IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PULVERIZING AND SIFTING OR SEPARATING COAL AND OTHER LIKE MATERIALS
Year: 1884

page_text: I AMOUR SOTTIAUX of Strépy Bracquegnies in the Kingdom of Belgium
Engineer do hereby declare the nature of said Invention for "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR PULVERIZING AND SIFTING OR SEPARATING COAL
AND OTHER LIKE MATERIALS" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
My Invention relates to machinery or apparatus for pulverizing and sifting or
separating coal and other like materials and it has for its object providing means
for rapidly and effectually pulverizing the coal or other materials and at the same
time sifting or separating the valuable pulverized matter or dust from the lumps
of schistose or stony matter with which it is associated.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several Figures on the annexed Sheet of Drawings the same letters of reference
indicating corresponding parts in all the Figures.
•
Figure 1 of the accompanying Drawings represents a longitudinal section of
a machine or apparatus constructed according to my Invention. Figure 2 represents
a transverse section of the same and Figure 3 illustrates a portion of the apparatus
detached which will be hereinafter explained.
Figures 4 and 5 represent drawn to a smaller scale respectively a side elevation
and a perspective view of a modification of the rotary sifter hereinafter described.
The apparatus is provided with helical blades or pallets B (illustrated in side and
end elevations in Figure 3) and partaking of rapid rotary motion inside a stationary
perforated cylinder or drum made in two parts marked H and G. Two or more
sets of radial arms A (there being six in each set in the example illustrated) are
fast on a horizontal shaft C and have attached to their extremities by rivets or
otherwise a corresponding number of the blades B the flat sides of which are laid
against the said radial arms A. These arms are rigidly connected to the shaft C
in such a position that they do not coincide or lie in the same planes and tho
blades B attached to their extremities do not lie in the same plane as the shaft or
coincide with the generating line of the cylinder generated by their revolution but
aro set at an angle to such line so as to form portions of a helix coiled upon this
·

page_text: cylinder. In place of the unperforated blades B perforated plates may be employed
but it is preferred to employ unperforated blades on account of the superior current
of air which they create.
The horizontal shaft C works in two bearings E and revolves in the interior of
the perforated or foraninus cylinder or drum C. H. The part G at the feed end
of the stationary drum is preferably made of cast iron grooved in the interior the
perforations being at the bottoms of the grooves. The part H at the delivery end
is preferably made of lighter materials such as perforated sheet metal joined to
the part G. R is a rotary cylindrical sifter fitted over the extremity of the drum H
so as to turn freely thereon being carried by radial arms s on a sleeve q mounted
loosely upon the horizontal shaft C. The cast iron G of the drum is attached by
means of a flange or otherwise to the hinder end of an outer case I preferably of
sheet iron concentric with the stationary drum H and supported by two lateral
beams or supports K. The case I which encloses the stationary drum and the
rotary sifter is open throughout its entire length on the underside and communicates
through this opening with a compartment or receptacle T.
A hopper L at the rear or feed end of the machine communicates with the
interior of the stationary drum G through an opening L₁ and an opening M provided
with a door enables access to be obtained to the interior of the said drum. The
front or delivery end of the machine is provided at its lower part with a discharge
spout N and an inclined sieve P arranged in a shoot O and partaking of a vibratory
or shaking motion may be arranged underneath this spout. The space underneath
the sieve P communicates through a passage S with the receptacle T but the
materials remaining on the upper side of the siove are discharged into a separate
compartment not indicated in the Drawing. In place of the sieve P a rotating
cylindrical sifter or drum may be employed the object of this part of the apparatus
being simply to collect any valuable inaterials that may accompany the fragments
discharged through the spout N. Motion is imparted to the shaft C by means of
a pulley on the front end of the shaft the motion being regulated by a fly
wheel W keyed upon the hinder extremity of the said shaft. In like manner
rotary motion is imparted to the cylindrical sifter R by means of a pulley Q¹ koyed
upon the sleeve f.
The coal or like materials supplied to the feed hopper L falls through the
opening L' into the drum G and is acted upon by the rotating blades or beaters B
which in their rapid movement of rotation strike and break up the pieces of coal
or the like and throw the fragments first against the sides of the cast iron drum G
and subsequently against those of the wire gauze drum H. The current of air
produced by the rotating blades or beaters assists the pulverized portion or dust
in escaping by forcing it through the perforations in the drum G and H into the
space between the sides of the said drums and the caseing I whence the said
pulverized portion or dust falls through the opening in the bottom of the outer
casing I and is deposited in the receptacle T. This prompt removal of the
pulverized matter by the pressure of the current of air enables this apparatus to
act effectually upon large quantities of material in an extremely short space of
time. The effect may be further increased by the employment of an auxiliary
current of air introduced into the drum G. H. The harder and less finely divided
materials aro propelled by the helical blades B into the rotating cylindrical sifter R
which continues the sifting process and in order that the fragments may not bo
projected directly into the space between the front end of the sifter and the end I'
of the casing I carrying with them a certain quantity of valuable matter. the end
of the sifter is partly closed by a helically curved plate V. which prevents the
materials from leaving the sifter R before they have been thoroughly sifted and
the rotary motion of the cylindrical sifter has brought them gradually up to an
opening in the said plate whence the fragments of stony matter are discharged
through the spout N whilst the dust or finer portion falls through the sides of the
sifter R into the receptacle T. The plato V may be provided with more than one.
opening if required in order to allow the fragments of slaty and like matter to

page_text: escape at several points. According to another arrangement the plate or helix V
may be dispensed with altogether the cylindrical sifter R being prolonged so as to
meet the end I of the outer casing I as indicated in Figures 4 and 5 and presenting
one or more lateral openings R¹ for the discharge of the schistose or stony matter.
The dust passing through the sieve P is conducted through the passage S into the
box or compartment provided for its reception whilst the stony matter remaining
on the sieve is delivered into a separate compartment. When the cylindrical
sifter R with the plate V at the end is employed the sieve P may be dispensed
with or the apparatus may be worked without the sifting cylinder R the fragments
being discharged directly from the drum H on to the sieve P.
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. In machinery or apparatus for pulverizing and sifting or separating coal
and other like materials the employment of helical blades partaking of a rapid
rotary motion in the interior of a perforated cylinder or drum substantially as
herein before described and illustrated in the accompanying Drawings.
Second. In machinery or apparatus for pulverizing and sifting or separating coal
and other like materials the employment of the helical revolving blades B in
combination with a perforated cylinder or drum made in two parts one of such
parts being preferably made of cast iron and the other of such parts being preferably
made of wire cloth or gauze and a rotary sifter R having one end partially closed
by a helical plate V the whole arranged to operato substantially as and for the
purpose hereinbefore described and illustrated in the accompanying Drawings.
Third. The general construction and arrangement of the machinery or apparatus
for pulverizing and sifting or separating coal and other like materials substantially
as hereinbefore described and illustrated in the accompanying Drawings.
Dated this 30th day o1 July 1884,
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for tho said Amour Sottiaux.