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Патент USA US2109888

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are
E1 1, 1938.
o. MITCHELL
2,109 ,888
COTTON CLEANING CYLINDER
Flled Jan
6, 1956
2 Sheets-Sheet l
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ORV/LL E
M/Tw/ELL
Arr-Delve K
arch 1, E93&
Q MITCHELL
2,109,88
COTTON CLEANING CYLINDER
Filed Jan. 6, 1956'
2 Sheets-Sheet 2
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Patented Mar. 1, 1938
,
_ 2,109,888.
146MB '
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"12,109,388
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C‘OTTONCLEANING CYLINDER
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OrvilleLMitcheH, lf)allvas,-Tcx.~
i‘Apiplication January 6, 1936, Serial No. ‘57,787
' 13 Claims;
(01.19794) '
'I'hegeneral object of ,this invention is to; pro
'Another'objectof the invention in a drum con
vide a cotton cleaning cylinder-whichwshall ‘be
structedas described; 'is-_t_o' provide flanged ‘strips
provided withintegral blades, the blades being
characterized by extreme’, simplicity and light
ness of Construction while at the same‘ time pos- - located at one sideof the- strip and extending at
5 'se'ssing great strength andrigidity and the work-t right angles to, andjbeing' remote from, a flange $1
10
ing parts of‘ which are‘ readilyfdetachable "for
provided atthe other- edge of'the‘stripj and to 2;?’
purposes of repair and replacement.
‘
‘ Stated'more in detail, an objectof the’inven
angular projections ‘of the drum in such ‘manner
tion is to provide a cleaning cylinder the drum
that the ?anges of the respective strips will pre: '
whereof ‘is formed of separable housing sections
mounted on a frame, the abutting edges whereof
'cédethe blades inithe rotation of the cylinder.
detachably secure the flange of each strip to the
10
‘ Another-‘object of ‘the invention‘ is to provide,
provideangular projections which, are secured, as a separateiarticle of manufacture, a‘bladed
together, and ‘in' detachably securing bladed strip for use on the drums of cotton‘ cleaning
strips tolthe drum by bolts, or, the like, in. such cylinders, said strip-having a bas'e'portion curved
to'confcrrn to the curvature of'the periphery of 15
15' manner, that the'blades of the strip vwill be po
the drum and being provided at one side with a I'
sitioned at a distance from the-‘angular projec
longitudinal ?ange and at*its‘ other with up
‘ tions on the ‘rear side thereof ‘relative to thejdi
rection of rotation‘oi thecylinder.
.
‘
‘
turned equally spaced sections forming‘ blades,
'
Another object of the invention is to provide which blades are remote from‘ and‘higher than
a cleaning cylinder, thefdrum whereof is .formed [the ?ange and extend- ‘at-right ‘angles to the
of separable housing sectionsdetachably mount,
latter."
ed on a frame, the abutting'edge‘s‘ whereof pro
vide angular projections, and in detachably se
curing avbladed, strip to each set of angjular'pro
by bolts, or‘ the like, which preferably
'25 jections
at the same time secure the angular projections
of the housing sections together.
'
Another object of the invention, in a drum con
structed as above described. is to ‘provide ,for
vdetachably mounting blades on said drumby
means of a number of independent metal strips
extending longitudinally of the drum, and each
of which issecuredat one side to the drum and
at its other side is provided withtintegral blades
35 which are of greater height than 'the angular
projections of the housing sections and extend
40
w
>
‘
-
In order that the advantages of my invention
may be more clearly appreciated, it maybe
brie?y explained that the cylinders commonly
used‘ in connection with cotton cleaning machin
‘ery'comprise drums of some‘ sort, having either 1
vanes extending from one end of the drum‘ to
the other or rows of spikes secured to the periph
ery of ‘the drum in staggered relation to each
other.
V
’
'
l
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'
30
' ‘Since it requires less power to force the s'epa- ‘
rated ‘spikes through heavy bodies of cotton, and
because the spikes‘ are moreeffec'tive for loosen
ing hulls and trash from the cotton, thistyp'e
of drum- is generally regarded as preferable to 35
drums having longitudinal vanes, although the
at right angles to the length of the strip, so as
to move edgewise relative to the direction‘ of ro
spiked form of drumeis considerably more ex
pensive to manufacture than thedrum, or clean
tation of the cylinder.
ing cylinder, provided‘ with vanes.
'
Another object of the invention, in a drum
constructed as above described, .is to provide for
.
' ,VMy improved construction of cleaning cylinder‘
embodiesthe strength of the vanev construction»
detachably mounting blades on‘ said drum by, of cylinder with the'penetrating power of‘the
spike construction, in that 'I provide the cylin
extending longitudinally of the drum, and each der withblades mountedaround and projecting
means of a number of independentnietal strips
from the periphery of the drum-in a manner that
adapted to be secured to the angular projections causes the blades togmove edgewise with thero
of the drum ‘an-d‘at its other side with integral ,tation of the cylinder against ‘or through the "
blades formed by bending uptequally spaced sec stream‘ or bodies of cotton being forced around
tions of the edge portion of the strip at right the screen surface by the rotation oi the cylin
angles toqits base, or body, and which blades der. Thus such blades-being'flat and relatively
45 'of which is provided at one side with a ?ange
are of ‘ greater height than the angular projec
wide are ‘practically incapable of being bent'inr ‘
tions of the housing sections and extend at right
edgewise relative to the‘direction of rotation of
the direction of their extension,’ and moving
edgewise, vthey can be inore readily forced
through the cotton than spikes, in that they
the cylinder.
present a" thinner surface of metal to engage the 55
angles to the ?ange of the strip, so as to move
'
>
2
2,109,888
stream or bodies of cotton. They are therefore
more effective than spikes for loosening hulls
and trash from the bodies of cotton, besides hav
ing less tendency to sweep the cotton in a body
around the surface of the screen.
Another disadvantage arising from the use of
a drum equipped with spikes, and which is
avoided by the use of my bladed construction of
cylinder, is the fact that when the ends of the
10 spikes engage the long locks of cotton containing
member, ‘I, are secured by bolts, 6*}. Preferably
four housing sections 1 are employed to form
the shell of the drum, and. each of these sec
tions is provided at one side with an outwardly
extended ?ange, 8, that are bolted together to 5
form a solid drum. The bolts, 8a, which secure
the ?anges, or angular projections 8 of the hous
ing section 1 together, also extend through the
bolt-holes 3a in the ?anges 3 of the bladed strips,
to secure the bladed strips to the angular pro 10
jections in a manner such that each row of
a large number of seed, the trailing ends of the
locks tend to whirl or twist, which ‘results in the , blades I will lie to the rear of the ?anges 3 and
?bers between the seeds being spun more or less
into threads, and the ends of the locks trailing
15 back on each side of the spikes, being in contact
with each other often rope or twist together; and
such spinning or roping action results in the pro
duction of naps or threads by the action of the
gin saws which lowers the grade or spinning
20 value of the lint. With my improved cylinder,
the ends of the blades which engage the cotton as
it is being forced around the screen are not only
of sufficient width to provide the necessary
strength, but are wide enough to prevent the
25 ends of large locks engaged by the front edge
of the blades trailing back into contact with each
other, which prevents the ?bers being roped or
twisted together, and which experience has
shown. results in marked improvement in gin
30 ning results, especially with the long-staple Va
rieties of cotton.
.
I By referring to the “width” of the blades, I
35
intend to designate its linear extension in the
direction of rotation of the cylinder; and this
width may be of any desirable, or practicable
extent, and will always be more than double the
thickness of the blade.
The invention is illustrated in the accompany
ing drawings in which
Figure 1 is a perspective view of a portion of
one of my improved bladed strips;
Figure 2 is a cross-section through a cleaning
cylinder constructed according to my invention;
Figure 3 is a longitudinal sectional view of one
45 end portion of said cleaning cylinder taken on
the line 3—3 of Fig. 2;
Figure 4 is a developed plan view of a portion
of the cylinder on a reduced scale, illustrating
the staggered relation of the blades; and
Figure 5 is a cross-sectional view of a portion
50
of a cleaning cylinder illustrating a modi?cation
in the manner of securing the bladed strips to‘
the drum of the cylinder.
Referring to Figure 1, the blades, 1, are formed
55 on a press with suitable dies from a strip of metal
of a thickness to give the strength required, the
base, 2, or wider portion of the strip, being curved
transversely to conform to the curvature of the
drum on which the strips are to be mounted.
60 The front edge of the strip is bent up at right
angles to» provide a ?ange, 3, to provide means
for securing the strip to angular projections of
the drum, the ?ange 3 being of less height than
the blades I.
The blades I are bent at right
65 angles to the base 2 at equal distances apart
along the rear edge portion of the strip, are
provided with relatively wide ?at outer ends and
extend at right angles to the ?ange 3. The latter
is provided at intervals throughout its length with
70 bolt-holes, 3a.
The cleaning cylinder proper comprises a cen
75
angular projections 8, relative to the direction
of movement of the cylinder, and thus be pulled
rather than pushed around with the rotation 15
of the cylinder. This is quite an important fea
ture of the invention, since obviously if the
cylinder were rotated in the opposite direction
from that shown by the arrow in Figure 2, hard
substances passing into the machine with the 20
cotton and engaged by the blades would tend to
lift the bladed strip away from the drum and
force the blades into the screen, thus destroying
the screen and seriously damaging the cylinder.
When, however, the cylinder is rotated in the 25
direction shown by the arrow, or with the blades
trailing the angular projections of the drum to
which the bladed strips are secured, any hard
substances getting into the machine will merely
force the base section of the strips tight against 30
the drum, there being no tendency for the blades
to be lifted or forced out into contact with the
screen.
In the modi?ed construction, shown in Figure
5, the base 2 of the strip is not provided with 35
a ?ange but instead is connected to the periph
ery of the drum by bolts ‘la, the rear edge of
each strip simply abutting against the side of
the angular projection or ?ange 8, adjacent which
each bladed strip is secured.
40
When constructed as shown and described,
neither the angular projections of the housing
sections nor the front ?ange of the bladed strip
of the preferred construction project far enough
from the drum to act on the cotton, the action 45
being con?ned to the outer ends of the blade.
It will be apparent that if the blades formed
in the trailing edges of the longitudinal strips
did not project out from the drum a greater dis
tance than the ?ange at the front of the strip, 50
or the angular projections on the drum to which
said ?ange is secured, the blades would not be
effective. That is to say, the action would be
the same as with a vaned cylinder.
Aside from this bladed type of cylinder being 55
unusually effective in cleaning cotton and pre
paring it for the extracting mechanism by loos
ening hulls from entanglement with the cotton,
it is extremely simple and inexpensive to con
struct. Also», it is stronger than the spiked type
of cylinder and has the further advantage of
being equipped with quickly replaceable parts
in case of damage.
With my invention, any one or all of the bladed.
strips can be quickly removed or replaced, where
as with a spiked drum an entirely new cylinder
must be substituted if the spikes become badly
worn or damaged.
I claim:
1. A cotton cleaning cylinder comprising, in 70
combination, a shaft, a drum mounted thereon
the periphery whereof is formed by a plurality
tral shaft, 4, having a series of disks, 5, secured
thereto, as by set-screws, 5B, the periphery of
each disk having a ?ange, 6, as shown in Fig
of housing sections the abutting edges of which
are provided with angular projections, and a
ure 3, to which the drum sections or housing
series of strips secured to said projections'and 75
2,109,888
10
15
25
30
lar projections and separated blades remote from
said ?ange, and means securing said angular
' projections and ?ange together.
5. A cotton cleaning cylinder comprising, in
combination, a shaft, a drum mounted thereon
the periphery whereof is formed by a plurality
of housing sections the abutting edges of which
are provided with angular projections, a series
of strips each of which is provided throughout
40 its length with separated blades extending at
right angles to the length of the strip and with
a ?ange remote from said blades and extending
along one side of said angular projections, and
means securing said angular projections and
45
?ange together.
combination, a shaft, a cylindrical drum mounted
thereon the periphery whereof is formed by a
plurality of housing sections the abutting edges
50 of which are provided with angular projections,
and a series of longitudinal strips curved to con.
form to the curvature of the drum detachably
secured at one side to said projections, and pro
vided with blades at its other side.
7, A cotton cleaning cylinder comprising, in
15
20.'
combination, a shaft, a drum mounted thereon
the periphery whereof is formed by a plurality
of housing sections the abutting edges of which 35
are provided with angular projections, a series
of strips each of which is provided throughout its
length with separated blades extending at right
angles to the length of the strip and with a lon
gitudinal ?ange remote from said blades and
40
extending along one side of said angular pro
jections, and means securing said angular pro
jections and ?anges together with the blades of
the respective strips having staggered relation to
12. A cotton cleaning cylinder comprising, in 45
combination, a shaft, a drum mounted thereon
the periphery whereof is formed by a plurality
of housing sections the abutting edges of which
are provided with outward angular projections,
and a series of longitudinal, bladed strips se 50
cured to the drum, the blades whereof have ?at
outer ends higher than said angular projections
and extend at right angles thereto, said blades
being located at one side of and at a distance
from said projections.
mounted thereon the periphery whereof is formed
13. A cotton cleaning cylinder comprising in
combinationa shaft, a drum mounted thereon,
the periphery whereof is formed by a plurality
of housing sections, the abutting edges of which
edges of which are provided with angular
jections, and a series of strips secured to
projections, and having blades located at
side of and at a distance from the latter
1O
to said respective angular projections.
11. A cotton cleaning cylinder comprising, in
combination, a shaft, a closed cylindrical drum
. by a plurality of housing sections the abutting
60
5
each other.
6. A cotton cleaning cylinder comprising, in
55
3
having blades located at one side of and at a‘ jections and are provided'with ?at outer ends
distance from the latter.
'
V
positioned to move edgewise relative to the di
2. A cotton cleaning cylinder comprising, in rection of the movement of the drum.
combination, a shaft, a drum mounted thereon
9. A cotton cleaning cylinder comprising, in
the periphery whereof is formed by’ a plurality combination, a shaft, a closed cylindrical drum
of housing sections the abutting edges of which mounted thereon the periphery whereof is formed
are provided with angular projections, and a by a plurality of circular housing sections the
series of strips secured to said projections and abutting edges of which are provided with angu
having spaced blades provided with ?at outer lar projections, a series of metal strips each of
ends extending at right angles to the length of which has one side bent outward to provide a
the strips and located at one side of and at a ?ange and its other side provided at intervals
distance from said projections.
with up-turned sections providing blades remote
3. A cotton cleaning cylinder comprising, in from and extending at right angles to said ?ange,
combination, a shaft, a drum mounted thereon and ,means for detachably securing the ?anges
the periphery whereof is formed by a plurality of said strips to one side of the respective pairs
of housing sections the abutting edges of which of said angular projections in such manner as
are provided with connected angular projections, to cause said ?anges to- precede the blades in the
a series of strips extending longitudinally of the direction of rotation of the cylinder.
cylinder each of which has a ?ange extending
10. A cotton cleaning cylinder comprising, in
along one side of said angular projections, and combination, a shaft, a drum mounted thereon
a series of separated blades extending along its the periphery whereof is formed by a plurality
of housing sections the abutting edges of which
other side, and means securing said angular pro
jections and ?ange together.
are provided with angular projections, a series
4. A cotton cleaning cylinder comprising, in of longitudinal strips each of which has its for
combination, a shaft, a drum mounted thereon ward edge portion, relative to the direction of ro
the periphery whereof is formed by a plurality tation of the cylinder, bent outward to form a
of housing sections the abutting edges of which ?ange and its rear portion provided with sep
are provided with connected angular projections, arated bent-up sections providing blades ex
a series of independent strips, each of which has tending at right angles to the length of the strip,
and means for detachably securing said ?anges
a ?ange extending along one side of said angu
pro
said
one
and
of greater height than said angular projections.
.8. A cotton cleaning cylinder comprising, in
65 combination, a shaft, a closed cylindrical drum
mounted thereon the periphery whereof is formed
by a plurality of housing sections the abutting
edges of which are pro-vided with angular projec
tions, and a series of bladed strips secured to
70 said projections and supported on the periphery
of the drum, and the blades of which are located
at one side of and at a distance from said pro
’
55
are provided with angular projections, a series
of strips each of which is provided with separat
ed blades extending at right angles to the length
of the strip and with a longitudinal ?ange in
advance of the blades in the direction the cyl 65
inder rotates and extending along one side of said
angular projections and means securing said
angular projections and ?anges together with
the blades of the respective strips having stag
gered relation to each other.
ORVILLE MITCHELL.
70
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