 32, as is
commonly known in this art.
’
38 a vertical ?re passage or chamber 39, then the
cover 39 together with its baffle 3! is placed in
The cylinder or casing It) has on opposed walls,
position with the ba?ie arranged toward the back 40 handles ill), by means of which the unit may be
of the heater in the manner illustrated in Figs.
conveniently carried. From this standpoint, it
2 and 3 of the drawing. The door fl’ is now
will be understood that in emergency cases, the
opened, and a few pieces of paper or a few bits of
?ue 32 may be directed out through the window
vquickly burning material of any type or kind are
of a room or compartment, suitable means being
placed in the chamber it directly beneath the
provided to close the remainder of an openwin
elongated ?re passage 39. These are then ignited,
dow and suitable insulation being provided in
and the ?ame will travel upwardly through the
such instances.
?re passage 39 and ignite the compressed fuel
My improved apparatus lends itself to utiliz
38 exposed to the bore of said passage, and the
ing such waste material as sawdust, and to put
products of combustion will rise and ?ow into the
it to a practical use in the heating of camps and
radiating chamber 24 and ?nally out through the
other dwellings. This is particularly desirable at
?ue 32. As the packed or pressed fuel 38 burns,
Army camps, where a fuel of this type and kind
the ?re passage 39 becomes larger, and what
is plentiful, and where economical heating appa
ever ash may be created will drop down through
ratus is not now available and new apparatus is
the opening I3 into the pit or chamber [4, from
available to handle fuel of certain types and
which it may be removed from time to time. The
kinds.
heater will continue to operate until all, or sub
Having fully described my invention, what I
stantially all of the fuel has been consumed in the
claim as new and desire to secure by Letters Pat
?re box l2.
ent is:
, I have found from practical experience that 60
1. A heater apparatus of the class described,
such material as sawdust may be very practi
comprising a cylindrical ?re box casing, partition
cally used in heaters of the class under consider
means forming a draft chamber at the lower end
ation, and that a heater of relatively small ?re
box diameter, namely less than two feet, packed
of the ?re box, a heat radiating chamber at the
to comfortably heat a fairly large room or com
outwardly of said casing, a ?ue discharge from
substantially in the manner illustrated, will burn 65 upper end of the ?re box, said chamber compris
ing top and side walls and a bottom wall arranged
for many hours, and will radiate su?icient heat
partment. By providing the passages, as at 25,
heat radiating pipes or ducts may be directed to
adjacent rooms or compartments to heat the
said chamber, said discharge extending upwardly
from one side of the top wall of said casing, said
partition means having an opening placing the
70. draft‘ chamber in communication with the lower‘
same.
end of said ?re box, the ?re box being adapted
~ In some instances, fuel such as sawdust may be
to receive a packed mass of fuel with a vertical
processed to establish adhesion between the par
ticles, and also to increase the burning proper
ties of the fuel, for example, by spraying or wet-‘
passage in said mass in registering’ alinement with
said ?rst named passage't'o form a ?re cham
- ber extending vertically through said packed
2,407,849
5
mass opening into the upper end of the fire
box and into, said radiating chamber, means con
trolling admission of air to said draft chamber,
the top wall of said radiating chamber having a
large opening arranged above the ?re box, a cover
controlling said opening for admission of fuel to
the ?re box of the apparatus, and a ba?le integral
with and supported by said cover and extending
through said radiating chamber into the upper
portion of said casing and to a point below the
bottom wall of said radiating chamber.
2. A heating apparatus of the class described,
comprising an elongated cylinder, a bottom wall
on said cylinder, a supplemental bottom wall
forming in the lower portion of the cylinder a
draft chamber, means controlling air admission
to said chamber, the supplemental bottom wall
forming in conjunction with the cylinder above
said wall a ?re box in which fuel is adapted to be
received, the supplemental wall having a passage
opening into said ?re box and into the draft
chamber, the ?re box being adapted to receive
packed fuel with a vertical passage formed in the
fuel and registering with said ?rst named pas
sage, an enlarged heat radiating chamber at the
through said radiating chamber and into said
cylinder to a point below the bottom wall of said
radiating chamber.
.
3. A heating apparatus of the class described,
comprising an elongated cylinder, a bottom wall
on said cylinder, a supplemental bottom wall
‘ forming in the lower portion of the cylinder a
draft chamber, means controlling air admission
to said chamber, the supplemental bottom wall
10 forming in conjunction with the cylinder above
said wall a ?re box in which fuel is adapted to be
received, the supplemental wall having a passage
opening into said ?re box and into the draft
chamber the ?re box being adapted to receive
15 packed fuel with a vertical passage formed in the
fuel and registering with said ?rst named pas
sage, an enlarged heat radiating chamber at the
top of said cylinder, said chamber comprising an
annular bottom wall extending from the top of
20 the cylinder outwardly, a vertical side Wall at the
periphery of said bottom wall, a top wall of an
outside diameter corresponding to the diameter
of said bottom wall, the top wall having a large
central opening through which fuel is adapted to
25 be inserted into the ?re box, a flue discharge ex
tending upwardly from the top wall of said ra
diating chamber at one side thereof, a cover for
an annular bottom wall extending from the top
closing the center opening of the top wall of said
of the cylinder outwardly, a vertical side wall at
radiating chamber, said cover having a semi
the periphery of said bottom Wall, a top wall of
an outside diameter corresponding to the diame 30 conical baf?e adapted to extend through said ra
diating chamber and into said cylinder to a point
ter of said bottom Wall, the top wall having a
large central opening through which fuel is
below the bottom wall of said radiating chamber,
and the side wall of said chamber at a point
adapted to be inserted into the ?re box, a ?ue
spaced with respect to the flue discharge of said
discharge extending upwardly from the top Wall
chamber having a passage through which heat ,
of said radiating chamber at one side thereof,
may be conveyed beyond the limits of said cham
a cover for closing the center opening of the top
ber.
wall of said radiating chamber, and said cover
JOSEPH ROTH.
having a semi-conical baffle adapted to extend
top of said cylinder, said chamber comprising
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