Improvements in or relating to Stoves, Steam Boiler, and other Furnaces.
Year: 1889

page_text: Date of Application, 20th Feb., 1889
Specification Accepted, 23rd Mar, 1889
COMPLETE SPECIFICATION.
Improvements in or relating to Stoves, Steam Boiler, and
other Furnaces.
I, JOHANN BIELENBERG of Chemnitz, in the Kingdom of Saxony, Gentleman, 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 which relates to domestic and other stoves and to furnaces for
heating steam boilers and for other purposes has for its object to so arrange the part
of the stove or furnace through which the fuel is fed that all the air for supporting
combustion is introduced through the same shoot or hopper as the fuel and passing
through the fuel to the point of combustion is thereby heated whereby the formation
of slag or clinker in the stove or furnace is lessened or prevented, greater heat is
developed, the production of smoke is also prevented and the firing requires less atten-
tion. The improved arrangement has also the advantages, that in opening the shoot or
hopper to fill it with fuel no smoke arises, that it is easily adapted to all classes of
stoves whether for heating or cooking purposes, as well as to furnaces generally.
On the accompanying drawings figures 1 to 4 inclusive illustrate the Invention as
adapted to an ordinary room heating stove, figure 1 being a vertical section figure 2
a front elevation, figure 3 a horizontal section on the line A, B, and figure 4 a like
section on the line &D figure 1 of the stove.
Figure 5 shows in vertical section and figure 6 in front elevation the adaptation of
the invention to the furnace of a steam boiler and figure 7 shows in vertical section
the adaptation to a furnace which may be used for heating purposes generally.
Referring to figures 1, 2, 3 and 4 the feed shoot or hopper a is provided at its
upper end with a hinged cover plate 6 for regulating the draught the plate having a
pawl d engaging with a rack e and by the position of which in the rack the supply of
air is increased or diminished.
The feed shoot or hopper a has a fire grate or bars f at its lower end or instead
of a grate it may have a solid plate for the fuel to rest upon but a grate is pre-
ferred as it allows the spent fuel reduced to ashes, to fall through into the ash

page_text: pit. The grating f turns on a pin g and its front end rests on a sliding bolt h
which can be drawn back to allow the grate to swing downwards when the feed
shoot or hopper requires clearing. The inner wall of the feed shoot forms at
its lower end an arch which serves as a fire bridge k for the actively burning fuel
the combustion taking place at that point. The gases of combustion rise in the
part and heat the walls of the stove. At its lower end and above the bolt h
the shoot a has a hermetically closing door m, through which refuse can also be
removed and the ash pit underneath the grate f has also a hermetically closing
door n so that through neither of the doors m or n can air enter the stove. o 15
the warming plate and p the pipe leading to the chimney.
Referring to figures 5 and 6 the walls of the feed shoot or hopper a¹ are placed
somewhat obliquely.
The grating which rests on a special plate f² turns on a pin gl and can on
withdrawing the sliding bolt be tilted downwards. The doors m and n have the
same arrangements and serve the same purposes as indicated in the stove
figures 1 to 4 and the front wall a² of the feed shoot or hopper is lined at a³
with refractory material to increase its durability. The cover of the shoot is
furnished with a damper c² to regulate the draught and in feeding fuel it is raised
by a chain having a counter weight or by other means. As the air entering in the
direction of the arrow I is sucked in by the gases generated in combustion and there
is always a surplus of draught to the chimney, there can be no back smoke.
The arrangement figure 7 in which the shoot a is composed of an iron casing can be
easily adapted to furnaces generally and for furnace purposes the invention whilst
possessing the advantages of other feeding arrangements has also the peculiar
advantages of preventing the formation of slag in the furnace and of more con-
veniently regulating the combustion.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In a stove or furnace the improved feeding and air supplying arrangements sub-
stantially as hereinbefore described with reference to the three sheets of drawings
hereunto annexed.