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April 8, 1947-
. Filed lay 25, 1942
2 Sheets-6M0‘; 1
I) I
I Fea’errck W /<'o/o'p/7/:>.
Apnl 8, 1947. ~
Filed lay 25, 1942
2 Sheets-Sheet 2
Patented Apr. 8, 1947
Frederick W. Kopplin, Hardin, Mont.
Application May 25, 1942, Serial No. 444,416
3 Claims. (Cl. 210-67)
Figure 9 is a diagrammatic representation of
This invention relates to improvements in
the intermittent washing control shown in Figure
methods and apparatus for the centrifugal wash_
l, but with the switch contacts in a diilerent rela
ing of sugar, chemicals or other materials.
tion in the controlling circuit,
rl‘he primary object of this invention is the
In the drawings, wherein for the purpose of
provision of an improved method and apparatus
illustration is shown the preferred embodiment
for the intermittent washing of materials, such
of the invention, the letter A may generally des
as sugar, during the normal Washing period.
ignate centrifugal machinery for the washing of
In the centrifugal purification of sugar or other
sugar, chemicals and the like, having a'spray
like materials, the cycle of operation generally
B associated therewith which isautomatically
includes a ?rst step of centrifugal elimination of
controlled as to the washing period by mechanism
free syrup from the sugar grains, and then the
centrifugal washing of the resultant sugar grains
in order to remove the coating of syrup that
adheres thereto; this washing being accomplished
and means C. Associated in a cooperative rela
tion with the mechanism C is my improved mech
anlsm D for the intermittent control of the spray
15 during the washing period.
The centrifugal mechanism A may be of the
ing sugar mass. rI‘he present invention is prin
type generally shown in such United States pat
cipally concerned with the washing step. In
ents as 1,627,868; 1,826,675 and 2,128,575, and of
conventional centrifugal machines, a wash con
the type manufactured by-the Western‘ States
trol head is provided for the automatic starting
Machine Company of Hamilton, Ohio. Such
and stopping of the washing ?uid. During the
mechanism generally includes centrifugal appa~
washing period the conventional machine con
ratus A having a rotary centrifugal basket H3;
tinuously sprays the sugar. However, I have
basket suspension shaft H and casing 12, the
found that by intermittently controlling the off
operation of which will be well understood by
and on operation of the spray during this wash
those skilled in the art to which this invention
ing period, a more eflicient dissipation of the 25
- relates.
impurities is accomplished, with an increased
The spray mechanism B is adapted to produce
yield in the pure product; thus doing away with
a plurality of ?ne sprays for washing the mate
the necessity of reprocessing large percentages of
rial in the centrifugal. The washing medium is
the material being treated.
controlled by valve 20 ordinarily controlled by
Other objects and advantages of this invention
the automatic .wash control head mechanism C
will be apparent during the course of the follow
above referred to.
ing detailed description.
The centrifugal equipment is generally of that
In the accompanying drawings, forming a part
type manufactured by the Western States Ma
of this speci?cation, and wherein similar refer
85 chine Company, such as shown in part in prior
by means of a spray directed against the revolv
ence characters designate corresponding parts
throughout the several views,
Figure 1 is a diagrammatic representation of
conventional sugar treating centrifugal machin~
cry and its automatic cycle controls, with my
U. S. Patents 1,627,868; 1,826,675 and 2,128,575.=
with this centrifugal mechanism is associated
automatic control mechanism also manufactured
by the Western'States Machine Company for
controlling the cycles of the different steps auto
improved mechanism associated therewith for the 40 matically, and shown at least in part in such prior
intermittent washing of the sugar during the
washing period.
Figure 2 is a view of a circuit regulating cam
associated with my intermittent control.
U. S. patents as: 1,719,132; 1,758,901 and 1,861,978.
Conventional automatic wash head equipment
includes a shaft 30 driven by suitable motor and
gear reducing mechanism (not shown). A longi
Figure 3 is a side elevation, partly in section, 45 tudinally movable rod or memberjl is asso
or my improved mechanism for variably control“
ciated therewith for normally controlling the op»
ling the intermittent washing of sugar, chemicals,
eratlon of the spray valve. In the case of the
etc, in a centrifugal.
present invention, however, this part 3| oper
Figures 4, 5, 6 and 7 are details of the cam
ates a switch 32 which controls a circuit thru
mechanism for varying the washing period be 50 a solenoid 33. The latter is associated with the
tween the intermittent o? periods, as controlled
valve 20 and opens the valve upon energization
by the improved mechanism'of Figure 3.
Figure 8 is a fragmentary view, partly in
tion, showing the manner in which the ca:
rangement is manipulated.
of this circuit.
The mechanism for intermittent control of the
materials in the centrifugal during the washing
the disc cam 9| towards the disc cam 90. The
c in means 5i.
opposite end of the spring l 16 engages the washer
or disc 120 detachably connected at 12! upon the
'iveii by
of a motor
outer end of the shaft 52, as shown in Figures 3
‘notion mechanism 54 of com
and 8 of the drawings.
rheostat 525 may be associated
It is readily obvious that the throw arc of the
with the motor for varying the speed thereof.
cam arrangement 5| can be varied by pulling
The can mechanism Si is of type which can
the cam disc 91 away from the cam disc 80 and
be manualiy adjusted so as to vary the o?
rotating it to the position desired. It is noted
the switch mechanism 50.
10 from Figures 1, 2 and 4 of the drawings that the
The switch mechanism 50 preferably includes
throw surfaceof the cam disc 90 is graduated
. c pairs of contacts for the same circuit; only
and of course the shoulder I25 at the end of
the throw of the cam disc 9i may be associated
one pair of contacts being disposed in the circuit
at any one time,
purposes to be subsequently
mentioned. {)ne pair of these contacts 553 and
with these delineations to determine the throw
arc of the cam which is effective for closing the
switch 50.
With the contacts 55“ and 56 disposed in the
Thus it can be
12 includes two pairs of
_ circuit 80, a period of switch closing of the circuit
through this switch 50 cannot be made shorter
the contacts at any one time,
desired operation of the device.
he disconnected therefrom and
20 than the period of broken contact or opening of
the circuit. That is true because throws of both
of the cam discs 90 and Si extend through sub
stantially 180°. However, the closing of the cir
cuit 80 through this switch 50 can be made shorter
than the period of broken contact by transpos
ing the ends of the wires of the circuit 80 out of
connection with the contacts 55a and 56 and into
connection with the contacts 58 and 59. Under
er and pivoted at
" -h mechanism 50
these circumstances, the switch 50 will close the
circuit 80 when the roller 1 I0 is in the depression
of the cam mechanism 5! ; that is, oil of the throw
upon the post»
i or the
or automatic wash control head C commences
the 3
Referring to the operation, the master control
:2‘? will he
to function upon starting the centrifugal wash
ihg operation and during the entire period of the
washing step of treatment of the sugar or other
materials being washed, this wash head will hold
the member 3i down and close the circuit 80
is disposed 40 through the switch 32. Of course the circuit 80
when closed holds the valve 20 open through op
it controls.
- eration of the solenoid 33. Hcwever, during this
32 holds
wash period, the washing spray is intermittently
it irom any an“
. hich
controlled as to its effective “oil? and on," by
means of the intermittent circuit maker and
breaker mechanism D which operates as above
described to intermittently make and break the
circuit 80 during the wash period as automati
cally regulated by the automatic wash head. C.
1 “For regulatimT the 0.132 and on
. the switch 55 comprises a pair of cam
The cam disc
e shaft P“
is keyed at
'itli a throw
ce less than
Of course any time the switch 50 closes the cir
cuit 80, the solenoid 33 is operated to open the
valve 20.
The time period of washing as controlled by
the means C is determined, as is also the time of
each of the washing periods controlled by the
intermittent operating device D, by the nature
and degree of impurity of the material being
treated. It will be obvious that those skilled in
the art can readily determine these time factors.
As shown in the drawings, any number of the
of less
centrifugals in a battery or set-up of centrifugal
machines may be employed.
Changes in details may be made to the form of
invention herein shown and described, without
departing from the spirit of the invention or the
scope of the following claims.
I claim:
1. The improvement in the method of centrif
ugal purification of sugar and like solids wherein
there is a purging treatment followed by a cen
trifugal washing step of predetermined length,
which consists in the intermittent washing of
the sugar or like solids being centrifugally treated
for the entire washing step.
2. In centrifugal. apparatus for treating sugar
75 and other materials for the removal or certain
t we?"
the circuit in‘ which it is placed, a second switch
therefrom, theseparable
of a centrifuge,
' and
valve for admitting a washing medium to the
infeaid circuit, and a second control means for
switch including means for inter- ‘
lmittently opening and‘ closing said second switch. ' '
centrifuge, a solenoid for operating said va1ve,.a ,
switch in circuit with the solenoid, an automatic‘
ran-omen w. KoPPnm.‘
control mechanism for controlling the opening '
and closing of said switch tor va predetermined
, period of time, and control means comprising a
second switch in series in the circuit with said
first switch, and means for intermittently opens- 10
ing and closing said last mentioned switch during‘
the aforesaid predetermined time.
3. In apparatus for the centrifugal puri?cation
lollowinzreterences areot record in‘the‘
' .
s'rsrss PATENTS " 9
13.23.8810 Roberts _______ --_.......‘-Dec.3,1,940 -?
of sugar or other centriiugally separable mate- > a; v1,351,240, ‘min _._;,...I..._...' .29,1932v I
rials, the combination 0! a centrifuge wherein is 2,270,199 . m _'.......--_ ', 1942
the materials are to be washed; means for supply
> ing washing ?uid to the materials in the centri» _
time including a valve, an'electric circuit, control
means in ‘said circuit for (.perating said valve‘v
including a switch in the circuitand- a control
Steps ............ -_ Feb.-_20,1923
Steps -'._-_'_______ -_' July 25,1922 , A
device for opening‘ and closing said switch and ‘v
Hartman ........ _-. Dec.19,1922
Hartman ...... ..'_-_.. May 22, 1923
. DeMarchville _____ __ Feb. 20, 1900
31,689,927 .1 I Carlson __;_-__’_____- May 15, 1929
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