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Патент USA US2119006

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May 31, 1938.
F. D. CHAPMAN
HYDRAULIC CORN SILKER
Filed Sept. 25, 14936
_
2,119,006
'
2 Sheets-Sheet 1
INVENTOR.
ATTORNEY§ -
May 31, 1938.
F. D‘ CHAPMAN
HYDRAULIC CORN SILKER
Filed Sept. 23, 1956
/9
x‘
“mm.
BY 6%
I
2,119,006
'
2 Sheets-Sheet 2
INVENTOR.
W
Patented May 31, 1938
2,119,006
UNITED STATES ‘
PATENT OFFlCE
2,119,006
HYDRAULIC CORN SILKER
Frank D‘. Chapman, Berlin, Wis.
Application September 23, 1936, Serial No. 102,106
4 Claims.
(Cl. 209-156)
My present invention relates generally to im
provements in the art of hydraulically separat
ing materials having dilferent speci?c gravity,
and relates more speci?cally to an improved sys
‘5 tem for removing silk and fragments of husk from
whole grain corn after the latter has been re
leased from the cobs.
Generally de?ned, an object of my present in
vention is to provide an improved corn silking
10 system which is simple in construction, yet highly
efficient and automatic in operation.
In my prior application Serial No. 34,740, ?led
August 5, 1935, I have shown and described an
improved hydraulic transporting system for leg
'15
reference characters designate the same or simi
lar parts in the various views.
Fig. l is a somewhat diagrammatic top view _.
of one of my improved corn silking systems, with
the supply chute omitted;
Fig. 2 is a similar side elevation of the assem
blage shown in Fig. 1;
umes such as peas or the like, wherein the con
Fig. 3 is an enlarged vertical section through ,_
the liquid supply and silk removing portion of ‘
veying liquid is delivered over an annular dam
to the inlet side of a transporting pump, and the
solids are deposited within the dam and are
mixed with the liquid as it flows toward the pump
lar line 3-3 of Fig. 1; .
20 inlet, the mixture being subsequently forced
through a conducting pipe or conduit. The basin
for supplying the liquid to the annular dam, is
quite extensive and has large surface area, and
it has been found in actual omration that when
25 the pump is operating at a desirable speed for
conveying purposes, the surface liquid in the
basin travels quite rapidly and has su?icient sur
face tension to sustain material such as corn silk
and fragments of husk having relatively light
30 weight, for a considerable length of time.
It is therefore a more speci?c object of the
present invention, to provide an improved system
involving some of the principles of my prior hy
draulic conveyor, for effectively removing silk
35 and fragments or pieces of husk, from seed such
as corn kernels.
Another speci?c object of my present invention
is to provide a new and useful hydraulic corn~
silker which eliminates necessity of providing
40 movable tines and other complicated and un
sanitary mechanisms such as are customarily
employed in silking apparatus.
A further speci?c ‘object of my present inven
tion is to provide a combined corn silking, wash
ing and conveying system which simultaneously
performs all three of these functions in a most
effective and sanitary manner.
Still another speci?c object of my present .in
vention is the provision of a corn silking system
which is thoroughly reliable and automatic in
operation, and which is operable with minimum
power and may be readily converted to other uses.
These and other speci?c objects and advan
oi Ul
A clear conception of an embodiment of the
several improved features constituting the pres
ent invention, and of the mode of operating the
improved corn silking system, may be had by
referring to the drawings accompanying and
forming a part of this speci?cation wherein like
tages will be apparent from the following detailed
description.
the improved apparatus, taken along the irregu
Fig. 4 is a similarly enlarged transverse verti
cal section through the same portion of the as- _
semblage, taken along the irregular line 4-—4 of '
Fig. 1;
Fig. 5 is a likewise enlarged side elevation look
ing toward the silk removing portion of the ap
paratus; and
Fig. 6 is a further enlarged somewhat diagram- 1' 5
matic section similar to that of Fig. 4, showing
the normal action of the improved separating
device.
While the invention has been shown and de
scribedherein as being applied speci?cally in a
system for effecting the removal of silk and husk
particles from whole grain corn, it is not the in
tent to thereby unnecessarily restrict the scope.
Referring to the drawings, the improved hy
draulic separating and conveying system shown
therein by way of illustration, comprises in gen
eral a rotary trash pump 8 having an axially di
rected horizontal inlet in open communication
with the lower constricted end of a vertical fun
nel 9 and also having an upwardly directed pe
ripheral discharge communicating directly with
an elongated conveying conduit 10; a rather ex
tensive and relatively shallow liquid supply basin
H for delivering liquid such as water into the
upper open end of the funnel 9 over an annular 45
ridge or dam l2; a mixed material supply chute
I3 for depositing a mixture of corn silk and ker
nels by gravity into the basin ll above the fun
nel 9; an adjustable silk and husk fragment re
moving weir l4 associated with a wall of the basin 50
I I closely adjacent to the funnel 9; a rotary rela
tively coarse screen l5 for receiving the mixture
of conveying liquid and corn from the discharge
end of the transporting conduit l0‘ and for sub
jecting the corn to a washing or rinsing action 55
2
2,119,006
prior to removal thereof from the conveying liq
uid; a return pipe l6 for conducting the rinsing
and conveying liquid toward the basin H ; and
to control the normal ?ow over the silk separat
a rotary relatively ?ne separating screen ll for
draulic conveyor and corn silk remover, the sys
?nally removing silk and other debris from the
liquid prior to ?nal return thereof to the basin I l.
tem is being supplied with fresh liquid, when nec
essary, through the supply pipe 20, and with
regulated quantities of fresh liquid through the
spray pipe 23, and the pump 8 is operating to
continuously remove liquid from the basin H
The rotor of the pump 8 may be driven from
any suitable source of power such as a motor
[8 which may also be drivingly connected to the
ing weir 14.
During normal operation of the improved hy
10 screens I5, I? in a well known manner, and this ' over the dam l2 and through the funnel 9, and 10
pump is preferably of the open impeller type
having large, smooth and unobstructed passages
which will not damage the corn and will not clog
readily. The axial pump inlet is also free from
15 obstructions, and the cone or funnel 9 may either
be free from obstructions as shown, or may be
provided with whirl preventing radial vanes along
The level of the
liquid within the enlarged supply basin I l is pref
20 erably maintained well above the crest of the
r the inclined surface thereof.
dam l2 as shown in Figs. 3, 4 and 6 by means of
the vertically adjustable weir l4, and the basin
ll may be provided with a side chute [9 for re
ceiving the spillage liquid and separated silk de
25 livered over the weir I4. The tank or basin H
is also provided with a ?oat controlled fresh wa
ter supply pipe 20 preferably located some dis
tance away from the funnel 9, and has a drain
pipe 2i at the lowest portion thereof for effect
30 ing complete removal of the liquid when the sys
tem is inactive. During such drainage, the nor
mally upright external end of the pipe 2| may
be swung downwardly beyond horizontal posi
tion about the common horizontal axis of the
35 two lower elbows, thus permitting complete drain
age in an obvious manner.
The pump discharge and the conveying con
duit 10 are also internally smooth and free from
obstructions, and the upper coarse screen I5 with
40 in which the transporting pipe terminates, is ro~
tatably supported in slightly inclined condition,
by means of roller supports 22.
The screen I5
is revolvable in any suitable manner to cause
the admitted solids to roll across and along the
45 bottom thereof, and a stationary spray pipe 23
extends along the interior of this screen above
the rolling material and serves to constantly pre
cipitate fresh rinsing liquid over the solids. The
lower end of the inclined screen 15 is open and
50 communicates with a chute 24 for receiving the
' washed solids or corn, and the conveying and
rinsing liquid which passes through the screen
drops into a receptacle 25 disposed directly be
neath the screen IS.
55
The upper end of the liquid return pipe l6 com
municates directly with the lower end of the re
ceptacle 25, and the opposite lower end thereof
communicates with the interior of the lower ?ne
screen I‘! which is revolvably mounted upon sup
60 porting rollers 26 and may be driven in any con
venient manner. The interior of the lower screen
as shown in Fig. 3, is provided with a helical flight
21 and with elevating vanes 28 at the delivery
end of the flight 21. The flight 21 is formed to
65 automatically convey any corn silk or debris which
has passed through the pump 8 and which has
been removed from the corn kernels in the screen
15, toward the end vanes 28 when the screen ll
revolves; and the vanes 28 are formed to collect,
70 elevate and deliver these particles through an
end discharge cone 29 upon a delivery chute 39.
The separated clean liquid which passes through
the screen i‘! drops directly into the basin H
and the fresh liquid admitted to the circulating
system from the spray pipe 23 may be regulated
forces this liquid through the conveyingconduit
H3 into the upper revolving screen i5. The mix
ture of corn and silk is being delivered.- along the
supply chute l3 and drops by gravity into the
basin H directly above the funnel 9 as illustrat
15
ed in Fig. 6. As this mixture is deposited upon
the surface of the liquid in the basin l I, it causes
a turbulence and the corn kernels drop through
the liquid and are mixed therewith and conveyed
to the pump 8 through the funnel 9. The lighter 20
particles of silk and pieces of corn husk which
are unable to break the surface tension of the
liquid in the basin H, are carried by the con
stantly flowing stream of excess liquid directly
over the weir l4 and are discharged along the
chute I9.
25
Thus, particles of corn silk and debris “
which succeeded in passing to the pump with
the corn kernels, are subsequently transported
through the pipe 10 and are delivered into the re—
volving screen I5.
Here the kernels of corn are
given a thorough rinsing by the spray delivered
by the pipe 23, and the residual silk particles are
washed therefrom and pass into the reservoir 25
with the separated liquid. The ?nally washed
55:0
corn is discharged over the chute 24 at the end 35
of the incline drum l5, and the separated liquid "
together with the debris, is delivered into the
lower screen I‘! where the residual corn silk and
debris are removed and discharged over the chute
30. The separated liquid which drops from the 40
lower screen I‘! replenishes the supply of liquid
in the basin 5 I and is ultimately recirculated or
discharged over the weir 14. In this manner, it
will be apparent, that the silk ?bers and the
lighter particles of corn husk are effectively re P15
moved from the whole grain corn, the corn ker
nels being automatically removed and conveyed
to the upper screen l5 from whence they may
be delivered to any convenient point.
From the foregoing description it will be ob
vious that the present invention provides an
improved corn silk removing system and corn
washing system, which is highly effective and
automatic in its operation. The aparatus is
moreover readily accessible for inspection and 1.55
cleaning, at all times, and when the pump 8
is stopped, the liquid may be readily removed
from the system for cleaning purposes. It has
beenfound, in actual practice, that surface ten
sion of the liquid in the relatively large basin ll, v6.0
effectively removes the major portion of the corn
silk ?bers before the kernels are delivered to the
hydraulic conveying system, and that substan
tially all of the silk is ultimately removed from
the corn in the upper screen 15.
By recirculat .65
ing the liquid separated from the corn in the
screen Hi, the apparatus may be operated with
minimum waste of liquid, and the head of liquid
within the basin H may be readily varied by
merely adjusting the weir l4 and by controlling
the admission of liquid through the pipe 23. The
system is not only extremely simple in its gen
eral assemblage, but may also be used merely for
hydraulic washing and conveying purposes, by
merely elevating the weir l4 and by adjusting
2,119,006
the drain pipe 2| to serve as an over?ow for
maintaining proper level of the liquid in the basin
l8. The improved system has proven highly ef
?cient in actual use and can be installed and
operated at moderate cost.
It should be understood that it is not desired
to limit this invention to the exact details of
construction and to the precise mode of opera
tion herein shown and described, for various
modi?cations within the scope of the claims may
occur to persons skilled in the art.
I claim:—
1. A hydraulic corn silking system comprising,
means forming a liquid basin having extensive
surface area, a wier providing a restricted liquid
over?ow at one side of said basin, means for ad
mitting fresh liquid to a widened portion of said
basin remote from said wier to produce rapidly
increasing ?ow of surface liquid fro-m said basin
toward said wier, an upwardly diverging cone
communicating with said basin between said
liquid admission means and said wier and be»
neath the rapidly ?owing surface liquid passing
over said wier, means for delivering mixed silk
and corn into said surface liquid directly above
said cone and adjacent to said wier, and means
for constantly withdrawing a mixture of liquid
and corn from the bottom of said cone.
2. A hydraulic corn silking system comprising,
3O means forming a shallow liquid basin having ex
tensive surface area, a wier providing a restricted
over?ow for surface liquid delivered from said
basin, means for admitting fresh liquid to said
basin remote from said wier to produce rapidly
increasing ?ow of surface liquid from said basin
as said liquid approaches said wier, an upward
ly open downwardly diverging cone communi
cating with said basin adjacent to said wier and
remote from said liquid admission means, means
40 for depositing mixed silk and corn upon said
rapidly advancing surface liquid directly above
3
said cone, and means for constantly withdrawing
a mixture of liquid and corn from the constrict
ed end of said cone.
3. A hydraulic corn silking system comprising,
means forming a liquid basin having extensive
surface area, a wier providing a restricted liquid
over?ow at one side of said basin, means for ad
mitting fresh liquid to a widened portion of
said basin remote from said wier to produce
rapidly increasing flow of surface liquid from said 10
basin toward said wier, an upwardly diverging
cone communicating with said basin between
said liquid admission means and said wier and
beneath the rapidly ?owing surface liquid pass
ing over said wier, said cone having an annular 15
wall extending upwardly therefrom into said
basin and toward said surface liquid, means for
delivering mixed silk and corn into said surface
liquid centrally within said wall directly above
said cone and adjacent to said wier, and means 20
for removing a mixture of liquid and corn from
the lower portion of said cone.
4. A hydraulic corn silking system comprising,
means forming a shallow liquid basin having ex
tensive surface area, a wicr providing a restrict
25
ed over?ow for surface liquid delivered from said
basin, means for admitting fresh liquid to said
basin remote from said wier to‘ produce rapidly
increasing ?ow of surface liquid from said basin
as said liquid approaches said wier, an upwardly 30
open downwardly diverging cone communicating
with said basin adjacent to-said wier and remote
from said liquid admission means, said cone hav
ing an annular wall extending upwardly there
from into said basin and toward said surface 35
liquid, means for‘depositing mixed silk and corn
upon said rapidly advancing surface liquid with
in said wall and directly above said cone. and
means for constantly removing liquid and corn
from. the lower portion of said cone.
40
FRANK D. CHAPMAN.
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