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Патент USA US3086263

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April 23, 1963
O. MITCHELL ETAL
3,086,254
COTTON CLEANING MACHINERY
Filed Oct. 7, 1959
l?/l/E'A/TO R51
ORV/L LE M/TCHE LL,
EUGENE 60200/4 WALTOMJR -
United States Patent
1
I "ice
3,086,254
Patented Apr. 23, 1963
2
as an initial cleaning saw cylinder for one stream of a
3,086,254
Orville Mitchell and Eugene Gordon Walton, In, Dallas,
COTTON CLEANING MACHINERY
Tex., assignors to John E. Mitchell Company, Dallas,
Tex., a corporation of Missouri
Filed Oct. 7, 1959, Ser. No. 845,004
split stream ?ow, and which reclaimer saw cylinder re
turns the reclaimed cotton through the main cleaning
action along with the cot-ton which initially reached that
main cleaning area by way of the other stream.
Other objects and advantages will be apparent to those
skilled in the art upon studying the more detailed de
4 Claims. (Cl. 19-203)
scription to follow.
The drawing is a front-to-rear side view, in section, of
This invention relates to cotton cleaning machinery,
and particularly to improvements in such machinery 10 the cotton cleaning machine.
Referring to the drawing, there is illustrated a cotton
which involves a reduction in-the number of saws re
cleaning machine 10 having a housing 11. There is an
quired to clean the cotton, but without a reduction in the
inlet 12 to the housing 11 through which cotton may pass
capacity of the machinery which would normally be ex
to be directed by a pair of feed rollers 13 and 14. The
pected to accompany such an improvement.
As is well known to those skilled in the processing art, 15 feed rollers 13 and 14 rotate at a relatively slow rate in
cotton which has just been picked, stripped, snapped, or
the direction of the arrows and press the cotton down
wardly between the vanes 15 of a directing cylinder 16.
The directing cylinder 16 rotates in a counterclockwise
and other extraneous material which must be removed
direction at a much higher speed than that of the feed
before the cotton is introduced into a cotton gin. The
present invention involves a machine which will e?iciently 20 rollers 13 and 14 and directs the cotton about the left
side of it as viewed in the drawing. There is a generally
clean freshly harvested cotton, removing substantially all
arcuate ba?le 17 adjacent this left side of the do?ing
the trash, sticks, and other extraneous material with yet
cylinder 16 for retaining the cotton between the ba?le
a negligible loss of cotton.
17 and the cylinder 16 and between adjacent vanes 15.
Stated in more detail, it is an object of the invention
In addition, the ba?le 17 extends somewhat toward the
to provide a split stream cotton cleaning machinery hav
right side of the cylinder 16 and beneath it, as indicated
ing a plurality of cleaning saw cylinders in conjunction
at numeral 18.
with a reclaimer saw cylinder, in which the reclaimer
Below and somewhat to the right of the directing cylin
saw cylinder also functions as a cleaning saw cylinder.
der 16 is an extracting saw cylinder 19 having cotton
In saw cleaning machinery, at least heretofore, with
otherwise harvested, is heavily laden with sticks, trash,
reference particularly to split stream cotton cleaning 30 impaling teeth 20. The extracting cylinder is spaced a
considerable distance from the end 18 of the ba?ie 17 so
machinery, the cotton introduced into the mechanism
that some, but not all, of the cotton from the vanes '15
has been immediately divided into two cleaning paths. In
will reach the teeth 20. The extracting cylinder rotates
this prior art machinery, each cleaning path included
in a clockwise direction and is located in the path of part
one or more saw cylinders, together with appropriate
of the cotton as it travels from the directing cylinder 16
dof?ng and directing means, by which the cotton was sub
along and away from the end 18‘ of the baffle 17. As the
jected to a cleaning action. During the course of the
saw cylinder 19 rotates at a high rate of speed, with the
cleaning action, the saw cylinders would impale the cot
bulk of the cotton impaled upon the teeth 20, most of the
ton upon their teeth and ?ing the trash. and sticks away
hulls and trash, such as leaves and twigs, will- be slung
from the cylinder. This trash and sticks, together with a
not insigni?cant amount of cotton, would fall to the lower 40 away from the cylinder 19. In addition, because of the
largespace between the end 18 of the baffle 17 and the
area of the cleaner housing to be treated by a cotton re
saw cylinder 19, a considerable amount of cotton will
claimer arrangement. The reclaimer would comprise
drop toward the lower portion of the housing 11. The
a saw cylinder which impaled the cotton, but permitted
manner in which this latter stream of cotton is treated will
the sticks and trash to fall through the bottom of the
housing to be expelled by an appropriate discharge 45 be made clear hereafter. Su?‘ice it at present to point out
that the saw cylinder 19 cooperates with the end 118 of the
mechanism. The cotton reclaimed then wouldbe re
batile 17 to divide the cotton which leaves the directing
turned through the main cleaning action. The principal
cylinder 16 into two streams of ?ow, one being the stream
examples of these prior art cleaning machines are dis
of cotton which is picked up by the teeth 20 of the saw
closed in US. Patents No. 2,739,353 and No. 2,776,454,
assigned to the same assignee as is the present invention. '' cylinder 19, and the other stream being the ?ow of cot
ton which passes between the saw cylinder 19 and the
In the present invention, the cotton introduced into
baffle end 13 toward the bottom of the housing.
the machine is divided into'the two streams as in the prior
The cotton held by the teeth 20 in the saw cylinder 19
art machines. One of these streams is-directed toward a
rotates past a kicker roll 24 which rotates in a clockwise
cleaning station. However, the other stream is directed
immediately downwardly toward the reclaimer saw. So 55 direction for knocking back hulls and the like which might
far as this other stream is concerned, the reclaimer saw
operates as the initial cleaning saw. It impales the cotton
as do the other cleaning saws and slings away the trash
cling to the cotton. The impaled cotton then reaches a
dotting cylinder 25 which rotates in'a counterclockwise
direction at a greater rotational speed than that of the
to be discharged from the bottom of the housing. The 60 saw cylinder 19‘. The do?ing cylinder 25 wipes the cot
ton from the saw cylinder 19 and slings it onto the teeth
26 of another extracting saw cylinder 27. There is
through the main cleaning path, which may consist of one
appropriate baf?ing 28 for assuring that the cotton which
‘or more cleaning saw cylinders, illustrated in the present
is picked up by the do?’mg cylinder 25 will at least eventu
invention as being two saw cylinders.
ally be forced to travel the path toward the saw cylin
In addition to serving as the initial cleaning saw, for 65 der 27.
this other cotton stream, the reclaimer saw performs its
Returning to the stream of cotton which escaped be
normal reclaiming function for both the one stream which
tween the end 18 of the baffle 17 and the saw cylinder
was directed toward an initial cleaning saw cylinder, and
19 toward the lower area of the housing 11, there is
for all cotton which passes through the main cleaning
a recleaning and reclaimer saw cylinder 30 at this lower
station. It will be clear then that an important object of 70 housing area. The saw cylinder 30 has teeth '31, and is
in other respects similar to the saw cylinder 19. It ro
the present invention is to provide a cotton cleaning ma
tates in a counterclockwise direction and impales virtu
chine in which the reclaimer saw cylinder also operates
cotton is dotted from the reclaimer saw and directed
3,086,254
'
4
3
ally all the cotton which reaches it. There is a ba?ie 32
this stage of the cleaning operation will drop toward the
within the housing for effectively directing cotton onto
saw cylinder 30 along with the stream of cotton inten
tionally directed toward that saw cylinder. All of the
cotton which reaches the saw cylinder ‘30 is subjected
the teeth 31 of the cylinder 30. The trash which is slung
from the saw cylinder 3!} is allowed to escape between a
brush 33 and an adjustable gate 34, in the manner which 5 to a cleaning action by that saw cylinder, and the sticks
is known in the art. The cotton is dotted from the saw
and trash are eliminated between the brush 33 and the
cylinder 30‘ by a dof?ng cylinder 35, rotating in a clock
wise direction and at a higher speed than does the saw
cylinder 30.
There is a baffle '36 for retaining the cotton between the
brushes of the do?ing cylinder 35, and a second ba?ile 37
for restricting the opening above the do?ing cylinder 35.
adjustable gate 34, and between the bars 54.
The cotton is dotted from the saw cylinder 30‘ by the
dot-ling cylinder 35 and ?ung onto the saw cylinder 27.
In the meantime, the cotton will have been doffed from
the saw cylinder 19 by the do?'ing cylinder 25, and directed
toward the say cylinder 27. It is then doffed and cleaned
again by the saw cylinder 44. Thus, all the cotton is
subjected to the cleaningaction of the saw cylinders 27
The do?ing cylinder 35 thus slings the cotton from the saw
cylinder 30‘ between the ba?ies 36 and 37 into the area
between the saw cylinders 19 and 27. A continuation of 15 and 44, approximately half having been cleaned initially
the bathe 28‘ helps control the path of the cotton from
by the saw cylinder 19 and approximately half by the
the do?ing cylinder 35 in such a manner that it will be di
saw cylinder 30. The cotton is then discharged through
rected to the saw cylinder 27.
the chute 48 to the cotton gin. The sticks and trash and
It can now be understood that substantially all the cot
some cotton, which escapes between the beater bars 40
ton which is to be cleaned eventually is directed onto 20 and 46 are directed toward the reclaimer saw cylinder 50.
the cleaning saw cylinder 27.
The sticks and trash are permitted to be discharged, as
The cotton which is impaled upon the teeth ‘26 of the
has already been described, while the reclaimer permits
saw cylinder 27 passes a plurality of spaced beater bars
the reclaimed cotton to be returned to the main cleaning
40. These beater bars permit sticks, hulls and trash, to
action. This return of the cotton is accomplished by the
gether with a small percentage of cotton, to pass between 25 do?’ing action of the reclaimer and cleaning saw 30 which
them and downwardly toward the lower section of the
picks the cotton off the reclaimer saw 50 and returns it
housing. The cotton which remains impaled upon the
between the ba?les 36 and 37 to the cleaning saw cylin
teeth 26- (and this constitutes most of the cotton) is
der 27.
doffed by a do?ing cylinder 41, which cooper-ates with
Various changes and modifications may be made within
baffling 4-2 and 4-3 to direct and sling the cotton onto an 30 the process of this invention as will be readily apparent
other re-cleaning saw cylinder 44. The cotton is impaled
to those skilled in the art. Such changes and modi?ca
on the teeth 45 of the saw cylinder 44 and subjected to
tions are within the scope and teaching of this invention as
a ?nal cleaning action by the cooperation of the saw cylin
de?ned by the claims appended hereto.
der 44 with another group of beater bars 46. The sticks,
What is claimed is:
hulls and trash, which were not separated by the previ 35
1. ‘In a cotton cleaning machine: means for introducing
ous cleaning operation, are permitted to escape between
cotton into the machine; ?rst and second cleaning saw
the beater bars 46, and with them passes another small
cylinders; means for directing some of the cotton toward
percentage of the cotton. The cleaned cotton is then
the ?rst cleaning saw cylinder and the rest of the cotton
dotted from the saw cylinder 44 by a dot?ng cylinder 47
toward the second cleaning saw cylinder; the cleaning saw
and directed through a chute ‘48 to a cotton gin (not 40 cylinders each having means for impaling cotton while
shown).
slinging away extraneous debris; a discharge opening for
The sticks, trash, and what cotton was permitted to
the debris; the second cleaning saw cylinder being posia
escape between the beater bars 40' and 46 passes down
tioned for interception of cotton directed with the debris
wardly, as directed by a baf?e 49, toward the lower section
from the ?rst cleaning saw cylinder toward the discharge
of the housing where a reclaimer saw cylinder 50 is 45 opening and for discharging the debris through the dis‘
located. The teeth 51 of the reclaimer saw cylinder 50
charge opening; a third cleaning saw cylinder; means
engage the cotton which falls onto them, while at the same
for dotting cotton from the ?rst cleaning saw cylinder and
time slinging away the trash. A brush 52 further impales
for directing it to the third cleaning saw cylinder; means
the cotton upon the teeth 51, but permits the trash and
for do?ing cotton, directed to and intercepted by the sec
sticks to pass between it and a ba?e 53. In addition,
ond cleaning saw cylinder, from the second cleaning saw
there are a plurality of bars 54 which permit the sticks,
cylinder and for directing it to the third cleaning saw
but not the cotton, to pass between them.
cylinder; and a reclaimer saw cylinder positioned below
The reclaimed cotton is do?‘ed from the teeth 51 of the
the third cleaning saw cylinder for intercepting all of
cylinder 50 by the faster moving saw cylinder 30 and re
the cotton dropped with trash from the third cleaning
turned by means of the dolfer 35 to the saw cylinder 27 55 saw cylinder; the second cleaning saw cylinder being posi~
for a repetition of the cleaning cycle. The bulls and trash
tioned adjacent the reclaimer saw cylinder for, among
which fell from the reclaimer saw cylinder 51 and the
other things, do?ing the cotton from the reclaimer saw
reclaimer and dofier cylinder 30 drop onto a screw con
cylinder intercepted by the reclaimer saw cylinder.
veyor 55 for delivery to the exterior of the machine.
2. The machine of claim 1 including a fourth cleaning
The operation of the machine may be summarized as 60 saw cylinder; means for do?ing cotton from the third
follows. The cotton which enters the machine at the
cleaning saw cylinder and for directing it toward the
inlet 12, and is discharged by the feed rollers 13 and 14
fourth cleaning saw cylinder; the arrangement of the
onto the directed cylinder 16, is split into two streams
cleaning saw cylinders being such that substantially all
with part of the cotton being impaled by the teeth 20 of
the cotton is subjected to cleaning actions by both the
the saw cylinder 19, and part being permitted to pass be 65 third and fourth cleaning saw cylinders, the reclaimer
tween the saw cylinder 19 and the baffle end 18 toward
saw cylinder being positioned to intercept all trash and
the lower area of the housing 11. The cotton which is
cotton carried therewith dropped from the fourth cleaning
impaled by the saw cylinder 19' is whirled at a high rate
saw cylinder.
of speed causing hulls, sticks and trash to be slung away
3. The machine of claim 2 wherein the fourth cleaning
from that saw cylinder and gravitationally directed to 70 saw cylinder is higher than the third.
ward the lower area of the housing. In addition, a small
4. A cotton cleaning machine comprising a housing
percentage of cotton will be ?ung off the saw cylinder 19.
with a cotton inlet thereto, a ?rst cleaning saw cylinder,
This small amount of cotton falls toward the re-cleaning
a second cleaning saw cylinder, and a third cleaning saw
and reclaimer saw cylinders 30.
g
cylinder, the second cleaning saw cylinder being posi
' The sticks, trash and small percentage of cotton from 75 tioned below both the ?rst and third cleaning saw cyl
3,086,254
5
6
inders, means for directing some of the trashy cotton in
troduced through the inlet to the ?rst cleaning saw cyl~
inder and the rest of the trashy cotton to the second clean
ing saw cylinder, means for delivering cotton from the
?rst cleaning saw cylinder to the third cleaning saw cyl
inder, .a discharge outlet below the second cleaning saw
cylinder, a reclaimer saw cylinder, the reclaimer saw
cept cotton carried therewith while passing the trash to
cylinder being positioned adjacent the discharge outlet
below the third cleaning saw cylinder and in the path of
trash expelled from the third cleaning saw cylinder to 10
intercept cotton carried with the trash while passing the
trash to the outlet, the second cleaning saw cylinder being
positioned adjacent the reclaimer saw cylinder to dotf
cotton therefrom and also being positioned in the path of
trash expelled from the ?rst cleaning saw cylinder to inter 15
the reclaimer saw cylinder, means to convey cotton from
the second cleaning saw cylinder to the third cleaning
saw cylinder, an outlet for the cleaned cotton, and means '
to deliver cotton from the third cleaning saw cylinder to
the outlet.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,426,588
1,709,714
1,914,893
2,739,353
Mitchell _____________ __ Aug. 22, 1922
Farley _______________ __ Apr. 16, 1929
Mitchell _____________ __ June 20, 1933
Mitchell et a1. ________ __ Mar. 27, 1956
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