Process of Electrical Separation Page: 2 of 7
[1], 6 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE.
HENRY M. SUTTON, WALTER L. STEELE, AND EDWIN G. STEELE, OF DALLAS, TEXAS.
PROCESS OF ELECTRICAL SEPARATION.
1,116,951. Specification of Letters Patent. Patented Nov. 10, 1914.
Continuation of application Serial No. 225,852, filed September 24, 1904. This application filed January
11, 1908. Serial No. 410,397.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, county of Dallas, and State of Texas,
have invented certain new and useful Im-
provements in Processes of Electrical Sepa-
ration, of which the following is a specifica-
tion, reference being had therein to the ac-
10 companying drawings. .
This invention relates to a process of
electrostatic separation, and particularly to
the charging of particles electrically to af-
fect their different capacities of receiving
15 such charge.
The invention has for an object to pro-
vide an improved process for separating a
comminuted mass of particles of different
dielectric capacities by exposing them to the
20 action of a convective current or charge of
electricity delivered directly upon them,
whereby some of the particles become polar-
ized and by which a constant difference of
potential is created and maintained between
25 these particles and a separating electrode
causing them to adhere to it by reason of
such polarization, and for separately col-
lecting those particles that are unaffected,
or affected in a different degree by the action
30 of the convectively delivered charge.
Other and further objects and advantages
of the inventionwill be hereinafter set forth
and the novel features defined by the ap-
pended claims.
35- In the drawings :-Figure 1 is a diagram
illustrating one form of apparatus for carry-
ing out this process; Fig. 2 is a similar view
of another form of apparatus for .the same
purpose; and Fig. 3 is a diagram illus-
40 trating the electrical action involved in this.
process.
Like letters refer to like parts in the sev-
eral views of the drawing.
The form of apparatus shown in Fig. 1
45 for carrying out this process is substantially
described and claimed in our pending appli-
cation Serial Number 225,852, filed Septem-
ber 24, 1904, and comprises a continuation
thereof embodying the form thereof where
50 a continuous and pulsating convective
charge or current is used, but the process
can be carried out by other apparatus than
that there disclosed, as shown by the.accom-
panying drawings. .
55 In Fig. 1, the letter A designates a hop-per which is mounted in any desired man-
ner, for instance, upon a frame constructed
in accordance with the requirements of -the
machine. The material to be separated is
fed from the lower portion of the hopper 8o
through the spout A3 to the shaker pan A4
which is adapted to be vibrated by the eccen-
tric strap D2 mounted upon the eccentric D'
on the shaft D. The vibratory motion feeds
the material upon the spreader tray F from 85
which it is delivered to the separating elec-
trode or roller G. This roller may be con-
structed of metal or good conducting ma-
terial, and both it and the spreader tray F
are electrically connected to the ground by 70
means of the line C. so that they are in-
capable of retaining a charge of electricity
which may be imparted to them. This con-
nection may be any desired means, for in-
stance, the wire C' from the tray to the 75
wiper C2 bearing upon the shaft G' of the
roller G. Adjacent to the separating elec-
trode are one or more thin metallic rods H
each provided with a series of metallic
points H' directed' toward the surface of 80
the separating' electrode by which a con-
vective flow of current is maintained from
the rods. Any other desired means may be
used for producing such a current at the
charging point. The charging means is 851
connected to one pole. of the electrostatic
generator C3, or to any other source of
power capable of supplying static electricity,
and the current conducted therefrom either
through the line C" to provide a. continuous . 90.
or constant charge of one polarity, or
through the line C having an interrupter
disposed therein. In order that either of
these lines may be used a switch C" is pro-
vided in the line C1, and a similar switch 95
C8 in the line C9. This line is provided at
opposite sides of the 'interrupter with
pointed terminals Cg adapted to discharge
through the slots L2 in the interrupter when
these slots are brought into alinement with 100
said. terminals. This interrupter may con-
prise the disks L and L' .each similarly
slotted, and the adjustment of these slots
relative to each other will vary their area
and the consequent duration of the charge. 1o5
The material to be separated is fed upon
the roller electrode and in passing the charg-
ing points receives therefrom a charge by
convection from the opposing electrode,
and a dielectric hysteretic impedance or lag 110
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Sutton, Henry M. & Steele, Walter L. Process of Electrical Separation, patent, November 10, 1914; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth859636/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.