to Furnaces or Fires for Combustion therein.
Year: 1885

page_text: to Furnaces or Fires for Combustion therein.
I HENRY MARTIN MORRISON of 109 Hope Street in the City of Glasgow Mining
Engineer do hereby declare the nature of this Invention communicated to me from
abroad by John Gaffield Hathaway of 10 Tremont Street Boston State of Massa-
chusetts in the United States of America to be as follows:-
The object of this Invention is to provide means whereby fuel (more particular
small coal or coal waste) may be pulverized and supplied to furnaces or fires with
the proper proportion of air to ensure combustion of the said fuel in the said
furnaces or fires-An apparatus constructed according to this Invention consists of
a chamber into which the fuel to be pulverized passes being fed thereinto from a
hopper or otherwise through an opening in which is capable of being adjusted
a taper helical feeder for feeding in the fuel and regulating the amount so fed in-
Near to the inlet for fuel and preferably at a position just in advance of the afore-
said opening is an air inlet regulated by a damper or valve-The said chamber has
a number of annular partitions extending around its interior so as to divide what
may be called the internal periphery of the chamber into separated compartments
in each of which a series of paddles or beaters revolve they being mounted upon a
shaft extending through the chamber and rotated by any suitable means-That or
those of the said partitions which are nearest the inlet are of less height than the
following one or ones-At the end of the said chamber opposite the inlet is a
separate chamber or space which may form part of the first chamber and between
it and the part in which the paddles or beaters are situated intervenes a sieve or
riddle and in this last named chamber is a fan with blades broad enough at the
side towards the sieve to extend over or nearly over the whole width of the sieve
but lessened in width towards the other side so as to prevent too great a current of
air being generated by the fan-From the fan chamber or space the outlet passes
to the place or furnace where the fuel is to be consumed-When the apparatus is
to be used fuel is fed into the hopper and passes through the regulated inlet for the
fuel and the fan aud paddles or beaters being set in motion the regulated quantity

page_text: of air necessary for the combustion of the fuel is drawn in through the regulated
air opening-The fuel in its passage with the air is first beaten and broken in the
first compartment and then in the next compartment and so on until it reaches the
sieve through which it is drawn in a finely pulverized condition and is ejected
together with the necessary quantity of air through the outlet into the furnace or 5
place where the combustion is to take place.
Dated this 20th day of October 1885
to Furnaces or Fires for Combustion therein.
I HENRY MARTIN MORRISON of 109 Hope Street in the City of Glasgow Mining
Engineer do hereby declare the nature of this Invention which has been com-
municated to me from abroad by John Gaffield Hathaway of 10 Tremont Street
Boston State of Massachusetts in the United States of America, and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :—
The object of this Invention is to provide pulverizing apparatus especially suited
for pulverizing and supplying fuel (more particularly small coal or coal waste) to
furnaces or fires with the proper proportion of air to ensure combustion in the said
furnaces or fires of the said fuel so pulverized. An apparatus constructed according
to this Invention consists of a chamber into which the material to be pulverized
passes being fed thereinto from a hopper or otherwise through an opening in which
is a taper helical feeder capable of being adjusted for feeding in the material and
regulating the amount so fed in. Near to the inlet for material and preferably at
a position just in advance of the aforesaid opening is an air inlet regulated by a
damper or valve. The said chamber has a number of annular partitions extending
around its interior so as to divide what may be called the internal periphery of the
chamber into separated compartments in each of which a series of paddles or beaters
revolve, they being mounted upon a shaft extending through the chamber and
rotated by any suitable means. That or those of the said partitions which are
nearest the inlet are of less height than the following one or ones.
At the end of
the said chamber opposite the inlet is a separate chamber or space which may form
part of the first chamber and between it and the part in which the paddles or
beaters are situated intervenes a sieve or riddle and in this last named chamber is
a fan with blades broad enough at the side towards the sieve to extend over the

page_text: width of the sieve, but lessened in width towards the other side so as to prevent
too great a current of air being generated by the fan. From the fan chamber or
space the outlet passes to the place or furnace where the pulverized material or fuel
is to be utilized or consumed.
And in order that the said Invention may be fully understood, I shall now
proceed more particularly to describe an apparatus for pulverizing fuel constructed
according to this Invention and for that purpose shall refer to the several figures
on the annexed Sheet of Drawings the same letters of reference indicating corre-
sponding parts in all the Figures.
Figure 1 is a side elevation partly in section Figure 2 is an end elevation and
Figure 3 is a plan partly in section of an apparatus constructed according to this
Invention. Figures 4 and 5 shew in detail the air valve and means for operating
it and Figure 6 shews one of the paddles or beaters separately. A is the chamber
within which the fuel is pulverized it being fed thereinto from a hopper B through
the passage C by means of a taper helical feeder D capable of being adjusted longi-
tudially in its bearings by means of the arm d fixed at one end to the outer end
of the helical feeder and having at the other end a screw nut d' engaging with a
screwed rod d³ provided with a hand wheel d by which it may be rotated so as to
cause the nut d³ to travel along the screw in one or the other direction and so
regulate the feed of fuel from the hopper B into the chamber A, by causing a part
of the feeder of lesser or greater diameter to operate in the opening by which the
fuel escapes from the hopper. A shaft E passes longitudinally through the centre
of the chamber A and is mounted in bearings F, rotatory motion being imparted
thereto from any suitable motive power conveyed to a pulley f-At the other end
of the said shaft is a pulley f2 which conveys motion to a pinion g which drives
the wheel do fixed to a collar through which the end of the feeder D passes but
with which it will revolve. In the passage C is arranged the air valve H capable
of opening and closing the opening in the plate h through which the fuel and air
both pass. The valve H consists of 2 plates 2 meeting when closed but which
can be adjusted to open or regulate the air inlet by rotating the right and left
handed screwed rod h³ upon which the parts of the valve h² are carried by means.
of the arms provided with screw nuts -The screwed rod h³ is mounted so that
it can revolve in bosses on the casing but not move longitudinally therein so that
when it is rotated by the hand wheel with which it is provided the nuts h run on
the screws in opposite directions and move the parts h² of the valve to or from each
other. The parts h² pass through slots formed for them in the sides of the passage C.
The chamber A has on its internal periphery inwardly projecting annular flanges or
divisions a' a² a³ increasing in width or height from the inlet to the chamber and
forming compartments A¹ A² A³. In the said chamber A is a separate compartment
or chamber A* there being a sieve or riddle I between it and the other divisions of
the chamber A. Upon the shaft E are fixed series of paddles or beaters one
series for each of the compartments A¹ A' A³ and upon the said shaft a fan J
is also fixed to revolve in the compartment A*. The blades of the fan are shaped.
as shown for the purpose herein before mentioned. K is the outlet for pulverizing
fuel.
It will be understood that I do not limit myself to the number shewn of the com-
partments of the chamber A. When the apparatus is to be used fuel is placed in the
hopper B and is fed by the rotating feeder D through the passage C (regulated by
the said feeder) and the shaft being set in motion the fan and paddles or beaters act
upon the fuel so as to cause it to become pulverized. The regulated quantity of air
necessary for the combustion of the fuel is drawn in with the fuel through the
regulated air opening. The fuel in its passage with the air is first beaten and
broken in the first compartment A¹ and then in the next compartment A2 and so
on until it reaches the sieve I through which it is drawn in a finely pulverized
condition and is ejected together with the necessary quantity of air through the
outlet K into the furnace or place where the combustion is to take place. I have
shewn in Figure 7 a suitable form of furnace for burning fuel pulverized as

page_text: described, I wish it to be understood that do not limit myself to using the fuel
or material pulverized as described for the purpose of being burned or for any
particular purpose or in any particular apparatus,
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 :-
First. A pulverizing apparatus consisting of the arrangement and combination
of parts herein before described and illustrated in the accompanying drawings.
Second. In pulverizing apparatus the combination of an adjustable feeder for
feeding into the apparatus the material to be pulverized and an adjustable air inlet
in combination with an enclosed pulverizing chamber substantially as and for the
purpose herein before described.
Third. In pulverizing apparatus a chamber divided into compartments with
divisions or peripherial rings between of varying widths or heights increasing from
the inlet and with paddles or beaters capable of revolving between the rings
substantially as herein before described.
Fourth. In pulverizing apparatus a chamber divided into compartments in which
beaters or paddles operate and a compartment with a fan rotating therein and
divided from the first named compartments by a screen sieve or riddle substantially
as hereinbefore described.
Fifth. In pulverizing apparatus a chamber divided into compartments with
divisions or peripherial rings between of varying widths or heights increasing from
the inlet and with paddles or beaters capable of revolving therein in combination
with a compartment in which a fan, (with blades shaped as and for the purpose
described) revolves and draws the pulverized material through a screen seive or
riddle and ejects it from the apparatus all substantially as herein before described.
Dated the 9th day of March 1886.