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Патент USA US2109176

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Feb 22, 1938.
H H_ KMGHT
2,109,176
FIBER CUTTING MECHANISM FOR TAPE CONDENSER OR SIMILAR MACHINES
Filed 001;. 26, 1937
2 Sheets-Sheet l
Figzl.
‘Henry H.Inver?or.
Kmgh'r
.~
I » MéW
Feb. 22, 3938.
H. H. KNIGHT
FIBER CUTTING NECHANIS
2,109,176
M FOR TAPE CONDENSER OR SIMILAR MACHINES
Filed Oct. 26, 1937
2 Sheets-Sheet 2
Fig.8.
invenTor:
Kn ig h?
ATTys.
2,109,176
Patented Feb. 22, 1938
ATENT OFFMIE
UNITED STATES
2,109,176
FIBER CUTTING MECHANISM FOR TAPE
CONDENSER OR SIMILAR MAClHNES
Henry H. Knight, Canton, Mass, assignor to Davis
& Furber Machine Company, North Andover,
Mass, a corporation of Massachusetts
Application October 26, 1937, Serial No. 171,076
12 Claims. (Cl. 19—151)
The invention has for its further object to pro-1
This invention relates to a machine provided
with means for progressively dividing a web of
?ber into slivers and diverting contiguous slivers
into diverging paths. Such a machine or mech
5 anism forms a part, for example, of the machine
known in the textile art as a tape condenser. An
10
15
20
N) Ul
vide means for properly positioning the knife,
both in its operative position and in an inopera
tive or rearward position where it will not inter- .
fere with the machine and the slivers when rel~
atively short ?ber stock is being handled and
ordinary type of tape condenser is provided with
there is no objectionable extension of ?bers be
a pair of grooved dividing rolls with the grooves
in one roll opposite to the raised portions of the
other roll and with a series of tape runs passing
around the rolls and leading therefrom in di
verging paths. A web of ?ber such as the web
doffed from a carding machine is fed to the di
viding rolls which with the tapes act to sever the
web of ?ber into a series of contiguous slivers.
These slivers are carried away from the dividing
rolls by the tape runs with the tape runs al
ternately diverging and consequently with con
tiguous slivers diverging. A series of alternating
slivers therefore pass upward to a set of elements
such as aprons which act to form the slivers into
rovings, while the other series of alternating sliv
ers pass downward to another set of such ele
ments.
When a web of ?ber, such, for example, as that
do?ed from a carding machine, is thus divided
tween contiguous diverging slivers.
into slivers, the separation at the dividing point
between contiguous slivers takes place, not by a
clean cut but by more of a pulling or tearing
When the web of ?ber is com
5.0 o apart of the web.
posed of long staple, as in the case of mohair,
high grade wool, and certain other ?bers, many
of the long ?bers remain extended between ad
jacent slivers as they diverge from the dividing
‘ point.
As such contiguous slivers continue in
their diverging paths, the ?bers thus connect
ing the two slivers either have to be broken apart
or pulled by one sliver entirely out from the other
sliver. In either case, an undesirable strain is
40 placed upon the mechanism and a varying ac
cumulation or mass of fiber is pulled from one
‘These and other objects and features of the
invention will appear more fully from the ac
companying description and drawings and will
be particularly pointed out in the claims.
Since a tape condenser provided with dividing
rolls and sliver-carrying tapes, which is here se- .
lected to illustrate a preferred form of the inven
tion, is a machine well known to those skilled
in the textile art, there is here illustrated and de
scribed only so much thereof, and that more or
less diagrammatically, as is necessary to a dis—
closure of a preferred form of the invention.
In the drawings:
20
‘
Fig. 1 is a view of a small portion of such a
machine in the vicinity of the dividing rolls look
ing toward the inside of one side frame.
Fig. 2 is a plan view of a small portion of the 25
side of the machine opposite to that shown in
Fig. 1.
Fig. 3 is a side elevation of the construction
shown in Fig. 2.
Fig. 4 is a view partially in elevation and par
tially in vertical cross section taken on the line
4~4 of Fig. 2.
'
Fig. 5 is a View similar to Fig. 3 showing an
other form of construction.
In the construction illustrated, the machine
comprises a pair of vertical side frames I and 2
in which are journalled the cooperating dividing
rolls 3 and 4. Each of these rolls is provided with
grooves 5 of the width of the desired slivers al
ternating with ribs 6 of the same width. The
grooves and ribs in one roll are opposite, respec
sliver to the other, thus rendering the slivers un
tively, to the ribs and grooves in the other roll.
even or of non-uniform cross section, as well as
As usual, the endmost ribs and grooves are wider
than the others to take care of the waste edges
causing ragged edges on the slivers.
It is the object of the present invention to pro
vide for the severance of any ?bers thus extend
ed between adjacent diverging slivers before any
deleterious eiiect is produced by such ?bers on the
slivers.
The invention has for its further object to pro
vide more speci?cally a knife extending parallel
with and at the rear of the line of divergence of
the slivers and reciprocating this knife so as to
cut any ?bers which extend between the adjacent
diverging slivers.
of the web. The tapes employed are usually end
less and in their runs pass from the groove of
one roll onto the rib of the opposing roll with the
runs diverging at the rear from the bite of the
rolls. For example, a tape 1 passing down in a
groove of the dividing roll 3 passes therefrom ’'
onto a rib of the lower roll 4, while the next tape"
8 passes up in ‘a groove in the lower roll 4 onto
a rib on the roll 3. Thus,‘ as will be well under
stood, the tape runs alternately diverge at the
rear of the rolls. The web 9 of ?ber as it is fed
2
2,109,176
to the dividing rolls is divided by the rolls and
tapes into a series of slivers extending across
the width of the web and these slivers are car
ried away from the bite of the rolls between the
respective tape runs and underlying ribs, all in
a well-known manner, so that the tape runs en
gaging the rolls and alternately diverging there
from carry away from the rolls contiguous slivers
detached from the web of ?ber.
10
If, as already pointed out, the web is composed
of or comprises long staple ?ber, many of these
?bers, as indicated at If) in Fig. l, are extended
between adjacent diverging slivers with the 0b
jectionable consequences already pointed out.
15
In this invention, cutting means are located
and operate at the rear of the line of divergence
of the slivers and act to cut any such ?bers ex
tended between the adjacent diverging slivers.
In the preferred construction illustrated, in
20 Figs. 1 to 4, inclusive, a suitable'casing or bracket,
herein shown as a hollow, generally rectangular
casting ii is secured to the inside of the side
frame l as by bolts it‘ and a similar casting I3
is secured to the inside of the side frame 2 di
25 rectly opposite. In each of these castings there
is mounted for forward. and rearward sliding
movement substantially in alignment with the
bite of the dividing rolls a guide i4. As shown,
each guide slides in a slot and is held in place by
30 a plate i5 inside the casting. A knife support,
illustrated as a square metal rod It, extends par
allel with the dividing rolls and is mounted for
endwise reciprocation in the guides 14, for that
purpose being shown as passing through square
holes in the guides. A knife blade I l of thin steel
is secured to the knife support I6 as by being
clamped thereon between the support and a
clamping plate l8. This knife blade projects for
ward from the support and the parts are so lo
450 cated that when the knife is in operative posi
tion, the edge of the knife is close to the bite
of the dividing rolls in position to engage and
sever any ?bers extending between the diverging
tape runs.
'
‘
In order to effect an efficient cutting operation,
the knife blade is reciprocated endwise with suf
?cient rapidity to insure cutting of the ?bers
before they can travel any appreciable distance
with the tapes and to insure against objectionable
collection of grease and lint on the knife blade.
Within the broader scope of the invention, any
suitable means may be employed for thus recip
rocating the knife, but preferably this reciproca
tion is effected by driving connections with a
In the construc
tion shown in Figs. 1 to ll, inclusive, 8. vertical
shaft is is mounted in a bracket 28 secured to
the outside of the side frame 2. This shaft has
secured thereto a pulley 2| driven by a belt 22
60 from a pulley 23 upon a driven shaft 24 which
may be, for example, one of the shafts used for
operating the condensing aprons in a tape con
denser. This shaft !9 has secured thereto at its
lower end a disk 25 carrying an eccentric pin 26.
This pin enters an aperture in the end of a link
21 pivoted at 28 at its inner end between bifur
cations 29 formed upon or secured to the end of
the knife support 56. This link connection passes
through a suitable aperture 30 in the side frame.
It will thus be seen that when the machine is in
' moving part of the machine.
operation with the, parts thus connected, the
knife will be given the required reciprocating
motion.
'
The same machine or tape condenser is fre
75 quently employed for handling webs of ?ber of
different staple length and may frequently be
changed from handling a web of long staple ?ber
to handling a web of short staple ?ber. In the
latter case, the cutting, mechanism is unneces
sary and its continued operation would be unde
sirable. Furthermore, in any case, when the web
of ?ber is ?rst fed into the machine, as from the
carding machine, it is apt to be of uneven thick
ness or more or less bunched up at the leading
end and if the knife were in operative position, 10
the result might be to push some of the tapes
back against the knife and thus injure or cut
the tapes. It is therefore highly desirable that
means shall be provided for removing the knife
from its operative position whenever required. 15
It is for this reason that the knife support is
shown mounted in the backward and forward
movable guides M.
'
In the preferred construction illustrated, the
knife support and knife are held or locked in for 20
ward operating position by latching means. For
that purpose a latch 3! is pivoted at 32 at each
side of the machine and conveniently on the re
spective castings H and i3. The hooked end of
this latch engages behind the guide M and the 25
latch is held in looking position by a spring 33
secured to the opposite end and to the side frame
as to a stud 34 projecting therefrom. Each guide
54 is also shown as connected by a spring 35 ex
tending rearward to a ?xed point on the side 30
frame, such as a stud 36 secured to the casting
for the guide. The mechanism is shown in Figs.
1 and 2 with the knife in operating position.
When now it is desired to move the knife to in
operative or rearward position, the levers 3| at
each side are rocked against the tension of the
latches $3, releasing the guides 14 which, under
the in?uence of the springs 35, move the knife
rearward to inoperative position determined by
the engagement of the guides with the rearward 40
ends of the slots within which they move. To re
place the knife suppcrt and knife in operative
position, the operator simplyv pushes the guides
forward against the tension of the springs 35
until the latches 3i snap over the rear ends of 45
the guides.
When the knife is in inoperative position, it is,v
of course, desirable to disconnect the mechanism
for reciprocating it. As a simple means for ef
fecting that result, the shaft I9 is provided at 50
its upper end with a cap 31 resting on the brack
et 29. Hence by lifting this cap and with it the
shaft 19 in its bearing, the eccentric pin 26 is
withdrawn from the link 27 which may then be
swung aside out of the path of the eccentric pm. 55
In Fig. 5 a slightly different mechanism for
reciprocating the knife is shown. In this case
the horizontal shaft 38 is mounted in a bracket
3?} on the side frame and carries at its end a
pulley 40 driven by any suitable means. In this 60
case the link 41 is pivoted on the knife support
to swing vertically with respect thereto. A disk
42 on the end of the shaft 38 is provided with the
eccentric pin t3 passing through the end of the
65
link M.
Having thus described the invention, what is
claimed as new, and, desired to be secured by
Letters Patent, is:
'
l. A machine comprising means for progres
sively dividing a web of ?ber into slivers and
70
diverting contiguous slivers into diverging paths,
and cutting means located and operating at the
rear of the line of divergence of the slivers act- '
ing to cut any ?bers extended between adjacent
diverging slivers,
75
2,109,176
2. A machine comprising means for progres
sively dividing a, web of ?ber into slivers and di
verting contiguous slivers into diverging paths,
diverting contiguous slivers into diverging paths,
a knife extending parallel with and at the rear
of the line of divergence of. the slivers, and means
for reciprocating the knife to cut any ?bers ex
a guide at each side of the machine mounted for
movement toward and from the rear of. the line
of divergence of the slivers, a knife support. ex
tended between adjacent diverging slivers.
3. A tape condenser having a pair of dividing
mounted for endwise reciprocation in said guides, .
rolls, a series of tape runs engaging said rolls
10
and alternately diverging from and carrying
away from said rolls contiguous slivers detached
from a web of ?ber fed to said rolls, and cutting
means located and operating at the rear of the
line of divergence of the slivers to out any ?bers
15 extended between adjacent diverging slivers.
4. A tape condenser having a pair of. dividing
rolls, a series of tape runs engaging said rolls
and alternately diverging from and carrying
from said rolls contiguous slivers detached from
20 a web of ?ber fed to said rolls, a knife extending
parallel with and at the rear of the line of di
vergence of the slivers, and means for recipro
cating the knife to cut any ?bers extended be
tween adjacent diverging slivers.
5. A machine as de?ned in claim 2, together
with means for adjusting the knife to a further
rearward and inoperative position.
6. A machine as de?ned in claim 2, together
with yielding‘ means acting to move the knife
30 rearward to an inoperative position, and latching
means acting releasably to hold the knife in
operative position.
7. A machine as de?ned in claim 4, together
with means for adjusting the knife to a further
tending parallel with the line of divergence
a knife blade secured to and projecting forward
from said support with its edge close to the line 10
of divergence when the guides are in forward
position, and means for reciprocating the knife
support.
7
10. A machine as de?ned in claim 9 in which
the means for reciprocating the knife support 15
comprises an eccentric mounted at one side of
the machine, means for rotating the eccentric,
and a detachable connection between the eccen
tric and the knife support.
11. A tape condenser having a pair of dividing 20
rolls, a series of tape runs engaging said rolls
and alternately diverging from and carrying
away from said rolls contiguous slivers detached
from a web of ?ber fed to said rolls, a guide at
each side of the tape condenser mounted for
movement toward and from the rear of the divid
ing rolls,- a knife support extending parallel with
the dividing rolls mounted for endwise recipro
cation in said guides, a knife blade secured to and
projecting forward from said support with its 30
edge close to the bite of the dividing rolls when
the guides are in forward position, and means for
reciprocating the knife support.
.
8. A machine as de?ned in claim 4, together
with yielding means acting to move the knife
rearward to an inoperative position, and latch
12. A tape condenser as de?ned in claim 11 in
which the means for reciprocating the knife sup
port comprises an eccentric mounted at one side
of the condenser, means for rotating the eccen
tric, and a detachable connection between the
ing means acting releasabl-y to hold the knife in
eccentric and the knife support.
rearward and inoperative position.
40
3.
9. A machine comprising means for progres
sively dividing a web of ?ber into slivers and
operative position.
HENRY H. KNIGHT.
.
40
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