Process of and Apparatus for Sizing or Classifying Comminuted Materials. Page: 8 of 16
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UNITED STATESPATENT OFFICE.
HENRY M. SUTTON, WALTER L. STEELE, AND EDWIN G. STEELE, OF DALLAS,
TEXAS.
PROCESS OF AND APPARATUS FOR SIZING OR CLASSIFYING COMMINUTED MATERIALS.Specification of Letters Patent.
Patented June .1,1915.
Application filed July 21, 1913. Serial No. 780,360.
To all whom it may concern:
-Be it known that we, HENRY M. SUTToN,
WALTER L. STEELE, and EDWIN G, STEELE,
citizens of the United States, residing at
5 Dallas, in the county.of Dallas and State of
Texas, have invented certain new and useful
Improvements in Processes of and Appa-
ratus.for Sizing or Classifying Comminuted
Materials, of which the following is a
10 specification, reference being had therein to
the accompanying drawing.
This invention relates to certain new and
useful improvements in process of and appa-
ratus for sizing or classifying. comminuted
15 material. according -to the size of the parti-
cles of the material, i-egardless of any differ-
ence in specific gravity of the particles con-
stituting the comminuted material, whereby
the particles can be classified according to
20 size -and discharged from the apparatus in
different receptacles; the particles in each of
the receptacles being substantially all of the
same size regardless of their difference in
specific gravity.
25 Another object of the invention is to pro-
vide a continuously moving roughened siz-
ing surface or deck, upon which the com-
minuted * material is delivered and from
which the particles of the comminuted mate-
Q) ial are discharged according to their size;
means being provided for agitating the siz-
ing surface so as to cause the particles there-
on to be agitated, whereby the particles will
gravitate at different rates of speed accord-
35 ing to their size transversely of the sizing
surface front which they can be discharged
into receptacles.
Another and further object of the inven-
tion is to provide an apparatus in which the
40 comminuted material will be prevented from
Iccumulating at the point of delivery upon
the sizing surface, thereby overcoming the
difficulties now existing with separators of
this character. as the agitation of pulveru-
lent material upon a table which is not con-
tin ial ' in motion, causes the finer particles
thereof to become more thoroughly packed
<tnid prevEnts the more granular particles
frou. movie ng in order to properly size the
*5 material. .
" A ith'rsnd fuii rter object of the inveri-
tion is to provide a process and apparatus-by means of which, a greater amount of
material can be sized in a given time than
with other classes of sizing machines, and 55
the cost of sizing per ton, is greatly reduced.
Another and further object of the inven-
tion is to provide a process and apparatus
by means of which, comminuted material
having particles differing in size to a great 60
extent, can be classified. - That is, large par-
ticles as well as pulverulent material from
the crusher can be delivered upon the con-
tinuously moving sizing surface and when
discharged therefrom into the respective re- 65
ceptacles, the particles in one receptacle will
be substantially of the same size; that is,
particles of material of low specific gravity
of a certain size will be deposited with par-
ticles of high specific gravity of the same 70
size, and so on throughout the classification.
The pulverulent material adhering to the
continuously moving surface is discharged
at the end of the same into a separate recep- -
tacle which can be separated if the same con- 75
tains minerals of value.
A further object of the invention is to
provide a process -and apparatus for sizing
or classifying material in which screens of
all kinds are dispensed with, thereby over- 80
coming the difficulties now existing with
screen sizers and at the same time, a class-
ifying surface is produced which is not sub-
jected to the sliding action of the material
being sized, thereby reducing the frictional 85
wear on the surface, which is the main diffi-
culty with a screen classifier used for screen-
ing pulverulent material, as the life of the
screen when operating upon certain classes
of material is very short and as the cost of 90
the screen has to be considered in connection
with the cost of classifying ore, it will be
seen that by providing a classifying surface
which is not subjected to wear to any great
extent, the cost of classifying comminuted 95
material is greatly reduced.
We are aware that we are not the first in
the' art to provide a sizer or classifier in
which the particles are classified according
to their size by the moveL:ant of the particle 100
upon a classifying .irface but in appara-
tuses of this character previously -construct-
ed, a classifying surface was given a pro-
jecting pulsation iii irder to cause the par-1,141,852.
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Sutton, Henry M. Process of and Apparatus for Sizing or Classifying Comminuted Materials., patent, June 1, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858872/m1/8/?q=%22~1%22~1: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.